A scraper circulation cooling structure for lithium battery diaphragm coating

Abstract

The present invention relates to the technical field related to cooling devices, and specifically to a scraper circulating cooling structure for lithium battery diaphragm coating, comprising a main shaft, a movable seat, a scraper and an elastic support member, wherein two ends of the main shaft are integrally formed with a rotating rod, the rotating rod is rotatably mounted on an equipment frame, and the rotating rod is driven by a stepper motor on the equipment frame, the rotation direction of the main shaft is counterclockwise, a mounting groove is provided on the side wall of the main shaft, the movable seat is movably mounted in the mounting groove, and a threaded hole is provided on the outer end surface of the movable seat; by rotatably mounting the main shaft on the equipment frame and arranging multiple scrapers on the main shaft, multiple scrapers are alternately contacted with a coating roller shaft, thereby avoiding frictional heating caused by continuous contact between a single scraper and the coating roller shaft, and when a single scraper is damaged, the damaged scraper can be driven to the outside direction, thereby completing the replacement of the damaged scraper without stopping the operation of the equipment, thereby effectively ensuring the actual processing efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field related to cooling devices, and in particular to a scraper circulation cooling structure for lithium battery diaphragm coating. Background Art

[0002] The diaphragm coater is a device specially used for coating lithium battery diaphragms. It plays a vital role in the battery manufacturing process. It is used to evenly coat the ceramic slurry and PDVF on the diaphragm. The existing Chinese patent document with announcement number CN116878195A discloses a cooling scraper assembly for a lithium battery ceramic diaphragm coating machine, and the scheme includes a main structure and a scraper structure; the scraper structure is movably arranged on the main structure, and the main structure includes a tool holder, a plurality of copper plates, two pairs of copper tubes, a pair of U-shaped tubes, a water tank and a liquid pump; the tool holder is a concave structure, and the left and right sides of the lower wall are provided with plane chamfers, the middle part of the upper wall at both ends of the tool holder is provided with a flip opening, the middle part of the lower wall of the tool holder is provided with five first slots at equal distances, and the left and right sides of the first slot are provided with second slots, the first slot and the second slot are both T-shaped structures, and one end of a plurality of the copper plates is respectively inserted into the first slot at equal distances; However, in the above scheme, only a single scraper is provided. Although a cooling structure is provided for the scraper, its cooling efficiency is limited. The scraper will still heat up during continuous long-term use, resulting in the inability to effectively reduce the scraper temperature, thereby causing accelerated wear rate, thus affecting its service life. For this reason, the present invention proposes a circulating cooling structure for a scraper for lithium battery diaphragm coating to solve the above problem. Summary of the invention

[0003] The object of the present invention is to provide a scraper circulation cooling structure for coating lithium battery separators to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a scraper circulation cooling structure for coating lithium battery separator, comprising: A main shaft, wherein both ends of the main shaft are integrally formed with a rotating rod, the rotating rod is rotatably mounted on the equipment frame, and the rotating rod is driven by a stepper motor on the equipment frame, the main shaft rotates counterclockwise, and a mounting groove is provided on the side wall of the main shaft; A movable seat, the movable seat is movably mounted in the mounting groove, and a threaded hole is formed on the outer end surface of the movable seat; A scraper, the root of which is fixedly connected to a blade holder, a bolt hole is provided on the blade holder, the bolt hole is arranged corresponding to the threaded hole, and the blade holder is fixed to the movable seat by a positioning bolt; An elastic support member is fixedly connected to the inner side of the movable seat.

[0005] Preferably, a coating liquid storage tank is fixedly installed on the bottom surface of the equipment frame, and a coating roller, a feed roller, a front guide roller and a rear guide roller are rotatably installed between the side panels of the equipment frame, and the lithium battery diaphragm to be processed is guided by the front guide roller and the rear guide roller, the lower half of the coating roller is immersed below the liquid level of the coating liquid storage tank, the feed roller is located directly above the coating roller, and the lithium battery diaphragm passes between the coating roller and the feed roller.

[0006] Preferably, the coating roller is driven by a primary drive motor on the equipment frame, and the feeding roller is driven by a secondary drive motor on the equipment frame. The coating roller moves counterclockwise, and the feeding roller moves clockwise. The coating roller and the feeding roller have the same linear speed. The outer surface of the feeding roller is covered with an elastic rubber layer. When the lithium battery separator passes between the coating roller and the feeding roller, the elastic rubber layer is under pressure.

[0007] Preferably, eighteen mounting grooves are arranged around the circumference of the main shaft. When the stepper motor is driven once, the rotation angle of the main shaft is twenty degrees. When the blade of the scraper moves to the axial direction toward the coating roller shaft, the elastic support member is in a compressed state, and the scrapers on both sides of the compressed elastic support member are not in contact with the coating roller shaft. After the main shaft moves ten degrees in the above state, there are a total of two scrapers in contact with the coating roller shaft.

[0008] Preferably, the elastic support member is composed of a primary elastic support body and a secondary elastic support body, the primary elastic support body is a shuttle-shaped frame structure, the secondary elastic support body is an elliptical frame structure, the primary elastic support body and the secondary elastic support body are both cast from spring steel, and the primary elastic support body and the secondary elastic support body are integrally formed, and both sides of the primary elastic support body are respectively fixedly glued to the bottom of the mounting groove and the inner side of the movable seat.

[0009] Preferably, a guide groove is provided on the side wall of the mounting groove, and an opening groove is provided on the movable seat. The guide groove and the opening groove are arranged correspondingly. A limiting member is provided on the bottom surface of the opening groove. The limiting member is movably arranged in the guide groove, and the movement range of the movable seat is limited by the limiting member.

[0010] Preferably, the limit member is composed of a group of elastic plates, the elastic plates are integrally formed with the bottom of the open groove, and the elastic plates are cast from spring steel. The end of the elastic plate is bent to form a locking protrusion, and the locking protrusion is arranged in a V shape. When the elastic plate is in a reset state, the locking protrusion is embedded in the guide groove, and the end of the locking protrusion is integrally formed with a force plate. When the elastic plate is in a reset state, the force plates on the locking protrusions on both sides are arranged to be close to each other.

[0011] Preferably, a guide rod is fixedly installed between the side plates of the equipment frame, and a transmission screw is rotatably installed between the side plates of the equipment frame, the transmission screw is driven by a servo motor on the equipment frame, a movable seat is movably installed on the guide rod, a screw hole is provided on the movable seat, the screw hole is matched with the transmission screw, and the movable seat is driven by the transmission screw, a mounting bracket is fixedly installed on the movable seat, a cleaning seat is fixedly installed on the end of the mounting bracket, a cleaning groove is provided on the cleaning seat, and when the blade of the scraper moves to the axial direction toward the coating roller shaft, the scraper on the lower side of the main shaft is aligned with the cleaning groove.

[0012] Preferably, when the movable seat moves to the end of the transmission screw, the cleaning seat is separated from the scraper, and a cleaning rubber layer is fixedly glued in the cleaning groove. When the cleaning seat moves to a position overlapping with the scraper, the cleaning rubber layer abuts against the side of the scraper, and both sides of the cleaning rubber layer are chamfered.

[0013] Preferably, the blade of the scraper is fixedly glued with a rubber coating layer.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. A scraper circulation cooling structure for lithium battery diaphragm coating composed of a main shaft, a movable seat, a scraper and an elastic support is provided, and the main shaft is rotatably installed on the equipment frame, and multiple scrapers are arranged on the main shaft at equal circumferences, so that multiple scrapers are alternately in contact with the coating roller shaft, thereby avoiding frictional heating caused by continuous contact between a single scraper and the coating roller shaft, and when a single scraper is damaged, the damaged scraper can be driven to the outside direction, so that the damaged scraper can be replaced without stopping the operation of the equipment, thereby effectively ensuring the actual processing efficiency of the equipment; 2. By arranging eighteen scrapers around the circumference of the main shaft, installing the scraper on a movable seat, and movably installing the movable seat in the mounting groove through an elastic support, and ensuring that the main shaft and the coating roller both move counterclockwise, and ensuring that there will be a time point when the two scrapers are in synchronous contact with the coating roller when switching, so as to ensure that during the replacement of the scraper, the scraper can also comprehensively scrape off the excess coating material on the surface of the coating roller, thereby ensuring the scraper's scraping effect on the coating roller, thereby effectively ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle; Figure 3 This is a schematic diagram of the scraper position distribution of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 5 for Figure 4 A magnified schematic diagram of the structure at C in the middle; Figure 6 It is a half-section view of the main shaft of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of the structure at D in the middle; Figure 8 It is a schematic diagram of the structure of the equipment rack of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the equipment rack of the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram of the structure at E in the middle; Fig.11 for Fig.10 A magnified schematic diagram of the structure at F in the middle; Fig.12 This is a schematic diagram of the positions of the main shaft and coating roller shaft of the present invention; Fig.13 for Fig.12 A magnified schematic diagram of the structure at G in the middle; Fig.14 It is a schematic diagram of the structure of the movable seat of the present invention; Fig.15 It is a schematic diagram of the scraper structure of the present invention; Fig.16 for Fig.15 Enlarged schematic diagram of the structure at H in the middle.

[0016] In the figure: main shaft 1, movable seat 2, scraper 3, elastic support member 4, mounting groove 5, equipment frame 6, knife seat 7, positioning bolt 8, rotating rod 9, coating liquid storage tank 10, bolt hole 11, coating roller 12, feeding roller 13, front guide roller 14, rear guide roller 15, lithium battery diaphragm 16, primary elastic support body 17, secondary elastic support body 18, guide groove 19, limit member 20, elastic plate 21, engaging protrusion 22, force plate 23, rubber coating 25, guide rod 26, transmission screw 27, servo motor 28, movable seat 29, mounting bracket 30, cleaning seat 31, cleaning rubber layer 32. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 16 The present invention provides the following three preferred embodiments: Embodiment 1: A scraper circulation cooling structure for lithium battery diaphragm coating, comprising a main shaft 1, a movable seat 2, a scraper 3 and an elastic support 4, both ends of the main shaft 1 are integrally formed with a rotating rod 9, the rotating rod 9 is rotatably mounted on the equipment frame 6, and the rotating rod 9 is driven by a stepper motor on the equipment frame 6, the rotation direction of the main shaft 1 is counterclockwise, a mounting groove 5 is provided on the side wall of the main shaft 1, the movable seat 2 is movably mounted in the mounting groove 5, a threaded hole is provided on the outer end surface of the movable seat 2, the root of the scraper 3 is fixedly connected to a knife seat 7, a bolt hole 11 is provided on the knife seat 7, the bolt hole 11 is arranged corresponding to the threaded hole, the knife seat 7 is fixed to the movable seat 2 by a positioning bolt 8, and the elastic support The support member 4 is fixedly connected to the inner side of the movable seat 2, and a scraper circulating cooling structure for lithium battery diaphragm coating is set up, which is composed of a main shaft 1, a movable seat 2, a scraper 3 and an elastic support member 4. The main shaft 1 is rotatably installed on the equipment frame 6, and multiple scrapers 3 are arranged on the main shaft 1 at equal circumferences, so that multiple scrapers 3 are alternately in contact with the coating roller 12, thereby avoiding frictional heating caused by continuous contact between a single scraper 3 and the coating roller 12, and when a single scraper 3 is damaged, the damaged scraper 3 can be driven to the outside direction, so that the damaged scraper 3 can be replaced without stopping the operation of the equipment, thereby effectively ensuring the actual processing efficiency of the equipment.

[0019] A coating liquid storage tank 10 is fixedly installed on the bottom surface of the equipment frame 6, and a coating roller 12, a feed roller 13, a front guide roller 14 and a rear guide roller 15 are rotatably installed between the side panels of the equipment frame 6, and the lithium battery diaphragm 16 to be processed is guided by the front guide roller 14 and the rear guide roller 15, the lower half of the coating roller 12 is immersed below the liquid level of the coating liquid storage tank 10, the feed roller 13 is located directly above the coating roller 12, and the lithium battery diaphragm 16 passes between the coating roller 12 and the feed roller 13.

[0020] The coating roller 12 is driven by a primary drive motor on the equipment frame 6, and the feeding roller 13 is driven by a secondary drive motor on the equipment frame 6. The coating roller 12 moves counterclockwise, and the feeding roller 13 moves clockwise. The coating roller 12 and the feeding roller 13 have the same linear speed. The outer surface of the feeding roller 13 is covered with an elastic rubber layer. When the lithium battery separator 16 passes between the coating roller 12 and the feeding roller 13, the elastic rubber layer is under pressure.

[0021] Embodiment 2: On the basis of embodiment 1, eighteen mounting grooves 5 are arranged around the circumference of the main shaft 1. When the stepper motor is driven once, the rotation angle of the main shaft 1 is twenty degrees. When the blade of the scraper 3 moves to the axial direction of the coating roller shaft 12, the elastic support 4 is in a compressed state, and the scrapers 3 on both sides of the compressed elastic support 4 are not in contact with the coating roller shaft 12. After the main shaft 1 moves ten degrees in the above state, there are a total of two scrapers 3 in contact with the coating roller shaft 12. By arranging ten equal circles of the scraper 3 around the main shaft 1, the scraper 3 is rotated at an angle of twenty degrees. Eight, and the scraper 3 is installed on the movable seat 2, and the movable seat 2 is movably installed in the installation groove 5 through the elastic support 4, and it is ensured that the main shaft 1 and the coating roller 12 both move counterclockwise, and it is ensured that when the scraper 3 is switched, there will be a time point when the two scrapers 3 are in contact with the coating roller 12 synchronously, so as to ensure that during the replacement of the scraper 3, the scraper 3 can also comprehensively scrape off the excess coating material on the surface of the coating roller 12, thereby ensuring the scraping effect of the scraper 3 on the coating roller 12, thereby effectively ensuring the product quality.

[0022] The elastic support member 4 is composed of a primary elastic support body 17 and a secondary elastic support body 18. The primary elastic support body 17 is a shuttle-shaped frame structure, and the secondary elastic support body 18 is an elliptical frame structure. The primary elastic support body 17 and the secondary elastic support body 18 are both cast from spring steel, and the primary elastic support body 17 and the secondary elastic support body 18 are integrally formed. The two sides of the primary elastic support body 17 are respectively fixedly glued to the bottom of the mounting groove 5 and the inner side of the movable seat 2. Through the combined action of the primary elastic support body 17 and the secondary elastic support body 18, the overall elastic support effect of the elastic support member 4 is effectively guaranteed.

[0023] A guide groove 19 is provided on the side wall of the mounting groove 5, and an opening groove is provided on the movable seat 2. The guide groove 19 and the opening groove are arranged correspondingly. A limiting member 20 is provided on the bottom surface of the opening groove. The limiting member 20 is movably arranged in the guide groove 19, and the movement range of the movable seat 2 is limited by the limiting member 20.

[0024] The limiter 20 is composed of a group of elastic plates 21, which are integrally formed with the bottom of the open groove, and the elastic plate 21 is cast from spring steel. The end of the elastic plate 21 is bent to form a locking protrusion 22, and the locking protrusion 22 is arranged in a V shape. When the elastic plate 21 is in the reset state, the locking protrusion 22 is embedded in the guide groove 19, and the end of the locking protrusion 22 is integrally formed with a force plate 23. When the elastic plate 21 is in the reset state, the force plates 23 on the locking protrusions 22 on both sides are arranged to be close to each other. The limiting member 20 is composed of a group of elastic plates 21, and the end of the elastic plate 21 is bent to form a locking protrusion 22, so that the locking protrusion 22 is locked in the guide groove 19 to limit the movable seat 2, and the locking protrusion 22 is arranged in a V-shape, which can make the locking protrusion 22 elastic, so that the movable seat 2 can be easily disassembled, assembled and replaced as a whole, and the force plate 23 at the end of the locking protrusion 22 can allow better force to be applied between the locking protrusions 22 on both sides, thereby ensuring the stability of the locking protrusion 22 in the guide groove 19.

[0025] Embodiment 3: On the basis of embodiment 2, a guide rod 26 is fixedly installed between the side plates of the equipment frame 6, and a transmission screw 27 is rotatably installed between the side plates of the equipment frame 6, and the transmission screw 27 is driven by the servo motor 28 on the equipment frame 6. A movable seat 29 is movably installed on the guide rod 26, and a screw hole is provided on the movable seat 29. The screw hole is matched with the transmission screw 27, and the movable seat 29 is driven by the transmission screw 27. A mounting bracket 30 is fixedly installed on the movable seat 29, and a cleaning seat 31 is fixedly installed on the end of the mounting bracket 30. A cleaning groove is provided on the cleaning seat 31. When the blade of the scraper 3 moves to the axial direction toward the coating roller shaft 12, the scraper 3 on the lower side of the main shaft 1 is aligned with the cleaning groove.

[0026] When the movable seat 29 moves to the end of the transmission screw 27, the cleaning seat 31 is separated from the scraper 3, and a cleaning rubber layer 32 is fixedly glued in the cleaning groove. When the cleaning seat 31 moves to a position overlapping with the scraper 3, the cleaning rubber layer 32 is in contact with the side of the scraper 3, and both sides of the cleaning rubber layer 32 are chamfered. The transmission screw 27 is driven by the servo motor 28, thereby driving the movable seat 29 to move, thereby driving the cleaning seat 31 on the mounting bracket 30 to move, thereby effectively scraping off the residual material on the scraper 3, thereby effectively ensuring the cleaning effect of the scraper 3 on the coating roller 12, thereby further ensuring the product quality.

[0027] The blade edge of the scraper 3 is fixedly glued with a rubber coating layer 25 . The provision of the rubber coating layer 25 can further ensure the cleaning effect of the scraper 3 on the coating roller 12 .

[0028] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A scraper circulation cooling structure for lithium battery diaphragm coating, characterized in that: include: A main shaft (1), wherein both ends of the main shaft (1) are integrally formed with rotating rods (9), the rotating rods (9) are rotatably mounted on an equipment frame (6), and the rotating rods (9) are driven by a stepping motor on the equipment frame (6), the main shaft (1) rotates in a counterclockwise direction, and a mounting groove (5) is provided on a side wall of the main shaft (1); A movable seat (2), the movable seat (2) being movably mounted in the mounting groove (5), and a threaded hole being formed on an outer end surface of the movable seat (2); A scraper (3), the root of the scraper (3) being fixedly connected to a knife seat (7), the knife seat (7) being provided with a bolt hole (11), the bolt hole (11) being arranged corresponding to the threaded hole, and the knife seat (7) being fixed to the movable seat (2) by a positioning bolt (8); An elastic support member (4), wherein the elastic support member (4) is fixedly connected to the inner side edge of the movable seat (2).

2. The scraper circulation cooling structure for coating lithium battery separator according to claim 1, characterized in that: A coating liquid storage tank (10) is fixedly mounted on the bottom surface of the equipment frame (6), and a coating roller (12), a feeding roller (13), a front guide roller (14) and a rear guide roller (15) are rotatably mounted between the side plates of the equipment frame (6), and the lithium battery separator (16) to be processed is guided by the front guide roller (14) and the rear guide roller (15), the lower half of the coating roller (12) is immersed below the liquid level of the coating liquid storage tank (10), the feeding roller (13) is located directly above the coating roller (12), and the lithium battery separator (16) passes between the coating roller (12) and the feeding roller (13).

3. A scraper circulation cooling structure for coating lithium battery separator according to claim 2, characterized in that: The coating roller (12) is driven by a primary drive motor on the equipment frame (6), and the feeding roller (13) is driven by a secondary drive motor on the equipment frame (6). The coating roller (12) moves counterclockwise, and the feeding roller (13) moves clockwise. The coating roller (12) and the feeding roller (13) have the same linear speed. The outer surface of the feeding roller (13) is coated with an elastic rubber layer. When the lithium battery separator (16) passes between the coating roller (12) and the feeding roller (13), the elastic rubber layer is in a compressed state.

4. A scraper circulation cooling structure for coating lithium battery separator according to claim 3, characterized in that: Eighteen mounting grooves (5) are arranged around the circumference of the main shaft (1). When the stepper motor is driven once, the rotation angle of the main shaft (1) is twenty degrees. When the blade of the scraper (3) moves to the axial direction of the coating roller (12), the elastic support member (4) is in a compressed state, and the scrapers (3) on both sides of the compressed elastic support member (4) are not in contact with the coating roller (12). After the main shaft (1) moves ten degrees in the above state, a total of two scrapers (3) are in contact with the coating roller (12).

5. A scraper circulation cooling structure for coating lithium battery separator according to claim 4, characterized in that: The elastic support member (4) is composed of a primary elastic support body (17) and a secondary elastic support body (18), wherein the primary elastic support body (17) is a shuttle-shaped frame structure, and the secondary elastic support body (18) is an elliptical frame structure. The primary elastic support body (17) and the secondary elastic support body (18) are both cast from spring steel, and the primary elastic support body (17) and the secondary elastic support body (18) are integrally formed. Two sides of the primary elastic support body (17) are respectively fixedly glued to the bottom of the mounting groove (5) and the inner side of the movable seat (2).

6. A scraper circulation cooling structure for coating lithium battery separator according to claim 4, characterized in that: A guide groove (19) is provided on the side wall of the mounting groove (5), and an open groove is provided on the movable seat (2). The guide groove (19) and the open groove are arranged correspondingly. A limit member (20) is provided on the bottom surface of the open groove. The limit member (20) is movably arranged in the guide groove (19), and the movement range of the movable seat (2) is limited by the limit member (20).

7. A scraper circulation cooling structure for coating lithium battery separator according to claim 6, characterized in that: The limiting member (20) is composed of a group of elastic plates (21), the elastic plates (21) are integrally formed with the bottom of the open groove, and the elastic plates (21) are cast from spring steel. The end of the elastic plate (21) is bent to form a locking protrusion (22), the locking protrusion (22) is arranged in a V-shape, and the end of the locking protrusion (22) is integrally formed with a force plate (23). When the elastic plate (21) is in a reset state, the locking protrusion (22) is embedded in the guide groove (19), and the force plates (23) on the locking protrusions (22) on both sides are arranged to be close to each other.

8. A scraper circulation cooling structure for coating lithium battery separator according to claim 7, characterized in that: A guide rod (26) is fixedly mounted between the side plates of the equipment frame (6), and a drive screw (27) is rotatably mounted between the side plates of the equipment frame (6). The drive screw (27) is driven by a servo motor (28) on the equipment frame (6). A movable seat (29) is movably mounted on the guide rod (26). A screw hole is formed on the movable seat (29). The screw hole is matched with the drive screw (27). The movable seat (29) is driven by the drive screw (27). A mounting bracket (30) is fixedly mounted on the movable seat (29). A cleaning seat (31) is fixedly mounted at the end of the mounting bracket (30). A cleaning groove is formed on the cleaning seat (31). When the blade of the scraper (3) moves to the axial direction of the coating roller shaft (12), the scraper (3) on the lower side of the main shaft (1) is aligned with the cleaning groove.

9. A scraper circulation cooling structure for coating lithium battery separator according to claim 8, characterized in that: When the movable seat (29) moves to the end of the driving screw (27), the cleaning seat (31) is separated from the scraper (3), and a cleaning rubber layer (32) is fixedly glued in the cleaning groove. When the cleaning seat (31) moves to a position overlapping with the scraper (3), the cleaning rubber layer (32) is in contact with the side of the scraper (3), and both sides of the cleaning rubber layer (32) are chamfered.

10. A scraper circulation cooling structure for coating lithium battery separator according to claim 9, characterized in that: The blade edge of the scraper (3) is fixedly glued with a rubber coating layer (25).

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