A polyester filament fiber spinning oiling device

Abstract

This application belongs to the technical field of oiling devices and discloses an oiling device for polyester filament fiber spinning. It includes an oiling tank, with threading holes on both sides of the tank. The inner bottom wall of each of the two sets of threading holes has a first arc groove. Multiple guide rollers are rotatably mounted on the inner wall of one side of the oiling tank, and multiple guide grooves are provided on their side walls. The number of first arc grooves is equal to the number of guide grooves, and their positions correspond one-to-one. A blocking component is provided in each of the two sets of threading holes. The oiling tank contains an oiling mechanism and an automatic threading mechanism. This application, by setting an automatic threading mechanism, achieves the purpose of automatic threading of polyester filaments, eliminating the cumbersome operation of manually threading multiple polyester filaments through the tank and into the annular grooves on the first and second guide rollers, thus improving the oiling efficiency of polyester filaments.

Description

Technical Field

[0001] This utility model relates to the technical field of oiling devices, and in particular to an oiling device for polyester filament fiber spinning. Background Technology

[0002] During the spinning process, high-speed friction between fibers and mechanical parts can cause spinning damage. It is necessary to spray lubricating oil onto the spinning surface through an oiling device so that a lubricating film is formed on the oiled fiber surface, reducing the coefficient of friction between the fiber and the equipment, as well as between the fibers themselves.

[0003] Chinese utility model patent CN216274487U discloses a polyester filament fiber spinning oiling device, including a box body. The device is characterized in that: a rectangular groove for placing a guide plate is opened at the upper end of the box body, and multiple guide holes are opened on the guide plate. A spinning oiling channel is provided below the rectangular groove of the box body. An oil spraying plate, a first guide roller and a second guide roller are arranged in sequence in the spinning oiling channel. Multiple annular grooves for conveying polyester filaments are opened on the roller surfaces of the first guide roller and the second guide roller respectively.

[0004] After the above-mentioned polyester filament fiber spinning oiling device has finished oiling multiple filaments, it is necessary to manually pass the multiple polyester filaments through the box and through the annular grooves opened on the first guide roller and the second guide roller. The operation is relatively cumbersome and not conducive to improving the oiling efficiency of polyester filaments. Utility Model Content

[0005] To solve the above problems, this utility model provides a polyester filament fiber spinning oiling device.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a polyester filament fiber spinning oiling device, including an oiling tank, with threading holes extending to the top of the oiling tank on both sides of the side walls of the oiling tank, and first arc grooves extending to both sides of the threading holes on the inner bottom walls of both sets of threading holes, and guide rollers rotatably mounted on the inner wall of one side of the oiling tank, with multiple guide rollers provided, and multiple guide grooves provided on the side walls of the guide rollers, the number of first arc grooves being equal to the number of guide grooves and their positions corresponding one-to-one, and shielding components for reducing the probability of lubricating oil splashing out of the oiling tank when oiling polyester filaments are provided in both sets of threading holes, and an oiling mechanism for oiling polyester filaments and an automatic threading mechanism for automatically threading polyester filaments into the guide grooves are provided in the oiling tank.

[0007] By adopting the above technical solution, multiple polyester filaments are installed on an automatic threading mechanism during the process of passing them through the upper oil tank. The automatic threading mechanism can then automatically thread multiple filaments into the guide grooves, eliminating the cumbersome operation of manually threading multiple polyester filaments through the tank and through the annular grooves on the first and second guide rollers, thus improving the oiling efficiency of polyester filaments.

[0008] Furthermore, a guide rod is fixed inside the upper oil tank, and the axial direction of the guide rod is parallel to the length direction of the upper oil tank. The automatic threading mechanism includes a lifting assembly, which includes a hollow mounting block that is slidably connected to the guide rod and has an open bottom, a slide rod that is slidably disposed in the mounting block, a lifting slide rail fixed to the inner side wall of the upper oil tank, a connecting block that is rotatably mounted on the side wall of the slide rod, and two limiting posts that are rotatably mounted on the connecting block. The top and bottom of the lifting slide rail abut against and are rolledly connected to the side walls of the two limiting posts respectively. The automatic threading mechanism also includes a clamping assembly for clamping the polyester filament during threading and a displacement assembly for driving the mounting block to move.

[0009] By adopting the above technical solution, during the process of threading polyester filaments into the guide groove, the polyester filaments are first clamped by the clamping assembly. Then, the displacement assembly drives the mounting block to move from one side to the other side of the upper oil tank, so that the slide rod connected to the displacement screw, the connecting block connected to the slide rod and the connecting block connected to the lifting slide rail, and the clamping assembly set on the slide rod all move. During this process, the two limiting posts first move up, down, up and down along the side wall of the lifting slide rail in sequence and move to the position of the threading through hole on the other side. This causes the connecting block connected to the limiting posts, the slide rod connected to the connecting block, and the clamping assembly connected to the slide rod to move up, down, up and down in sequence, thereby achieving the purpose of threading the polyester filaments.

[0010] Furthermore, the guide rollers are arranged in a triangular pattern on the upper oil tank in three configurations. The clamping assembly includes an L-shaped mounting bracket fixed to the slide rod and a fixed clamping block fixed to the top of the horizontal section of the mounting bracket. The horizontal section of the mounting bracket has a through mounting hole. The clamping assembly also includes a movable clamping block slidably mounted in the through mounting hole, a clamping screw rotatably mounted in the through mounting hole and threadedly connected to the movable clamping block, and a knob fixed to the end of the clamping screw away from the slide rod. The sidewalls of the fixed clamping block and the movable clamping block that are close to each other are provided with arc-shaped clamping grooves. A gap is provided between the end of the guide roller near the lifting slide rail and the lifting slide rail for the mounting block to pass through. The number of fixed clamping blocks, the number of movable clamping blocks, and the number of first arc-shaped grooves are all equal and their positions correspond one-to-one.

[0011] By adopting the above technical solution, in the process of clamping or releasing polyester filaments, multiple polyester filaments are first inserted into the space between two adjacent arc-shaped clamping slots. Then, the knob is rotated to drive the clamping screw to rotate. Since the moving clamping block is threadedly connected to the clamping screw and slidably connected to the mounting through hole, the moving clamping block moves toward or away from the fixed clamping block, thereby achieving the purpose of clamping or releasing the polyester filaments by the two sets of arc-shaped clamping slots, so as to perform the threading work of the polyester filaments.

[0012] Furthermore, the displacement assembly includes a displacement screw rotatably mounted inside the upper oil tank and threadedly connected to the mounting block, and a motor fixed to the side wall of the upper oil tank and driving the displacement screw to rotate.

[0013] By adopting the above technical solution, the displacement screw drives the motor to rotate after it works, which in turn causes the mounting block that is threaded to the motor to move, so that the polyester filament can be threaded.

[0014] Furthermore, the oiling mechanism includes an oiling assembly, which includes a connecting pipe fixed to the top wall of the oil tank, a connecting box fixed to the lower end of the connecting pipe and connected thereto, and an atomizing nozzle fixed to the bottom of the connecting box and connected thereto. The oiling mechanism also includes an oil extraction assembly for supplying oil to the connecting pipe.

[0015] By adopting the above technical solution, during the oiling process of polyester filament, the oil is supplied to the connecting pipe through the oil extraction component. First, the lubricating oil enters the connecting box from the connecting pipe, then enters the atomizing nozzle from the connecting box, and finally is atomized and sprayed out through the atomizing nozzle, thereby achieving the purpose of oiling the polyester filament.

[0016] Furthermore, the oil extraction assembly includes an oil pump fixed to the top of the upper oil tank, an oil extraction pipe fixed to and connected to the oil inlet end of the oil pump, and an oil storage tank fixed to and connected to the bottom of the upper oil tank. The end of the oil extraction pipe away from the oil pump is fixed to and connected to the side wall of the oil storage tank, and the output end of the oil pump is fixed to and connected to the top of the connecting pipe.

[0017] By adopting the above technical solution, after the oil pump starts working, the lubricating oil in the oil storage tank will first enter the input end of the oil pump through the oil extraction pipe, and then be discharged into the connecting pipe from the output end of the oil pump, thus ensuring normal oiling.

[0018] Furthermore, an oil inlet hole is provided through the top of the oil tank, and a filter screen is fixed inside the oil inlet hole.

[0019] By adopting the above technical solution, during the oiling process of polyester filaments, excess lubricating oil will pass through the filter screen and enter the oil storage tank for storage. At the same time, the filter screen will filter the lubricating oil, reducing the probability of polyester filament fragments mixed in the lubricating oil entering the oil storage tank.

[0020] Furthermore, the shielding assembly includes a baffle slidably connected within the thread-through hole, two sets of clips respectively fixed to the side walls on both sides of the baffle, and a handle fixed to the baffle. Each side wall on both sides of the thread-through hole is provided with a slot for inserting and connecting with the two clips respectively. The bottom of the baffle is provided with a second arc groove at a position corresponding to the first arc groove. The number of the second arc grooves is equal to the number of the first arc grooves, and their positions correspond one-to-one.

[0021] By adopting the above technical solution, after the polyester filament is threaded, the guide roller of the oiling mechanism is pushed downward, so that the oiling component connected to the guide roller of the oiling mechanism and the oil extraction component connected to the oiling component both descend until the bottom of the oiling component is in contact with the bottom of the threading through hole. The oiling component reduces the probability of the polyester filament splashing out into the oiling tank when oiling.

[0022] In summary, the present invention has the following beneficial effects: In this application, by setting an automatic threading mechanism, the purpose of automatic threading of polyester filament is achieved, eliminating the cumbersome operation of manually threading multiple polyester filaments through the box and inserting them into the first and second guide rollers with annular grooves, thereby improving the oiling efficiency of polyester filament. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention used to highlight the internal structure of the upper fuel tank;

[0025] Figure 3 yes Figure 1 A cross-sectional schematic diagram;

[0026] Figure 4 This is a schematic diagram illustrating the connection structure between the slide rod and the mounting block in an embodiment of this utility model;

[0027] Figure 5 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the oil extraction pipe and the oil storage tank;

[0028] Figure 6 yes Figure 2 Enlarged diagram of point A in the middle.

[0029] In the diagram: 1. Upper oil tank; 2. Threading through hole; 3. Guide roller; 31. Guide groove; 4. Shielding assembly; 41. Baffle; 42. Clamping strip; 43. Handle; 5. Oiling mechanism; 51. Oiling assembly; 511. Connecting pipe; 512. Connecting box; 513. Atomizing nozzle; 52. Oil extraction assembly; 521. Oil pump; 522. Oil extraction pipe; 523. Oil storage tank; 6. Guide rod; 7. Automatic threading mechanism; 71. Lifting assembly; 711. Mounting block; 712. Slide rod; 713. Lifting slide rail; 714. Connecting block; 715. Limiting post; 72. Clamping assembly; 721. Mounting frame; 722. Fixed clamping block; 723. Moving clamping block; 724. Clamping screw; 725. Knob; 73. Displacement assembly; 731. Displacement screw; 732. Motor; 8. Filter screen. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] like Figure 1-6 As shown in the embodiment of this application, a polyester filament fiber spinning oiling device is disclosed, including an oiling tank 1, a guide roller 3, a shielding assembly 4, an oiling mechanism 5, and an automatic threading mechanism 7. Threading through holes 2 extending to the top of the oiling tank 1 are provided on both sides of the side walls of the oiling tank 1. A guide rod 6 is fixed inside the oiling tank 1, and the axial direction of the guide rod 6 is parallel to the length direction of the oiling tank 1. First arcuate grooves extending to both sides of the inner bottom walls of both sets of threading through holes 2 are provided. A guide roller 3 is rotatably mounted on the inner wall of one side of the oiling tank 1. Multiple guide rollers 3 are provided, specifically three guide rollers distributed in a triangular pattern on the oiling tank 1. Multiple guide grooves 31 are provided on the side walls of the guide rollers 3. The number of first arcuate grooves is equal to the number of guide rollers 3, and their positions correspond one-to-one.

[0032] During the process of passing polyester filaments through the upper oil tank 1, multiple polyester filaments are installed on the automatic threading mechanism 7. The automatic threading mechanism 7 can automatically thread multiple filaments into the guide groove 31, eliminating the cumbersome operation of manually threading multiple polyester filaments through the tank and through the annular grooves on the first guide roller 3 and the second guide roller 3, thus improving the oiling efficiency of polyester filaments.

[0033] A shielding assembly 4 is disposed within the threading hole 2. The number of shielding assemblies 4 is equal to the number of threading holes 2, and their positions correspond one-to-one. The shielding assembly 4 is used to reduce the probability of lubricating oil splashing into the upper oil tank 1 when oiling polyester filaments. The shielding assembly 4 includes a baffle 41, a retaining strip 42, and a handle 43. The baffle 41 is slidably connected within the threading hole 2. A second arc groove is formed at the bottom of the baffle 41 at a position corresponding to the first arc groove. The number of guide grooves 31 and the number of second arc grooves are equal to the number of first arc grooves, and their positions correspond one-to-one. The retaining strip 42 is fixed to the side wall of the baffle 41. Two sets of retaining strips 42 are provided and symmetrically distributed about the middle of the threading hole 2. The handle 43 is fixed to the baffle 41. A retaining groove is formed on each side wall of the threading hole 2, which is respectively connected to the two retaining strips 42.

[0034] After the polyester filament is threaded, the guide roller 3 of the oiling mechanism 5 is pushed downwards, so that the oiling component 51 connected to the guide roller 3 of the oiling mechanism 5 and the oil extraction component 52 connected to the oiling component 51 both descend until the bottom of the oiling component 51 is in contact with the bottom of the threading through hole 2. The oiling component 51 reduces the probability of the polyester filament splashing out into the oiling tank 1 when oiling.

[0035] An oiling mechanism 5 is installed inside the upper oil tank 1 and is used to oil polyester filaments. The oiling mechanism 5 includes an oiling component 51 and an oil extraction component 52. The oiling component 51 includes a connecting pipe 511, a connecting box 512, and an atomizing nozzle 513. The connecting pipe 511 is fixed to the inner top wall of the upper oil tank 1, and the connecting box 512 is fixed to and connected to the lower end of the connecting pipe 511 and to the bottom of the connecting box 512.

[0036] The oil extraction assembly 52 is used to supply oil to the connecting pipe 511. The oil extraction assembly 52 includes an oil pump 521, an oil extraction pipe 522, and an oil storage tank 523. The oil pump 521 is fixed to the top of the upper oil tank 1, and the output end of the oil pump 521 is fixed and connected to the top of the connecting pipe 511. The oil extraction pipe 522 is fixed to and connected to the oil inlet end of the oil pump 521. The oil storage tank 523 is fixed to and connected to the bottom of the upper oil tank 1, and the end of the oil extraction pipe 522 away from the oil pump 521 is fixed to and connected to the side wall of the oil storage tank 523.

[0037] After the oil pump 521 starts working, the lubricating oil in the oil storage tank 523 first enters the input end of the oil pump 521 through the oil extraction pipe 522, and then is discharged into the connecting pipe 511 from the output end of the oil pump 521. Next, the lubricating oil enters the connecting box 512 from the connecting pipe 511, and then enters the atomizing nozzle 513 from the connecting box 512. Finally, it is atomized by the atomizing nozzle 513 and sprayed out, thereby achieving the purpose of oiling the polyester filament and ensuring normal oiling work.

[0038] An automatic threading mechanism 7 is installed inside the upper oil tank 1. This mechanism automatically threads polyester filaments into the guide groove 31. The automatic threading mechanism 7 includes a lifting assembly 71, a clamping assembly 72, and a displacement assembly 73. The lifting assembly 71 includes a mounting block 711, a slide rod 712, a lifting slide rail 713, a connecting block 714, and limiting posts 715. The mounting block 711 is slidably connected to the guide rod 6 and is a hollow structure with an open bottom. The slide rod 712 is slidably disposed within the mounting block 711. The lifting slide rail 713 is fixed to the inner wall of the upper oil tank 1. A gap is provided between the end of the guide roller 3 near the lifting slide rail 713 and the lifting slide rail 713 for the mounting block 711 to pass through. The connecting block 714 is rotatably mounted on the side wall of the slide rod 712. Two limiting posts 715 are rotatably mounted on the connecting block 714. The top and bottom of the lifting slide rail 713 abut against and roll into contact with the side walls of the two limiting posts 715 respectively.

[0039] The clamping assembly 72 is used to clamp the polyester filament during threading. The clamping assembly 72 includes a mounting frame 721, a fixed clamping block 722, a movable clamping block 723, a clamping screw 724, and a knob 725. The mounting frame 721 is fixed to the slide bar 712 and has an L-shaped structure, with a through-hole in its horizontal section. The fixed clamping block 722 is fixed to the top of the horizontal section of the mounting frame 721, and the movable clamping block 723 is slidably installed within the through-hole. Both the fixed clamping block 722 and the movable clamping block 723 have arc-shaped clamping grooves on their adjacent sidewalls. The number of fixed clamping blocks 722, the number of movable clamping blocks 723, and the number of first arc-shaped grooves are equal and their positions correspond one-to-one. The clamping screw 724 is rotatably installed within the through-hole and threadedly connected to the movable clamping block 723. The knob 725 is fixed to the end of the clamping screw 724 away from the slide bar 712.

[0040] The displacement assembly 73 is used to drive the mounting block 711 to move. The displacement assembly 73 includes a displacement screw 731 and a motor 732. The displacement screw 731 is rotatably mounted in the upper oil tank 1 and threadedly connected to the mounting block 711. The motor 732 is fixed to the side wall of the upper oil tank 1 and drives the displacement screw 731 to rotate.

[0041] During the clamping or releasing of polyester filaments, multiple polyester filaments are first inserted into the spaces between two adjacent arc-shaped clamping slots. Then, the knob 725 is rotated, causing the clamping screw 724 to rotate. Since the movable clamping block 723 is threadedly connected to the clamping screw 724 and slidably connected to the mounting through hole, the movable clamping block 723 moves towards the fixed clamping block 722. The two sets of arc-shaped clamping slots approach each other and clamp the filaments. Subsequently, the displacement screw 731 operates, driving the motor 732 to rotate, which in turn moves the mounting block 711 threadedly connected to the motor 732. This causes the sliding rod 712 connected to the displacement screw 731 and the connecting block connected to the sliding rod 712 to move. The connecting block 714 connected to the lifting slide rail 713 and the clamping component 72 set on the slide rod 712 both move. During this process, the two limiting posts 715 first move up, down, up and down along the side wall of the lifting slide rail 713 and move to the position of the threading hole 2 on the other side. This causes the connecting block 714 connected to the limiting post 715, the slide rod 712 connected to the connecting block 714 and the clamping component 72 connected to the slide rod 712 to move up, down, up and down in sequence. During the movement, the polyester filament is sequentially threaded into the guide grooves 31 on the three sets of guide rollers 3, thereby achieving the purpose of automatic threading of the polyester filament.

[0042] An oil inlet hole is provided through the top of the oil tank 523, and a filter screen 8 is fixed inside the oil inlet hole. During the oiling process of polyester filaments, excess lubricating oil will pass through the filter screen 8 and enter the oil tank 523 for storage. At the same time, the filter screen 8 will filter the lubricating oil, reducing the probability of polyester filament fragments mixed in the lubricating oil entering the oil tank 523.

[0043] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A polyester filament fiber spinning oiling device, comprising an oiling tank (1), characterized in that: Both sides of the upper oil tank (1) are provided with threading holes (2) extending to the top of the upper oil tank (1). The inner bottom walls of both sets of threading holes (2) are provided with first arc grooves extending to both sides of the threading holes (2). A guide roller (3) is rotatably installed on the inner wall of one side of the upper oil tank (1). Multiple guide rollers (3) are provided. Multiple guide grooves (31) are provided on the side wall of the guide rollers (3). The number of first arc grooves is equal to the number of guide grooves (31) and their positions correspond one-to-one. Both sets of threading holes (2) are provided with shielding components (4) to reduce the probability of lubricating oil splashing out of the upper oil tank (1) when oiling polyester filaments. The upper oil tank (1) is provided with an oiling mechanism (5) for oiling polyester filaments and an automatic threading mechanism (7) for automatically threading polyester filaments into the guide grooves (31).

2. The polyester filament fiber spinning oiling device according to claim 1, characterized in that: A guide rod (6) is fixed inside the upper oil tank (1). The axial direction of the guide rod (6) is parallel to the length direction of the upper oil tank (1). The automatic threading mechanism (7) includes a lifting assembly (71). The lifting assembly (71) includes a hollow mounting block (711) that is slidably connected to the guide rod (6) and has an open bottom, a slide rod (712) that is slidably disposed in the mounting block (711), a lifting slide rail (713) fixed to the inner side wall of the upper oil tank (1), and a rotating mounting... The connecting block (714) on the side wall of the slide rod (712) and two limiting posts (715) rotatably mounted on the connecting block (714) are connected to the top and bottom of the lifting slide rail (713) respectively, which are in contact with and rolled to the side walls of the two limiting posts (715). The automatic threading mechanism (7) also includes a clamping component (72) for clamping the polyester filament when threading the polyester filament and a displacement component (73) for driving the mounting block (711) to move.

3. The polyester filament fiber spinning oiling device according to claim 2, characterized in that: The guide rollers (3) are arranged in a triangular pattern on the upper oil tank (1). The clamping assembly (72) includes an L-shaped mounting bracket (721) fixed to the slide rod (712) and a fixed clamping block (722) fixed to the top of the horizontal section of the mounting bracket (721). The horizontal section of the mounting bracket (721) has a through mounting hole. The clamping assembly (72) also includes a movable clamping block (723) slidably mounted in the through mounting hole and a rotatably mounted in the through mounting hole and threadedly connected to the movable clamping block (723). The clamping screw (724) and the knob (725) fixed to the end of the clamping screw (724) away from the slide bar (712) are provided. The side walls of the fixed clamping block (722) and the movable clamping block (723) that are close to each other are provided with arc-shaped clamping grooves. The end of the guide roller (3) close to the lifting slide rail (713) is provided with a gap between it and the lifting slide rail (713) for the mounting block (711) to pass through. The number of fixed clamping blocks (722), the number of movable clamping blocks (723) and the number of first arc-shaped grooves are all equal and their positions correspond one to one.

4. The polyester filament fiber spinning oiling device according to claim 3, characterized in that: The displacement assembly (73) includes a displacement screw (731) rotatably mounted in the upper oil tank (1) and threadedly connected to the mounting block (711), and a motor (732) fixed to the side wall of the upper oil tank (1) and driving the displacement screw (731) to rotate.

5. The polyester filament fiber spinning oiling device according to claim 1, characterized in that: The oiling mechanism (5) includes an oiling assembly (51), which includes a connecting pipe (511) fixed to the top wall of the upper oil tank (1), a connecting box (512) fixed to the lower end of the connecting pipe (511) and connected thereto, and an atomizing nozzle (513) fixed to the bottom of the connecting box (512) and connected thereto. The oiling mechanism (5) also includes an oil extraction assembly (52) for supplying oil to the connecting pipe (511).

6. The polyester filament fiber spinning oiling device according to claim 5, characterized in that: The oil pumping assembly (52) includes an oil pump (521) fixed to the top of the upper oil tank (1), an oil pumping pipe (522) fixed to and connected to the oil inlet end of the oil pump (521), and an oil storage tank (523) fixed to and connected to the bottom of the upper oil tank (1). The end of the oil pumping pipe (522) away from the oil pump (521) is fixed to and connected to the side wall of the oil storage tank (523). The output end of the oil pump (521) is fixed to and connected to the top of the connecting pipe (511).

7. The polyester filament fiber spinning oiling device according to claim 6, characterized in that: The top of the oil storage tank (523) is provided with an oil inlet hole, and a filter screen (8) is fixed inside the oil inlet hole.

8. The polyester filament fiber spinning oiling device according to claim 1, characterized in that: The shielding assembly (4) includes a baffle (41) slidably connected in the threading hole (2), two sets of clips (42) respectively fixed on the side walls on both sides of the baffle (41), and a handle (43) fixed on the baffle (41). The side walls on both sides of the threading hole (2) are provided with slots that are respectively connected to the two clips (42). The bottom of the baffle (41) is provided with a second arc groove at the position corresponding to the first arc groove. The number of the second arc grooves is equal to the number of the first arc grooves, and their positions correspond one-to-one.

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