Dye liquor recovery device of dyeing machine

Abstract

The utility model relates to a dye liquor recovery device of a dyeing machine. The dye liquor recovery device comprises a rack, an extrusion roller set and a filter box, the top of the filter box is open, a first filter plate is further connected into the filter box, the rack is further connected with a collecting box, the top of the collecting box is open, the collecting box is located below the extrusion roller set, and the collecting box is located above the filter box. The dye liquor in the collecting box overflows from the opening in the top of the collecting box and drips into the filtering box, so that the height difference between the discharging opening and the filtering box is reduced, the situation that the dye liquor is splashed all around after colliding with the first filtering plate is reduced, and pollution of the dye liquor to the surrounding environment is reduced.

Description

Technical Field

[0001] The present application relates to the field of printing and dyeing equipment, and in particular to a dye liquor recovery device for a dyeing machine. Background Art

[0002] The characteristics of artificial cotton are easy dyeing, no static electricity, strong moisture absorption, and can be iron-free through finishing. It also has the elegance and softness of silk, which are not available in most synthetic fibers. It is more popular in the market, so the artificial cotton market is developing rapidly and its development prospects are unanimously optimistic. In the process of fabric dyeing, overflow dyeing machines are usually used for dyeing.

[0003] The Chinese patent with the authorization announcement number CN218203464U discloses an overflow dyeing machine with a dehydration function, including a dyeing machine body, the dyeing machine body is provided with an inlet and outlet for the cloth to enter and exit, a mounting frame is fixedly arranged on one side of the dyeing machine body near the inlet and outlet, the mounting frame is rotatably connected with a first squeeze roller and a second squeeze roller, a gap for the cloth to pass through is left between the first squeeze roller and the second squeeze roller, a driving motor for driving the first squeeze roller to rotate is fixedly connected to the mounting frame, an elastic component is arranged on the mounting frame, the elastic component is used to press the second squeeze roller against the first squeeze roller, a recovery frame is fixedly connected to the mounting frame, a first filter plate is connected in the recovery frame, and the recovery frame is located below the second squeeze roller and the first squeeze roller. When the dyed cloth moves out of the dyeing machine body, the first squeeze roller and the second squeeze roller squeeze the cloth, so that the cloth and the dye liquid entrained by the cloth are separated, the dye liquid enters the recovery frame, and the operator re-inputs the recovered dye liquid back into the dyeing machine body to save the dye liquid.

[0004] With respect to the above-mentioned related technologies, when the cloth is discharged and passes through the gap between the first squeezing roller and the second squeezing roller, excess dye drips into the recovery frame. Due to the large height difference between the first squeezing roller and the recovery frame, there is a possibility that the dye splashes everywhere when it hits the top of the first filter plate, causing pollution. Utility Model Content

[0005] In order to reduce the height difference between the squeezing roller group and the filter box and reduce the pollution of the surrounding environment by the dyeing liquid, the present application provides a dyeing liquid recovery device for a dyeing machine.

[0006] The dye liquor recovery device of a dyeing machine provided in the present application adopts the following technical solution:

[0007] A dye liquor recovery device for a dyeing machine comprises a frame, an extrusion roller group, and a filter box, wherein the frame is used to be connected to a dyeing machine body, the filter box is provided with an opening at the top, a first filter plate is connected to the filter box, the filter box is located below the extrusion roller group, the frame is also connected to a collecting box, the length direction of the collecting box is consistent with the length direction of the extrusion roller group, the collecting box is provided with an opening at the top, the collecting box is located below the extrusion roller group, the collecting box is located above the filter box, and the collecting box is used to collect the dye liquor squeezed out by the extrusion roller group.

[0008] By adopting the above technical solution, when the dyed cloth is squeezed by the squeezing roller group, the excess dye is collected in the box. As the liquid level of the dye in the collection box gradually rises, the excess dye in the collection box overflows from the opening at the top of the collection box and drips into the filter box, thereby reducing the height difference between the discharge port and the filter box, reducing the splashing of the dye after colliding with the first filter plate, and reducing the pollution of the surrounding environment caused by the dye.

[0009] Optionally, the frame is also connected to a first box, the length direction of the first box is consistent with the length direction of the collecting box, both ends of the collecting box along its length direction are connected to the inner wall of the first box, the top and bottom of the first box are both opened, the inner wall of the first box and the side wall of the collecting box are spaced to form a circulation channel for the dye liquid to pass through, and the inner wall of the circulation channel is also connected to a plurality of blocking plates, and the plurality of blocking plates are staggered and distributed on the inner wall of the circulation channel, one end of the blocking plate is connected to the inner wall of the circulation channel, and the other end of the blocking plate is inclined toward the side close to the filter box.

[0010] By adopting the above technical solution, when the dye liquid in the collection box overflows into the circulation channel through the top opening of the collection box, the blocking sheet blocks the dye liquid, thereby slowing down the falling speed of the dye liquid and further reducing the splashing of the dye liquid.

[0011] Optionally, the frame is also connected to a guide plate, which is located above the collection box, with one end of the guide plate arranged close to the discharge port of the dyeing machine body, and the other end of the guide plate arranged obliquely close to the top of the collection box, and the end of the guide plate away from the dyeing machine body is arranged directly above the collection box.

[0012] By adopting the above technical solution and adding a guide plate, the dye dripping when the cloth is discharged flows along the guide plate into the collection box, thereby avoiding the dye dripping to the ground as much as possible, reducing the waste of dye and reducing the pollution of the dye to the surrounding environment.

[0013] Optionally, a second filter plate is connected to the collecting box, and a drain port is provided on the inner wall of the collecting box. The drain port is located below the second filter plate, and the drain port is communicated with the circulation channel.

[0014] By adopting the above technical solution, the dye liquid is stored in the collection box after being filtered by the second filter plate. When the liquid level of the dye liquid in the collection box is higher than the drain port, the dye liquid flows into the flow channel through the drain port, and a second filter is added to further reduce impurities in the dye liquid.

[0015] Optionally, the collection box is connected to guide plates on both sides along its width direction, the length direction of the guide plates is consistent with the length direction of the collection box, one side of the guide plates is connected to the top of the collection box along its width direction, and the guide plates are inclined from the side away from the collection box to the side away from the filter box.

[0016] By adopting the above technical solution and adding a guide plate, the collection range of the collection box is increased, and the unfiltered dye liquid is prevented from falling into the filter box through the gap between the collection box and the first box as much as possible, thereby reducing impurities in the dye liquid.

[0017] Optionally, a placement groove is provided on the inner wall of the collection box, and a connection port is provided on the top of the placement groove for embedding the second filter plate. The second filter plate is embedded in the placement groove on the periphery and slidably connected in the placement groove along the vertical direction. The second filter plate is also connected to a locking piece, which is used to lock the second filter plate in the placement groove.

[0018] By adopting the above technical solution, when disassembling and assembling the second filter plate, the second filter plate is slidably connected in the placement groove along the vertical direction, so that the second filter plate is embedded in or away from the placement groove, and the second filter plate is easy to disassemble and assemble, thereby facilitating the cleaning and replacement of the second filter plate.

[0019] Optionally, a handle is connected to the top of the second filter plate.

[0020] By adopting the above technical solution, a handle is added to facilitate the operator to take the second filter plate.

[0021] Optionally, the first filter plate is provided with mounting grooves on both sides along its width direction, and the length direction of the mounting groove is consistent with the width direction of the first filter plate. A spring and a clamping block are connected in the mounting groove, and the length direction of the spring is consistent with the width direction of the first filter plate. The clamping block is slidably connected to the mounting groove along the width direction of the first filter plate, one end of the spring is connected to the inner wall of the mounting groove, and the other end of the spring is connected to the clamping block. A groove is provided on the inner wall of the filter box, and the clamping block is embedded in the groove away from one end of the spring. The clamping block is connected to a moving part, and the moving part is used to drive the clamping block to slide along the width direction of the first filter plate to connect to the mounting groove.

[0022] By adopting the above technical solution, when disassembling and assembling the first filter plate, the moving part drives the clamping block to slide along the width direction of the first filter plate and connect to the installation groove, and makes the clamping block close to or away from the groove, thereby facilitating the disassembly and assembly of the first filter plate.

[0023] Optionally, a connecting groove is provided on the top of the first filter plate, the length direction of the connecting groove is consistent with the width direction of the first filter plate, the bottom of the connecting groove is connected to the top of the mounting groove, the movable member is a pushing plate, the length direction of the pushing plate is consistent with the vertical direction, the bottom end of the pushing plate is connected to the top of the clamping block, the top end of the pushing plate passes through the connecting groove in the vertical direction, and the pushing plate is slidably connected in the connecting groove along the width direction of the first filter plate.

[0024] By adopting the above technical solution, when removing the push plate, the operator pushes the push plate, and the push plate slides along the width direction of the first filter plate and is connected in the connecting groove, and drives the clamping block to move along the width direction of the first filter plate, so that the clamping block is away from the groove and the spring is deformed, so that the first filter plate is away from the filter box. When installing the push plate, after the clamping block is aligned with the groove, the operator releases the push plate, the spring restores its shape and pushes the clamping plate to move along the width direction of the first filter plate, and the clamping block is embedded in the groove, so that the first filter plate is stably connected to the filter box.

[0025] Optionally, the push plate is connected to a accordion cover, and two accordion covers are provided, one end of one accordion cover is connected to one side of the push plate, and the other end is connected to the inner wall of the connecting groove on the side close to the clamping block, and the other end of the other accordion cover is connected to the other side of the push plate, and the other end is connected to the inner wall of the connecting groove away from the clamping block.

[0026] By adopting the above technical solution and adding an accordion cover, it is possible to reduce the amount of impurities that enter the installation groove and affect the movement of the pressing block.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the dyed fabric is squeezed by the squeezing roller group, the excess dye is collected in the box. As the liquid level of the dye in the box gradually rises, the excess dye in the box overflows from the top opening of the box and drips into the filter box, thereby reducing the height difference between the discharge port and the filter box, reducing the splashing of the dye after colliding with the first filter plate, and reducing the pollution of the surrounding environment caused by the dye;

[0029] 2. When the dye in the collection box overflows into the flow channel through the top opening of the collection box, the blocking sheet blocks the dye, thereby slowing down the speed of the dye falling, further reducing the splashing of the dye;

[0030] 3. When removing the push plate, the operator pushes the push plate, and the push plate slides along the width direction of the first filter plate and is connected in the connecting groove, and drives the clamping block to move along the width direction of the first filter plate, so that the clamping block is away from the groove and the spring is deformed, so that the first filter plate is away from the filter box. When installing the push plate, after the clamping block is aligned with the groove, the operator releases the push plate, the spring restores its shape and pushes the clamping plate to move along the width direction of the first filter plate, and the clamping block is embedded in the groove, so that the first filter plate is stably connected to the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0032] Figure 2 It is a top view of this embodiment.

[0033] Figure 3 This embodiment Figure 2 Sectional view along AA direction.

[0034] Figure 4 This embodiment Figure 3 Enlarged view of part B.

[0035] Figure 5 This embodiment Figure 3 Magnified view of part C.

[0036] Explanation of the reference numerals: 100, frame; 110, extrusion roller group; 111, first roller; 112, second roller; 120, guide plate; 130, first box; 131, circulation channel; 132, blocking plate; 200, filter box; 210, first filter plate; 211, mounting groove; 212, spring; 213, pressing block; 214, pushing plate; 215, accordion cover; 220, discharge pipe; 221, valve; 230, groove; 240, connecting groove; 300, collecting box; 310, guide plate; 320, second filter plate; 321, handle; 322, locking piece; 330, drain port; 340, placement groove; 341, connecting port. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The present application embodiment discloses a dye liquor recovery device for a dyeing machine. Figure 1 and Figure 2The dye liquor recovery device of the dyeing machine comprises a frame 100 and a filter box 200. The frame 100 is used to be connected to the dyeing machine body, and the filter box 200 is provided with an opening at the top. The frame 100 is also connected to a collecting box 300, and the collecting box 300 is provided with an opening at the top. The collecting box 300 is used to collect the dye liquor dripping when the cloth is discharged. The collecting box 300 is located below the discharge port of the dyeing machine body, and the filter box 200 is located directly below the collecting box 300. A first filter plate 210 is also connected to the filter box 200. The length direction of the collecting box 300 is consistent with the length direction of the filter box 200. The filter box 200 is connected to a discharge pipe 220, and the discharge pipe 220 is used to guide the dye liquor in the collecting box 300 to the next processing process. The discharge pipe 220 is connected to a valve 221, and the valve 221 is used to switch the discharge pipe 220. During the fabric discharge process, excess dye drops into the collection box 300. When the dye in the collection box 300 overflows and drops into the filter box 200, the height difference between the filter box 200 and the discharge port of the dyeing machine body is reduced.

[0039] Reference Figure 1 and Figure 3 The frame 100 is connected with a squeeze roller group 110 and a guide plate 120. The squeeze roller group 110 is located directly above the collection box 300, and the guide plate 120 is located above the collection box 300. The top of the guide plate 120 is arranged near the discharge port of the dyeing machine body, and the bottom of the guide plate 120 extends near the top of the collection box 300, and the bottom of the guide plate 120 is arranged obliquely near the top of the collection box 300, and the guide plate 120 is used to guide the dye liquid into the collection box 300. The squeeze roller group 110 includes a first roller 111 and a second roller 112 rotatably connected to the frame 100. The length direction of the first roller 111 is consistent with the length direction of the collection box 300, and the length direction of the second roller 112 is consistent with the length direction of the first roller 111. The first roller 111 and the second roller 112 are spaced apart in the vertical direction, and the first roller 111 and the second roller 112 are spaced apart to form a gap for the cloth to pass through. When the cloth is discharged, the excess dye liquid of the cloth is squeezed by the squeezing roller group 110 so as to drip into the collection box 300, and the guide plate 120 can guide the dye liquid into the collection box 300, so as to facilitate the collection of the dye liquid.

[0040] Reference Figure 1 and Figure 3The frame 100 is also connected to a first box 130, and the length direction of the first box 130 is consistent with the length direction of the collecting box 300. The first box 130 is sleeved on the collecting box 300, and both ends of the collecting box 300 along its length direction are connected to the corresponding inner walls on both sides of the first box 130. The top and bottom of the first box 130 are both opened. The inner walls on both sides of the first box 130 along its width direction are separated from the side walls on both sides of the collecting box 300 along the width direction of the collecting box 300 to form a circulation channel 131 for the dye liquid to pass through. The inner walls of the circulation channel 131 are connected to a plurality of blocking sheets 132, and the plurality of blocking sheets 132 are staggered and distributed on the inner walls on both sides of the circulation channel 131 along the width direction of the collecting box 300. One end of the blocking sheet 132 is connected to the inner wall of the circulation channel 131, and the other end of the blocking sheet 132 is tilted toward the side close to the filter box 200, and the blocking sheet 132 is made of rubber.

[0041] Reference Figure 3 The top of the collection box 300 is connected with a guide plate 310. Two guide plates 310 are provided, and the two guide plates 310 are located on both sides of the collection box 300 along its width direction. The length direction of the guide plate 310 is consistent with the length direction of the collection box 300. One side of the guide plate 310 along its width direction is connected to the top of the collection box 300. The guide plate 310 is inclined from the side away from the collection box 300 to the side away from the filter box 200. The collection box 300 is connected with a second filter plate 320. The inner wall of the collection box 300 on both sides along its width direction is provided with a drain port 330. The drain port 330 is located below the second filter plate 320, and the drain port 330 is connected to the flow channel 131.

[0042] When the liquid level of the dye in the collection box 300 is higher than the drain port 330, the excess dye overflows into the flow channel 131 through the drain port 330. When the dye passes through the flow channel 131, it is blocked by the blocking sheet 132, and the speed of the dye is reduced, further reducing the situation of the dye splashing everywhere.

[0043] Reference Figure 3 and Figure 4 , the inner wall of the collection box 300 is provided with a placement groove 340, and the top of the placement groove 340 is provided with a connection port 341 for the second filter plate 320 to be embedded. The second filter plate 320 is slidably connected to the placement groove 340 along the vertical direction. A handle 321 is connected to the top of the second filter plate 320. The second filter plate 320 is also connected to a locking member 322, which is a bolt arrangement. The bolt passes through the second filter plate 320 along the vertical direction and is threadedly connected to the inner wall of the placement groove 340. A handle 321 is connected to the top of the second filter plate 320. The second filter plate 320 is detachably connected to the collection box 300, so as to facilitate the cleaning and replacement of the second filter plate 320.

[0044] Reference Figure 3 and Figure 5The first filter plate 210 is provided with mounting grooves 211 on both sides of the sidewalls along the width direction thereof, and the length direction of the mounting grooves 211 is consistent with the width direction of the first filter plate 210. A spring 212 and a pressing block 213 are connected in the mounting groove 211, and the length direction of the spring 212 is consistent with the width direction of the first filter plate 210. One end of the spring 212 is connected to the inner wall of the mounting groove 211, and the other end of the spring 212 is connected to the pressing block 213, and the length direction of the pressing block 213 is consistent with the width direction of the first filter plate 210, and the pressing block 213 is slidably connected to the mounting groove 211 along the width direction of the first filter plate 210. The filter box 200 is provided with grooves 230 on both sides of the inner wall along the width direction thereof, and the depth direction of the grooves 230 is consistent with the width direction of the first filter plate 210, and the pressing block 213 is embedded in the groove 230 away from one end of the spring 212.

[0045] Reference Figure 5 , a connecting groove 240 is provided at the top of the first filter plate 210, the length direction of the connecting groove 240 is consistent with the width direction of the first filter plate 210, and the bottom of the connecting groove 240 is connected to the top of the mounting groove 211. A moving member is connected to the top of the abutting block 213, and the moving member is a push plate 214. The length direction of the push plate 214 is consistent with the vertical direction. The bottom end of the push plate 214 is connected to the top of the abutting block 213, and the top end of the push plate 214 passes through the vertical direction and is slidably connected to the connecting groove 240 along the width direction of the first filter plate 210. The push plate 214 is connected to both sides of the width direction of the first filter plate 210 with an accordion cover 215, one end of an accordion cover 215 is connected to one side of the push plate 214, and the other end is connected to the inner wall of the connecting groove 240 close to the abutting block 213. One end of the other accordion cover 215 is connected to the other side of the push plate 214, and the other end is connected to the inner wall of the connecting groove 240 away from the abutting block 213.

[0046] When disassembling the first filter plate 210, the push plate 214 is moved so that the push plate 214 moves along the width direction of the first filter plate 210, thereby driving the clamping block 213 to move with the push plate 214, so that the clamping block 213 is close to or away from the groove 230, thereby facilitating the disassembly and assembly of the first filter plate 210.

[0047] The implementation principle of the dye recovery device of a dyeing machine in an embodiment of the present application is as follows: during the discharging process of the cloth, excess dye drips into the collecting box 300 and is collected in the collecting box 300. When the liquid level of the dye in the collecting box 300 is higher than the drain port 330, the dye overflows from the drain port 330 into the flow channel 131 and flows along the flow channel 131 into the filter box 200. When the dye passes through the flow channel 131, it is blocked by the blocking sheet 132, thereby reducing the flow rate of the dye, thereby avoiding as much as possible the situation where the dye splashes around after colliding with the first filter plate 210, thereby reducing the pollution of the dye to the surrounding environment.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dye liquor recovery device for a dyeing machine, comprising a frame (100), a squeeze roller group (110), and a filter box (200), wherein the frame (100) is used to be connected to a dyeing machine body, the filter box (200) is provided with an opening at the top, a first filter plate (210) is further connected to the filter box (200), and the filter box (200) is located below the squeeze roller group (110), and is characterized in that: The frame (100) is also connected to a collecting box (300), the length direction of the collecting box (300) is consistent with the length direction of the squeezing roller group (110), the top of the collecting box (300) is open, the collecting box (300) is located below the squeezing roller group (110), the collecting box (300) is located above the filtering box (200), and the collecting box (300) is used to collect the dye liquid squeezed out by the squeezing roller group (110); the frame (100) is also connected to a first box (130), the length direction of the first box (130) is consistent with the length direction of the collecting box (300), and the collecting box ( The first box (130) is connected to the inner wall of the first box (130) at both ends along its length direction. The top and bottom of the first box (130) are both opened. The inner wall of the first box (130) and the side wall of the collection box (300) are spaced apart to form a circulation channel (131) for the dye liquid to pass through. The inner wall of the circulation channel (131) is also connected to a plurality of blocking sheets (132). The plurality of blocking sheets (132) are staggered and distributed on the inner wall of the circulation channel (131). One end of the blocking sheet (132) is connected to the inner wall of the circulation channel (131), and the other end of the blocking sheet (132) is inclined toward a side close to the filter box (200).

2. The dye liquor recovery device for a dyeing machine according to claim 1, characterized in that: The frame (100) is also connected to a guide plate (120), the guide plate (120) being located above the collection box (300), one end of the guide plate (120) being arranged close to the material discharge port of the dyeing machine body, the other end of the guide plate (120) being arranged obliquely close to the top of the collection box (300), and the end of the guide plate (120) being away from the dyeing machine body being arranged directly above the collection box (300).

3. The dye liquor recovery device for a dyeing machine according to claim 1, characterized in that: The collecting box (300) is connected to a second filter plate (320), and an inner wall of the collecting box (300) is provided with a liquid discharge port (330), the liquid discharge port (330) is located below the second filter plate (320), and the liquid discharge port (330) is communicated with the circulation channel (131).

4. The dye liquor recovery device for a dyeing machine according to claim 3, characterized in that: The collection box (300) is connected to guide plates (310) on both sides along the width direction thereof; the length direction of the guide plates (310) is consistent with the length direction of the collection box (300); one side of the guide plates (310) along the width direction thereof is connected to the top of the collection box (300); and the side of the guide plates (310) away from the collection box (300) is inclined toward the side away from the filter box (200).

5. The dye liquor recovery device for a dyeing machine according to claim 3, characterized in that: The inner wall of the collection box (300) is provided with a placement groove (340), and the top of the placement groove (340) is provided with a connection port (341) for the second filter plate (320) to be inserted into. The circumference of the second filter plate (320) is inserted into the placement groove (340) and is slidably connected to the placement groove (340) in a vertical direction. The second filter plate (320) is also connected to a locking member (322), and the locking member (322) is used to lock the second filter plate (320) in the placement groove (340).

6. The dye liquor recovery device for a dyeing machine according to claim 5, characterized in that: A handle (321) is connected to the top of the second filter plate (320).

7. The dye liquor recovery device for a dyeing machine according to claim 1, characterized in that: The first filter plate (210) is provided with mounting grooves (211) on both sides along the width direction thereof, the length direction of the mounting grooves (211) being consistent with the width direction of the first filter plate (210), a spring (212) and a clamping block (213) being connected in the mounting grooves (211), the length direction of the spring (212) being consistent with the width direction of the first filter plate (210), the clamping block (213) being slidably connected in the mounting grooves (211) along the width direction of the first filter plate (210), One end of the spring (212) is connected to the inner wall of the mounting groove (211), and the other end of the spring (212) is connected to the pressing block (213). The inner wall of the filter box (200) is provided with a groove (230), and the end of the pressing block (213) away from the spring (212) is embedded in the groove (230). The pressing block (213) is connected to a moving part, and the moving part is used to drive the pressing block (213) to slide along the width direction of the first filter plate (210) and connect to the mounting groove (211).

8. The dye liquor recovery device for a dyeing machine according to claim 7, characterized in that: A connecting groove (240) is provided at the top of the first filter plate (210), the length direction of the connecting groove (240) is consistent with the width direction of the first filter plate (210), the bottom of the connecting groove (240) is connected to the top of the mounting groove (211), the moving member is a pushing plate (214), the length direction of the pushing plate (214) is consistent with the vertical direction, the bottom end of the pushing plate (214) is connected to the top of the abutting block (213), the top end of the pushing plate (214) passes through the connecting groove (240) in the vertical direction, and the pushing plate (214) is slidably connected to the connecting groove (240) along the width direction of the first filter plate (210).

9. The dye liquor recovery device for a dyeing machine according to claim 8, characterized in that: The push plate (214) is connected to an accordion cover (215), and two accordion covers (215) are provided, one end of one accordion cover (215) is connected to one side of the push plate (214), and the other end is connected to the inner wall of the connecting groove (240) on the side close to the pressing block (213), and the other end of the accordion cover (215) is connected to the other side of the push plate (214), and the other end is connected to the inner wall of the connecting groove (240) on the side away from the pressing block (213).

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