Efficient, less-water and environment-friendly textile printing and dyeing vat

Abstract

The utility model relates to the technical field of textile printing and dyeing, and discloses an efficient, less-water and environment-friendly textile printing and dyeing vat which comprises a printing and dyeing vat body, the front side and the rear side of the outer wall of the printing and dyeing vat body are both communicated with a plurality of material ports, and the front side and the rear side of the inner wall of the printing and dyeing vat body are both fixedly connected with a plurality of positioning frames. Rotating rollers are rotatably connected to the front and rear sides of the inner wall of the positioning frame, a plurality of guide rollers are fixedly connected to the bottom of the front side of the inner wall of the printing and dyeing vat body, a base is fixedly connected to the bottom of the outer wall of the printing and dyeing vat body, a dye barrel is fixedly connected to the left side of the top of the base, and a first water pump is fixedly connected to the right side of the outer wall of the dye barrel. According to the textile dyeing device, air is blown out from the air outlet holes in the front side and the rear side of the inner wall of the hollow frame through the fan, so that dye can enter the inner wall of a textile more quickly, the squeezing rollers in the water tank squeeze the textile, redundant water in the textile is squeezed out and conveyed back to the dye barrel, cyclic utilization of water resources is achieved, and the water consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of textile printing and dyeing technology, and in particular to a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat. Background Technology

[0002] To produce multicolored textiles, textile yarns are typically dyed. Through rich colors and diverse pattern designs, a variety of beautiful textiles are provided, satisfying consumers' pursuit of fashion and individuality. A textile dyeing vat is required in the dyeing process.

[0003] Textile dyeing vats are used for dyeing synthetic fibers. They can be used for dyeing at higher temperatures and pressures, allowing the dye to penetrate the fiber more effectively, improving the uniformity of dyeing and color fastness. They are also used for dyeing some natural fibers and textiles that do not require high temperatures and pressures.

[0004] Currently available textile dyeing vats require textiles to be placed in the dyeing vat and stirred during the dyeing process. A large amount of water is needed during the dyeing process to ensure that the dye can penetrate into the textiles, thereby achieving uniform dyeing. Since the dye needs to penetrate into the textiles, a large amount of water resources are required, which cannot achieve water-saving and environmentally friendly dyeing. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-efficiency, low-water, and environmentally friendly textile dyeing vat, which aims to improve the problem that the existing technology requires a large amount of water resources to immerse the dye into the textile, thus failing to achieve low-water and environmentally friendly dyeing.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a high-efficiency, low-water, and environmentally friendly textile dyeing vat, comprising a dyeing vat body, wherein multiple material inlets are connected to the front and rear sides of the outer wall of the dyeing vat body, multiple positioning frames are fixedly connected to the front and rear sides of the inner wall of the dyeing vat body, rotating rollers are rotatably connected to the front and rear sides of the inner wall of the positioning frames, multiple guide rollers are fixedly connected to the bottom front side of the inner wall of the dyeing vat body, a base is fixedly connected to the bottom of the outer wall of the dyeing vat body, a dye barrel is fixedly connected to the top left side of the base, and a water tank is fixedly connected to the right side of the outer wall of the dye barrel. Pump 1, the input end of which is connected to the dye tank, and the output end of which is connected to a delivery pipe, with multiple mist nozzles connected to the left and right sides of the inner wall of the delivery pipe. A fan is fixedly connected to the top of the dyeing vat body, and an air supply pipe is connected to the bottom of the fan. Multiple hollow frames are fixedly connected to the left and right sides of the bottom of the air supply pipe. Multiple air outlets are opened on the front and back sides of the inner wall of the hollow frames. A water removal component is fixedly connected to the rear side of the outer wall of the multiple hollow frames. A folding mechanism is provided on the rear side of the outer wall of the dyeing vat body. The folding mechanism is used to fold the dyed textiles.

[0007] As a further description of the above technical solution:

[0008] The folding mechanism includes a fixed frame, which is fixed to the inner wall and rotatably connected to rotating rods on both the front and rear sides. A motor is fixedly connected to the left side of the outer wall of the fixed frame, and the output end of the motor passes through the fixed frame and is fixedly connected to the rotating rod on the front side. The right end of the rotating rod on the left side passes through the fixed frame and is fixedly connected to a first transmission wheel, and the right end of the rotating rod on the right side passes through the fixed frame and is fixedly connected to a second transmission wheel. A transmission belt is provided on the outer side of the fixed frame and the first transmission wheel, and the first and second transmission wheels are connected by the transmission belt. A bottom frame is rotatably connected to the bottom of the outer wall of the fixed frame, and a connecting rod is rotatably connected to the right side of the outer wall of the first transmission wheel. The other end of the connecting rod is rotatably connected to the bottom frame.

[0009] As a further description of the above technical solution:

[0010] The dewatering assembly includes a second water pump, which is fixedly connected to the rear side of the outer wall of the dye barrel. The output end of the second water pump is connected to the dye barrel, and the other end of the second water pump is connected to a water supply pipe. The other end of the water supply pipe passes through the dyeing vat body and is connected to a water tank. The inner wall of the water tank is rotatably connected to both the front and rear sides with extrusion rollers, and the outer wall of the water tank has a feed inlet on the front side.

[0011] As a further description of the above technical solution:

[0012] The top left and right sides of the outer wall of the dyeing vat body are fixedly connected to mounting boxes, and the top of the mounting boxes is fixedly connected to an alarm light.

[0013] As a further description of the above technical solution:

[0014] A mounting frame is fixedly connected to the middle of the front side of the outer wall of the dyeing vat body, and a display screen is fixedly connected to the inner wall of the mounting frame.

[0015] As a further description of the above technical solution:

[0016] The front left and right sides of the dyeing vat body are fixedly connected to observation frames, and the inner walls of the observation frames are fixedly connected to transparent plates.

[0017] As a further description of the above technical solution:

[0018] Pipe rings are fixedly connected to the left and right sides of the outer wall of the air supply pipe, and a vertical rod is fixedly connected to the top of the pipe ring. The top of the vertical rod is fixedly connected to the body of the dyeing vat.

[0019] As a further description of the above technical solution:

[0020] A waterproof box is fixedly connected to the left side of the outer wall of the dyeing vat body, and multiple control buttons are fixedly connected to the front side of the inner wall of the waterproof box.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, air is delivered to the hollow frame by a fan. The air is blown out from the air outlets on the front and back sides of the inner wall of the hollow frame, which allows the dye to enter the inner wall of the textile more quickly. After dyeing, the textile enters the water tank. The squeezing roller in the water tank squeezes the textile to squeeze out the excess water. The water pump transports the squeezed water from the water tank back to the dye barrel, realizing the recycling of water resources and reducing water consumption.

[0023] 2. In this utility model, the front rotating rod and the first transmission wheel are driven to rotate by the motor. Since the first transmission wheel and the second transmission wheel are driven by the transmission belt, the rear rotating rod also rotates synchronously. During the rotation of the first transmission wheel, the connecting rod moves, thereby driving the bottom frame to reciprocate. While the rotating rod is conveying the textile, the bottom frame reciprocates, so that the textile moves back and forth under the restriction of the bottom frame, thereby realizing automatic folding. Attached Figure Description

[0024] Figure 1 A perspective view of a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat proposed in this utility model;

[0025] Figure 2 This is a front view of a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat proposed in this utility model.

[0026] Figure 3 This is a partial structural exploded view of a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat proposed in this utility model.

[0027] Figure 4 for Figure 3 Enlarged view of point A;

[0028] Figure 5 This is a partial structural diagram of a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat proposed in this utility model.

[0029] Figure 6 This is a schematic diagram of the folding mechanism of a high-efficiency, low-water, and environmentally friendly textile printing and dyeing vat proposed in this utility model.

[0030] Legend:

[0031] 1. Dyeing vat body; 2. Folding mechanism; 201. Fixed frame; 202. Rotating rod; 203. Motor; 204. Transmission wheel one; 205. Transmission wheel two; 206. Transmission belt; 207. Connecting rod; 208. Base frame; 3. Feed inlet; 4. Positioning frame; 5. Rotating roller; 6. Guide roller; 7. Base; 8. Dye tank; 9. Water pump one; 10. Conveying pipe; 11. Mist nozzle; 12. Air supply pipe; 13. Hollow frame; 14. Air outlet; 15. Water tank; 16. Squeeze roller; 17. Water pump two; 18. Water supply pipe; 19. Fan; 20. Feed inlet; 21. Mounting box; 22. Alarm light; 23. Mounting frame; 24. Display screen; 25. Observation frame; 26. Transparent plate; 27. Pipe ring; 28. Upright pole; 29. ​​Waterproof box; 30. Control button. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a high-efficiency, low-water, and environmentally friendly textile dyeing vat, comprising a dyeing vat 1. Multiple feed inlets 3 are connected to the front and rear sides of the outer wall of the dyeing vat body 1, providing a dyeing space. The feed inlets 3 on the front and rear sides of the outer wall are used for the entry and exit of textiles. Multiple positioning frames 4 are fixedly connected to the front and rear sides of the inner wall of the dyeing vat 1. Rotary rollers 5 are rotatably connected to the front and rear sides of the inner wall of the positioning frames 4. The positioning frames 4 and the rotating rollers 5 guide and support the textiles, ensuring smooth movement of the textiles within the dyeing vat body 1. Multiple guide rollers 6 are fixedly connected to the bottom front side of the inner wall of the dyeing vat body 1, further... To guide the textile's direction and ensure a smooth dyeing process, a base 7 is fixedly connected to the bottom of the outer wall of the dyeing vat body 1. A dye tank 8 is fixedly connected to the top left side of the base 7. A water pump 9 is fixedly connected to the right side of the outer wall of the dye tank 8. The input end of the water pump 9 is connected to the dye tank 8, and the output end of the water pump 9 is connected to a delivery pipe 10. Multiple mist nozzles 11 are connected to the left and right sides of the inner wall of the delivery pipe 10. The dye tank 8 is used to store dye. The water pump 9 draws dye from the dye tank 8 and sprays it onto the textile in a mist form through the delivery pipe 10 and the mist nozzles 11. A fan 19 is fixedly connected to the top of the dyeing vat body 1. The bottom of the blower 19 is connected to an air supply pipe 12. Multiple hollow frames 13 are fixedly connected to the left and right sides of the bottom of the air supply pipe 12. Multiple air outlets 14 are opened on the front and back sides of the inner wall of each hollow frame 13. When the blower 19 is started, air is delivered to the hollow frames 13 through the air supply pipe 12. The air is blown out from the air outlets 14 on the front and back sides of the inner wall of the hollow frame 13, forming an airflow. This allows the dye to enter the inner wall of the textile more quickly, improving production efficiency. A dewatering component is fixedly connected to the rear side of the outer wall of the multiple hollow frames 13. A folding mechanism 2 is provided on the rear side of the outer wall of the dyeing vat body 1. The folding mechanism 2 is used to fold the dyed textile; dewatering... The component includes a second water pump 17, which is fixedly connected to the rear side of the outer wall of the dye tank 8. The output end of the second water pump 17 is connected to the dye tank 8, and the other end of the second water pump 17 is connected to a water supply pipe 18. The other end of the water supply pipe passes through the dyeing vat and is connected to a water tank. The inner wall of the water tank 15 is rotatably connected to the front and rear sides of the inner wall. The outer wall of the water tank 15 has an inlet 20. The squeeze rollers 16 in the water tank 15 squeeze the dyed textiles to remove excess water from the textiles. The second water pump 17 transports the water in the water tank 15 back to the dye tank 8, which can realize the recycling of water resources, reduce water consumption, and meet environmental protection requirements.

[0034] Specifically, the textiles enter the dyeing vat body 1 through the feed inlet 3 on the front side of the outer wall of the dyeing vat body 1. Guided and supported by the positioning frame 4 and the rotating roller 5, and further guided by the guide roller 6, they move orderly within the dyeing vat body 1. The dye in the dye tank 8 is drawn out by the water pump 9 and transported through the conveying pipe 10 to the mist nozzle 11. The mist nozzle 11 evenly sprays the dye in the form of fine particles onto the moving textiles, allowing the dye to come into more complete contact with the textiles, improving the uniformity and efficiency of dyeing. When machine 19 is started, air is delivered to hollow frame 13 through air supply pipe 12. The air is blown out from the air outlet 14 on the front and rear sides of the inner wall of hollow frame 13, forming an airflow, which allows the dye to enter the inner wall of the textile more quickly, improving production efficiency. After dyeing, the textile enters water tank 15 through feed port 20 on the front side of the outer wall of water tank 15. The extrusion roller 16 in water tank 15 squeezes the textile to squeeze out excess water. Water pump 17 transports the squeezed water in water tank 15 back to dye barrel 8, realizing the recycling of water resources and reducing water consumption.

[0035] Reference Figure 1 , Figure 2 and Figure 6 The folding mechanism 2 includes a fixed frame 201, which is fixed to the rear side of the outer wall of the dyeing vat 10. The fixed frame 201 serves for positioning and fixing. Rotating rods 202 are rotatably connected to the front and rear sides of the inner wall of the fixed frame 201. Rotating the rotating rods 202 can transport textiles inside the dyeing vat body 1. A motor 203 is fixedly connected to the left side of the outer wall of the fixed frame 201. The output end of the motor 203 passes through the fixed frame 201 and is fixedly connected to the front rotating rod 202. The right end of the left rotating rod 202 passes through the fixed frame 201 and is fixedly connected to a transmission wheel 204. The right end of the right rotating rod 202 passes through the fixed frame 201 and is fixedly connected to a transmission wheel 204. 5. A transmission belt 206 is provided on the outer side of the fixed frame 201 and the first transmission wheel 204. The first transmission wheel 204 and the second transmission wheel 205 are connected by the transmission belt 206. The starting motor 203 can make the first transmission wheel 204 and the second transmission wheel 205 move synchronously through the transmission belt 206. The bottom of the outer wall of the fixed frame 201 is rotatably connected to the bottom frame 208. When the bottom frame 208 swings, the textiles fall to different positions. The right side of the outer wall of the first transmission wheel 204 is rotatably connected to the connecting rod 207. The other end of the connecting rod 207 is rotatably connected to the bottom frame 208. The rotation of the first transmission wheel 204 can drive the bottom frame 208 to swing regularly.

[0036] Specifically, after the motor 203 starts, it drives the front rotating rod 202 to rotate, and the transmission wheel 204 on the front rotating rod 202 rotates accordingly. Since the transmission wheel 204 and the transmission wheel 205 are connected by a transmission belt 206, the transmission wheel 205 is driven to rotate by the transmission belt 206, thereby causing the rear rotating rod 202 to rotate synchronously. During the rotation of the transmission wheel 204, the connecting rod 207 is driven to move, thereby driving the bottom frame 208 to reciprocate. While the rotating rod 202 is conveying the textile, the bottom frame 208 is reciprocating, so that the textile is reciprocating under the restriction of the bottom frame 208, thereby realizing automatic folding.

[0037] Reference Figure 1 , Figure 2 and Figure 5 The top left and right sides of the outer wall of the dyeing vat body 1 are fixedly connected to the mounting box 21. The top of the mounting box 21 is fixedly connected to the alarm light 22. When the equipment malfunctions, the alarm light 22 flashes to remind the staff to stop the machine for inspection. The middle of the front side of the outer wall of the dyeing vat body 1 is fixedly connected to the mounting frame 23. The inner wall of the mounting frame 23 is fixedly connected to the display screen 24. The display screen 24 can display the machine running time and working status, which is convenient for the staff to record.

[0038] Specifically, the mounting box 21 serves to fix the machine in place. When the equipment malfunctions, the alarm light 22 flashes to remind staff to stop the machine for inspection. The mounting frame 23 mainly provides support for the display screen 24, which can display the machine's running time and working status for easy recording by staff.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The front left and right sides of the dyeing vat body 1 are fixedly connected to observation frames 25, and the inner wall of the observation frame 25 is fixedly connected to a transparent plate 26. The operating status of the equipment can be clearly observed through the transparent plate 26. The outer left and right sides of the air supply pipe 12 are fixedly connected to pipe rings 27. The pipe rings 27 mainly serve to connect pipes. The top of the pipe ring 27 is fixedly connected to a vertical rod 28, and the top of the vertical rod 28 is fixedly connected to the dyeing vat body 1. The front left side of the outer wall of the dyeing vat body 1 is fixedly connected to a waterproof box 29. The front inner wall of the waterproof box 29 is fixedly connected to multiple control buttons 30. The waterproof box 29 can effectively protect the internal electrical components, and the control buttons 30 can control the operating speed of the equipment.

[0040] Specifically, the transparent plate 26 allows for clear observation of the equipment's operating status and the dyeing color, enabling timely adjustments to the dye. The pipe ring 27 primarily serves to connect the pipes, while the upright 28 is fixedly connected to the dyeing cylinder body 1, providing upward tension to the air supply pipe 12 to prevent it from falling. Water stains may occur during operation, and the waterproof box 29 effectively protects the internal electrical components. The control button 30 controls the equipment's operating speed.

[0041] Working principle: Before using the device, the textile material 3 first enters the dyeing vat body 1. Under the guidance of the positioning frame 4, the rotating roller 5, and the guide roller 6, it moves orderly in the dyeing vat body 1. The water pump 1 extracts the dye and delivers it to the mist nozzle 11 through the conveying pipe 10. The mist nozzle 11 sprays the dye in the form of fine particles evenly onto the moving textile, so that the dye can come into full contact with the textile. The fan 19 starts and delivers air to the hollow frame 13. The air is blown out from the air outlet 14 on the front and rear sides of the inner wall of the hollow frame 13 to form an airflow, so that the dye can enter the inner wall of the textile more quickly, improving production efficiency. After dyeing, the textile enters the water tank 15 through the feed port 20 on the front side of the outer wall of the water tank 15. The squeezing roller 16 in the water tank 15 squeezes the textile to squeeze out the excess water. The water pump 2 17 delivers the squeezed water in the water tank 15 back to the dye barrel 8, realizing the recycling of water resources and reducing water consumption.

[0042] Furthermore, after starting the motor 203, the motor 203 drives the front rotating rod 202 to rotate, and the transmission wheel 204 on the front rotating rod 202 rotates accordingly. Since the transmission wheel 204 and the transmission wheel 205 are connected by a transmission belt 206, the transmission wheel 205 is driven to rotate by the transmission belt 206, thereby causing the rear rotating rod 202 to rotate synchronously. During the rotation of the transmission wheel 204, the connecting rod 207 is driven to move, thereby driving the bottom frame 208 to reciprocate. While the rotating rod 202 is conveying the textile, the bottom frame 208 is reciprocating, so that the textile is reciprocating under the restriction of the bottom frame 208, thereby realizing automatic folding.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, low-water, environmentally friendly textile dyeing vat, comprising a vat body (1), characterized in that: The dyeing vat body (1) has multiple material inlets (3) connected to the front and rear sides of its outer wall. Multiple positioning frames (4) are fixedly connected to the front and rear sides of the inner wall of the dyeing vat body (1). Rotary rollers (5) are rotatably connected to the front and rear sides of the inner wall of each positioning frame (4). Multiple guide rollers (6) are fixedly connected to the bottom front side of the inner wall of the dyeing vat body (1). A base (7) is fixedly connected to the bottom of the outer wall of the dyeing vat body (1). A dye barrel (8) is fixedly connected to the top left side of the base (7). A water pump (9) is fixedly connected to the right side of the outer wall of the dye barrel (8). The input end of the water pump (9) is connected to the dye barrel (8). The output end is connected to a conveying pipe (10), and the inner wall of the conveying pipe (10) is connected to multiple mist nozzles (11) on both the left and right sides. The top of the dyeing vat body (1) is fixedly connected to a fan (19), and the bottom of the fan (19) is connected to an air supply pipe (12). The bottom left and right sides of the air supply pipe (12) are fixedly connected to multiple hollow frames (13). The inner wall of the hollow frame (13) is provided with multiple air outlets (14) on both the front and back sides. The outer wall of the multiple hollow frames (13) is fixedly connected to a water removal component. The outer wall of the dyeing vat body (1) is provided with a folding mechanism (2), which is used to fold the dyed textiles.

2. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: The folding mechanism (2) includes a fixed frame (201), which is fixed to the rear side of the outer wall of the (10). Rotating rods (202) are rotatably connected to both the front and rear sides of the inner wall of the fixed frame (201). A motor (203) is fixedly connected to the left side of the outer wall of the fixed frame (201). The output end of the motor (203) passes through the fixed frame (201) and is fixedly connected to the front rotating rod (202). The right end of the left rotating rod (202) passes through the fixed frame (201) and is fixedly connected to a transmission wheel (204). The right rotating rod (204)... The right end of 02) passes through the fixed frame (201) and is fixedly connected to the transmission wheel two (205). The fixed frame (201) and the outer side of the transmission wheel one (204) are provided with a transmission belt (206). The transmission wheel one (204) and the transmission wheel two (205) are connected by the transmission belt (206). The bottom of the outer wall of the fixed frame (201) is rotatably connected to the bottom frame (208). The right side of the outer wall of the transmission wheel one (204) is rotatably connected to the connecting rod (207). The other end of the connecting rod (207) is rotatably connected to the bottom frame (208).

3. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: The dewatering assembly includes a second water pump (17), which is fixedly connected to the rear side of the outer wall of the dye barrel (8). The output end of the second water pump (17) is connected to the dye barrel (8), and the other end of the second water pump (17) is connected to a water supply pipe (18). The other end of the water supply pipe (18) passes through the dyeing vat body (1) and is connected to a water tank (15). The inner wall of the water tank (15) is rotatably connected to the front and rear sides of the inner wall, and the outer wall of the water tank (15) is provided with a feed inlet (20).

4. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: The printing and dyeing vat body (1) has a mounting box (21) fixedly connected to the top left and right sides of the outer wall, and an alarm light (22) is fixedly connected to the top of the mounting box (21).

5. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: A mounting frame (23) is fixedly connected to the middle of the front side of the outer wall of the dyeing vat body (1), and a display screen (24) is fixedly connected to the inner wall of the mounting frame (23).

6. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: The front left and right sides of the dyeing vat body (1) are fixedly connected to observation frames (25), and the inner wall of the observation frame (25) is fixedly connected to a transparent plate (26).

7. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: The outer wall of the air supply pipe (12) is fixedly connected to the left and right sides of the pipe ring (27), and the top of the pipe ring (27) is fixedly connected to the upright (28), and the top of the upright (28) is fixedly connected to the dyeing vat body (1).

8. The high-efficiency, low-water, environmentally friendly textile printing and dyeing vat according to claim 1, characterized in that: A waterproof box (29) is fixedly connected to the left end of the front side of the outer wall of the dyeing vat body (1), and a plurality of control buttons (30) are fixedly connected to the front side of the inner wall of the waterproof box (29).

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