NMP recovery liquid hose

Abstract

The application discloses a NMP recovery liquid recovery hose. The NMP recovery liquid recovery hose comprises a pipe body provided with a medium channel through which NMP recovery liquid is transported, and a pulley assembly which is slidingly arranged on the pipe body along the axial direction of the pipe body. The pulley assembly comprises a support plate slidingly arranged on the pipe body, a roller rotatably arranged on the support plate and used for contacting the ground, and a locking piece slidingly arranged on the support plate. When the roller contacts the ground, the locking piece is in contact with the outer wall of the pipe body to lock the pulley assembly.

Description

Technical Field

[0001] This application relates to the field of NMP accessories technology, and more specifically, to a hose for recovering NMP recovery fluid. Background Technology

[0002] In an NMP recovery system, the recovered liquid needs to be transferred to a tank via a dedicated NMP recovery hose for further processing and reuse. After recovering a certain amount of NMP liquid, the system transfers it to a dedicated storage container via a hose. These specially designed hoses are wrapped with a braided layer or metal mesh layer on the outside to prevent wear, cracking at joints due to insufficient bending, and other issues. The cap protects the hose and prevents it from breaking.

[0003] In actual use, operators need to pull the hose to connect it to the corresponding container. However, because the hose is very long, it inevitably needs to be dragged on the ground, which can easily lead to hose breakage and leakage of NMP recovery solution. Summary of the Invention

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] As a first aspect of this application, in order to solve the technical problem that hoses are easily damaged during dragging, some embodiments of this application provide hoses for NMP recovery fluid recovery.

[0006] include:

[0007] The pipe body is equipped with a media channel through which NMP recovery solution is transported;

[0008] The pulley assembly is slidably mounted on the tube body along the axial direction of the tube body;

[0009] The pulley assembly includes:

[0010] The support plate is slidably mounted on the tube body;

[0011] The rollers are mounted on the support plate and are designed to contact the ground.

[0012] The locking element is slidably mounted on the support plate. When the roller contacts the ground, the locking element contacts the outer wall of the tube to lock the roller assembly.

[0013] During the pulling process, the two ends of the tube are usually fixed, while the middle part will contact the ground under the action of gravity, causing friction between this part and the ground. In the solution provided in this application, because the pulley assembly is slidably installed on the tube, the pulley assembly will automatically slide to the middle part of the tube, that is, the drooping part of the tube, and thus replace the tube in contact with the ground. When the roller contacts the ground, the locking device will lock the roller assembly. Therefore, when the tube is pulled, it is actually a pulley assembly installed on the tube, which avoids the outer wall of the tube from contacting and wearing with the ground, thus preventing the hose from breaking and causing NMP recovery liquid leakage.

[0014] These types of hoses generally maintain a relatively cylindrical shape even when no NMP recovery solution is being introduced. Therefore, when the support plate slides along the axial direction of the hose, it can easily get stuck, preventing the support from sliding to the bottom of the hose and causing the bottom of the hose to contact the ground, resulting in hose wear. To address this problem, this application provides the following technical solution:

[0015] Furthermore, a connecting ring is fixedly connected to the support plate, the tube body passes through the connecting ring, and ball bearings are rotatably arranged on the inner wall of the connecting ring.

[0016] The technical solution provided in this application involves placing a connecting ring on a support plate and then on the pipe body. Meanwhile, the inner wall of the connecting ring is provided with ball bearings, thereby ensuring that the support plate can slide along the axial direction of the pipe body.

[0017] Furthermore, the balls can rotate along the circumferential direction of the tube.

[0018] The ball bearings can rotate along the circumference of the tube, thus ensuring that the rollers always face downwards under the influence of gravity, and that the rollers are always in contact with the ground when the tube is hanging down.

[0019] Furthermore, the locking element and the outer wall of the tube are mutually mating friction structures.

[0020] The locking element and the outer wall of the tube are a friction structure that cooperates with each other, so that when the locking element and the tube come into contact with each other, there is enough friction to fix the support plate.

[0021] Furthermore, the rollers consist of four or more rollers forming a stable support structure. The hose passes through the center of the support structure to prevent circumferential movement of the rollers when the operator drags the hose.

[0022] Furthermore, the rollers can be omnidirectional wheels. They can be a roller structure consisting of four omnidirectional wheels, which makes lateral or circumferential movement less likely.

[0023] If the support plate moves circumferentially during its rotation along the pipe, the rollers on the support plate may not make direct contact with the ground, preventing them from moving. This increases friction between the pipe and the ground, making dragging more difficult and potentially damaging the locking mechanism that engages with the pipe. To address this problem, this application provides the following technical solution:

[0024] The tube is very long, and in practical applications, the position where the locking part and the tube body cooperate is not fixed. Therefore, the locking part cannot cooperate with the tube body in any position. Consequently, during use, the position of the support plate needs to be constantly adjusted so that the locking part can contact the tube body when the support plate is in contact with the ground.

[0025] Furthermore, a fixing plate is provided on the support plate, the fixing plate is connected to the edge of the support plate, and a wheel axle is slidably provided on the fixing plate, with the roller rotatably connected to the wheel axle; a locking element is fixedly connected to the wheel axle.

[0026] Furthermore, a connecting plate is connected to the axle, and a locking component is fixedly connected to the connecting plate. A slot is provided on the support plate, and the locking component is located in the slot.

[0027] In the technical solution provided in this application, when the wheel shaft moves upward, it can drive the locking member to move upward, so that the locking member can cooperate with the tube body.

[0028] During the dragging of the tube, the stability of the support plate is related to the spacing between the rollers. Setting the spacing between the rollers too large results in a bulky support plate, making it difficult to store. To address this issue, this application provides the following technical solution:

[0029] Furthermore, the connecting plate and the support plate are connected by a first spring; the connecting plate includes a first connecting part and a second connecting part, there are two first connecting parts, which are respectively located on both sides of the second connecting part, the second connecting part is connected to the locking member, the first connecting part is connected to the roller, and the first connecting part and the second connecting part are connected by a second spring.

[0030] In the technical solution provided in this application, since the middle part of the connecting plate is connected by the second spring, after the second connecting part is subjected to pressure, the second connecting part will move downward, and the second spring will bend, causing the two first connecting parts to tilt to both ends. Thus, after the two rollers tilt outward, it is equivalent to increasing the distance between the two rollers.

[0031] Furthermore, the ball bearings are located only on the connecting ring, on the opposite side of the side connected to the support plate.

[0032] In this design, by placing the ball bearings on the opposite side of the side connected to the support plate, the ball bearings contact the outer surface of the tube under the action of gravity when the roller is not in contact with the ground. When the roller is in contact with the ground, the roller does not contact the outer surface of the tube. Consequently, the friction between the ball bearings and the outer surface of the tube is greater, and the cooperation between the support plate and the tube is more stable.

[0033] As a second aspect of this application, in order to solve the problem that the pipe body is prone to breakage when bent at the end due to the large angle of bending, the following technical solution is provided:

[0034] Furthermore, a protective sleeve is fixedly connected to the end of the tube, and the protective sleeve is made of flexible material.

[0035] In the technical solution provided in this application, by setting a protective sleeve at the end of the pipe, the end part of the pipe can be supported, thereby restraining the bending of the pipe and preventing the pipe from bending at a large angle and causing the pipe to break.

[0036] The sheath increases the thickness of the tube to some extent, thus limiting its ability to restrain the tube during bending. To address this issue, this application provides the following technical solution:

[0037] Furthermore, one end of the sheath is connected to the tube body, while the other end extends outward in a trumpet shape.

[0038] In the technical solution provided in this application, after the sheath extends outward to form a trumpet shape, it will play a supporting role when the tube body is bent. Since the sheath is not connected to the tube body in the trumpet-shaped part, the sheath will only be squeezed by the tube body when the tube body is bent, and will not bend with the tube body. Thus, the sheath will provide greater support force to prevent the tube body from breaking due to large-angle bending. Attached Figure Description

[0039] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0040] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0041] In the attached diagram:

[0042] Figure 1 This is a schematic diagram of the tube hanging naturally.

[0043] Figure 2A schematic diagram of a pulley assembly provided on the pipe body in the solution provided for this application;

[0044] Figure 3 A perspective view of the tubing used for NMP recovery solution;

[0045] Figure 4 A front view of the tubing used for NMP recovery solution;

[0046] Figure 5 for Figure 4 The enlarged view in the middle shows the structure near the pulley;

[0047] Figure 6 Cross-sectional view of the tubing used for NMP recovery solution;

[0048] Figure 7 In some embodiments, Figure 6 The enlarged view in the image shows the structure near the pulley;

[0049] Figure 8 In other embodiments, Figure 6 The enlarged view in the image shows the structure near the pulley;

[0050] Figure 9 This is a schematic diagram of a pipe body when it is bent at a right angle at the end;

[0051] Figure 10 This is a schematic diagram of the modified, bent end of the pipe.

[0052] Figure label:

[0053] 1. Pipe body; 14. Fixing plate; 15. Through groove; 16. Sheath;

[0054] 2. Pulley assembly; 21. Support plate; 211. First spring; 212. Connecting rod; 22. Connecting ring; 221. Ball bearing; 23. Roller; 24. Locking element; 25. Wheel axle; 26. Connecting plate; 261. First connecting part; 262. Second connecting part; 263. Second spring; Detailed Implementation

[0055] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0056] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0057] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0058] Reference Figure 2

[0059] Example 1: This example provides a hose for NMP recovery fluid recovery. The hose includes a tube body 1 and a pulley assembly 2. The tube body 1 has a medium channel for transporting the NMP recovery fluid. The tube body 1 is wrapped with a rubber layer, an inner liner layer, and a braided layer. The rubber layer is a flexible material used to form the medium channel, through which the NMP recovery fluid flows. The inner liner layer is a support layer composed of a metal mesh, generally embedded within the rubber layer. This ensures that the tube body 1 has bending capability and can be supported even without the medium flowing through it. The braided layer wraps around the outside of the rubber layer and is bonded to it, providing protection for the rubber layer.

[0060] The pulley assembly 2 is slidably mounted on the pipe body 1 along the axial direction of the pipe body 1. The pulley assembly 2 includes a support plate 21, a roller 23, and a locking member 24. The support plate 21 is slidably mounted on the pipe body 1, and the roller 23 is rotatably mounted on the support plate 21 for contact with the ground. When the roller 23 is in contact with the ground, the locking member 24 contacts the outer wall of the pipe body 1 to lock the roller 23 assembly.

[0061] For details, please refer to Figure 1 and Figure 2 ,exist Figure 1 As shown, when the pulley assembly 2 is not installed on the pipe body 1, when the pipe body 1 is pulled to connect with the connector, the middle part of the pipe body 1 droops down to the ground and contacts the ground. Figure 2 When the middle of the tube 1 hangs down to the ground, the pulley assembly 2 moves to the bottom of the tube 1 and contacts the ground.

[0062] refer to Figures 3-7 Furthermore, a connecting ring 22 is fixedly connected to the support plate 21, the tube body 1 passes through the connecting ring 22, and ball bearings 221 are rotatably arranged on the inner wall of the connecting ring 22. This arrangement ensures that the support plate 21 can slide smoothly along the axial direction of the tube body 1, avoiding jamming.

[0063] Furthermore, the ball bearing 221 is located only on the connecting ring 22, opposite to the side connected to the support plate 21. That is, the connecting ring 22 is divided into two parts, an upper half ring and a lower half ring. The lower half ring is connected to the support plate 21, while the ball bearing 221 is entirely located within the upper half ring. Therefore, when the roller 23 on the support plate 21 is not yet in contact with the ground, the ball bearing 221 will contact the tube body 1. However, when the roller 23 is in contact with the ground, the ball bearing 221 will not contact the tube body. Thus, the friction between the tube body 1 and the connecting ring 22 will increase.

[0064] Furthermore, the locking element and the outer wall of the tube form a mating friction structure. That is, the material with a high coefficient of friction, such as rubber, is used between the locking element and the outer wall of the tube.

[0065] In some embodiments, a fixing plate is fixedly connected to the edge of the support plate 21. A through groove 15 is formed on the fixing plate 14, and a wheel axle 25 is disposed within the through groove 15. Specifically, at least two fixing plates 14 are provided, arranged opposite each other, with their through grooves 15 facing each other. The wheel axle 25 passes through the through groove 15, forming an anti-rotation connection with the through groove 15. For example, the through groove 15 is rectangular, and the cross-section of the portion of the wheel axle 25 disposed within the through groove 15 is also rectangular. Therefore, the wheel axle 25 cannot rotate within the through groove 15, but can slide along it. The through groove 15 is arranged along the height direction, so the wheel axle 25 can slide along the height direction. A roller 23 is rotatably mounted on the wheel axle 25, and a connecting plate 26 is fixedly connected to the wheel axle 25. A locking member 24 is disposed on the connecting plate 26.

[0066] refer to Figure 8 In other embodiments: In the aforementioned embodiments, the roller 23 is immovable, and a fixing plate is specifically provided on the support plate 21 to allow the axle of the roller 23 to slide. In this embodiment, the following technical solution is adopted:

[0067] The lower end face of the support plate 21 is connected to a first spring piece 211, and the other end of the first spring piece 211 is connected to a connecting plate 26. The axle 25 and the connecting plate 26 are connected by a connecting rod 212, and the roller 23 is rotatably mounted on the axle 25. The first spring piece 211 is inclined, so that the first spring piece 211 can deform in both the vertical and horizontal directions.

[0068] The connecting plate 26 includes a first connecting part 261 and a second connecting part 262. There are two first connecting parts 261, which are located on both sides of the second connecting part 262 respectively. The second connecting part 262 is connected to the locking member 24. The first connecting part 261 is connected to the connecting rod 212. The first connecting part 261 and the second connecting part 262 are connected by a second spring piece 263.

[0069] Furthermore, the rollers consist of four or more rollers forming a stable support structure. The hose passes through the center of the support structure to prevent circumferential movement of the rollers when the operator drags the hose.

[0070] Furthermore, the rollers can be omnidirectional wheels. They can be a roller structure consisting of four omnidirectional wheels, which makes lateral or circumferential movement less likely.

[0071] Example 2:

[0072] refer to Figure 6 , Figure 9 , Figure 10 Based on Example 1, to prevent the hose from breaking when bent at the end, a sheath made of flexible material is fixedly connected to the end of the hose body 1. This arrangement provides support to the end of the hose body 1, preventing it from breaking due to a 90-degree right-angle bend. Simultaneously, one end of the sheath is connected to the hose body 1, while the other end extends outward in a trumpet shape. The portion of the sheath extending to the other end is not connected to the hose body 1, providing greater support and further preventing the hose body 1 from breaking.

[0073] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A hose for NMP recovery liquid, characterized by include: The pipe body is equipped with a media channel through which NMP recovery solution is transported; The pulley assembly is slidably mounted on the tube body along the axial direction of the tube body; The pulley assembly includes: The support plate is slidably mounted on the tube body; The rollers are mounted on the support plate and are designed to contact the ground. The locking element is slidably mounted on the support plate. When the roller contacts the ground, the locking element contacts the outer wall of the tube to lock the roller assembly. A connecting ring is fixedly connected to the support plate, the tube passes through the connecting ring, and a ball bearing is rotatably arranged on the inner wall of the connecting ring, the ball bearing can rotate along the circumferential direction of the tube; a fixing plate is provided on the support plate, the fixing plate is connected to the edge of the support plate, and a wheel axle is slidably arranged on the fixing plate, the roller is rotatably connected to the wheel axle; a locking member is fixedly connected to the wheel axle.

2. The hose for NMP recovery liquid according to claim 1, characterized by: The locking element and the outer wall of the tube are a friction structure that fits together.

3. The hose for NMP recovery liquid according to claim 1, characterized by: A positioning ring is fitted on the axle, and a connecting plate is connected to the positioning ring. A locking element is fixedly connected to the connecting plate. A slot is opened on the support plate, and the locking element is located in the slot.

4. The flexible tube for NMP recovery solution according to claim 3, characterized in that: The end of the tube is fixedly connected to a sheath, which is made of flexible material.

5. The flexible tube for NMP recovery solution according to claim 1, characterized in that: One end of the sheath is connected to the tube body, and the other end extends outward in a trumpet shape.

6. The flexible tube for NMP recovery solution according to claim 1, characterized in that: There are multiple pulley assemblies.

7. The flexible tube for NMP recovery solution according to claim 3, characterized in that: The connecting plate and the support plate are connected by a first spring piece; the connecting plate includes a first connecting part and a second connecting part, there are two first connecting parts, which are respectively located on both sides of the second connecting part, the second connecting part is connected to a locking member, the first connecting part is connected to a roller, and the first connecting part and the second connecting part are connected by a second spring piece.

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