A harness dyeing apparatus and method

Abstract

The application discloses a kind of wire harness dyeing device and method, belong to wire harness dyeing technical field, including a kind of wire harness dyeing device, including cylinder, the bottom of the cylinder is equipped with support, fuel is placed in the inner chamber of the cylinder, still include suction mechanism, it includes the fixed ring of installation in the top of cylinder, the inside of the fixed ring is equipped with gas storage cavity, the bottom of the fixed ring is equipped with suction hole, the outer ring surface of the fixed ring is fixedly connected with multiple groups of communication pipe along tangent, one end of the communication pipe is fixedly connected with positive pressure pipe.This device is provided with positive pressure pipe and extension pipe outer connection positive pressure source located in the outside of fixed ring, the angle of communication pipe and positive pressure pipe when being communicated is set in communication pipe, gas storage cavity and suction hole generate negative pressure, high-temperature steam is driven into gas guide pipe, this design not only successfully absorbs the heat steam and maintains the effective recovery of heat energy, reduces the power consumption of heating mechanism, but also avoids the heat consumption generated by high-temperature flowing through positive pressure source by using positive pressure.

Description

Technical Field

[0001] This invention belongs to the field of wire harness dyeing technology, specifically relating to a wire harness dyeing device and method. Background Technology

[0002] A wire harness is the overall system of service equipment for a certain load source group, such as trunk lines, switching devices, and control systems. The basic research content of traffic theory is to study the relationship between traffic volume, call loss, and wire harness capacity. Therefore, the wire harness is an important basic concept in traffic theory. To facilitate identification and maintenance, the wires in the wire harness are colored differently. Therefore, wire harnesses are usually dyed to give different types of wire harnesses different colors, thus requiring a specialized wire harness dyeing device. In existing technologies, the fuel inside the wire harness dyeing device needs to be kept in a stirring state and at a high temperature to improve dyeing efficiency and shorten the dyeing time. However, the high temperature causes the moisture in the fuel to vaporize into high-temperature steam, which carries away the heat from the fuel. Furthermore, the mechanical stirring device also causes the fuel to lose heat during stirring, resulting in energy waste. Moreover, the mechanical stirring device is easily corroded by the fuel, causing stirring failure. Therefore, there is an urgent need to improve the existing wire harness dyeing device. This application redesigns the aforementioned wire harness dyeing device to address these shortcomings. Summary of the Invention

[0003] The purpose of this invention is to provide a wire harness dyeing device to achieve the function of heat energy recovery.

[0004] A wire harness dyeing device includes a cylindrical body, a support mounted on the bottom of the cylindrical body, and fuel placed inside the inner cavity of the cylindrical body. It also includes: The suction mechanism includes a fixed ring installed on the top of the cylinder, an air storage chamber is provided inside the fixed ring, an air suction hole is provided at the bottom of the fixed ring, and multiple sets of connecting pipes are fixedly connected to the outer ring surface of the fixed ring along the tangent, and a positive pressure pipe is fixedly connected to one end of the connecting pipe. The reflux mechanism includes a fixed frame fixedly installed on the middle part of the outer surface of the cylinder, a reflux pipe fixedly connected inside the fixed frame, an insulation block wrapped around the outside of the reflux pipe filling the inner cavity of the fixed frame, one end of the reflux pipe communicating with the inner wall of the cylinder and coinciding with the tangent of the cylinder, and a one-way valve installed inside the reflux pipe. The air guide tube is spirally wound around the outer surface of the cylinder, and its two ends are connected to the positive pressure tube and the return tube, respectively.

[0005] As a preferred embodiment of the present invention, the one-way valve includes a vent ring fixedly connected to the inner wall of the return pipe, a limiting post being movably sleeved inside the vent ring, a piston being fixedly connected to one end of the limiting post facing the cylinder, and a connecting ring being fixedly connected to the other end of the limiting post. The piston abuts against the surface of the vent ring to form a seal. The inner diameter of the vent ring is smaller than the diameter of the piston, the diameter of the piston is smaller than the outer diameter of the vent ring, and the limiting post is elastically connected between the connecting ring and the vent ring.

[0006] As a preferred embodiment of the present invention, a connecting block is fixedly connected to one end of the piston facing the cylinder, the connecting block being conical in shape, and a guide ring is fixedly connected to one end of the connecting ring facing away from the limiting post, the guide ring having a right-angled triangular cross-section, and the limiting post being in a compressed state.

[0007] As a preferred embodiment of the present invention, bases are installed on both the left and right sides of the bottom of the cylinder, and anti-slip pads are fixedly connected to the bottom of the bases. The anti-slip pads are made of rubber blocks.

[0008] As a preferred embodiment of the present invention, a support is placed at the bottom of the inner cavity of the cylinder, and the support is located above the heating mechanism.

[0009] As a preferred embodiment of the present invention, one end of the positive pressure pipe is fixedly connected to an extension pipe, the diameter of which is smaller than that of the positive pressure pipe, and the extension pipe is used to connect an external positive pressure source.

[0010] As a preferred embodiment of the present invention, the positive pressure pipe is arranged around the outside of the fixing ring and the cylinder, the airflow direction inside the positive pressure pipe is clockwise, and the negative pressure is generated inside the connecting pipe and the gas storage chamber towards the inner cavity of the positive pressure pipe.

[0011] As a preferred embodiment of the present invention, the axial cross-section of the fixing ring is U-shaped, the fixing ring is inverted and disposed on the top of the cylinder, and the air intake hole is located on the bottom of the fixing ring near the inner cavity of the cylinder.

[0012] As a preferred embodiment of the present invention, the connecting pipe, positive pressure pipe, air guide pipe and return pipe are all configured with an inner and outer double-layer structure: a pipe body and a heat insulation layer, wherein the heat insulation layer is made of polystyrene board.

[0013] A dyeing method for a wire harness dyeing device includes the following steps: S1. Place the dye in the inner cavity of the cylinder, so that the liquid level covers the reflux mechanism, the one-way valve prevents the dye from entering the gas guide pipe, start the heating mechanism, and heat the dye to a suitable temperature; S2. Place the wire bundle to be dyed inside the cylinder, supported by a bracket, to ensure that the wire bundle does not come into direct contact with the heating mechanism; S3. At high temperature, the moisture in the dye gradually forms high-temperature vapor and moves upward. By connecting a positive pressure source to the outside of the extended tube, a clockwise positive pressure airflow is formed inside the positive pressure tube, and a negative pressure is formed inside the gas storage chamber and the connecting tube. S4. Negative pressure draws vapor into the gas storage chamber through the suction port, and then sequentially enters the reflux mechanism through the connecting pipe, positive pressure pipe, and guide pipe. S5. Steam carrying a large amount of heat opens the one-way valve under the action of high-pressure positive pressure airflow and enters the inner cavity of the cylinder, returning to the high-temperature dye; S6. After the steam enters the inner cavity of the cylinder clockwise along the tangent of the cylinder, it drives the dye in the cylinder to rotate, thereby automatically generating agitation. The heat is then returned to the dye in the cylinder under the action of the positive pressure airflow.

[0014] Beneficial effects This device has been redesigned to effectively recover the energy of high-temperature fuel vapors. While saving energy, it replaces the mechanical rotating parts that maintain the dye's rotation, significantly improving the device's durability. To achieve this, the device is equipped with an air intake mechanism to absorb the upward-moving vapors generated by the dye in the inner cavity of the cylinder due to high temperature, preventing the high-temperature vapors from carrying away heat. A positive pressure source is connected to a positive pressure pipe and an extension pipe located outside the fixed ring. The angle between the connecting pipe and the positive pressure pipe is set in the connecting pipe, the air storage chamber, and the air intake hole to generate negative pressure, which drives the high-temperature vapors into the air guide pipe. This design not only ensures the effective recovery of heat energy by successfully absorbing the hot vapors and reducing the power consumption of the heating mechanism, but also uses positive pressure to avoid the heat loss generated by the high temperature flowing through the positive pressure source.

[0015] Furthermore, a reflux mechanism is installed in the middle of the outer surface of the cylinder, allowing the recovered high-temperature steam from the gas guide pipe to flow back to the inner cavity of the cylinder in a one-way manner through the reflux pipe. The one-way valve ensures that the high-temperature steam carrying positive pressure can only enter the cylinder through the reflux pipe, while the dye cannot flow to the side connected to the gas guide pipe through the one-way valve. At the same time, the high-temperature steam entering the cylinder along the reflux pipe carries positive pressure airflow to form a dye vortex in the inner cavity of the cylinder, and the dye is automatically stirred, thus eliminating the need for the traditional physical and mechanical stirring module, reducing the maintenance cost of the device, and improving the durability of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this AAAA embodiment, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this AAAA. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the front view of the cylinder body of the present invention; Figure 2 This is a top view of the cylindrical body of the present invention; Figure 3 For the present invention Figure 1 Cross-sectional view at point a; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 For the present invention Figure 1 Cross-sectional view at point b in the middle; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 For the present invention Figure 1 Cross-sectional view at point c in the middle; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C; Figure 9 This is a schematic diagram showing the separation of the heating mechanism, base, anti-slip pad, and bracket of the present invention; Figure 10 This is a schematic diagram showing the separation of the suction mechanism of the present invention; Figure 11 This is a schematic diagram showing the separation of the one-way valve of the present invention; Figure 12 This is a schematic diagram of the radial cross-section of the connecting pipe, positive pressure pipe, air guide pipe and return pipe of the present invention.

[0018] In the diagram: 1. Cylinder; 2. Suction mechanism; 21. Fixing ring; 22. Connecting pipe; 23. Positive pressure pipe; 24. Extension pipe; 25. Air storage chamber; 26. Suction hole; 3. Air guide pipe; 4. Return mechanism; 41. Fixing frame; 42. Insulation block; 43. Return pipe; 44. One-way valve; 441. Vent ring; 442. Limiting post; 443. Connecting ring; 444. Air guide ring; 445. Spring; 446. Piston; 447. Connecting block; 5. Heating mechanism; 6. Base; 7. Anti-slip pad; 8. Support; 9. Pipe body; 10. Insulation layer. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0024] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0025] In the description of the embodiments in this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. It can be the internal connection between two components or the interaction between two components.

[0026] Please see Figures 1-12 This invention illustrates a wire harness dyeing device according to an embodiment of the present invention, comprising a cylindrical body 1, a support 8 mounted on the bottom of the cylindrical body 1, fuel placed inside the inner cavity of the cylindrical body 1, and further comprising: The suction mechanism 2 includes a fixing ring 21 installed on the top of the cylinder 1. The inside of the fixing ring 21 is provided with an air storage chamber 25. The bottom of the fixing ring 21 is provided with a suction hole 26. Multiple sets of connecting pipes 22 are fixedly connected to the outer ring surface of the fixing ring 21 along the tangent. One end of the connecting pipe 22 is fixedly connected to a positive pressure pipe 23. The reflux mechanism 4 includes a fixed frame 41 fixedly installed in the middle of the outer surface of the cylinder 1. A reflux pipe 43 is fixedly connected inside the fixed frame 41. The inner cavity of the fixed frame 41 is filled with a heat insulation block 42 wrapped around the outside of the reflux pipe 43. One end of the reflux pipe 43 is connected to the inner wall of the cylinder 1 and coincides with the tangent of the cylinder 1. A one-way valve 44 is installed inside the reflux pipe 43. The air guide pipe 3 is spirally wound around the outer surface of the cylinder 1, and its two ends are connected to the positive pressure pipe 23 and the return pipe 43, respectively.

[0027] This device has been redesigned to effectively recover the energy of high-temperature vapor from the fuel. While saving energy, it replaces the mechanical rotating parts that maintain the rotation of the dye, greatly improving the durability of the device. To achieve this, the device is equipped with an air intake mechanism 2 to absorb the vapor that moves upward due to the high temperature of the dye in the inner cavity of the cylinder 1, preventing the high-temperature vapor from losing heat. A positive pressure source is connected to a positive pressure pipe 23 and an extension pipe 24 located outside the fixed ring 21. The angle between the connecting pipe 22 and the positive pressure pipe 23 is set in the connecting pipe 22, the air storage chamber 25 and the air intake hole 26 to generate negative pressure, which drives the high-temperature vapor into the air guide pipe 3. This design not only ensures the effective recovery of heat energy by successfully absorbing the hot vapor and reducing the power consumption of the heating mechanism 5, but also avoids the heat loss caused by the high temperature flowing through the positive pressure source by using positive pressure.

[0028] Then, a reflux mechanism 4 is set in the middle of the outer surface of the cylinder 1. The recovered high-temperature steam from the gas guide pipe 3 flows back to the inner cavity of the cylinder 1 in a one-way manner through the reflux pipe 43. The one-way valve 44 ensures that the high-temperature steam carrying positive pressure can only enter the cylinder 1 through the reflux pipe 43, while the dye cannot flow to the side connected to the gas guide pipe 3 through the one-way valve 44. At the same time, the high-temperature steam entering the cylinder 1 along the reflux pipe 43 carries positive pressure airflow to form a dye vortex in the inner cavity of the cylinder 1. The dye is automatically stirred, thus eliminating the need for the traditional physical and mechanical stirring module, reducing the maintenance cost of the device and improving the durability of the device.

[0029] Note: The return pipe 43 only needs to be below the dye liquid surface. Its height does not need to be adjusted downwards near the bottom of the cylinder 1. In order to avoid the one-way blockage of the one-way valve 44 caused by excessive liquid pressure, which would prevent the positive pressure airflow from passing through the one-way valve 44, the depth of the return pipe 43 below the liquid surface needs to be set too large.

[0030] In Example 2, the one-way valve 44 includes a vent ring 441 fixedly connected to the inner wall of the return pipe 43. A limiting post 442 is movably sleeved inside the vent ring 441. A piston 446 is fixedly connected to one end of the limiting post 442 facing the cylinder 1, and a connecting ring 443 is fixedly connected to the other end of the limiting post 442. The piston 446 abuts against the surface of the vent ring 441 to form a seal. The inner diameter of the vent ring 441 is smaller than the diameter of the piston 446, and the diameter of the piston 446 is smaller than the outer diameter of the vent ring 441. The limiting post 442 is elastically connected between the connecting ring 443 and the vent ring 441.

[0031] like Figure 5 , Figure 6 and Figure 11 As shown, the purpose of the one-way valve 44 is to ensure that the high-temperature vapor from the suction mechanism 2 and the air guide pipe 3 can pass through the one-way valve 44 in one direction, while the dye cannot enter the air guide pipe 3 through the one-way valve 44. The piston 446 faces the dye end, and the pressure of the dye presses the piston 446 and the vent ring 441 to form a seal. After the suction mechanism 2 is connected to an external positive pressure source, the positive pressure airflow carrying the high-temperature vapor opens the piston 446 along one side of the connecting ring 443 and compresses the spring 445, so that the positive pressure airflow carrying the high-temperature vapor is discharged through the gap between the piston 446 and the vent ring 441. At the same time, the high pressure prevents the dye from passing through the one-way valve 44.

[0032] In Example 3, a connecting block 447 is fixedly connected to one end of the piston 446 facing the cylinder 1. The connecting block 447 is conical in shape. A guide ring 444 is fixedly connected to one end of the connecting ring 443 facing away from the limiting post 442. The axial cross-section of the guide ring 444 is a right triangle. The limiting post 442 is in a compressed state.

[0033] like Figure 5 , Figure 6 As shown, the connecting block 447 is located at one end of the dye. When the positive pressure airflow carrying high-temperature vapor from the air guide pipe 3 pushes the piston 446 and one end of the connecting block 447, the conical tip of the connecting block 447 can reduce the resistance, while the concave shape of the air guide ring 444 can guide the positive pressure airflow carrying high-temperature vapor without wasting any of its kinetic energy.

[0034] Example 4: Bases 6 are installed on both the left and right sides of the bottom of the cylinder 1. Anti-slip pads 7 are fixedly connected to the bottom of the bases 6. The anti-slip pads 7 are made of rubber blocks.

[0035] like Figure 1 As shown, the cylinder 1 is supported by the base 6, and the anti-slip pad 7 at the bottom of the base 6 has an anti-slip function, thereby maintaining the overall stability of the cylinder 1.

[0036] In Example 5, a support 8 is placed at the bottom of the inner cavity of the cylinder 1, and the support 8 is located above the heating mechanism 5.

[0037] like Figure 3 As shown, when the wire harness enters the inner cavity of the cylinder 1, in order to prevent the wire harness from directly contacting the heating mechanism 5 and thus burning out, a bracket 8 is provided above the heating mechanism 5 to support the wire harness and avoid the above situation from occurring.

[0038] In Example 6, one end of the positive pressure tube 23 is fixedly connected to an extension tube 24. The diameter of the extension tube 24 is smaller than the diameter of the positive pressure tube 23. The extension tube 24 is used to connect an external positive pressure source.

[0039] like Figure 1 , Figure 10 As shown, the positive pressure pipe 23 and the extension pipe 24 are connected. The extension pipe 24 can be connected to an external positive pressure source, such as a fan. After the fan blows out positive pressure airflow along the extension pipe 24, it enters the positive pressure pipe 23. Its speed slows down, but the airflow increases, thereby increasing the negative pressure in the connecting pipe 22 and the air storage chamber 25 in cooperation with the connecting pipe 22.

[0040] In Example 7, the positive pressure pipe 23 is arranged around the outside of the fixing ring 21 and the cylinder 1. The airflow direction inside the positive pressure pipe 23 is clockwise, and negative pressure is generated inside the connecting pipe 22 and the gas storage chamber 25 towards the inner cavity of the positive pressure pipe 23.

[0041] like Figure 7 As shown, the airflow from the positive pressure source flows in the direction of the arrow in the figure within the positive pressure pipe 23. Since the positive pressure airflow cannot enter the connecting pipe 22 at this time, the negative pressure generated inside the connecting pipe 22 in the direction of the arrow in the figure just happens to continuously absorb the high-temperature steam generated in the cylinder 1 into the gas storage chamber 25 and the connecting pipe 22. Then, when the high-temperature steam enters the inside of the positive pressure pipe 23, it just flows back down along the gas guide pipe 3.

[0042] In Example 8, the axial cross-section of the fixing ring 21 is U-shaped. The fixing ring 21 is hung upside down on the top of the cylinder 1, and the air intake hole 26 is located on the bottom of the fixing ring 21 near the inner cavity of the cylinder 1.

[0043] like Figure 3 , Figure 4 As shown, the fixing ring 21, through its "U"-shaped structural design, positions the air intake hole 26 at its bottom on one side of the inner cavity of the cylinder 1, and under the support of negative pressure, absorbs the steam from the inner cavity of the cylinder 1.

[0044] In Example 9, the connecting pipe 22, the positive pressure pipe 23, the air guide pipe 3, and the return pipe 43 are all configured with an inner and outer double-layer structure: pipe body 9 and heat insulation layer 10, the heat insulation layer 10 being made of polystyrene board.

[0045] like Figure 12 As shown, in order to improve the heat preservation performance of the connecting pipe 22, positive pressure pipe 23, and gas guide pipe 3 when transporting high-temperature steam, they are configured as pipe body 9 and heat insulation layer 10, wherein the pipe body 9 is made of heat insulation material, thereby preventing the high-temperature steam from losing heat during transportation.

[0046] A dyeing method for a wire harness dyeing device includes the following steps: S1. Place the dye in the inner cavity of the cylinder 1, so that the liquid level covers the reflux mechanism 4, and the one-way valve 44 prevents the dye from entering the gas guide pipe 3. Start the heating mechanism 5 and heat the dye to a suitable temperature. S2. Place the wire bundle to be dyed in the inner cavity of the cylinder 1, supported by the bracket 8, to ensure that the wire bundle does not come into direct contact with the heating mechanism 5; S3. At high temperature, the moisture in the dye gradually forms high-temperature vapor and moves upward. Through the extension tube 24 connected to the positive pressure source, a clockwise positive pressure airflow is formed inside the positive pressure tube 23, and a negative pressure is formed inside the gas storage chamber 25 and the connecting tube 22. S4. The negative pressure draws the vapor into the gas storage chamber 25 through the suction hole 26, and then into the return mechanism 4 through the connecting pipe 22, the positive pressure pipe 23 and the guide pipe 3 in sequence; S5. The steam carrying a large amount of heat opens the one-way valve 44 under the action of the high-pressure positive pressure airflow and enters the inner cavity of the cylinder 1, returning to the high-temperature dye. S6. After the steam enters the inner cavity of the cylinder 1 clockwise along the tangent of the cylinder 1, it drives the dye in the cylinder 1 to rotate, thereby automatically generating stirring. The heat is driven by the positive pressure airflow and flows back to the dye in the cylinder 1.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of protection of the claims of the present invention.

Claims

1. A wire harness dyeing device, comprising a cylindrical body (1), wherein a support (8) is mounted on the bottom of the cylindrical body (1), and fuel is placed in the inner cavity of the cylindrical body (1), characterized in that, Also includes: The suction mechanism (2) includes a fixing ring (21) installed on the top of the cylinder (1), the inside of the fixing ring (21) is provided with an air storage chamber (25), the bottom of the fixing ring (21) is provided with a suction hole (26), and the outer ring surface of the fixing ring (21) is fixedly connected with multiple sets of connecting pipes (22) along the tangent, and one end of the connecting pipe (22) is fixedly connected with a positive pressure pipe (23). The reflux mechanism (4) includes a fixed frame (41) fixedly installed in the middle of the outer surface of the cylinder (1). A reflux pipe (43) is fixedly connected inside the fixed frame (41). The inner cavity of the fixed frame (41) is filled with a heat insulation block (42) wrapped around the outside of the reflux pipe (43). One end of the reflux pipe (43) is connected to the inner wall of the cylinder (1) and coincides with the tangent of the cylinder (1). A one-way valve (44) is installed inside the reflux pipe (43). The air guide pipe (3) is spirally wound around the outer surface of the cylinder (1), and the two ends of the air guide pipe (3) are connected to the positive pressure pipe (23) and the return pipe (43) respectively.

2. The wire harness dyeing apparatus according to claim 1, characterized in that, The one-way valve (44) includes a vent ring (441) fixedly connected to the inner wall of the return pipe (43). A limit post (442) is movably sleeved inside the vent ring (441). A piston (446) is fixedly connected to one end of the limit post (442) facing the cylinder (1). A connecting ring (443) is fixedly connected to the other end of the limit post (442). The piston (446) abuts against the surface of the vent ring (441) to form a seal. The inner diameter of the vent ring (441) is smaller than the diameter of the piston (446). The diameter of the piston (446) is smaller than the outer diameter of the vent ring (441). The limit post (442) is elastically connected between the connecting ring (443) and the vent ring (441).

3. The wire harness dyeing apparatus according to claim 2, characterized in that, The piston (446) is fixedly connected to a connecting block (447) at one end facing the cylinder (1). The connecting block (447) is conical in shape. The connecting ring (443) is fixedly connected to a guide ring (444) at one end facing away from the limiting post (442). The guide ring (444) has a right-angled triangle in its axial cross-section. The limiting post (442) is in a compressed state.

4. The wire harness dyeing apparatus according to claim 3, characterized in that, The bottom of the cylinder (1) is equipped with a base (6) on both the left and right sides. The bottom of the base (6) is fixedly connected with an anti-slip pad (7), which is made of rubber block.

5. The wire harness dyeing apparatus according to claim 4, characterized in that, A bracket (8) is placed at the bottom of the inner cavity of the cylinder (1), and the bracket (8) is located above the heating mechanism (5).

6. The wire harness dyeing apparatus according to claim 5, characterized in that, An extension tube (24) is fixedly connected to one end of the positive pressure tube (23). The diameter of the extension tube (24) is smaller than that of the positive pressure tube (23). The extension tube (24) is used to connect to an external positive pressure source.

7. The wire harness dyeing apparatus according to claim 6, characterized in that, The positive pressure pipe (23) is arranged around the outside of the fixed ring (21) and the cylinder (1). The airflow direction inside the positive pressure pipe (23) is clockwise. The connecting pipe (22) and the gas storage chamber (25) generate negative pressure towards the inside of the positive pressure pipe (23).

8. The wire harness dyeing apparatus according to claim 7, characterized in that, The axial cross-section of the fixing ring (21) is U-shaped. The fixing ring (21) is upside down and set on the top of the cylinder (1). The air intake hole (26) is located on the bottom of the fixing ring (21) near the inner cavity of the cylinder (1).

9. A wire harness dyeing apparatus according to claim 8, characterized in that, The connecting pipe (22), positive pressure pipe (23), air guide pipe (3) and return pipe (43) are all configured with an inner and outer double-layer structure: pipe body (9) and heat insulation layer (10), the heat insulation layer (10) being made of polystyrene board.

10. The dyeing method of the wire harness dyeing apparatus according to claim 9, characterized in that, Includes the following steps: S1. Place the dye in the inner cavity of the cylinder (1) so that the liquid level covers the reflux mechanism (4), and the one-way valve (44) blocks the dye from entering the gas pipe (3). Start the heating mechanism (5) and heat the dye to a suitable temperature. S2. Place the wire bundle to be dyed in the inner cavity of the cylinder (1), supported by the bracket (8) to ensure that the wire bundle does not come into direct contact with the heating mechanism (5); S3. At high temperature, the moisture in the dye gradually forms high temperature vapor and moves upward. Through the extension tube (24) connected to the positive pressure source, a clockwise positive pressure airflow is formed inside the positive pressure tube (23), and a negative pressure is formed inside the gas storage chamber (25) and the connecting tube (22). S4. The negative pressure draws the vapor into the gas storage chamber (25) through the suction hole (26), and then into the return mechanism (4) through the connecting pipe (22), the positive pressure pipe (23) and the gas guide pipe (3) in sequence; S5. The steam carrying a large amount of heat opens the one-way valve (44) under the action of the high-pressure positive pressure airflow and enters the inner cavity of the cylinder (1), returning to the high-temperature dye; S6. After the steam enters the inner cavity of the cylinder (1) clockwise along the tangent of the cylinder (1), it drives the dye in the cylinder (1) to rotate, thereby automatically generating stirring. The heat flows back to the dye in the cylinder (1) under the drive of the positive pressure airflow.

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