Cooling device for enameled wire

Abstract

The present invention proposes a cooling device for enameled wire, comprising: a base, a roller, a driving device, a water tank and a water pump, two rollers are both arranged horizontally and rotatably on the surface of the base, the two rollers are arranged parallel and spaced, the driving device is fixed on the base, the driving device drives the two rollers to rotate in the same direction at the same speed, the water tank is arranged directly below the two rollers, the water tank is opened on one side close to the rollers, a first guide groove is opened on the surface of the rollers along the circumferential direction, water spray holes are opened on the two opposite side walls of the first guide groove, a water inlet channel is opened on the inner side of the roller along the axial direction, the water inlet channel is connected to the water spray hole, and the opening of the end of the water inlet channel away from the water spray hole is connected to the water tank through a water pump. The present invention provides different cooling ideas for enameled wire production by arranging water spray holes on the rollers to spray water while conveying the enameled wire.

Description

Technical Field

[0001] The invention relates to the technical field of enameled wire production equipment, and in particular to a cooling device for the enameled wire. Background Art

[0002] The production steps of enameled wire mainly include wire drawing, annealing, painting, baking, cooling and other steps. At present, the cooling step is usually to directly input the baked enameled wire into a cooling water tank, and achieve the cooling purpose through heat exchange with the coolant in the water tank. However, in order to achieve the corresponding cooling transportation, it is usually necessary to set a guide wheel for guiding in the water tank. The rotational resistance of the guide wheel in the water tank is large, and it is easy to cause friction between the enameled wire and the enameled wire due to the speed lag during the process.

[0003] Some improvement plans design the water tank into an inclined structure so that the enameled wire can enter the coolant without turning. However, the corresponding design requires a larger water flow, and the gap between the enameled wire and the bottom of the water tank is small, which is prone to scratches and friction, affecting the quality of the enameled wire.

[0004] In view of this, how to design an enameled wire cooling device with a more reasonable structure that can avoid the guide wheel working in water has become one of the technical problems that need to be solved urgently. Summary of the invention

[0005] In view of this, the present invention proposes a cooling device for an enameled wire, aiming to provide a cooling device for an enameled wire with a more reasonable cooling structure.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a cooling device for enameled wire, including: a base, a roller, a driving device, a water tank and a water pump, the two rollers are horizontally rotatably arranged on the surface of the base, the two rollers are arranged in parallel and spaced apart, the driving device is fixed on the base, the driving device drives the two rollers to rotate in the same direction at the same speed, the water tank is arranged directly below the two rollers, the water tank is opened on one side close to the rollers, a first guide groove is opened on the surface of the rollers along the circumferential direction, water spray holes are opened on the two side walls opposite to the first guide groove, a water inlet channel is opened on the inner side of the roller along the axial direction, the water inlet channel is connected with the water spray hole, and the opening at one end of the water inlet channel away from the water spray hole is connected with the water tank through the water pump.

[0007] In some embodiments, a vacuum pump is also included, a second guide groove is opened on the surface of the roller shaft along the circumferential direction, the second guide groove is spaced apart from the first guide groove, water absorption holes are opened on the two opposite side walls of the second guide groove, a water absorption channel is opened on the inner side of the roller shaft along the axial direction, the water absorption channel and the water absorption hole are connected to each other, and the end of the water absorption channel away from the water absorption hole is connected to the vacuum port of the vacuum pump.

[0008] In some embodiments, a buffer cavity is further included, wherein an air inlet and an air outlet are provided on the top of the buffer cavity, an end of the water absorption channel away from the water absorption hole is connected to the air inlet, and the air outlet is connected to the vacuum port of the vacuum pump.

[0009] In some embodiments, a one-way valve is further included, and a liquid outlet is provided at the bottom of the buffer chamber, and the liquid outlet is connected to the water tank through the one-way valve.

[0010] In some embodiments, an air compressor is also included, a third guide groove is opened on the surface of the roller shaft along the circumferential direction, the third guide groove is spaced apart on the side of the second guide groove away from the first guide groove, blowing holes are opened on the two opposite side walls of the third guide groove, an air inlet channel is opened on the inner side of the roller shaft along the axial direction, the air inlet channel and the air hole are connected to each other, and the end of the air inlet channel away from the blowing hole is connected to the air outlet end of the air compressor.

[0011] In some embodiments, a rotating joint is further included, wherein the water inlet channel, the water suction channel and the air inlet channel are all connected to the same end of the roller shaft, the end of the roller shaft provided with the water inlet channel is provided with a concentrically arranged circular groove, a first annular groove and a second annular groove, the water inlet channel is connected to the bottom of the second annular groove, the water suction channel is connected to the bottom of the first annular groove, the air inlet channel is connected to the bottom of the circular groove, and the end of the rotating joint close to the roller shaft is provided with a concentrically arranged circular protrusion, a first annular protrusion and a second annular protrusion, a first through hole is opened on the surface of the circular protrusion, and the first circular protrusion is provided with a first through hole. A second through hole is provided on the surface of the annular protrusion, a third through hole is provided on the surface of the second circular ring protrusion, one end of the roller shaft is provided with a water inlet channel and is rotatably connected to the rotating joint, the circular protrusion is coaxially embedded in the circular groove and fits closely with each other, the first circular ring protrusion is coaxially embedded in the first circular ring groove and fits closely with each other, the second circular ring protrusion is coaxially embedded in the second circular ring groove and fits closely with each other, the air inlet channel is connected with the air outlet end of the air compressor through the first through hole, the water suction channel is connected with the vacuum port of the vacuum pump through the second through hole, and the water inlet channel is connected with the water pump through the third through hole.

[0012] In some embodiments, the angle between the plane where the axes of the two rollers are located and the horizontal plane is 10-30°.

[0013] In some embodiments, the driving device includes a driving motor, a driving wheel, a driven wheel and a synchronous belt. The driving motor is fixed on a base, the driving wheel is keyed to a driving shaft of the driving motor, each roller shaft has a driven wheel coaxially keyed to the outside, and the two driven wheels are synchronously connected to the driving wheel via a synchronous belt.

[0014] In some embodiments, there are two water pumps, and the opening at one end of the water inlet channel of each roller away from the water spray hole is connected to the water tank through a different water pump.

[0015] The cooling device for the enameled wire of the present invention has the following beneficial effects compared with the prior art:

[0016] The cooling device for the enameled wire of the present invention adopts two rollers to convey the enameled wire, and at the same time, a water inlet channel is opened inside the roller, and the water inlet channel is connected with the water spray hole in the guide groove. When the enameled wire is wound in the guide groove and conveyed and guided, the water pump pumps the water in the water tank to the water spray hole and sprays water on the enameled wire in the guide groove to achieve the purpose of cooling. The water after spraying and cooling will fall into the water tank again to achieve circulation. This structure can prevent the roller from being immersed in the water tank, and the rotation speed of the roller is stable and controllable. At the same time, real-time cooling treatment of the enameled wire can be achieved. The structure is simple and the design is reasonable, and it has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is an axonometric view of the cooling device of the enameled wire of the present invention;

[0019] Figure 2 for Figure 1 Exploded diagram of

[0020] Figure 3 It is an axonometric view of the cooling device for the enameled wire of the present invention from another perspective;

[0021] Figure 4 for Figure 3 Exploded diagram of

[0022] Figure 5 It is a diagram of the explosion state of the roller shaft and the rotating joint in the cooling device of the enameled wire of the present invention;

[0023] Figure 6 It is an exploded state diagram of the roller shaft and the rotating joint in the cooling device for the enameled wire of the present invention from another perspective;

[0024] Figure 7 It is a cross-sectional view of the matching state of the roller shaft and the rotary joint in the cooling device for the enameled wire of the present invention;

[0025] Figure 8 It is an axonometric diagram of the matching state of the buffer chamber and the one-way valve in the cooling device of the enameled wire of the present invention.

[0026] In the figure: 1-base, 2-roller, 3-drive device, 4-water tank, 5-water pump, 6-vacuum pump, 7-buffer chamber, 8-check valve, 9-air compressor, 10-rotating joint, 21-first guide groove, 211-water spray hole, 210-water inlet channel, 22-second guide groove, 221-water absorption hole, 220-water absorption channel, 23-third guide groove, 231-air blowing hole, 230-air inlet channel , 201-circular groove, 202-first circular groove, 203-second circular groove, 31-driving motor 32-driving wheel, 33-driven wheel, 34-synchronous belt, 71-air inlet, 72-air outlet, 73-liquid outlet, 101-circular protrusion, 102-first circular protrusion, 103-second circular protrusion, 1011-first through hole, 1021-second through hole, 1031-third through hole. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the embodiments of the present invention belong. If the definitions set forth in this section are contrary to or otherwise inconsistent with the definitions set forth in the patents, patent applications, published patent applications, and other publications incorporated herein by reference, the definitions listed in this section take precedence over the definitions incorporated herein by reference.

[0032] like Figure 1 As shown, combined Figure 2-8 The cooling device of the enameled wire of the present invention comprises: a base 1, a roller 2, a driving device 3, a water tank 4 and a water pump 5. There are two rollers 2, and the two rollers 2 are horizontally rotatably arranged on the surface of the base 1. The two rollers 2 are arranged in parallel and spaced apart. The driving device 3 is fixed on the base 1. The driving device 3 drives the two rollers 2 to rotate in the same direction at the same speed. The water tank 4 is arranged directly below the two rollers 2. The water tank 4 is opened on one side close to the roller 2. A first guide groove 21 is opened on the surface of the roller 2 along the circumferential direction. Water spray holes 211 are opened on the two opposite side walls of the first guide groove 21. A water inlet channel 210 is opened on the inner side of the roller 2 along the axial direction. The water inlet channel 210 is connected with the water spray hole 211. The end of the water inlet channel 210 away from the water spray hole 211 is opened and connected with the water tank 4 through the water pump 5.

[0033] In the above embodiment, the water pump 5 is connected to the water tank 4 through a pipeline, and the water pump 5 is also connected to the water inlet channel 210 through a pipeline. The above pipeline is not shown in the accompanying drawings. The water pump 5 transports the cooling water in the water tank 4 to the water inlet channel 210, and finally sprays it out from the water spray hole 211. Since the water spray hole 211 is opened on the inner side opposite side walls of the first guide groove 21, when the enameled wire to be cooled is wound in the first guide groove 21, the cooling water will be directly sprayed on the surface of the enameled wire to achieve the purpose of cooling. The cooled water flow finally falls into the water tank 4 to achieve the purpose of recycling. The above structure can prevent the roller 2 from being immersed in the water tank 4 and affecting the normal operation of the roller 2. It should be understood that the roller 2 and the water supply pipe from the water pump 5 can be connected by a rotating connecting pipe.

[0034] In the above embodiment, since the cooling water flows on the surface of the first guide groove 21 after being sprayed from the water spray hole 211 , the first guide groove 21 has a good heat dissipation effect. At this time, the high-temperature enameled wire can be quickly cooled when entering the first guide groove 21 .

[0035] In some embodiments, a vacuum pump 6 is also included, a second guide groove 22 is opened on the surface of the roller shaft 2 along the circumferential direction, the second guide groove 22 is spaced apart from the first guide groove 21, water absorption holes 221 are opened on the two opposite side walls of the second guide groove 22, a water absorption channel 220 is opened on the inner side of the roller shaft 2 along the axial direction, the water absorption channel 220 and the water absorption hole 221 are connected to each other, and the end of the water absorption channel 220 away from the water absorption hole 221 is connected to the vacuum port of the vacuum pump 6.

[0036] In the above embodiments, after the enameled wire passes through the first guide groove 21, the temperature of the enameled wire is reduced, and at the same time, there is a certain amount of residual water on the surface of the enameled wire. At this time, the enameled wire can choose to enter the second guide groove 22. In the second guide groove 22, the gas is drawn into the water absorption hole 221. At this time, the air flow rate near the water absorption hole 221 increases. If the enameled wire is in the second guide groove 22, the water attached to its surface will be driven by the high-speed airflow and enter the water absorption hole 221, thereby achieving a good effect of removing moisture from the surface of the enameled wire. At the same time, due to the drive of the high-speed airflow, the moisture on the surface of the enameled wire evaporates more quickly. At the same time, under the action of the high-speed airflow, the enameled wire is further cooled, and the cooling effect is better and gentler.

[0037] In some embodiments, a buffer chamber 7 is further included, and an air inlet 71 and an air outlet 72 are opened on the top of the buffer chamber 7. The end of the water absorption channel 220 away from the water absorption hole 221 is connected to the air inlet 71, and the air outlet 72 is connected to the vacuum port of the vacuum pump 6.

[0038] In the above embodiment, during the vacuum pumping process of the vacuum pump 6, the mixture of water and air entering from the water suction hole 221 directly enters the vacuum pump 6, which may cause damage to the vacuum pump 6. At the same time, the water is pumped away and cannot be circulated into the water tank 4, so that the water cannot achieve the effect of complete circulation. The buffer chamber 7 is provided to separate the water and air mixture from the water suction hole 221, and the water is retained in the buffer chamber 7, while the air is discharged from the air outlet 72 again and enters the vacuum pump 6. By providing the buffer chamber 7, it is possible to prevent water from directly entering the vacuum pump 6 and causing damage, and at the same time, the water can be collected separately.

[0039] In some embodiments, a one-way valve 8 is further included. A liquid outlet 73 is provided at the bottom of the buffer chamber 7 . The liquid outlet 73 is connected to the water tank 4 through the one-way valve 8 .

[0040] In the above embodiment, a liquid outlet 73 is provided at the bottom of the buffer chamber 7, and the one-way valve 8 is used to control the liquid outlet, so that the water temporarily buffered in the buffer chamber 7 can be recycled and reused.

[0041] In some embodiments, an air compressor 9 is also included, and a third guide groove 23 is opened on the surface of the roller shaft 2 along the circumferential direction. The third guide groove 23 is spaced apart on the side of the second guide groove 22 away from the first guide groove 21, and blowing holes 231 are opened on the opposite side walls of the third guide groove 23. An air inlet channel 230 is opened on the inner side of the roller shaft 2 along the axial direction, and the air inlet channel 230 is connected with the blowing hole 231, and the end of the air inlet channel 230 away from the blowing hole 231 is connected to the air outlet end of the air compressor 9.

[0042] In the above embodiment, after the surface water adsorption treatment is performed by the second guide groove 22, there is basically no residual moisture on the surface of the enameled wire, but the moisture has not reached absolute dryness. In order to further reduce the moisture on the surface of the enameled wire, a third guide groove 23 is provided. When the enameled wire passes through the third guide groove 23, the blowing hole 231 located in the third guide groove 23 supplies air through the air compressor 9 so that air can be blown onto the surface of the enameled wire. During the blowing process, the remaining small droplets can be blown away. At the same time, the accelerated air flow rate can promote the drying of the surface water droplets and can achieve a further cooling effect. The blowing process can also achieve a dust removal effect.

[0043] In some embodiments, a rotary joint 10 is also included, and a water inlet channel 210, a water suction channel 220 and an air inlet channel 230 are all connected to the same end of the roller shaft 2. The roller shaft 2 is provided with a water inlet channel 210 at one end thereof, and a concentrically arranged circular groove 201, a first annular groove 202 and a second annular groove 203 are provided. The water inlet channel 210 is connected to the bottom of the second annular groove 203, the water suction channel 220 is connected to the bottom of the first annular groove 202, and the air inlet channel 230 is connected to the bottom of the circular groove 201. The end of the rotary joint 10 close to the roller shaft 2 is provided with a concentrically arranged circular protrusion 101, a first annular protrusion 102 and a second annular protrusion 103. The surface of the circular protrusion 101 is provided with a first through hole 1011, and the first annular protrusion 102 is provided with a first through hole 1011. A second through hole 1021 is provided on the surface of the protrusion 102, a third through hole 1031 is provided on the surface of the second circular protrusion 103, one end of the roller shaft 2 is provided with a water inlet channel 210 and is rotatably connected to the rotating joint 10, the circular protrusion 101 is coaxially embedded in the circular groove 201 and fits closely together, the first circular protrusion 102 is coaxially embedded in the first circular groove 202 and fits closely together, the second circular protrusion 103 is coaxially embedded in the second circular groove 203 and fits closely together, the air inlet channel 230 is connected to the air outlet end of the air compressor 9 through the first through hole 1011, the water suction channel 220 is connected to the vacuum port of the vacuum pump 6 through the second through hole 1021, and the water inlet channel 210 is connected to the water pump 5 through the third through hole 1031.

[0044] In the above embodiments, since the roller 2 needs to rotate relative to the base 1 in the working state, and different water inlet channels 210, water absorption channels 220 and air inlet channels 230 are arranged inside the roller 2, in order to maintain the connection structure between these channels and the outside to be stably connected, a specific rotating joint 10 is provided in itself, and the circular protrusion 101, the first annular protrusion 102 and the second annular protrusion 103 on the surface of the roller 2 are concentrically arranged, and the size and position of the circular groove 201, the first annular groove 202 and the second annular groove 203 at the end of the roller 2 correspond to each other. When the rotating joint 10 is rotatably arranged at the end of the roller 2, as shown in FIG. Figure 7 As shown, the circular protrusion 101 is embedded in the circular groove 201 and the side wall between the two is dynamically sealed, and by analogy, the first annular protrusion 102 is embedded in the first annular groove 202 and the side wall between the two is dynamically sealed, and the second annular protrusion 103 is embedded in the second annular groove 203 and the side wall between the two is dynamically sealed. When the roller shaft 2 rotates, the rotary joint 10 can be fixed relative to the base 1, and during the rotation of the roller shaft 2, the first through hole 1011 is connected to the air inlet channel 230, the second through hole 1021 is connected to the water absorption channel 220, and the third through hole 1031 is connected to the water inlet channel 210.

[0045] In the above embodiment, the dynamic seal between the side walls may be an oil film seal.

[0046] In some embodiments, the angle between the plane where the axes of the two rollers 2 are located and the horizontal plane is 10-30°.

[0047] In the above embodiment, as one of the preferred embodiments of the present invention, after the plane where the axes of the two rollers 2 are located is set at a certain acute angle with the horizontal plane, the cooling water sprayed from the first guide groove 21 on the higher roller 2 will flow along with the enameled wire to the roller 2 at the bottom. This process is beneficial to prolonging the contact time between the enameled wire and the cooling water and improving the cooling efficiency.

[0048] In some embodiments, the driving device 3 includes a driving motor 31, a driving wheel 32, a driven wheel 33 and a synchronous belt 34. The driving motor 31 is fixed on the base 1, the driving wheel 32 is keyed to the driving shaft of the driving motor 31, and each roller shaft 2 is coaxially keyed to the outer side with a driven wheel 33. The two driven wheels 33 are synchronously connected to the driving wheel 32 through a synchronous belt 34.

[0049] In the above embodiments, the driving wheel 32 and the driven wheel 33 are both pulleys, and the two driven wheels and one driving wheel 32 form a triangular arrangement. The driving motor 31 drives the driving wheel to rotate, thereby driving the two driven wheels 33 to rotate, and finally the two rollers 2 rotate in the same direction and at the same speed.

[0050] The above scheme is a preferred embodiment of the driving device 3. Any driving method in the prior art that can realize the same-direction and same-speed rotation of the two rollers 2 can be applied to the present invention.

[0051] In some embodiments, there are two water pumps 5 , and the opening at one end of the water inlet channel 210 of each roller shaft 2 away from the water spray hole 211 is connected to the water tank 4 through a different water pump 5 .

[0052] In the above embodiments, the two water pumps 5 work independently to provide water sources for the water inlet channels 210 in the two roller shafts 2 respectively.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling device for an enameled wire, characterized in that: include: A base (1), rollers (2), a driving device (3), a water tank (4), a water pump (5) and a vacuum pump (6); two rollers (2) are both arranged horizontally and rotatably on the surface of the base (1); the two rollers (2) are arranged in parallel and spaced apart; the driving device (3) is fixed on the base (1); the driving device (3) drives the two rollers (2) to rotate in the same direction at the same speed; the water tank (4) is arranged directly below the two rollers (2); one side of the water tank (4) close to the rollers (2) is open; a first guide groove (21) and a second guide groove (22) are provided on the surface of the rollers (2) along the circumferential direction; water spray holes (211) are provided on opposite side walls of the first guide groove (21); A water inlet channel (210) is provided on the inner side of the shaft (2) along the axial direction, the water inlet channel (210) is connected to the water spray hole (211), one end of the water inlet channel (210) away from the water spray hole (211) is connected to the water tank (4) through the water pump (5), the second guide groove (22) is arranged at intervals from the first guide groove (21), water absorption holes (221) are provided on the two opposite side walls of the second guide groove (22), a water absorption channel (220) is provided on the inner side of the roller shaft (2) along the axial direction, the water absorption channel (220) is connected to the water absorption hole (221), and one end of the water absorption channel (220) away from the water absorption hole (221) is connected to the vacuum port of the vacuum pump (6).

2. The cooling device for the enameled wire according to claim 1, characterized in that: It also comprises a buffer chamber (7), the top of which is provided with an air inlet (71) and an air outlet (72), one end of the water absorption channel (220) away from the water absorption hole (221) is connected to the air inlet (71), and the air outlet (72) is connected to the vacuum port of the vacuum pump (6).

3. The cooling device for the enameled wire according to claim 2, characterized in that: It also comprises a one-way valve (8), and a liquid outlet (73) is provided at the bottom of the buffer chamber (7), and the liquid outlet (73) is connected to the water tank (4) through the one-way valve (8).

4. The cooling device for the enameled wire according to claim 1, characterized in that: The invention also comprises an air compressor (9), a third guide groove (23) is provided on the surface of the roller shaft (2) along the circumferential direction, the third guide groove (23) is arranged at intervals on the side of the second guide groove (22) away from the first guide groove (21), and blowing holes (231) are provided on the two opposite side walls of the third guide groove (23), an air inlet channel (230) is provided on the inner side of the roller shaft (2) along the axial direction, the air inlet channel (230) and the air inlet hole (231) are connected to each other, and one end of the air inlet channel (230) away from the air inlet hole (231) is connected to the air outlet end of the air compressor (9).

5. The cooling device for the enameled wire according to claim 4, characterized in that: The invention also comprises a rotary joint (10), wherein a water inlet channel (210), a water suction channel (220) and an air inlet channel (230) are all connected to the same end of the roller shaft (2); one end of the roller shaft (2) provided with the water inlet channel (210) is provided with a concentrically arranged circular groove (201), a first circular groove (202) and a second circular groove (203); the water inlet channel (210) is connected to the bottom of the second circular groove (203); the water suction channel (220) is connected to the bottom of the first circular groove (202); the air inlet channel (230) is connected to the bottom of the circular groove (201); one end of the rotary joint (10) close to the roller shaft (2) is provided with a concentrically arranged circular protrusion (101), a first circular protrusion (102) and a second circular protrusion (103); a first through hole (1011) is opened on the surface of the circular protrusion (101); the first circular protrusion (102) and the second circular protrusion (103) are connected to the bottom of the circular groove (201); A second through hole (1021) is provided on the surface of the first annular protrusion (102), a third through hole (1031) is provided on the surface of the second annular protrusion (103), one end of the roller shaft (2) is provided with a water inlet channel (210) and is rotatably connected to the rotary joint (10), the circular protrusion (101) is coaxially embedded in the circular groove (201) and fits closely together, the first annular protrusion (102) is coaxially embedded in the first annular groove (202) and fits closely together, the second annular protrusion (103) is coaxially embedded in the second annular groove (203) and fits closely together, the air inlet channel (230) is connected to the air outlet end of the air compressor (9) through the first through hole (1011), the water suction channel (220) is connected to the vacuum port of the vacuum pump (6) through the second through hole (1021), and the water inlet channel (210) is connected to the water pump (5) through the third through hole (1031).

6. The cooling device for the enameled wire according to claim 1, characterized in that: The angle between the plane where the axes of the two rollers (2) are located and the horizontal plane is 10-30°.

7. The cooling device for the enameled wire according to claim 1, characterized in that: The driving device (3) comprises a driving motor (31), a driving wheel (32), a driven wheel (33) and a synchronous belt (34); the driving motor (31) is fixed on the base (1); the driving wheel (32) is keyed to the driving shaft of the driving motor (31); the outer side of each roller shaft (2) is coaxially keyed to a driven wheel (33); the two driven wheels (33) are synchronously connected to the driving wheel (32) via a synchronous belt (34).

8. The cooling device for the enameled wire according to claim 1, characterized in that: There are two water pumps (5), and the opening at one end of the water inlet channel (210) of each roller shaft (2) away from the water spray hole (211) is communicated with the water tank (4) through a different water pump (5).

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