Varnished wire heat treatment device and use method thereof

Abstract

The invention discloses a varnished wire heat treatment device and a using method thereof.The varnished wire heat treatment device comprises a plurality of sets of treatment channels (1) arranged up and down and blocking covers (10) arranged outside the two ends of the treatment channels (1), guide wheels (2) for guiding wires are arranged in the blocking covers (10), and the treatment channels (1) are sequentially a heating channel (3), a heat preservation channel (4) and a cleaning channel (5) from top to bottom; a heating pipe (6) used for heating the wire is arranged on the inner side of the heating channel (3), a heat preservation interlayer (7) is arranged on the outer side of the heating channel (3), liquid storage tanks (9) are arranged on the two sides of the upper end of the processing channel (1), and a heat exchange pipe (8) with the two ends connected with the liquid storage tanks (9) is arranged in the heat preservation interlayer (7). The possibility that the surface of the wire rod is burnt and oxidized can be reduced, and the follow-up process is prevented from being influenced.

Description

Technical Field

[0001] The invention relates to a heat treatment device and a use method thereof, in particular to an enameled wire heat treatment device and a use method thereof. Background Art

[0002] Enameled wire is a main type of winding wire, which consists of a conductor and an insulating layer. The bare wire is annealed and softened, then painted and baked for many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and environment. Therefore, the quality characteristics of various enameled wires are different, but they all have four major properties: mechanical properties, chemical properties, electrical properties, and thermal properties.

[0003] In order to improve the performance of enameled wire, it is usually necessary to anneal the enameled wire during the processing of the enameled wire. The purpose of annealing is to heat the conductor, which has become hard due to lattice changes during the die stretching process, to a certain temperature so that the molecular lattice can be rearranged to restore the softness required by the process. At the same time, the lubricant and oil stains remaining on the surface of the conductor during the stretching process are removed to make the conductor easy to paint and ensure the quality of the enameled wire.

[0004] For example, the patent with application number 202311124075.6 discloses an annealing treatment device and annealing process for enameled wire processing, which directly utilizes the functions of the heating cylinder, the insulation cylinder and the cleaning cylinder to heat, anneal and clean the copper wire. In this process, water is injected into the first hollow cavity, the second hollow cavity and the third hollow cavity in the heating cylinder, the insulation cylinder and the cleaning cylinder by utilizing the function of the water inlet pipe, and the second hollow cavity flows into the third hollow cavity, which needs to pass through the spiral heat dissipation pipe transition, and then flows into the third hollow cavity, and then is introduced into the conveying pipe and the annular pipe, and finally is sprayed out by the first electric nozzle and the second electric nozzle. In the above process, the heat emitted by the heating cylinder is used to heat the water, and the heated water flows into the spiral heat dissipation pipe, so that it releases heat to the insulation cylinder, so as to extend the cooling time of the copper wire. However, during the heating process, impurities on the surface of the wire are easily ignited in a high temperature environment, resulting in impurities adhering to the surface of the wire, affecting the subsequent process. Summary of the invention

[0005] The object of the present invention is to provide an enameled wire heat treatment device and a method for using the same, which can reduce the possibility of combustion and oxidation on the wire surface and prevent the subsequent processes from being affected.

[0006] The technical solution of the present invention is as follows: an enameled wire heat treatment device comprises a plurality of groups of processing channels arranged up and down and baffles arranged outside the two ends of the processing channels, the baffles are provided with guide wheels for guiding the wires, the processing channels are respectively a heating channel, a heat preservation channel and a cleaning channel from top to bottom, a heating tube for heating the wires is provided on the inner side of the heating channel, a heat preservation insulation layer is provided on the outer side of the heating channel, liquid storage tanks are provided on both sides of the upper end of the processing channel, heat exchange tubes connected to the liquid storage tanks at both ends are provided in the heat preservation insulation layer, a reflux pipe connecting the two groups of liquid storage tanks and provided with three-way valves at both ends is also provided between the liquid storage tanks, a steam generator is provided at one end of the three-way valve near the outlet of the heating channel, a connecting pipe for conveying water vapor to the discharge end of the heating channel is provided on the steam generator, a conveying pipe connected to the feed end of the heating channel is provided on the three-way valve near the inlet of the heating channel, a heat preservation pipe for controlling the temperature in the heat preservation channel is provided in the heat preservation channel, and a cleaning mechanism for cleaning the wires is provided in the cleaning channel.

[0007] In the aforementioned enameled wire heat treatment device, the heat exchange tube comprises a spiral tube wrapped around the thermal insulation layer, and both ends of the spiral tube are provided with conduits connected to the liquid storage tank, and the conduits are provided with a control valve.

[0008] In the aforementioned enameled wire heat treatment device, a liquid supply pipe connected to the insulation pipe is provided at the lower end of the liquid storage tank arranged at the outlet end of the heating channel, and a heating rod is provided in the liquid storage tank arranged at the outlet end of the heating channel.

[0009] In the aforementioned enameled wire heat treatment device, the insulation pipe is a metal hose, and the insulation pipe overlaps on both sides with the middle of the insulation pipe as the center. A metal bracket for fixing the insulation pipe is provided outside the insulation pipe, and a water supply pipe is provided at the lower end of the liquid outlet of the insulation pipe.

[0010] In the aforementioned enameled wire heat treatment device, the cleaning mechanism includes multiple groups of auxiliary wheels arranged in the cleaning channel and staggered up and down, a cleaning brush for cleaning the wire is provided on one side of the auxiliary wheel, a spray pipe connected to a water supply pipe is provided on the upper side of the cleaning brush, and a nozzle is provided under the spray pipe.

[0011] A method for using an enameled wire heat treatment device, characterized in that it comprises the following steps:

[0012] S1. The wire enters the processing channel through the baffle, and under the action of the guide wheel, enters the heating channel, the insulation channel and the cleaning channel from top to bottom in sequence. The wire will first enter the heating channel, and the wire will be heated by the heating tube in the heating channel. An insulation layer is provided outside the heating channel to prevent heat loss in the heating channel. The temperature in the heating channel is controlled by controlling the power of the heating tube and the liquid flow in the heat exchange tube, and the steam generator is started to make the generated water vapor flow along the processing channel to avoid high-temperature oxidation of the wire. After the wire is heated, it will enter the insulation channel;

[0013] S2. A heat preservation pipe is provided in the heat preservation channel, and the heat provided by the heat preservation pipe keeps the temperature in the heat preservation channel at a higher level. The two ends of the heat preservation pipe are overlapped, so that the temperature in the heat preservation channel can be more uniform. The metal bracket can not only fix the heat preservation pipe, but also improve the heat dissipation performance of the heat preservation pipe.

[0014] S3. Finally, the wire will be sent into the cleaning channel for cleaning. The wire will bend and move under the action of the auxiliary wheels. Under the action of the auxiliary wheels, the adhesion of impurities outside the wire will be weakened, and the impurities can be effectively removed under the action of the cleaning brush and the nozzle.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This application reduces the heat loss when heating the wire by setting a heat-insulating layer. The temperature of the heating layer is controlled by controlling the power of the heating tube and the liquid flow in the heat exchange tube. When the temperature is too high, the power of the heating tube is reduced and the liquid flow in the heat exchange tube is increased to achieve cooling. When the temperature is low, the power of the heating tube is increased and the liquid flow in the heat pipe is reduced to achieve heating, thereby improving the heating quality of the wire.

[0017] 2. The present application sets up a steam generator to generate steam and transport it to the heating channel, thereby reducing the oxygen content in the heating channel, preventing impurities on the surface of the wire from burning, and also reducing the oxidation effect of the wire. Hot water is generated through a heat exchange tube and transported to the steam generator, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the cleaning mechanism of the present invention.

[0020] The markings in the accompanying drawings are: 1-processing channel, 2-guide wheel, 3-heating channel, 4-insulation channel, 5-cleaning channel, 6-heating tube, 7-insulation barrier, 8-heat exchange tube, 9-liquid storage tank, 10-baffle, 11-reflux pipe, 12-steam generator, 13-connecting pipe, 14-delivery pipe, 15-insulation pipe, 16-three-way valve, 17-spiral tube, 18-conduit, 19-control valve, 20-liquid supply pipe, 21-auxiliary wheel, 22-cleaning brush, 23-heating rod, 24-metal bracket, 25-water supply pipe, 26-spray pipe, 27-nozzle. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment. A heat treatment device for enameled wire, comprising: Figure 1-2As shown, it includes multiple groups of processing channels 1 arranged up and down and shields 10 arranged outside the two ends of the processing channels 1, wherein the shield 10 is provided with a guide wheel 2 for guiding the wire, and the processing channel 1 is sequentially provided with a heating channel 3, a heat preservation channel 4 and a cleaning channel 5 from top to bottom, a heating pipe 6 for heating the wire is provided inside the heating channel 3, and a heat preservation insulation layer 7 is provided outside the heating channel 3, and liquid storage tanks 9 are provided on both sides of the upper end of the processing channel 1, and heat exchange pipes 8 connected to the liquid storage tanks 9 at both ends are provided in the heat preservation insulation layer 7, and the liquid storage tanks 9 are also provided with a heat exchange pipe 8 connected to the liquid storage tanks 9 at both ends. A reflux pipe 11 is provided which connects the two groups of liquid storage tanks 9 and has three-way valves 16 at both ends; a steam generator 12 is provided at one end of the three-way valve 16 near the outlet of the heating channel 3; a connecting pipe 13 for conveying water vapor to the discharge end of the heating channel 3 is provided on the steam generator 12; a conveying pipe 14 connected to the feed end of the heating channel 3 is provided on the three-way valve 16 near the inlet of the heating channel 3; an insulation pipe 15 for controlling the temperature in the insulation channel 4 is provided in the insulation channel 4; and a cleaning mechanism for cleaning the wire is provided in the cleaning channel 5.

[0023] The heat exchange tube 8 comprises a spiral tube 17 surrounding the heat-insulating layer 7 , and both ends of the spiral tube 17 are provided with conduits 18 connected to the liquid storage tank 9 , and a control valve 19 is provided on the conduit 18 .

[0024] The lower end of the liquid storage tank 9 arranged at the outlet end of the heating channel 1 is provided with a liquid supply pipe 20 connected to the insulation pipe 15, and a heating rod 23 is arranged in the liquid storage tank 9 arranged at the outlet end of the heating channel 1.

[0025] The insulation pipe 15 is a metal hose, and the insulation pipe 15 overlaps on both sides with the middle of the insulation pipe 15 as the center. A metal bracket 24 for fixing the insulation pipe 15 is provided outside the insulation pipe 15, and a water supply pipe 25 is provided at the lower end of the liquid outlet of the insulation pipe 15.

[0026] The cleaning mechanism includes multiple groups of auxiliary wheels 21 arranged in the cleaning channel 5 and staggered up and down. A cleaning brush 22 for cleaning the wire is provided on one side of the auxiliary wheel 21. A spray pipe 26 connected to a water supply pipe 25 is provided on the upper side of the cleaning brush 22, and a nozzle 27 is provided under the spray pipe 26.

[0027] A method for using an enameled wire heat treatment device, characterized in that it comprises the following steps:

[0028] S1, the wire enters the processing channel 1 through the shield 10, and under the action of the guide wheel 2, enters the heating channel 3, the insulation channel 4 and the cleaning channel 5 from top to bottom in sequence. The wire will first enter the heating channel 3, and the wire will be heated under the action of the heating tube 6 in the heating channel 3. The heating channel 3 is provided with an insulation layer 7 outside to prevent heat loss in the heating channel 3. The temperature in the heating channel 3 is controlled by controlling the power of the heating tube 6 and the liquid flow in the heat exchange tube 8, and the steam generator 12 is started to make the generated water vapor flow along the processing channel 1 to avoid high-temperature oxidation of the wire. After the heating of the wire is completed, it will enter the insulation channel 4;

[0029] S2. The insulation channel 4 is provided with an insulation pipe 15, which provides heat to maintain the temperature in the insulation channel 4 at a higher level, and the two ends of the insulation pipe 15 are overlapped, so that the temperature in the insulation channel 4 can be more uniform. The metal bracket 24 can not only fix the insulation pipe 15, but also improve the heat dissipation performance of the insulation pipe 15;

[0030] S3. Finally, the wire is sent into the cleaning channel 5 for cleaning. The wire is bent and moved under the action of the auxiliary wheel 21. Under the action of the auxiliary wheel 21, the adhesion of impurities outside the wire is weakened. Under the action of the cleaning brush 22 and the nozzle 27, the impurities can be effectively removed.

[0031] Principle of the present invention: The wire material of the present application enters the processing channel 1 from the baffle 10 and is sent out through the baffle 10. The baffle 10 can reduce the external air entering the processing channel 1, and under the action of the guide wheel 2 in the baffle 10, the wire material can pass through the heating channel 3, the insulation channel 4 and the cleaning channel 5 in sequence. The wire is heated in the heating channel 3 by the heating tube 6. The heating channel 3 is provided with a temperature sensor for detecting the temperature in the heating channel 3. The heating channel 3 is provided with a heat-insulating layer 7 outside to reduce the heat loss of the heating channel 3. The heat-insulating layer 7 is provided with a heat-exchange tube 8. The heat-exchange tube 8 includes a spiral tube 17 connected to the inner wall of the cavity of the heat-insulating layer 7. The spiral tube 17 can absorb the heat in the heating channel 3. When the heating channel needs to cool down, the liquid flow in the heat-exchange tube 8 is controlled by the control valve 19 and the power of the heating tube 6 is reduced to reduce the temperature in the heating channel 3. When the heating channel 3 needs to heat up, the temperature is increased by reducing the liquid flow in the heat-exchange tube 8 and increasing the power of the heating tube 6. In this way, the temperature control in the heating channel 3 is more accurate, and the heat treatment effect of the wire is better. The liquid that has undergone heat exchange in the heat-exchange tube will be transported to the liquid storage tank 9 at the outlet end of the heating channel for storage, and will be transported to the liquid storage tank 9 at the inlet end of the heating channel through the reflux pipe 11, so as to avoid the low temperature of the liquid entering the heat-exchange tube 8 resulting in a large temperature difference at both ends of the heating channel. A steam generator 12 is provided at one end of the three-way valve 16 near the outlet of the heating channel 3, which can generate steam and transport it to the heating channel 3, so that the steam flows from the outlet end to the inlet end of the heating channel, reducing the oxygen content in the air, avoiding the burning of impurities on the wire and serious oxidation on the surface of the wire. The hot water in the liquid storage tank is transported to the steam generator 12 to prepare steam, which can reduce energy consumption. The heated wire will be transported to the insulation channel 4 for constant temperature cooling. The setting of the insulation pipe 15 can increase the cooling time. The insulation pipe 15 adopts a metal hose. When in use, the metal hose is folded in half at the center and fixed to the inner wall of the insulation channel 4 by a metal bracket 24. The temperature at the inlet of the insulation pipe 15 is the highest, and the temperature at the outlet of the insulation pipe 15 is the lowest. In this way, the highest temperature and the lowest temperature are together, making the temperature in the insulation channel 4 more uniform. The metal bracket can not only fix the insulation pipe, but also increase the heat dissipation area. Finally, the wire will enter the cleaning channel 5 for cleaning. The wire will bend and move under the action of the auxiliary wheel. Since the auxiliary wheel 21 is staggered up and down, the two sides of the wire will be deformed, so that the impurities on the surface away from the auxiliary wheel 21 are no longer tightly combined. Under the action of the cleaning brush 22, it can be easily brushed off, and the impurities are washed down by spraying water through the nozzle. The cleaning brush 22 is installed by connecting the support rods on the two side walls of the cleaning channel. Finally, the wire will be sent out through the baffle 10. The present application can continuously perform heat treatment on the wire, and the heat treatment efficiency is high. The spray pipe 26 is buried in the upper wall of the cleaning channel. When the nozzle sprays water, multiple water curtains will be formed in the cleaning channel, which prevents the entry of external air and reduces the entry of oxygen into the present application.

Claims

1. An enameled wire heat treatment device, characterized in that: The invention comprises a plurality of processing channels (1) arranged in an upper and lower manner and shields (10) arranged outside the two ends of the processing channels (1), wherein the shields (10) are provided with guide wheels (2) for guiding the wires, the processing channels (1) are provided with a heating channel (3), a heat preservation channel (4) and a cleaning channel (5) from top to bottom, the heating channels (3) are provided with a heating pipe (6) for heating the wires, the heating channels (3) are provided with a heat preservation insulation layer (7) on the outside, liquid storage tanks (9) are provided on both sides of the upper end of the processing channels (1), the heat preservation insulation layer (7) is provided with a heat exchange pipe (8) with both ends connected to the liquid storage tank (9), and the liquid storage tank (9) is provided with a heat exchange pipe (8) between the two ends. A return pipe (11) is also provided which connects the two groups of liquid storage tanks (9) and has three-way valves (16) at both ends. A steam generator (12) is provided at one end of the three-way valve (16) near the outlet of the heating channel (3). A connecting pipe (13) for conveying water vapor to the outlet end of the heating channel (3) is provided on the steam generator (12). A conveying pipe (14) connected to the feed end of the heating channel (3) is provided on the three-way valve (16) near the inlet of the heating channel (3). A heat preservation pipe (15) for controlling the temperature in the heat preservation channel (4) is provided in the heat preservation channel (4). A cleaning mechanism for cleaning the wire is provided in the cleaning channel (5).

2. The enameled wire heat treatment device according to claim 1, characterized in that: The heat exchange tube (8) comprises a spiral tube (17) surrounding the heat-insulating insulating layer (7), and both ends of the spiral tube (17) are provided with conduits (18) connected to the liquid storage tank (9), and a control valve (19) is provided on the conduit (18).

3. The enameled wire heat treatment device according to claim 1, characterized in that: The lower end of the liquid storage tank (9) arranged at the outlet end of the heating channel (1) is provided with a liquid supply pipe (20) connected to the insulation pipe (15), and a heating rod (23) is arranged in the liquid storage tank (9) arranged at the outlet end of the heating channel (1).

4. The enameled wire heat treatment device according to claim 1, characterized in that: The insulation pipe (15) is a metal hose, and the insulation pipe (15) overlaps on both sides with the middle of the insulation pipe (15) as the center. A metal bracket (24) for fixing the insulation pipe (15) is provided outside the insulation pipe (15), and a water supply pipe (25) is provided at the lower end of the liquid outlet of the insulation pipe (15).

5. The enameled wire heat treatment device according to claim 1, characterized in that: The cleaning mechanism comprises a plurality of auxiliary wheels (21) arranged in a cleaning channel (5) and staggered in an upper and lower manner, a cleaning brush (22) for cleaning the wire is arranged on one side of the auxiliary wheel (21), a spray pipe (26) connected to a water supply pipe (25) is arranged on the upper side of the cleaning brush (22), and a spray head (27) is arranged below the spray pipe (26).

6. A method for using an enameled wire heat treatment device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, the wire enters the processing channel (1) through the baffle (10), and under the action of the guide wheel (2), enters the heating channel (3), the heat preservation channel (4) and the cleaning channel (5) from top to bottom in sequence. The wire first enters the heating channel (3), and is heated by the action of the heating tube (6) in the heating channel (3). The heating channel (3) is provided with a heat preservation layer (7) outside to prevent heat loss in the heating channel (3). The temperature in the heating channel (3) is controlled by controlling the power of the heating tube (6) and the liquid flow in the heat exchange tube (8), and the steam generator (12) is started to make the generated water vapor flow along the processing channel (1) to avoid high-temperature oxidation of the wire. After the heating of the wire is completed, it enters the heat preservation channel (4); S2. A heat preservation pipe (15) is provided in the heat preservation channel (4). The heat preservation pipe (15) provides heat so that the temperature in the heat preservation channel (4) is maintained at a higher level. The two ends of the heat preservation pipe (15) are arranged to overlap, so that the temperature in the heat preservation channel (4) can be made more uniform. The metal bracket (24) can not only fix the heat preservation pipe (15), but also improve the heat dissipation performance of the heat preservation pipe (15). S3. Finally, the wire is sent into the cleaning channel (5) for cleaning. The wire is bent and moved under the action of the auxiliary wheel (21). Under the action of the auxiliary wheel (21), the adhesion of impurities outside the wire is weakened. Under the action of the cleaning brush (22) and the nozzle (27), the impurities can be effectively removed.

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