Nitrogen protection device for copper large drawing machine

Abstract

The utility model discloses a copper big drawbench nitrogen protection device, including cooling pool, be provided with nitrogen chamber on the cooling pool, the top of nitrogen chamber is provided with the entrance, and its bottom is provided with the export, and the export is connected to the inside of cooling pool, the inside of nitrogen chamber is provided with annular gas pipeline, and the gas inlet of gas pipeline is connected with nitrogen generator, and the circumference of gas pipeline is provided with a plurality of nozzles, and the nozzles are obliquely arranged, the top of nitrogen chamber is provided with mounting bracket, and is provided with annealing wheel on the mounting bracket, and the copper wire is arranged on the annealing wheel, and the copper wire enters the cooling pool through nitrogen chamber, and the nitrogen generator that sets up outside imports the nitrogen into the gas pipeline, and then is sprayed through a plurality of circumferential arrangement distribution nozzles, makes nitrogen can even distribution be in the circumference of copper wire in nitrogen chamber, thereby avoids the emergence of nitrogen distribution dead angle, promotes the coverage area of nitrogen, thereby promotes the nitrogen protection effect.

Description

Technical Field

[0001] This utility model relates to the field of copper wire drawing machine technology, and in particular to a nitrogen protection device for a copper wire drawing machine. Background Technology

[0002] Copper wire is drawn in a large drawing machine to reduce its diameter and form a thinner wire. After drawing, the wire is output from the machine via a conveyor wheel. During the drawing process, the surface temperature of the copper wire is high. After exiting the machine, the wire comes into contact with the outside air, and oxidation occurs on its surface at high temperatures, forming a layer of copper oxide. This causes the wire to turn black and affects its quality.

[0003] Utility model CN211637761U discloses a nitrogen protection device for a large copper wire drawing machine. It includes an inlet nitrogen chamber, an output wheel nitrogen chamber, an outlet nitrogen chamber, a first output wheel, a second output wheel, and a nitrogen pipeline. The first output wheel is located on one side of the large drawing machine outlet, and the second output wheel is located diagonally below the first output wheel. A copper wire winding output channel is formed between the large drawing machine outlet and the inlet of the first output wheel. An inlet nitrogen chamber is provided between the large drawing machine outlet and the inlet of the first output wheel. An output wheel nitrogen chamber is provided on the first output wheel, and the output wheel nitrogen chamber is structurally compatible with the first output wheel. An outlet nitrogen chamber is provided between the outlet of the first output wheel and the inlet of the second output wheel. The inlet nitrogen chamber, the output wheel nitrogen chamber, and the outlet nitrogen chamber form a nitrogen protection channel, and are respectively connected to the nitrogen pipeline. This utility model prevents oxidation of the copper wire by providing nitrogen protection, thus improving the quality of the copper wire.

[0004] The device disclosed in the above utility model has three nitrogen chambers connected in series, namely the inlet, the output wheel, and the outlet. This can easily create dead airflow in the path of the copper wire. In particular, the connection between the output wheel and the nitrogen chamber may cause local turbulence due to the rotating parts, resulting in insufficient nitrogen coverage. Summary of the Invention

[0005] The purpose of this utility model is to provide a nitrogen protection device for copper drawing machines to solve the problem of insufficient nitrogen coverage mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen protection device for a large copper drawing machine, comprising a cooling pool, a nitrogen chamber on the cooling pool, an inlet at the top of the nitrogen chamber, an outlet at the bottom, the outlet being connected to the interior of the cooling pool, an annular gas supply pipe inside the nitrogen chamber, the gas supply port of the gas supply pipe being connected to a nitrogen generator, a plurality of nozzles arranged in a circular row on the gas supply pipe, the nozzles being inclined, a mounting frame on the top of the nitrogen chamber, an annealing wheel on the mounting frame, a copper wire laid on the annealing wheel, the copper wire entering the cooling pool through the nitrogen chamber.

[0007] Preferably, the nozzle adopts a venturi structure, with its throat cross-sectional area being smaller than the inlet cross-sectional area, inducing negative pressure to enhance nitrogen coverage.

[0008] Preferably, the nitrogen chamber is equipped with an oxygen sensor and a proportional valve to dynamically adjust the nitrogen flow rate and cooling intensity.

[0009] Preferably, a heat exchanger is provided outside the cooling pool, and the inlet and outlet of the heat exchanger are connected to the interior of the cooling pool.

[0010] Preferably, the mounting bracket is provided with a self-cleaning mechanism, which is located on the outside of the annealing wheel.

[0011] Preferably, the self-cleaning mechanism includes a bidirectional threaded rod driven by a servo motor, on which two arc-shaped scrapers are threadedly connected, and both arc-shaped scrapers are slidably connected to the mounting bracket.

[0012] Preferably, a dust collection trough is detachably connected below the two arc-shaped scrapers, and the dust collection trough is located on the side wall of the nitrogen chamber.

[0013] The beneficial effects of this utility model are: In this invention, nitrogen is introduced into the gas supply pipe by an external nitrogen generator, and then sprayed out through several circumferentially arranged nozzles. This allows the nitrogen to be evenly distributed around the circumference of the copper wire in the nitrogen chamber, thereby avoiding the occurrence of nitrogen distribution dead zones, increasing the nitrogen coverage area, and thus improving the nitrogen protection effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a nitrogen protection device for a large copper drawing machine proposed in this utility model; Figure 2 This is a side view cross-sectional structural diagram of a nitrogen protection device for a large copper drawing machine proposed in this utility model; Figure 3 This is a schematic diagram of the gas supply pipe and nozzle of a nitrogen protection device for a large copper drawing machine proposed in this utility model; Figure 4 This is a schematic diagram of the self-cleaning mechanism of a nitrogen protection device for a large copper drawing machine proposed in this utility model.

[0015] In the diagram: 1. Cooling pool; 2. Nitrogen chamber; 3. Inlet; 4. Outlet; 5. Gas supply pipe; 6. Nozzle; 7. Mounting bracket; 8. Annealing wheel; 9. Copper wire; 10. Heat exchanger; 11. Bidirectional threaded rod; 12. Arc-shaped scraper; 13. Dust collection trough. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 A nitrogen protection device for a large copper drawing machine includes a cooling pool 1, a nitrogen chamber 2 on the cooling pool 1, an inlet 3 at the top of the nitrogen chamber 2 and an outlet 4 at the bottom, the outlet 4 being connected to the interior of the cooling pool 1, an annular gas supply pipe 5 inside the nitrogen chamber 2, the gas supply port of the gas supply pipe 5 being connected to a nitrogen generator, a plurality of nozzles 6 arranged in a circular row on the gas supply pipe 5, the nozzles 6 being inclined, a mounting frame 7 on the top of the nitrogen chamber 2, an annealing wheel 8 on the mounting frame 7, a copper wire 9 laid on the annealing wheel 8, the copper wire 9 entering the cooling pool 1 through the nitrogen chamber 2.

[0018] When in use, the copper wire 9 enters the cooling tank 1 through the nitrogen chamber 2, enabling the device to provide nitrogen protection and cooling to the copper wire 9 in a coordinated manner, effectively improving the efficiency of copper wire drawing. During operation, nitrogen gas is introduced into the gas supply pipe 5 through an external nitrogen generator, and then sprayed out through several circumferentially arranged nozzles 6. This ensures that the nitrogen gas is evenly distributed around the circumference of the copper wire 9 within the nitrogen chamber 2, avoiding dead zones in nitrogen distribution, increasing the nitrogen coverage area, and thus enhancing the nitrogen protection effect.

[0019] Specifically, in this embodiment, nozzle 6 adopts a Venturi structure, with its throat cross-sectional area being smaller than the inlet cross-sectional area, inducing negative pressure to enhance nitrogen coverage. The Venturi effect generates negative pressure at the throat of nozzle 6, thereby inducing the surrounding nitrogen to be drawn in more rapidly, covering the entire circumference of copper wire 9, and further eliminating dead zones in the airflow.

[0020] Specifically, in this embodiment, an oxygen sensor and a proportional valve are installed on the nitrogen chamber 2 to dynamically adjust the nitrogen flow rate and cooling intensity. The linkage control of the oxygen sensor and the proportional valve enables dynamic adjustment of the nitrogen flow rate, thereby ensuring a sufficient supply of nitrogen.

[0021] Specifically, in this embodiment, a heat exchanger 10 is provided outside the cooling pool 1, and the inlet and outlet of the heat exchanger 10 are connected to the interior of the cooling pool 1. By setting up the heat exchanger 10, the temperature of the cooling water heated by the copper wire 9 in the cooling pool 1 can be rapidly reduced, thereby realizing the regulation and control of the temperature in the cooling pool 1 to ensure the cooling efficiency of the copper wire 9.

[0022] Specifically, in this embodiment, the mounting bracket 7 is equipped with a self-cleaning mechanism located outside the annealing wheel 8. This self-cleaning mechanism allows for the removal of debris from the copper wire 9 before it enters the nitrogen chamber 2, thereby reducing the frequency of device maintenance.

[0023] Specifically, in this embodiment, the self-cleaning mechanism includes a bidirectional threaded rod 11 driven by a servo motor. Two arc-shaped scrapers 12 are threadedly connected to the bidirectional threaded rod 11, and both arc-shaped scrapers 12 are slidably connected to the mounting bracket 7. This allows the bidirectional threaded rod 11 to drive the two arc-shaped scrapers 12 closer together, thereby achieving effective contact between the arc-shaped scrapers 12 and the copper wire 9.

[0024] Specifically, in this embodiment, a dust collection trough 13 is detachably connected below the two arc-shaped scrapers 12, and the dust collection trough 13 is located on the side wall of the nitrogen chamber 2. This allows the debris scraped off by the arc-shaped scrapers 12 to fall into the dust collection trough 13, thereby achieving unified collection and cleaning of the debris.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A nitrogen protection device for a large copper drawing machine, comprising a cooling tank (1), characterized in that: The cooling pool (1) is provided with a nitrogen chamber (2), the top of the nitrogen chamber (2) is provided with an inlet (3), and the bottom of the nitrogen chamber (2) is provided with an outlet (4). The outlet (4) is connected to the interior of the cooling pool (1). The interior of the nitrogen chamber (2) is provided with an annular gas supply pipe (5). The gas supply port of the gas supply pipe (5) is connected to a nitrogen generator. Several nozzles (6) are arranged in a circular row on the gas supply pipe (5). The nozzles (6) are inclined. The top of the nitrogen chamber (2) is provided with a mounting frame (7). An annealing wheel (8) is provided on the mounting frame (7). A copper wire (9) is laid on the annealing wheel (8). The copper wire (9) enters the cooling pool (1) through the nitrogen chamber (2).

2. The nitrogen protection device for a large copper drawing machine according to claim 1, characterized in that: The nozzle (6) adopts a venturi structure, and its throat cross-sectional area is smaller than the inlet cross-sectional area, which induces negative pressure to enhance nitrogen coverage.

3. The nitrogen protection device for a large copper drawing machine according to claim 2, characterized in that: The nitrogen chamber (2) is equipped with an oxygen sensor and a proportional valve to dynamically adjust the nitrogen flow rate and cooling intensity.

4. The nitrogen protection device for a large copper drawing machine according to claim 1, characterized in that: A heat exchanger (10) is provided on the outside of the cooling pool (1), and the inlet and outlet of the heat exchanger (10) are connected to the inside of the cooling pool (1).

5. A nitrogen protection device for a large copper drawing machine according to any one of claims 1-4, characterized in that: The mounting bracket (7) is equipped with a self-cleaning mechanism, which is located on the outside of the annealing wheel (8).

6. The nitrogen protection device for a large copper drawing machine according to claim 5, characterized in that: The self-cleaning mechanism includes a bidirectional threaded rod (11) driven by a servo motor, on which two arc-shaped scrapers (12) are threadedly connected, and both arc-shaped scrapers (12) are slidably connected to the mounting bracket (7).

7. A nitrogen protection device for a large copper drawing machine according to claim 6, characterized in that: The two arc-shaped scrapers (12) are detachably connected to a dust collection trough (13), which is located on the side wall of the nitrogen chamber (2).

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