Short-gas-path gas mixing device

Abstract

The utility model discloses a short gas path gas mixing device which comprises a gas mixing station, the gas mixing station is provided with at least one input pipeline and an output pipeline, the input pipeline is used for being connected with an external gas source so as to input single gas into the gas mixing station, and the output pipeline is used for conveying mixed gas to a cutting head; the gas mixing station is fixedly connected with the cutting head through the connecting frame and can synchronously move along with the cutting head; wherein a proportional valve is arranged in the gas mixing station and used for mixing input single gas according to a preset proportion and outputting the mixed gas to the cutting head through an output pipeline, the gas mixing station is integrated on the cutting head through a connecting frame so that follow-up of the gas mixing station and the cutting head can be achieved, and therefore the length of the output pipeline is greatly shortened; therefore, the discharging speed of residual mixed gas in the output pipeline is increased, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and more specifically to a short-path gas mixing device. Background Technology

[0002] In industrial applications such as laser processing, welding, or cutting, it is often necessary to formulate mixed gases with different compositions and contents according to different processing materials and usage requirements. For example, when cutting carbon steel, a mixture of oxygen and nitrogen is needed to improve combustion and oxidation resistance; when welding stainless steel, a mixture of argon and hydrogen is needed to protect and improve the weld quality.

[0003] To address this, existing methods often employ an externally fixed mixing station to mix different gases, and after mixing, the gas is directly introduced into the cutting head through a single conduit. However, this method has the following drawbacks: due to the fixed setting of the mixing station, the conduit connecting it to the cutting head is relatively long. Therefore, when switching mixed gases, the residual gas in the conduit needs to be purged beforehand, which seriously affects processing efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a short gas path gas mixing device, which can effectively shorten the conduit to greatly accelerate the emptying rate of residual mixed gas in the conduit, thereby improving production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A short-path gas mixing device, comprising:

[0007] A gas mixing station is provided with at least one input pipeline and one output pipeline. The input pipeline is used to connect to an external gas source to input a single gas into the gas mixing station, and the output pipeline is used to deliver the mixed gas to the cutting head.

[0008] The connecting frame is used to fix the gas mixing station to the cutting head and allows it to move synchronously with the cutting head.

[0009] The gas mixing station is equipped with a proportional valve, which is used to mix the input single gas according to a preset ratio and output it to the cutting head through the output pipeline.

[0010] As a further improvement of this utility model, the gas mixing station is arranged vertically relative to the cutting head along the height direction.

[0011] As a further improvement of this utility model, the side wall of the connecting frame is connected to the cutting head, the upper end of the connecting frame extends outward to form a connecting part, and the end of the connecting part is connected to the mixing station.

[0012] As a further improvement of this utility model, the number of connecting parts is two and they are symmetrically arranged, forming an installation cavity between the two connecting parts.

[0013] As a further improvement of this utility model, one end of the output pipeline is connected to the cutting head in a vertical direction.

[0014] As a further improvement of this utility model, the connecting frame is provided with a support frame, which is arranged around the end of the output pipe connected to the cutting head and provides support for the output pipe.

[0015] The beneficial effects of this utility model are as follows: By integrating the gas mixing station onto the cutting head through the connecting frame, the gas mixing station and the cutting head can be moved together, thereby greatly shortening the length of the output pipeline and accelerating the discharge speed of residual mixed gas in the output pipeline, thus improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall installation of this utility model.

[0017] Reference numerals: 1. Mixing station; 2. Input pipeline; 3. Output pipeline; 4. Cutting head; 5. Connecting frame; 6. Connecting part; 7. Mounting cavity; 8. Support frame. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0019] like Figure 1 As shown, a short-path gas mixing device is used to connect to a cutting head 4 to deliver a mixed gas flow into the cutting head 4. It includes a mixing station 1 and a connecting frame 5. The mixing station 1 is provided with at least one input pipe 2 and one output pipe 3. In this embodiment, the number of input pipes 2 is 3, and the three input pipes 2 are arranged in an arrangement. The input pipes 2 are used to connect to an external gas source to input a single gas into the mixing station 1. In this embodiment, the gas source is a gas tank, and different gas tanks are used to store different gases. The output pipe 3 is used to deliver the mixed gas to the cutting head 4, so that the cutting head 4 can complete the cutting action.

[0020] Furthermore, the gas mixing station 1 is fixedly connected to the cutting head 4 via the connecting frame 5 and can move synchronously with the cutting head 4, thereby realizing the integration of the gas mixing station 1, which greatly shortens the length of the output pipeline 3, thereby accelerating the discharge rate of residual mixed gas in the output pipeline 3 and improving production efficiency.

[0021] Furthermore, the mixing station 1 is equipped with a proportional valve, which is used to mix the input single gas according to a preset ratio. This is existing technology and will not be elaborated on here. The gas is output to the cutting head 4 through the output pipeline 3 to complete the mixing function.

[0022] Furthermore, the mixing station 1 is positioned vertically relative to the cutting head 4 along the height direction. The vertically positioned mixing station 1 allows the output pipe 3 to be positioned above the cutting head 4, thereby reducing the impact of the output pipe 3 on the movement of the cutting head 4 and improving safety performance.

[0023] Furthermore, the side wall of the connecting frame 5 is connected to the cutting head 4, which can be fixed by any of the existing technologies such as bolts. The upper end of the connecting frame 5 extends outward to form a connecting part 6, and the end of the connecting part 6 is connected to the mixing station 1 to realize the vertical arrangement of the mixing station 1 and the cutting head 4.

[0024] Specifically, in this embodiment, bolts are used to connect and fix the connecting part 6 to the mixing station 1.

[0025] Furthermore, there are two connecting parts 6 arranged symmetrically, and a mounting cavity 7 is formed between the two connecting parts 6 to further expand the mounting space and facilitate the installation of other devices.

[0026] Preferably, one end of the output pipe 3 is connected to the cutting head 4 in a vertical direction. The vertical orientation can further reduce the bends generated when the airflow enters the cutting head 4, thereby ensuring the flow rate of the high-speed airflow and the airflow rectification effect.

[0027] Preferably, the connecting frame 5 is provided with a support frame 8. The support frame 8 is arranged around the end of the output pipe 3 connected to the cutting head 4 and provides support for the output pipe 3. The setting of the support frame 8 can reduce the vibration of the end of the output pipe 3 caused by airflow. On the one hand, it can ensure the stable connection between the output pipe 3 and the cutting head 4, and on the other hand, it can ensure the stability of the airflow at the end of the output pipe 3.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A short gas path gas mixing device, characterized by, The utility model relates to a gas mixing station and connecting frame for cutting head, including: Gas mixing station (1), gas mixing station (1) is equipped with at least one input pipeline (2) and an output pipeline (3), the input pipeline (2) is used to connect external gas source to the single gas input in gas mixing station (1);The output pipeline (3) is used to deliver mixed gas to cutting head (4); Connecting frame (5), gas mixing station (1) is fixedly connected with cutting head (4) through connecting frame (5) and can move synchronously with cutting head (4); Wherein, the gas mixing station (1) is equipped with proportional valve, is used to mix the single gas according to the preset ratio of input and is output to cutting head (4) through the output pipeline (3).

2. The short gas path gas mixing device of claim 1, wherein The gas mixing station (1) is set up up and down along the height direction relative to cutting head (4).

3. The short gas path gas mixing device of claim 2, wherein The side wall of connecting frame (5) is connected with cutting head (4), the upper end of connecting frame (5) extends outward and forms connecting portion (6), and the end of connecting portion (6) is connected with gas mixing station (1).

4. The short gas path gas mixing device of claim 3, wherein The number of connecting portion (6) is 2 and symmetrically arranged, and mounting cavity (7) is formed between the two connecting portion (6).

5. The short gas path gas mixing device of claim 2, wherein The one end of output pipeline (3) is connected with cutting head (4) in the vertical direction.

6. The short gas path gas mixing device of claim 2, wherein The supporting frame (8) is arranged on connecting frame (5) and provides support around the one end of output pipeline (3) connected with cutting head (4).

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