Cutting torch device

Abstract

The utility model relates to the technical field of cutting torch equipment, and improves the operation safety of a cutting torch device in the prior art. The cutting torch device comprises a gas inlet pipe assembly which is configured to be connected with an external gas source and convey combustible gas and combustion-supporting gas; the mixed gas chamber is connected with the gas inlet pipe assembly and is used for realizing gas premixing and pressure balance; one end of the jet pipe assembly is connected with the outlet end of the mixed gas chamber, and a nozzle is formed in the other end and used for accelerating flowing of the mixed gas and forming stable jet flow; the one-way valve is arranged on the jet pipe assembly and used for preventing gas from flowing reversely and maintaining the system pressure stable; and the fire arresting piece is arranged on the air inlet pipe assembly and the jet pipe assembly and used for preventing flame burn-back. The device is high in integration level, forms a multiple safety protection mechanism, and remarkably reduces the operation risk.

Description

Technical Field

[0001] This utility model relates to the field of cutting torch equipment technology, and in particular to a cutting torch device. Background Technology

[0002] Traditional cutting torch devices have shortcomings in gas mixing and pressure control, easily leading to problems such as uneven mixing, large pressure fluctuations, and flame backfire, affecting cutting performance and safety. While some improvements have been made in existing technologies, drawbacks such as low gas mixing efficiency, poor heat dissipation, and weak backfire prevention remain. Therefore, there is an urgent need for a cutting torch device that can optimize gas mixing, stabilize pressure, prevent backfire, and provide overpressure protection. Utility Model Content

[0003] The purpose of this invention is to provide a cutting torch device that improves the operational safety of existing cutting torch devices.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a cutting torch device, including:

[0006] An intake manifold assembly configured to connect to an external air source and deliver combustible gas and combustion-supporting gas;

[0007] A mixing chamber, which is connected to the intake pipe assembly, is used to achieve gas premixing and pressure balance;

[0008] A jet tube assembly, one end of which is connected to the outlet end of the mixing chamber, and the other end of which forms a nozzle; the jet tube assembly is used to accelerate the flow of the mixed gas and form a stable jet.

[0009] A one-way valve is provided on the jet tube assembly to prevent gas backflow and maintain stable system pressure;

[0010] A flame arrestor is provided on the air intake pipe assembly and the jet pipe assembly to prevent flame backfire.

[0011] Furthermore, both the air intake pipe assembly and the jet pipe assembly are equipped with flow regulating valves, and the flow regulating valves are provided with flow scale lines.

[0012] Furthermore, the intake pipe assembly includes an oxygen passage and a gas passage arranged in parallel. Pressure sensors are installed on the oxygen passage and the gas passage to monitor gas pressure. The pressure sensors are electrically connected to the flow regulating valve.

[0013] Furthermore, the mixing chamber is provided with spiral guide vanes to enhance the uniformity of gas mixing; the outer wall of the mixing chamber is provided with heat dissipation fins to improve heat dissipation efficiency.

[0014] Furthermore, a pressure relief hole is provided at one end of the jet tube assembly near the mixing chamber, and an aluminum nail or a tin dot is provided in the pressure relief hole for automatic melting and pressure relief when the system pressure exceeds the limit.

[0015] Furthermore, the flame arrester on the jet tube assembly is located downstream of the one-way valve.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] This utility model discloses a cutting torch device that achieves a dual flame-arresting design by setting flame-arresting components on both the air inlet pipe assembly and the jet pipe assembly. At the same time, a one-way valve is added to maintain the pressure stability of the device, thereby forming a multi-layer safety protection system. The device has a high degree of integration and can achieve uniform gas mixing and jet stability, thus improving operational safety. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a cutting torch device provided by this utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 yes Figure 1 Enlarged view at point B in the middle;

[0022] The reference numerals in the attached figures are explained as follows:

[0023] 1. Intake pipe assembly; 10. Oxygen passage; 11. Gas passage; 12. Pressure sensor;

[0024] 2. Mixing chamber;

[0025] 3. Jet tube assembly; 30. Nozzle; 31. Pressure relief hole;

[0026] 4. Check valve; 5. Flame arrestor; 6. Flow regulating valve. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In this embodiment of the utility model, a cutting torch device is provided, such as... Figure 1 As shown, it includes an intake pipe assembly 1, a mixing chamber 2, a jet pipe assembly 3, a one-way valve 4, and a flame arrestor 5. These components work together, and through optimized design and precise coordination, achieve efficient gas mixing, stable delivery, and backfire prevention, making it particularly suitable for industrial cutting and welding operations.

[0029] Specifically, the intake pipe assembly 1, as the gas input unit of the device, is configured to connect to an external gas source and deliver combustible gas (such as acetylene, propane, etc.) and combustion-supporting gas (such as oxygen). In this embodiment, the intake pipe assembly 1 includes an oxygen channel 10 and a gas channel 11, which are arranged in parallel to ensure that the two gases are delivered independently and to avoid mutual interference.

[0030] Both the oxygen passage 10 and the gas passage 11 are equipped with flow regulating valves 6, with flow rate scale lines on the valve body for easy adjustment of gas flow by operators. Simultaneously, pressure sensors 12 are also installed on both the oxygen passage 10 and the gas passage 11 to monitor gas pressure in real time and are electrically connected to the flow regulating valves 6. When the pressure is abnormal, the flow regulating valves 6 automatically adjust their opening to ensure stable gas delivery.

[0031] The mixing chamber 2, as the core unit of gas processing, is connected to the aforementioned inlet pipe assembly 1 to achieve gas premixing while maintaining pressure balance within the device. The mixing chamber 2 and the inlet pipe assembly 1 are connected by a flange to ensure sealing and ease of assembly and disassembly.

[0032] Specifically, a spiral guide vane (not shown in the figure) is installed inside the mixing chamber 2, which causes oxygen and fuel gas to form a swirling flow during the flow process, enhancing the mixing uniformity. Heat dissipation fins (not shown in the figure) are installed on the outer wall of the mixing chamber 2 and are made of aluminum alloy material. By increasing the heat dissipation area, the temperature of the mixed gas is effectively reduced, preventing safety hazards caused by high temperature.

[0033] The jet tube assembly 3 has one end connected to the outlet end of the mixing chamber 2 via a quick-release connector, and the other end has a replaceable nozzle 30. The jet tube assembly 3 is designed to accelerate the flow of the mixed gas and form a stable jet. The diameter of the nozzle 30 can be selected and adjusted as needed.

[0034] In this embodiment, a pressure relief hole 31 is provided on the jet tube assembly 3, specifically at one end of the jet tube assembly 3 near the mixing chamber 2, and an aluminum nail or a solder dot is installed in the hole. When the system pressure exceeds a set threshold, the aluminum nail or solder dot melts due to heat, automatically releasing pressure and preventing equipment damage.

[0035] In addition, the length of the jet tube assembly 3 in this embodiment has been increased through fluid dynamics calculations. Compared with the length of the jet tube assembly 3 in the prior art, it can ensure that the mixed gas is fully accelerated in the tube, while reducing turbulence and improving cutting accuracy.

[0036] One-way valve 4 is installed on jet tube assembly 3. It adopts a spring-loaded structure and allows gas to flow in only one direction to prevent safety accidents caused by backfire or gas backflow and maintain system pressure stability.

[0037] Flame arrestor 5, installed on the air intake pipe assembly 1 and the jet pipe assembly 3, is used to prevent flame backfire. The flame arrestor 5 on the air intake pipe assembly 1 prevents the flame from burning back from the nozzle 30 to the gas source. On the jet pipe assembly 3, the flame arrestor 5 is located downstream of the one-way valve 4, thus working in conjunction with the one-way valve 4 to form double protection, ensuring that the flame cannot propagate backwards.

[0038] By equipping the intake pipe assembly 1 with a pressure sensor 12 and a flow regulating valve 6, the gas flow and pressure are automatically regulated, avoiding the impact of pressure fluctuations on the operation. The spiral guide vane design in the mixing chamber 2 ensures that oxygen and fuel are fully mixed, improving combustion efficiency and ensuring more stable cutting or welding quality. The pressure relief hole 31 on the jet pipe assembly 3 adopts a fusible design (aluminum nail or tin drip) to automatically relieve pressure when the system is over-pressured, preventing equipment damage or safety accidents.

[0039] In addition, the one-way valve 4 prevents gas backflow and maintains stable system pressure. The flame arrester 5 is arranged on the intake pipe assembly 1 and the jet pipe assembly 3, and the flame arrester 5 on the jet pipe assembly 3 is located downstream of the one-way valve 4, forming multiple protections to effectively prevent the flame from burning back to the gas source.

[0040] The flow control valve 6 features graduated markings, allowing for precise manual adjustment to meet various operating conditions. The jet tube assembly 3 has been optimized for fluid dynamics to ensure stable and durable jet flow.

[0041] In summary, the cutting torch device disclosed in this utility model can improve work efficiency, achieve uniform gas mixing and stable jet, reduce repetitive operations, and increase processing speed. Overpressure protection and backfire prevention designs can extend equipment life, reduce failure rate, and lower maintenance costs. Furthermore, it forms multiple safety protection mechanisms, significantly reducing operational risks.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A torch apparatus, comprising: include: An intake pipe assembly (1) is configured to connect to an external air source and deliver combustible gas and combustion-supporting gas; A mixing chamber (2) is connected to the air inlet pipe assembly (1) to achieve gas premixing and pressure balance; A jet tube assembly (3) is provided, one end of which is connected to the outlet end of the mixing chamber (2), and the other end of which is provided with a nozzle (30); the jet tube assembly (3) is used to accelerate the flow of the mixed gas and form a stable jet. A one-way valve (4) is provided on the jet tube assembly (3) to prevent gas backflow and maintain stable system pressure; Flame arrestor (5), which is disposed on the air intake pipe assembly (1) and the jet pipe assembly (3) to prevent flame backburning.

2. A torch apparatus as defined in claim 1, wherein Both the air intake pipe assembly (1) and the jet pipe assembly (3) are equipped with flow regulating valves (6), and the flow regulating valves (6) are equipped with flow scale lines.

3. A torch apparatus as defined in claim 2, wherein The intake pipe assembly (1) includes an oxygen channel (10) and a gas channel (11) arranged in parallel. Pressure sensors (12) are provided on the oxygen channel (10) and the gas channel (11) to monitor the gas pressure. The pressure sensors (12) are electrically connected to the flow regulating valve (6).

4. A torch apparatus as defined in claim 1, wherein The mixing chamber (2) is equipped with spiral guide vanes to enhance the uniformity of gas mixing; the outer wall of the mixing chamber (2) is equipped with heat dissipation fins to improve heat dissipation efficiency.

5. A torch apparatus as defined in claim 1, wherein The jet tube assembly (3) has a pressure relief hole (31) at one end near the mixing chamber (2). The pressure relief hole (31) is provided with an aluminum nail or a tin dropper for automatically melting and relieving pressure when the system pressure is over-pressured.

6. A torch apparatus as defined in claim 1, wherein The flame arrester (5) on the jet tube assembly (3) is located downstream of the one-way valve (4).

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