Automatic gas mixer for flame cutting machine

Abstract

The automatic gas mixer for the flame cutting machine comprises a main switch, a raw material pipe, a gas mixer body and a cutting gun, the gas mixer body comprises an input pipe, a mixing cavity, an adjusting sensor, an adjusting valve and an output pipe, and the raw material pipe and the cutting gun are connected with the input pipe and the output pipe respectively. The two ends of the mixing cavity are fixedly connected with the input pipe and the output pipe correspondingly, the adjusting sensor is arranged on the inner wall of the output pipe and used for detecting the volume ratio of all gas of mixed gas, and the adjusting valve is arranged at the joint of the raw material pipe and the input pipe and comprises a shell, an adjusting motor, a baffle, a moving groove, a control chip and a connecting groove. The shell wraps the whole adjusting valve, the control chip is connected with the adjusting sensor and the adjusting motor through wires, the moving groove is fixed to the inner wall of the shell, the baffle is arranged in the moving groove, the connecting groove is fixedly connected with the baffle, and the connecting groove is meshed with the adjusting motor.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas premixing technical field especially relates to a kind of automatic gas mixer for flame cutting machine. BACKGROUND

[0002] Flame cutting machine is a kind of metal material cutting equipment using gas and oxygen or gasoline and oxygen, so flame cutting machine has wide application in metal processing industry, especially in the occasion needing to cut thick metal plate.

[0003] Flame cutting machine uses flame to cut, so controlling flame type is the key to realize high-quality cutting, and it needs to rely on installed gas mixer to control flame type, when the volume ratio of oxygen and acetylene reaches 1.1 to 1.5, the flame type produced is neutral flame, and neutral flame is the most suitable flame type for flame cutting machine, the existing flame cutting machine lacks this kind of automatic adjustment design, so the gas mixer needs to be reformed accordingly. SUMMARY

[0004] The utility model aims at solving the shortcoming in prior art, and provides an automatic gas mixer for flame cutting machine.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: An automatic gas mixer for flame cutting machine includes master switch, raw material pipe, gas mixer and cutting torch, the gas mixer includes input pipe, mixing chamber, adjusting sensor, regulating valve and output pipe, the raw material pipe is connected with the input pipe, the cutting torch is connected with the output pipe, the mixing chamber both ends are fixedly connected with the input pipe and output pipe respectively, the adjusting sensor is gas sensor, the adjusting sensor is located on the inner wall of the output pipe, the adjusting sensor includes stop sensor and start sensor, the number of stop sensor and start sensor is equal to the number of input pipe, the regulating valve is located at the connecting place of raw material pipe and input pipe, the regulating valve includes shell, adjusting motor, baffle, moving groove, control chip and connecting groove, the shell wraps the whole regulating valve, the connecting place of shell and raw material pipe and input pipe is equipped with hole, the control chip is connected with adjusting sensor and adjusting motor switch respectively through wire, every pair of stop sensor and start sensor is connected with the regulating valve of the gas that the self detects and flows, the moving groove is located at the pipe orifice of input pipe, the moving groove is fixed on the inner wall of shell, the baffle is located in the moving groove, the cross-sectional area of baffle is greater than the cross-sectional area of input pipe, the connecting groove is fixedly connected with baffle, the inner wall of connecting groove is equipped with tooth on both sides, the adjusting motor is located beside the pipe orifice of input pipe, the working gear of adjusting motor is located in the connecting groove, and the working gear is engaged with the tooth of connecting groove inner wall.

[0006] Preferably, the measuring range of the stop sensor is the gas volume value for generating neutral flame, the measuring range of the start sensor is greater than the gas volume value for generating neutral flame, the stop sensor is connected with the pin of the control chip for controlling the stop of the adjusting motor, and the start sensor is connected with the pin of the control chip for controlling the forward rotation of the adjusting motor.

[0007] Preferably, the groove width of the connecting groove is equal to the diameter of the working gear of the adjusting motor.

[0008] Preferably, the connecting groove is provided with a first sensor and a second sensor on both sides of the surface, the first sensor and the second sensor are both pressure sensors, the first sensor is close to the pipe orifice of the input pipe, the second sensor is away from the pipe orifice of the input pipe, and the first sensor and the second sensor are connected with the closing port of the adjusting motor through wires.

[0009] Preferably, the master switch is the switch of the whole flame cutting device, and the master switch is connected with the pin of the control chip for controlling the reverse rotation of the adjusting motor.

[0010] Compared with the prior art, the automatic gas mixer for the flame cutting machine has the advantages that: because the volume of the mixing cavity is fixed, the volume values of each gas for generating neutral flame are also fixed, the adjustment sensor on the inner wall of the output pipe is used to check whether the volume values of each gas meet the requirements for generating neutral flame, thereby controlling the adjustment valve, and the adjustment valve reduces the flow of the corresponding gas, thereby ensuring that the volume ratio of the gases in the mixing cavity is always at a suitable value. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the automatic gas mixer for the flame cutting machine of the utility model;

[0012] Figure 2 It is a front view of the adjustment valve of the automatic gas mixer for the flame cutting machine of the utility model;

[0013] Figure 3 It is a top view of the adjustment valve of the automatic gas mixer for the flame cutting machine of the utility model;

[0014] Figure 4 It is a connection schematic view of the inner wall of the connecting groove of the automatic gas mixer for the flame cutting machine of the utility model;

[0015] Figure 5 It is a circuit connection schematic view of the automatic gas mixer for the flame cutting machine of the utility model. DETAILED DESCRIPTION

[0016] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application, as shown in the drawings, Figure 1 An automatic gas mixer for a flame cutting machine includes a total switch 1, a raw material pipe 2, a gas mixer 3 and a cutting gun 4, the gas mixer includes an input pipe 310, a mixing cavity 320, an adjustment sensor 330, an adjustment valve 340 and an output pipe 350, the raw material pipe 2 is connected with the input pipe 310, the cutting gun 4 is connected with the output pipe 350, the mixing cavity 320 is fixedly connected with the input pipe 310 and the output pipe 350 at both ends respectively, the adjustment sensor 330 is a gas sensor, the adjustment sensor 330 is arranged on the inner wall of the output pipe 350, the adjustment sensor 330 includes a stop sensor 331 and a start sensor 332, the number of the stop sensor 331 and the start sensor 332 is equal to the number of the input pipe 310, such a design makes each kind of raw material gas have a pair of stop sensor 331 and start sensor 332 corresponding to each other, and the adjustment valve 340 is arranged at the connection position of the raw material pipe 2 and the input pipe 310.

[0017] As Figure 2 andFigure 3 As shown, the adjusting valve 340 comprises a shell 341, an adjusting motor 342, a baffle 343, a moving groove 344, a control chip 345 and a connecting groove 346, the shell 341 wraps the whole adjusting valve 340, the shell 341 is provided with holes at the connecting position of the shell 341 and the raw material pipe 2 and the input pipe 310 to ensure the smooth flow of gas, the moving groove 344 is arranged at the pipe opening of the input pipe 310, the moving groove 344 is fixed on the inner wall of the shell 341, the baffle 343 is arranged in the moving groove 344, the cross-sectional area of the baffle 343 is greater than that of the input pipe 310, which can make the baffle 344 completely block the input pipe 310, the connecting groove 346 is fixedly connected with the baffle 343, the first sensor 3461 and the second sensor 3462 are arranged on the two sides of the connecting groove 346, the first sensor 3461 and the second sensor 3462 are both pressure sensors, the first sensor 3461 is close to the pipe opening of the input pipe 310, and the second sensor 3462 is away from the pipe opening of the input pipe 310, which can limit the moving distance of the connecting groove 346, when the first sensor 3461 contacts the inner wall of the shell 341, the baffle 343 just completely blocks the input pipe 310.

[0018] As shown in Figure 3 and Figure 4 the inner wall of the connecting groove 346 is provided with a tooth pattern on both sides, the adjusting motor 342 is arranged beside the pipe opening of the input pipe 310, the working gear 3421 of the adjusting motor 342 is arranged in the groove of the connecting groove 346, and the working gear 3421 is engaged with the tooth pattern on the inner wall of the connecting groove 346.

[0019] As shown in Figure 5As shown, the total switch 1 is the switch of the whole flame cutting machine, and the total switch 1 is connected with the pin of the control chip 345 for controlling the reverse rotation of the adjusting motor 342, so that after the total switch 1 is opened, the reverse rotation of the adjusting motor 342 makes the adjusting valve 340 completely open for the gas to pass through. The first sensor 3461 and the second sensor 3462 are both connected with the closing port of the adjusting motor 342 through wires, so that when the connecting groove 346 contacts with the inner wall of the shell 341, the adjusting motor 342 stops working, and the movement range of the connecting groove 346 is limited. The control chip 345 is connected with the adjusting sensor 330 and the adjusting motor 342 switch through wires respectively. Each pair of the stop sensor 331 and the start sensor 332 is connected with the adjusting valve 340 through which the gas flows, so that the stop sensor 331 and the start sensor 332 can control the gas volume detected by themselves. The stop sensor 331 is connected with the pin of the control chip 345 for controlling the stop of the adjusting motor 342. The start sensor 332 is connected with the pin of the control chip 345 for controlling the forward rotation of the adjusting motor 342, so that the adjusting valve 340 can be controlled by the start sensor 332 to reduce the flow of the corresponding gas, and then the stop sensor 331 can stop the adjusting valve 340 to work, thereby achieving the effect of adjusting the gas volume ratio in the mixing chamber 320.

[0020] In use, the total switch 1 is opened to start the flame cutting machine, and the total switch 1 transmits the electric signal to the control chip 345. After receiving the signal, the control chip 345 transmits the electric signal to the adjusting motor 342 to make the adjusting motor 342 reverse, and the reverse rotation of the adjusting motor 342 drives the connecting groove 346 to move away from the input pipe 310 through the working gear 3421. The movement of the connecting groove 346 drives the baffle 343 to move in the same direction. When the second sensor 3462 contacts with the inner wall of the shell 341, the second sensor 3462 transmits the electric signal to the adjusting motor 342 to stop working. At this time, the adjusting valve 340 is completely opened for the gas to pass through. Then, the gas is connected with the corresponding raw material pipe 2 to deliver the raw material to the flame cutting machine.

[0021] Further, when the volume ratio of the gas output by the mixing chamber 320 changes and does not reach the requirement for generating neutral flame, the adjusting sensor will receive a signal. The gas sensor is a sensor for measuring the volume of a certain gas. Therefore, the starting sensor 332, which is also a gas sensor, can detect the volume ratio of the gas in a fixed volume. The measuring range of the starting sensor 332 is greater than the gas volume value for generating neutral flame. Therefore, when the content of a certain raw gas is too high, the starting sensor 332 corresponding to the detection will convert the gas volume information into an electrical signal and transmit it to the control chip 345. After receiving the corresponding signal, the control chip 345 transmits a signal to the adjusting motor 342 to make the adjusting motor 342 rotate in the positive direction. The adjusting motor 342 drives the baffle 343 to move towards the pipe opening of the input pipe 310 through the meshing connecting groove 346, thereby reducing the flow of the corresponding gas. Since the stopping sensor 331 is also a gas sensor and the measuring range is the gas volume value for generating neutral flame, when the amount of the gas with excessive content is reduced to meet the condition for generating neutral flame, the corresponding stopping sensor 331 will receive a signal. After receiving the signal, the stopping sensor 331 will transmit an electrical signal to the adjusting motor 342 to make the adjusting motor 342 stop working. In this way, the flame cutting machine can generate neutral flame.

[0022] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automated gas mixer for a flame cutting machine comprising a master switch, a raw material pipe, a gas mixer, and a cutting torch, characterized in that: The gas mixer comprises an input pipe, a mixing chamber, an adjusting sensor, an adjusting valve and an output pipe, the raw material pipe is connected with the input pipe, the cutting gun is connected with the output pipe, the mixing chamber is fixedly connected with the input pipe and the output pipe at both ends respectively, the adjusting sensor is a gas sensor, the adjusting sensor is arranged on the inner wall of the output pipe, the adjusting sensor comprises a stop sensor and a start sensor, the number of the stop sensor and the start sensor is equal to the number of the input pipe, the adjusting valve is arranged at the connection between the raw material pipe and the input pipe, the adjusting valve comprises a shell, an adjusting motor, a baffle, a moving groove, a control chip and a connecting groove, the shell wraps the whole adjusting valve, the shell is provided with a hole at the connection with the raw material pipe and the input pipe, the control chip is connected with the adjusting sensor and the adjusting motor switch through wires respectively, each pair of the stop sensor and the start sensor is connected with the adjusting valve through which the gas detected by the stop sensor and the start sensor flows, the moving groove is arranged at the pipe opening of the input pipe, the moving groove is fixed on the inner wall of the shell, the baffle is arranged in the moving groove, the cross-sectional area of the baffle is greater than that of the input pipe, the connecting groove is fixedly connected with the baffle, the inner wall of the connecting groove is provided with a tooth pattern on both sides, the adjusting motor is arranged beside the pipe opening of the input pipe, the working gear of the adjusting motor is arranged in the connecting groove, and the working gear is engaged with the tooth pattern on the inner wall of the connecting groove.

2. An automated gas mixer for a flame cutting machine as claimed in claim 1, characterised in that: The measuring range of the stop sensor is the gas volume value for generating neutral flame, the measuring range of the start sensor is greater than the gas volume value for generating neutral flame, the stop sensor is connected with the pin for controlling the adjusting motor to stop of the control chip, and the start sensor is connected with the pin for controlling the adjusting motor to rotate forward of the control chip.

3. An automated gas mixer for a flame cutting machine as claimed in claim 1, characterised in that: First and second sensors are arranged on the surfaces of both sides of the connecting groove, the first and second sensors are pressure sensors, the first sensor is close to the pipe opening of the input pipe, the second sensor is away from the pipe opening of the input pipe, and the first and second sensors are connected with the closing port of the adjusting motor through wires.

4. The automated gas mixer for a flame cutting machine of claim 1, wherein: The total switch is a switch of the whole flame cutting machine, and the total switch is connected with the pin for controlling the adjusting motor to rotate reversely of the control chip.

5. An automated gas mixer for a flame cutting machine as claimed in claim 1, characterised in that: The groove width of the connecting groove is equal to the diameter of the working gear of the adjusting motor.

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