Gas regulating valve group applied to low-power laser equipment

Abstract

The utility model provides a gas regulating valve group applied to low-power laser equipment, which is characterized in that an air channel and a left side air inlet channel arranged on a base are communicated with a first switch valve arranged on the upper surface of the base so as to control the ventilation and air cutoff actions of air; an oxygen channel and a right air inlet channel which are formed in the base are communicated with a second switch valve mounted on the upper surface of the base so as to control the ventilation and cutoff actions of oxygen; a right air inlet channel and an exhaust channel are formed in the base; the right air outlet channel is communicated with a proportional valve mounted on the upper surface of the base; the left air inlet channel and the right air outlet channel are communicated through a transition channel in the base, and a steel ball is arranged in the transition channel in a sliding mode to block the left air inlet channel or the right air outlet channel so as to achieve the shuttle valve function. The transition channel is communicated with a shuttle valve structure air outlet formed in the base. The shuttle valve, the proportional valve and the two sets of switch valves are integrally mounted, so that the compactness of the valve bank is improved, interfaces are reduced, and the possibility of leakage is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas regulation of laser equipment, and in particular relates to a gas regulating valve group applied to low-power laser equipment. Background Art

[0002] Laser equipment is widely used in the field of material processing, including cutting, welding, marking and surface treatment. In industries such as automobile manufacturing, electronic equipment manufacturing and aerospace, laser technology has become an indispensable tool in the production process. Low-power laser equipment uses a proportional valve to adjust the oxygen output to ensure the quality of cutting thick plates. At the same time, the other compressed air does not need to be adjusted and can be used to cut products with low quality requirements. The gas regulating valve groups currently used in the market are all connected by pipes, which not only take up a large space, but also have many interfaces and are prone to leakage. Utility Model Content

[0003] In order to reduce the installation space of a low-power gas regulating valve group and improve the stability of the gas supply, the utility model provides a gas regulating valve group for low-power laser equipment, which integrates two sets of switch valves, shuttle valves and proportional valves into the same base, thereby improving the compactness of the valve group, reducing interfaces, greatly reducing the possibility of leakage, and thus improving the stability of the gas supply.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A gas regulating valve group applied to low-power laser equipment comprises a base, wherein the base is provided with an air channel, a left air inlet, an oxygen channel, a right air inlet, an exhaust channel, a right air outlet and an air outlet of a shuttle valve structure; wherein the air channel and the left air inlet are connected to a first switch valve installed on the upper surface of the base to control the ventilation and air cut-off actions of the air; the oxygen channel and the right air inlet are connected to a second switch valve installed on the upper surface of the base to control the ventilation and air cut-off actions of the oxygen; the right air inlet, the exhaust channel and the right air outlet are connected to a proportional valve installed on the upper surface of the base; the left air inlet and the right air outlet are connected through a transition channel inside the base, and a steel ball is slidably provided in the transition channel to block the left air inlet or the right air outlet so as to realize the shuttle valve function; the above transition channel is connected to the air outlet of the shuttle valve structure opened on the base.

[0006] Furthermore, the exhaust channel is connected to the exhaust port of the proportional valve correspondingly, and a first rectangular sealing ring is provided at the connection between the two; the right air intake channel is connected to the air intake port of the proportional valve correspondingly, and a second rectangular sealing ring is provided at the connection between the two; the right air outlet channel is connected to the air outlet port of the proportional valve correspondingly, and a third rectangular sealing ring is provided at the connection between the two.

[0007] Furthermore, an O-ring a is positioned and installed in the left air inlet passage through a positioning sleeve a; an O-ring b is positioned and installed in the right air outlet passage through a positioning sleeve b; and the sliding range of the steel ball is between the O-ring a and the O-ring b.

[0008] Furthermore, the positioning sleeve a is fixed to the base via a retaining ring a, and the positioning sleeve b is fixed to the base via a retaining ring b.

[0009] Furthermore, the exhaust passage is connected to a mounting hole on the side of the base, and a muffler is installed in the mounting hole.

[0010] Furthermore, a screw plug is installed at each of the multiple process holes on the side wall of the base for opening each air channel to seal the process holes.

[0011] The beneficial effects of the utility model include:

[0012] The gas regulating valve group integrates multiple channels (air channel, air inlet channel, exhaust channel, air outlet channel, etc.) and regulating valves (first switch valve, second switch valve, proportional valve, shuttle valve function) on the base, achieving a compact structure and high integration design, reducing the space occupied by the system and improving the installation flexibility of the equipment.

[0013] The first switch valve and the second switch valve allow the selection of ventilation or gas cut-off as needed, thereby controlling the supply of air and oxygen. The proportional valve provides precise control of the gas flow rate. The gas flow rate can be precisely adjusted by adjusting the input signal of the proportional valve to meet the precise requirements of low-power laser equipment for gas supply. The shuttle valve function is realized by the design of the sliding steel ball in the transition channel, thereby realizing the rapid switching and flow distribution of the gas. The design of the shuttle valve structure avoids the possibility of gas mixing and ensures the safety of the system.

[0014] The gas regulating valve group achieves precise control of gas supply through simple switch valve and proportional valve operation, without complicated operation steps or tedious debugging process, which improves the usability of the system. The overall device structure is simple and reliable, reducing the use of components such as pipelines and adapters, facilitating maintenance and debugging, reducing installation space, improving gas supply stability, and reducing labor maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the overall structure of the utility model;

[0016] Figure 2 It is a side view of the overall structure of the utility model;

[0017] Figure 3 It is a cross-sectional view of the first position of the utility model;

[0018] Figure 4It is a cross-sectional view of the second position of the utility model;

[0019] Figure 5 It is a cross-sectional view of the third position of the utility model.

[0020] In the figure: 1, proportional valve; 2, first switch valve; 3, second switch valve; 4.1, silencer; 4.2, base; 4.3, first rectangular sealing ring; 4.4, second rectangular sealing ring; 4.5, third rectangular sealing ring; 4.6, screw plug a; 4.7, retaining ring a; 4.8, steel ball; 4.9, retaining ring b; 4.10, screw plug b; 4.11, positioning sleeve b; 4.12, O-ring b; 4.13, O-ring a; 4.14, positioning sleeve a

[0021] A.1, air channel; A.2, left air inlet; B.1, oxygen channel; B.2, right air inlet; C.1, exhaust channel; D.1, right air outlet; E.1, shuttle valve structure outlet. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "first", "second", "third", "a", "b", etc. are only used to distinguish components and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Embodiment 1:

[0025] A gas regulating valve group for low-power laser equipment, reference Figure 1 The proportional valve 1 is fixedly mounted on the front of the upper surface of the base 4.2 by screws, and the first switch valve 2 and the second switch valve 3 are installed in parallel on the rear of the upper surface of the base 4.2. In low-power laser equipment, the adjustment accuracy of gas flow and pressure is relatively low. The combination of switch valve and proportional valve can meet the needs at the same time with low control cost.

[0026] The base 4.2 is provided with an air channel A.1, a left air inlet channel A.2, an oxygen channel B.1, a right air inlet channel B.2, an exhaust channel C.1, a right air outlet channel D.1 and a shuttle valve structure air outlet E.1;

[0027] The air channel A.1 and the left air inlet channel A.2 pass through the first switch valve 2 to realize the ventilation and air cut-off of air. The oxygen channel B.1 and the right air inlet channel B.2 pass through the second switch valve 3 to realize the ventilation and air cut-off of oxygen.

[0028] The exhaust channel C.1 is connected to the mounting hole on the side of the base 4.2, and the muffler 4.1 is installed in the mounting hole on the side of the base 4.2 for exhaust and silencing; the exhaust channel C.1 is correspondingly connected to the exhaust port of the proportional valve 1, and the first rectangular sealing ring 4.3 is used to seal the exhaust port of the proportional valve 1 and the exhaust channel C.1 of the base 4.2; the right side air inlet channel B.2 is correspondingly connected to the air inlet of the proportional valve 1, and the second rectangular sealing ring 4.4 is used to seal the air inlet of the proportional valve 1 and the right side air inlet channel B.2 of the base 4.2; the right side air outlet channel D.1 is correspondingly connected to the air outlet of the proportional valve 1, and the third rectangular sealing ring 4.5 is used to seal the air outlet of the proportional valve 1 and the right side air outlet channel D.1 of the base 4.2.

[0029] The O-ring a4.13 is positioned at the left air inlet A.2 of the base 4.2 through the positioning sleeve a4.14, and is fixed to the base 4.2 with a retaining ring a4.7; the O-ring b4.12 is positioned at the right air outlet D.1 of the base 4.2 through the positioning sleeve b4.11, and is fixed to the base 4.2 with a retaining ring b4.9; the left air inlet A.2 and the right air outlet D.1 are connected through a transition channel inside the base 4.2, and the steel ball 4.8 slides in the transition channel, and the sliding range is between the O-ring a4.13 and the O-ring b4.12, and this part of the structure realizes the shuttle valve function. The screw plug a4.6 and the screw plug b4.10 respectively block the process holes on the two sides of the base 4.2.

[0030] Low-power laser equipment usually requires relatively low gas flow and pressure control. As a preferred method, the use of steel balls as dynamic seals can meet the precise control requirements under such low flow and low pressure while maintaining low cost and complexity.

[0031] The operating principle of the gas regulating valve group is as follows:

[0032] Air and oxygen control:

[0033] The first switch valve 2 controls the ventilation and air cutoff of the air channel A.1 and the left air intake duct A.2. When air needs to be introduced, the first switch valve 2 is opened to allow air to enter the left air intake duct A.2 from the air channel A.1. When air needs to be cut off, the first switch valve 2 is closed to prevent air from entering.

[0034] The second switch valve 3 controls the ventilation and shutoff of the oxygen channel B.1 and the right air intake channel B.2. When oxygen needs to be introduced, the second switch valve 3 is opened to allow oxygen to enter the right air intake channel B.2 from the oxygen channel B.1. When oxygen needs to be shut off, the second switch valve 3 is closed to prevent oxygen from entering.

[0035] Shuttle valve structure and steel ball movement:

[0036] The steel ball 4.8 sliding in the transition channel plays the function of a shuttle valve, and the steel ball blocks the left air inlet channel A.2 or the right air outlet channel D.1 as required.

[0037] When the first switch valve 2 is opened and the second switch valve 3 is closed, air flows from the air channel A.1 into the left air inlet channel A.2, and from the left air inlet channel A.2 into the transition channel, and the steel ball 4.8 is blocked at the position of the right air outlet channel D.1, thereby allowing air to flow out through the transition channel and the shuttle valve structure outlet E.1.

[0038] When the first switch valve 2 is closed, the second switch valve 3 is opened, and the proportional valve 1 is given an input signal, oxygen flows from the oxygen channel B.1 into the right air inlet duct B.2, and flows from the right air inlet duct B.2 into the right air outlet duct D.1 through the control of the proportional valve 1, and flows from the right air outlet duct D.1 into the transition channel, and the steel ball 4.8 is blocked at the position of the left air inlet duct A.2, thereby allowing oxygen to flow out through the transition channel and the shuttle valve structure outlet E.1.

[0039] Adjustment of proportional valve:

[0040] The proportional valve is connected to the right air intake duct, the exhaust duct and the right air outlet duct to adjust the flow and direction of oxygen as needed. When oxygen flows in through the right air intake duct, the proportional valve controls whether the oxygen enters the right air outlet duct or the exhaust duct, thereby achieving precise control of the oxygen flow.

[0041] The valve group combines the proportional valve and two sets of switch valve flow passages in one valve block through a compact and staggered flow passage design, which improves the integration, simplifies the installation steps, reduces the use of components such as pipes and adapters, and reduces the space requirements due to the high degree of integration. The function of the shuttle valve is integrated into the valve block, and its structure is compact and simple, durable, and easy to assemble.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A gas regulating valve assembly for low-power laser equipment, comprising a base (4.2), characterized in that: The base (4.2) is provided with an air channel (A.1), a left air inlet (A.2), an oxygen channel (B.1), a right air inlet (B.2), an exhaust channel (C.1), a right air outlet (D.1) and an air outlet of a shuttle valve structure (E.1); wherein the air channel (A.1) and the left air inlet (A.2) are connected to a first switch valve (2) installed on the upper surface of the base (4.2) to control the ventilation and air cut-off actions of the air; the oxygen channel (B.1) and the right air inlet (B.2) are connected to a second switch valve (3) installed on the upper surface of the base (4.2) to control the ventilation and air cut-off actions of the air. The invention relates to a device for producing oxygen through ventilation and air cut-off actions; the right air inlet (B.2), the exhaust channel (C.1) and the right air outlet (D.1) are connected to a proportional valve (1) installed on the upper surface of the base (4.2); the left air inlet (A.2) and the right air outlet (D.1) are connected inside the base (4.2) through a transition channel, and a steel ball (4.8) is slidably arranged in the transition channel to block the left air inlet (A.2) or the right air outlet (D.1) so as to realize the shuttle valve function; the transition channel is connected to the air outlet (E.1) of the shuttle valve structure provided on the base (4.2).

2. The gas regulating valve group for low-power laser equipment according to claim 1, characterized in that: The exhaust passage (C.1) is connected to the exhaust port of the proportional valve (1) correspondingly, and a first rectangular sealing ring (4.3) is provided at the connection between the two; the right air inlet passage (B.2) is connected to the air inlet of the proportional valve (1) correspondingly, and a second rectangular sealing ring (4.4) is provided at the connection between the two; the right air outlet passage (D.1) is connected to the air outlet of the proportional valve (1) correspondingly, and a third rectangular sealing ring (4.5) is provided at the connection between the two.

3. The gas regulating valve group for low-power laser equipment according to claim 1, characterized in that: An O-ring a (4.13) is positioned and installed in the left air inlet passage (A.2) via a positioning sleeve a (4.14); an O-ring b (4.12) is positioned and installed in the right air outlet passage (D.1) via a positioning sleeve b (4.11); and the sliding range of the steel ball (4.8) is between the O-ring a (4.13) and the O-ring b (4.12).

4. The gas regulating valve group for low-power laser equipment according to claim 3, characterized in that: The positioning sleeve a (4.14) is fixed on the base (4.2) via a retaining ring a (4.7), and the positioning sleeve b (4.11) is fixed on the base (4.2) via a retaining ring b (4.9).

5. A gas regulating valve assembly for low-power laser equipment according to any one of claims 1 to 4, characterized in that: The exhaust passage (C.1) is connected to a mounting hole on the side of the base (4.2), and a muffler (4.1) is installed in the mounting hole.

6. The gas regulating valve assembly for low-power laser equipment according to claim 5, characterized in that: A screw plug is installed at each of the multiple process holes on the side wall of the base (4.2) for opening each air channel to seal the process holes.

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