Laser gas filling device

Abstract

The utility model discloses a laser gas filling device which comprises a lifting unit which is vertically arranged in an inverted mode. The limiting device is arranged at the lifting end of the lifting device and moves up and down along with the telescopic end of the lifting device; a containing groove for containing the lower part of the steel cylinder is formed in the lower end; the air inflation connector is arranged under the limiting device in a horizontal height fixed mode, and when the lower end of the steel cylinder is arranged in the containing groove, a connector of the steel cylinder directly faces the air inflation connector; a vacuum device; the first end of the air inlet control unit is communicated with an air source, the second end is communicated with the inflation connector, and the third end is communicated with an air inlet of the vacuum device. The device is compatible with laser gas steel cylinders with different capacities, sizes and heights, the laser gas is stably and safely subpackaged, and meanwhile, the leakage waste of the laser gas during subpackaging is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas filling, specifically to a laser gas filling device. Background Technology

[0002] Laser gases are diverse and widely used in optoelectronics, semiconductor manufacturing, solar energy, photovoltaic cells, display panels, medical research and diagnostics, and many other fields. When laser gases are used in specific applications, the purity of their components is critical; therefore, steel cylinders used to fill laser gases must undergo drying or vacuum treatment before filling.

[0003] Currently, there are many types and quantities of laser gases on the market, but most laser gas filling devices are designed for larger cylinders. Smaller laser gas cylinders are typically produced by repackaging from larger cylinders, which can easily lead to waste and the introduction of impurities. Furthermore, during the repackaging process, existing gas filling devices cannot fully accommodate the differences in capacity, size, and height of the cylinders being refilled, increasing the risk of gas leaks and cylinder tipping during filling. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of this utility model is to provide a laser gas filling device that can be compatible with laser gas bottles of different capacities, sizes and heights, stably and safely fill laser gas, and at the same time reduce laser gas leakage and waste during filling.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A laser gas filling device, characterized in that it comprises:

[0007] The lifting unit is vertically inverted.

[0008] A limiting device is installed on the lifting end of the lifting device, and moves up and down with the telescopic end of the lifting device; its lower end is provided with a receiving groove to accommodate the lower part of the steel cylinder.

[0009] The inflation connector is fixed at a horizontal height directly below the limiting device. When the lower end of the gas cylinder is placed in the receiving groove, the gas cylinder's interface is directly opposite the inflation connector.

[0010] Vacuum device;

[0011] The air intake control unit has one end connected to the air source, the second end connected to the air inlet connector, and the third end connected to the air inlet of the vacuum device.

[0012] Furthermore, the lifting unit includes:

[0013] The frame, wherein the inflation connector is mounted on the frame;

[0014] The lifting cylinder is vertically and invertedly mounted on the frame;

[0015] The lifting guide device is installed on the frame to guide and limit the extension and retraction of the lifting cylinder.

[0016] Furthermore, the lifting guide device includes:

[0017] Two horizontal plates are fixed to the frame in parallel and side by side, and the two horizontal plates are located on both sides of the lifting cylinder; the horizontal plates are provided with through vertical guide holes.

[0018] The longitudinal plate is telescopically connected to the lifting cylinder in the middle; the limiting device is set on the lower surface of the longitudinal plate.

[0019] Two guide rods are connected at their tail ends to both ends of the longitudinal plate, and at their head ends pass through guide holes.

[0020] Furthermore, the limiting device is in the shape of an open box with the opening facing vertically downwards.

[0021] Furthermore, there are two of each limiting device and inflation connector, arranged at intervals;

[0022] The intake control unit includes:

[0023] The first intake valve, with its first end connected to the air source;

[0024] The second intake valve has its first end connected to the air source.

[0025] The three-way valve has its first end connected to the second end of the first air inlet valve and the second end of the second air inlet valve, its second end connected to two air inlet connectors, and its third end connected to the air inlet of the vacuum device.

[0026] Furthermore, a pressure gauge is provided on the second end of the three-way valve.

[0027] Furthermore, the inflation connector includes:

[0028] The puncture seat has a fixed horizontal height and a vertical perforation in the middle;

[0029] The upper end of the ejector pin passes through a perforation hole and is seamlessly fixed to the puncture seat; the lower end of the ejector pin is connected to the second end of the air intake control unit; an air outlet is provided on the side of the upper end of the ejector pin.

[0030] A limiting seat is located directly below the limiting device and connected to the puncture seat. The upper end is provided with a limiting groove, which accommodates and limits the connector of the gas cylinder.

[0031] The bottom of the limiting groove is provided with a through hole for the ejector pin to pass through, and the upper end of the ejector pin passes through the through hole and is located in the limiting groove.

[0032] Furthermore, the inflatable connector also includes a height adjustment device, the lower end of which is fixedly connected to the puncture seat and the upper end of which is connected to the limiting seat. The height adjustment device adjusts the height between the upper end of the ejector pin and the bottom of the limiting groove by changing the height difference between its upper and lower ends.

[0033] Furthermore, the height adjustment device includes:

[0034] The base is fitted over the outside of the ejector pin, and the outer side is provided with external threads;

[0035] Nuts are fitted onto the base;

[0036] A hollow stud is fitted onto a base and positioned above a nut; the nut and stud are fixed to the base by tightening together; a limiting seat is positioned on the stud.

[0037] Furthermore, the upper part of the stud is provided with a groove in the shape of an internal hexagon, and the groove is collinear with the axis of the stud;

[0038] The limiting seat includes:

[0039] The hollow connector has a connecting body at the lower end that matches the groove, and an external thread on the outer surface of the upper end.

[0040] The limiting body has a limiting groove at its upper end, and a through hole at the bottom of the limiting groove for the ejector pin to pass through. The inner wall of the through hole has an internal thread that matches the connector. The connector is fixedly connected to the limiting thread.

[0041] The O-ring sealing gasket is placed inside the groove and is squeezed by the bottom of the groove and the connecting body.

[0042] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0043] 1. An air intake control unit is used to control the feeding and vacuuming during the dispensing process, completing all dispensing steps in one go, ensuring the efficiency and stability of dispensing, while reducing the workload of operation.

[0044] 2. Invert the cylinder and use the lifting device to drive the cylinder downward, forcing the one-way valve of the cylinder connector to connect with the inflation connector (puncture connection), thus connecting the cylinder and the inflation connector.

[0045] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0046] The accompanying drawings of this utility model are described below:

[0047] Figure 1 This is a front view of the laser gas filling device in this embodiment.

[0048] Figure 2 This is a cross-sectional view of the laser gas filling device in this embodiment.

[0049] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0050] Figure 4 for Figure 3 Enlarged structural diagram at point B.

[0051] Figure 5 for Figure 2 Schematic diagram of the C-section structure.

[0052] Figure 6 This is a schematic diagram of the gas path connection of the laser gas filling device in this embodiment.

[0053] In the diagram: 11. Frame; 12. Lifting cylinder; 131. Horizontal plate; 132. Vertical plate; 133. Guide rod; 2. Limiting device; 21. Receiving groove; 3. Inflation connector; 31. Puncture seat; 311. Perforation; 32. Ejector pin; 321. Air outlet; 331. Connector; 3311. Connector body; 332. Limiting body; 3321. Limiting groove; 3322. Through hole; 333. Sealing gasket; 341. Base; 342. Nut; 343. Stud; 3431. Groove; 4. Vacuum device; 51. First air inlet valve; 52. Second air inlet valve; 53. Three-way valve; 6. Pressure gauge; 7. Gas cylinder. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] Example:

[0056] like Figures 1 to 6 As shown, a laser gas filling device is characterized by comprising:

[0057] The lifting unit is vertically inverted.

[0058] The limiting device 2 is installed on the lifting end of the lifting device and moves up and down with the telescopic end of the lifting device; its lower end is provided with a receiving groove 21 for accommodating the lower part of the steel cylinder 7.

[0059] The inflation connector 3 is fixed at a horizontal height directly below the limiting device 2. When the lower end of the cylinder 7 is placed in the receiving groove 21, the interface of the cylinder 7 is directly opposite the inflation connector 3.

[0060] Vacuum device 4;

[0061] The air intake control unit has a first end connected to the air source, a second end connected to the air inlet connector 3, and a third end connected to the air inlet of the vacuum device 4, which uses a vacuum pump.

[0062] In this embodiment, the lifting unit includes:

[0063] The air inlet 3 is mounted on the frame 11.

[0064] The lifting cylinder 12 is vertically and invertedly mounted on the frame 11;

[0065] A lifting guide device is installed on the frame 11 to guide and limit the extension and retraction end of the lifting cylinder 12.

[0066] In this embodiment, the lifting guide device includes:

[0067] Two horizontal plates 131 are fixed to the frame 11 in parallel and side by side, and the two horizontal plates 131 are located on both sides of the lifting cylinder 12; the horizontal plates 131 are provided with through vertical guide holes.

[0068] The longitudinal plate 132 is telescopically connected to the lifting cylinder 12 in the middle; the limiting device 2 is set on the lower surface of the longitudinal plate 132.

[0069] Two guide rods 133 are connected at their tail ends to both ends of the longitudinal plate 132, and at their head ends pass through guide holes.

[0070] In this embodiment, the limiting device 2 is an open box shape with the opening facing vertically downwards.

[0071] In this embodiment, there are two of each of the limiting device 2 and the inflation connector 3, which are spaced apart.

[0072] The intake control unit includes:

[0073] The first intake valve 51 has its first end connected to the air source;

[0074] The second air intake valve 52 has its first end connected to the air source;

[0075] The three-way valve 53 has its first end connected to the second end of the first air inlet valve 51 and the second end of the second air inlet valve 52, its second end connected to the two air inlet connectors 3, and its third end connected to the air inlet of the vacuum device 4.

[0076] The installation of two limit devices 2 and an inflation connector 3 allows for the simultaneous filling of gas into two steel cylinders 7.

[0077] In this embodiment, a pressure gauge 6 is provided on the second end of the three-way valve 53.

[0078] Pressure gauge 6 can display the pressure inside cylinder 7, which is convenient for pressure monitoring when evacuating cylinder 7 and dispensing gas.

[0079] In this embodiment, the inflation connector 3 includes:

[0080] The puncture seat 31 has a fixed horizontal height and a vertical perforation 311 in the middle.

[0081] The upper end of the ejector pin 32 passes through the perforation 311 and is seamlessly fixed to the puncture seat 31; the lower end of the ejector pin 32 is connected to the second end of the air intake control unit; an air outlet 321 is provided on the side of the upper end of the ejector pin 32.

[0082] The limiting seat is located directly below the limiting device 2 and is connected to the puncture seat 31. The upper end is provided with a limiting groove 3321, which accommodates and limits the connector of the steel cylinder 7.

[0083] The bottom of the limiting groove 3321 is provided with a through hole 3322 for the ejector pin 32 to pass through, and the upper end of the ejector pin 32 passes through the through hole 3322 and is located in the limiting groove 3321.

[0084] The inverted cylinder 7 can be kept stable by the limiting groove 3321 on the limiting seat, and the limiting device 2 can ensure that the cylinder 7 will not tip over when dispensing gas.

[0085] When cylinder 7 is inverted, the ejector pin 32 abuts against the one-way valve of cylinder 7's connector. However, the weight of cylinder 7 itself will not cause the ejector pin 32 to open the one-way valve. During vacuuming and dispensing, to prevent the tip of the ejector pin 32 from being blocked after it abuts against the one-way valve, an outlet 321 is provided to ensure smooth airflow.

[0086] In this embodiment, the inflation connector 3 further includes a height adjustment device, the lower end of which is fixedly connected to the puncture seat 31 and the upper end of which is connected to the limiting seat. The height adjustment device adjusts the height between the upper end of the ejector pin 32 and the bottom of the limiting groove 3321 by changing the height difference between its upper and lower ends.

[0087] Different gas cylinders 7 have different models of one-way valves at their connectors. The lifting cylinder 12 cannot precisely control the descent height. If the height of the ejector pin 32 and the bottom of the limiting groove 3321 are not adjusted, the one-way valve may be damaged. Specifically, if the portion of the ejector pin 32 protruding from the bottom of the limiting groove 3321 is too long, it may damage the one-way valve of the gas cylinder 7; conversely, if it is too short, the one-way valve of the gas cylinder 7 cannot be opened, and inflation will not be possible.

[0088] In this embodiment, the height adjustment device includes:

[0089] The base 341 is outer sleeved on the outside of the ejector pin 32, and the outer side is provided with external threads;

[0090] Nut 342 is fitted onto base 341;

[0091] A hollow stud 343 is fitted onto a base 341 and positioned above a nut 342; the nut 342 and the stud 343 are fixed to the base 341 by tightening them together; a limiting seat is positioned on the stud 343.

[0092] The height of the stud 343 on the base 341 can be adjusted and fixed by the cooperation of the stud 343 and the nut 342, thereby adjusting the relative position of the limit seat and the top of the ejector pin 32.

[0093] In this embodiment, the upper part of the stud 343 is provided with a groove 3431 with an internal hexagonal shape, and the groove 3431 is collinear with the axis of the stud 343;

[0094] The limiting seat includes:

[0095] The hollow connector 331 has a connector 3311 at the lower end that matches the groove 3431, and an external thread on the outer surface of the upper end.

[0096] The limiting body 332 has a limiting groove 3321 at its upper end. The bottom of the limiting groove 3321 has a through hole 3322 for the ejector pin 32 to pass through. The inner wall of the through hole 3322 has an internal thread that matches the connector 331. The connector 331 is fixedly connected to the limiting thread.

[0097] The O-ring sealing gasket 333 is set in the groove 3431 and is squeezed by the bottom of the groove 3431 and the connecting body 3311.

[0098] Different cylinder 7 connectors have different models. To accommodate different cylinder 7 cylinders, appropriate limit seats need to be selected simultaneously. Therefore, the limit seat and stud 343 are connected in a movable manner rather than a fixed connection, which allows for faster adjustment. At the same time, the use of O-rings ensures that no gas leakage occurs during vacuuming and gas dispensing.

[0099] In this embodiment, the laser gas filling device is used as follows: the lifting cylinder 12 is controlled to retract and reset, then two gas cylinders 7 are placed on the limiting seats of the two filling connectors 3, and then the lifting cylinder 12 is controlled to extend. The limiting groove 3321 of the limiting device 2 is fitted over the bottom of the gas cylinder 7, and finally the gas cylinder 7 is pushed against the limiting seat, so that the interface of the gas cylinder 7 abuts against the bottom of the limiting groove 3321, and at the same time the ejector pin 32 opens the one-way valve of the gas cylinder 7.

[0100] Close the first valve and the second valve, control the three-way valve 53 to connect the gas filling connector 3 to the vacuum device 4, and then start the vacuum device 4 to evacuate the gas cylinder 7 until the vacuum level inside the gas cylinder 7 reaches the required level.

[0101] The control three-way valve 53 connects the gas filling connector 3 to the first valve and the second valve. The first valve and the second valve are opened, and the gas source (large steel cylinder 7) connected to the first valve and the second valve enters the steel cylinder 7 through the first valve, the second valve, and the three-way valve 53. After the gas in the steel cylinder 7 reaches the predetermined pressure, the first valve and the second valve are closed.

[0102] Finally, the lifting cylinder 12 is shortened, and the cylinder 7 is pushed up by the reset force of the one-way valve. The one-way valve is closed, and the limiting device 2 is separated from the cylinder 7. Then the cylinder 7 that has been dispensed can be removed.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A laser gas filling device, characterized in that, include: The lifting unit is vertically inverted. A limiting device is installed on the lifting end of the lifting device, and moves up and down with the telescopic end of the lifting device; its lower end is provided with a receiving groove to accommodate the lower part of the steel cylinder. The inflation connector is fixed at a horizontal height directly below the limiting device. When the lower end of the gas cylinder is placed in the receiving groove, the gas cylinder's interface is directly opposite the inflation connector. Vacuum device; The air intake control unit has one end connected to the air source, the second end connected to the air inlet connector, and the third end connected to the air inlet of the vacuum device.

2. The laser gas filling device according to claim 1, characterized in that, The lifting unit includes: The frame, wherein the inflation connector is mounted on the frame; The lifting cylinder is vertically and invertedly mounted on the frame; The lifting guide device is installed on the frame to guide and limit the extension and retraction of the lifting cylinder.

3. The laser gas filling device according to claim 2, characterized in that, The lifting guide device includes: Two horizontal plates are fixed to the frame in parallel and side by side, and the two horizontal plates are located on both sides of the lifting cylinder; the horizontal plates are provided with through vertical guide holes. The longitudinal plate is telescopically connected to the lifting cylinder in the middle; the limiting device is set on the lower surface of the longitudinal plate. Two guide rods are connected at their tail ends to both ends of the longitudinal plate, and at their head ends pass through guide holes.

4. The laser gas filling device according to claim 1, characterized in that, The limiting device is an open box shape with the opening facing vertically downwards.

5. The laser gas filling device according to claim 1, characterized in that, The limiting device and the inflation connector are both in pairs, spaced apart; The intake control unit includes: The first intake valve, with its first end connected to the air source; The second intake valve has its first end connected to the air source. The three-way valve has its first end connected to the second end of the first air inlet valve and the second end of the second air inlet valve, its second end connected to two air inlet connectors, and its third end connected to the air inlet of the vacuum device.

6. The laser gas filling device according to claim 5, characterized in that, A pressure gauge is provided on the second end of the three-way valve.

7. The laser gas filling device according to claim 1, characterized in that, The inflation connector includes: The puncture seat has a fixed horizontal height and a vertical perforation in the middle; The upper end of the ejector pin passes through a perforation hole and is seamlessly fixed to the puncture seat; the lower end of the ejector pin is connected to the second end of the air intake control unit; an air outlet is provided on the side of the upper end of the ejector pin. A limiting seat is located directly below the limiting device and connected to the puncture seat. The upper end is provided with a limiting groove, which accommodates and limits the connector of the gas cylinder. The bottom of the limiting groove is provided with a through hole for the ejector pin to pass through, and the upper end of the ejector pin passes through the through hole and is located in the limiting groove.

8. The laser gas filling device according to claim 7, characterized in that, The inflation connector also includes a height adjustment device, the lower end of which is fixedly connected to the puncture seat and the upper end of which is connected to the limiting seat. The height adjustment device adjusts the height between the upper end of the ejector pin and the bottom of the limiting groove by changing the height difference between its upper and lower ends.

9. The laser gas filling device according to claim 8, characterized in that, The height adjustment device includes: The base is fitted over the outside of the ejector pin, and the outer side is provided with external threads; Nuts are fitted onto the base; A hollow stud is fitted onto a base and positioned above a nut; the nut and stud are fixed to the base by tightening together; a limiting seat is positioned on the stud.

10. The laser gas filling device according to claim 9, characterized in that, The upper part of the stud is provided with a groove with an internal hexagonal shape, and the groove is collinear with the axis of the stud; The limiting seat includes: The hollow connector has a connecting body at the lower end that matches the groove, and an external thread on the outer surface of the upper end. The limiting body has a limiting groove at its upper end, and a through hole at the bottom of the limiting groove for the ejector pin to pass through. The inner wall of the through hole has an internal thread that matches the connector. The connector is fixedly connected to the limiting thread. The O-ring sealing gasket is placed inside the groove and is squeezed by the bottom of the groove and the connecting body.

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