An argon filling device for reducing the oxygen content by means of a vacuum pump

Abstract

The utility model relates to argon gas filling technical field, proposes a kind of argon gas filling device using vacuum pump to reduce trace oxygen content, including support plate, the upper surface of support plate is equipped with fixed plate, the outside of fixed plate is equipped with pipe clamp, the inside of pipe clamp is penetrated and is equipped with first transmission pipeline, the upper surface of support plate is equipped with vacuum pump, the bottom end of first transmission pipeline is communicated at the input end of vacuum pump, the inside of first transmission pipeline is communicated and is equipped with automatic regulating valve, the middle part of first transmission pipeline is communicated and is equipped with electric contact pressure gauge, the inside of first transmission pipeline is communicated and is equipped with pipeline solenoid valve, the outer surface of first transmission pipeline is communicated and is equipped with analysis hand valve, the upper surface of support plate is equipped with placing rack, the upper surface of placing rack is provided with analysis mechanism. By the above technical scheme, to solve the problem that the oxygen content in the argon cylinder is relatively large after use, which makes it difficult to meet the demand of argon purity after filling.

Description

Technical Field

[0001] This utility model relates to the field of argon gas filling technology, specifically to an argon gas filling device that utilizes a vacuum pump to reduce trace oxygen content. Background Technology

[0002] Argon is a colorless, odorless, inert gas composed of argon atoms. It does not react chemically with other substances at room temperature and is insoluble in liquid metals at high temperatures, exhibiting superior performance in welding non-ferrous metals. It can be used for filling light bulbs and for arc welding of stainless steel, magnesium, aluminum, etc. Argon is typically stored in cylinders for easy movement and transportation. The filling process requires filling equipment, hence the need for argon filling devices.

[0003] Existing argon filling devices fix the gas cylinder to the output end of the filling valve, then open the filling valve to allow argon gas in the filling pipeline to enter the gas cylinder. The pressure gauge installed at the gas cylinder opening is observed to determine whether it is full. However, the oxygen content in the cylinder is relatively high during the argon filling process, which makes it difficult to fully meet the expected purity of the argon gas, resulting in a large consumption of raw materials.

[0004] The aforementioned argon filling device suffers from reduced effectiveness because the oxygen content in the argon cylinders is high after use, making it difficult to meet the required argon purity after filling. Utility Model Content

[0005] This invention proposes an argon filling device that uses a vacuum pump to reduce trace oxygen content, in order to solve the problem in the prior art where the oxygen content in the argon cylinder is relatively high after use, making it difficult to meet the purity requirements of the argon after filling.

[0006] The technical solution of this utility model is as follows: An argon gas filling device that uses a vacuum pump to reduce trace oxygen content includes a support plate, a fixing plate installed on the upper surface of the support plate, a pipe clamp installed on the outer side of the fixing plate, a first transmission pipe passing through the inside of the pipe clamp, a vacuum pump installed on the upper surface of the support plate, the bottom end of the first transmission pipe connected to the input end of the vacuum pump, an automatic regulating valve connected inside the first transmission pipe, an electric contact pressure gauge connected in the middle of the first transmission pipe, a pipeline solenoid valve connected inside the first transmission pipe, an analytical manual valve connected to the outer surface of the first transmission pipe, a placement rack installed on the upper surface of the support plate, an analytical mechanism provided on the upper surface of the placement rack, and a control mechanism installed on the side of the placement rack.

[0007] As a preferred embodiment of the argon filling device for reducing trace oxygen content using a vacuum pump according to this utility model, in order to better control the start and stop of the vacuum pump, the control mechanism includes a power control box, and the power control box is equipped with a controller and a control switch respectively. The output terminal of the electrical contact pressure gauge is electrically connected to the input terminal of the controller.

[0008] As a preferred embodiment of the argon filling device for reducing trace oxygen content using a vacuum pump according to this utility model, in order to enable the connection of multiple first transmission pipelines, the output end of the controller is electrically connected to the input end of the vacuum pump, and the output end of the controller is electrically connected to the input end of the pipeline solenoid valve.

[0009] As a preferred embodiment of the argon filling device for reducing trace oxygen content using a vacuum pump according to this utility model, in order to better analyze the gas content inside the device, the analysis mechanism includes a second transmission pipe, a third transmission pipe, a trace oxygen analyzer, and a dew point analyzer.

[0010] As a preferred embodiment of the argon filling device for reducing trace oxygen content using a vacuum pump according to this utility model, in order to prevent gas leakage in the first transmission pipe, the second transmission pipe is connected to the rear end of the analytical manual valve, and the third transmission pipe is connected to the bottom end of the second transmission pipe.

[0011] As a preferred embodiment of the argon filling device for reducing trace oxygen content using a vacuum pump described in this utility model, in order to better transmit the gas in the pipeline, a trace oxygen analyzer and a dew point analyzer are respectively installed on the front and rear sides of the upper surface of the placement frame. The front end of the third transmission pipeline is connected to the input end of the trace oxygen analyzer, and the rear end of the third transmission pipeline is connected to the input end of the dew point analyzer.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] In this invention, an electrical signal is transmitted to the control mechanism via an electrical contact pressure gauge, causing the control mechanism to open the pipeline solenoid valve. The oxygen in the argon cylinder is then extracted by a vacuum pump. Compared with the direct filling technology of the prior art, this device can avoid fluctuations in the oxygen content of argon during filling, thereby improving the purity of argon in the argon cylinder after filling.

[0014] In this invention, by opening the analysis valve, the gas in the first transmission pipeline enters the analysis mechanism for analysis. Compared with the prior art of directly filling the argon cylinder, this device can analyze the gas in the first transmission pipeline, thus avoiding the situation where residual oxygen in the first transmission pipeline enters the argon cylinder during the filling process. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

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

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model from another direction;

[0018] Figure 3 This is a schematic diagram of the mating structure of the fixing plate and the adjusting block in this utility model;

[0019] Figure 4 This is a system diagram of the present utility model.

[0020] In the diagram: 1. Support plate; 2. Fixing plate; 3. Pipe clamp; 4. First transmission pipeline; 5. Vacuum pump; 6. Automatic regulating valve; 7. Electrical contact pressure gauge; 8. Pipeline solenoid valve; 9. Analytical manual valve; 10. Placement rack; 11. Second transmission pipeline; 12. Third transmission pipeline; 13. Trace oxygen analyzer; 14. Dew point analyzer; 15. Power control box; 16. Filling valve; 17. Angle valve; 18. Transmission hose; 19. Argon cylinder; 20. Adjusting block; 21. Adjusting pin; 22. Fixing ring. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0022] like Figures 1-4 As shown, this embodiment proposes an argon filling device that uses a vacuum pump to reduce trace oxygen content, including a support plate 1;

[0023] like Figure 1 and Figure 2As shown, a fixing plate 2 is installed on the upper surface of the support plate 1, and a pipe clamp 3 is installed on the outer side of the fixing plate 2. A first transmission pipe 4 runs through the inside of the pipe clamp 3. A vacuum pump 5 is installed on the upper surface of the support plate 1. The bottom end of the first transmission pipe 4 is connected to the input end of the vacuum pump 5. An automatic regulating valve 6 is connected inside the first transmission pipe 4. The automatic regulating valve 6 is a control element in the pipeline system used to automatically regulate parameters such as medium pressure, flow rate, and temperature. The automatic regulating valve 6 can adjust the data range through operator intervention. An electric contact pressure gauge 7 is connected in the middle of the first transmission pipe 4. The electric contact pressure gauge 7 is based on the fact that the end of the spring tube in the measuring system is forced to produce a corresponding elastic deformation and displacement under the pressure of the measured medium. The displacement is amplified by the transmission mechanism of the pull rod and the gear transmission mechanism. The measured value is then indicated on the dial by the indicator on the fixed gear (along with the contact). At the same time, when it comes into contact with the contact (upper or lower limit) on the set pointer (normally closed or normally open), the circuit in the control system is disconnected or connected to achieve the purpose of automatic control and alarm signaling. The inside of the first transmission pipe 4 is connected to the pipe solenoid valve 8, which is a common solenoid valve on the market. The outer surface of the first transmission pipe 4 is connected to the analysis manual valve 9. The upper surface of the support plate 1 is equipped with a placement rack 10. The upper surface of the placement rack 10 is provided with an analysis mechanism. The side of the placement rack 10 is equipped with a control mechanism.

[0024] like Figure 2 As shown, the control mechanism includes a power control box 15, which contains a controller and a control switch. The controller is a programmable PLC controller. The output terminal of the pressure gauge 7 is electrically connected to the input terminal of the controller. The output terminal of the controller is electrically connected to the input terminal of the vacuum pump 5. The output terminal of the controller is electrically connected to the input terminal of the pipeline solenoid valve 8.

[0025] like Figure 1 As shown, the analysis mechanism includes a second transmission pipe 11, a third transmission pipe 12, a trace oxygen analyzer 13, and a dew point analyzer 14. The trace oxygen analyzer 13 and the dew point analyzer 14 can detect and analyze the gas entering the first transmission pipe 4. The trace oxygen analyzer 13 is used to measure the trace oxygen content in the gas, and the dew point analyzer 14 is used to measure the moisture content in the gas. The second transmission pipe 11 is connected to the rear end of the analysis hand valve 9, and the third transmission pipe 12 is connected to the bottom end of the second transmission pipe 11. The trace oxygen analyzer 13 and the dew point analyzer 14 are respectively installed on the front and rear sides of the upper surface of the mounting frame 10. The front end of the third transmission pipe 12 is connected to the input end of the trace oxygen analyzer 13, and the rear end of the third transmission pipe 12 is connected to the input end of the dew point analyzer 14.

[0026] It should be noted that the automatic regulating valve 6, the power control box 15, the dew point analyzer 14, and the trace oxygen analyzer 13 all require an external power supply. The external power supply is connected to the control switch via a wire that runs through the power control box 15. The control switch is then connected to the controller, the electrical contact pressure gauge 7, the pipeline solenoid valve 8, and the vacuum pump 5 via wires.

[0027] In this embodiment, as Figure 3 As shown, an adjusting block 20 is slidably connected inside the fixing plate 2. An adjusting pin 21 is threaded through the front of the adjusting block 20. One end of the adjusting pin 21, threaded through the adjusting block 20, abuts against the fixing plate 2. A fixing ring 22 is installed on the front of the adjusting block 20. Figure 1 As shown, the left end of the first transmission pipe 4 is connected to a filling valve 16, which is connected to an external gas storage tank to block the flow of argon gas in the external gas storage tank. The outer surface of the first transmission pipe 4 is connected to four sets of angle valves 17. The right end of the angle valve 17 is threaded with a transmission hose 18. An argon cylinder 19 is inserted inside the fixing ring 22. A connecting pipe is installed on the top of the argon cylinder 19. The connecting pipe is threaded to the bottom end of the transmission hose 18. A pressure gauge and a control valve are inserted on the outer surface of the connecting pipe. The fixing ring 22 and the pipe clamp 3 have the same function. The fixing ring 22 can fix the argon cylinder 19 with the same inner diameter.

[0028] In this embodiment, the adjusting pin 21 is loosened counterclockwise, and the adjusting block 20 is moved outward along the fixing plate 2. The outward movement of the adjusting block 20 causes the fixing ring 22 to move outward. After adjustment, the adjusting pin 21 is tightened clockwise to press against the fixing plate 2, so that the operator can fix argon cylinders 19 of different lengths.

[0029] Argon cylinder 19 is placed inside fixing ring 22. The bottom end of transmission hose 18 is fitted onto the top end of connecting pipe and tightened clockwise. Control valve and angle valve 17 are opened, allowing gas in argon cylinder 19 to enter first transmission pipeline 4 along transmission hose 18. After the opening of automatic regulating valve 6, gas continues to move along first transmission pipeline 4. Then, the gas pressure in first transmission pipeline 4 is detected by electric contact pressure gauge 7.

[0030] When the gas pressure in the first transmission pipe 4 meets the conditions for vacuuming, the electric contact pressure gauge 7 transmits an electrical signal to the controller, which controls the pipe solenoid valve 8 to open. At the same time, the controller controls the vacuum pump 5 to start. The output end of the vacuum pump 5 draws out the gas through the first transmission pipe 4 and discharges it along the output end of the vacuum pump 5 to extract the gas in the argon cylinder 19.

[0031] When the pressure gauge 7 detects that the vacuum effect is met in the first transmission pipeline 4, the pressure gauge 7 transmits an electrical signal to the controller. The controller then controls the pipeline solenoid valve 8 and the vacuum pump 5 to close, stopping the vacuuming of the first transmission pipeline 4. The controller also opens the analysis manual valve 9, allowing the gas in the first transmission pipeline 4 to enter the third transmission pipeline 12 along the second transmission pipeline 11. The gas then passes through the third transmission pipeline 12 to supply gas to the trace oxygen analyzer 13 and the dew point analyzer 14, allowing the trace oxygen analyzer 13 and the dew point analyzer 14 to detect the oxygen content and moisture content in the gas, respectively. Once the tests are passed, the analysis manual valve 9 is closed.

[0032] Open the filling valve 16 to allow the argon gas in the external gas storage tank to enter the argon cylinder 19 through the first transmission pipe 4 and the transmission hose 18, and fill the argon cylinder 19 with gas.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An argon gas filling device that utilizes a vacuum pump to reduce trace oxygen content, comprising a support plate (1), characterized in that, A fixing plate (2) is installed on the upper surface of the support plate (1). A pipe clamp (3) is installed on the outer side of the fixing plate (2). A first transmission pipe (4) runs through the inside of the pipe clamp (3). A vacuum pump (5) is installed on the upper surface of the support plate (1). The bottom end of the first transmission pipe (4) is connected to the input end of the vacuum pump (5). An automatic regulating valve (6) is connected inside the first transmission pipe (4). An electric contact pressure gauge (7) is connected in the middle of the first transmission pipe (4). A pipeline solenoid valve (8) is connected inside the first transmission pipe (4). An analytical manual valve (9) is connected to the outer surface of the first transmission pipe (4). A placement rack (10) is installed on the upper surface of the support plate (1). An analytical mechanism is provided on the upper surface of the placement rack (10). A control mechanism is installed on the side of the placement rack (10).

2. The argon filling device for reducing trace oxygen content using a vacuum pump according to claim 1, characterized in that, The control mechanism includes a power control box (15), inside which a controller and a control switch are installed respectively, and the output end of the electric contact pressure gauge (7) is electrically connected to the input end of the controller.

3. The argon filling device for reducing trace oxygen content using a vacuum pump according to claim 2, characterized in that, The output terminal of the controller is electrically connected to the input terminal of the vacuum pump (5), and the output terminal of the controller is electrically connected to the input terminal of the pipeline solenoid valve (8).

4. The argon filling device for reducing trace oxygen content using a vacuum pump according to claim 1, characterized in that, The analytical apparatus includes a second transmission pipeline (11), a third transmission pipeline (12), a trace oxygen analyzer (13), and a dew point analyzer (14).

5. The argon filling device for reducing trace oxygen content using a vacuum pump according to claim 4, characterized in that, The second transmission pipe (11) is connected to the rear end of the analytical hand valve (9), and the third transmission pipe (12) is connected to the bottom end of the second transmission pipe (11).

6. The argon filling device for reducing trace oxygen content using a vacuum pump according to claim 5, characterized in that, A trace oxygen analyzer (13) and a dew point analyzer (14) are respectively installed on the front and rear sides of the upper surface of the placement rack (10). The front end of the third transmission pipe (12) is connected to the input end of the trace oxygen analyzer (13), and the rear end of the third transmission pipe (12) is connected to the input end of the dew point analyzer (14).

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