Multi-channel automatic air bag replacer

Abstract

A multi-channel automatic air bag replacer comprises a box body, a control panel and a pressure gauge, a controller is arranged in the box body, the control panel, a pressure reducing valve and a power switch are arranged on the front face of the box body, a plurality of air collecting bag connectors are arranged on the side edge of the box body, the air collecting bag connectors are communicated with one end of a three-way electromagnetic valve arranged in the box body through a tee joint, and the other end of the three-way electromagnetic valve is communicated with a pressure gauge. The other two interfaces of the three-way electromagnetic valve are respectively communicated with a vacuum pump and one end of a pressure reducing valve which are arranged in the box body through pipelines, the other end of the pressure reducing valve is communicated with a nitrogen interface arranged on the back surface of the box body, and a power socket connected with a power switch and a vacuum pump interface connected with the vacuum pump are arranged on the back surface of the box body; the controller is connected with the control panel, the vacuum pump, the three-way electromagnetic valve and the control end of the power switch. The air bag is simple in structure, convenient to operate and use, low in production cost and capable of manually and automatically controlling inflation and deflation of air so as to achieve the purpose of replacing the air in the bag, and has good social and economic benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of gas replacement devices, in particular to a multi-channel automatic air bag replacer. Background Art

[0002] Most of the existing methods of replacing the gas inside the airbag require manually pressing the airbag to discharge the internal gas, then filling the airbag with nitrogen, and then manually pressing to discharge the gas, and repeating this process many times to replace the gas inside the airbag. However, manually pressing the airbag is laborious, and only a single airbag can be replaced each time. Once there are a large number of airbags, the repeated inflation and deflation time is long, which wastes a lot of time. In addition, manual gas replacement may still have the original gas remaining in the airbag, which will contaminate the sample gas that is subsequently loaded into the airbag. This is not only time-consuming and laborious, but also cannot guarantee that the gas is completely replaced.

[0003] In the prior art, there are also methods of using air pumps to automatically replace the gas in a container, but they can only replace a single air bag, which requires a high degree of manual participation, is time-consuming and labor-intensive, and results in low efficiency of gas supply and exhaust. Therefore, how to achieve automatic replacement of multiple air bags is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a multi-channel automatic air bag displacer, which can effectively solve the problem that the gas replacement of the existing equipment is time-consuming, labor-intensive and inefficient.

[0005] To achieve the above-mentioned purpose, the technical solution solved by the utility model is a multi-channel automatic air bag displacer, including a box body, a control panel and a pressure gauge, a controller is installed in the box body, a control panel, a pressure reducing valve and a power switch are installed in the front of the box body, and a plurality of air collecting bag interfaces are provided on the side of the box body, and the air collecting bag interface is connected to one end of a three-way solenoid valve installed in the box body through a three-way connection, and the other two interfaces of the three-way solenoid valve are respectively connected to a vacuum pump and one end of the pressure reducing valve installed in the box body through pipelines, and the other end of the pressure reducing valve is connected to a nitrogen interface installed on the back of the box body, and a power socket connected to the power switch and a vacuum pump interface connected to the vacuum pump are installed on the back of the box body, and the controller is connected to the control panel, the vacuum pump, the three-way solenoid valve and the control end of the power switch.

[0006] The utility model has the advantages of simple structure, convenient operation, easy use, low production cost, and can control the filling and discharge of gas manually or automatically, so as to achieve the purpose of replacing the gas in the bag, and has good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0008] Figure 2It is a rear view of the utility model.

[0009] Figure 3 It is a side view of the utility model.

[0010] Figure 4 This is a gas circuit diagram of the utility model.

[0011] Figure 5 This is a circuit diagram of the utility model. DETAILED DESCRIPTION

[0012] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings and specific circumstances.

[0013] In conjunction with the accompanying drawings, a multi-channel automatic air bag displacer is provided, comprising a box body, a control panel and a pressure gauge, wherein a controller is installed in the box body 13, a control panel 1, a pressure reducing valve 3 and a power switch 4 are installed in front of the box body 13, a plurality of air collecting bag interfaces are provided on the side of the box body 13, the air collecting bag interface is connected to one end of a three-way solenoid valve 16 installed in the box body 13 through a three-way 52, the other two interfaces of the three-way solenoid valve 16 are respectively connected to a vacuum pump 14 and one end of the pressure reducing valve 3 installed in the box body 13 through pipelines, the other end of the pressure reducing valve 3 is connected to a nitrogen interface 9 installed on the back of the box body 13, a power socket 12 connected to the power switch 4 and a vacuum pump interface 10 connected to the vacuum pump 14 are installed on the back of the box body 13, and the controller is connected to the control panel 1, the vacuum pump 14, the three-way solenoid valve 16 and the control end of the power switch 4.

[0014] In order to ensure better implementation effect, a pressure sensor 15 is installed on the pipeline between the three-way 52 and the three-way solenoid valve 16, and the data output end of the pressure sensor 15 is connected to the controller.

[0015] A pressure gauge 2 is installed in front of the box body 13 , and a data collection end of the pressure gauge 2 is installed on the pipeline between the three-way solenoid valve 16 and the pressure reducing valve 3 .

[0016] The air collecting bag interface (6 are shown in the figure) includes a valve 5, a joint 6 and a polytetrafluoroethylene tube 7. One end of the valve 5 is connected to the main pipeline 51, and the main pipeline 51 is connected to one end of the three-way solenoid valve 16 via a tee. The other end of the valve 5 is equipped with a joint 6, and the joint 6 is connected to the inlet of the air collecting bag 8 via a polytetrafluoroethylene tube 7.

[0017] The back of the box body 13 is provided with a fuse seat 11 connected to a power seat 12 .

[0018] The controller is provided with a control circuit, wherein the power socket 12 is connected to the N pin and L pin of the power switch U1 (power switch 4) via the switch K3, the V2-pin, V2+pin, V1-pin and V1+pin of the power switch U1 are respectively connected to the AG pin, V2 pin, GD pin and VC pin of the controller B1, the N pin of the power switch U1 is respectively connected to the vacuum pump 14 and one end of the three-way solenoid valve 16, and the other ends of the vacuum pump 14 and the three-way solenoid valve 16 are respectively connected to the 1 of the relay J1 Pin 0 is connected to pin 7, the L pin of the power switch U1 is connected to pin 9 and pin 6 of the relay J1 respectively, the pin 1, pin 2, pin 3 and pin 4 of the relay J1 are connected to the +5V pin, SGD pin, D02 pin and D01 pin of the controller B1 respectively, the GND pin, TXD pin, RXD pin and V12 pin of the controller B1 are connected to the GND pin, DIN pin, DOUT pin and VCC pin of the control panel 1 respectively, and the AI-DO terminal of the controller B1 is connected to the pressure sensor 15.

[0019] Among them, the controller is an STM32 microcontroller controller.

[0020] When the utility model is used, the instrument is first placed on a table in a fume hood that is firm, stable and of appropriate height, at least 300 mm away from the wall, the nitrogen interface 9 is connected to the nitrogen source, the gas collecting bag 8 to be replaced is connected to the PTFE tube 7, and the gas valves of each unit are opened for standby use. The power socket 12 is connected to a single-phase 220V AC power supply, and then the power switch 4 is turned on. The use pressure set for inflation is set on the control panel 1 (when inflating the air collecting bag 8, a safe inflation pressure should be set to prevent the air collecting bag 8 from being broken), the number of inflation and deflation times (the air collecting bag 8 should be repeatedly inflated and deflated to fully replace the gas inside, and one inflation and one deflation is considered as one replacement), and the time used for deflation (when the inflation of the air collecting bag 8 is completed, the gas inside should be deflated and then inflated). During the specific replacement process, you can manually click the "Inflate", "Stop", and "Deflate" buttons on the control panel 1 to achieve manual replacement, or you can click the motor "Auto" button to achieve automatic replacement. At this time, it will automatically inflate and deflate according to the set parameters, and automatically stop when the number of inflation and deflation (replacement) is 0.

[0021] When the replacement is automated, open the nitrogen source (such as a nitrogen bottle, which has its own pressure), gently pull out the pressure reducing valve 3 and rotate it clockwise to make the pressure reach 0.05Mpa, and then gently press it to lock it. The current pressure value is displayed on the pressure gauge 2. After the parameters are set, click the "Auto" button, and the instrument starts to inflate at the set pressure value. Nitrogen enters the gas collecting bag 8 from the nitrogen source through the pressure reducing valve 3, the three-way solenoid valve 16, the three-way, the main pipeline 51 and the gas collecting bag interface in turn. The pressure sensor 15 monitors the pipeline pressure in real time and transmits it to the control panel 1. When the set pressure is reached, the vacuum pump 14 automatically opens, and the three-way solenoid valve 16 is connected to the channel of the vacuum pump 14. The external device is connected through the vacuum pump interface 10, and the deflation is performed at the set deflation time. When the deflation setting time value is reached, it is automatically inflated again. This is repeated. When the set number of replacements is reached, the instrument automatically stops and the gas replacement is completed. Turn off the gas source and power supply.

[0022] When replacing manually, click "Inflate" manually, and the air bag will start to inflate. When you need to change the air, click "Deflate". Repeating this operation can also complete the gas replacement in the air bag, but the device will not detect the pressure in the bag in the manual working state.

[0023] The utility model has a simple structure, an integral frame structure, and adopts a cold-rolled steel plate surface spraying process, which is corrosion-resistant and durable. It adopts a high-quality oil-free diaphragm vacuum pump, which is corrosion-resistant, has a stable vacuum degree, and low noise. It is easy to operate and use, and has a low production cost. The gas filling and discharge can be controlled manually or automatically, so as to achieve the purpose of gas replacement in the bag, so that the connected container (gas collection bag) can quickly reach a clean environment, and multiple gas bags can be replaced at the same time. It is widely used in laboratories and has good social and economic benefits.

[0024] It should be pointed out that the above is only a preferred embodiment of the utility model, and does not impose any form of limitation on the utility model. Any technician familiar with the profession can use the technical content disclosed above to make changes or modify them into equivalent embodiments with equivalent changes without departing from the technical solution of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A multi-channel automatic air bag displacer, comprising a box, a control panel and a pressure gauge, It is characterized in that The box (13) is equipped with a controller. The front of the box (13) is equipped with a control panel (1), a pressure reducing valve (3) and a power switch (4). The side of the box (13) is provided with a plurality of gas collecting bag interfaces. The gas collecting bag interface is connected to one end of a three-way solenoid valve (16) installed in the box (13) through a three-way connection (52). The other two interfaces of the three-way solenoid valve (16) are respectively connected to a vacuum pump (14) installed in the box (13) and one end of the pressure reducing valve (3) through pipelines. The other end of the pressure reducing valve (3) is connected to a nitrogen interface (9) installed on the back of the box (13). The back of the box (13) is equipped with a power socket (12) connected to the power switch (4) and a vacuum pump interface (10) connected to the vacuum pump (14). The controller is connected to the control panel (1), the vacuum pump (14), the three-way solenoid valve (16) and the control end of the power switch (4).

2. The multi-channel automatic air bag displacer according to claim 1, It is characterized in that A pressure sensor (15) is installed on the pipeline between the three-way (52) and the three-way solenoid valve (16), and the data output end of the pressure sensor (15) is connected to the controller.

3. The multi-channel automatic air bag displacer according to claim 1, It is characterized in that A pressure gauge (2) is installed in front of the box (13), and a data collection end of the pressure gauge (2) is installed on the pipeline between the three-way solenoid valve (16) and the pressure reducing valve (3).

4. The multi-channel automatic air bag displacer according to claim 1, It is characterized in that The air collecting bag interface comprises a valve (5), a joint (6) and a polytetrafluoroethylene tube (7). One end of the valve (5) is connected to a main pipeline (51). The main pipeline (51) is connected to one end of a three-way solenoid valve (16) via a three-way connection. The other end of the valve (5) is provided with a joint (6). The joint (6) is connected to an inlet of the air collecting bag (8) via a polytetrafluoroethylene tube (7).

5. The multi-channel automatic air bag displacer according to claim 1, It is characterized in that The back of the box body (13) is provided with a safety seat (11) connected to a power seat (12).

6. The multi-channel automatic air bag displacer according to claim 1, It is characterized in that The controller is provided with a control circuit, wherein the power socket (12) is connected to the N pin and the L pin of the power switch U1 via the switch K3, the V2-pin, V2+pin, V1-pin and V1+pin of the power switch U1 are respectively connected to the AG pin, V2 pin, GD pin and VC pin of the controller B1, the N pin of the power switch U1 is respectively connected to one end of the vacuum pump (14) and the three-way solenoid valve (16), and the other ends of the vacuum pump (14) and the three-way solenoid valve (16) are respectively connected to the 1 pin of the relay J1. Pin 0 is connected to pin 7, the L pin of the power switch U1 is connected to pin 9 and pin 6 of the relay J1 respectively, the pin 1, pin 2, pin 3 and pin 4 of the relay J1 are connected to the +5V pin, SGD pin, D02 pin and D01 pin of the controller B1 respectively, the GND pin, TXD pin, RXD pin and V12 pin of the controller B1 are connected to the GND pin, DIN pin, DOUT pin and VCC pin of the control panel (1) respectively, and the AI-DO terminal of the controller B1 is connected to the pressure sensor (15).

Images