Anti-pollution automatic air bag inflating device

Abstract

The utility model relates to the technical field of air sampling devices, in particular to an anti-pollution automatic air bag inflating device. Comprising a box body, an inner cavity of the box body is a vacuum chamber, an air bag is arranged in the vacuum chamber, and the air bag is connected with a valve, a flow meter and a filter through an air path pipeline. Meanwhile, whether gas with the set volume is inflated or not can be automatically detected and judged through a flow meter in the inflation process, or whether the gas bag is swelled or not can be checked through an observation window, after inflation is completed, the vacuum pressure relief valve can be automatically or manually opened to relieve pressure of the vacuum chamber, and the situation that the gas bag is swelled due to excessive inflation can be effectively prevented; the gas directly flows into the gas bag without passing through the vacuum pump, so that the problem of gas pollution caused by the vacuum pump can be effectively avoided, and the function of improving the precision and accuracy of data analysis is realized.

Description

Technical Field

[0001] This utility model relates to the field of air sampling device technology, and in particular to an automatic air bag inflation device for pollution prevention. Background Art

[0002] Using containers for air sampling is one of the important methods for collecting samples of pollutants or contaminated air in the atmosphere. Air bag sampling has become a primary method of air sampling due to its undeniable portability and low cost.

[0003] There are many types of gas bags, but their basic structure consists of a bag body and an air inlet. To increase gas collection efficiency, researchers generally use an air pump to directly inflate the gas bag.

[0004] However, this method has the following drawbacks: First, the collected gas passes through the air pump as it flows into the bag, making it easily contaminated by oil, dust, and other contaminants from the pump's interior, which is detrimental to improving the accuracy and precision of the analysis. Second, since the gas is pumped directly into the gas bag, if the gas contains a large amount of dust, it can easily clog the bag opening. Third, it is impossible to precisely control the volume of gas pumped into the gas bag, which can easily lead to excessively high pressure and damage to the gas bag. Therefore, how to accurately and efficiently fill the gas bag with air that is not contaminated by the air pump has become a key research issue. Based on the above, this utility model provides a pollution-proof automatic gas bag sampling device to solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic air bag inflation device that prevents pollution, aiming to improve the accuracy and precision of data analysis.

[0006] To achieve the above objectives, this utility model provides an automatic air bag inflation device for pollution prevention, including a housing. The housing is connected to a door via a door leaf. A sealing strip is provided on the inner side of the door, along with an observation window and a push-button switch. The push-button switch controls the opening and closing of the door. A vacuum gauge, indicator light, controller, vacuum pressure relief valve, and pressure relief valve outlet are provided on the outer side of the housing. The controller is located on the housing. The indicator light is electrically connected to a flow meter. The flow meter is connected to an air inlet, a filter, a first valve, and an air nozzle via an air inlet pipe. The air nozzle is connected to the air bag. A second valve is located on the air bag and controls the opening and closing of the air bag opening. The air bag is located in a vacuum chamber within the housing. The vacuum chamber is connected to the outside via a first air outlet pipe. The vacuum chamber is also connected to the outside via a pressure relief valve outlet, a second air outlet pipe, and the vacuum pressure relief valve.

[0007] The main outlet can be connected to a third outlet pipeline, which can be connected to a vacuum pump using a three-way valve; each branch of the third outlet pipeline can be individually controlled by a third valve.

[0008] The flow meter is electrically connected to the controller and calculates the volume of gas filled into the air bag. The indicator light, the push-button switch, the first valve, and the vacuum relief valve are all controlled by the controller outside the housing. The push-button switch and the vacuum relief valve can also be manually controlled.

[0009] The three-way valve can be replaced by a four-way valve depending on the power of the vacuum pump and the number of air bags to be extracted simultaneously.

[0010] The gas bag is a Tedlar polyfluoroethylene gas bag.

[0011] The filter is a detachable filter.

[0012] The air inlet can be connected to a gas pipeline, and the other end of the gas pipeline can be placed at the location where gas sampling is required, so as to enable gas sampling in locations where it is inconvenient to carry this device.

[0013] This invention relates to an automatic gas bag inflation device for pollution prevention. The device utilizes a filter connected to the gas bag, along with a flow meter. The gas bag is located within a vacuum chamber. A vacuum pump evacuates the chamber to a negative pressure environment, and atmospheric pressure difference is used to inflate the gas bag. During this process, the gas directly fills the gas bag without passing through the vacuum pump, effectively preventing dust and oil contamination of the gas being collected from the vacuum pump. Simultaneously, the flow meter monitors the gas volume entering the gas bag in real time during inflation. Once the predetermined volume is reached, the device automatically activates: an indicator light turns green, a push-button switch pops open, the first valve closes, and the vacuum relief valve opens. This greatly ensures that the gas being collected is not contaminated by the collection equipment, guaranteeing the accuracy of experimental data and thus improving the precision and accuracy of data analysis. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, which do not constitute a limitation on the present invention.

[0015] Figure 1 A front view of the pollution-proof automatic air bag inflation device provided by this utility model.

[0016] Figure 2 A top view of the pollution-proof automatic air bag inflation device provided by this utility model.

[0017] Figure 3 Left view of the pollution-proof automatic air bag inflation device provided by this utility model.

[0018] Figure 4A schematic diagram of the connection structure between the vacuum chamber and the air bag in the pollution-proof automatic air bag inflation device provided by this utility model.

[0019] Figure 5 A schematic diagram of the parallel connection of multiple pollution-proof automatic air bag inflation devices provided by this utility model.

[0020] In the diagram: 1-Box body, 2-Observation window, 3-Flow meter, 4-Filter, 5-Air inlet, 6-Vacuum gauge, 7-Indicator light, 8-Controller, 9-Push-button switch, 10-Vacuum pressure relief valve, 11-Box door, 12-Door leaflet, 13-Air inlet pipe, 14-First valve, 15-Air nozzle, 16-Air bag, 17-First outlet pipe, 18-Main outlet, 19-Vacuum chamber, 20-Pressure relief valve outlet, 21-Second outlet pipe, 22-Second valve, 23-Third valve, 24-Three-way valve, 25-Vacuum pump, 26-Third outlet pipe, 27-Vacuum pump outlet. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. In the description of the present invention, it should be particularly noted that, except for limiting terms and explicit specifications, the terms "provided with," "connected," and "linked," etc., should be interpreted broadly. For example, they can refer to a mechanical connection, an integral connection, a direct connection, or internal communication between two devices. The structural example diagrams and other accompanying drawings disclosed herein are only used to describe exemplary embodiments of the present invention to facilitate understanding of the present invention, but do not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 5 As shown, where Figure 1 This is a front view of an automatic airbag inflation device for pollution prevention. Figure 2 This is a top view of an automatic airbag inflation device for pollution prevention. Figure 3 This is a left view of an automatic airbag inflation device for pollution prevention. Figure 4 This is a schematic diagram of the connection structure between the vacuum chamber 19 and the air bag 16 of the automatic air bag inflation device for pollution prevention. Figure 5This invention provides a pollution-proof automatic gas bag inflation device, comprising a housing 1 connected to a door 11 via a door leaf 12. The outer side of the housing 1 is equipped with a vacuum gauge 6, an indicator light 7, a controller 8, and a pressure relief valve outlet 20. The inner side of the door 11 has an observation window 2 and a push-button switch 9. The controller 8 is mounted on the housing 1. A flow meter 3 is connected to an inlet 5, a filter 4, a first valve 14, and a nozzle 15 via an inlet pipe 13. The nozzle 15 is connected to a gas bag 16, which is located in a vacuum chamber 19 within the housing 1. This design improves the precision and accuracy of data analysis. It is understood that this design greatly ensures that the collected gas is not contaminated by the collection equipment, thus guaranteeing the accuracy of experimental data.

[0023] In this embodiment, the housing 1 is connected to the door 11 via a door flap 12. The door flap 12 is used for the rotation of the door 11, and the door 11 is used for internal protection.

[0024] The inner side of the chamber door 11 is equipped with a sealing strip, an observation window 2, and a push-button switch 9. The push-button switch 9 is used to control the opening and closing of the chamber door. The outer side of the chamber body 1 is equipped with a vacuum gauge 6, an indicator light 7, and a controller 8. The controller 8 is mounted on the chamber body 1. The indicator light 7 is electrically connected to a flow meter 3. The flow meter 3 is connected to the air inlet 5, filter 4, first valve 14, and air nozzle 15 through an air inlet pipe 13. The air nozzle 15 is connected to an air bag 16. The second valve 22 is located on the air bag. 16 is used to control the opening and closing of the air bag 16. The air bag 16 is located in the vacuum chamber 19 inside the housing 1. The vacuum chamber 19 is connected to the outside through the first air outlet pipe 17. The vacuum chamber 19 is also connected to the outside through the air outlet 20 of the pressure relief valve, the second air outlet pipe 21, and the vacuum pressure relief valve 10. The observation window 2 facilitates internal observation, the controller 8 facilitates manual control, the indicator light 7 facilitates the indication of working status, the flow meter 3 is used for gas volume calculation and processing, and the air nozzle 15 is used for... The device provides a stable supply of gas to the gas bag 16. The flow meter 3 is connected to the air inlet 5, the filter 4, the first valve 14, and the air nozzle 15 through the air inlet pipe 13, thus forming a gas supply path. The second valve 22 is used to control the opening and closing of the gas bag 16. The inside of the housing 1 is the vacuum chamber 19, which facilitates the installation of the gas bag 16. The flow meter 3 works in conjunction with the controller 8 and the indicator light 7, and the observation window 2 is provided to ensure that the experimenter can observe and grasp the inflation status of the gas bag 16 and the operating status of the instrument in a timely manner during the gas sampling process. At the same time, the device can realize the purpose of automatically inflating the gas bag 16. The experimenter can complete the inflation process of the gas bag 16 with one-button operation through the controller 8. The installation of the gas bag 16 adopts a quick-plug operation, which is fast and efficient. After the gas is filled, the device can be closed, the first valve 14 can be opened, and the gas bag 16 can be squeezed by hand repeatedly to achieve simple cleaning of the gas bag 16 and solve the problem of dust blocking the air inlet.

[0025] The main outlet 18 can be connected to a third outlet pipe 26, which can be connected to a vacuum pump 25 using a three-way valve 24; each branch of the third outlet pipe 26 can be individually controlled by a third valve 23. This structure can form a stable operating circuit. When only one vacuum chamber 19 is used, the main outlet 18 is in the closed state.

[0026] The flow meter 3 is electrically connected to the controller 8. The flow meter 3 calculates the volume of gas filled into the air bag 16. The indicator light 7, the push-button switch 9, the first valve 14 and the vacuum pressure relief valve 10 are all controlled by the controller 8 outside the housing 1. The push-button switch 9 and the vacuum pressure relief valve 10 can also be manually controlled. The flow meter 3 is electrically connected to the controller 8 via a cable. The flow meter 3 can calculate the volume of gas filled into the gas bag 16. The indicator light 7, the push-button switch 9, the first valve 14, and the vacuum relief valve 10 can be automatically controlled by the controller 8, and can also be manually controlled by the controller 8. Before the device operates, the volume of gas to be extracted is set. After the predetermined volume is reached, the vacuum relief valve 10 is automatically opened. During the inflation process, the indicator light 7 is red, the push-button switch 9 is locked, the first valve 14 is opened, and the vacuum relief valve 10 is closed. After inflation is completed, the indicator light 7 is green, the push-button switch 9 is released, the first valve 14 is closed, and the vacuum relief valve 10 is opened. This application allows the inflation volume to be set independently by the controller 8, which is convenient for experimental personnel to collect gas quantitatively. A flexible hose can also be installed at the air inlet. During operation, only the other end of the hose needs to be held to collect gas, which is convenient for experimental personnel to collect gas from locations that are difficult for equipment to reach, such as chimney flue gas, during actual gas collection.

[0027] Secondly, the three-way valve 24 can be replaced with a four-way valve depending on the power of the vacuum pump 25 and the number of air bags 16 to be extracted simultaneously. This design allows the application to be connected via the three-way valve 24, or, as needed, to use a four-way valve or even multiple pipelines in parallel to simultaneously extract air from multiple devices, resulting in high cleaning efficiency and flexible usage.

[0028] Then, the gas bag 16 is a Tedlar polyvinyl fluoride gas bag. The gas bag 16 is a 2L Tedlar polyvinyl fluoride gas bag. Polyvinyl fluoride material has high gas barrier properties, which can prevent gas leakage during the sampling process, and it is relatively stable, making it suitable for gas sampling in various harsh environments.

[0029] Furthermore, the filter 4 is a detachable filter. Its main purpose is to prevent dust from clogging the air inlet, and it can also be replaced as needed to filter other substances.

[0030] Finally, the air inlet 5 can be connected to a gas pipeline, with the other end of the gas pipeline placed at the location where gas sampling is needed, enabling gas sampling in locations where it is inconvenient to carry the device. The purpose of this structural design is to improve the practicality of the device.

[0031] When using an anti-pollution automatic gas bag inflation device, this application utilizes the filter 4 and the gas bag 16 in connection, along with the flow meter 3. The gas bag 16 is located inside the vacuum chamber 19. During operation, the vacuum pump 25 draws the vacuum chamber 19 to a negative pressure environment, and then uses the atmospheric pressure difference to inflate the gas bag 16. During this process, the gas does not flow through the vacuum pump 25 but directly fills the gas bag 16, effectively avoiding the contamination of the gas being collected by dust and oil in the vacuum pump 25. At the same time, during the inflation process, the flow meter 3 monitors the volume of gas filling the gas bag 16 in real time, and automatically completes the operation of the indicator light 7 turning green, the push-button switch 9 opening, the first valve 14 closing, and the vacuum pressure relief valve 10 opening after reaching the predetermined volume. This greatly ensures that the gas being collected is not contaminated by the collection equipment, ensuring the accuracy of experimental data, thereby improving the precision and accuracy of data analysis.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit other methods. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify or replace the technical solutions described in the foregoing embodiments. Such modifications and replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention. The scope of protection of the present invention should be defined in the claims.

Claims

1. An automatic airbag inflation device for pollution prevention, comprising a housing (1), the housing (1) being connected to a door (11) via a door leaf (12), characterized in that, The inner side of the box door (11) is provided with a sealing strip, and an observation window (2) and a push-button switch (9) are also provided. The push-button switch (9) is used to control the opening and closing of the box door. The outer side of the box body (1) is provided with a vacuum gauge (6), an indicator light (7), a controller (8), and a pressure relief valve outlet (20). The controller (8) is located on the box body (1). The indicator light (7) is electrically connected to the flow meter (3). The flow meter (3) is connected to the air inlet (5), the filter (4), the first valve (14), and the air nozzle (1). 5) The air inlet (13) is connected to the air bag (16), the air nozzle (15) is connected to the air bag (16), the second valve (22) is located on the air bag (16) and is used to control the opening and closing of the air bag (16). The air bag (16) is located in the vacuum chamber (19) inside the box (1). The vacuum chamber (19) is connected to the outside through the first air outlet (17). The vacuum chamber (19) is also connected to the outside through the air outlet (20) of the pressure relief valve, the second air outlet (21) and the vacuum pressure relief valve (10). The main outlet (18) can be connected to a third outlet pipeline (26), which can be connected to a vacuum pump (25) using a three-way valve (24); each branch of the third outlet pipeline (26) can be individually controlled by a third valve (23). The flow meter (3) is electrically connected to the controller (8). The flow meter (3) calculates the volume of gas filled into the air bag (16). The indicator light (7), the push-button switch (9), the first valve (14) and the vacuum relief valve (10) are all controlled by the controller (8) outside the housing (1). The push-button switch (9) and the vacuum relief valve (10) can also be manually controlled.

2. The automatic air bag inflation device for pollution prevention as described in claim 1, characterized in that, The three-way valve (24) can be replaced by a four-way valve depending on the power of the vacuum pump (25) and the number of air bags (16) that need to be extracted simultaneously.

3. The automatic air bag inflation device for pollution prevention as described in claim 1, characterized in that, The air bag (16) is a Tedlar polyfluoroethylene air bag.

4. The automatic air bag inflation device for pollution prevention as described in claim 1, characterized in that, The filter (4) is a detachable filter.

5. The automatic air bag inflation device for pollution prevention as described in claim 1, characterized in that, The air inlet (5) can be connected to a gas pipeline, and the other end of the gas pipeline can be placed at the location where gas needs to be collected, so as to realize gas collection work in some locations where it is inconvenient to carry this device.

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