Intelligent inflation and deflation structure of adjustable pressure air bag

Abstract

The utility model relates to adjustable pressure air bag technical field discloses an intelligent inflation and exhaust structure of adjustable pressure air bag, including the plugging air bag, the front end fixedly connected with pressure sensor of plugging air bag, the front end fixedly installed with pressure relief valve of plugging air bag, the front end intercommunication of plugging air bag has the exhaust pipe, the inner wall fixed mounting of exhaust pipe has first solenoid valve, the front end intercommunication of plugging air bag has fixed pipe, the inner wall fixed mounting of fixed pipe has second solenoid valve, the front end of plugging air bag is provided with exhaust assembly, one end of fixed pipe is fixedly connected with the air pump. The utility model discloses through opening first solenoid valve, through exhaust pipe and plugging air bag inside gas exhaust, realize exhaust, open the air pump and third solenoid valve, through the air pump and connecting pipe and plugging air bag inside gas extraction, through the air pipe and outward exhaust gas, make plugging air bag fast contraction, improve exhaust efficiency, shorten the construction finishing time.

Description

Technical Field

[0001] This utility model relates to the field of adjustable pressure airbag technology, and in particular to an intelligent inflation and deflation structure for an adjustable pressure airbag. Background Technology

[0002] Adjustable pressure airbags are products with a flexible bladder structure that can be filled with gas or liquid. The internal pressure can be easily adjusted using specialized components such as a manual pump and inflation valve. Adjustable pressure airbags are widely used in scenarios such as municipal pipeline sealing, medical airway management, and industrial equipment sealing.

[0003] When sealing airbags for venting, most methods achieve natural pressure relief through a single vent pipe. The gas is slowly discharged through a narrow channel, resulting in slow venting efficiency. As the pressure inside the airbag gradually decreases, the gas flow rate further slows down. In the later stages, manual repeated squeezing of the outer wall of the airbag is required to assist in venting, which increases the labor intensity of operators and prolongs the construction completion time. Therefore, we propose an intelligent inflation and deflation structure for adjustable pressure airbags. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an intelligent inflation and deflation structure for an adjustable pressure airbag.

[0005] This utility model is achieved using the following technical solution: an intelligent inflation and deflation structure for an adjustable pressure airbag, comprising a sealing airbag, a pressure sensor fixedly connected to the front end of the sealing airbag, a pressure relief valve fixedly installed at the front end of the sealing airbag, an exhaust pipe connected to the front end of the sealing airbag, a first solenoid valve fixedly installed on the inner wall of the exhaust pipe, a fixed pipe connected to the front end of the sealing airbag, a second solenoid valve fixedly installed on the inner wall of the fixed pipe, an exhaust assembly provided at the front end of the sealing airbag, an inflation pump fixedly connected to one end of the fixed pipe, a control box fixedly connected to the bottom of the inflation pump, and a microcontroller and a relay module installed inside the control box; The exhaust assembly includes a connecting pipe, one end of which is fixedly connected to an air pump, and the end of the air pump away from the connecting pipe is connected to an exhaust pipe. A third solenoid valve is fixedly installed on the inner wall of the connecting pipe.

[0006] With the above technical solution, when venting is required, the first solenoid valve is opened, and the gas inside the sealing airbag is discharged through the vent pipe, thus achieving venting. The air pump and the third solenoid valve are opened, and the gas inside the sealing airbag is extracted through the air pump and connecting pipe, and discharged outward through the vent pipe, causing the sealing airbag to contract rapidly, improving venting efficiency, and shortening the construction completion time. The pressure relief valve and electronic control form a dual protection. Even if the microcontroller or relay fails, the pressure relief valve can still automatically open when there is overpressure, avoiding the safety accident caused by the rupture of the sealing airbag.

[0007] As a further improvement to the above solution, the end of the connecting pipe away from the air pump is connected to the sealing airbag.

[0008] As a further improvement to the above solution, the bottom of the air pump is fixedly connected to the bottom of the inner wall of the control box.

[0009] The above technical solution protects the air pump and the air filling pump through the control box.

[0010] As a further improvement to the above solution, the end of the air outlet pipe away from the air pump extends to the outside of the control box.

[0011] As a further improvement to the above solution, the detection end of the pressure sensor extends into the interior of the sealing airbag.

[0012] Through the above technical solution, the pressure sensor signal is directly transmitted to the microcontroller, and after calculation, it drives the solenoid valve, air pump and exhaust pump to open and close through the relay module.

[0013] As a further improvement to the above solution, a control panel is fixedly connected to the top of the control box.

[0014] With the above technical solution, the control panel is connected to the microcontroller in the control box via wires. Users can preset the target pressure and start / stop inflation / deflation by pressing buttons. At the same time, the display screen on the control panel can display the current pressure of the sealing airbag in real time, which is convenient for manual monitoring.

[0015] As a further improvement to the above solution, the pressure sensor, the first solenoid valve, the second solenoid valve, and the third solenoid valve are electrically connected to the microcontroller and the relay module via wires.

[0016] The microcontroller model used in the above technical solution is STM32F103C8T6, and the relay module model is SRD-05VDC-SL-C.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting up an exhaust pipe and exhaust components, specifically, opens the first solenoid valve to discharge the gas inside the sealing airbag through the exhaust pipe, thereby achieving exhaust. It also opens the suction pump and the third solenoid valve to extract the gas inside the sealing airbag through the suction pump and connecting pipe, and discharges the gas outward through the exhaust pipe, causing the sealing airbag to contract rapidly, improving exhaust efficiency and shortening the construction completion time.

[0018] This invention incorporates a pressure sensor, a microcontroller, and a relay module. Specifically, when the current pressure is lower than a preset value, the microcontroller outputs a control signal through the relay module to open the second solenoid valve and the inflation pump. Gas then enters the sealing airbag through a fixed tube, inflating it. When the pressure sensor detects that the pressure inside the airbag has reached the target value, the microcontroller closes the inflation pump and the second solenoid valve through the relay module, stopping the inflation process. If a slight leak in the airbag causes the pressure to fall below the lower limit of the target value, the microcontroller repeats the inflation process, replenishing the pressure to the target value through the inflation pump and the second solenoid valve, ensuring the continuous and reliable sealing effect.

[0019] This invention incorporates a pressure relief valve. Specifically, when the sealing airbag is subjected to external impact or a sudden event that causes an abnormal increase in pressure, the pressure relief valve is triggered to automatically release pressure when the pressure exceeds a safe threshold, ensuring that the pressure remains stable within a safe range and preventing the sealing airbag from rupturing due to overpressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the sealing airbag structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the control box of this utility model; Figure 4 This is a schematic diagram of the airbag connection structure of this utility model; Figure 5 This is a schematic diagram of the structure of this utility model from a bottom view.

[0021] Explanation of key symbols: 1. Airbag; 2. Pressure sensor; 3. Pressure relief valve; 4. Exhaust pipe; 5. First solenoid valve; 6. Fixing pipe; 7. Second solenoid valve; 8. Exhaust assembly; 801. Connecting pipe; 802. Air pump; 803. Air outlet pipe; 804. Third solenoid valve; 9. Control box; 10. Inflation pump; 11. Microcontroller; 12. Relay module; 13. Control panel. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example: Please combine Figure 1-5This embodiment of an intelligent inflation and deflation structure for an adjustable pressure airbag includes a sealing airbag 1, a pressure sensor 2 fixedly connected to the front end of the sealing airbag 1, a pressure relief valve 3 fixedly installed at the front end of the sealing airbag 1, an exhaust pipe 4 connected to the front end of the sealing airbag 1, a first solenoid valve 5 fixedly installed on the inner wall of the exhaust pipe 4, a fixed pipe 6 connected to the front end of the sealing airbag 1, a second solenoid valve 7 fixedly installed on the inner wall of the fixed pipe 6, an exhaust assembly 8 provided at the front end of the sealing airbag 1, an inflation pump 10 fixedly connected to one end of the fixed pipe 6, a control box 9 fixedly connected to the bottom of the inflation pump 10, and a microcontroller 11 and a relay module 12 provided inside the control box 9. The exhaust assembly 8 includes a connecting pipe 801, one end of which is fixedly connected to a vacuum pump 802. The end of the vacuum pump 802 away from the connecting pipe 801 is connected to an exhaust pipe 803. A third solenoid valve 804 is fixedly installed on the inner wall of the connecting pipe 801. The target pressure value for blocking the airbag 1 is preset via the control panel 13. Before use, the first solenoid valve 5, the second solenoid valve 7, and the third solenoid valve 804 are all in the closed state. During use, the vacuum pump 10 and the second solenoid valve 7 are activated, and the airbag 10 and the second solenoid valve 804 are used to inflate the airbag 1. The fixed pipe 6 inflates the sealing airbag 1, causing it to expand and seal the pipeline. After construction, when venting is required, the first solenoid valve 5 is opened, and the gas inside the sealing airbag 1 is discharged through the vent pipe 4, thus achieving venting. The vacuum pump 802 and the third solenoid valve 804 are opened, and the gas inside the sealing airbag 1 is extracted through the vacuum pump 802 and the connecting pipe 801. The gas is then discharged outward through the vent pipe 803, causing the sealing airbag 1 to contract rapidly, improving venting efficiency and shortening the construction completion time.

[0024] The end of the connecting pipe 801 away from the air pump 802 is connected to the sealing airbag 1.

[0025] The bottom of the air pump 802 is fixedly connected to the bottom of the inner wall of the control box 9.

[0026] The end of the air outlet pipe 803 away from the air pump 802 extends to the outside of the control box 9.

[0027] The detection end of the pressure sensor 2 extends into the interior of the sealing airbag 1, and the pressure inside the sealing airbag 1 is monitored in real time by the pressure sensor 2.

[0028] A control panel 13 is fixedly connected to the top of the control box 9.

[0029] Pressure sensor 2, first solenoid valve 5, second solenoid valve 7, and third solenoid valve 804 are electrically connected to microcontroller 11 and relay module 12 via wires. Pressure sensor 2 transmits the detected real-time pressure signal to microcontroller 11. If the current pressure is lower than the preset value, microcontroller 11 outputs a control signal through relay module 12 to control the second solenoid valve 7 and inflation pump 10 to open. Gas enters the interior of the sealing airbag 1 through fixed tube 6 to achieve inflation. When pressure sensor 2 detects that the pressure inside the airbag reaches the target value, microcontroller 11 closes inflation pump 10 and second solenoid valve 7 through relay module 12, and the inflation process stops. If the pressure is lower than the lower limit of the target value due to slight leakage of the airbag, microcontroller 11 repeats the inflation process, replenishing the pressure to the target value through inflation pump 10 and second solenoid valve 7 to ensure continuous and reliable sealing effect.

[0030] The implementation principle of the intelligent inflation / deflation structure of the adjustable pressure airbag in this embodiment is as follows: When in use, the device is powered on, and the target pressure value of the sealing airbag 1 is preset via the control panel 13. Before use, the first solenoid valve 5, the second solenoid valve 7, and the third solenoid valve 804 are all in the closed state. During use, the inflation pump 10 and the second solenoid valve 7 are activated, and air is injected into the sealing airbag 1 through the inflation pump 10 and the fixed pipe 6, causing the sealing airbag 1 to expand and seal the pipe. After inflation is complete, the inflation pump 10 and the second solenoid valve 7 are closed. The pressure sensor 2 monitors the pressure inside the sealing airbag 1 in real time and transmits the detected real-time pressure signal to the microcontroller 11. If the current pressure is lower than the preset value, the microcontroller 11 outputs a control signal through the relay module 12 to control the second solenoid valve 7 and the inflation pump 10 to open, allowing gas to enter the sealing airbag 1 through the fixed pipe 6, thus achieving inflation. When the pressure sensor 2 detects that the pressure inside the airbag has reached the target value... The microcontroller 11 shuts off the air pump 10 and the second solenoid valve 7 via the relay module 12, stopping the inflation process. If the pressure drops below the target value due to slight leakage of the airbag, the microcontroller 11 repeats the inflation process, replenishing the pressure to the target value through the air pump 10 and the second solenoid valve 7 to ensure a continuous and reliable sealing effect. When the sealing airbag 1 is subjected to external impact or a sudden event that causes the pressure of the sealing airbag 1 to rise abnormally, and the pressure exceeds the safety threshold, the pressure relief valve 3 triggers automatic pressure relief to ensure that the pressure is stable within a safe range and to prevent the sealing airbag 1 from rupturing due to overpressure. After construction is completed, when it is necessary to vent, the first solenoid valve 5 is opened, and the gas inside the sealing airbag 1 is discharged through the exhaust pipe 4 to achieve venting. The suction pump 802 and the third solenoid valve 804 are opened, and the gas inside the sealing airbag 1 is extracted through the suction pump 802 and the connecting pipe 801, and the gas is discharged outward through the exhaust pipe 803, causing the sealing airbag 1 to contract quickly, improving the venting efficiency and shortening the construction completion time.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An intelligent inflation / deflation structure for an adjustable pressure airbag, characterized in that, The device includes a suffocating airbag (1), a pressure sensor (2) fixedly connected to the front end of the suffocating airbag (1), a pressure relief valve (3) fixedly installed at the front end of the suffocating airbag (1), an exhaust pipe (4) connected to the front end of the suffocating airbag (1), a first solenoid valve (5) fixedly installed on the inner wall of the exhaust pipe (4), a fixed pipe (6) connected to the front end of the suffocating airbag (1), a second solenoid valve (7) fixedly installed on the inner wall of the fixed pipe (6), an exhaust assembly (8) provided at the front end of the suffocating airbag (1), an air pump (10) fixedly connected to one end of the fixed pipe (6), a control box (9) fixedly connected to the bottom of the air pump (10), and a microcontroller (11) and a relay module (12) provided inside the control box (9). The exhaust assembly (8) includes a connecting pipe (801), one end of which is fixedly connected to a vacuum pump (802), and the end of the vacuum pump (802) away from the connecting pipe (801) is connected to an exhaust pipe (803). A third solenoid valve (804) is fixedly installed on the inner wall of the connecting pipe (801).

2. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 1, characterized in that: The end of the connecting pipe (801) away from the air pump (802) is connected to the sealing airbag (1).

3. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 2, characterized in that: The bottom of the air pump (802) is fixedly connected to the bottom of the inner wall of the control box (9).

4. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 1, characterized in that: The end of the air outlet pipe (803) away from the air pump (802) extends to the outside of the control box (9).

5. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 1, characterized in that: The detection end of the pressure sensor (2) extends into the interior of the sealing airbag (1).

6. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 4, characterized in that: The control box (9) is fixedly connected to the top of the control panel (13).

7. The intelligent inflation / deflation structure of an adjustable pressure airbag as described in claim 1, characterized in that: The pressure sensor (2), the first solenoid valve (5), the second solenoid valve (7) and the third solenoid valve (804) are electrically connected to the microcontroller (11) and the relay module (12) via wires.

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