Air bag switching device

Abstract

The utility model discloses an air bag switching device which comprises a switching module, a gas mixing block and a plurality of electromagnetic valves, the gas mixing block is provided with a gas outlet channel and a plurality of gas inlet channels which are communicated with each other, the gas outlet channel is communicated to downstream equipment, and the gas inlet channels are used for introducing a specific gas source and are communicated with the electromagnetic valves in a one-to-one correspondence mode; the control panel is used for controlling opening and closing of the electromagnetic valve. According to the utility model, the gas outlet channel and the gas inlet channel in the gas mixing block are optimally designed, and the arrangement mode of the electromagnetic valves is improved, so that the volume of a gas cavity and the volume of a dead cavity in the gas mixing block can be obviously reduced, and the deviation of a measurement system is reduced, thereby effectively ensuring the accuracy and the stability during continuous measurement of high-concentration gas and low-concentration gas; and the accuracy of gas component analysis is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic control and medical device technology, specifically to an air bag switching device. Background Technology

[0002] The air bag switching device is an important component of pneumatic control systems and is widely used in fields such as medical equipment. This device is mainly used to control and manage the deflation process of air bags under different conditions. Its main technologies include: (1) valve control: controlling the deflation of the air bag through a solenoid valve to achieve rapid switching; (2) sensor feedback: using pressure sensors and other sensors to monitor the air bag status in real time to ensure the accuracy and stability of the system; (3) control algorithm: using intelligent control algorithms such as PID control and fuzzy control to precisely adjust the deflation of the air bag; (4) communication and interface: supporting communication interfaces with other systems, such as Ethernet, to achieve remote monitoring and control. Through the above technologies, the air bag switching device can provide efficient and reliable pneumatic control in complex environments and is widely used in various equipment that require precise air pressure control.

[0003] Existing gas bag switching devices, when continuously measuring high-concentration and low-concentration gases, suffer from limitations imposed by dead spaces in their structure, leading to inflated test values ​​and difficulty in maintaining high accuracy and stability. Furthermore, they also suffer from drawbacks such as complex structure, difficulty in troubleshooting, and high maintenance costs. Utility Model Content

[0004] In order to reduce the volume of the air chamber and maintain high accuracy and stability of the measurement, this utility model provides an air bag switching device.

[0005] The technical solution adopted by this utility model is as follows: a gas bag switching device, comprising: a switching module, including a gas mixing block and several solenoid valves, the gas mixing block having an outlet channel and several inlet channels that are interconnected, the outlet channel being connected to downstream equipment, the inlet channel being used to introduce a specific gas source and being connected to the solenoid valves one by one; and a control board for controlling the opening and closing of the solenoid valves.

[0006] Preferably, the air outlet channel and the air inlet channel are perpendicular to each other in opposite planes and are connected by a transition channel.

[0007] Preferably, the air intake channel extends through the gas mixing block, with an air intake port at each end for connecting and installing the solenoid valve.

[0008] Preferably, several of the air intake channels are symmetrically arranged on both sides of the air outlet channel.

[0009] Preferably, it also includes a main processing board for real-time monitoring and data processing of gas flow, pressure and temperature.

[0010] Preferably, it also includes: a display screen that provides a user interface for displaying the current status, sampling parameters, real-time data, and fault information.

[0011] Preferably, it also includes: an outer shell, an external protective structure, providing structural support and protection.

[0012] This utility model has the following beneficial effects:

[0013] 1. Improved measurement accuracy: By optimizing the design of the gas outlet and inlet channels in the gas mixing block and improving the arrangement of the solenoid valves, the volume of the gas chamber and the dead space inside the gas mixing block can be significantly reduced, reducing the deviation of the measurement system. This effectively ensures the accuracy and stability of continuous measurement of high-concentration and low-concentration gases, and improves the accuracy of gas composition analysis.

[0014] 2. Simplified structure and improved maintainability: The modular design, which forms several modular components based on the outer shell, makes the structure simpler, reduces unnecessary parts, lowers the probability of failure, and facilitates quick replacement and maintenance of each modular component in the future. Attached Figure Description

[0015] Figure 1 This is an installation diagram of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the switching module in an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram (cut in half) of the gas mixing block in an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the installation of the outer shell in an embodiment of this utility model.

[0019] Switching module 1, gas mixing block 101, solenoid valve 102, gas outlet channel 103, gas inlet channel 104, transition channel 105;

[0020] Control panel 2;

[0021] Main processing board 3;

[0022] Display screen 4, back panel 401, front panel 402;

[0023] Outer shell 5, front shell 501, rear shell 502, main shell 503, front frame 504, rear frame 505;

[0024] Temperature sensor 6. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0026] In the embodiments, such as Figures 1-4 The diagram shows a gas bag switching device, comprising: a switching module 1, including a gas mixing block 101 and several solenoid valves 102; the gas mixing block 101 having interconnected outlet channels 103 and several inlet channels 104; the outlet channels 103 connecting to downstream equipment, and the inlet channels 104 for introducing specific gas sources and correspondingly connecting to the solenoid valves 102; and a control board 2 for controlling the opening and closing of the solenoid valves 102. Specifically, as shown... Figure 2 , Figure 3 As shown, the centerlines of the exhaust channel 103 and the intake channel 104 are perpendicular to each other and connected by a transition channel 105. The intake channel 104 penetrates the gas mixing block 101, forming an intake port at each end for connecting and installing solenoid valves 102. Furthermore, several intake channels 104 are symmetrically arranged on both sides of the exhaust channel 103. This embodiment, through the optimized design of the exhaust channel 103 and intake channel 104 in the gas mixing block 101, modifies the arrangement of several solenoid valves 102 into a head-to-head configuration. This significantly reduces the volume of the gas chamber inside the gas mixing block 101 (reduced by 50%) and the volume of the dead space (reduced by 60%), lowering the deviation of the measurement system. This effectively ensures the accuracy and stability of continuous measurement of high-concentration and low-concentration gases, improving the accuracy of gas composition analysis. This structure also makes the solenoid valves 102 more densely arranged, the overall structure of the switching module 1 more compact, and the overall size and weight of the device smaller.

[0027] In the embodiments, such as Figure 1 , Figure 4 As shown, it also includes: a main processing board 3, used for real-time monitoring and data processing of gas flow, pressure, and temperature; a display screen 4, providing a user interface for displaying current status, sampling parameters, real-time data, and fault information; and an outer casing 5, an external protective structure composed of a front casing 501, a rear casing 502, a main casing 503, a front frame 504, and a rear frame 505, providing structural support and protection. In this embodiment, the outer casing 5 forms several modular components. Specifically, the front casing 501, front frame 504, display screen 4, and switch form one module; the rear casing 502, rear frame 505, pagoda connector, and temperature sensor 6 form another module; and a gas mixing block 101 and several solenoid valves 102 switching modules 1 are also included. This modular design makes the structure simpler, reduces unnecessary parts, lowers the probability of failure, and facilitates quick replacement and maintenance of each module component later.

[0028] Obviously, the above embodiments of this utility model are merely examples for illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Other obvious variations or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. An airbag switching device, characterized in that, include: The switching module (1) includes a gas mixing block (101) and several solenoid valves (102). The gas mixing block (101) has an outlet channel (103) and several inlet channels (104) that are interconnected. The outlet channel (103) is connected to the downstream equipment, and the inlet channel (104) is used to introduce a specific gas source and is connected to the solenoid valves (102) one by one. The control panel (2) is used to control the opening and closing of the solenoid valve (102); The exhaust channel (103) and the intake channel (104) are perpendicular to each other and connected by a transition channel (105).

2. The airbag switching device according to claim 1, characterized in that, The air intake channel (104) passes through the gas mixing block (101) and forms an air intake port at each end for connecting and installing the solenoid valve (102).

3. The airbag switching device according to claim 1, characterized in that, Several of the air intake channels (104) are symmetrically arranged on both sides of the air outlet channel (103).

4. The airbag switching device according to claim 1, characterized in that, Also includes: The main processing board (3) is used for real-time monitoring and data processing of gas flow, pressure and temperature.

5. The airbag switching device according to claim 1, characterized in that, Also includes: The display screen (4) provides a user interface for displaying the current status, sampling parameters, real-time data and fault information.

6. The airbag switching device according to claim 1, characterized in that, Also includes: The outer shell (5) is an external protective structure that provides structural support and protection.

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