Inflation device suitable for single-hole air chamber

Abstract

The utility model provides an inflation device suitable for a single-hole air chamber, and relates to the technical field of gas detection, the single-hole air chamber is provided with an inflation and deflation port, the inflation device comprises: a standard gas cylinder suitable for providing standard gas; the discharging module is suitable for discharging gas in the single-hole gas chamber; the switching mechanism comprises a first port which is communicated with the discharging module; the second port is communicated with the standard gas cylinder; the third port is communicated with the inflation and deflation port, and emptying of the single-hole air chamber is achieved by controlling the first port of the switching mechanism to be communicated with the third port; the second port and the third port of the switching mechanism are controlled to be communicated, so that the standard gas cylinder inflates the single-hole gas chamber.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas detection, more particularly to a kind of inflation device suitable for single-hole gas chamber. BACKGROUND

[0002] Utilize light absorption method to detect gas, utilize light source to irradiate the sealed gas chamber for storing gas, need a kind of inflation device to store the gas to be detected into the sealed gas chamber.

[0003] In the related art, the sealed gas chamber is provided with two gas nozzles to realize the storage of the gas to be detected and the extraction of the gas in the sealed gas chamber, so as to fill the sealed gas chamber with the required gas to be detected.

[0004] However, the above-mentioned sealed gas chamber is provided with two gas nozzles, which makes the volume of the sealed gas chamber and the inflation device larger, and is not convenient to use. In addition, the two gas nozzles are prone to gas leakage, and the production cost is high, which affects the yield of the sealed gas chamber to some extent. SUMMARY

[0005] Therefore, the utility model provides an inflation device suitable for single-hole gas chamber, which solves the problem of large volume and easy gas leakage of the existing inflation device.

[0006] One aspect of the utility model provides an inflation device suitable for single-hole gas chamber, the single-hole gas chamber is provided with one inflation and deflation port, and the inflation device comprises: a standard gas cylinder suitable for providing standard gas; a discharge module suitable for discharging the gas in the single-hole gas chamber; a switching mechanism comprising: a first port in communication with the discharge module; a second port in communication with the standard gas cylinder; and a third port in communication with the inflation and deflation port, wherein the first port and the third port of the switching mechanism are controlled to communicate to realize the emptying of the single-hole gas chamber; and the second port and the third port of the switching mechanism are controlled to communicate to realize the inflation of the single-hole gas chamber by the standard gas cylinder.

[0007] According to the embodiment of the utility model, the above-mentioned inflation device flow regulating module is connected between the second port and the standard gas cylinder, and is suitable for adjusting the flow of the standard gas of the standard gas cylinder.

[0008] According to the embodiment of the utility model, the flow regulating module comprises: a flow meter connected between the second port and the standard gas cylinder, suitable for detecting the flow of the standard gas flowing out of the standard gas cylinder; a pressure regulating valve installed between the second port and the standard gas cylinder; and a first waste outlet in communication with the flow meter, suitable for releasing the gas when the flow meter detects that the gas flow exceeds the preset flow; wherein, before the standard gas cylinder inflates the single-hole gas chamber, the first port and the second port are controlled to communicate, so as to determine the flow of the standard gas based on the flow of the standard gas flowing out of the standard gas cylinder detected by the flow meter by operating the pressure regulating valve.

[0009] According to the embodiment of the utility model, the flow regulating module further comprises: a three-way joint, comprising: a fourth port, in communication with the standard gas cylinder; a fifth port, in communication with the flow meter; and a sixth port, in communication with the second port.

[0010] According to the embodiment of the utility model, the exhaust module comprises: an air extraction pump, in communication with the first port, suitable for extracting the gas in the single-hole air chamber and realizing the emptying of the single-hole air chamber; and a two-way electromagnetic valve, comprising: a seventh port, in communication with the first port; an eighth port, in communication with the air extraction pump; and a second waste outlet, in communication with the air extraction pump, suitable for discharging the gas in the single-hole air chamber extracted by the air extraction pump.

[0011] According to the embodiment of the utility model, the above-mentioned inflation device further comprises a shell, the air extraction pump is installed in the shell; the switching mechanism is arranged outside the shell, the first port is in communication with the air extraction pump in the shell through a first pipeline, and the second port is in communication with the sixth port; the flow meter is installed on a first wall surface of the shell, and the fifth port of the three-way joint is in communication with the flow meter through a second pipeline.

[0012] According to the embodiment of the utility model, the first waste outlet and the second waste outlet are installed on a second wall surface of the shell opposite to the first wall surface.

[0013] According to the embodiment of the utility model, the above-mentioned inflation device further comprises: a pressure gauge, installed on the first wall surface and in communication with the first pipeline, to detect the air pressure in the single-hole air chamber; wherein, during the exhaust, the first port is controlled to be in communication with the third port, the seventh port is controlled to be in communication with the eighth port, the air extraction pump is controlled to work, and when the pressure gauge reaches a preset first pressure value, the seventh port is controlled to be disconnected from the eighth port, the air extraction pump is controlled to stop working, to stop the exhaust; during the flow regulation, the first port is controlled to be in communication with the second port, the seventh port is controlled to be in communication with the eighth port, and when the flow meter reaches a preset flow, the opening degree of the pressure regulating valve is kept unchanged, the seventh port is controlled to be disconnected from the eighth port; and during the inflation, the second port is controlled to be in communication with the third port, and when the pressure gauge reaches a preset second pressure value, the inflation is stopped.

[0014] According to the embodiment of the utility model, the two-way electromagnetic valve is arranged on the first wall surface of the shell.

[0015] According to the embodiment of the utility model, the above-mentioned inflation device further comprises: a connecting interface, the first pipeline and the second pipeline pass through the connecting interface to enter the inside of the shell.

[0016] According to the embodiment of the utility model, switching mechanism includes with the first port of discharging module intercommunication, with the second port of standard gas cylinder intercommunication, with the third port of filling and discharging port intercommunication, wherein, through control switching mechanism's first port and third port intercommunication, realize the emptying of single -hole gas chamber, through control switching mechanism's second port and third port intercommunication, realize standard gas cylinder to single -hole gas chamber fills gas. Since utilize switching mechanism realizes the intercommunication control of each component, makes single -hole gas chamber through one gas nozzle realizes the filling and discharging of gas, avoided the problem that current inflating device volume is too big and is easy to leak, realized the effect that improves single -hole gas chamber's yield. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 A structural block diagram of the inflating device of the embodiment of the utility model is schematically shown;

[0019] Figure 2 A schematic view of the inflating device of the embodiment of the utility model is schematically shown; and

[0020] Figure 3 A perspective view of the inflating device of the embodiment of the utility model is schematically shown. DETAILED DESCRIPTION

[0021] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. However, it is to be understood that the following description is merely illustrative of the present application and in no way limits the scope of the present application. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that one or more embodiments of the present application can be practiced without these specific details. In other instances, well-known structures and methods are not described in detail in order to avoid obscuring the intent and concept of the present application.

[0022] The terms used herein are merely used to describe specific embodiments and are not intended to limit the present application. The terms "include", "comprise" and the like as used herein indicate the presence of the described features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0023] All terms used herein (including technical and scientific terms) have the meanings commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted in a manner consistent with the context of the specification, and should not be interpreted in an idealized or overly formal manner.

[0024] In the case of using expressions like "at least one of A, B, and C", it will be understood that such phrases are meant to encompass the options for "A only," "B only," "C only," "A and B," "A and C," "B and C," or "A and B and C," as well as any other of the various possible combinations.

[0025] In the related art, the inflating device inflates the air chamber provided with two air nozzles, and the air chamber is inflated and deflated by using the two air nozzles, so that the inflating device and the air chamber are large in size, and air leakage is prone to occur.

[0026] Therefore, one aspect of the present application provides an inflating device suitable for a single-hole air chamber, the single-hole air chamber being provided with one gas charging and discharging port, the inflating device comprising: a standard gas cylinder for providing standard gas; a discharging module for discharging gas in the single-hole air chamber; and a switching mechanism comprising: a first port in communication with the discharging module; a second port in communication with the standard gas cylinder; and a third port in communication with the gas charging and discharging port, wherein the single-hole air chamber is emptied by controlling the first port and the third port of the switching mechanism to be in communication, and the single-hole air chamber is inflated by the standard gas cylinder by controlling the second port and the third port of the switching mechanism to be in communication.

[0027] Figure 1 The structure block diagram of the inflating device is schematically shown.

[0028] One aspect of the present application provides an inflating device suitable for a single-hole air chamber, the single-hole air chamber being provided with one gas charging and discharging port, the inflating device comprising: a standard gas cylinder 100, a switching mechanism 200, and a discharging module 300.

[0029] According to the embodiment of the present application, the standard gas cylinder 100 is suitable for providing standard gas; the discharging module 300 is suitable for discharging gas in the single-hole air chamber; and the switching mechanism 200 comprises: a first port P1 in communication with the discharging module 300; a second port P2 in communication with the standard gas cylinder 100; and a third port P3 in communication with the gas charging and discharging port, wherein the single-hole air chamber is emptied by controlling the first port P1 and the third port P3 of the switching mechanism 200 to be in communication, and the single-hole air chamber is inflated by the standard gas cylinder by controlling the second port P2 and the third port P3 of the switching mechanism to be in communication.

[0030] According to the embodiment of the present application, the standard gas cylinder 100 can be a bottle-type metal or non-metal closed container, which is generally a mobile pressure container for storing and transporting gas, and often stores and transports permanent gas, liquefied gas, dissolved gas, or adsorbed gas.

[0031] According to the embodiment of the utility model, the standard gas is various, including pure gas, mixed gas and dilution gas. The pure gas refers to the gas containing only one gas component, such as oxygen, nitrogen and hydrogen. The mixed gas refers to the gas containing two or more gas components, such as the mixed gas of carbon dioxide and oxygen. The dilution gas refers to the gas added to other gas.

[0032] According to the embodiment of the utility model, the discharge module 300 can be a suction assembly to realize the suction of the single-hole air chamber, so that the single-hole air chamber is emptied.

[0033] According to the embodiment of the utility model, the switching mechanism 200 can be a three-way electromagnetic valve composed of an electromagnet, a valve body, a valve core and a spring. During operation, the three-way electromagnetic valve controls the movement of the valve core by using electromagnetic force, so as to change the passage of the fluid medium, thereby switching the filling and discharging passage of the single-hole air chamber.

[0034] According to the embodiment of the utility model, by controlling the communication between the first port P1 and the third port P3 of the switching mechanism 200, the discharge module 300 is communicated with the single-hole air chamber, and the gas in the single-hole air chamber is extracted by using the discharge module 300, so as to realize the negative pressure state of the single-hole air chamber.

[0035] According to the embodiment of the utility model, by controlling the communication between the second port P2 and the third port P3 of the switching mechanism, the standard gas bottle 100 is communicated with the single-hole air chamber, so as to fill the standard gas in the standard gas bottle 100 into the single-hole air chamber.

[0036] According to the embodiment of the utility model, the switching mechanism 200 includes the first port P1 communicated with the discharge module 300, the second port P2 communicated with the standard gas bottle 100, and the third port P3 communicated with the filling and discharging port. By controlling the communication between the first port P1 and the third port P3 of the switching mechanism 200, the single-hole air chamber is emptied. By controlling the communication between the second port P2 and the third port P3 of the switching mechanism 200, the standard gas bottle 100 fills the gas into the single-hole air chamber. Since the switching mechanism 200 is used to control the communication of each component, the single-hole air chamber realizes the filling and discharging of the gas through one gas nozzle, avoiding the problem that the existing gas filling device is too large and easy to leak, and realizing the effect of improving the yield of the single-hole air chamber.

[0037] According to the embodiment of the utility model, the above-mentioned gas filling device further includes a flow regulating module connected between the second port P2 and the standard gas bottle 100, which is suitable for adjusting the flow of the standard gas of the standard gas bottle 100.

[0038] According to the embodiment of the utility model, the flow regulating module is used for regulating the flow of the standard gas flowing out of the standard gas cylinder 100, so as to ensure efficient inflation of the single-hole gas chamber while avoiding excessive flow of the standard gas leading to rapid pressure rise, thereby avoiding the risk of damage to the inflation device.

[0039] Figure 2 The utility model discloses an inflation device. Figure 3 The utility model discloses an inflation device.

[0040] According to the embodiment of the utility model, the flow regulating module comprises a flow meter 410, a pressure regulating valve 420 and a first waste outlet 430.

[0041] According to the embodiment of the utility model, the flow meter 410 is connected between the second port P2 and the standard gas cylinder 100 and is suitable for detecting the flow of the standard gas flowing out of the standard gas cylinder 100; the pressure regulating valve 420 is installed between the second port P2 and the standard gas cylinder 100; the first waste outlet 430 is communicated with the flow meter 410 and is suitable for releasing the gas when the flow meter 410 detects that the gas flow exceeds the preset flow; wherein, before the standard gas cylinder 100 inflates the single-hole gas chamber, the first port P1 is controlled to be communicated with the second port P2, so as to determine the flow of the standard gas by operating the pressure regulating valve 420 based on the flow of the standard gas flowing out of the standard gas cylinder 100 detected by the flow meter 410.

[0042] According to the embodiment of the utility model, the flow meter 410 can be a float flow meter, and the float flow meter vertically places a float in a vertical cone pipe, and when the standard gas flows, the float rises to a balance position, and the height of the balance position corresponds to the flow of the standard gas.

[0043] According to the embodiment of the utility model, the pressure regulating valve 420 is installed between the second port P2 and the standard gas cylinder 100 and can be installed at the gas outlet of the standard gas cylinder 100 to regulate the flow of the standard gas flowing out of the standard gas cylinder 100.

[0044] According to the embodiment of the utility model, the first waste outlet 430 is used for releasing the standard gas to avoid excessive standard gas in the channel, so that the inflation device is not damaged due to excessive pressure.

[0045] According to the embodiment of the utility model, before the standard gas cylinder 100 fills the single-hole gas chamber with gas, the first port P1 and the second port P2 are controlled to be in communication, the flow meter 410 is observed, and the flow of the standard gas is adjusted by using the pressure regulating valve 420 to reach a preset flow, preferably 2L / min, wherein, in the adjustment process, if the flow meter 410 detects that the gas flow exceeds the preset flow, that is, the gas flow in the current channel is too large, there is a risk of damaging the gas filling device, the standard gas is released by using the first waste outlet 430 to slow down the flow of the standard gas in the current channel and reduce the gas pressure.

[0046] According to the embodiment of the utility model, the flow regulating module further comprises a tee joint 440, which comprises: a fourth port P4 in communication with the standard gas cylinder 100; a fifth port P5 in communication with the flow meter 410; and a sixth port P6 in communication with the second port P2.

[0047] According to the embodiment of the utility model, the tee joint 440 is used to mount the flow regulating module between the second port P2 and the standard gas cylinder 100.

[0048] According to the embodiment of the utility model, the discharge module 300 comprises a gas suction pump 310, a two-way electromagnetic valve 320, and a second waste outlet 330.

[0049] According to the embodiment of the utility model, the gas suction pump 310 is in communication with the first port P1 and is suitable for sucking the gas in the single-hole gas chamber to achieve emptying of the single-hole gas chamber; the two-way electromagnetic valve 320 comprises: a seventh port P7 in communication with the first port P1; an eighth port P8 in communication with the gas suction pump 310; and the second waste outlet 330 is in communication with the gas suction pump 310 and is suitable for discharging the gas in the single-hole gas chamber sucked by the gas suction pump 310.

[0050] According to the embodiment of the utility model, the gas suction pump 310 can pump fluid by reciprocating movement of an elastic diaphragm, such as a diaphragm pump, wherein the main components of the gas suction pump 310 comprise a pump head and an elastic diaphragm.

[0051] According to the embodiment of the utility model, the two-way electromagnetic valve 320 is used to control the on-off of the gas, the two-way electromagnetic valve 320 is composed of an electromagnetic coil and a valve body, the opening and closing of the valve body are controlled by energization and de-energization of the electromagnetic coil, thereby realizing control of the gas flow.

[0052] According to the embodiment of the utility model, the second waste outlet 330 is used to discharge the gas sucked by the gas suction pump 310.

[0053] According to the embodiment of the utility model, the above-mentioned inflation device further comprises a shell, the air pump 310 is installed in the shell, the switching mechanism 200 is arranged outside the shell, the first port P1 is communicated with the air pump 310 in the shell through the first pipeline, the second port P2 is communicated with the sixth port P6, the flowmeter 410 is installed on the first wall surface of the shell, the fifth port P5 of the three-way joint 440 is communicated with the flowmeter 410 through the second pipeline.

[0054] According to the embodiment of the utility model, the first waste outlet 430 and the second waste outlet 330 are installed on the second wall surface of the shell opposite to the first wall surface.

[0055] According to the embodiment of the utility model, since the air pump 310 and part of the first pipeline and the second pipeline are installed in the shell, the inflation device is easy to carry and operate.

[0056] According to the embodiment of the utility model, since the switching mechanism 200 is arranged outside the shell, the inflation cylinder 100 and the single-hole air chamber are easy to operate outside the shell through the first pipeline and the second pipeline.

[0057] According to the embodiment of the utility model, since the inflation device is provided with the shell, part of the complex and not easy to carry components are regularized, so that the inflation device is easy to operate, and the inflation efficiency is improved.

[0058] According to the embodiment of the utility model, the above-mentioned inflation device further comprises a pressure gauge 500, the pressure gauge 500 is installed on the first wall surface and communicated with the first pipeline to detect the air pressure in the single-hole air chamber, wherein during the exhaust, the first port P1 is communicated with the third port P3, the seventh port P7 is communicated with the eighth port P8, the air pump 310 works, and when the pressure gauge 500 reaches the preset first pressure value, the seventh port P7 is disconnected with the eighth port P8, the air pump 310 stops working to stop the exhaust, during the flow adjustment, the first port P1 is communicated with the second port P2, the seventh port P7 is communicated with the eighth port P8, and when the flowmeter 410 reaches the preset flow, the opening degree of the pressure regulating valve 420 is kept unchanged, the seventh port P7 is communicated with the eighth port P8, during the inflation, the second port P2 is communicated with the third port P3, and when the pressure gauge 500 reaches the preset second pressure value, the inflation is stopped.

[0059] According to the embodiment of the utility model, during the exhaust, the first port P1 is communicated with the third port P3, the seventh port P7 is communicated with the eighth port P8, the air pump 310 extracts the gas in the single-hole air chamber until the pressure gauge 500 reaches the preset first pressure value, that is, the single-hole air chamber is in a negative pressure state, preferably the pressure is less than-60kPa.

[0060] According to the embodiment of the utility model, after the air pump 310 stops working, the pressure gauge 500 is observed, if the pressure rising range of single hole air chamber in a period of time is not satisfied with the preset range, the single hole air chamber is good in sealing, for example, the pressure rising range of single hole air chamber is less than or equal to 1kPa in 5 minutes after the air pump 310 stops working, the sealing of the single hole air chamber is good, if the pressure rising range of single hole air chamber exceeds the preset range, the sealing of the single hole air chamber is unqualified, needs to be replaced.

[0061] According to the embodiment of the utility model, the first port P1 and the second port P2 are communicated, the seventh port P7 and the eighth port P8 are communicated, and when the flow meter reaches the preset flow, preferably 2L / min, the pressure regulating valve 420 ensures that the standard gas cylinder 100 outputs standard gas at the preset flow. During the inflation period, the second port P2 and the third port P3 are communicated, and when the pressure gauge 500 reaches the preset second pressure value, that is, the single hole air chamber is full of standard gas, the inflation is stopped.

[0062] According to the embodiment of the utility model, since the pressure gauge 500 is arranged, the state of the current single hole air chamber can be accurately controlled during the use of the inflation device, the operator can better inflate the single hole air chamber, the yield is improved, the cost consumption is reduced, and the inflation efficiency is improved.

[0063] According to the embodiment of the utility model, the two-way electromagnetic valve 320 is arranged on the first wall surface of the shell.

[0064] According to the embodiment of the utility model, the two-way electromagnetic valve 320 is arranged outside the shell, which is convenient for controlling operation when the single hole air chamber is pumped.

[0065] According to the embodiment of the utility model, the inflation device further comprises a connecting interface, and the first pipeline and the second pipeline pass through the connecting interface and enter the inside of the shell.

[0066] According to the embodiment of the utility model, the connecting interface can be a φ1 / 8 interface, and correspondingly, the first pipeline and the second pipeline can be φ1 / 8 pipelines, so as to realize the communication between the inside and the outside of the shell.

[0067] According to the embodiment of the utility model, the inflation device can further be provided with a backup connecting interface, such as a φ6 interface, so as to switch the connecting interface according to the actual needs of different models of the first pipeline and the second pipeline.

[0068] It is understood by those skilled in the art that the features recited in the various embodiments and / or claims of the present application can be combined or / and integrated in various combinations, even if such combinations are not explicitly recited in the present application. In particular, the features recited in the various embodiments and / or claims of the present application can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present application. All such combinations and / or integrations are within the scope of the present application.

[0069] The embodiments of the present application are described above. However, these embodiments are merely for illustrative purposes, and are not intended to limit the scope of the present application. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be advantageously used in combination. The scope of the present application is defined by the appended claims and their equivalents. Without departing from the scope of the present application, various alternatives and modifications can be made by those skilled in the art, and all such alternatives and modifications shall fall within the scope of the present application.

Claims

1. An inflation device suitable for a single-hole air chamber, wherein the single-hole air chamber is provided with an inflation and deflation port, characterized in that: The inflation device comprises: Standard gas cylinder, suitable for providing standard gas; an exhaust module, adapted to exhaust the gas in the single-hole air chamber; and Switching mechanism, including: a first port, communicating with the exhaust module; a second port, connected to the standard gas cylinder; and The third port is connected to the gas charging and discharging port. Among them, by controlling the first port and the third port of the switching mechanism to be connected, the single-hole air chamber is emptied; by controlling the second port and the third port of the switching mechanism to be connected, the standard gas cylinder is used to inflate the single-hole air chamber.

2. The inflator according to claim 1, wherein: It also includes a flow regulating module, which is connected between the second port and the standard gas cylinder and is suitable for regulating the flow of the standard gas in the standard gas cylinder.

3. The inflation device according to claim 2, characterized in that The flow regulation module includes: a flow meter connected between the second port and the standard gas cylinder, adapted to detect the flow rate of the standard gas flowing out of the standard gas cylinder; a pressure regulating valve installed between the second port and the standard gas cylinder; and a first waste outlet, connected to the flow meter, and adapted to release gas when the flow meter detects that the gas flow exceeds a preset flow rate; Before the standard gas cylinder inflates the single-hole gas chamber, the first port is controlled to be connected to the second port, so as to determine the flow rate of the standard gas by operating the pressure regulating valve based on the flow rate of the standard gas flowing out of the standard gas cylinder detected by the flowmeter.

4. The inflation device according to claim 3, characterized in that The flow regulation module also includes: Tee connector, including: a fourth port, connected to the standard gas cylinder; a fifth port communicating with the flow meter; and The sixth port is communicated with the second port.

5. The inflation device according to claim 4, characterized in that The emission module includes: an air pump, connected to the first port, adapted to extract the gas from the single-hole air chamber to empty the single-hole air chamber; Two-way solenoid valve, including: a seventh port, communicating with the first port; and an eighth port connected to the air pump; and The second waste outlet is connected to the air pump and is suitable for discharging the gas in the single-hole air chamber extracted by the air pump.

6. The inflation device according to claim 5, characterized in that The inflation device further comprises a housing, and the air pump is installed in the housing; The switching mechanism is arranged outside the housing, and the first port is communicated with the air extraction pump in the housing through a first pipeline, and the second port is communicated with the sixth port; The flow meter is mounted on the first wall of the housing, and the fifth port of the three-way connector is connected to the flow meter through a second pipeline.

7. The inflation device according to claim 6, characterized in that The first waste outlet and the second waste outlet are installed on a second wall surface of the housing opposite to the first wall surface.

8. The inflation device according to claim 6, characterized in that The inflation device further comprises: a pressure gauge, mounted on the first wall surface and connected to the first pipeline, to detect the air pressure in the single-hole air chamber; During the exhaust period, the first port is controlled to be connected to the third port, the seventh port is controlled to be connected to the eighth port, and the air extraction pump is operated. When the pressure gauge reaches a preset first pressure value, the seventh port is controlled to be disconnected from the eighth port, and the air extraction pump is stopped to stop exhausting. During flow regulation, the first port is controlled to be connected to the second port, and the seventh port is controlled to be connected to the eighth port; and when the flow meter reaches a preset flow, the opening of the pressure regulating valve is kept unchanged, and the seventh port is controlled to be disconnected from the eighth port; During inflation, the second port is controlled to communicate with the third port, and inflation is stopped when the pressure gauge reaches a preset second pressure value.

9. The inflation device according to claim 6, characterized in that The two-way solenoid valve is arranged on the first wall surface of the housing.

10. The inflation device according to claim 9, characterized in that The inflation device further comprises: A connecting interface, through which the first pipeline and the second pipeline pass into the interior of the shell.

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