Inflation door control system and inflation door

Abstract

The invention discloses an inflation door control system and an inflation door, and belongs to the technical field of inflation doors, the inflation door control system comprises a control unit, a display module and an air source supply module, the air outlet end of the air source supply module is connected with a check valve, and the air outlet end of a fine filter is provided with a main air path pipeline; a second electromagnetic valve, a pressure retaining valve and a pressure reducing valve are arranged in the main gas path pipeline in the gas flowing direction, a branch gas path is arranged at the gas outlet end of the pressure reducing valve, the gas outlet end of the branch gas path is connected with a branch gas inlet pipe, and the gas outlet end of the branch gas inlet pipe is connected with an inflation rubber strip. The branch air path is provided with a first electromagnetic valve and a first air pressure sensor. By arranging the reverse blowing system and the emergency system, reverse blowing of an air channel can be achieved, impurities, dust and the like accumulated in the air channel can be removed in time, the air channel is kept unblocked, and reliable sealing guarantee is provided when the air channel leaks.

Description

Technical Field

[0001] The invention relates to the technical field of inflation valves, and in particular to an inflation valve control system and an inflation valve. Background Art

[0002] In many modern fields, such as laboratories, clean workshops, storage facilities, and some special activity venues, inflatable doors are widely used due to their good sealing and quick assembly and disassembly. They can effectively isolate different environmental areas, prevent the mutual penetration of dust, pollutants, harmful gases, etc., or maintain specific internal environmental conditions such as pressure, temperature, humidity, etc. in specific scenarios.

[0003] The traditional inflation valve system has exposed many technical defects in the actual operation process, such as gas path blockage and gas path leakage. Gas path leakage is an important factor threatening the normal operation and sealing effect of the inflation valve. The pipe connection parts and valve seals in the gas path are prone to reduced sealing performance due to long-term use, vibration, temperature changes and other factors. Once the gas path leaks, it is difficult to maintain the internal air pressure of the inflation valve at a normal level, resulting in a significant reduction in its sealing performance and failure to effectively play an isolation role, which may have an adverse effect on the internal experimental environment, production process or stored items. For example, in the laboratory, it may lead to inaccurate experimental data and contamination of experimental samples; in the clean workshop, it may damage the cleanliness level and increase the defective rate of products; in the storage facilities, it may cause the stored items that are easily oxidized, damp or sensitive to the environment to deteriorate and damage.

[0004] In order to overcome the defects of traditional inflation valve systems in terms of air path reliability, emergency handling capabilities and inflation uniformity, an innovative inflation valve system design is urgently needed to meet the needs of modern fields for efficient, safe and stable operation of inflation valves. Summary of the invention

[0005] The object of the present invention is to provide an inflation valve control system to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A charging valve control system comprises a control unit, a display module and an air source supply module, wherein the air inlet end of the air source supply module is connected to a coarse filter, the air outlet end of the air source supply module is connected to a check valve, the air outlet end of the check valve is connected to a fine filter, the air outlet end of the fine filter is provided with a main air path pipeline, solenoid valve 2, a pressure maintaining valve and a pressure reducing valve are sequentially provided along the gas flow direction in the main air path pipeline, the air outlet end of the pressure reducing valve is provided with a branch air path, the air outlet end of the branch air path is connected to a branch air inlet pipe through a joint, the air outlet end of the branch air inlet pipe is connected to an inflation rubber strip, the branch air path is provided with a solenoid valve 1 and an air pressure sensor 1, and a back-blowing system and an emergency system are connected between the fine filter and the solenoid valve 2 through a four-way connection.

[0007] Preferably, the air source supply module includes two air pumps and a compressor, the air inlet ends of the air pump and the compressor are connected to a coarse filter through an air inlet pipe, and the air outlet ends of the air pump and the compressor are connected to a check valve through an air outlet pipe.

[0008] Preferably, a second air pressure sensor and an emergency switch are provided on the main air pipeline, and the second air pressure sensor and the emergency switch are arranged between the pressure maintaining valve and the pressure reducing valve.

[0009] Preferably, the emergency system includes an emergency pipeline, and an emergency solenoid valve and a high-pressure storage tank are sequentially arranged along the gas flow direction in the emergency pipeline, the air outlet end of the high-pressure storage tank is connected to an emergency branch, the air outlet end of the emergency branch is connected to a high-pressure airbag through a joint, and the high-pressure airbag is arranged around the outside of the inflatable rubber strip.

[0010] Preferably, a safety valve and a third air pressure sensor are installed on the high-pressure storage tank, and an emergency solenoid valve is provided on the emergency branch line.

[0011] Preferably, the back-blowing air system includes a back-blowing pipe, and a back-blowing solenoid valve 1 and a flow regulating valve are sequentially arranged along the gas flow direction in the back-blowing pipe, a diverter valve is installed at the air outlet end of the back-blowing pipe, and an air pressure sensor 4 is arranged between the diverter valve and the flow regulating valve. A back-blowing branch is installed at the air outlet end of the diverter valve, and a back-blowing solenoid valve 2 is arranged on the back-blowing branch. The air outlet end of the back-blowing branch is connected to the main air pipeline.

[0012] Preferably, the connection points between the back-blowing branch and the main gas pipeline are respectively located at the gas outlet end of the pressure reducing valve, the pressure reducing valve and the pressure relief valve, and between the pressure maintaining valve and the second solenoid valve.

[0013] An inflation valve comprises an inflation valve body and an inflation valve control system.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting up a back-blowing system and an emergency system, the gas line can be reversely purged, and impurities, dust and other foreign objects accumulated in the gas line can be removed in time to keep the gas line unobstructed, and provide reliable sealing protection when the gas line leaks; the gas pumped out by the gas source supply module first passes through the check valve to prevent gas backflow, and then the gas passes through the pressure maintaining valve to ensure stable air pressure, and is transmitted to the air pressure sensor 2 for monitoring to prevent excessive inflation. The current air pressure can be seen at all times, and the pressure reducing valve can be set to quickly release the pressure when the door is opened. By setting a coarse filter and a fine filter, the air in the gas line can be secondary filtered, thereby reducing the possibility of gas line blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall gas path of the present invention; Figure 2 It is a schematic diagram of the air path in the inflation valve body of the present invention.

[0016] In the figure: 1. Air pump; 2. Compressor; 3. Inlet pipe; 4. Coarse filter; 5. Outlet pipe; 6. Check valve; 7. Fine filter; 8. Main air pipeline; 9. Pressure-maintaining valve; 10. Pressure reducing valve; 11. Hinge; 12. Branch air circuit; 13. Solenoid valve 1; 14. Air pressure sensor 1; 15. Branch air intake pipe; 16. Inflatable rubber strip; 17. Pressure relief valve; 18. Air pressure sensor 2; 19. Emergency switch; 20. Backflush pipe; 21. Backflush solenoid valve 1; 22. Flow regulating valve; 23. Diverter valve; 24. Backflush branch; 25. Backflush solenoid valve 2; 26. Emergency pipe; 27. Emergency solenoid valve 1; 28. High-pressure storage tank; 29. ​​High-pressure airbag; 30. Inflatable door body; 31. Connector; 32. Emergency branch; 33. Emergency solenoid valve 2; 34. Air pressure sensor 3; 35. Safety valve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 2 , the present invention provides a technical solution: like Figure 1 and Figure 2As shown, an inflation valve control system includes a control unit, a display module and an air source supply module, the air inlet end of the air source supply module is connected to a coarse filter 4, the air outlet end of the air source supply module is connected to a check valve 6 to prevent gas backflow, the air outlet end of the check valve 6 is connected to a fine filter 7, by arranging the coarse filter 4 and the fine filter 7, the air in the air path can be filtered twice, so as to reduce the possibility of air path blockage, the air outlet end of the fine filter 7 is provided with a main air path pipeline 8, along the gas flow direction in the main air path pipeline 8, a solenoid valve 2, a pressure maintaining valve 9 and a pressure reducing valve 10 are sequentially arranged, the air outlet end of the pressure reducing valve 10 is provided with a branch air path 12, and the air outlet end of the branch air path 12 is connected to the air outlet end of the pressure reducing valve 10 through a joint 31 is connected to a branch air inlet pipe 15, and an air outlet end of the branch air inlet pipe 15 is connected to an inflatable rubber strip 16. The pressure-maintaining valve 9 can ensure stable air pressure, and the pressure-reducing valve 10 can quickly release pressure when the door is opened. A solenoid valve 13 and an air pressure sensor 14 are provided on the branch air path 12. A back-blowing system and an emergency system are connected between the fine filter 7 and the solenoid valve 2 through a four-way connection. Among them, the control unit is a programmable logic controller, which serves as the core control unit of the system. It receives sensor signals and accurately controls the air supply module, the back-blowing system and the emergency system according to preset programs and algorithms. The display module is connected to the control unit as a human-machine interface (HMI), and human-machine interaction is realized through a touch display screen.

[0019] Furthermore, the air source supply module includes two air pumps 1 and a compressor 2, the air inlet ends of the air pump 1 and the compressor 2 are connected to the coarse filter 4 through the air inlet pipe 3, and the air outlet ends of the air pump 1 and the compressor 2 are connected to the check valve 6 through the air outlet pipe 5, wherein the two air pumps 1 are built-in air pumps, and the compressor 2 is an external air source. By using the air pump 1 and the compressor 2 as the air source, it can be suitable for different usage environments. For example, the compressor 2 can be suitable for situations with a stable external air source. The air pump 1 can use a centrifugal air pump or a vortex air pump with stable flow and pressure output. The flow and pressure parameters of the air pump 1 should match the requirements of the inflation valve body 30, and it is equipped with a variable frequency speed regulation device, which can accurately adjust the rotation speed according to the instructions of the control unit, thereby controlling the inflation speed.

[0020] Furthermore, an air pressure sensor 18 and an emergency switch 19 are provided on the main air pipeline 8. The air pressure sensor 18 and the emergency switch 19 are arranged between the pressure maintaining valve 9 and the pressure reducing valve 10. The air pressure sensor 18 can monitor the air pressure in the main air pipeline 8 to prevent excessive inflation, and the emergency switch 19 can respond to emergencies to ensure safety.

[0021] Furthermore, the emergency system includes an emergency pipeline 26, along the gas flow direction of the emergency pipeline 26, an emergency solenoid valve 27 and a high-pressure storage tank 28 are sequentially arranged, the air outlet end of the high-pressure storage tank 28 is connected to an emergency branch 32, the air outlet end of the emergency branch 32 is connected to a high-pressure airbag 29 through a joint 31, the high-pressure airbag 29 is arranged around the outside of the inflatable rubber strip 16, wherein the high-pressure airbag 29 is made of high-strength, high-pressure resistant rubber material, and has good sealing performance and elasticity. When in use, a certain pressure of gas is filled into the high-pressure airbag 29 through the high-pressure storage tank 28. In actual use, a one-way valve can also be installed between the high-pressure storage tank 28 and the high-pressure airbag 29 to keep the gas pressure in the high-pressure airbag 29 stable. The high-pressure storage tank 28 is used to provide a backup gas source for the high-pressure airbag 29. The pressure of the high-pressure storage tank 28 can be set according to the working pressure of the high-pressure airbag 29 and the sealing requirements of the inflation valve, and the range is 8-12kPa.

[0022] A safety valve 35 and an air pressure sensor 34 are installed on the high-pressure storage tank 28, and an emergency solenoid valve 2 33 is provided on the emergency branch 32. The air pressure sensor 34 is used to monitor the pressure inside the high-pressure storage tank 28 in real time. The safety valve 35 can automatically open when the pressure inside the high-pressure storage tank 28 is too high to release gas and ensure safety.

[0023] Specifically, after completing the closing work of the inflation valve body 30, the solenoid valve 13 is in a closed state. When the air pressure sensor 14 detects that the pressure in the branch air path 12 drops by more than a certain threshold, the control unit immediately triggers the emergency system and opens the emergency solenoid valve 2 33, so that the high-pressure gas quickly enters the high-pressure airbag 29, and the high-pressure airbag 29 begins to expand to delay the time when the seal of the inflation valve body 30 fails. When in use, a touch switch can be provided outside the high-pressure airbag 29. The touch switch is connected to an alarm or a warning light to remind the staff in time. By adopting the above method, it is of great significance in places with extremely high requirements for environmental isolation, such as sterile operating rooms in laboratories, clean workshops for electronic chip manufacturing, etc., and can prevent external pollutants from entering, protect the internal precision experiments or production environment from interference, and ensure the accuracy of experimental results and the stability of product quality.

[0024] The back-blowing air system includes a back-blowing pipe 20, along which a back-blowing solenoid valve 21 and a flow regulating valve 22 are sequentially arranged in the direction of gas flow in the back-blowing pipe 20, a diverter valve 23 is installed at the air outlet of the back-blowing pipe 20, and an air pressure sensor 4 is arranged between the diverter valve 23 and the flow regulating valve 22, and a back-blowing branch 24 is installed at the air outlet of the diverter valve 23, and a back-blowing solenoid valve 25 is arranged on the back-blowing branch 24, and the air outlet end of the back-blowing branch 24 is connected to the main air pipeline 8. By arranging the back-blowing solenoid valve 21 and the back-blowing solenoid valve 25, it is possible to prevent the normal inflation from being affected, and the flow regulating valve 22 can control the pressure and flow of the back-blowing gas, wherein the diameter of the back-blowing branch 24 and the back-blowing pipe 20 can be slightly smaller than the main air pipeline 8.

[0025] The connection points between the back-blowing branch 24 and the main gas pipeline 8 are respectively located at the gas outlet end of the pressure reducing valve 10, the pressure reducing valve 10 and the pressure relief valve 17, and between the pressure maintaining valve 9 and the second solenoid valve.

[0026] Specifically, when the control system is working normally, the back-blowing system is in a closed state. When the control unit determines that the main air pipeline 8 may be blocked (such as abnormal increase in inflation pressure, significant decrease in inflation speed, etc.) based on the signal of the air pressure sensor 18, the back-blowing system is started, and the back-blowing solenoid valve 21 is controlled to open. The main air pipeline 8 is reversely purged according to the set back-blowing pressure and time. In this process, the back-blowing solenoid valve 21 on the back-blowing branch 24 between the pressure-maintaining valve 9 and the solenoid valve 2 is first opened for reverse purge, and then the back-blowing solenoid valve 21 is closed and the pressure reducing valve is opened. The back-blowing solenoid valve 21 on the back-blowing branch 24 between the pressure relief valve 10 and the pressure relief valve 17 is reversely purged, and then the back-blowing solenoid valve 21 is closed and the back-blowing solenoid valve 21 on the back-blowing branch 24 at the air outlet end of the pressure reducing valve 10 is opened for reverse purge, so that the entire main air pipeline 8 can be reversely purged. Moreover, in the above process, after completing one purge work, an inflation work can be attempted. When the inflation pressure or speed is normal, there is no need for subsequent back-blowing work. At the same time, the above method can also avoid the phenomenon that the purge effect is not ideal due to the long distance between the back-blowing port and the blockage point.

[0027] An inflatable door includes an inflatable door body 30 and an inflatable door control system, wherein the inflatable door body 30 is rotatably connected to a door frame via a plurality of hinges 11, a male joint and a female joint in the joint 31 are respectively located on an inner hinge piece and an outer hinge piece on one of the hinges 11, and when the inflatable door body 30 is closed, the male joint and the female joint complete the work.

[0028] The working process of this embodiment is as follows: when the inflation door body 30 is inflated and sealed, the inflation door body 30 is closed and the magnetic lock is activated to ensure that the door body is fixed, and the air pump 1 is controlled by the control unit to start the inflation process so that the set air pressure inside the door is reached. When the inflation rubber strip 16 leaks, the emergency system starts to work to maintain the sealing state of the inflation door body 30. When the control unit determines that the main air pipeline 8 may be blocked (such as abnormal increase in inflation pressure, significant decrease in inflation speed, etc.) according to the signal of the air pressure sensor 18, the back-blowing system is started; when the door needs to be opened, the air is deflated first to reduce the air pressure in the door body and then the power supply of the magnetic lock is disconnected so that the door can be opened. In the event of an electronic system failure, the air can be manually deflated through the emergency switch to ensure safety and allow maintenance of the system.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inflation valve control system, comprising a control unit, a display module and an air source supply module, characterized in that: The air inlet end of the air source supply module is connected to a coarse filter, the air outlet end of the air source supply module is connected to a check valve, the air outlet end of the check valve is connected to a fine filter, and the air outlet end of the fine filter is provided with a main air pipeline; A second solenoid valve, a pressure-maintaining valve and a pressure-reducing valve are sequentially arranged along the gas flow direction in the main gas pipeline, a branch gas path is arranged at the gas outlet end of the pressure-reducing valve, the gas outlet end of the branch gas path is connected to a branch gas inlet pipe through a joint, and the gas outlet end of the branch gas inlet pipe is connected to an inflatable rubber strip; The branch air path is provided with a solenoid valve 1 and a pressure sensor 1, and a back-blowing system and an emergency system are connected between the fine filter and the solenoid valve 2 through a four-way connection.

2. An inflation valve control system according to claim 1, characterized in that: The air source supply module includes two air pumps and a compressor. The air inlet ends of the air pump and the compressor are connected to a coarse filter through an air inlet pipeline, and the air outlet ends of the air pump and the compressor are connected to a check valve through an air outlet pipeline.

3. The inflation valve control system according to claim 1, characterized in that: The main gas pipeline is provided with a second air pressure sensor and an emergency switch, and the second air pressure sensor and the emergency switch are arranged between the pressure maintaining valve and the pressure reducing valve.

4. The inflation valve control system according to claim 1, characterized in that: The emergency system includes an emergency pipeline, along the gas flow direction in the emergency pipeline, an emergency solenoid valve and a high-pressure storage tank are sequentially arranged, the gas outlet end of the high-pressure storage tank is connected to an emergency branch, the gas outlet end of the emergency branch is connected to a high-pressure airbag through a joint, and the high-pressure airbag is arranged around the outside of the inflatable rubber strip.

5. The inflation valve control system according to claim 4, characterized in that: The high-pressure storage tank is equipped with a safety valve and a third air pressure sensor, and the emergency branch line is provided with a second emergency solenoid valve.

6. The inflation valve control system according to claim 1, characterized in that: The back-blowing air system includes a back-blowing pipeline, and a back-blowing solenoid valve 1 and a flow regulating valve are sequentially arranged along the gas flow direction in the back-blowing pipeline. A diverter valve is installed at the air outlet end of the back-blowing pipeline, and an air pressure sensor 4 is arranged between the diverter valve and the flow regulating valve. A back-blowing branch is installed at the air outlet end of the diverter valve, and a back-blowing solenoid valve 2 is arranged on the back-blowing branch. The air outlet end of the back-blowing branch is connected to the main air pipeline.

7. The inflation valve control system according to claim 6, characterized in that: The connecting points between the back-blowing branch and the main gas pipeline are respectively located at the gas outlet end of the pressure reducing valve, the pressure reducing valve and the pressure relief valve, and between the pressure maintaining valve and the second solenoid valve.

8. An inflation door, characterized in that: It comprises an inflation valve body and an inflation valve control system as described in any one of claims 1-7.

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