CN212454163U - Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device - Google Patents
Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device Download PDFInfo
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- CN212454163U CN212454163U CN202021844400.8U CN202021844400U CN212454163U CN 212454163 U CN212454163 U CN 212454163U CN 202021844400 U CN202021844400 U CN 202021844400U CN 212454163 U CN212454163 U CN 212454163U
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Abstract
A constant pressure system of a door seal of an ethylene oxide sterilization cabinet with an alarm device is disclosed, wherein a pneumatic ball valve comprises a first pneumatic ball valve and a second pneumatic ball valve, the first pneumatic ball valve and the second pneumatic ball valve are connected with a signal output end of a PLC (programmable logic controller) through an RS232 bus, the first pneumatic ball valve is communicated with an air inlet pipe, the first pneumatic ball valve is communicated with an air cylinder, the air cylinder is communicated with a door seal inflatable gasket, the air cylinder is communicated with the second pneumatic ball valve and is discharged through the second pneumatic ball valve, a digital pressure gauge communicated with the interior of the air cylinder is arranged outside the air cylinder, the digital pressure gauge is connected with a pressure gauge signal end of the PLC through a signal line, and the alarm device is connected with an alarm device signal end of the PLC through a signal line; the utility model discloses simple structure, design scientific and reasonable, convenient operation has avoided the door to seal inflatable seal pad internal gas pressure too high or cross low influence terminal sterilization effect, has prolonged the life of door and has sealed inflatable seal pad, has good society and economic benefits.
Description
Technical Field
The utility model relates to a door seals pressure device, especially an ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device.
Background
At present, the common electromagnetic valve is generally used for controlling air inlet and air outlet in the use process of the ethylene oxide sterilization cabinet, so that the door seal inflatable sealing gasket is inflated and decompressed, and when no air pressure exists, the door seal inflatable sealing gasket is wrapped inside by a sterilization cabinet body fixing mechanism, so that the damage to the door seal inflatable sealing gasket caused by uncertain factors is avoided; on the contrary, after having atmospheric pressure, atmospheric pressure blows it up, presents the ellipse, is full of the clearance of the cabinet body AND gate, and the leakproofness is better, realizes the sealed to the sterilization cabinet door, nevertheless, because the problem that exists structurally, in the use, utilize the solenoid valve to have following drawback: 1. in flammable and explosive places, a non-explosion-proof element is used, so that certain potential safety hazards exist; 2. the door seal inflation seal is not monitored in real time, if the door seal inflation seal is low in air pressure, gaps are enlarged, leakage points exist, the sealing effect of the sterilization cabinet is poor, and the sterilization vacuum degree is influenced, so that the sterilization effect is influenced; on the contrary, if the air pressure of the door seal inflatable seal is high, the service life of the door seal inflatable seal is seriously influenced, the door seal inflatable seal is burst, an emergency is caused, and the overall sterilization effect of the ethylene oxide sterilization cabinet is also influenced, so that the existing door seal inflating and pressure relieving device needs to be further improved and innovated.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model aims at providing an ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device, can effectively solve the door and seal the inflatable packer pressure too high or cross low problem that leads to the final sterilization effect poor and influence its life excessively.
In order to achieve the above object, the technical solution of the present invention is that, an ethylene oxide sterilization cabinet door seal pressure constant system with an alarm device, comprising a pneumatic ball valve and a digital pressure gauge, wherein the pneumatic ball valve comprises a first pneumatic ball valve and a second pneumatic ball valve, the first pneumatic ball valve and the second pneumatic ball valve are connected with a signal output end of a PLC controller through an RS232 bus, an air inlet of the first pneumatic ball valve is communicated with an air inlet pipe, an air outlet of the first pneumatic ball valve is communicated with an air inlet of an air cylinder through an air pipe, an air outlet of the air cylinder is communicated with an air inlet of a door seal air-filling seal pad through an air pipe, an air outlet of the air cylinder is communicated with an inlet of the second pneumatic ball valve through an air pipe and is discharged through the second pneumatic ball valve, the digital pressure gauge communicated with the air cylinder is installed outside the air cylinder, the digital pressure gauge is connected with a pressure gauge signal end of the PLC, the alarm device is connected with the signal end of the alarm device of the PLC through a signal wire.
The utility model discloses simple structure, design scientific and reasonable, convenient operation has avoided the door to seal inflatable seal pad internal gas pressure too high or cross low influence terminal sterilization effect, has prolonged the life of door and has sealed inflatable seal pad, has good society and economic benefits.
Drawings
Fig. 1 is a structural block diagram of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The constant pressure sealing system of the ethylene oxide sterilizing cabinet door with the alarm device comprises a pneumatic ball valve and a digital pressure gauge, wherein the pneumatic ball valve comprises a first pneumatic ball valve 3 and a second pneumatic ball valve 4, the first pneumatic ball valve 3 and the second pneumatic ball valve 4 are connected with a signal output end of a PLC (programmable logic controller) 6 through an RS232 bus, an air inlet of the first pneumatic ball valve 3 is communicated with an air inlet pipe 8, an air outlet of the first pneumatic ball valve 3 is communicated with an air inlet of an air cylinder 1 through an air pipe, an air outlet of the air cylinder 1 is communicated with an air inlet of an air sealing and sealing gasket 5 through the air pipe, an air outlet of the air cylinder 1 is communicated with an inlet of the second pneumatic ball valve 4 through the air pipe and is discharged through the second pneumatic ball valve 4, the digital pressure gauge 2 communicated with the air cylinder 1 is arranged outside the air cylinder 1, the digital pressure gauge 2 is connected with a pressure gauge signal end of the PLC 6 through a signal line, the alarm device 7 is connected with the signal end of the alarm device of the PLC 6 through a signal wire.
In order to ensure better implementation effect, the digital pressure gauge 2 is a CWP-C403 digital pressure gauge.
The alarm device 7 is a BJJ-DC 24V-IIB/IIC type audible and visual alarm with an IP65 explosion-proof grade.
The pneumatic ball valve is a Q641F-16C explosion-proof pneumatic ball valve, consists of an AT9 (GT) series pneumatic actuator and a floating ball valve, is provided with an explosion-proof travel limit switch, an explosion-proof electromagnetic valve, a pressure reducing valve and a 4-0.7Mpa air source, can realize the switching operation, and sends two pairs of passive contact signals to indicate the switching state of the valve.
When the utility model is used specifically, the air inlet pipe 8 is firstly communicated with an additional air source device (such as an air supply pump), the air source is clean gas, then the value of the required air pressure in the cylinder 1 is set on the digital pressure gauge 2 (the digital pressure gauge 2 has the function), the PLC controller 6 is controlled to give the electromagnetic signal for opening the first pneumatic ball valve 3, the air source utilizes the air pressure to open the first pneumatic ball valve 3 through the air inlet, the air enters the cylinder 1 through the air pipe, the air enters the door seal inflatable gasket 5 through the air outlet of the cylinder 1, the digital pressure gauge 2 monitors the pressure in the cylinder 1 in real time, when the air pressure in the cylinder 1 is larger than the set value, the digital pressure gauge 2 transmits the signal to the PLC controller 6, the PLC controller 6 gives the electromagnetic signal for closing the first pneumatic ball valve 3, the first pneumatic ball valve 3 is closed, the air intake is stopped, the sealing of the door seal inflatable gasket is finished, the sealing function, when the air pressure in the air cylinder 1 is smaller than a set value, the digital pressure gauge 2 transmits a signal to the PLC controller 6, the PLC controller 6 gives an electromagnetic signal for opening the first pneumatic ball valve 3, the air source opens the first pneumatic ball valve 3 again by utilizing the air pressure to supplement the air pressure, the pressure in the door seal inflatable seal 5 rises until the monitoring pressure of the digital pressure gauge 2 is larger than the set value again, the PLC controller 6 controls the first pneumatic ball valve 3 to close again to complete the action of supplementing the air pressure, and the digital pressure gauge 2 monitors the pressure in the air cylinder 1 in real time to ensure that the air path of the inflatable seal gasket keeps a constant pressure state.
After the ethylene oxide sterilization cabinet finishes the sterilization process or under special conditions, the door is opened, the door seal inflatable sealing gasket 5 must be exhausted, then the cabinet door is opened, otherwise, the service life of the door seal inflatable sealing gasket 5 is influenced, when the air is required to be exhausted, the PLC 6 is controlled to give an electromagnetic signal for opening the second pneumatic ball valve 4, the gas in the cylinder 1 utilizes the air pressure to open the second pneumatic ball valve 4, the gas in the door seal inflatable sealing gasket 5 is decompressed to the cylinder 1, the gas in the cylinder 1 is exhausted through the second pneumatic ball valve 4, the pressure in the cylinder 1 is gradually reduced, when the digital pressure gauge 2 monitors that the pressure value is 0.0Mpa, the exhaust is finished, the digital pressure gauge 2 transmits a signal to the alarm device 7, the alarm device reminds an operator of the change of sound and light, the exhaust is finished, and the next operation can be carried out.
The utility model discloses simple structure, design scientific and reasonable, convenient operation has avoided the door to seal inflatable seal pad internal gas pressure too high or cross low influence terminal sterilization effect, guarantees that ethylene oxide sterilizer internal pressure does not leak, has prolonged the sealed life who fills up of door, has good society and economic benefits.
Claims (4)
1. A constant pressure sealing system of an ethylene oxide sterilization cabinet door with an alarm device comprises a pneumatic ball valve and a digital pressure gauge, and is characterized in that the pneumatic ball valve comprises a first pneumatic ball valve (3) and a second pneumatic ball valve (4), the first pneumatic ball valve (3) and the second pneumatic ball valve (4) are connected with a signal output end of a PLC (programmable logic controller) controller (6) through an RS232 bus, an air inlet of the first pneumatic ball valve (3) is communicated with an air inlet pipe (8), an air outlet of the first pneumatic ball valve (3) is communicated with an air inlet of an air cylinder (1) through an air pipe, an air outlet of the air cylinder (1) is communicated with an air inlet of an air sealing and sealing gasket (5) through the air pipe, an air outlet of the air cylinder (1) is communicated with an inlet of the second pneumatic ball valve (4) through the air pipe and is discharged through the second pneumatic ball valve (4), the digital pressure gauge (2) communicated with the interior of the air cylinder (1) is arranged outside the air cylinder (1), the digital pressure gauge (2) is connected with a pressure gauge signal end of the PLC (6) through a signal line, and the alarm device (7) is connected with an alarm device signal end of the PLC (6) through a signal line.
2. The ethylene oxide sterilization cabinet door sealing pressure constant system with the alarm device as claimed in claim 1, wherein the digital pressure gauge (2) is a CWP-C403 digital pressure gauge.
3. The ethylene oxide sterilizing cabinet door sealing pressure constant system with the alarm device as claimed in claim 1, wherein the alarm device (7) is a BJJ-DC 24V-IIB/IIC type audible and visual alarm with an IP65 explosion-proof grade.
4. The ethylene oxide sterilization cabinet door sealing pressure constant system with the alarm device as claimed in claim 1, wherein the pneumatic ball valve is a Q641F-16C explosion-proof pneumatic ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021844400.8U CN212454163U (en) | 2020-08-29 | 2020-08-29 | Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021844400.8U CN212454163U (en) | 2020-08-29 | 2020-08-29 | Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212454163U true CN212454163U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021844400.8U Active CN212454163U (en) | 2020-08-29 | 2020-08-29 | Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212454163U (en) |
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2020
- 2020-08-29 CN CN202021844400.8U patent/CN212454163U/en active Active
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