CN111927288A - 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 PDF

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Publication number
CN111927288A
CN111927288A CN202010890638.2A CN202010890638A CN111927288A CN 111927288 A CN111927288 A CN 111927288A CN 202010890638 A CN202010890638 A CN 202010890638A CN 111927288 A CN111927288 A CN 111927288A
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CN
China
Prior art keywords
ball valve
pneumatic ball
air
alarm device
communicated
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Pending
Application number
CN202010890638.2A
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Chinese (zh)
Inventor
闫博
闫晴
段宁杰
巫宗壮
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Henan Anjiu Medical Equipment Co ltd
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Henan Anjiu Medical Equipment Co ltd
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Publication date
Application filed by Henan Anjiu Medical Equipment Co ltd filed Critical Henan Anjiu Medical Equipment Co ltd
Priority to CN202010890638.2A priority Critical patent/CN111927288A/en
Publication of CN111927288A publication Critical patent/CN111927288A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/20—Gaseous substances, e.g. vapours
    • A61L2/206—Ethylene oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

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 door seal inflatable sealing gasket has the advantages of simple structure, scientific and reasonable design and convenient operation, avoids the influence of overhigh or overlow air pressure in the door seal inflatable sealing gasket on the final sterilization effect, prolongs the service life of the door seal inflatable sealing gasket, and has good social and economic benefits.

Description

Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device
Technical Field
The invention relates to a door seal pressure device, in particular to a constant pressure system of a door seal of an ethylene oxide sterilizing cabinet with an 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.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide a door seal pressure constant system of an ethylene oxide sterilization cabinet with an alarm device, which can effectively solve the problems that the final sterilization effect is poor and the service life of the door seal inflatable gasket is influenced due to too high or too low pressure of the door seal inflatable gasket.
In order to achieve the purpose, the technical scheme includes that the ethylene oxide sterilization cabinet door sealing pressure constant system with the alarm device comprises a pneumatic ball valve and a digital pressure gauge, 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 (programmable logic 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 an air sealing and sealing gasket through the air pipe, an air outlet of the air cylinder is communicated with an inlet of the second pneumatic ball valve through the air pipe and is discharged through the second pneumatic ball valve, the digital pressure gauge communicated with 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, the alarm device is connected with the signal end of the alarm device of the PLC through a signal wire.
The door seal inflatable sealing gasket has the advantages of simple structure, scientific and reasonable design and convenient operation, avoids the influence of overhigh or overlow air pressure in the door seal inflatable sealing gasket on the final sterilization effect, prolongs the service life of the door seal inflatable sealing gasket, and has good social and economic benefits.
Drawings
FIG. 1 is a block diagram of the structure of the present invention.
Detailed Description
The following detailed description of the embodiments of the invention is provided in connection with the accompanying drawings and the detailed description.
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 invention is used specifically, an air inlet pipe 8 is firstly communicated with an additionally arranged air source device (such as an air supply pump), the air source is clean air, a value of required air pressure in an air cylinder 1 is set on a digital pressure gauge 2 (the digital pressure gauge 2 has the function of the digital pressure gauge itself), an electromagnetic signal for opening the first pneumatic ball valve 3 is controlled by a PLC (programmable logic controller) 6, the air source opens the first pneumatic ball valve 3 by utilizing the air pressure through an air inlet, enters the air cylinder 1 through an air pipe, enters a door seal inflatable sealing gasket 5 through an air outlet of the air cylinder 1, the digital pressure gauge 2 monitors the pressure in the air cylinder 1 in real time, when the air pressure in the air cylinder 1 is larger than the set value, the digital pressure gauge 2 transmits the signal to the PLC 6, the PLC 6 gives an electromagnetic signal for closing the first pneumatic ball valve 3, the first pneumatic ball valve 3 is closed, the air inlet is stopped, the sealing of the door seal, 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 door seal inflatable sealing gasket has the advantages of simple structure, scientific and reasonable design and convenient operation, avoids the influence of overhigh or overlow air pressure in the door seal inflatable sealing gasket on the final sterilization effect, ensures that the internal pressure of the ethylene oxide sterilization cabinet does not leak, prolongs the service life of the door seal inflatable sealing gasket, and has good social 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.
CN202010890638.2A 2020-08-29 2020-08-29 Ethylene oxide sterilization cabinet door seals invariable system of pressure with alarm device Pending CN111927288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010890638.2A CN111927288A (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
CN202010890638.2A CN111927288A (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
CN111927288A true CN111927288A (en) 2020-11-13

Family

ID=73309522

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010890638.2A Pending CN111927288A (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) CN111927288A (en)

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