Safety lock device used for preventing error opening of pulsation vacuum-pressure steam sterilization equipment chamber door
A technology of pressure steam and sterilization equipment, which is applied in the direction of water supply equipment, sanitary equipment for toilets, heating, etc., can solve problems such as danger, safety hazard, pressure data distortion, etc., and achieve short structure, safe protection operation, and high safety Effect
Active Publication Date: 2015-04-08
LAOKEN MEDICAL TECH
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Problems solved by technology
However, the electrical system always has defects that are prone to failure. For example, if the pressure electrical sensor fails, the pressure data collected and transmitted to the central control system will be distorted or inaccurate. The safe high pressure is misjudged as a safe pressure, thus turning on the power supply of the door opening motor, which brings safety hazards to the user to open the warehouse door by mistake; for another example, if the central control system fails, unsafe high pressure in the warehouse may also occur. It is misjudged as safety pressure, which brings danger to users by mistakenly opening the warehouse door
That is to say, the current pressure vessel safety device that only uses one electrical safety lock still has certain safety hazards in daily use.
Method used
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[0023] Such as Figure 1 to Figure 4 As shown, the first embodiment of the present invention is: a safety lock device for preventing the door of pulsating vacuum pressure steam sterilization equipment from being accidentally opened, which consists of a mechanical pressure collector 10, a connecting pipe 20, and a micro switch 30 , switch base 40 and contact piece 60, wherein the mechanical pressure collector 10 is composed of a cylinder body 11, a push rod 12, a return spring 13, a bellows 14, a bellows seat 15, a sealing rubber pad 16 and a cover plate 17, The ejector rod 12 adopts a T-shaped stepped shaft structure. The shaft at the big end of the ejector rod 12 extends into the cylinder body 11 and forms a transition fit with the inner cavity of the cylinder body 11. The matching gap is 0.05mm to 0.1mm, and the shaft at the small end of the push rod 12 passes through the guide hole at the center of the cover plate 17 and stretches out of the cylinder body 11.
[0024] The ...
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The invention discloses a safety lock device used for preventing error opening of a pulsation vacuum-pressure steam sterilization equipment chamber door. The device comprises a mechanical pressure collector (10), a connection pipe (20), a micro-switch (30), and a door-opening motor (70). A sterilization chamber (80) of the pulsation vacuum equipment communicates with a cylinder (11) of the mechanical pressure collector through the connection pipe (20). The micro-switch (30) adopts a contact-type electrical switch and is electrically connected in a power supply circuit of the door-opening motor (70). Steam in the sterilization chamber (80) is delivered into the cylinder (11) through the connection pipe (20), and acts upon an ejection rod (12) arranged in the cylinder. When steam pressure in the sterilization chamber is higher than external atmospheric pressure, the steam pressure pushes the ejection rod to move forward and to contact a contact head of the micro-switch. The circuit of the micro-switch is disconnected, and the power supply circuit of the door-opening motor is cut off. Therefore, sterilization chamber door error opening is prevented, and safety of the pulsation vacuum-pressure steam sterilization equipment is improved.
Description
technical field [0001] The invention relates to a control system for preventing the door of high-temperature and high-pressure sterilization equipment from being accidentally opened, in particular to a door opening control device applied to pulsating vacuum pressure steam sterilization equipment, belonging to the technical field of steam sterilization medical equipment . Background technique [0002] Pulsating vacuum pressure steam sterilization is a commonly used sterilization method with good sterilization effect, low cost and fast speed. It has been widely used by major hospitals, pharmaceutical factories and other related institutions for many years. The pulsating vacuum pressure steam disinfection and sterilization equipment belongs to the pressure vessel. According to national regulations, the pressure vessel must be equipped with a safety lock device to prevent the door from being opened when there is unsafe pressure in the vessel, so as to avoid safety accidents. Th...
Claims
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IPC IPC(8): A61L2/26A61L2/07
Inventor 刘勇刘云强杨云华李坤林常相辉
Owner LAOKEN MEDICAL TECH