JPH0137253Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a door opening/closing mechanism in a pressure vessel that seals various gases such as hot steam and sterilizing gas.

[Conventional technology]

As a type of pressure vessel, for example, a sterilizer for sterilizing medical instruments and the like is known.

In other words, this sterilizer stores the medical instruments, etc. in a containment chamber of a container body installed on the floor, seals it with a door attached to the front of the container body, and then heats the containment chamber. It is sterilized by enclosing steam, ethylene oxide gas, etc.

[Problem that the invention attempts to solve]

However, in conventional pressure vessels such as the above-mentioned sterilizer, the bottom of the containment chamber is higher than the installation floor, so it is difficult to store items such as medical instruments transported on a trolley or the like into the containment chamber as they are. This requires work such as lifting the stored items from the cart, etc. and loading them into the coverslipping chamber. Similarly, when leaving the warehouse, the items to be stored must be unloaded from the coverslipping chamber and loaded into the coverslipping chamber, etc. must be transshipped to.

Therefore, if the bottom of the inclusion chamber is at approximately the same height as the floor in front of it, such work becomes unnecessary, and it becomes possible to enter and exit the storage with the stored items placed on a trolley, etc. However, when the door is of a swing type, a new problem arises in that it becomes difficult or impossible to open and close the door.

In view of the above problems, the main purpose of the present invention is to enable a swing-type door to be opened and closed even when the bottom surface of the containment chamber of a pressure vessel is set at approximately the same height as the floor surface.

[Means for solving problems]

For this purpose, the door opening/closing mechanism for a pressure vessel according to the present invention supports a door that opens and closes a containment chamber of a pressure vessel main body so as to be movable up and down at a hinged portion with the container main body, and attaches the door to a side wall of the door. A required number of engagement protrusions are provided protrudingly, and an engagement notch into which the engagement protrusions can enter is formed in a holder provided at the opening of the inclusion chamber, and the notch faces the side wall of the door when closed. The side wall of the holder has a substantially inverted L-shape bent downward.

[Effect]

According to the above configuration, when the door is in the closed state, the engagement projection protruding from the side wall of the door is located at the lower end of the downwardly extending portion of the engagement notch formed in the holder on the pressure vessel main body side, It is held in a state where it cannot swing in the horizontal direction (opening operation). Therefore, in order to open the door from this state, first move the door upward and then horizontally so that the engagement protrusion follows the shape of the engagement notch in an approximately inverted L-shape. Do this by following the same procedure as for swinging it in the opening direction. When closing the door,
Just do the exact opposite of this. Therefore, even if the bottom of the containment chamber of the pressure vessel is set at approximately the same height as the floor, the door can be swung in an upwardly floating state, so opening and closing operations can be performed without any problem. .

〔Example〕

Next, an embodiment in which the pressure vessel door opening/closing mechanism according to the present invention is applied to a medical instrument sterilizer will be described based on the drawings.

In FIG. 1, reference numeral 1 denotes a pressure vessel body constituting a sterilizer, and 2 denotes a single-opening door for opening and closing a containment chamber 3 formed within the body 1. The hinged parts 4, 4 of the door 2 with the pressure vessel main body 1 are connected to a rod 6 which is inserted into support rings 5, 5 fixed to the main body 1 side so as to be able to reciprocate vertically, and the door 2. The arm 7 is provided protruding from one side, has one end rotatably connected to the rod 6, and moves up and down with the rod 6 within the range between the support rings 5, 5. One of the two hinge parts 4, 4 is connected to a hydraulic cylinder 8 having a rod 6 fixed to the main body 1 side. A large number of engaging protrusions 10 are protruded at equal intervals on both side walls 9, 9 of the door 2, and are fixed to both sides of the opening 3' of the inclusion chamber 3 on the front surface of the main body 1 to close the door 2. The holders 11, 11 for maintaining the state are each formed with engagement notches 12 into which the engagement protrusions 10 can enter. The engagement notch 12 has a substantially inverted L-shape in the side wall 11' of the holder 11 that faces the side wall 9 of the door 2 when closed, that is, a portion 12b extending in the swinging direction (horizontal direction) of the door 2; The part 12
A portion 12c bent at right angles from b and extending downward.
have. In addition, when the door 2 is moved to the upper stroke position by the hydraulic cylinder 8, the height of each engagement protrusion 10, the horizontally extending portion 12b of each engagement notch 12, and the front side portion 12a thereof. are becoming consistent with each other. Hollow portions 13 formed in the holders 11, 11 include notches 14 corresponding to the engaging notches 12, and protrusions 17 between the notches 14 (see FIGS. 2 to 4).
Elongated slide members 15, which have alternating openings (see figure) and are used to open and close the front side portions 12a of the engagement notches 12, are respectively inserted so as to be able to reciprocate in the vertical direction. Reference numeral 16 denotes a sealing member made of a rubber-like elastic material and provided around the front surface of the opening of the enclosure chamber 3 to keep the enclosure chamber 3 airtight when the door 2 is closed.

This embodiment has the above-mentioned configuration, and in order to close the door 2, the door 2 is first floated by the hydraulic cylinder 8 via the rod 6 of the hinge part 4 and the arm 7. . At this time, each engagement protrusion 10 of the door 2 is connected to the front side portion 12 of the engagement notch 12 formed in the holder 11 of the pressure vessel main body 1.
a and the horizontally extending portion 12b, so when the door 2 is swung in the closing direction in this state, the engagement protrusion 10 will be at the front surface of the engagement notch 12, as shown in FIG. From the side portion 12a, a horizontally extending portion 12b is entered. Next, when the door 2 is lowered by the hydraulic cylinder 8,
The engagement protrusion 10 has an engagement notch 12 as shown in FIG.
It moves downward within the downwardly extending portion 12c, and eventually comes into contact with its lower end 12d and stops. Thereafter, as shown in FIG. 4, the slide member 15 inserted into the holder 11 is moved downward, and the front side portion of the engagement notch 12 is moved with the protrusion 17 formed between the notches 14. By closing 12a,
The door 2 will be fixed in the closed state. Further, in order to open the door 2, it is sufficient to perform the procedure in the exact opposite manner to the above, that is, the sliding member 15
By aligning the notch 14 with the height position of the front side portion 12a of the engagement notch 12, this portion 12a is opened (Fig. 3), and the door 2 is floated to the upper stroke position by the hydraulic cylinder 8. (Engaging protrusion 1
0 upwardly along the downwardly extending portion 12c) to the state shown in FIG. 2, and then swung in the opening direction.

As shown in FIG. 5, the pressure vessel main body 1 is installed by digging down a part F' of the floor surface F so that the bottom surface 18 of the containment chamber 3 is approximately at the same height as the floor surface F. However, according to the above configuration, since the door 2 can be opened and closed while floating upward, there is no possibility that the lower part 19 of the door 2 will come into contact with the floor surface F and the opening/closing operation will be hindered. There isn't.

[Effects of the invention] As explained above, the present invention makes the door hinged to the pressure vessel main body movable up and down, and has an engaging protrusion protruding from the door and an inverted L-shape formed on the main body side. Since the engagement notches and the engagement notches are configured to engage with each other when the door is in the closed state, and the door is configured to open and close (swing) while floating upward, the filling chamber of the container body is Even if the bottom surface is set at approximately the same height as the floor surface, problems such as those caused by the door getting caught on the floor surface when opening and closing cannot occur. Since it is now possible to set the pressure vessel at a height of , Items to be stored (items to be sterilized such as medical instruments)
Not only that, but also the above-mentioned trolley etc. which are the means of transportation can be sterilized at the same time, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
Figures A in Figures 2 to 4 are partial front views showing the operation of the embodiment, and Figures B are A in Figure A.
- A sectional view and FIG. 5 are partially cutaway front views showing the installed state of the same embodiment. 1... Pressure vessel body, 2... Door, 3... Enclosure chamber, 3'... Opening, 4... Hinged part, 8... Hydraulic cylinder, 9, 11'... Side wall, 10... Connection Engagement projection, 11...Holder, 12...Engagement notch, 12b
. . . Portion extending downward, 15 . . . Slide member.

Claims (1)

[Scope of utility model registration request] A door for opening and closing the containment chamber of the pressure vessel body is supported at a hinged portion with the vessel body so as to be vertically movable;
A required number of engagement protrusions are provided on the side wall of the door, and an engagement notch into which the engagement protrusion can enter is formed in a holder provided at the opening of the inclusion chamber, and the notch is configured to allow the door to close when closed. A door opening/closing mechanism for a pressure vessel, characterized in that the side wall of the holder facing the side wall has a substantially inverted L shape bent downward.