JPH0926031A - Sealing device of pressure container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent foreign bodies existing outside a pressure container from entering spaces to be generated between beam members and a thin slab member in the state of deformation by connecting the beam members to be thin slab member through an elastic body layer. SOLUTION: A lid assembly body S uses a flexible thin slab member 23 and is made up by providing in parallel a number of beam members 24 on one side surface of the thin slab member 23 through an elastic body layer 40. The beam member 24 are connected only by parts opposite to the thin slab member 23, and the adjoining fellow beam members 24 are not fixed and are made in a free state. As a result, when the lid assembly body S passes a direction change part between an open position and a closure position, the peripheral intervals of the adjoining beam members 24 are widened according to the deformation of the thin slab members 23, and the whole of the lid assembly body S is bent. Accordingly, local deformation is not generated at the thin slab member 23, so the breakage of the thin slab member 23 can be prevented. In addition, as the elastic body layer 40 is deformed elastically, foreign bodies such as refuse and dust do not enter into spaces between th e thin slab member 23 and the beam members 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel sealing device.

[0002]

2. Description of the Related Art As is well known, an autoclave for sterilization,
BACKGROUND ART Sealing devices for various pressure vessels such as food processing retort devices have conventionally used doors of an integral structure having a considerable thickness in order to maintain airtightness and strength. Examples of such doors include those equipped with a rotary shaft for opening and closing operations in front or side of the pressure vessel, and those in which the door is slid vertically or horizontally to open and close. When tightening to the pressure vessel, use a radially arranged tightening rod attached to the door, tighten the door using a screw extending from the opening of the pressure vessel, or attach to the opening of the pressure vessel. Then, there is a type that uses a tightening ring that meshes with the outer periphery of the door (so-called clutch door type).

[0003]

By the way, in the sealing device using the door as described above, not only the door moving space at the time of opening and closing is large due to its structure, but also the opening position of the door is not limited. Since the pressure vessel is projected to the outside of the container, there are various restrictions when installing this kind of pressure vessel.

In order to solve the above-mentioned inconvenience, the applicant has a small moving space and a small storage space in which a thin plate member for maintaining airtightness and a large number of beam members for maintaining strength are combined. A pressure vessel sealing device using a lid assembly has been previously proposed (see Japanese Patent Application No. 1-278928). The lid assembly of the sealing device according to the above application includes a closed position on the front surface of the opening of the pressure vessel and an open position on one side wall (for example, the side wall surface) of the side walls continuous with the surface on which the opening is provided. It reciprocates while bending and deforming the space,
Therefore, the beam members are arranged side by side in a state of being fixed only on the surface facing the thin plate member, and adjacent beam members are not fixed to each other and are in a free state. However, since the thin plate member and the beam member are directly connected to each other by a screw, a rivet or the like, or a weld or the like,
In the connecting portion therebetween, the thin plate member cannot locally bend. That is, as shown in FIGS. 6 to 10, the bending deformation of the lid assembly 1 during the opening / closing operation is caused by the thin plate member 2.
The deformation at this time occurs between the connecting portions 4 with the beam member 3. For this reason, the thin plate member 2 is not uniformly curved as a whole, and is deformed into a substantially polygonal shape as shown in FIG. 10, so that stress is locally concentrated and is likely to be damaged. State thin plate member 2
There is a risk that foreign matter may enter the gap between the beam member 3 and the beam member 3.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and is a lid assembly formed by arranging a large number of beam members in parallel on one surface of a flexible thin plate member. To
What is characterized in that the beam member is connected to a thin plate member via an elastic body layer in a structure arranged to be movable between a closed position on the pressure container and an arbitrary open position on the container peripheral wall. There is.

According to the above-mentioned means, since the elastic body layer is interposed between the facing surfaces of the thin plate member and the beam member, the thin plate member forms the elastic body layer on the beam member at the connecting portion with the beam member. By compressing and deforming toward the side, stress concentration can be relaxed and the service life of the thin plate member can be improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described below. 1 to 5 show a configuration example of a pressure vessel sealing device according to the present invention.

In the figure, A is a pressure vessel and S is a lid assembly. The pressure vessel A is a sterilization autoclave in this embodiment. Therefore, the pressure vessel A is provided with the vapor chamber 11 as a heating source so as to surround the sterilization chamber 10 inside. On one surface of the pressure vessel A, an opening 12 for taking in and out an object to be sterilized is provided, and on the side of the opening 12 the lid assembly S is provided.

The lid assembly S uses a flexible thin plate member 23, and a large number of beam members 24 are juxtaposed on one surface of the thin plate member 23 with an elastic layer 40 interposed therebetween. That is, as shown in detail in FIG. 3, between the facing surfaces of the thin plate member 23 and the beam member 24, an elastic body having elasticity and flexibility such as synthetic resin such as nylon or rubber is molded into an appropriate shape. It is preferable that the thin plate member 23 and the beam member 24 are connected to each other in a compressed state. The thin plate member 23 and the beam member 24 are connected to each other by locking the thin plate member 23 at both ends of the beam member 24, and the thin plate member 23 and the beam member 24 are caulked with a rivet or the like, and bolt-nut fixed. It is possible to combine them by
In the case of this example, the bolt 2 inserted from the thin plate member 23 side
5 is screwed into a nut member 26 attached to the beam member 24 side.

The lid assembly S is attached such that the other surface (that is, the surface on which the beam member is not provided) faces the opening 12 of the pressure vessel A, and the front surface of the opening 12 of the pressure vessel A is closed. The opening 12 is opened and closed by reciprocating between a position and an accommodating position provided on an appropriate side wall (a wall portion in this embodiment) of the peripheral wall of the pressure vessel. Reference numeral 30 in the drawing is a tightening mechanism of the lid assembly S, which is an appropriate actuator (for example, a direct-acting type such as a hydraulic cylinder or an air cylinder, or a rotary type such as a hydraulic motor or a rotary actuator). 31) and a pressing cam 32 operated by this actuator.
A desired number of actuators 31 are arranged around the opening 12 of the pressure vessel A (in the illustrated embodiment, four on each side of the opening, a total of eight), and each pressing cam 32 is attached to the lid assembly. It faces the beam member 24 on the S surface. Further, the back surface of the pressing cam 32 is always in sliding contact with the supporting member 13 fixed to the pressure vessel A, and as described later, the pressure from the sterilization chamber 10 acting on the lid assembly S is controlled by the pressing cam 32. It can be supported by the support member 13 via the.

In the above structure, the lid assembly S is moved from the solid line position (open position) in FIG. 1 to the two-dot chain line position (closed position).
When it is moved to, the beam member 24 is connected only at a portion facing the thin plate member 23 as described above, and the adjacent beam member 24 is connected.
Since the comrades are not fixed and are in a free state, the lid assembly S
2 as it passes through the diverting portion between the open and closed positions (because both positions are substantially perpendicular to each other)
As shown in FIG. 5, the circumferential distance between the adjacent beam members 24 increases in accordance with the deformation of the thin plate member 23, and the entire lid assembly S bends. Therefore, the thin plate member 23 is uniformly and smoothly bent and deformed at the above-mentioned direction changing portion in accordance with the movement of the lid assembly S, so that the thin plate member 23 is not locally deformed as in the conventional case. Since the thin plate member 23 can be prevented from being damaged, and the elastic layer 40 elastically deforms following the deformation of the thin plate member 23, dust can be collected in the gap between the thin plate member 23 and the beam member 24 as in the conventional case. Foreign matter such as dust does not enter, and it is possible to prevent a failure due to this.

The tightening / sealing operation of the lid assembly S is carried out by inserting the pressing cam 32 into the gap between the lid assembly S and the support member 13 by the actuator 31 after it has moved to the closed position. Done by. Of course, the opening operation of the lid assembly S is performed in the reverse order of the above.

In the above description, the elastic layer 40 covers the entire surface of the thin plate member 23, but in the present invention,
The present invention is not limited to the above-described embodiment, and may be partially provided around the joint between the beam member 24 and the thin plate member 23.

[0014]

As described above, according to the present invention, since the elastic layer is interposed between the facing surfaces of the thin plate member and the beam member, the bending deformation corresponding to the movement locus of the closed door is achieved. At this time, since the thin plate member is not locally deformed, the thin plate member can be prevented from being damaged, and the elastic body layer is deformed following the deformation of the thin plate member. Foreign matter does not enter the gap between the beam member and the beam member, and damage due to this can be prevented, and because the above foreign matter does not enter, it is suitable for applications with many hygienic restrictions such as pressure vessels for sterilization. It is possible to provide a closed device for a pressure vessel.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of a lid assembly of a pressure vessel sealing device according to the present invention.

FIG. 2 is a partial sectional view of the embodiment.

FIG. 3 is a detailed view (enlarged view) of FIG.

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a cross-sectional view of FIG.

FIG. 6 is a front view showing a closed state of a lid assembly of a pressure vessel sealing device as a premise of the present invention.

FIG. 7 is a transverse sectional view of the same 6.

8 is a vertical cross-sectional view of FIG.

FIG. 9 is a cross-sectional view of a closed door of a premise example.

FIG. 10 is a detailed view (enlarged view) of FIG.

[Explanation of symbols]

 A pressure vessel S lid assembly 23 thin plate member 24 beam member 40 elastic layer

[Procedure amendment]

[Submission date] July 10, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

In order to solve the above-mentioned inconvenience, the applicant has a small moving space and a small storage space in which a thin plate member for maintaining airtightness and a large number of beam members for maintaining strength are combined. A pressure vessel sealing device using a lid assembly has been previously proposed (see Japanese Patent Application No. 1-278928). The lid assembly of the sealing device according to the above application includes a closed position on the front surface of the opening of the pressure vessel and an open position on one side wall (for example, the side wall surface) of the side walls connected to the surface on which the opening is provided. It reciprocates while bending and deforming the space,
Therefore, the beam members are arranged side by side in a state of being fixed only on the surface facing the thin plate member, and adjacent beam members are not fixed to each other and are in a free state. However, since the thin plate member and the beam member are directly connected to each other by a screw, a rivet or the like, or a weld or the like,
In the connecting portion therebetween, the thin plate member cannot locally bend. That is, as shown in FIGS. 6 to 10, the bending deformation of the lid assembly 1 during the opening / closing operation is caused by the thin plate member 2.
The deformation at this time occurs between the connecting portions 4 with the beam member 3. For this reason, the thin plate member 2 is not uniformly curved as a whole, and is deformed into a substantially polygonal shape as shown in FIG. 10, so that stress is locally concentrated and is likely to be damaged. State thin plate member 2
Exists in the space between the pressure vessel and the beam member 3 outside the pressure vessel.
There is a possibility that the foreign matter to be standing enters.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is a lid assembly formed by arranging a large number of beam members in parallel on one surface of a flexible thin plate member. 3D
The side where the other side of the thin plate member faces the opening of the pressure vessel
In order to be able to move between a closed position on the opening of the pressure vessel and an arbitrary open position on the peripheral wall of the vessel, the beam member is a thin plate through an elastic layer. It is characterized by being connected to a member.

Claims (1)

[Claims] 1. A lid assembly S formed by arranging a large number of beam members 24 in parallel on one surface of a flexible thin plate member 23 is provided at a closed position on a pressure vessel A and an arbitrary open position on a peripheral wall of the vessel. The beam member 24 is arranged so as to be movable between
Is connected to the thin plate member 23 via an elastic layer 40, and a sealing device for the pressure vessel.