JPH0232502B2 - - Google Patents

Description

[Detailed description of the invention] After the door of a conventional pressure vessel is closed, an arm provided on the door is pushed into a gate-shaped ring provided on the front of the main body to tighten it, and then high-pressure air, etc. is blown from the rear of the gasket. However, if there is even a small gap between the gasket and the main body, high-pressure air will not only be of no use, but also cause damage to the material of the gasket due to repeated pressure. There were various drawbacks such as restrictions on

The present application was invented in view of these drawbacks, and is a method for connecting the main body and door of a pressure vessel such as a high-pressure steam sterilization (disinfector) pressure vessel, a high-pressure gas pressure vessel, a high-vacuum pressure vessel, or a high-pressure liquid pressure vessel. By tightening the flange with a frame body with a U-shaped cross section, it can be firmly tightened, and since the gasket does not need to be hollow, it can be kept airtight just by using an ordinary gasket and pressing it from the front, so it can withstand repeated loads. This invention relates to a method for tightening the door of a pressure vessel, which can be used while maintaining airtightness for a long time even under heavy loads.

Now, to describe the embodiment, the main body 1 of the pressure vessel
A flange 3 is formed around the entire circumference of the front end surface of the inner cylinder 2 facing outward.

Separately, a door 4 is formed whose external size is approximately the same as the external size of the flange 3, and recessed portions 5 and convex portions 6 of the same pitch P are formed alternately over the entire length of the door 4. At the same time, a handle 7 is provided on the front surface of the door 4, an arcuate arm 8 is provided on one side of the front surface of the door 4, a bearing 9 is provided on the other end of the arm 8, and a shaft 11 is attached to the bearing 10 provided on the main body 1. It is rotatably mounted via the

Further, apart from the main body 1 and the door 4, a frame 12 is formed by a member having a U-shaped cross section with an open inner side.
The outer width W of the opening 13 is the same as the inner height h of the opening 13.
is the same as the outside height h of the door, and is an uneven part having the same pitch P as the recesses 5 and protrusions 6 provided at the left and right inside ends of the front plate 14 of the opening 13 of the frame 12 at the left and right outside ends of the door 4. 15 and 16 are formed alternately over the entire length.

Uneven parts 5 and 6 of door 4 and irregular part 1 of opening 13
5 and 16, and the door 4 is formed symmetrically with the opening 13.
This allows it to be fitted from the front.

A wedge part 17 with a thick lower part is provided on the front surface of the protrusion 6 of the door 4, and a wedge part 18 with a thick upper part is formed on the back surface of the protrusion 16 of the frame 12.

Further, a cylinder 19 is provided at the center of the lower part of the frame 12, the upper end of the piston rod 20 of the cylinder 19 is attached to the frame 12, and the lower end of the cylinder 19 is attached to the floor surface on which the main body 1 is installed or to the base frame. .

The rear plate 12a of the frame 12 is attached to the flange 3 of the main body 1.
The frame body 12 is attached to the rear part of the flange 3 with a loose fit.
It is designed to be able to freely slide up and down.

To explain the operation of the above embodiment, cylinder 1
9 to align the position (height) of the opening 13 of the frame 12 and the door 4, and rotate the door 4 to pass through the opening 13 of the frame 12 and open the main body 1. The wedge portion 18 on the back side of the convex portion 16 of the front side plate 12b of the frame body 12 and the front surface of the convex portion 6 of the door 4 are superimposed on the flange 3, and then the cylinder 19 is applied to move the frame body 12 downward. wedge part 17
are engaged to firmly overlap the door 4 with the flange 3 surface to maintain airtightness.

To open the door 4, the cylinder 19 is used to raise the frame 12, align the opening 13 of the frame 12 with the door 4, hold the handle 7, and rotate it forward. At this time, the concave portion 15 and the convex portion 16 of the frame 12 and the concave portion 5 and the convex portion 6 of the door 4 are made to coincide with each other in reverse, that is, the concave portion 15 and the convex portion 6, and the convex portion 16 and the concave portion 5 coincide with each other. It should be formed in such a way that it will.

The door 4 can be kept airtight by firmly tightening both sides.

FIG. 5 shows another frame 12c, and to explain it, the overall shape of the frame 12c is almost the same as that in FIG. The height h between the back surfaces of the door 4 is the same as that of the door 4, and the frame 12c is cut in the middle between the upper and lower sides, and the upper frame 1
2c-1 and a lower frame body 12c-2, and a pin 12f is attached to either the upper frame body 12c-1 or the lower frame body 12c-2 at the cut surface of the front side plate 12e of the frame body 12c, and the pin 12f is attached to the other side. Pipe 1 that fits
2g, and the upper frame body 12c-1 and the lower frame body 12c
-2 is formed so that the pin 12f fits into the pipe 12g when it comes into contact with the pipe 12g.

The piston rod 22 of the cylinder 21 is attached to the center of the outside of the upper frame 12c-1 and the lower frame 12c-2, and the cylinder 21 is fixed to the main body 1, the base frame, or the floor.

To explain the operation of this embodiment, the rotation of the door 4 is the same as that of the first embodiment, but the upper frame 12 is
c-1 and the lower frame body 12c-2 act on the cylinder 21 to move the frame body up and down until the height h of the opening 13 matches the height h of the door 4, and when the height h of the opening 13 matches the height h of the door 4, the door 4 onto the flange 3, then actuate the cylinder 21 to move the upper and lower frames toward the center, fit the pin 12f into the pipe 12g, and overlap the wedge parts 17 and 18 to airtightly close the pipe. be. When opening the door 4, it is sufficient to perform the opposite action.

Furthermore, wedge portions 62 are provided on the back surface of the front side plate 60 of the horizontal portion of the upper and lower frames and on the front surface 61 of the upper and lower ends of the door 4.
63, the four sides of the door 4 can be firmly tightened. Furthermore, a recess 64 and a projection 65 similar to the left and right recesses 5, 6, 15, and 16 are provided on the front side plate 60 and the front surface 61, and wedge portions 62,
It is also possible to provide 63 so that the upper and lower sides are also forced.

In addition to tightening the frame using the cylinder described above, a configuration using a motor, a gear, etc. is as follows.
A nut member 23 is provided at both outer lower ends of the upper frame body 12c-1 divided into upper and lower parts and at both outer upper end parts of the lower frame body 12c-2, and a screw shaft 24 is screwed into the nut member 23. The screws that are screwed into the nut members 23 of the shaft 24 are reverse threaded so that the upper and lower nut members 23 move in the opposite direction as the screw shaft 24 rotates. It is something.

A bevel gear 25 is provided at the upper end of the screw shaft 24, and a bevel gear 29 provided on a rotating shaft 28 that is rotated by a motor 26 whose rotational direction is variable via a speed reducer 27 is meshed with the bevel gear 25.

To explain the vertical action of this configuration, motor 2
Since the bevel gear 29 rotates due to the rotation of 6, the bevel gear 25 meshing with the bevel gear 29 rotates, and the screw shaft 24 rotates at the same time. Depending on the direction of rotation of the screw shaft 24, the nut member 2
The upper and lower frames move up and down when the parts 3 come into close contact with each other or move apart.

Next, to explain the structure and operation of a method for tightening a sliding door, the upper side of a frame 40 having a U-shaped cross section with an open inner side is opened so that a flat door 41 can enter and exit. Width W of the other side outer plate 42b from one end 42a of the opening 42 of 40 and the door 4
1, and the widths w and w' of both sides of the frame body 40 are formed as w = 2w' (width on one side x twice the width on the other side), and the door 41 is opened from the top. After inserting, move the narrow side frame 40a to the door 41 side, and the side frame 4
An end of the door 41 fits into the inside of the door 40a, and the other end of the door 41 moves halfway up the side frame 40b.

Openings 4 in both side frames 40a and 40b of frame body 40
On the back side of the end of the door 4, wedge portions 44, which are thick in the outward direction of the side frame 40b, are formed at regular intervals or in a vertically elongated manner.
Wedge portions 45 having a thick wall on the opposite side to the thick side of the wedge portion 44 are formed at regular intervals or vertically on both ends of the front surface of the frame 40, and when the frame body 40 is moved in the closing direction, the wedge portions 44 and 45 are separated. are formed so as to engage and firmly press the door 41 toward the main body 1 side.

Furthermore, at the upper and lower frames 40c of the frame 40 and the upper and lower ends of the door 41, when inserted into the frame 40 of the door 41, they do not come into contact with the back surface of the front plate of the upper and lower frame 40c and the front of the upper and lower ends of the door 41, Move the frame 40 and move the door 41
Wedge portions 46 and 47 are formed at regular intervals to engage when pressing the body 1 against the main body 1 so that a strong pressing force is applied.

Next, to explain the moving device for the door 41 and the frame 40, there is a wire or chain 4 at the center of the upper end of the door 41.
8 is attached, and the wire or chain 48 is connected to the pulley 49.
is wound and attached to a drum 52 which is rotated by a motor 51 with a speed reducer 50, and the door 41 moves up and down as the wire or chain 48 is extended or wound up by the rotation of the motor 51.

A nut member 56 screwed onto a screw shaft 55 rotated by a variable rotation direction motor 54 with a reducer 53 is attached to one side of the frame 40, and the screw shaft 55
Although the nut member 56 is configured to move left and right by the rotation of the nut member 56, it may also be moved left and right by a telescoping mechanism such as a cylinder.

With the above configuration, after extending the wire or chain 48 and lowering the door 41 to the lowest part of the frame 40, when the motor 54 is driven to rotate the screw shaft 55 and move the frame 40 toward the door 41, each The wedge portions 44, 45 and 46, 47 are pressed into engagement to firmly press the door 41 against the flange 3 of the main body 1, thereby airtightly closing the door 41. When opening the door 41, the operation is reversed to completely raise the door 41 and open the opening 42.

In the case of the sliding door 41, since the opening 42 can be flush with the floor surface, the transport vehicle can be placed inside the pressure vessel, making the work easier.

In all embodiments, the same reference numerals indicate the same members and have the same functions.

57 is a roller attached to the wedge part on the frame 12, 40 side, and the roller 57 is attached to the wedge part on the door side when the door is completely tightened by the frame.
A recess 58 is provided which fits into the recess 58 . The number of rollers 57 and recesses 58 may be freely selected and designed.

In this application, after the door is superimposed on the front flange of the main body as described above, the outer peripheral side of the flange and the door is tightened with a frame body having a U-shaped cross section, so that the door is firmly attached to the flange of the main body with the frame body. Since it can be tightened to maintain airtightness, airtightness can be maintained with a very simple gasket, and the overall structure is simple.

[Brief explanation of drawings]

Figure 1 is a perspective view of the entire pressure vessel, Figure 2 is a perspective view of the vessel body, Figure 3 is a perspective view of the frame, Figure 4 is a perspective view of the lid, and Figure 5 is a perspective view of another embodiment. A perspective view of the frame, FIGS. 6 and 7 are front views of another embodiment,
8 and 9 are cross-sectional views of the wedge portion.

Claims (1)

[Claims] 1 A frame body having a groove-shaped member with a U-shaped cross section and an open groove on the inside and an opening is formed, and a wedge part with a thick upper part is provided on the back side of the front plate of the frame body, and this The frame body is loosely engaged in its opening with a flange provided on the entire front end surface of the inner cylinder of the main body of the pressure vessel so as to be oriented outward, and is configured to be capable of pressure movement in the vertical direction. In addition, a wedge portion with an inner thickness at the bottom is provided on the front surface of the outer periphery of the door that opens and closes the opening of the main body, and the frame body engaged with the outer periphery of the door and the flange of the main body has a pressure motion. 1. A pressure vessel door clamping structure, characterized in that the pressure vessel door is configured to be clamped so that each of the wedge portions comes into close contact with each other by applying the following pressure.