JPH1061843A - Coupling device for pipe line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform washing of a connection part and to perform steam sealing during the passage of treatment liquid by a method wherein when a tubular part on the male side is fitted in a tubular part on the female side, a closed space with which a valve seat part for coupling is surrounded is formed, and ports for an inlet and an outlet communicated with the space are formed in the wall surface of the tubular part on the female side. SOLUTION: During insertion of a tubular part 14 on the male side, a space 21 is formed in a tubular part 13 on the female side and around a valve body part 16 for coupling. Ports 22 and 23 communicated with the space 21 are formed in the wall of the tubular part 13 on the female side. Sealing is practicable such that during the passage of liquid, steam and aseptic air are injected in the space 21 through the inlet port 22 with a pressure higher than that of passing liquid and discharged through the outlet port 23. Further, when the space is in a state that the passage of liquid is impossible to make, washing liquid is injected in the space 21 through the inlet port 23 and discharged through the outlet port 23 and this way washed a connection part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint device for connecting a pipe to a pipe, a tank to a pipe, and the like.

[0002]

SUMMARY OF THE INVENTION The present invention relates to a novel pipe joint device in which a connection portion can be washed and a steam seal or a sterile air seal can be performed when a processing liquid (stock solution) flows. The purpose is to provide.

[0003]

In order to achieve the above object, a pipe joint device according to the present invention comprises an A-side pipe having an on-off valve at the joint end and a pipe joint at the joint end. A female connector for connecting to a B-side conduit having an opening / closing valve at the mouth, the female connector being removably fitted to a tip of a joint end of the A / B-side conduit.
A male side tubular portion is provided, and a connecting valve seat portion and a connecting valve body portion for connecting the connecting ends of the A and B side pipes are provided on the distal end surfaces of the connecting ends of the A and B side pipes. A cylinder having a piston built therein is provided around the joint end of the A-side conduit, and a connecting pipe slid by the piston is attached around the female tubular part. A joint device is provided at a joint end of the side pipe, and a sealed space surrounding the connection valve seat is formed in the female tubular portion when the male tubular portion is fitted into the female tubular portion. And an inlet / outlet port communicating with the space is provided on the wall surface of the female tubular portion.

[0004]

In the embodiment shown in the drawing, an inward A-side flange-shaped portion 3 is provided at an edge of a joint end portion 2 in an A-side conduit 1 and an inward edge of a joint end portion 5 in a B-side conduit 4 is provided. Inwardly directed B-side flange-shaped portions 6 are provided, and AB-side valve seats 7 and 8 are provided on the inner surfaces of these AB- and flange-shaped portions 3 and 6, respectively. A and B side valve bodies 9 and 10 which are respectively seated and unseated on the A and B side valve seats 7 and 8 are inserted into the joint ends 2 and 5 of the A and B sides. Valve body 9, 10
Of the A and B side pipes 9 and 10 at the respective protruding ends, and a device (not shown) for seating / separating the A and B side valve bodies 9 and 10 at the protruding ends. Further, a female tubular portion 13 is provided at the tip of the joint end portion 2 in the A-side conduit 1, and a male tubular portion 14 is provided at the joint end portion 5 in the B-side conduit 4.
The male-side tubular portion 14 is made airtight and can be freely inserted and withdrawn, and the male-side tubular portion 14 is provided on the outer surface of the A-side flange-like portion 3 and the outer surface of the B-side flange-like portion 6 with a female-side tubular portion. When it is fully inserted into the part 13, it sits down and the A / B side pipelines 1, 4
Valve seat 15 and valve body 16 for connecting
The connecting valve body 16 is arranged around the joint 2 in the A-side conduit 1 from the seated position to the female / male tubular portions 13, 1.
Cylinder 18 having a built-in piston 17 that moves with a stroke up to the position where the user unseated while inserting 4
And a connecting pipe 19 that slides around the female tubular section 13 in the axial direction around the female tubular section 13 by the above-described piston 17 around the female tubular section 13. A splicing device 20 for joining or canceling the spliced end to the spliced end 5 in the pipe line 4 is provided, and a male side is provided around the connecting valve body 16 in the female tubular portion 13. When inserting the tubular portion 14, the space 21
And the inlet / outlet ports 22 and 23 communicating with the space 21 are provided on the wall surface of the female tubular portion 13.

In the drawings, reference numerals 25 and 26 denote air inlets / outlets for operating the piston 17, 27 and 28 are engaging grooves of the splicing device 20, 29 is a relief hole, 30 is an O-ring, 31
Is a sheet, 32 is a clamp, 33 and 34 are ports 22,
The tube connected to 23 is shown.

In the present invention, the drive for bringing the A and B side valve bodies 9 and 10 into the seated / separated state, the drive for moving the piston 17 forward and backward, and the drive for bringing the splicing device into the splicing state or its disengagement state are performed by hydraulic pressure even with an air cylinder. It may be a cylinder, or it may be manually operated.
One can be a moving tank and the other can be a pipe, and both can be pipes.

[0007]

FIG. 1 shows a state in which the A and B both-side valve bodies 9 and 10 are separated from each other in a state where the connection valve body 16 is seated, and the liquid can pass therethrough. The device 20 includes the joint end 5 in the B-side pipe 4 and the connecting pipe 19.
And the piston 17 is located to the left.
FIG. 2 shows a state in which the connecting valve body 16 is unseated by moving the piston 17 to the right after the A and B both-side valve bodies 9 and 10 are in the seated state, that is, the male-side tubular portion 14 is pulled out halfway. This shows a state in which the liquid is not allowed to pass through, which is present in the female-side tubular portion 13. In this case, the splicing device 20 splics the spliced end 5 of the B-side pipe 4 and the connecting pipe 19. State, and the piston 17 is located to the right. FIG. 3 shows a cut-off state in which the male-side tubular portion 14 is removed from the female-side tubular portion 13 after the joining state by the joining device 20 is released when the AB-side valve bodies 9 and 10 are in the seated state. In this case, if the A-side pipeline 1 and / or the B-side pipeline 4 are configured to be repositionable, the positions can be arbitrarily changed.

When the liquid is allowed to pass as shown in FIG. 1, steam or sterile air is introduced into the space 21 from the inlet port 22 at a higher pressure than the liquid is allowed to pass therethrough.
3, and when the liquid is not allowed to pass through as shown in FIG. 2, the cleaning liquid is introduced into the space 21 through the inlet port 23 and is discharged from the outlet port 23 so that the connection ( Connection) can be cleaned.

[0009]

The pipe joint device according to the present invention is constructed as described above, so that the connecting portion can be washed, and a steam seal or a sterile air seal can be used when the processing liquid (stock solution) flows. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a liquid-permeable state according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which liquid cannot pass therethrough.

FIG. 3 is a cross-sectional view similarly showing a separated state.

FIG. 4 is a sectional view showing a splicing state of the splicing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 A side pipeline 2 Joint end 3 A side flange-like part 4 B side pipeline 5 Joint end 6 B side flange 7 A side valve seat 8 B side valve seat 9 A side valve body 10 B side valve body 13 Female Tubular Portion 14 Male Tubular Portion 15 Connection Valve Seat 16 Connection Valve Body 17 Piston 18 Cylinder 19 Connection Tube 20 Splicing Device 21 Space 22 Inlet Port 23 Outlet Port 25 Air Inlet 26 Air Inlet Outlets 27, 28 Engagement groove 29 Escape hole 30 O-ring 31 Sheet 32 Clamp 33, 34 Tube

Claims (1)

[Claims] 1. A connection between an A-side pipe having an on-off valve at the joint end and an B-side pipe having an on-off valve at the joint end. -A female / male-side tubular portion which is removably fitted to the tip of the joint end of the B-side conduit is provided, and the A / B-side conduit is provided at the distal end surface of the joint end of the A / B-side conduit. Valve seat for connecting the joint end of
A connecting valve body is provided, and a cylinder with a built-in piston is provided around a joint end of the A-side pipe, and a connecting pipe slid by the piston is attached around the female tubular portion. At the end of the connecting pipe, a connecting device is provided at a connecting end of the B-side pipe, and when the male tubular section is fitted into the female tubular section, the connecting valve seat section is enclosed therein. A conduit joint device, wherein a closed space is formed and an inlet / outlet port communicating with the space is provided on a wall surface of the female tubular portion.