JPH0624637Y2 - Connection adapter for containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a container connection adapter that facilitates connection with a hose.

[Prior Art] Various high-purity chemicals are used in the semiconductor manufacturing process. In recent years, as a part of such an automatic chemical supply system, chemicals are stored in pressure-resistant containers, and the chemicals are pressurized by means of pressure. A system that automatically supplies with a hose is used.

However, when connecting a hose for transferring chemicals to such a pressure resistant container, for example, the means shown in FIG. 4 has been adopted. That is, the known hose connecting means shown in FIG. 4 uses a connection adapter 29 mainly composed of a screw-in cap-like cap. The union nut 31 is screwed onto the tubular portion 30 so that the hose 32 is tightened from the outer peripheral direction.

[Problems to be Solved by the Invention] In the hose connecting means, since the adapter 29 has to be rotated when connecting and disconnecting the hose 32 when installing or replacing the pressure-resistant container 33, workability is poor, and the adapter 29 is used. There is a problem that the hose 32 is likely to be twisted when is turned. Further, since the sealing has to be performed by using the O-ring 34 or the like, there is a possibility that the sealing property is deteriorated due to deterioration or the like.

In view of the above points, the present invention aims to facilitate the connection between the pressure resistant container and the hose and improve the sealing performance.

[Means for Solving the Problems] In order to solve the above problems, the present invention is an adapter used for a container of a type in which a liquid inlet and outlet are closed by a screw-type cap, and a male screw is provided on the upper surface of the cap and on the outer circumference. A tubular portion that forms a portion and has an inner hole that communicates with the inside and the outside of the cap portion, and on the upper side of the inner hole of the tubular portion,
A base insertion hole that inserts the insertion tube provided in either the socket or plug base of the pipe joint, consisting of two taper holes with the upper part having a large diameter steep taper hole and the lower part having a small diameter gentle taper hole Further, in the insertion cylinder portion provided at the base of the socket or the plug, a large diameter taper portion capable of closely surface-contacting the large diameter sudden taper hole portion and a small diameter contacting the small diameter gentle taper hole portion are provided. A cap nut having a female thread having the same screw pitch as that of the above-described screw-in cap is used to tighten the base portion of the socket or the plug from the outer peripheral direction.

[Operation] When the connection adapter of this invention is attached to a container,
First, the cap nut is removed from the cap portion, and a pipe having a length reaching the bottom portion of the container is preliminarily fitted to the lower side of the inner hole of the cylindrical portion protruding from the cap portion, and screwed into the liquid inlet / outlet of the container.

Next, for example, the insertion cylinder portion provided on the base portion of the plug is inserted into the base insertion hole portion provided on the upper side of the inner hole of the tubular portion, and then a cap nut is fitted into the tubular portion and screwed in to insert the plug into the tubular portion. Tighten the base from the outer peripheral direction. As a result, the insertion tube portion provided in the base portion of the plug deeply fits into the base insertion hole portion provided in the tubular portion, and at this time, the small diameter portion of the insertion tube portion has the small diameter of the base insertion hole portion provided in the tubular portion. The large-diameter taper portion of the insertion cylinder portion is provided on the cylindrical portion while the large-diameter taper portion of the insertion cylinder portion is in contact with the gentle taper hole portion to center the plug on the large-diameter sharp taper hole portion. The cap portion and the plug are fixed by coming into contact with each other and sealing them.

In this way, after the connection adapter of the present invention is attached to the container, the socket provided at the end of the hose is usually connected by the same operation as when connecting the plug and socket of the quick fitting, for example. Connect to the plug on the adapter.

[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the drawings, 1 is a pressure resistant container, and 2 is a cap portion of a resin-made connection adapter of the present invention screwed into a liquid inlet / outlet portion 3 of the container 1. A cylindrical portion 6 having a male screw portion 5 on the outer periphery and having an inner hole communicating with the inside and outside of the cap portion 2, that is, the inside and outside of the container 1 is projectingly provided on the upper surface portion of the cap portion 2.

At the upper side of the inner hole of the tubular portion 6, either the socket 12 or the plug 13 of the pipe joint 11, which will be described later, is provided with the base 2
The base insertion hole portion 4 into which the insertion cylinder portions 18 and 26 provided in Nos. 1 and 25 are inserted is provided. The base insertion hole portion 4 is composed of two taper hole portions, namely, a large diameter steep taper hole portion 7 having a steep gradient with respect to the axis on the upper side, that is, an upper opening end side, and a small diameter gentle taper hole portion 8 at the lower side thereof. Both the large-diameter steep taper hole portion 7 and the small-diameter gentle taper hole portion 8 are formed such that the diameter gradually decreases toward the lower part.

Reference numeral 9 denotes a cylindrical boss projectingly provided on the inner surface of the cap portion 2. The inner hole of the boss 9 and the inner hole of the cylindrical portion 6 communicate with each other. Reference numeral 10 is a liquid suction pipe.

Reference numeral 11 is a so-called quick pipe joint made of metal, which is composed of a socket 12 and a plug 13.
3 has a built-in valve 14 which pushes each other when they are connected and retreats to open the flow path, and when separated, moves forward to close the flow path. The socket 12 has an engagement groove 15 and a lock ball 16 formed on the outer peripheral portion of the plug 13,
This locking mechanism is a known type in which the socket 12 and the plug 13 can be easily connected and separated via the lock ball 16 by axially operating the sleeve 17 fitted to the outer peripheral surface of the socket 12. There is no difference from the conventional one.

FIG. 1 shows an embodiment in which the plug 13 of the socket 12 and the plug 13 is inserted into the tubular portion 6 of the cap portion 2.

Reference numeral 21 is a base portion of the plug 13, and the base portion 21 is formed in a brim shape. The base portion 21 is formed with an insertion tubular portion 18 which is inserted into the base insertion hole portion 4 of the tubular portion 6 projecting from the upper surface of the cap portion 2. The surface of the insertion tube portion 18 is a smooth surface, and as described below, the base insertion hole portion 4
It is configured so that the concentric state with and the sealed state can be maintained at a high level.

The insertion cylinder portion 18 includes a large-diameter taper portion 19 and a small-diameter portion 20.
It is composed of two parts. The large-diameter taper portion 19 is formed to have substantially the same gradient as the large-diameter steep taper hole portion 7 of the cylindrical portion 6, and is formed so that the large-diameter steep taper hole portion 7 can be brought into close surface contact with the large-diameter steep taper hole portion 7.

The small diameter portion 20 has the same diameter as each other. When the insertion tubular portion 18 is inserted into the tubular portion 6, the outer peripheral surface of the distal end portion of the small diameter portion 20 is a base portion insertion hole of the tubular portion 6. The small diameter gentle taper hole portion 8 formed in the portion 4 comes into contact with the inner peripheral surface.

Then, when the insertion tubular portion 18 of the plug 13 is inserted into the tubular portion 6, the insertion tubular portion 18 is inserted into the base insertion hole portion 4 along the gentle angle taper surface of the small diameter gentle taper hole portion 8 of the tubular portion 6. , The small diameter portion 20 of the insertion tubular portion 18 is guided in the center direction by the tapered surface, and a part of the circumference comes into contact with the linear portion in a substantially linear contact state to ensure the centering of the tubular portion 6 and the plug 13. To On the other hand, on the other hand, the large-diameter tapered portion 1 of the insertion tube portion 18
The outer peripheral taper surface (conical surface) of 9 comes into surface contact with the inner peripheral taper surface of the large-diameter steep taper hole portion 7 of the tubular portion 6, and seals between the tubular portion 6 and the plug 13 by the action of the cap nut 22 described later. Together they are sure.

The cap nut 22 is for fixing the plug 13 to the tubular portion 6 of the cap portion 2, is fitted to the outer peripheral portion of the plug 13, and is the male screw formed on the outer peripheral surface portion of the tubular portion 6. By being screwed onto the portion 5, the upper surface portion of the flange-shaped base portion 21 located near the opening end portion of the tubular portion 6 is pressed. By tightening the cap nut 22, the outer peripheral surface of the large-diameter taper portion 19 of the insertion cylinder portion 18 of the plug 13 is brought into surface contact with a part of the inner peripheral surface of the large-diameter sharp taper hole portion 7 of the cylindrical portion 6. Since it is crimped, perfect adhesion can be achieved and a more complete sealing state can be obtained. Further, even if the resin of the tubular portion 6 is permanently deformed, if the cap nut 22 is further tightened, the cap nut 22 is newly brought into surface contact with each inner circumference, so that the sealed state can be maintained.

FIG. 3 shows an embodiment in which the socket 12 is attached to the tubular portion 6 of the cap 2.

The base portion 25 of the socket 12 is formed with an insertion cylinder portion 26 composed of a large-diameter taper portion 23 and a small-diameter portion 24. The insertion cylinder portion 26 is inserted into the cylindrical portion 6 of the cap portion 2. Has become. The connection structure between the cap portion 2 and the socket 12 is the same as that of the embodiment shown in FIG.

Reference numeral 27 is a hose connecting portion, and 28 is a hose connected to the hose connecting portion 27.

Therefore, as is apparent from the above-described embodiment, a perfect sealing effect can be obtained without using a sealing member such as an O-ring as in the past.

[Advantage of the Invention] As described above, the container connection adapter according to the present invention is an adapter used for a container of a type in which a liquid inlet / outlet is closed by a screw-type cap, and is provided on the upper surface of the cap portion and on the outer periphery. A cylindrical portion having a male screw portion and an inner hole communicating with the inside and the outside of the cap portion is projectingly provided, and on the upper side of the inner hole of the cylindrical portion, the upper portion is a large-diameter taper hole portion and the lower portion is a small-diameter loose portion. A base insertion hole is formed by two tapered holes, which are tapered holes, and the insertion cylinder is inserted in the base of either the socket or the plug of the pipe joint. Further, the base is provided in the socket or the base of the plug. In the insertion tube portion, the large-diameter taper hole portion includes a large-diameter taper portion capable of closely contacting the large-diameter taper hole portion and a small-diameter portion contacting the small-diameter loose taper hole portion, and has the same screw pitch as that of the screw cap. Since the base part of the socket or plug is tightened from the outer peripheral direction with the cap nut having a female screw, the centering of the cap part of the container and the insertion tube part of the pipe joint and the improvement of sealing performance can be achieved, and the sealing effect remains unchanged. Can be maintained.

Furthermore, since the container and hose can be connected via a pipe joint, you can free yourself from the troublesome work of using a tool such as a wrench when installing or replacing the container and hose, and easily installing or replacing the container and hose. In addition, it can be surely performed, and twist of the attached hose can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of the present invention, FIG. 2 is a partially enlarged explanatory view of FIG. 1, FIG. 3 is a vertical sectional side view showing another embodiment, and FIG. It is explanatory drawing which shows an example. DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Cap part, 3 ... Liquid inlet / outlet part 4 ... Base part insertion hole part, 5 ... Male screw part, 6 ... Cylindrical part 7 ... Large diameter sudden taper hole part 8 ... Small diameter loose taper hole part, 11 ... Pipe Coupling 12 ... Socket, 13 ... Plug 18 ... Insertion cylinder part, 19 ... Large diameter taper part 20 ... Small diameter part, 21 ... Base part, 22 ... Cap nut 23 ... Large diameter taper part, 24 ... Small diameter part 26 ... Insertion cylinder part

Claims (1)

[Scope of utility model registration request] 1. An adapter used for a container of a type in which a liquid inlet and outlet are closed by a screw-type cap, wherein an upper surface of the cap portion has a male screw portion on the outer periphery and an inner hole communicating with the inside and outside of the cap portion. A tubular joint is formed by projecting a tubular portion, and on the upper side of the inner hole of the tubular portion, two taper hole portions having a large diameter steep taper hole portion on the upper side and a small diameter gentle taper hole portion on the lower side are formed in the socket of the pipe joint. Alternatively, a base insertion hole for inserting the insertion cylinder provided in either one of the bases of the plugs is provided, and further, in the insertion cylinder provided in the base of the socket or the plug, the large-diameter steep taper hole is provided. A cap nut that has a large-diameter taper part that allows close surface contact and a small-diameter part that comes into contact with a small-diameter loose taper hole, and has a female thread with the same thread pitch as the above screw-on cap. Container connection adapter comprising as tightening the direction.