JP2534261Y2 - Injection cylinder coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for connecting a dispensing cylinder to a container.

[Conventional technology]

Conventionally, when a dispensing cylinder is connected to a container containing contents such as a chemical solution and a chemical solution, an O-ring is placed on an O-ring mounting surface of a mouth portion of the container.
A means is employed in which a ring is placed, a spout cylinder is fitted to the mouthpiece from above, and the spout cylinder is tightened to press the O-ring with the pressing surface of the spout cylinder. If the spout cylinder is not sufficiently fastened to the mouthpiece, the O-ring will not be sufficiently fastened and liquid leakage will occur. And, when the fastening of the dispensing cylinder is too strong, the O-ring is excessively deformed, and the sealing property is also deteriorated. Therefore, conventionally, in order to keep the tightening force of the dispensing cylinder constant, torque management is performed using a torque wrench that measures the tightening torque, so that the O-ring tightening force is kept constant.

[Problems to be solved by the invention]

However, using a torque wrench to keep the O-ring tightening force constant is cumbersome and time-consuming.

The present invention has been made in view of the above circumstances, does not require torque management when pressing the O-ring, and
A technical problem is to provide a spout cylinder connecting device that reliably prevents leakage.

[Means for solving the problem]

The present invention has the following configuration in order to solve the above technical problem.

That is, an O-ring mounting surface 5 and a side wall portion 3 of the barrel are provided on the barrel portion 2 of the container 1, and the O-ring of the barrel portion 2 is attached to the pouring tube 10 fitted to the barrel portion 2. Placement surface 5 and barrel side wall 3
The O-ring pressing surface 13 and the pouring cylinder side wall 11 facing each other, and a protruding portion 14 located below the pouring cylinder side wall 11 and protruding outward are provided. The O-ring pressing surface 13 is located at a position where the spouting tube contact surface 12 formed at 10 is in contact with the tube portion contact surface 4 formed at the end of the tube portion 2.
Is in pressure contact with the O-ring 20 placed on the O-ring placement surface 5, and the mouthpiece side wall 3 and the spout cylinder side wall 11 are in pressure contact with both sides of the O-ring 20, and When the 10 is detached from the mouthpiece 2 of the container 1, an O-ring 20 is engaged with the projection 14 of the ejection tube 10 to remove the container together with the ejection tube 10 from the container 1.

[Action]

According to the present invention, when the O-ring 20 is interposed between the O-ring mounting surface 5 of the mouthpiece portion 2 and the O-ring pressing surface 13 of the dispensing tube 10 and the dispensing tube 10 is tightened, the dispensing tube 10 is lowered. The O-ring pressing surface 13 of the pouring tube 10 presses the O-ring 20 against the O-ring mounting surface 5 of the barrel portion 2, and both sides of the O-ring 20 are in contact with the barrel side wall 3 and the pouring tube. It is pressed against the side wall 11.

Then, when the dispensing cylinder contact surface 12 abuts on the mouthpiece portion contact surface 4, the lowering of the dispensing cylinder 10 stops.

At the position where the pouring cylinder contact surface 12 comes into contact with the barrel contact surface 4 and stops, the O-ring 20 holds the O-ring mounting surface 5, the O-ring pressing surface 13, the barrel side wall 3, and the The four surfaces of the outlet cylinder side wall 11 are pressed against each other with an optimum pressing force.

By the way, when the O-ring 20 is pressed by the O-ring pressing surface 13, the hydraulic pressure that can be closed by the O-ring 20 and the O-ring pressing surface 13 that is in pressure contact with the O-ring 20 is, of course, the higher the pressing force, the higher the sealing pressure. The resulting hydraulic pressure also increases.

Then, in the present invention, the inside and outside of the container 1 is
And the O-ring pressing surface 13 or the O-ring mounting surface 5 and the pressing portion by the side wall 3 of the barrel, so that the two portions are closed in series. The hydraulic pressure that can be sealed off by the O-ring 20 is the hydraulic pressure that can be sealed off at the pressure contact portion by the pouring cylinder side wall 11 plus the hydraulic pressure that can be sealed off by the pressure contact portion by the O-ring pressing surface 13, or O
The hydraulic pressure is obtained by adding the hydraulic pressure that can be closed at the pressure contact portion by the ring mounting surface 5 to the hydraulic pressure that can be closed at the pressure contact portion by the ring mounting surface 5.

Therefore, in the present invention, the force for pressing the O-ring 20 with the dispensing cylinder 10 is small, and the liquid pressure that can be closed is increased.

When the dispensing cylinder 10 is removed from the mouthpiece 2 of the container 1,
The O-ring 20 is detached from the container 1 together with the pouring tube 10 in a state where the O-ring 20 is engaged with the protrusion 14 of the pouring tube 10. Therefore, damage to the O-ring 20 can be found at an early stage,
The container 1 and the discharge tube 10 can be easily and sufficiently washed.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. FIG.

<First embodiment> Figs. 1 and 2 show a first embodiment, and show a spout cylinder connecting device of the present invention.

In this spouting tube connecting device, a container 2 made of tetrafluoroethylene resin (PTFE) is provided in a container 1, and an O-ring mounting surface 5 and a side wall 3 of a tube are provided on the inner surface of the tube 2. ing. Then, a tetrafluoroethylene resin (PT
FE). The pouring cylinder 10 has an O-ring mounting surface 5 of the barrel section 2 and a side wall 3 of the barrel section.
The O-ring pressing surface 13 and the injection cylinder side wall 11 facing the
Provided on the outer surface of 10. An outwardly protruding portion 14 is provided on the outer surface of the dispensing cylinder 10 and below the dispensing cylinder side wall 11.
The ring 14 is prevented from dropping from the injection tube 10. The dispensing cylinder 10 is located at a position where the dispensing cylinder contact surface 12 formed on the dispensing cylinder 10 is in contact with the barrel contact surface 4 formed on the end of the barrel 2. In this case, the O-ring pressing surface 13 is pressed against the O-ring 20 placed on the O-ring placing surface 5, and the mouth tube side wall 3 and the pouring tube side wall 11 are formed on both sides of the O-ring 20. The outer diameter of the spout cylinder side wall 11 and the inner diameter of the mouth tube part side wall 3 are formed so as to be pressed against the inner wall of the spout cylinder.

The O-ring 20 is made of a copolymer of ethylene tetrafluoride and propylene hexafluoride (FEP) or a copolymer of ethylene tetrafluoride and perfluoroalkoxyethylene (PFA) using Viton rubber at the center. ) Was used.

<Second Embodiment> FIG. 3 shows a second embodiment, and the same parts as those in the previous embodiment are denoted by the same reference numerals and description thereof is omitted.
In this embodiment, the injection cylinder 10 and the nut 6 of the first embodiment are used.
Are integrally formed as screw-out tubes 10 with screw tubes 8 so as to be screwed into the mouth tube portion 2. Therefore, assembling is simple because the number of parts is smaller than that of the embodiment.

[Effect of the invention]

As described above, in the spout cylinder connecting device according to the present invention, the O-ring 20 is tightened with a desired tightening force at the position where the spout cylinder abutment surface 12 abuts the mouthpiece abutment surface 4. As a result, the tightening force can be made constant without the need for a torque wrench.

Also, the O-ring 20 is connected to the O-ring pressing surface 13 and the side wall of the discharging cylinder.
11 and the O-ring mounting surface 5 are in pressure contact with the four sides of the barrel side wall 3, and the inside and outside of the container 1 are closed at two locations formed in series, so that a large hydraulic pressure can be applied with a small pressing force. The seal was able to be closed, and the O-ring 20 was not overtightened to reduce the sealing force.

Further, in this spout cylinder connecting device, when the spout cylinder 10 is detached from the mouthpiece portion 2 of the container 1, the O-ring 20 is engaged with the projection 14 of the spout cylinder 10 and attached to the spout cylinder 10. The O-ring 20 is securely removed from the container 1 together with the dispensing tube 10 in a state where the container 1 has been removed.
Can be easily and sufficiently cleaned.

Also, when removed from the container 1, the O-ring 20
Since the O-ring 20 is mounted on the O-ring 20, the O-ring 20 can be visually recognized from the outside, and the degree of deformation or damage of the O-ring 20 can be easily confirmed. Further, when the O-ring 20 is mounted on the dispensing tube 10, cleaning around the O-ring 20 can be performed more easily than when the O-ring 20 remains in the container 1.

[Brief description of the drawings]

1 and 2 show a first embodiment according to the present invention. FIG. 1 is an assembled sectional view of a main part, FIG. 2 is an enlarged detailed view of a part A in FIG. 1, and FIG. It is an assembly sectional view of an important section of an example. DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Mouth part, 3 ... Mouth part side wall, 4 ...
Mating part contact surface, 5 ... O-ring mounting surface, 10 ...
11: Side wall of the dispensing cylinder, 12: Contact surface of the dispensing cylinder, 13: O-ring pressing surface, 20: O-ring.

Claims (1)

(57) [Scope of request for utility model registration] An O-ring mounting surface and a side wall of a barrel portion are provided on a barrel portion of a container, and an ejection tube fitted to the barrel portion.
The O-ring mounting surface 5 and the O-ring pressing surface 13 and the pouring tube side wall 11 of the poling tube portion 2 opposing the pouring tube side wall 3. The ejection tube 10 has a projection portion 14 projecting from the ejection tube 10, and the ejection tube contact surface 12 formed on the ejection tube 10 is At a position where the O-ring pressing surface is in contact with the contact surface 4,
13 is pressed against the O-ring 20 mounted on the O-ring mounting surface 5, and the mouthpiece side wall 3 and the discharge cylinder side wall 11 are
The O-ring 20 is pressed against both sides of the O-ring 20 to remove the dispensing tube 10 from the mouthpiece 2 of the container 1.
A spout cylinder connecting device which is locked to the protrusion 14 of the container 1 and detached from the container 1 together with the spout cylinder 10.