JPH0439143Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a container with a double structure in which an inner can of approximately the same shape and size is attached inside an outer can. The present invention relates to a container having a double structure, which allows pipes to be connected easily and quickly, and which prevents dust from entering the inside.

Prior Art One of the typical liquids in which dust must be prevented from entering is a chemical liquid used as a cleaning liquid in semiconductor manufacturing processes. Conventionally, this chemical liquid is placed in a container as shown in Fig. 5 or 6, and when in use, pipes are connected to the gas inlet b and the chemical outlet c provided in the lid a, respectively, and the gas is injected. The gas pressure of the inert gas injected into the container d through the inlet causes it to be taken out through the outlet. In such containers, the gas inlet and chemical outlet are always closed with caps on each other to prevent dust from entering, and the caps must be removed and temporarily opened in order to connect the pipes. It is required to perform the connection work as quickly as possible even when the time comes. For this purpose, it is preferable to use a one-touch coupler that can be attached and detached with one touch, but in order to be able to attach and detach the one-touch coupler, it is necessary to secure a certain amount of space between the inlet and the outlet to fit your fingertips. ,
It is necessary to ensure that work can be carried out without any hindrance, and therefore the lid has to be large.
This brings about the following disadvantages. That is,
In Figure 5, the lid is fixed to the mouth of the container at the flange e with bolts, but the larger the lid, the more bolts are used, so it is difficult to clean the inside of the container or replace the chemical solution. When attaching and detaching the lid, it takes a lot of effort and dust tends to accumulate, and when attaching and detaching the bolt, the accumulated dust may enter the container. On the other hand, as shown in Fig. 6, in the case of the type in which the lid g is installed by screwing in, it is easy to attach and remove, but when the diameter of the lid becomes large, there are problems with the machining accuracy of the screw. In the case of a plastic container, it becomes easily deformed and the sealing performance deteriorates, and when the container is shaken during transportation, there is a risk that the solution inside may spill or dust may enter.

In addition, it is generally known that containers have a double structure, with an inner can of the same shape and size placed inside the outer can, and the inner can can be opened by dividing the outer can into upper and lower halves and removing the upper half. There is also one that can be taken out (Utility Model Publication No. 61-21376).

Problems to be solved by the invention The invention has a double structure by attaching an inner can of almost the same shape and size to the outer can, and attaching the mouth of the inner can to the mouth of the outer can on the upper side. There are two openings formed by insertion, and the lid is screwed into each opening, allowing the one-touch coupler to be removably attached to the lid, and the lower end of the outer can can be separated and removed. The aim is to provide a container in which the inner can can be easily replaced, but the problem is that when the lid is removed to clean the inside of the container or to replace the chemical solution, the cleaning solution or There is a risk that chemical liquid may enter between the outer can and inner can from between the openings of the outer can and inner can. If cleaning liquid or chemical liquid gets in, remove the lower end one by one and remove the cleaning liquid or chemical liquid that collects inside the lower end. It is extremely troublesome to remove. As shown in Utility Model Publication No. 61-21376, the above problem can be solved by installing an O-ring between the mouth parts for sealing, but on the other hand, the structure becomes complicated and it is difficult to replace the inner can. This causes a problem.

This invention was made in consideration of these points,
The purpose of this is that the inner can can be easily replaced, and even if cleaning liquid or chemical solution gets between the inner can and the outer can, it can be easily removed, and the outer can is slightly deformed. To provide a double-structured container in which the lower end of a divided outer can can be attached even when the outer can is divided, and the joint between the inner can body and the lower end is not exposed to the outside.

Solution to the Problem The container of the present invention has a double structure, with an inner can of almost the same shape and size attached to the outer can, and the upper part has the opening of the inner can connected to the opening of the outer can. There are two ports that can be simply inserted, and a lid to which a one-touch coupler can be removably attached is screwed to each port, and one lid has a gas inlet.
In a container in which the other lid is provided with an outlet for the content liquid, and the lower end of the outer can is split so that it can be removed from the outer can body, the lower end of the outer can protrudes downward from the lower part of the outer can body. It is inserted into the cylindrical mounting part and joined to the outer can body, and the legs provided at the lower end and the mounting part are screwed together, and a plug is provided at the bottom for draining liquid. This is a characteristic feature.

The one-touch coupler used here is a known one, such as a fitting that can be attached to a water pipe faucet or gas pipe with one touch.

Normally, a cap is placed over the inlet or outlet of the container except when taking out the internal solution, but in order to prevent dust from adhering to the area around the container, a cover is attached to the container to cover these areas. It is desirable to seal it tightly to prevent it from entering.

Embodiment The container 1 has a double structure consisting of an inner can 2 made of polytetrafluoroethylene and an outer can 3 made of metal that protects it. When cleaning, the cleaning liquid flows down smoothly and prevents the formation of pools. Two openings 4, which are formed by inserting the opening of the inner can 2 into the opening of the outer can 3, are protruded from the upper side with enough space for the fingertips to enter. , each port 4 has, as shown in FIG.
Each lid 6 is removably screwed on. A cap (not shown) is always placed over the insertion port 7 that protrudes from the lid 6 and serves as a gas inlet or an internal solution outlet, and a gas pipe or an internal solution take-out pipe is connected when the internal solution is taken out. A one-touch coupler can be attached removably.

The insertion port 7 and the one-touch coupler are known, and an example thereof is shown in FIGS. 3 and 4.
That is, FIG. 3 shows the insertion port 7, which is made of rubber and has a valve 9 inside and a coil spring 10 that biases the valve in the direction of protruding from the insertion port 7.
is inserted, and the valve 9 is closed in the state shown in the figure, protruding from the insertion port 7, and is configured to open when pushed in against the action of the spring 10. As shown in FIG. 4, the one-touch coupler includes a rubber socket tubular body 12 to which a gas pipe or outlet pipe (not shown) is connected to one end, and a socket that is slidably mounted on the body 12, and is normally fitted with a spring 13. Sleeve 14 held in extended position by action
and pushed radially inward by the sleeve,
A ball 16 is removably fitted into a circumferential groove 15 on the outside of the insertion port, which can escape outward when the sleeve 14 is pushed against the action of the spring 13.
It consists of a coil spring 17 fitted into the main body and a valve 18 having the same structure as the valve 9 described above. When attaching the one-touch coupler to the insertion port 7, the one-touch coupler is inserted into the insertion port 7 while the sleeve 14 is pushed in against the action of the spring 13. Then, the sleeve 14 is released and the ball 16 is pushed inward to form the circumferential groove 15.
to fit. In this state, both valves 9 and 18 are pushed into each other and are in an open state. The one-touch coupler is removed after the sleeve 14 is pushed in against the action of the spring 13.

The outer can 3 constituting the container 1 is divided at its lower end, and the divided bowl-shaped lower end 3a has cylindrical legs 2.
1 is installed. The leg 21 is fixed at the upper part to a cylindrical mounting part 22 fixed to the lower part of the outer can body with a screw 23, and thereby the lower end part 3
Assembling a. 24 in the figure is a socket,
25 is a plug. A cylindrical enclosure 27 is also fixed to the upper part of the outer can 3, and a hole is formed in the enclosure 27 to form a handle 28, and the enclosure 27 is sealed to allow access to the lid 6, insertion port 7, etc. A handle cover 29 is attached to prevent dust from adhering, and a lid cover 30 is detachably attached to the top. 32 is a washing water outlet.

According to this embodiment, since the lid is a screw-in type,
It is easier to attach and detach compared to the flange type shown in Figure 5. By forming two openings on the container, the diameter of each opening can be made smaller, which prevents problems in processing accuracy and deformation. Even if a screw-in type is used, the sealing performance will not be compromised.The upper part has an enclosure and a lid cover and handle cover are attached to create a sealed structure, making it difficult for dust to get in.The outer can can be screwed. The lower end can be removed by loosening it, so you can remove the lid and remove the inner can, or push the inner can into the outer can, insert the mouth of the inner can into the mouth of the outer can, and then close the lid. The inner can can be easily replaced by screwing it in, and the inner can can be made thick so that the liquid inside does not easily swell or permeate. Even if cleaning liquid or chemical liquid gets into the space between the mouths of the outer and inner cans when attempting to replace the outer and inner cans, it is easy to remove the outer can from the plug. Even if the outer can is slightly deformed, cleaning liquid and chemical solutions that collect at the bottom can be removed.
Mounting is possible if the lower end of the outer can can be placed inside the cylindrical mounting part, and has the effect that the joint between the outer can body and the lower end of the outer can can also be hidden by the mounting part.

Effects of the invention As described above, the container of the present invention has a double structure by attaching an inner can of almost the same shape and size to the outer can, and the opening of the inner can is attached to the upper part of the outer can. There are two openings that can be simply inserted into the can, and a lid is screwed into each opening so that the one-touch coupler can be removably attached to the lid, and the lower end of the outer can can be separated and removed. In addition, the outer can body is made by inserting it into the mounting part on the main body side, connecting the mounting part and the legs on the lower end side with screws, and providing a plug at the bottom. It is a screw-in type, and when taking out the internal solution, it is only necessary to attach a one-touch coupler, so attachment and detachment can be done easily and quickly.As a result, the contamination of dust can be reduced, and there are two openings. This allows the diameter of each mouth to be made smaller, so there is no reduction in sealing performance due to the machining accuracy of the screws. Since the inner can is simply inserted into the mouth of the outer can, it is easy to attach and remove the inner can, and it is easy to replace the inner can when cleaning the inside of the container or replacing the chemical solution. Even if cleaning liquid or chemical liquid gets into the gap between the mouth of the outer can and inner can, the cleaning liquid or chemical liquid accumulated at the bottom of the outer can can be easily and easily removed from the plug. Even if the outer can is slightly deformed, it can be installed as long as the lower end of the outer can can be inserted into the cylindrical attachment part, and the joint can be hidden by the attachment part. It has the effect of

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the container according to the present invention, Fig. 2 is an enlarged view with a part of the vicinity of the opening cut away, Fig. 3 is a sectional view of the insertion port, Fig. 4 is a sectional view of the coupler, and Fig. 5 is a sectional view of the coupler. FIG. 6 is a schematic diagram of a conventional example. 1... Container, 2... Inner can, 3... Outer can, 4
... Mouth, 6 ... Lid, 7 ... Socket, 21 ...
Leg, 27...enclosure, 28...handle, 29...handle cover, 30...lid cover.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An inner can of almost the same shape and size as the outer can is attached inside the outer can to create a double structure, with the opening of the inner can attached to the opening of the outer can on the upper side. There are two ports that can be simply inserted into the holder, and a lid to which a one-touch coupler can be removably attached is screwed to each port.One lid has a gas inlet, and the other lid has a is provided with an outlet for taking out the internal solution, and the lower end of the outer can is split and can be removed from the outer can main body.
is inserted into a cylindrical attachment part 22 protruding downward from the lower part of the outer can body and joined to the outer can body, and the leg 21 provided at the lower end and the attachment part 22 are screwed together with screws 23. A container characterized in that a plug 25 for draining liquid is provided at the bottom. (2) The container according to claim 1, wherein an enclosure surrounding the lid is attached, and a cover is detachably attached to the enclosure.