JPH0425224Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a fixing device for fitting joints by grinding in piping materials, glass containers, etc., in automatic synthesis equipment for chemical substances, etc.

[Conventional technology and its problems]

Conventionally, in order to fix the mating joint between the male and female shapes of glassware, horns were prepared in advance for both the male and female shapes of the mating device, and the joints were fixed using fixing tools such as rubber or clips. However, when rubber is used, the desorption operation is complicated, and there is a problem that the rubber cannot be used in an atmosphere of an organic solvent because it may deteriorate in quality. Furthermore, although fixing devices such as clips utilize the force of springs, in automatic synthesis apparatuses, the inside of the piping system may become pressurized when transporting liquid. However, a clip that can sufficiently withstand this pressure is large and unsuitable as a device component. Further, when using a commercially available disposable tube or the like, a fixation structure using horns or the like is often not expected to serve as the intended fixation device. Alternatively, if a hot fluid passes through a part where materials with different coefficients of thermal expansion are joined, such as a glassware and a commercially available tube made of vinyl chloride, or if the glassware is heated, gas may escape from the joint. This may cause problems such as leakage or the joint coming off when the inside becomes pressurized. In addition, when used in intravenous drug automatic synthesis equipment, etc.
Since the system must be kept sterile and pyrogen-free, these fixtures must be able to be attached and detached while the piping material is joined.

[Purpose of invention]

This idea was devised in view of the above-mentioned problems, and its purpose is to connect materials with different coefficients of thermal expansion, such as glassware and vinyl chloride tubes, when used under conditions that involve temperature changes. To provide a fixture that can maintain the bonding force of a joint part due to fitting, and can be attached and detached with the joint part joined, such as when using the same material under pressure. It is in.

[Means for solving problems]

That is, in order to achieve the above-mentioned object, this invention fits a tube provided with a protrusion into a flanged container protrusion with an open end, and in a fixture for joining the protrusion and the tube, a protrusion-side fixing tool is used. A male or female screw with a split shape that matches the flange is used, and one end of the tube side fixture is a male or female screw that is screwed into the thread of the protrusion side fixture, and the other end is a male or female screw with a split shape that matches the flange. It is characterized by a split shape that matches the protrusion of the tube.

In addition, instead of splitting the fixing device having a male screw on the protrusion side or tube side of the above-mentioned fitting and joining fixing device, the entire fixing device may be split vertically into two, or alternatively, one of the protrusion side or tube side fixing devices may be split into two lengthwise. Alternatively, it is characterized by using plastic packing for both.

[Effect]

With the protruding part of the container and the tube fitted and connected by the male and female shapes, the split part of the male screw fixing device that matches the shape is fitted into the protruding part, and this is attached to the tube. It becomes possible to install by fitting a split female screw that matches the shape. If the male and female screws are screwed together, even if materials with different coefficients of thermal expansion are joined or the piping system is pressurized, the joining force at the joint between the protrusion of the container and the tube will be reduced. can be maintained. Furthermore, as the screws are tightened, the joining force becomes stronger and this state can be maintained.

The same effect can be obtained by fitting a female screw into the protrusion and a male screw into the tube. The same thing can be done when the fixing device on the side having the male screw is split vertically into two instead of being split, but in this case, the joining force is stronger as the screws are cut around the entire circumference. Furthermore, if a plastic packing is used for one or both of the male and female screws, the tightening force will be increased.

〔Example〕

Specific embodiments of this invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a female screw fixing device provided with a split shape, and FIG. 2 shows an example of a male screw fixing device provided with a split shape and screwed into the female screw fixing device. Moreover, FIG. 3 is an embodiment diagram in which the male screw fixing device is divided vertically into two parts instead of being split.

FIGS. 5 and 6 show the state of joining and the joint portion fixed when this fixture is used.

The protrusion of the glass container 10 may be a female protrusion 1 as shown in FIG. 5, or a male protrusion 6 as shown in FIG. A flange 8 is provided on the protrusion. A commercially available tube (the tube is provided with a protrusion 11) is connected to this protrusion.
The tube to be joined is a male tube 2 when the protrusion is a female protrusion 1, and a female tube 7 when the protrusion is a male protrusion 6. Therefore, these joining means 1 and 2 or 6
and 7, the male screw fixing device 4 is attached to the female protrusion 1 or the male protrusion 6, and the female screw fixing device 5 is attached to the male tube 2 or the female tube 7. In this case, the male screw fixing device 4 has a split shape 4A as shown in FIG. 2 so that it can be attached to the female projection 1 or the male projection 6 with the joints connected. , the female screw fixing device 5 is also divided into a split shape 5A as shown in FIG. 1 so that it can be attached to the male tube 2 or the female tube 7.
It has a structure with Alternatively, instead of providing the split shape 4A for the fixture having a male screw, the entire fixture may be split into two as shown in FIG. That is, when fitting it into the protrusion 1 or the protrusion 6, it is sufficient to match the split pieces 4B and 4B and screw the female screw together in the matched state. In this case, since the screws are cut around the entire circumference, the joining force will be that much stronger.

However, by screwing together the female screw fixing device 4 and the male screw fixing device 5 attached in this way, the female protrusion 1 and the male tube 2 or the male protrusion 6 and the female tube 7 are fitted and connected. By pressing in the direction of fitting, it is possible to increase the resistance force against the force in the direction of uncoupling due to temperature changes or increases in internal pressure. In addition, as shown in FIG. 4, if a split gasket 3 made of a plastic material such as silicone is attached to the female screw fixing device 5, a larger bonding force can be maintained and environmental resistance can be increased. You can get sex.

Although the details of this invention are as described above, it is needless to say that it is not limited to the illustrated example, and that various modifications can be made within the same scope as a creation of technical ideas. For example, the shapes of the fixing devices 4 and 5 can be changed into various shapes to suit the shape of the joint, and the material can be metal, resin, glass, etc. as long as it has the strength necessary to fix the joint. No matter the type. In addition, in the illustrated example, the fixing device attached to the protrusion of the container is a male screw fixing device, and the fixing device attached to the tube is a female screw fixing device, but the reverse may be used as shown in Fig. 7. . Since the glass container can be manufactured into any shape, the glass container itself may have a threaded shape. In addition, the packing is a male screw fixing device,
It may be attached to either or both of the female screw fixing devices, and the material may be made of any plastic material.

[Effect of idea]

As described in detail above, in order to maintain the bonding force of the joint when the protrusion of the container and the tube are joined, the male screw fixing device and the female screw fixing device are split or fixed with a male screw. The fixture has a two-part structure and is attached to the protrusion and tube, and these fixtures are screwed together, making it suitable for equipment that operates under dangerous conditions, such as an automatic RI-labeled chemical synthesis equipment. However, it is possible to avoid a situation where the fastened part of the piping loosens or comes off, which would directly lead to the termination of synthesis. In addition, in intravenous drug synthesis equipment such as _{the U18} F-labeled fluorodeoxyglucose automatic synthesis equipment, usable piping materials and fastening types are limited, but the fixing device according to this invention described above can be used. This makes it possible to provide an automatic synthesis device with good reproducibility using existing piping materials and the like.

[Brief explanation of the drawing]

FIG. 1 is an example of a female screw fixing device with a split shape, FIG. 2 is an example of a male screw fixing device with a split shape, and FIG. 3 is an example of the male screw fixing device of FIG. 2. A male screw fixing device that is split into two parts instead of having a split fixing device.
FIG. 4 is an embodiment of the packing. Figure 5 is an example of a fixing device for a joint when the protrusion is female and the tube is male, and Figure 6 is a fixture for a joint when the protrusion is male and the tube is female. Embodiment Figure 7 is an embodiment diagram in which the fixture 4 is a female screw and the fixture 5 is a male screw. 1...Female protrusion, 2...Male tube,
3...Putskin, 4...Male screw fixing device, 5...Female screw fixing device, 6...Male protrusion, 7...Female tube, 8...Protrusion flange.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a fixture for fitting a tube with a protrusion into a flanged container protrusion with an open end and joining the protrusion to the tube, the protrusion-side fixture is attached to the flange. The tube-side fixing device should be a male or female screw with a split shape of a matching shape, and one end of the tube-side fixing device should be a male or female screw that screws into the thread of the protrusion-side fixing device, and the other end of the tube-side fixing device should be a male or female screw with a split section of a matching shape. A fitting joint fixture characterized by having a split shape that matches the protrusion. (2) The fitting joint fixing device according to claim 1 of the utility model registration claim, in which the fixing device having a male screw on the protrusion side or the tube side is divided into two vertically instead of being split. (3) The fitting joint fixing device according to claim 1, which is characterized in that a plastic packing is used on one or both of the protrusion side and tube side fixing devices.