JPH049513Y2 - - Google Patents

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention is a pipe connection device for physical and chemical equipment, which not only fixes the pipe but also connects the pipe to the through hole of the connection base to prevent fluid from leaking.

b. Prior Art Conventionally, this type of pipe connection involves connecting a pipe and passing it through the pipe by bringing a contact body whose volume is slightly deformed by pressure into close contact with the outer peripheral surface of the pipe inserted into the connection part. Although attempts are made to prevent fluid leakage, the conventional contact body deformation alone results in unstable adhesion to the outer circumferential surface of the pipe, and the small gaps cause slight movement of the pipe itself and fluid leakage at the connection. It was hot.

c Problems to be solved by the invention The invention eliminates all fluid leakage at the joints of pipes that conventionally carry various chemical fluids, and only requires adjustment of the screws 1b and 2a of the connection base 1 and the pressure screw 2. In addition, the structure is such that the pipe itself is fixed.

d Means for solving the problem When connecting the pipe 3 to the through hole 1a of the connection base 1, the funnel part 2b formed on the inner diameter of the pressing screw 2
The press screw 2
As a result of the screwing of the ferrule 4, the deformation of the ferrule 4 increases the pressing force on the outer surface of the pipe 3 at its inner diameter. The ratio of the through hole 1a of the connecting base 1 is 1:1, and there is no leakage of fluid at the connecting portion.

e Example An example of the present invention will be explained with reference to the drawings.
When connecting the pipe 3 inward from the opening of the through hole 1a provided in the axis of the connection base 1, the pipe 3
is made of stainless steel, hard resin, glass, etc. depending on the type of fluid passing through the inside, and the base 1 and other parts are also made of stainless steel or hard resin depending on the type of chemical fluid to be used. The ferrule 4 itself is made of hard resin, and the ferrule 4 is deformed when the funnel part 2b, which is the inner diameter of the pressing screw 2, is coupled to the pressure receiving inclined surface 4a, and the ferrule 4 is deformed, and its inner diameter becomes the same as that of the pipe 3. Due to the deformation occurring inside the ring 5, the ferrule 4 increases the pressure on the outside surface of the pipe 3 to fix it, and the through hole 1a of the base body 1 and the pipe 3 :1 not only allows fluid to pass through without stagnation, but also prevents fluid from leaking at the connection.

f Function The present invention relates to the connection of the pipe 3 to the through hole 1a of the connection base 1, and the threading of the pressing screw 2 and the ring 5
The deformation of the ferrule 4 inserted therein increases the pressure applied to the outer surface of the pipe 3, fixing it and eliminating any leakage of fluid from the connection part of the pipe 3, making it possible to connect and disassemble with only the pressure screw 2. This is a configuration designed to perform the following.

g. Effects of the invention The present invention realizes leak-free connection of pipes 3 that conduct various fluids in laboratory equipment using an extremely simple ferrule and ring configuration, and also has a simple structure and is easy to repair and replace. It has practical effects and can be provided easily and inexpensively.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a vertical sectional view taken along line X-Y in FIG. 1, and FIG. 3 is a side view of various parts of the invention. Explanation of symbols, 1... Connection base, 1a... Through hole,
1b...Inward screw, 2...Press screw, 2a...Outer circumferential screw, 2b...Funnel part, 3...Pipe, 4...
Ferrule, 4a...Pressure receiving inclined surface, 5...Ring.

Claims (1)

[Claims for Utility Model Registration] A ferrule 4 is interposed between the through hole 1a of the connection base 1 and the circumferential surface of the pipe 3 fitted into the through hole 1a, and the ferrule 4
The funnel part 2b inside the pressing screw 2 is joined to the pressure inclined surface 4a formed at the tip of the ferrule 4, and the ring 5 is wound around the outer periphery of the ferrule 4. A pipe connection device for scientific equipment in which the inner diameters of the pipes 3 to be joined to the pipes 3 are made the same, and the outer circumferential threads 2a of the pressing screw 2 and the inward threads 1b of the connection base 1 mesh with each other.