JPH03265795A - Pipe connecting device for highly pure chemical carriage - Google Patents

Abstract

PURPOSE:To prevent mixing of dust into highly pure chemical by providing a flange part of a cleaning room with a male coupler insertion port, and provid ing a movable plate, which fixes and holds a male coupler, an injection nozzle for cleaning liquid and drying gas, a waste liquid pipe, and an air discharge pipe. CONSTITUTION:A female coupler 2 is installed at the center of the mobile part of an air cylinder 1, and a pressurizing chamber 14 and a cleaning chamber 3 are made. The cleaning chamber is provided with an injection nozzle for supplying cleaning liquid for cleaning each top of a female coupler 2 and a male coupler 2', a waste liquid pipe 10', and an air discharge pipe 10. The periphery 11 of the top of the female coupler 2 is in the shape of forming a tapered face in the direction of the male coupler 2', and the surface is provided with a proper number of radial grooves toward the center axis. The flange part 6, which has an insertion hole for the male coupler 2', is provided with a mobile plate 8 so that it may fix and hold the coupler after insertion of the male coupler 2' and that it may close the insertion hole after removable of the coupler.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to the transfer of high-purity chemical solutions, for example, from a production factory storage tank to a container or tank lorry of a transport truck, or from a container or tank lorry of a transport truck. The present invention provides a transfer pipe connection device that is useful when transferring chemical solutions from - to a chemical solution receiving tank.

[Background Art] In recent years, the work of filtering and supplying liquid substances containing fine solid particles as impurities has become extremely important in various technical fields. In other words, in the inorganic chemical industry, organic chemical industry, food industry, pharmaceutical industry, microbial chemical industry, fermentation industry, electronic industry, etc., fine solid particles contained in various drugs, foods, and other liquid materials are treated as so-called dust ( The task of removing contaminants (solid particles) occupies an important position.

In particular, in addition to removing contaminant solid particles from the liquid material itself, when transporting such liquid material into the clean working room provided for each technical field, the container used for transport is Or, the cleaning process for the equipment becomes quite complicated, and the equipment required for the cleaning process,
Reducing costs and working time has become an important issue to be solved in various technical fields.

Conventionally, one of the methods used to transfer and supply so-called dust-free liquid substances is to connect the supply pipe from the storage tank of the production plant to the receiving pipe on the transport container or tank truck side, or Further, a supply pipe from the transport container or tank truck side is connected to a receiving pipe of a chemical liquid receiving tank on the user side. When making these connections, the tips of the supply-side pipe and the receiving-side pipe may be made male (male coupler) and the other female (female coupler), and then manually joined. Alternatively, joints such as unions and flanges are used, and connections are made using screws or bolts and nuts.

[Objective of the Invention] An object of the present invention is to remove dust attached to the tip of the coupler and its surrounding area when connecting the tip of the pipe used for transferring and supplying a dust-free liquid substance as described above. , to prevent dust from entering the high-purity chemical solution, by cleaning and removing the pipe immediately before connecting it and drying the relevant area.
The object of the present invention is to provide an extremely convenient connection device.

[Disclosure of the Invention] The present invention provides a pipe connection device for transferring high-purity chemical liquid as described below as a device for achieving the above-mentioned object.

An air cylinder 1 with a female coupler 2 equipped with a valve mechanism attached to the center of the air cylinder movable part and a cleaning chamber 3, and restoration in which the pressure is reduced and the connected coupler is separated after the coupler connection and high purity chemical supply work are completed. A pipe connection device for transferring high-purity chemical liquids having a device 4, a flange portion 6 constituting a part of the cleaning chamber is provided with a male coupler insertion port 7, and a valve is provided in the flange portion 6. A movable plate 8 is provided, which is shaped to fix and hold the male coupler 2 equipped with a mechanism after it is inserted, and close the insertion opening after the male coupler is removed. A pipe connection device for transferring a high purity chemical liquid, characterized in that a cleaning liquid and drying gas injection nozzle 9, a drain pipe 10'' and an exhaust pipe 10 are provided in the pipe connection device 3.

Further, in the present invention, the peripheral part 11 of the female coupler has a tapered shape that is wide in the direction of the male coupler, and the tapered surface of the peripheral part has an air cylinder movable part centered on the peripheral part 11. The present invention provides a pipe connection device for transferring high-purity chemical liquids in which grooves 12 are formed radially with respect to the axis.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The pipe connection device for transferring high-purity chemical liquids according to the present invention will be explained in detail below with reference to the drawings and FIGS. 1 to 3.

As shown in FIG. 1, a female coupler 2 equipped with a valve i structure (not shown) is attached to the center of the movable part of the air cylinder 1.
4 and a cleaning chamber 3 are formed, and the cleaning chamber includes an injection nozzle 9 for supplying cleaning liquid and drying gas for cleaning the respective tips of the female coupler 2 and the male coupler 2°, and a discharge liquid. A pipe 10'', an exhaust pipe 10 are provided, and an appropriate number of protrusions 15 are provided for adjusting the stroke of the air cylinder so that no extra force is applied to the coupler body when connecting the double-edged puller toward the air cylinder. A flange portion 6 having an insertion opening 7 for a male coupler 2'' having a valve m structure (not shown) in the center thereof is integrally attached with the spray ring 13 sandwiched therebetween. The air cylinder 1 is also equipped with a restoring device 4 using a spring, and a mounting frame 5.
installed on.

The peripheral part 11 of the tip of the female coupler 2 has a shape that forms a tapered surface toward the direction of the male coupler 2, and as shown in FIG. A suitable number of channels 12 are provided radially.

Furthermore, the flange portion 6 having the insertion opening for the male coupler 2' is provided with the male coupler 2' after the male coupler 2' is inserted, as shown in the actual capacity vg diagrams in Figures 2^) to C). is fixedly held, and on the other hand, after the coupler is removed, the insertion port 7 is
A movable plate 8 is provided to close the opening.

As shown in the figure, sealing means using O-rings are provided at necessary locations.

Next, the mode of operation of this device will be explained.

The movable plate 8 is opened, and the male coupler 2° is inserted into the insertion opening 7 of the flange portion 6 attached to the cleaning chamber 3 up to just before the tip of the female coupler 2, and is fixedly held by the movable plate 8. A pressurized cleaning liquid is sprayed from the spray nozzle 9 of the spray ring 13 toward the tips of the two-way pullers 2, 2° and their surrounding areas to clean the surface of each coupler. 6 After cleaning, the sewage liquid is drained into the drain pipe 10°. is discharged to the outside through the After cleaning, drying residue (nitrogen gas, etc.) is similarly injected from the injection nozzle to dry the cleaned area. The drying gas is exhausted from the exhaust pipe 10.

Next, operate the air cylinder by sending air or nitrogen gas into the pressurized chamber 14 of the air cylinder, connect the female coupler 2 to the male coupler 2°, and connect the double-force puller to create a dust-free The supply of high-purity chemical liquid becomes possible, and the chemical liquid is supplied.

When the supply of the chemical solution is completed, the automatic valve operates to release the gas for the pressurized chamber, and the restoring device 4 returns the female coupler 2 to the position before connection. At this time, at the same time as the coupler is disconnected, the valve m structure inside the double-force puller operates to prevent fluid from flowing inside the pipe and dust from entering from the outside.

After that, as in the case before connection, cleaning water or nitrogen gas is jetted from the jet nozzle, and cleaning and drying are repeated.

Finally, after opening the movable plate 8 and completely removing the male coupler 2', the cleaning chamber is closed by the movable plate 8 which fixedly held the male coupler, and the supplying operation is completed.

[Effects of the present invention] The device according to the present invention allows cleaning to be carried out efficiently by the injection nozzle of the spray ring and the tapered surface with radial grooves on the inner surface provided at the tip of the air cylinder. Adhering dust is completely removed, and the time required to supply dust-free chemicals from the storage tank to the transport truck container or from the transport truck container to the storage tank is significantly reduced. The tip of the power puller is washed repeatedly.

Further, since the movable plate 8 is provided, the male coupler is fixedly held and the insertion opening is closed efficiently by this plate.

[Brief explanation of drawings]

Figure 1 is a partial sectional view of the pipe connection device for transferring high-purity chemical liquids according to the present invention, B) and C) are front views showing the operating state of the movable plate, and ^) is a male coupler. Figure 3 shows the state when the male coupler is removed, B) shows the state just before the male coupler is installed, and C) shows the male coupler installed and fixed. ) is a partial sectional view and a front view of the tapered surface of the air cylinder. 1...Air cylinder, 2...Female coupler 2
°...Male coupler, 3...Cleaning chamber, 4...Restorer, 5...Mounting frame, 6...Flange 1.7.
...Male coupler insertion port, 8...Movable plate, 9
... Injection nozzle, 10゛ ... Drain pipe, 10 ... Exhaust pipe, 11 ... Peripheral part, 12 ... Clearance, 13 ... Spray ring, 14 ... Pressure chamber, 15...Protrusion 6 0 JP-A-3 265795 (5)

Claims (1)

[Claims] 1) An air cylinder 1 with a female coupler 2 equipped with a valve mechanism attached to the center of the movable part of the air cylinder and a cleaning chamber 3, and after the coupler is connected and the high-purity chemical solution supply work is completed, the pressure is reduced. This is a pipe connection device for transferring a high-purity chemical liquid, which has a restoring device 4 for separating a connected coupler, and a male coupler insertion port 7 is provided in a flange portion 6 constituting a part of the washing chamber. , this flange portion 6 has
A movable plate 8 is provided, which is shaped to fix and hold the male coupler 2' having a valve mechanism after it is inserted, and close the insertion opening after the male coupler is removed. A pipe connection device for transferring a high-purity chemical liquid, characterized in that a cleaning chamber 3 is provided with an injection nozzle 9 for cleaning liquid and drying gas, a drain pipe 10', and an exhaust pipe 10. 2) the female coupler peripheral portion 11 has a shape that tapers toward the male coupler;
2. The pipe connection device for transferring a high-purity chemical liquid according to claim 1, wherein a groove 12 is formed radially with respect to the central axis of the air cylinder movable portion on the tapered surface of the peripheral portion thereof.