JPS6318632Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure relief device for a viscous fluid passageway, particularly to a pressure relief device provided in a viscous fluid metering discharge device.

The pressure relief device of the present invention includes a container-shaped distributor inserted in a viscous fluid passage between a viscous fluid metering device and a viscous fluid output pipe, and a desired stroke airtight after stopping the pressurized supply of the viscous fluid in the distributor. was pulled out by
It is characterized by comprising a rod that is hermetically inserted with a desired stroke before the start of feeding.

Embodiments of the device of the present invention will be described below with reference to the drawings.

FIG. 1 shows a viscous fluid dispensing device in which viscous fluid is supplied from a supply pump 1 connected to a viscous fluid source (not shown) via a hose or pipe 2 to a metering device 3 (e.g. In addition to the dynamic shot pump), a fixed amount of viscous fluid is intermittently added to the container-shaped distributor 5 via a hose or piping 4 several meters in length by the metering device 3. For example, 30 discharge pipes 6 made of copper or the like, each having the same length and inner diameter, for example, about 50 cm in length and about 6 to 12 mm in inner diameter, are connected to each other.
The open end of the opening end is brought close to the adherend 7.

In such a viscous fluid metering dispensing device, the resistance of the discharging pipe 6 is large, so the metering device 3
Even if the supply of viscous fluid from the discharge pipe 6 is stopped, residual pressure is generated in the viscous fluid, and the viscous fluid continues to drip from the tip of the discharge pipe 6, which has the drawback that prompt work cannot be performed.

In order to eliminate such drawbacks in the device of the present invention, a pressure relief device 8 is connected to, for example, the distributor 5 of the viscous fluid metering dispensing device, so that the pressure inside the distributor 5 can be removed.

As shown in FIG. 2, the pressure relief device 8 of the present invention includes an air cylinder 9, a piston 10 inside the air cylinder 9, and a piston 10 that is connected to the piston 10 and airtightly extends outward from the bottom wall of the air cylinder 9. A piston rod 11 that protrudes and whose tip is hermetically inserted into the distributor 5, and a stroke limiting rod 1 that is hermetically screwed onto the upper bottom wall of the air cylinder 9 so as to protrude from the upper bottom wall into the air cylinder 9.
2, a handle 13 for defining the position of the limiting rod 12, and a spacer rod 14 inserted between the lower bottom wall of the air cylinder 9 and the distributor 5.
It is composed of:

Since the device of the present invention has the above-mentioned configuration, the air cylinder 9 of the pressure relief device 8 is activated to open the piston rod 11, for example, 2 to 5 seconds after the supply of viscous fluid from the metering device 3 is stopped using a timer or the like. When the piston rod 11 is pulled out from the distributor 5 by a certain stroke, the space inside the distributor 5 expands by the volume of the piston rod 11 that has been pulled out, thereby reducing the pressure of the viscous fluid inside the distributor 5, and the discharge pipe 6
The discharge of viscous fluid immediately stops.

In the device of the present invention, when the supply of viscous fluid from the metering device 3 is started again, the air cylinder 9 of the pressure relief device 8 is operated at the same time, and the piston rod 11 is moved into the distributor 5 by the previously drawn stroke. Force it to be inserted.

This stroke can be adjusted as desired by turning the handle 13.

As described above, according to the device of the present invention, the discharge pipe 6
It is possible to prevent discharge due to residual pressure from occurring, which has the great advantage of speeding up the work.

In the device of the present invention, there is a sufficient gap between the air cylinder 9 and the distributor 5 due to the spacer rod 14, so in the unlikely event that the piston rod 1 is removed from the distributor 5.
Even if the viscous fluid leaks to the outside through the outer periphery of the air cylinder 1, the leaked viscous fluid will not enter the air cylinder 9 and the air cylinder 9 can be protected.

The device of the present invention is not limited to the above-mentioned embodiments and can be modified in various ways. That is, for example, instead of using an air cylinder and piston, a manual rod insertion mechanism may be used, or other mechanical rod insertion mechanisms may of course be used.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the viscous fluid metering discharge device, Figure 2
The figure is an explanatory diagram of the device of the present invention. 1... Supply pump, 2... Hose or piping, 3
...Measuring device, 4...Hose or piping, 5...Distributor, 6...Discharge pipe, 7...Adherent object, 8...
...Pressure relief device, 9...Air cylinder, 10...Piston, 11...Piston rod, 12...Stroke limit rod, 13...Handle, 14...
Spacer rod.

Claims (1)

[Scope of utility model registration request] A container-shaped distributor is inserted in a viscous fluid passage between a viscous fluid metering device and a viscous fluid discharge pipe, and the viscous fluid is pulled out airtightly for a desired stroke after the pressurized supply of the viscous fluid is stopped and before the supply starts. A pressure relief device for a viscous fluid passage, characterized in that it comprises a rod that is hermetically inserted into a desired stroke.