JPS6212117B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid filling device.

Conventionally, when filling a container with liquid, a solenoid valve in a pipe connecting a liquid tank and a nozzle is opened and closed, and the liquid drips due to water hammer generated when the solenoid valve is closed.

As a result, there were disadvantages such as contaminating the area around the filling device and the container, and not being able to fill a fixed amount of liquid.

Furthermore, since the pressure of the liquid flowing down varies depending on the level of the liquid level in the tank, there is also a drawback that the filling amount varies slightly.

In view of the above points, this invention eliminates dripping of liquid, and eliminates fluctuations in the pressure of flowing liquid.
The object of the present invention is to provide a device that can perform quantitative filling.

In this invention, the liquid level in the tank is always kept constant, and a water hammer absorption device is provided to improve the drainage of the liquid.

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

In the figure, 1 is a tank whose liquid level is always constant.

In order to maintain a constant liquid level in the tank 1, as shown in the figure, the auxiliary tank 2 and the bottom of the tank 1 are connected by a pipe 4 that has a pump 3 in continuous operation, and the upper end is connected to the liquid level setting position of the tank 1. This is carried out by an overflow pipe 5 whose lower end faces into the auxiliary tank 2.

Further, a nozzle A is connected to the tip of a liquid supply pipe 6 extending from the bottom of the tank 1.

The above-mentioned nozzle A consists of an outer cylinder 7 with a closed upper end to which a liquid supply pipe 6 is connected to the lower peripheral surface, an inner cylinder 8 assembled into the outer cylinder 7 with a passage gap provided at the upper end and outer periphery, and an outer cylinder 8. The lower end of the cylinder 7 is closed, and the injection port cylinder 9 is provided in communication with the lower end of the inner cylinder 8.

Further, the liquid supply pipe 6 on the front side of the nozzle A is provided with a water hammer absorption device B.

In the illustrated case, this absorption device B includes a cylindrical body 10 whose lower end is connected to a liquid supply pipe 6, a valve seat 11 provided in the cylindrical body 10, and a valve that is pressed against the valve seat 11 by a spring 12. A pipe 1 connects the cylindrical body 10 and the auxiliary tank 2 above the body 13 and the valve body 13.
It consists of 4.

Further, the liquid supply pipe 6 in front of the absorption device B is provided with a valve 15 of an electromagnetic type or the like.

The above-mentioned valve 15 is set to open for a certain period of time by a timer when the container a is set in the injection port tube 9 and a switch is turned on.

Incidentally, the surface tension can be increased by setting a net on the injection port cylinder 9 as shown in the figure.

The liquid filling device according to the present invention has the above-mentioned configuration, and its operation will be explained next. By continuous operation of the pump 3, liquid is supplied from the auxiliary tank 2 to the tank 1 through the pipe 4, and the liquid is supplied to the tank 1 through the pipe 4. 1 through the overflow pipe 5 to the auxiliary tank 4, so that the tank 1
The liquid level inside is always constant.

Next, set container a directly under nozzle A,
When the valve 15 is opened, the liquid in the tank 1 flows through the pipe 6, the gap between the inner periphery of the outer cylinder 7 and the outer periphery of the inner cylinder 8,
The liquid passes through the upper end of the inner cylinder 8 toward the injection port cylinder 9, and is filled into the above-mentioned container a.

Then, the valve 15 is closed after a set time.

At this time, the water hammer generated pushes up the valve body 13 that constitutes the absorption device B, and the valve seat 1
1 is opened, liquid flows into the cylindrical body 10 from the valve seat 11, and the inflow liquid flows into the pipe 1.
4 and head towards the auxiliary tank 2.

Therefore, a slight vacuum is created in the upper part of the outer cylinder 7 constituting the nozzle A, and the liquid in the injection port cylinder 9 is pulled by the negative pressure, thereby ensuring reliable liquid drainage.

As described above, according to the liquid filling device according to the present invention, the upper end closed outer cylinder is installed at the tip of the liquid supply pipe connected to the tank, and the outer cylinder is installed so that the upper end and the outside of the peripheral wall form a passage. The lower part of the outer cylinder of the nozzle is composed of an inner cylinder and an inlet cylinder which closes the lower end of the outer cylinder and communicates with the lower end of the inner cylinder. A cylindrical body having a pipe whose lower end communicates with the supply pipe and through which liquid flows into the auxiliary tank from the upper end, a valve seat provided at the lower part of this cylindrical body, and a pressure contact with the valve seat by a downward pressing force. In addition, in front of this absorption device, a valve is installed in the liquid supply pipe that opens for a set time during operation, so that the problem occurs when the valve is closed. The water hammer is absorbed by the above absorption device.

That is, the valve body is pushed up and liquid flows from the pipe through the valve seat and into the cylindrical body.

Therefore, the inside of the upper part of the outer cylinder of the nozzle is in a vacuum state, and the liquid inside the injection port cylinder is drawn in by the negative pressure, thereby making it possible to reliably drain the liquid.

In addition, the liquid is constantly supplied from the auxiliary tank to the tank, and the liquid level in the tank is always kept constant by overflowing from the above tank to the auxiliary tank, so the pressure applied from the tank to the liquid supply pipe is constant. .

Therefore, the pressure on the nozzle side can be kept constant, and the flow rate can be kept unchanged to perform quantitative filling.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a device according to the present invention, and FIG. 2 is an enlarged vertical side view showing the main parts of the same. A... Nozzle, B... Absorption device, 1... Tank, 2... Auxiliary tank, 3... Pump, 4... Pipe, 5... Overflow pipe, 6... Liquid supply pipe, 7... Outside Cylinder, 8...Inner cylinder, 9...Inlet cylinder,
10... Cylindrical body, 11... Valve seat, 12... Spring,
13...valve body, 14...pipe, 15...valve.

Claims (1)

[Claims] 1.Always supply liquid from the auxiliary tank, and
A tank that overflows to the auxiliary tank to reach the set liquid level, a liquid supply pipe that continues from the bottom of this tank, an upper end closed outer cylinder whose lower part is connected to the tip of this liquid supply pipe in a communication manner, and this outer cylinder. The inner cylinder is assembled so that the passage is formed directly above the upper end and the outside of the peripheral wall, and the lower end of the outer cylinder is closed,
a nozzle composed of an inlet cylinder communicating with the lower end of an inner cylinder; a cylindrical body having a lower end communicating with a liquid supply pipe in front of the nozzle and connecting the upper end and an auxiliary tank with a pipe; A water hammer absorption device consists of a valve seat provided at the bottom of this cylindrical body, a valve body that presses against this valve seat with a downward pressure force, and a liquid supply pipe is connected to the liquid supply pipe in front of this absorption device for a set time during operation. A liquid filling device consisting of a valve that is set to open.