JPS609192Y2 - liquid filling valve - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to improvements in liquid filling valves.

Fig. 1 is a partial cross-sectional view showing an example of a conventional one, in which 1 is a liquid tank, 2 is a filling valve attached to the liquid tank, and the filling valve 2 is a valve body 3 fixed to the liquid tank 1; A sliding tube 4 having a flange 4a, a hole 4b and a φ ring 5 slidably mounted therein, a spring 6 interposed between the sliding tube 4 and the main body 3, and a centering ring attached to the sliding tube 4. It consists of a guide 7, a sealing member 8 for the mouth of the container, an air conduit 9 which is supported by a spring at all times with respect to the waist main body 3 that opens in the space above the liquid level of the liquid tank 1, and is connected to the liquid tank 1. A predetermined number of them are attached at equal pitches around the outer circumference.

10 is a piston fixed to the liquid tank 1 between the filling valves 2; 11 is slidably attached to the piston 10;
This cylinder has a flange lla on its outer periphery that engages with the flange 4a of the sliding cylinder 4 of the filling valve 2. When cleaning the filling valve 2, pressure fluid is supplied into the cylinder 11 from a pressure supply source (not shown), and the cylinder 11 By raising the sliding cylinder 4 of the filling valve 2, the cleaning liquid supplied in the liquid tank 1 is caused to flow down from the liquid flow passage and the air conduit to clean the filling valve.

However, in the above configuration, since a cleaning piston and cylinder are installed between the filling valves, the mounting pitch of the filling valves becomes large, which results in an increase in the size of the filling machine and the need for small-capacity containers. However, there were various problems in that it was not possible to reduce the mounting pitch of the filling valves, and it was not possible to increase the capacity by increasing the number of filling valves installed even in a filling machine of the same size.

The present invention was proposed in view of the above-mentioned points, and includes a valve body that hangs down in communication with a liquid tank, and a sliding valve that is installed so as to be slidable in the vertical direction into the valve body and whose lower end protrudes from the valve body. A liquid-filled valve having a tube and a centering guide attached to the lower end of the sliding tube, which includes a flange formed on the outer periphery of the valve body, and a flange that surrounds the valve body and is attached to be movable up and down. It is characterized by comprising a cylinder member that forms a pressure chamber between the upper surface of the flange and the outer periphery of the valve body, and a connecting member that connects the cylinder and the sliding tube, and its purpose is to: The filling valve can be cleaned without providing a cleaning piston and cylinder like the conventional ones, and the mounting pitch of the filling valves can be made smaller, making the filling machine more compact or increasing the number of filling valves installed. The present invention seeks to provide a liquid-filling valve that makes it possible.

Since the present invention is configured as described above, when pressure fluid is supplied to the pressure chamber during cleaning, the pressure chamber expands and the cylinder member rises.

The sliding tube is connected to the cylinder via a connecting member, and the sliding tube also rises to open the filling valve, allowing cleaning liquid to flow down and cleaning the filling valve.

Therefore, it is no longer necessary to provide a cleaning piston and cylinder between the filling valves as in conventional ones, and the installation pitch of the filling valves can be reduced, making the filling machine more compact or increasing the number of filling valves installed. becomes possible.

An embodiment of the present invention will be described below with reference to FIG.

20 is a liquid tank, 21 is a filling valve main body fixed to the tank 20, and a flange portion 21a is formed on the outer periphery of the lower part.

22 is a cylinder slidably attached to the valve body 21, and a spring 2 is installed between the cylinder 22 and the valve body 21.
3 is interposed.

24 is a pressure chamber formed between the outer circumferential surface of the valve body 21 and the upper surface of the collar portion 21a and the cylinder 22, and is connected to a pressure supply source (not shown) via a supply port 25, piping, etc. .

26 is an air conduit, 27 is a sliding tube with a hole 27a, and a flange 27.
b and a φ ring 28.

29 is a spring interposed between the sliding tube 27 and the valve body 21; 30 is a container centering guide having a flange 30a1 to which the container mouth sealing member 31 is attached and a discharge port 30b; is slidably attached to.

32 is a spacer, 33 is a cleaning cap hooking groove 33a
It has a seal packing 34 and is detachably attached to a pin 35 provided in the cylinder 22 via a groove 33a.

This cap 33 is attached as shown in the figure when cleaning the filling valve, and a cleaning liquid circulation path having a pump, a cleaning liquid tank, etc. is connected to the outlet 31b provided in the centering guide 30 during cleaning. Together with the pin 35 and the seal packing 34, it constitutes a connecting member.

In the above configuration, when the container is filled with liquid, the cleaning cap 33 is removed, pressure fluid is not supplied to the pressure chamber 24, and the centering guide 30 is
Then, the sliding cylinder 27 is pushed up and filled with liquid.

On the other hand, after the filling operation is completed and the liquid in the tank 20 is recovered, a cleaning cap is attached as shown, the tank 1 is filled with the cleaning liquid, and the pressure chamber 24 is further supplied with pressure fluid.

When pressure fluid is supplied to the pressure chamber 24, the cylinder 22 rises against the spring 23, and along with this, the cleaning cap 33, the centering guide 30°, and the spacer 32 rise, and the spacer 32 slides. It hits the moving tube 27, and the sliding tube 27 also hits the spring 2.
It is raised against 9.

As a result, the φ ring 28 separates from the valve body 21, the cleaning liquid in the tank flows down in the liquid flow passage, joins with the cleaning liquid flowing down in the air conduit 26 in the cap 33, and circulates connected to the discharge port 31b. It can be circulated by a pump through the channel to clean the filling valve.

Therefore, it is no longer necessary to provide a cleaning piston and cylinder between adjacent filling valves, as in the conventional type, and it is possible to reduce the mounting pitch of the filling valves to the liquid tank.

In the above embodiment, the cleaning cap 3 is attached to the cylinder 22.
3 is attached to circulate the cleaning liquid, and the centering guide and sliding tube are raised through the cap 33, and the filling valve is opened to allow the cleaning liquid in the tank to flow down. If the cleaning liquid is not used and the cleaning liquid is discharged to the outside from the filling valve, the third
As shown in the figure, the cylinder 22 and the centering guide 3° may be connected via the pin 36, and as the cylinder 22 rises, the centering guide 30 rises, the filling valve is opened, and the cleaning liquid inside the tank flows down for cleaning. I can do that.

Even if the cylinder and the centering guide are connected as described above, there is no problem since no pressure fluid is supplied to the pressure chamber 24 when the container is filled with liquid, and the pin 36 may be made detachable if necessary.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing a conventional device, FIG. 2 is a sectional view showing one embodiment of the present invention, and FIG. 3 is a sectional view showing another embodiment of the present invention. 20: Liquid tank, 21: Filling valve body, 22: Cylinder, 24: Curved/pressure chamber, 3o: Curved centering guide, 33: Curved/for cleaning cap.

Claims (1)

[Scope of utility model registration request] A valve body that hangs down in communication with the liquid tank, a sliding tube that is installed to be able to slide vertically into the valve body and whose lower end protrudes from the valve body, and a centering ring that is attached to the lower end of the sliding tube. A liquid-filled valve having a guide, a flange formed on the outer periphery of the valve body, and a pressure chamber that is attached so as to surround the valve body so as to be movable up and down, and between the upper surface of the flange and the outer periphery of the valve body. What is claimed is: 1. A liquid filling valve comprising: a cylinder member having a shape formed therein; and a connecting member connecting the cylinder and the sliding tube.