JPS6223758Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pinch valve that allows liquid to flow out of a sealed container.

This type of pinch valve is usually attached to the inlet of a closed container that is placed upside down, has a liquid outflow channel and a gas inflow channel in parallel, and opens and closes each channel at the same time. The liquid in the sealed container is caused to flow out or to be stopped.

By the way, in order to open and close each of the channels in a conventional pinch valve, a tube made of a soft elastic material is suspended from the outlet and inlet of each channel, and the middle of these tubes is simultaneously pressed by a pressing member (holding member). This was done by releasing or clamping and closing.

Since each tube is individually opened or clamped and closed, this method has the drawbacks of increasing the number of parts and assembling man-hours, and making the structure complex and expensive.

This invention provides a pinch valve that solves the above drawbacks by providing a tube made of a soft elastic material in one flow path and using this tube to open and close the other (remaining) flow path. It's about doing.

This invention will be described in detail below based on illustrated embodiments.

Reference numeral 1 denotes a valve casing, which is fluid-tightly crimped and fixed to an injection port 3 of an inverted closed container 2 via a tightening ring 4.

A large-diameter liquid outflow channel (hereinafter referred to as an outflow channel) 5 is formed in the axial center of the casing 1, and a tube 6 made of a soft elastic material such as vinyl chloride is fitted and suspended in the outflow channel 5. held. In addition, a casing 1 is also located on the side of the outflow passage 5.
A small-diameter gas inflow channel (hereinafter referred to as the inflow channel)
7 is formed, and a pipe 8 made of a hard material is vertically fitted into the inflow channel 7. The upper end of this pipe 8 is located in the top space of the closed container 2 and communicates with the space.

The inflow passage 7 is a left side wall 1a of the casing 1 that extends downward adjacent to the left side 6a of the tube 6.
The opening 7a at the lower end thereof closely faces the midway wall of the left side portion 6a. Further, the opposite side of the left side wall 1a of the casing 1 is opened, and a cover 1b is fixed to this part, and a long plate-shaped pressing member 9 is pivotally supported by a pin 10 at the intermediate part of the cover 1b. 9 is constantly urged to rotate counterclockwise by a spring 11. And the pressing member 9
When the pressing member 9 is rotated by the spring 11, the pressing member 9
The left end side pressing piece 9a presses the opening 7 of the inflow passage 7 mentioned above.
It is set to face closely to a.

The right half of the pressing member 9 projects outward from the casing 1 and constitutes a lever 9b.
By manually rotating the pressing piece 9a clockwise (downward) against the reaction force of the spring 11, the pressing piece 9a
rotates clockwise (upward) and retreats from the opening 7a.

Since this invention has the above configuration, when the pressing member 9 is rotated counterclockwise by the spring 11,
The pressing piece 9a elastically deforms the midway of the right side 6b of the tube 6 toward the left side 6a, brings it into contact with the left side 6a, and presses and moves the left side 6a toward the opening 7a of the inflow channel 7. , the outer peripheral wall of the left side portion 6a comes into contact with the opening 7a.

As a result, the tube 6, and therefore the outflow path 5 and opening 7a, and therefore the inflow path 7 are simultaneously closed. (Status indicated by the solid line in Figure 1). In this case, since the tube 6 is made of a soft elastic material, it fits well, and even if the periphery of the opening 7a is made of a rigid body, it deforms along the shape of the periphery, so the opening 7a is reliably sealed. . Next, when the lever 9b is manually pushed down against the reaction force of the spring 11, the pressing member 9 rotates clockwise, and the pressing piece 9a rotates downward and to the right to retreat from the tube 6. Become.

As a result, the right side part 6b of the tube 6 elastically returns to the right, the tube 6 becomes cylindrical, and the left side part 6a of the tube 6 moves toward the opening 7 due to its elastic force.
It will be separated from a.

As a result, the outflow path 5 and the inflow path 7 are opened at the same time, and the liquid filled in the closed container 2 flows out from the outflow path 5 through the tube 6 due to its gravity, and the outflowed liquid Outside air corresponding to the volume is drawn into the closed container 2 through the inlet.

When the predetermined liquid flows out by the above operation, when the lever 9b is released, the pressing member 9 is rotated counterclockwise by the reaction force of the spring 11, and the outflow path 5 and the inflow path 7 are closed by the same action as described above. is,
The liquid in the closed container 2 will be prevented from flowing out.

FIG. 2 shows another embodiment of this invention, and this embodiment differs in that the pressing member 9' is of a sliding type instead of the rotating type shown in FIG. 1. This pressing member 9' is formed into a box shape with an open upper and lower surface, and is attached to the lower part of the injection port 3 of the casing 1 so as to be slidable in the left and right direction, and is supported by a spring 11' interposed on the left side thereof. The pressing member 9' has a pressing piece 9a' which is always biased to the left and projects toward the opening 7a of the inflow passage 7 on the right side wall 9c of the pressing member 9'. 9d is an annular handle projecting outward from the right side wall 9c.

In FIG. 2, when the pressing member 9' is moved to the left by the reaction force of the spring 11', the midway of the tube 6 is pinched and closed toward the left side wall of the casing 1 by the pressing piece 9a'. At the same time, the left side 6a of the pipe 8 facing the opening 7a comes into contact with the opening 7a and closes it. and,
By manually moving the pressing member 9' to the right against the reaction force of the spring 11', the pressing piece 9a' retreats from the tube 6, thereby unblocking the tube 6 and simultaneously opening the opening 7a. The blockage is lifted,
Liquid flows out from the closed container 2 through the outlet 5 and tube 6, and outside air is sucked in through the inlet 7.

It should be noted that this invention can also be adapted so that outside air is sucked in from the tube 6 side and liquid flows out from the opening 7a side.

As explained below, this idea involves providing a tube made of a soft elastic material in a flow path formed in the casing, and arranging a casing wall close to the tube with one end of the other flow path opened on one side of the tube. death,
Since a pressing member is disposed on the other side of the tube to press and close the tube toward the casing wall, a part of the wall of the tube can be used when opening and closing the tube. , other channels can be opened and closed at the same time, and therefore the number of parts and assembly steps can be reduced, the structure can be simplified, and an inexpensive pinch valve can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a pinch valve according to this invention, and FIG. 2 is a vertical cross-sectional view of a pinch valve showing another embodiment according to this invention. DESCRIPTION OF SYMBOLS 1...Casing, 1a...Left side wall, 2...Airtight container, 3...Inlet, 4...Tightening ring, 5...
... Channel (outflow channel), 6... Tube, 6a... Left side, 6b... Right side, 7... Channel (Inflow channel),
7a...opening, 8...pipe, 9...pressing member,
9a...Press piece, 9b...Lever, 9c...Right side wall, 9d...Handle, 10...Pin, 11...Spring.

Claims (1)

[Scope of utility model registration request] Forming multiple channels in the valve casing,
A tube made of a soft elastic material is provided in at least one flow path, a casing wall with one end of the remaining flow path open is placed close to one side of the tube, and the other side of the tube is closed to the other side of the tube. A pinch valve is provided with a pressing member capable of pressing and closing the midway of the tube toward the casing wall.