JPH055200Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a filling valve that can be applied to a filling valve.

(Prior Art) FIG. 5 is a partial longitudinal cross-sectional view showing an example of the structure of a conventional filling valve 1, in which the right half shows the valve in the open state and the left half shows the valve in the closed state. The vent tube 2 is connected to a liquid valve stem 5 by a screw 4. Reference numeral 3 indicates a seat gasket for a liquid valve made of an elastic material, and numeral 6 indicates an O-ring for a seal made of an elastic material. Recent diversification (bottle types, liquid types)
In response to this, this vent tube 2 needs to be replaced each time, but it takes a considerable amount of time because it is screwed in, and it takes 40 seconds to 60 seconds to replace one tube.
This was inconvenient in terms of production efficiency.

(Problems to be solved by the invention) This invention solves the conventional problem of low production efficiency, and allows the vent tube to be replaced in a short time without the need for tools. The purpose of the present invention is to provide a filling valve with a structure that does not come off even when the valve is pulled.

(Means for Solving the Problems) Therefore, the present invention consists of a cylindrical valve body with a valve seat formed therein, which is installed vertically in the liquid tank of a filling device, and a valve body that is inserted into the body. In a filling valve having a cylindrical liquid valve stem and a vent tube removably attached to the lower end of the stem, a cylindrical retainer is inserted from the central lower end of the stem, and the inner surface of the retainer is of the same circular shape. Balls are rotatably embedded at equal intervals on the circumference and protrude from the inner surface of the retainer, and are formed on the outer periphery of the vent tube inserted from the lower center of the retainer in a vertical direction downward from the upper end of the vent tube. and an introduction groove having a depth slightly larger than the protruding portion of the ball protruding from the inner surface of the retainer, and a portion of the ball protruding from the inner surface of the retainer that is bent and continuous in the circumferential direction from the terminal lower end of the introduction groove. This is made up of a dead-end horizontal groove formed slightly deeper and an O-ring interposed between the vent tube and the retainer at the upper and lower positions of the ball to seal the gap between the two. It is used as a means for point-solving.

(Operation) To attach the vent tube to the liquid valve stem, insert the vent tube from below into the retainer with the vertical introduction groove aligned with the ball position, and then insert the vent tube into the retainer from below at the dead end of the circumferential horizontal groove. If you rotate the ball so that it is positioned at , the vent tube will not fall out of the retainer.
A vent tube is coupled to the liquid valve stem via a retainer.

Next, to remove the vent tube, rotate the vent tube until the position of the ball matches the vertical introduction groove, and then pull the vent tube downward, so that the introduction groove runs along the ball and resists. The vent tube can be removed without any problems.

(Embodiments) Examples of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show examples of the present invention. Now, in Figures 1 to 4, 11 is the valve body;
12 is a vent tube, 3 is a seat packing, 1
3 and 14 are O-rings made of elastic bodies, 15 is a ball, and 16 is a cylindrical retainer inserted from the lower end of the liquid valve stem 20. The balls 15 rotate at equal intervals on the same circumference inside the retainer 16. The ball 15 is buried in the retainer 16.
protruding from the inside of 17 is an O-ring made of an elastic body. Also, a vertical introduction groove 19 extending from the upper end of the vent tube 12 in the axial direction is slightly larger (depth f) than the protruding portion (extrusion e) of the ball 15.
is formed, and is bent and continuous in the circumferential direction from the terminal lower end of the introduction groove, and the protrusion e of the ball is
A horizontal groove 18 with a dead end 18a of a greater depth g is formed.

Furthermore, to explain in detail the structure of the embodiment of the present invention,
The ball 15 is housed in the hole 16a of the retainer 16 with a gap that allows it to move slightly in the horizontal direction, and its outer periphery meets the inner wall 20 of the liquid valve stem 20.
It is regulated by a. The hole 16a is the retainer 16
The inner side of the ball 15 is reduced in size to restrict the protrusion e of the ball 15. On the other hand, vent tube 12
is a depth f formed deeper than the protrusion e of the balls protruding from the retainer 16 at the upper part thereof.
It has a longitudinal introduction groove 19 having a diameter. Therefore, the vent tube 12 is structured so that it can be inserted without any resistance.

Further, a horizontal groove 18 having a depth g is machined in the introduction groove 19 at the lower end thereof to a dead end 18a. The depth g of the groove 18 is slightly deeper than the protrusion e of the ball 15.
is set so that it can rotate until the dead end 18a of the groove 18 and the ball 15 in the retainer 16 come into contact. And the ball 1 held in the retainer 16
5, the vent tube 12 can be easily attached and detached without the need for special tools, and the ball 1
5 is the hole 16a of the retainer 16 and the vent tube 1
2 horizontal groove 18, the ball's protrusion distance e
works effectively to completely prevent the vent tube 12 from falling off.

Next, the effect will be explained. After inserting the vent tube 12 into the retainer 16 from below with the introduction groove 19 aligned with the position of the ball 15, the vent tube 12 is rotated until the dead end 18a of the groove 18 engages with the ball 15. Then, the groove 18 and the ball 15 engage, and the vent tube 1
2 does not fall out from the retainer 16, and the vent tube 12 is coupled to the liquid valve stem 20 via the retainer 16.

Next, to remove the vent tube 12, rotate the vent tube 12 until the position of the ball 15 and the introduction groove 19 match vertically, and then pull the vent tube 12 downward.
The vent tube 12 can be removed without resistance while it is along the ball 15.

In addition, although the case where three balls 15 were provided was shown in the said Example, the number of balls 15 should just be two or more. Further, the horizontal groove 18 is left horizontal in the above embodiment, but in order to further prevent it from falling off, the end of the horizontal parallel groove 18 is rounded up and the vent tube 12 is pulled down. A cut-up groove may be formed in the upper part of the terminal end of 18.

(Effects of the Invention) Since the present invention is configured as described in detail above, it is possible to significantly improve workability in attaching and detaching the device compared to the conventional method.

In the conventional quick coupler system, the amount of movement of the ball is increased, the outer cylinder is slidable, and a spring return system is used to plug it in.
The outer cylinder descended to prevent the ball from escaping. For this reason, the structure is complicated and requires both hands to attach and detach, but this is not possible with filling valves due to their structure.

This invention limits the holding means of the ball, limits its movement, eliminates unnecessary parts, allows it to be attached and detached with one hand, and makes it possible to confirm that it is attached in a fixed position. ,
The inserted vent tube can be prevented from rotating and falling off during operation.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a filling valve showing an embodiment of the present invention, Fig. 2 is a plan view of the vent tube, Fig. 3 is a partially sectional side view of the same, and Fig. 4 is an enlarged plan view of the hole in the retainer. 5 is a longitudinal sectional view showing an example of a conventional filling valve. Explanation of the main parts of the figure, 11...Valve body, 1
2...Bent tube, 13, 14...O ring, 15...Ball, 16...Retainer, 16a
...hole, 18 ... dead-end groove (recess),
19...Introduction groove, 20...Liquid valve stem.

Claims (1)

[Scope of utility model registration request] A cylindrical valve body with a valve seat that is installed vertically in the liquid tank of the filling device, a cylindrical liquid valve stem with a valve body that is inserted into the body, and a lower end of the stem. In the filling valve having a removably attached vent tube, a cylindrical retainer inserted from the central lower end of the stem, rotatably embedded in the inner surface of the retainer at equal intervals on the same circumference, and the retainer A ball protruding from the inner surface is formed on the outer periphery of the vent tube inserted from the lower center of the retainer in a vertical direction downward from the upper end of the vent tube, and is slightly smaller than the protruding portion of the ball protruding from the inner surface of the retainer. an introduction groove with a large depth; a dead-end horizontal groove that is bent in the circumferential direction from the lower end of the introduction groove and formed slightly deeper than the protruding portion of the ball from the inner surface of the retainer; A filling valve comprising an O-ring interposed between the vent tube and the retainer at upper and lower positions to seal the space between the two.