JPS5931159Y2 - Water stop device for liquid pumping type liquid containers - Google Patents

Description

[Detailed description of the invention] The present invention relates to an overturning water stop device for liquid containers (thermos flasks, portable coolers, kettles, etc.) that allow the contents to be poured out using a liquid pumping device such as an air pump. It is something.

Generally, in a liquid pump type liquid container, a series of pouring passages for pouring out the contents are provided in the liquid container in the main body.

If this dispensing passage is left open, there is a risk that the liquid content may leak through the dispensing passage when the main unit falls over, which is extremely dangerous if the liquid content is boiling water. There's a problem.

In view of the above-mentioned problems, the present invention has been developed by providing a water stop valve at an appropriate location in the dispensing passageway that communicates with the inside and outside of the internal liquid container of the main body to close off the dispensing passageway when not in use. The purpose is to prevent leakage.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid pumping-type liquid container overturn stop device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a vertical cross-sectional view of the top of a liquid pumping type thermos flask according to an embodiment of the present invention, in which a bellows type manual air pump is employed as a liquid pumping device.

In FIG. 1, reference numeral 1 denotes a main body, 2 a lid pivotably attached to the main body 1, 3 an exterior case of the main body 1, and 4 a vacuum chamber which is a liquid container disposed inside the main body 1. 5 is a bellows-type manual air pump disposed inside the lid 2; 6 is an operation plate for driving the air pump 5; 7 is tightly fitted into the mouth 8 of the medium bottle 4; 9 is the liquid pumping pipe, 1
0 indicates a liquid dispensing pipe, and 11 indicates a dispensing auxiliary pipe.

Inside the inner stopper 7, there are provided an air passage 14 that communicates between the discharge port 13 of the air pump 5 and the inside of the inner stopper 4, and a water passage 15 that communicates the liquid pumping pipe 9 with the liquid pouring pipe 10. There is.

Reference numeral 12 is an inlet of the air pump 5.

Then, a liquid pumping pipe 9, a water passage 15, and a liquid pouring pipe 10
A series of pouring passages are constructed.

The water passage 15 is composed of a vertical water channel 15a and a horizontal water channel 15b, and the vertical water channel 15a has a water stop valve provided with a conical valve seat 16 and a conical seat surface 18 that seats on the valve seat 16. A valve 17 is provided.

The valve seat 16 is provided so as to close the vertical waterway 15a, and has an appropriate number of water holes 19, 19, . . . .

The water stop valve 17 is biased by a spring 20 so as to close the water holes 19, 19, . . . .

That is, when the thermos flask is not in use, the pouring passage is closed by the water stop valve 17.

A guide rod 22 is integrally formed in the center of the lower surface of the water stop valve 17 and extends downward through a through hole 21 formed at the center of the valve seat 16. An umbrella-shaped pressure receiving part 23 for receiving dynamic pressure is integrally provided.

In addition, the valve seat 16 and the water stop valve 17 are the inner stopper 7 in the illustrated embodiment.
Although it is provided in the water passage 15 inside the pipe, it may be provided at an appropriate location in the middle of the pouring passage.

Next, the operation of the illustrated thermos flask will be explained with reference to FIG.

When the thermos bottle is not in use, turn off the water stop valve 1 as shown by the solid line in Figure 2.
7 is seated on the valve seat 16 by the biasing force of the spring 20, and the water holes 19, 19, . . . in the valve seat 16 are closed.

Therefore, even if the main body 1 is accidentally tipped over, the liquid content will not leak out through the spouting passage because the middle of the spouting passage is closed.

Furthermore, as in the illustrated embodiment, the abutting surfaces of the valve seat 16 and the water stop valve 17 are both conical in shape, so that the abutting surfaces fit in well and the sealing performance is improved.

When using this thermos flask (when pouring liquid), press the operation plate 6 to drive the air pump 5, and blow pressurized air into the medium bottle 4 from the air pump 5. The liquid W in the medium bottle 4 is pushed out by the liquid pumping pipe 9.
is raised to apply the dynamic pressure to the pressure receiving portion 23 of the water stop valve 17 and the seat surface 18.

Then, due to the dynamic pressure, the water stop valve 17 rises against the biasing force of the spring 20 as shown by the dotted line in Figure 2, and the water holes 19, 19, etc. of the valve seat 16 are opened. Then,
The liquid W can be poured out to the outside via the liquid pouring pipe 10 and the auxiliary pouring tube 11.

At this time, the dynamic pressure of the brewed liquid W acts on the umbrella-shaped pressure receiving part 23 provided on the water stop valve 17 and the seat surface 18,
The operability of the water stop 917 is improved.

FIG. 3 shows a modified example of the water stop valve 17, in which (a) a small hole 24 is formed on the top surface of the water stop valve 17 to drain the water accumulated in the case shown, and (b) In the illustrated case, a weight 25 is integrally provided on the upper surface of the water stop valve 17, and the weight of the weight 25 replaces the biasing force of the spring 20.

In addition to the illustrated embodiment of the thermos flask, the present invention can also be applied to portable coolers or kettles, and an electric air pump or an electric axial flow pump can be used instead of a manual air pump as the liquid pumping device. It can also be adopted.

Next, the effects of the liquid pumping type liquid container overturning water stop device of the present invention will be listed below.

That is, according to the present invention, (1) A conical valve seat 16 and a conical seat seated on the valve seat 16 are installed at appropriate positions in the pouring passageway that communicates the inside and outside of the liquid container 4 in the main body 1. Since the water stop valve 17 having the surface 18 is provided, the abutment surfaces of the valve seat 16 and the water stop valve 17 are better adapted to each other, and the seal 1 quality is improved. Since the pressure receiving part 23 that receives the dynamic pressure of the brewed liquid is provided integrally protruding toward the upstream side, the dynamic pressure of the poured liquid acts on the seat surface 18 of the water stop valve 17 and the pressure receiving part 23, It has practical effects such as improving the operability of the valve.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the upper part of a thermos flask, which is a liquid pumping type liquid container according to an embodiment of the present invention, Fig. 2 is an enlarged view of part A in Fig. 1, and Fig. 3 A9 shows a modification of the water stop valve. It is a longitudinal cross-sectional view showing an example. 1...Body, 4...Liquid container, 5...
...Liquid pumping device, 16... Valve seat, 17...
... Water stop valve, 18 ... Seat surface, 23 ...
...Pressure receiving part, L...Pour passage.

Claims (1)

[Scope of utility model registration request] In the liquid pumping type liquid container, the liquid in the liquid container 4 disposed in the main body 1 is led out to the outside through a pouring passage communicating between the inside and outside of the liquid container 4 by a liquid pumping device 5. A conical valve seat 1 is placed at an appropriate position within the passage.
6 and a water stop valve 17 having a conical seat surface 18 seated on the valve seat 16, and the water stop valve 17 includes:
A water-stopping device for a liquid pumping type liquid container, characterized in that a pressure receiving part 23 that receives the dynamic pressure of the pouring liquid is integrally provided to protrude toward the upstream side.