JPS6222704Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of use Generally used in gas appliances such as water heaters, water supply systems, and other water flow control devices.

Construction of the conventional example and its problems As shown in FIG. 2, a water flow control device is comprised of a core 9 having a water passage hole 8 formed in a vertical direction, an O-ring 2, and a housing. Reference numeral 4 indicates a drain valve, 5 indicates a water flow control device, and 7 indicates an opening valve.
When the water pressure on the primary side increases, the O-ring 2 contracts to reduce the clearance with the core 9, thereby controlling the water pressure. In this configuration, the water passage hole 8
The core 9 is mounted in a vertical position so that the hole is opened in the vertical direction, and the cut extends horizontally. Therefore, when the drain plug 4 is loosened to drain water, the water remaining in the water passage hole 8 forms a water film due to surface tension, but the weight of the water film is transferred to the cut of the water passage hole 8. On the other hand, as a result of uniform application, the surface tension is maintained in balance, and the water film will not rupture unless external forces act on it. That is, if this water film freezes in cold weather, the water passage hole 8 will be blocked. Therefore, there was a problem in that when water was passed through it again, the water would not pass through it, making it impossible to reuse it.

The purpose of the device is to prevent water from remaining on the surface of the core when draining water in a water volume control device that has a core, an O-ring, and a housing that surrounds them.
When the water is drained and frozen, the water hole will not be blocked.
Always try to make it reusable.

Composition of the invention: A core with water holes opened in the horizontal direction;
It has a water flow control section consisting of an O-ring that controls the clearance with the core according to the water pressure on the primary side, and a housing that surrounds these. This is a water flow control device equipped with a drain valve. Since the water passage hole is horizontal, after draining the water,
Residual moisture collects on the sides of the core due to surface tension and does not remain in the water passage hole, so no water film is formed in this area.

Description of Examples 1 is a core in which water passage holes 6 are formed in the horizontal direction;
2 is an O-ring that controls the clearance with the core 1, and 3 is a housing, which controls the amount of water in response to changes in water pressure on the primary side. 4
5 is a water drain valve, 5 is a water flow control device, and 7 is an opening valve. In this configuration, the water flow control device is bent in the horizontal direction so that the core 1 is in a horizontal position, and is attached to this portion, and the water passage hole portion 6 is set in the horizontal direction. With this configuration, when the opening valve 7 is closed and the drain plug 4 is opened to drain water, a downward force is applied to the moisture in the water passage hole 6 due to its own weight. Therefore, even if a water film is once formed in the water passage hole 6, the water film cannot maintain its balance due to surface tension, and the water film ruptures and the water flows downward to the water passage hole 6. The hole 6 will be opened. When water is passed through again, there are no blockages, so
It can automatically take measures against freezing in winter, such as immediate reuse.

Effects of the invention When water is drained from the water flow control device in cold weather, the water passage hole is not blocked by surface tension due to residual moisture, making it possible to re-flow water and reuse it at any time after freezing.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a water flow control device showing an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Core, 2... O-ring, 3... Housing, 5... Water flow control device, 6... Water passage hole part.

Claims (1)

[Scope of utility model registration request] A core having water holes opened in the horizontal direction;
It has a water flow control section consisting of an O-ring that controls the clearance with the core according to the water pressure on the primary side, and a housing that surrounds these. A water flow control device equipped with a drain valve.