JPH0312606B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention belongs to the field of firefighting equipment, and is mainly used as a fire hydrant in water tanks in snowy and cold regions.

(Prior art) In conventional water intake valves installed in underground water storage tanks, etc., the opening/closing mechanism of the valve body is located in the frozen area of the stored water, so in winter, water in the intake pipe below the valve body is There were defects that often caused the water to freeze, making it impossible to take water.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, the present invention arranges the normal position of the valve body in an unfreeze area below the water surface, and provides air to the water passage above the valve body and up to the water intake. The purpose of the present invention is to provide a fire hydrant that prevents water from freezing by allowing water to flow in and has a compact protrusion above the water tank during normal times, thereby making it useful for disaster prevention in snowy and cold regions. .

(Means for Solving the Problems) In order to achieve the above object, the present invention fits a valve body into a water intake pipe installed vertically in a water storage tank so as to be able to move up and down below and above the water surface, and is integrated with the valve body. The water pipe is connected to the water intake part.

(Function) According to the above configuration, the water directly below the valve body is lower than the water level in the water storage tank, and air is sealed in the upper part of the valve body, so the valve body and the water directly below the valve body do not freeze.

(Example) To specifically explain the present invention using an example, as shown in FIG. Since it is arranged watertight inside the water intake pipe 3 at a required level below the water level, even if the water surface freezes and becomes covered with ice 4 during cold winters, the valve body 2 and the water immediately below the valve body 2 will freeze. When in use, the water intake part a is lifted up as shown in FIG. 2 and is supplied with water in a state suitable for use. As shown in FIG. 3, the water intake section a has an upper portion that guides a rod 5 in a watertight manner, and a lower portion that is provided with a water pipe 6 that communicates with a water intake port 7 on the side.
A valve body 2 is integrally provided at the lower end of the water pipe 6 as shown in FIG.
A valve seat 9 is provided at the bottom. and lot 5
A screw shaft 10 integrated at the lower end is screwed into the screw seat 8, a valve 11 rotatably locked to the lower end of the screw shaft 10 is seated on the valve seat 9, and a handle 12 is attached to the upper end of the rod 5.
has been established. The water pipe 6 is guided in a watertight manner by a bonnet 13 integrated with the water intake pipe 3 at the upper part of the water intake pipe 3, and at the same time, the valve body 2 is also watertightly guided around the inner periphery of the water intake pipe 3 by a packing 14 engaged with the outer periphery of its lower end. It is guided so that it can be raised and lowered, and at the rising end, a retaining ring 16 provided around the inner periphery of the bonnet 13 is engaged with a groove 15 recessed in the upper outer periphery of the valve body 2, so that water can be taken in at the time of water intake, as shown in FIG. This prevents the valve body 2 including part a from falling. Therefore, during water intake, the water intake part a is held in the posture shown in FIG. 2, the valve 11 is opened by the handle 12, and the cap 17 of the water intake 7 is
is removed, and the water in the water tank is pumped by the strainer 18, through the water intake pipe 3, from the valve seat 9 of the valve body 2, through the water passage pipe 6, and is taken from the water intake 7 without being affected by surface freezing. Ru. After use, the valve 11 is closed by pressing against the valve seat 9 using the handle 12, and then the water intake part a is pressed and lowered until it is seated on the upper end of the bonnet 13, resulting in the state shown in FIG.

(Effects of the Invention) As described above, according to the present invention, water can be taken at all times regardless of whether the water surface in the water storage tank is frozen, so it is useful for complete disaster prevention measures in snowy and cold regions.

[Brief explanation of the drawing]

Fig. 1 is a state diagram of the fire hydrant according to the present invention in a partially broken water storage tank under normal conditions (when not in use), Fig. 2 is a state diagram of the same fire hydrant when in use, and Fig. 3
The figure is a vertical cross-sectional view of the water intake part, FIG. 4 is a vertical cross-sectional view of the lower part of the water intake pipe including the valve body, and FIG. 5 is a vertical cross-sectional view of the valve body during water intake. In the figure, 2 is the valve body, 3 is the water intake pipe, 5 is the rod, and 6
is the water pipe, 7 is the water intake, 8 is the screw seat, 9 is the valve seat,
10 is a screw shaft, 11 is a valve, 13 is a bonnet, 1
5 is a groove, 16 is a retaining ring. a is the water intake part.

Claims (1)

[Claims] 1. A valve body is fitted into a water intake pipe installed vertically in a water storage tank so that it can be raised and lowered, and the water passage pipe integrated with the valve body is connected to water part a. Under normal conditions, the valve body is located in a predetermined non-freeze area below the water surface. A fire hydrant characterized by the placement of a body.