JPS6128921Y2 - - Google Patents

Description

[Detailed explanation of the device] This device is designed to melt snow that has fallen on the road surface in winter snowy areas by spraying water from groundwater. This relates to a water sprinkler valve with a nozzle that is installed and used in the road. To provide a new snow-melting water sprinkler valve with an extremely simple structure and at low cost, without fear of failure over a long period of time and having the function of always performing accurate valve adjustment.

The present invention has been devised to achieve the above object, and its structure and operation will now be described in detail with reference to the drawings of embodiments.

Fig. 1 shows an example of the most typical implementation structure of the sprinkler valve V according to this invention. In this case, the valve body 1 is made of a strong and robust material such as cast iron and has the cross-sectional shape shown in the figure. A water pipe connection hole 2 is bored in the center of the lower end of the main body 1.
Insert the water pipe P into this hole 2 and connect it to the valve V.
Groundwater is supplied to the area. 3 in the diagram
is a cavity provided inside the valve body 1, and in the upper part of the cavity 3, an appropriate number of nozzle holes 4 are radially bored diagonally upward in the upper wall 1a of the body 1. The upper and lower walls 1a,
1b. In addition, water pipe connection hole 2
A valve hole 6 is bored between the spool 5 and the spool 5 at a position eccentric to one side from the center line.
is provided with a water guide hole 7 extending across the cavity 3 and penetrating in the lateral direction, and an appropriate number of communication holes 8 running obliquely from an intermediate portion of the water guide hole 7 toward the valve hole 6. Note that the communication hole 8 and the valve hole 6 are not necessarily provided in one place, but two or more may be arranged symmetrically. In addition, 9 in the figure is a cap that is fitted into the recess 1c on the top surface of the valve body 1 to prevent the spool from coming off. A protrusion 5a at the upper end of the spool 5 is fitted into the protrusion 5a, and a concave groove 5b for horizontally rotating the spool 5 with a tool such as a screwdriver.
is engraved.

Since the sprinkler valve of the present invention has the above structure, in order to use it, a water supply pipe P leading to a water supply pump (not shown) is laid under the road surface, and a water supply main pipe P1 is installed.
Branch pipes P2 are provided to protrude upward at regular intervals along the extension direction of the main body 1, and the tip of each branch pipe P2 is inserted into the connection hole 2 at the lower end of the valve body 1 to connect the watering valve V. The nozzle hole 4 of the upper body is exposed on the road surface and its surroundings are hardened with concrete C and buried.

If groundwater pumped up from the well is sent to the water pipe P for each sprinkler valve V installed in this way, the groundwater will flow through the water pipe P → valve hole 6 → communication hole 8 → water guide hole 7 → cavity 3. Water is then sprayed onto the road surface from the nozzle hole 4 of the valve V. At that time, the water pressure of groundwater sent from the water pipe P to each sprinkler valve V is such that the water pressure in the pipe is higher as it is closer to the water supply pump, and on a slope, the water pressure is higher as it goes down the slope.
The height of the water spouted from the nozzle hole 4 is proportional to the water pressure in the water pipe P, and varies depending on the installation location of the valve V and is not constant at all.

However, in the case of the present invention, since the spool 5 for adjusting the water pressure is provided inside the valve body 1, a tool such as a screwdriver can be inserted into the groove 5b carved in the protrusion 5a on the upper end surface of the spool 5. When the spool 5 is inserted and the spool 5 is rotated horizontally, the rotation of the spool 5 changes the phase of the communication hole 8 facing the valve hole 6, and expands and contracts the facing water flow area of both holes 6 and 8. Since the height of the water spouted from each valve can be kept constant at all times with extremely simple handling operations.

As described above, when melting snow that has fallen on roads in snowy areas by spraying underground water, the water valves of the present invention can be placed at appropriate intervals on water pipes buried in the road surface. If installed and used, the pressure of water jetted from the nozzle hole can be adjusted freely from the road by manual operation for each individual valve, and there is no risk of failure over a long period of time, and the pressure of water jetted from the nozzle hole can be adjusted freely from the road. Since the valve can be adjusted accurately, its structure is very simple and it can be manufactured at low cost, and it exhibits a remarkable effect in practical use.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an example of a specific implementation structure of the snow-melting water sprinkler valve according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a perspective view showing the state of use thereof. V...Water valve, 1...Valve body, 1a...
...Upper wall, 1b...Lower wall, 1c...Recess, 2...Water pipe connection hole, 3...Cavity, 4...Nozzle hole, 5
... Spool, 5a ... Protrusion, 5b ... Concave groove,
6... Valve hole, 7... Water guide hole, 8... Communication hole,
9...Cap, 9a...Cap hole, 10...
...screw, P...water pipe, P1...main pipe, P2...
Branch pipe, C... concrete.

Claims (1)

[Scope of utility model registration request] A hollow part having nozzle holes arranged radially diagonally upward is provided inside the valve body with a water pipe connection hole drilled in the lower end, and in this cavity there are nozzle holes arranged on the same center line as the water pipe connection hole. A spool that can be manually rotated in the horizontal direction is installed, a valve hole is bored between the water pipe connection hole and the spool at a position eccentric to one side from its center line, and the spool is straddled over the cavity. A water guide hole that passes through the water guide hole in the horizontal direction, and a communication hole that runs obliquely from the middle of the water guide hole toward the valve hole, and the phase of the communication hole facing the valve hole is changed by horizontal rotation of the spool. A water sprinkler valve for snow melting, characterized in that the water pressure inside the valve can be freely adjusted by contracting the facing water flow areas of both holes.