JPS6128922Y2 - - 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. The purpose is to be able to freely adjust the pressure of water sprayed from the nozzle hole by manual operation for each individual valve from 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.

The drawing shows a 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, and a water pipe P is inserted into this connection hole 2 and connected to supply underground water into the valve V. Reference numeral 3 in the figure represents a cavity provided inside the valve body 1;
A suitable number of nozzle holes 4 are arranged diagonally upward on the upper wall 1a of the main body 1, and a cylindrical spool 5 is provided in the center of the cavity 3. It is fitted between the upper and lower walls 1a and 1b of the main body 1 so that it can be manually rotated horizontally on the same center line Y-Y as the water pipe connection hole 2. In the case of the present invention, between the water pipe connection hole 2 and the spool 5, there are several valve holes with different hole diameters along the circumference of the same radius from the center line Y-Y as shown in FIG. 6a, 6b, 6c, and 6d are arranged and drilled at appropriate intervals, and the spool 5 is provided with a water guide hole 7 that extends across the cavity 3 of the valve body 1 and penetrates in the horizontal direction. A communication hole 8 of approximately the same diameter is provided which runs diagonally from the middle of the valve hole 6a toward the valve hole 6a, which has the largest diameter among the valve holes 6a, 6b, 6c, and 6d. The reference numeral 9 in the figure is a cap to prevent the spool from coming off, which is fitted into the recess 1c on the top surface of the valve body 1. It is screwed and fixed to the top wall 1a of the main body 1 with screws 10, 10, and is inserted into the hole in the center of the cap 9. 9
A protrusion 5a at the upper end of the spool 5 is fitted into the protrusion 5a, and the protrusion 5a has a groove 5b for horizontally rotating the spool 5 with a tool such as a screwdriver.
is engraved.

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

If groundwater pumped up from the well is sent to the water pipe P for each sprinkler valve V installed in this way, in the state shown in the drawing, the groundwater will flow from the water pipe P → valve hole 6a → communication hole 8 → water guide hole 7 →Water is sprayed onto the road surface from each nozzle hole 4 of the valve V via the cavity 3. At that time, the water pressure of groundwater sent from the water pipe P to each watering valve V is higher as the water pressure in the pipe is closer to the water supply pump, and also on a slope, the water pressure is higher the further down the slope. The height of the jetted water is proportional to the water pressure inside the water pipe P,
It differs depending on the installation location of the valve V and is not constant at all.

However, in the case of the present invention, a spool 5 for adjusting water pressure is provided inside the valve body 1, so a screwdriver etc. Insert the tool and rotate the spool 5 horizontally to open the communication hole 8.
By changing the phase of the valve holes 6a, 6b, 6c, and 6d facing the communication hole 8, it is possible to freely select the facing position of the valve holes 6a, 6b, 6c, and 6d, and expand or contract the facing water flow area between the two holes. By simple handling, the height of water jetted from each valve can be kept constant at all times.

As mentioned above, when melting snow that has fallen on the road surface by spraying underground water in snowy areas in winter, the water valves of the present invention are installed at appropriate intervals on the water pipes buried in the road surface. If used as a valve, the pressure of water sprayed from the nozzle hole can be adjusted freely from the road by manual operation for each individual valve, and there is no risk of malfunction over a long period of time.
Since accurate valve adjustment can be carried out at all times, the structure is very simple and can be manufactured at low cost, so that it exhibits remarkable effects in practical use.

[Brief explanation of the drawing]

Fig. 1 is a vertical 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 cross-sectional view taken along the line A-A in Fig. 1. FIG. 4 is a perspective view showing the state in which the valve is used. 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,
6a, 6b, 6c, 6d... Valve hole, 7... Water guide hole, 8... Communication hole, 9... Cap, 9a...
Cap hole, 10...screw, P...water pipe, P
1... Main pipe, P2... Branch pipe, C... Concrete.

Claims (1)

[Scope of utility model registration request] A cavity 3 having nozzle holes 4 arranged radially diagonally upward is provided inside the valve body 1 having a water supply pipe connection hole 2 bored at its lower end. A spool 5 that can be manually rotated horizontally on the same center line Y-Y is installed, and a circumference of the same radius from the center line Y-Y is installed between the water pipe connection hole 2 and the spool 5. Several valve holes 6a, 6b, 6c, 6d with different hole diameters are arranged and drilled at appropriate intervals along the spool 5, and a water guide hole 7 is formed in the spool 5, passing through the cavity 3 of the valve body 1 in the lateral direction. At the same time, a communication hole 8 of approximately the same diameter is provided which runs obliquely from the middle part of the water introduction hole 7 toward the valve hole 6a with the largest diameter among the valve holes 6a, 6b, 6c, and 6d, and the spool 5 The phase of the communication hole 8 is changed by rotating in the horizontal direction, and the communication hole 8 is made to selectively face each valve hole 6a, 6b, 6c, and 6d, so that the water pressure inside the valve can be freely adjusted. A water sprinkler valve for snow removal characterized by the following configuration.