JPH0332848Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a water faucet that controls fluid such as water passing through a water supply pipe.

BACKGROUND OF THE INVENTION Recently, snowmaking machines have become popular at many ski resorts. This is because using a built-in snow machine makes it possible to secure the amount of snow necessary for skiing by making artificial snowfall as appropriate, without being affected by the amount of natural snowfall. However, in order to do so, water supply equipment, electrical equipment, etc. must be installed on the slopes in advance to fully utilize the capabilities of the newly constructed snow machine. Naturally, a large amount of water is required to make the snow that allows skiing on the wide slopes. Therefore, a sufficient amount of water is secured by using rivers, groundwater, tap water, etc. as a water source, and the water is first stored in a water tank. This water is pumped up and pressurized by a water pump, then sent through a water main pipe buried underground, and then sent to each snowmaking machine via distribution pipes. A water tap is installed in the underground part of this distribution pipe. These construction snowmaking machines require water pressure above a certain level because the nozzle forms fine water droplets, increases the surface area, and removes the heat of vaporization (accelerating evaporation) to cool and make snow. Therefore, if the amount of water discharged is changed, the water pressure must be adjusted to ensure a constant water pressure. However, since the above-mentioned water faucet has a valve structure whose main function is to stop water, it is necessary to install an independent adjustment valve whose main function is to adjust the water flow and water pressure in the distribution pipe, and to operate both separately. be.

Problems to be Solved by the Invention However, in order to control the water supply sent to the construction snowmaking machine in this way, operating the hydrant and the water volume and pressure regulating valve individually is a heavy burden and has poor operability. In addition, in places with large height differences such as ski slopes, in order to provide sufficient water pressure to snow machines installed at high places, the water pressure in the water main is set to a high pressure of 40 to 60 kg/cm ² and is sent to the Water is supplied to the construction snowmaking equipment at a reduced pressure of ~20 kg/cm ² , but if the differential pressure between the primary and secondary pressures is large, the water cannot be completely shut off using the water tap. Therefore, if water accumulates in the discharge pipe due to water leakage and is not sufficiently drained, water faucets and the like may be damaged due to freezing in snowy, cold regions such as ski resorts.

The present invention has been made in view of these conventional problems, and it is an object of the present invention to provide a faucet that is easy to operate and has excellent flow rate pressure adjustment ability and water shutoff ability.

Means for Solving the Problems Means for achieving the above object will be described below with reference to FIG. 1, which corresponds to an embodiment.

This water faucet 10 includes a valve body 12 having a truncated cone-shaped adjustment part 20 that adjusts flow pressure and a truncated cone-shaped water stop part 22 that stops water. and a valve seat 40 having a valve body insertion space 42 that matches the outer shape of the valve body.
These truncated conical adjustment section 20 and truncated conical water stop section 2
2 both have a covering layer of packing 16, the former 20 is made higher than the latter 22, and the diameters of the large bottom surface of the former 20 and the small bottom surface of the latter 22 are made equal and integrated on both sides.

Effect The above means works as follows.

If a water supply pipe is equipped with a water supply faucet 10 having such a configuration, when the water supply faucet 10 is opened, the valve body 12 is separated from the valve seat 40, and both of the truncated cone-shaped adjustment part 20 and the water cutoff are integrated. each side 28 of the section 22;
30 and a valve body insertion space 42 that matches their external shapes.
Since a tubular space is formed between each of the inner wall surfaces 44 and 46, fluid can smoothly pass therethrough. This is because the direction of the flow along the center line of the valve body 12 and the valve seat 40 is gradually changed by the long, gently sloped side surface 28 and the inner wall surface 44 corresponding to the side surface, and then the direction of the flow is changed even more steeply. This is because there is no sudden change because the change is made by the short side surface 30 and the inner wall surface 46 corresponding to the short side surface 30. At that time, valve body 1
If the insertion position with respect to the valve seat 40 of No. 2 is changed appropriately,
Correspondingly, the volume of the tubular space is mainly adjusted by the adjusting section 20.
Since the flow rate pressure on the discharge side (2
It becomes possible to adjust the next pressure). Hydrant 10
When the valve body 12 is inserted when the valve is closed, the flow pressure on the discharge side rapidly decreases. When the valve element 12 is further inserted and the adjustment part 20 and the water stop part 22 are fitted to the valve seat 40, the respective side surfaces 28 and 30 simultaneously come into contact with the respective inner wall surfaces 44 and 46. For this reason, the side surface 30 of the water stop portion 22 with a steep slope and the inner wall surface 46 corresponding to the side surface mainly perform the water stop function, but the side surface 28 of the adjustment portion 20 with a gentle slope and the inner wall surface corresponding to the side surface mainly perform the water stop function. 44 also performs the water stopping action. At that time, packing 16 is attached to the adjustment part 20 and the water stop part 22.
Since each inner wall surface 4 of the valve seat 40 is coated with
The adhesion with 4 and 46 is increased. As a result, even if the pressure (primary pressure) on the suction side is high, the water-stopping effect is significant and there is no water leakage on the discharge side.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

FIG. 1 is a partial vertical sectional view showing the main parts of a water tap for a construction snowmaking machine to which the present invention is applied, and shows the water tap in a closed state. In the figure, 10 is a water tap interposed between a distribution (water supply) pipe connected to a water main pipe and a construction snow machine. The valve body 12 constituting the main part of the water tap 10 is bullet-shaped as shown in FIG. 2, and consists of a metal body 14 and a packing 16 covering the front half thereof. To cover the packing 16, make 2 to 3 large irregularities on the surface in the mold, polish it, and apply adhesive to the metal body 14.
, then pressurize and inject molten rubber or other packing material into it, and burn it to cover the surface.
Integrate by gluing. Such a valve body 12 has a hemispherical protruding end 18 at its front end, a truncated conical adjustment part 20 after that, and a truncated conical water stop part 2 after that.
2, there is a cylindrical base 24 in the middle part and a cylindrical valve stem attachment part 26 in the rear end. The diameters of this hemispherical tip 18 and the small bottom surface of the truncated conical adjustment section 20 are made equal, and the diameters of the large bottom surface of the adjustment section 20 and the small bottom surface of the truncated conical water stop section 22 are made equal. Large bottom surface of water part 22 and cylindrical base 2
4 and the same diameter. Further, the diameters of the metal main body 14 of the cylindrical base 24 and the cylindrical valve stem mounting portion 26 are equal. Naturally, these adjacent surfaces are all integrated. The height of the adjustment part 20 is made several times, for example, about six times, as compared to the water stop part 22. In this way, the adjusting portion 20
The slope of the side surface 28 of the water stop portion 22 becomes gentle, and the slope of the side surface 30 of the water stop portion 22 becomes steep. The cylindrical valve stem attachment part 26 has an insertion hole 32 at its center for attaching the valve stem, and a ring-shaped recess 34 on the inner wall surface near the tip.
However, a through hole 36 is provided in the side wall from one location of the recess. Further, a ring-shaped recess 38 is provided on the outer wall surface at the boundary between the valve stem mounting portion 26 and the base portion 24.
There is.

The valve seat 40 into which the valve body 12 is inserted is made of stainless steel or the like, and has a cylindrical shape as shown in FIG. The A figure is a plan view, and the B figure is a vertical sectional view. This valve seat 40 has a valve body insertion space 42 at its center that matches the outer shape of the adjustment part 20 and water stop part 22 of the valve body 12. Therefore, with respect to the centerline of the valve seat 40, the angle of inclination of the inner wall surface 44 into which the adjustment part 20 is fitted is equal to the angle of inclination of the side surface 28 thereof, and the angle of inclination of the inner wall surface 46 into which the water stop part 22 is fitted is equal to that angle. Equal to the angle of inclination of the side surface 30. Note that the flange portion 4 of the valve seat 40
Holes 50, 50a, and 50b in 8 are bolt holes for mounting, but if adhesive is used, they will not be used.

As shown in FIG. 1, these valve body 12 and valve seat 40 are installed at predetermined locations in the water conduit of the faucet 10, and a valve rod 52 is connected to the valve body 12. At that time, one end of the valve stem 52 is attached to the mounting portion 26 of the valve body 12.
The bolt and nut 54 fit into the insertion hole 32 in the
It is fixed by the ball 56. The valve rod 52 has a cylindrical space disposed around its outer periphery near the valve body 12 and is guided by a guide member 60 provided with packing 58 to move the valve body 12 up and down inside the discharge pipe 62 . Further, the valve seat 40 is supported by a suction pipe 64 that serves as a stand. A socket 6 is provided on the outer periphery of the suction pipe 64 to prevent water leakage at the points where the respective ends of the discharge pipe 62 and the suction pipe 64 are joined and to increase mechanical strength.
Install 6. Furthermore, O-rings, adhesives, etc. are used as appropriate between the discharge pipe 62, valve seat 40, suction pipe 64, socket 66, etc. In addition, the discharge pipe 6
2 has valves 68, 68a, 68b in the middle to drain water remaining inside when the water tap is closed.
There are drain pipes 70, 70a, 70b equipped with. These valves 68 are automatic drain valves, and when a handle connected to the other end of the valve stem 52 is operated to close the water tap 10 at the end of snowfall, water is automatically drained. Further, the other end of the suction pipe 64 has a flange portion 72 for facilitating connection to a distribution pipe.

FIG. 4 is a diagram illustrating an example of construction of such a water faucet 10. In the figure, 74 is the ground surface, 76 is the distribution pipe fixed underground with concrete, and 78 is the area where the connection point between the hydrant 10 and the distribution pipe 76 is fixed, and the area including the concrete 79 is widely covered for drainage underground penetration. It is crushed stone. Note that 80 is also a drain pipe equipped with an automatic drain valve in the middle. Normally, the depth of burying the water tap 10 underground is about 1 m, but it is determined according to the freezing depth of the slope. Further, 82 is a water supply port at the upper end of the water tap 10 projecting above the ground, and 84 is a handle disposed near the water supply port. When a snowmaking machine is connected to the water supply port 82 of the hydrant 10 constructed in this way, it becomes possible to make necessary snowfall on the slopes. When the handle 84 is operated to open the water tap 10, the valve body 12 is pulled by the valve stem 52 and moves upward and away from the valve seat 40. At that time, the adjustment part 20 and the water stop part 22 are both integrally shaped like a truncated cone.
Since a tubular space is formed between each side surface 28, 30 of the valve element insertion space 42 and each inner wall surface 44, 46 of the valve body insertion space 42 which matches the outer shape thereof, flowing water smoothly passes therethrough. This is because the flow direction along the center of the valve body 12 and the valve seat 40 is gradually changed by the long, gently sloped side surface 28 and the inner wall surface 44 corresponding to the side surface, and then the direction of the flow is changed even further by the steeply sloped side surface 28 and the inner wall surface 44 corresponding to the side surface. This is because there is no sudden change because the change is made by the short side surface 30 and the inner wall surface 46 corresponding to the short side surface 30. Also, the valve body 12
When the insertion position relative to the valve seat 40 is appropriately changed, the volume of the tubular space is correspondingly changed mainly by the adjustment unit 20, so that the water is supplied from the inside of the discharge pipe 62, that is, from the water supply port 82 to the construction snowmaking machine. It becomes possible to adjust the amount of water and water pressure (secondary pressure). In order to close the water tap 10 when the snowfall ends, the handle 8
4 to insert the valve body 12, the water amount and pressure in the discharge pipe 62 rapidly decreases. Further insert the adjustment part 20 and water stop part 22 of the valve body 12 into the valve seat 4.
0, each side surface 28, 30 contacts each inner wall surface 44, 46 at the same time. For this reason,
Although the side surface 30 of the water stop portion 22 with a steep slope and the inner wall surface 46 corresponding to the side surface mainly perform the water stop function, the side surface 28 of the adjusting portion 20 with a gentle slope and the inner wall surface 44 corresponding to the side surface also perform a water stop function. Share the water action.
At that time, the adjustment part 20 and the water stop part 22 are
6, the inner wall surface 4 of the valve seat 40
The adhesion with 4 and 46 is increased. As a result, even if the water pressure (primary pressure) of the suction pipe 64 is high, the water stop effect is significant and there is no water leakage into the discharge pipe 62.
Further, since the water remaining in the discharge pipe 62 when the water tap 10 is closed is automatically drained from the drain pipe 70, freezing does not occur.

Effects of the invention According to the invention described above, the functions of adjusting the flow rate pressure during water supply and shutting off the water are combined into one valve structure, so that operability can be improved.
Further, even if the differential pressure between the primary and secondary pressures is large, excellent flow rate pressure adjustment ability and water stopping ability can be exhibited.

[Brief explanation of drawings]

FIG. 1 is a partial vertical sectional view showing the main parts of a water tap for a construction snowmaking machine to which the present invention is applied, and shows the water tap in a closed state. FIG. 2 is a longitudinal sectional view showing the valve body of the water faucet. FIG. 3 is a view showing the valve seat of the water faucet, in which figure A is a plan view and figure B is a longitudinal sectional view. FIG. 4 is an explanatory drawing of the construction of the water faucet. DESCRIPTION OF SYMBOLS 10... Water supply faucet, 12... Valve body, 16... Packing, 20... truncated conical adjustment part, 22... truncated conical water stop part, 40... Valve seat, 42... Valve body insertion space.

Claims (1)

[Scope of utility model registration request] It has a truncated cone-shaped adjustment part that covers the packing and adjusts the flow pressure, and a truncated-cone-shaped water stop part that stops water connected thereto, the former being higher than the latter,
It is characterized by comprising a valve body in which the former large bottom surface and the latter small bottom surface are integrated with the same diameter, and a valve seat having a valve body insertion space that matches the outer shape of the adjustment part and the water stop part. A water hydrant.