JPH06154658A - Artificial snow spraying device - Google Patents

Abstract

PURPOSE:To create artificial snow even when the outdoor air temp. is high and to efficiently spray the artificial snow with lessened labor and reduced cost on a wide slope. CONSTITUTION:This artificial snow spraying device consists of a cyclone 10 which separates pneumatically transported ice pieces and air, a rotary valve 20 of a blow-through type which is connected to the lower part thereof, an ice piece pulverizing device which is provided downstream of this valve and consists of a crusher 40 and a means for forcibly feeding the ice pieces at a high speed horizontally to this crusher and a spraying hose 50 which is connected to the above pulverizing device. These apparatus are provided on a moving truck 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for spraying snow-crushed ice on a ski slope or at an event site such as an exhibition.

[0002]

2. Description of the Related Art Conventionally, water is atomized by mixing pressurized water and pressurized air sent by a pipe with a fixed type device, and finely divided by cooling drop of low outside air temperature (-2 ° C. or less). Some ice is sprayed on the slopes.

[0003]

However, the above method has a drawback that it does not turn into ice when the outside air temperature is high.

Since the device for mixing the pressurized water and the pressurized air is of a fixed type, in order to efficiently load artificial snow on a wide slope, many devices are installed or the devices are moved regularly. Therefore, there is a problem that the cost is increased and a lot of manpower is required.

According to the present invention, the outside air temperature is high (-2 ° C to +1).
An object of the present invention is to provide a device capable of producing artificial snow even at 0 ° C.) and efficiently spraying the artificial snow over a wide slope, with less manpower and less cost.

[0006]

The artificial snow spraying device of the present invention is a cyclone that separates air-transported ice pieces from the air, and has a guide plate spirally wound at the inlet. A blow-through type rotary valve connected therebelow; an ice piece crushing device provided downstream thereof; a rotary crusher body having multiple hammers on the outer periphery for crushing the ice pieces; A crusher including a receiving blade provided below the main body, and means for horizontally feeding the ice pieces at high speed between the crusher main body and the receiving blade; connected to this crushing device It consists of a spraying hose; these devices are provided on a fixed base or a mobile trolley.

[0007]

By artificially pulverizing the ice pieces transported by air and spraying them on the slopes, artificial snowfall can be performed even when the outside air temperature is high. By mounting the device on a moving trolley, artificial snow can be efficiently generated over a wide slope.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the overall configuration of the device of the present invention.
The ice pieces transported with air in the transport pipe 1 are cyclones 1.
It is separated from air by 0.

The ice pieces that have entered the cyclone 10 centrifugally move along the spiral guide plate 12 attached to the inside of the short-body type cyclone and settle down to the bottom of the main body due to gravity, and the air flows through the center of the cyclone. To rise.

The spiral guide plate 12 has the effects of rectifying and decelerating the vortex flow of air formed in the cyclone, minimizing pressure loss and suppressing crushing of ice pieces due to impact.

Since the opening area of the cyclone inlet 11 is larger than the inner area of the transport pipe 1 up to that time, the flow velocity of the ice pieces in the pipe is decelerated from the flow velocity up to that point at the time of entering the cyclone, and the guide plate 12 facilitates the separation of ice pieces with a cyclone.

The separated ice pieces are discharged by a fixed amount by a rotary valve 20 connected to the lower part of the cyclone 10. On the other hand, the blower 30 is installed at the bottom of the rotary valve 20.
High-speed air from the air is sent through the duct 31. A blow-through type in which the vane 21 of the rotary valve 20 rotates in the direction of the center of rotation is preferably parallel to the air flow. A seal is attached around the blades 21 to enhance airtightness with the casing.

The ice pieces that have entered between the blades 21 of the rotary valve 20 are pumped to the crusher 40 in front of the duct 32 by high-speed air at the lowermost position of the rotary valve. The air velocity is preferably 30 m / sec or more, which is the limit velocity at which ice pieces do not adhere to the blades.

The crusher 40 is composed of a rotary crusher body 41 having a large number of hammers 41a on the outer circumference thereof, and a receiving blade 42 provided below the body 41. Then, the ice pieces are impacted and crushed between the hammer 41a and the receiving blade 42, become snow-like fine powder, and are ejected in the receiving blade direction. The receiving blade 42 can be adjusted in angle up and down,
By adjusting the gap between the hammer and the blade, the grain of snow-like fine powder can be changed.

The hammer 41a of the crusher is fixed to the main body 41 or attached in a pendulum shape. When the pendulum is attached, when a foreign object harder than the ice pieces comes in, the hammer 41a can escape to the rear side in the rotation direction from the position where the ice pieces are crushed, thus preventing damage to the hammer. be able to.

The peripheral speed of the hammer of the crusher is set equal to or higher than the speed of the air flowing in the duct 32, so that the pressure loss inside the crusher is suppressed and the crushed snow-like ice is ducted. It has the effect of accelerating more than the internal air velocity.

Pressurized air from a blower 30 and a crusher 40 as means for horizontally feeding the ice pieces at high speed.
The snow-like ice fines accelerated by the funnel-shaped duct 3
After passing through 3, the spray hose 50 is pressure-fed to a predetermined position, and artificial snow can be sprayed on the slope.

The cyclone 10, the rotary valve 20, the blower 30 and the crusher 40 are self-propelled mobile carriages 6.
It is mounted on the 0, and the slope can be moved freely. Depending on the case, these devices may be provided on the fixed base. Further, as shown in FIG. 2, the pressurized air used to transport the ice pieces can be reused for spraying finely pulverized snow-like ice. Further, when the velocity or pressure of the pressurized air is large, as shown in FIG. 3, snow-like ice can be sprayed simply by putting ice pieces into the crusher 40.

[0019]

The artificial snow spraying device of the present invention is as described above, and it is possible to artificially snowfall even when the outside air temperature is high by finely crushing the ice pieces transported by air and spraying them on the slopes. By mounting the device on a moving trolley, artificial snow can be efficiently generated over a wide slope.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is an explanatory view of a modified example of means for horizontally pumping ice pieces and snow-like ice at high speed.

FIG. 3 is an explanatory view of another example of means for pressure-feeding ice pieces and snow-like ice in a horizontal direction at high speed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transport pipe, 10 ... Cyclone, 12 ... Spiral guide plate, 20 ... Blow-through type rotary valve, 30 ... Blower, 40 ... Crusher, 41 ... Rotary crusher main body, 41a ... Hammer, 42 ... Blade, Fifty
… Spraying hose, 60… mobile dolly.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Fujisawa 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Kazuaki Nagase 1 Chaya-cho, Kita-ku, Osaka-shi, Osaka No. 32 Yanmar Diesel Co., Ltd. (72) Inventor Minoru Toyonaga No. 32-32 Chayamachi, Kita-ku, Osaka City, Osaka Prefecture No. 32 Yanmar Diesel Co., Ltd. (72) Toshiaki Endo 89, Kitaei, Hakusan-mura, Tsuruoka, Yamagata Prefecture Inside Iron Works Co., Ltd.

Claims (3)

[Claims] 1. A cyclone for separating air-fed ice pieces and air, wherein a cyclone-shaped guide plate is provided at an inlet portion of the cyclone. 2. A crusher comprising a rotary crusher body having a large number of hammers on the outer periphery for crushing ice pieces, and a receiving blade provided below the body, and between the crusher body and the receiving blade. An artificial snow crushing device comprising: means for horizontally feeding ice pieces at high speed in a horizontal direction, and discharging ice crushed into snow by a crusher in the pressure feeding direction. 3. The cyclone according to claim 1, a blow-through type rotary valve connected below the cyclone, the ice piece crushing device according to claim 2 provided downstream thereof, and the crushing device. A spraying device for artificial snow, which comprises a spraying hose connected to the above, and these devices are provided on a fixed base or a mobile trolley.