JPH07189223A - Thawing device - Google Patents

Abstract

PURPOSE:To increase the thawing effect, by providing a storage tank of warm water like sewage at the upstream of a rainwater storage pipe in which lumps of snow are fed and alternately flushing the warm water in the storage tank constantaneously and throwing lumps of snow into the storage pipe to flow the lumps of snow to the downstream. CONSTITUTION:Warm water 5 is filled in a storage pipe 1 and lumps of snow 3 are fed in the pipe 1 from a shaft 2. Then the lumps of snow 3 are piled right below the shaft 2. Next, warm water kept in a water storage tank 4 is discharged at a stroke into the pipe 1 by instantaneously opening a gate 8 by an opening device 7. Then, lumps of snow 3 are dashed to the downstream and the space of the next lumps of snow to be fed is secured. The warm water is dashed to vigorously collide with the lumps of snow and the lumps are crushed into fractions. Then, the heat-transfer area is spread and the heat transfer from the warm water 5 to the lumps of snow 3 is accelerated. Since the warm water 5 flows vigorously and the relative stream speed of the snow lumps and the water increases, the heat transfer from the warm water to the lumps of snow is accelerated. In this way, a wide storage pipe space can be effectively used and a large quantity of snow can be thawed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting device, and in particular, for temporarily storing rainwater and the like, a storage pipe buried in the ground can be effectively used as a snow melting place in winter. The present invention relates to a snow melting device capable of efficiently melting a large amount of snow in a storage pipe.

[0002]

2. Description of the Related Art In a city with a heavy snowfall, snow treatment is extremely important for ensuring a smooth social life, and snow treatment has been conventionally performed by various methods. The conventional snow treatment method will be described below.

Water is poured into a gutter provided on a road,
The snow removed from the gutter is put into the gutter, and the water flowing in the gutter carries the snow to rivers and lakes to melt it. A heating means such as an electric heater or hot water pipe is buried under the road surface, and the road surface is heated by this heating means to melt the snow on the road surface. A pipe with a large number of holes is buried under the road surface, groundwater having a relatively high temperature is flowed into the pipe, and groundwater is ejected from the holes of the pipe to the road surface to melt the snow on the road surface.

However, the above-described conventional snow melting method has a relatively low snow melting capacity, and therefore, excess snow that cannot be processed among the removed snow is transported to a snow dumping site such as a riverbed by a truck or the like. However, snow abandoned on a riverbed in a city not only spoils the cityscape, but dust and the like contained in the snow may cause pollution of the river after the snowmelt.

Therefore, a storage pipe (rainwater adjustment pipe) is effectively used in winter as a snow dumping site and a snow melting device capable of treating a large amount of snow without damaging the urban landscape or polluting rivers. It was suggested to do. That is, it has been proposed that snow is put into the storage pipe and warm water such as sewage treatment water is poured into the storage pipe to melt the snow. Hereinafter, this is referred to as a conventional technique. The storage pipe is composed of a large-diameter pipe buried underground to temporarily store rainwater underground as a flood prevention measure.

[0006]

However, the above-mentioned prior art has the following problems. To throw snowflakes into a storage pipe buried underground,
Several vertical shafts will be built between the storage pipe and the ground, and a large amount of snow will be put into the storage pipe from this vertical shaft, but the slope of the storage pipe is extremely gentle, about 1/1000, and The amount of hot water such as sewage treatment water flowing in the storage pipe is also unstable. Therefore, the snow clumps are accumulated only in the storage pipe just below the vertical shaft, the wide storage pipe space cannot be effectively used as a space for charging the snow crate, and a large amount of the snow crate cannot be thrown into the storage pipe at a time.

Since the flow velocity of the sewage treatment water, which is caused only by the inclination of the storage pipe, is small and unstable,
Heat transfer from sewage treatment water to snow is not smooth. In particular, when a large amount of snowflakes are thrown into the storage pipe at one time and accumulated, leaving a large amount of snowflakes exposed on the water surface, the heat transfer efficiency from the sewage-treated water to the snowflakes is extremely poor, causing snow melting. It takes a long time.

Therefore, an object of the present invention is to temporarily store rainwater and the like, so that a storage pipe buried in the ground can be effectively used as a snow melting place in winter, and a large amount of water can be stored in the storage pipe. An object of the present invention is to provide a snow melting device capable of efficiently performing the snow melting process of the snow.

[0009]

DISCLOSURE OF THE INVENTION The present invention provides a storage pipe buried in the ground for temporarily storing rainwater and the like, and a ground surface provided between the storage pipe and the ground surface. From the vertical shaft for throwing snow mass into the storage pipe from, and buried in the ground on the end of the storage pipe upstream of the vertical shaft, a water tank for storing hot water such as sewage treatment water, The hot water in the water storage tank is provided at the bottom of the water storage tank, and the hot water in the water storage tank is instantaneously discharged from the end side of the storage pipe into the storage pipe by the opening / closing means. It is characterized by melting the snow mass thrown into the storage pipe with the hot water.

[0010]

[Operation] A water storage tank for storing hot water such as sewage treatment water is provided upstream of the storage tube into which snowflakes have been thrown, and the hot water is discharged into the water storage tank and the snowflakes are put into the storage tubes. If they are performed alternately, the snow clumps accumulated in the storage pipe can be sequentially washed out to the downstream side. Therefore, a large storage pipe space can be effectively used as a snow dumping ground, and a large amount of snow melting treatment in the storage pipe can be performed. Furthermore, the snow lumps are crushed into small lumps due to the collision of the warm water such as the sewage treatment water that is discharged instantaneously. Therefore, heat transfer from hot water such as sewage treated water to the snow mass is promoted, and snow melting efficiency is greatly improved.

[0011]

EXAMPLES Next, one embodiment of the snow melting apparatus of the present invention will be described.
A description will be given with reference to the drawings.

FIG. 1 is a schematic sectional view showing an embodiment of the snow melting apparatus of the present invention, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. 3 is another embodiment of the snow melting apparatus of the present invention. FIG. 4 is a schematic sectional view showing a mode, and FIG. 4 is an enlarged sectional view taken along line BB of FIG.

In FIGS. 1 and 2, reference numeral 1 denotes a storage pipe buried in the ground for temporarily storing rainwater and the like, and 2
Is at least one vertical shaft 4 for supplying the snow mass 3 into the storage pipe 1 from the entrance 2A on the ground, which is provided between the storage pipe 1 and the ground, and 4 is upstream of the vertical shaft 2. Hot water 5 such as sewage treatment water buried in the ground above the end of the storage pipe 1
Is a pump for pouring hot water 5 such as treated sewage into the water tank 4, and 7 is a water tank 4
It is an opening / closing means provided at the bottom of the water tank, and includes a water gate 8 that closes the lower opening of the water storage tank 4, and a driving device 9 such as a cylinder for opening and closing the water gate 8. The opening / closing means 7 is
The warm water 5 in the water storage tank 4 is transferred from the upstream end of the storage pipe 4 to the storage pipe 1
It has the function of releasing it instantly.

According to the snow melting apparatus of the present invention configured as described above, a large amount of snow melting processing can be performed as follows. That is, the hot water 5 is put in a state of 1/4 of the diameter of the storage pipe 1, and the snow mass 3 is put into the storage pipe 1 from the entrance 2A of the vertical shaft 2 by a truck or the like. The snowflakes 3 are deposited immediately below the vertical shaft 2 and are exposed on the water surface at the heads of the snowflakes 3. Next, the hot water 5 such as sewage treated water stored in the water storage tank 4 by the pump 6 is discharged into the storage pipe 1 all at once by opening the water gate 8 instantly by the opening / closing means 7. As a result, the snow mass 3 accumulated directly below the vertical shaft 2 is washed away to the downstream side, and the next snow mass 3
A place to put in is secured. Therefore, the space in the storage pipe 1 can be effectively used as a snow dump.

Moreover, the hot water 5 violently collides with the snow lumps 3, whereby the snow lumps 3 are crushed into small pieces, so that the heat transfer area is expanded. Therefore, heat transfer from the warm water 5 to the snow mass 3 is promoted. Furthermore, since the warm water 5 flows vigorously, the relative flow velocity between the snow mass 3 and the warm water 5 increases,
Heat transfer from the warm water 5 to the snow mass 3 is promoted. As a result, snow melting efficiency is improved.

By appropriately adjusting the cycle of pouring water into the water storage tank 4 and discharging hot water from the water storage tank 4 to generate a wave in the storage pipe 1, the erosion effect of the wave and the wave It is also possible to further improve the snow melting efficiency by the stirring action of the crushed snow blocks 3 in the storage tube 1 that it has.

If a weir 10 is provided at the bottom of the storage pipe 1 for holding the snow mass 3 in the storage pipe 1, the snow mass 3 will temporarily stop in the storage pipe 1, and the snow melting efficiency will be further improved. Can be improved.

As shown in FIGS. 3 and 4, the water tank 4 is provided on the ground, and the opening / closing means 7 connects at least one pipe 11 for connecting the end of the water storage pipe 1 and the water storage tank 4, and the pipe 11. Even if the warm water such as the sewage treated water stored in the water tank 4 is instantly discharged into the storage pipe 1 by opening the gate valve 12 in the middle of the The same effect as in the above case can be obtained. Note that, in FIGS. 3 and 4, the same reference numerals in FIGS. 1 and 2 indicate the same items, and thus the description thereof will be omitted.

[0019]

As described above, according to the present invention, a water storage tank for storing warm water such as sewage treatment water is provided upstream of the storage pipe into which snowflakes are thrown, and the inside of the water storage tank is provided. By alternately discharging hot water and introducing snowflakes into the storage pipe, the snowflakes accumulated in the storage pipe can be sequentially flushed to the downstream side. Therefore, a large storage pipe space can be effectively used as a snow dumping ground, and a large amount of snow melting treatment in the storage pipe can be performed. Furthermore, the snow lumps are crushed by the collision of the warm water such as the sewage treatment water that is discharged instantaneously. Therefore, heat transfer from warm water such as sewage treated water to the snow mass is promoted, which brings about a useful effect that the snow melting efficiency is significantly improved.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a snow melting apparatus of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a schematic sectional view showing another embodiment of the snow melting apparatus of the present invention.

FIG. 4 is an enlarged sectional view taken along line BB of FIG.

[Explanation of symbols]

 1: Storage pipe, 2: Vertical shaft, 3: Snow mass, 4: Water tank, 5: Hot water, 6: Pump, 7: Opening / closing means, 8: Floodgate, 9: Drive device, 10: Weir, 11: Piping, 12 : Gate valve.

Claims (3)

[Claims] 1. A storage pipe buried in the ground for temporarily storing rainwater and the like, and a snow mass from the ground to the inside of the storage pipe provided between the ground of the storage pipe and the ground. A vertical shaft for inputting, a water tank buried in the ground on the end of the storage pipe upstream of the vertical shaft, for storing hot water such as sewage treatment water, and provided at the bottom of the water tank. In addition, the hot water in the water storage tank comprises an opening / closing means for instantaneously discharging the hot water into the storage pipe from the end side of the storage pipe, and the hot water instantaneously discharged by the opening / closing means causes A snow-melting device, characterized in that it melts the snow mass thrown into the snow. 2. The water storage tank is provided on the ground, and the end of the water storage pipe and the water storage tank provided on the ground are connected by a pipe, and a gate valve provided in the middle of the pipe is opened. 2. The snow melting device according to claim 1, wherein the hot water in the water storage tank provided on the ground is instantaneously discharged into the storage pipe. 3. The snow melting device according to claim 1, wherein a weir for temporarily retaining the snow mass in the storage pipe is provided at a bottom portion in the middle of the storage pipe. .