JPH05239812A - Snow melting equipment - Google Patents

Abstract

PURPOSE:To enable much snow to be efficiently melted by using warmed water fed into a snow melting tank, waves generated by a wave making machine, and waves for propagating beating, and by melting snow mass. CONSTITUTION:A snow melting tank 1 with water to be previously stored, is provided with warmed water feeding pipes 3, 3, a cooled water discharging pipe 5, and a wave making machine 7 for generating waves in water in the snow melting tank 1. After that, the partial section of the internal wall of the snow melting tank 1 is provided with band-shaped beats 8, 8 with the one end in contact with the wave making machine 7. A water depth in the longitudinal direction of the beats 8, is formed to be made continuously shallower to the other end from the side of the wave making machine 7, and a water depth in the width direction is formed to be continuously made deeper to the center of the snow melting tank 1. Then, into the snow melting tank 1, warmed water is fed, and snow ingots 2, 2 are cast to be melted with the warmed water, and with waves generated by the wave making machine 7, and waves for propagating the beats 8, snow is quickly melted. Besides, by agitating effect in the snow melting tank 1 and the erosion effect of the snow ingots 2, snow-melting is promoted further.

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 more particularly to a snow melting device which can obtain a high snow melting efficiency by using a wave and a hot water flow in combination.

[0002]

2. Description of the Related Art Snow removal is extremely important for ensuring a smooth social life in a city with a heavy snowfall area.
Snow removal has been conventionally performed by various methods.

A conventional snow treatment method will be described below. Water is poured into a gutter provided on a road or the like, snow is removed from the gutter, and the water flowing in the gutter carries the snow to rivers, lakes and marshes to melt the snow. 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 flown into this pipe, and groundwater is ejected from the holes of the pipe to the road surface to melt the snow on the road surface.

However, since the above-mentioned conventional snow treatment method has a relatively low snow melting treatment capacity, surplus snow that cannot be treated among the removed snow is transported to a snow dump such as a riverbed by a truck or the like. ..

However, the snow thrown away on the riverbed in the city not only spoils the cityscape, but also dust and the like contained in the snow may cause pollution of the river after the snowmelt.

[0006] Therefore, as a snow melting device capable of treating a large amount of snow without damaging the cityscape or polluting the river, a snow melting tank into which snowflakes are thrown and water is stored. A snow melting device has been proposed which comprises a hot water supply means for supplying hot water such as treated sewage water into the snow melting tank. Hereinafter, this snow melting device is referred to as prior art.

[0007]

However, the above-mentioned prior art has the following problems. Heat transfer from the hot water supplied by the hot water supply means to the snow mass may not be performed smoothly. In particular, when a large amount of snowflakes are thrown into the snow melting tank at one time, it takes a long time to melt the snow. Of the heat quantity held by the hot water supplied by the hot water supply means, the proportion of the heat quantity that is not used for snow melting and is released to the outside is high, so the snow melting efficiency is poor.

[0008] Therefore, an object of the present invention is to effectively use a large amount of snow by efficiently using the hot water supplied by the hot water supply means, in particular, the hot water such as sewage treated water, to efficiently treat a large amount of snow. An object of the present invention is to provide a snow melting device that uses a hot water flow together.

[0009]

SUMMARY OF THE INVENTION The present invention is directed to a snow melting tank in which water is accumulated and in which water is stored in advance, a hot water supply pipe for supplying hot water into the snow melting tank, and from the inside of the snow melting tank. A cold water drainage pipe for discharging cold water, a wave generator for generating waves in the water in the snow melting tank, and provided on at least a part of the inner wall of the snow melting tank, one end of which is the wave making machine. It consists of a band-shaped beach in contact with the flow of the warm water, the wave generated by the wave generator, and the wave propagating through the beach to efficiently melt the snow mass thrown into the snow melting tank. It is characterized by

An embodiment of the snow melting apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an embodiment of the snow melting apparatus of the present invention, and FIG. 2 is a side view showing an embodiment of the snow melting apparatus of the present invention. In FIG. 1 and FIG. 2, reference numeral 1 denotes a snow melting tank in which a snow mass 2 is put and in which water is stored in advance, which is formed in a rectangular parallelepiped in this embodiment. 3 is a pump 4 for hot water such as sewage treatment water in the snow melting tank 1
Is a hot water supply pipe for supplying by. The outlet end 3A of the hot water supply pipe 3 is opened at the upper part of the inner wall of the snow melting tank 1 on the side of the wavemaker described later. Reference numeral 5 is a cold water drainage pipe for discharging the cold water in the snow melting tank 1 to the outside of the snow melting tank 1 via the weir 6.
The inlet end 5A of the cold water drainage pipe 5 is open to the lower part of the inner wall of the snow melting tank 1 facing the wave making machine.

Reference numeral 7 is a wave-making machine for generating waves in the water in the snow melting tank 1, and comprises a wave-making plate 7A and a driving machine 7B for reciprocating it. The wave generator 7 is provided in a pit 1A formed in the upper part of the snow melting tank 1 on the hot water supply pipe 3 side. 8 is a strip-shaped beach provided on both sides of the inner wall of the snow melting tank 1 and having one end in contact with the wave-making machine 7. The water depth in the longitudinal direction of the beach 8 is formed to be continuously shallow from one end of the beach 8 on the side of the wavemaker 7 toward the other end, and
The water depth of the beach 8 in the width direction is continuously deepened toward the center of the snow melting tank 1. The beach 8 is inclined to have such a water depth.

The hot water flowing into the snow melting tank 1 from the hot water supply pipe 3 becomes a hot water flow that flows in the traveling direction of the wave produced by the wave making machine 7. The warm water flowing in this way is used in the snow melting tank 1.
By exchanging heat with the snowflakes 2 inside, the water becomes cold water and is discharged from the cold water drain pipe 5 of the snow melting tank 1 to the outside. The water around the snowflakes 2 in the snowmelt tank 1 is effectively agitated by the hot water flow and the waves generated by the wavemaker 7, and as a result, the water flows between the snowflakes 2 and the water in the snowmelt tank 1. The heat exchange is accelerated and the snow melting is accelerated.

On the other hand, a part of the wave produced by the wave former 7 rises up on the beach 8 as a breaking wave, and gives an impact pressure effective to crush the snow mass 2 to the snow mass 2. Moreover,
The snow mass 2 on the beach 8 easily moves into the snow melting tank 1 because the beach 8 is inclined. Thus, even if a large amount of snow lumps 2 are thrown into the snow melting tank 1, the snow lumps 2 do not accumulate on the beach 8 and the waves generated by the wave maker 7 are always kept in the snow melting tank 1.
It can be propagated throughout.

According to the snow melting apparatus of the present invention having such a structure, the snow mass is efficiently melted in the following manner. That is, snow mass 2 transported by a truck or the like
When the snow melt 2 is put into the snow melting tank 1, the snow mass 2 is melted by the warm water in the snow melting tank 1, but the wave generated by the wave maker 7 and the effect of stirring the water in the snow melting tank 1 by the flow velocity of the warm water, and ,
It is more effectively melted by the erosion effect of the snow mass 2 caused by the waves generated by the wave generator 7. Here, the erosion effect means that a large number of holes are formed in the snow mass 2 in the snow melting tank 1 due to the waves, the surface area of the snow mass 2 is increased, and snow melting is promoted.

Next, the following experiment was conducted in order to investigate the snow melting effect of the snow melting apparatus of the present invention. 1 and 2
A rectangular snow melting tank 1 having a length of 1900 mm, a width of 1300 mm, and a depth of 900 mm as shown in Fig. 3 was constructed. In the snow melting tank 1
Water was injected to a depth of 650 mm. The initial water temperature is about
It was 10 ° C. Then, 10 ° C. hot water was supplied from the hot water supply pipe 3 into the snow melting tank 1 by the pump 4 at a flow rate of 7.5 l / min.

On the other hand, the cold water discharged from the cold water drain pipe 5 overflows from the weir 6 and is discharged to the outside of the snow melting tank 1. The wave generator 7 was installed in the pit 1A provided on the short side of the snow melting tank 1. The length of the wave-making plate 7A of the wave-making machine 7 was 600 mm. Then, the driving machine 7B continuously reciprocates the wave making plate 7A in the front-rear direction at a cycle of 1.3 seconds.

Two snowflakes 2 of 5 kg are placed in such a snow melting tank 1.
A total of 50 kg was thrown in at intervals and the snow melting speed was investigated.
As a result, the snow melting speed was 140 kg / h. Next, in order to investigate the snow melting effect by the waves, the wave generator 7 was stopped, only a hot water flow was generated, and the same amount of snow lumps 2 were put into the snow melting tank 1, and the snow melting speed was investigated. As a result, the snow melting speed is
It was 42 kg / h.

As a result of the above experiment, the efficient snow melting cannot be performed only by the hot water flow, but as in the present invention, the snow melting speed is significantly improved by using the wave and the hot water flow together.
It became clear that a quick snow treatment could be performed.

[0019]

As described above, according to the present invention, a large amount of snow can be collected by effectively utilizing the waste heat of the city such as sewage treatment water without damaging the cityscape or polluting the river. A useful effect such as efficient snow melting treatment is brought about.

[Brief description of drawings]

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

FIG. 2 is a side view showing an embodiment of the snow melting apparatus of the present invention.

[Explanation of symbols]

 1: Snow melting tank, 1A: Pit, 2: Snow mass, 3: Hot water supply pipe, 3A: Outlet end of hot water supply pipe, 4: Pump, 5: Cold water drain pipe, 5A: Inlet end of cold water drain pipe, 6: Weir, 7: Wave maker, 7A: Wave maker, 7B: Drive machine, 8: Beach.

Claims (3)

[Claims] 1. A snow melting tank in which water is stored in advance, into which snowflakes are charged, a hot water supply pipe for supplying hot water into the snow melting tank, and a cold water drainage for discharging cold water from the inside of the snow melting tank. From a pipe, a wave-making machine for generating waves in the water in the snow-melting tank, and a strip-shaped beach provided on at least a part of the inner wall of the snow-melting tank, one end of which is in contact with the wave-making machine. The snow melting apparatus is characterized in that the snow mass thrown into the snow melting tank is melted by the flow of the warm water, the wave generated by the wave generator, and the wave propagating through the beach. 2. The water depth in the longitudinal direction of the beach is formed to be continuously shallower from one end of the beach on the wavemaker side toward the other end, and the water depth in the width direction of the beach is the snowmelt. The snow melting device according to claim 1, wherein the snow melting device is formed so as to be deeper continuously toward the center of the tank. 3. The snow melting tank, wherein an outlet end of the hot water supply pipe opens to an upper part of an inner wall of the snow melting tank on the wave making machine side, and an inlet end of the cold water drain pipe faces the wave making machine. The snow-melting device according to claim 1, wherein the snow-melting device has an opening at a lower part of an inner wall of the snow.