JPH0340764B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a snow melting method and a snow melting device, and more particularly, the present invention relates to a snow melting method and a snow melting device. It consists of a method of mechanically crushing snow and contacting it with a large amount of airflow, and a first processing chamber and a second processing chamber for that purpose.The first processing chamber is equipped with a helical impeller and a nozzle, and the second processing chamber is The present invention relates to a snow melting device equipped with a rotating drum and a rotating repulsive impact plate.

(Prior Art) Measures against snow damage in snowy areas mainly focus on snow removal, and rotary vehicles, construction machinery, etc. are used, but the cost is enormous. In addition, in places where these machines cannot be used, manual labor is required, and transporting the removed snow is a big problem because there is no dumping site and it is expensive.

In addition to snow removal, snow melting methods include sprinklers on roads and spraying of low-melting point agents such as chloride, but these are not effective against large amounts of snow. Sprinklers in particular are a method of preventing snow from accumulating by scattering, but freezing becomes a problem in cold weather, and chloride spray water has a negative impact on surrounding fields.

Various other snow melting methods have been tried, such as the use of black carbon, hot water, heating, steam, and thermal foam, but the heat source is often based on oil quality fuel, etc., and the amount used is large, resulting in high costs. Not popular.

(Technical Problem) This invention has extremely high energy consumption efficiency, crushing the snow to be melted with pressure water, simultaneously absorbing moisture to increase the specific gravity, and mechanically crushing and dispersing the snow to further crush it. It is an object of the present invention to provide a snow melting method and a device thereof, which are characterized by bringing the snow into contact with a large amount of airflow.

(Technical Means) The present invention applies water spray and mechanical breaking force to the snow to crush snow chunks and increase the surface area, while at the same time melting and breaking snow crystals to reduce stickiness. This method uses a device that injects pressurized water into the snow, passes through a mechanical breaking device, and then completely melts the snow using a device that stirs the snow, water, and wind in the air.

(Example) Examples of the method and apparatus of the present invention will be described in detail below with reference to the drawings.

Reference numeral 10 designates a first processing chamber, in which a vertical rotation shaft 12 is provided in the center, and this vertical rotation shaft 12 is made of a thick-walled high-pressure pipe.
It is now possible to inject hot water or steam from the

Furthermore, a water discharging means (discharging water in the form of a spray) is provided (not shown) so that pressurized water is discharged from the canopy and the upper side wall of the first processing chamber 10 toward the center point from all directions.

Two mortar-shaped spiral impellers 14 and 16 are provided around the vertical rotation shaft 12 so as to overlap in the axial direction.

18 is a snow collection inlet.

Reference numerals 19 and 20 denote impact plates, which are provided at positions facing the upper impeller 14 and lower impeller 16 on the inner wall of the first processing chamber 10, and each of the upper and lower impellers 14 and 16 has four anti-wear impact teeth at their tips. are formed in an upper and lower cross shape, and the impact teeth of the lower impeller and the bottom partitions of the impact plates 18 and 20 on the wall are adjustable from 1 cm to 5 cm. The upper and lower impellers 14 and 16 rotate clockwise when viewed from above.

100 is a second processing chamber, a horizontal rotating drum 1
04, which communicates with the lower end of the first processing chamber 10 via a communication shutter 102 obliquely.

106 rotates horizontally. A rotating shaft is provided in the center of the second processing chamber 100, and the rotating drum 104 rotates slowly in the opposite direction to the rotating drum 104.
The horizontal rotation shaft 106 rotates at high speed.

Reference numeral 108 denotes a repulsion impact plate, which has a helical shape and is provided to rotate integrally with the horizontal rotation shaft 106.

110 is a water or snow scooping plate, and a rotating drum 10
The melted water and the shearbed-like snow that is not completely melted at the bottom of the drum 4 are transported upward from the bottom by rotating together, and are caused to fall onto the repulsive impact plate 108 from above.

Reference numeral 112 is a Shirotskov fan that sends a large amount of air into the rotating drum 104. This airflow hits a conical partition wall 114 provided on the inner wall surface of the rotating drum 104 so as to protrude in the direction of the blower pipe 113, reverses itself, and passes through the inside of the repulsive impact plate 108 again to the rear end of the rotating drum 104. The air flows through the ventilation pipe 116 and is circulated again to the Sirotskov fan 112 by the pump 116.

14, 105, and 107 are drive motors for the vertical rotation shaft 12, the rotation drum 104, and the horizontal rotation shaft 106, respectively.

200 is a treated water storage tank, and a rotating drum 10
4. Store the overflow water. The treated water may be led from the top of the storage tank 200 through a pipe 202 to the vertical rotation shaft 12 of the first treatment chamber 10 or to the nozzle on the canopy and upper inner wall.

(Function) The snow melting device according to the present invention is configured as described above, and when snow is accumulated using a rotary vehicle or a screw auger and is introduced into the first processing chamber 10 from the snow collection input port 18, the snow melting device according to the present invention is Pressure water is discharged from the canopy and upper side walls of the first processing chamber 10, and most of the collected snow is crushed by the pressure of this pressure water, and at the same time, it expands due to moisture absorption. Furthermore, especially when the temperature drops significantly, hot water or steam is injected from the nozzle of the vertical rotating shaft 12.

The snow that is destroyed by this water pressure, absorbs moisture and expands, becomes a powerful whirlpool rotating to the right due to the high-speed rotation of the upper and lower impellers 14 and 16, and is rubbed by strong friction and squeezing due to impact and blows. The jelly becomes a shearbet shape and moves to the next step, where it is further crushed into fine pieces by the diffusion blowing blade 22 and transferred to the second processing chamber 100.

In the second processing chamber 100, a rotating drum 10
Melt water and unmelted shearbet-like snow that have fallen to the bottom of the plate 4 are carried upward from the bottom by the respective scooping plates 110, and the repulsive impact plate 1
It falls on top of 08 and scatters, and then Shirotskovan 12
There are various types of objects, such as objects that are accelerated upwards and sideways by the wind and fall through space, objects that are blown away by centrifugal force, and objects that collide with each other with intense force.

Furthermore, the pressure inside the rotating drum 104 creates a storm inside the drum.

That is, the shearbed-like snow that has passed through the first processing chamber 10 is moved to the repulsion impact plate 10 in the second processing chamber 100.
8, it is hit, shattered, and thrown through space with centrifugal acceleration.

Snow and water that have fallen to the bottom of the rotating drum 104 move from the bottom to the top and from the top to the repulsive impact plate 108 as the drum rotates, and are further finely divided by centrifugal acceleration and collision of the falling materials in space. The crushed surface area increases and the wind contact melts and completely dissipates the snow.

In addition, we actually conducted a snow melting experiment and obtained the following experimental results.

The configuration of the snow melting equipment used was a vertical casing with a diameter of 600 mm and a height of 800 mm as the first processing chamber, a circular horizontal rotating drum with a diameter of 900 mm and a length of 1200 mm as the second processing chamber, and the power of the impeller was 10 Kw. A 5Kw motor was used as the power for the motor and repulsion striking plate. Water pressure pump 10Hp that sends out pressure water,
The pressure is 10Kg, and the air volume of the Sirotskov fan is ^73m3 to ^1800m3 .

Experiment 1 At an outside temperature of +2°C, approximately 1 ton of snow, equivalent to one 4-ton truck for snow collection, was put into the above snow melting device, and the time from the start of the introduction until all of the snow melted was measured. The snow quality is wet snow.

The above 1 ton of snow was put into a snow melting device using a snow blower and melted. It took about 20 minutes to add all the snow, and about 23 minutes to melt the snow.

One ton of snow was manually put into the snow melting equipment using a scoop and melted. In this case, it took about 40 minutes to add all the snow and 40 minutes to melt it.

In this experiment, the snow was thrown in manually, so the amount of snow thrown in was small compared to the snow melting capacity of the equipment, and the snow melted almost instantly, so the time it took to put the snow in was the time required for it to melt.

Because wet snow was used in the experiment, the snow melting device had a high ability to melt snow, and snow was effectively melted without using hot water or hot air. In this experiment, tap water was used, and a blower was used to blow air at outside temperature.

Experiment 2 At an outside temperature of -5°C, one 4-ton truck's worth of snow was put into the snow melting device and the snow melting time was measured in the same manner as in the above experiment. The snow quality is dry and smooth. In this experiment, hot water heated to 26°C with a burner was used as pressurized water, and warm air at 15°C was sent out from a blower.

The 1 ton of snow mentioned above was put into the snow melting device using a snow blower. It took about 8 minutes to put the snow in, and about 10 minutes to melt the snow. This experiment consisted of 4
I went there twice with snow brought in by truck.

The hot water and hot air were circulated, and excess water was sprayed. From the above experimental results, it was confirmed that even when the outside temperature is below 0° C., effective snow melting can be achieved by using this snow melting device.

(Effects) As described above, according to the snow melting method and snow melting device according to the present invention, water is forcibly penetrated into the snow by spraying pressure water, and mechanically crushed to prevent contact with the outside. Efficient snow melting can be achieved by increasing the surface area and repeating blows, shocks, and diffusion while contacting airflow. In addition, by processing the entire apparatus in a processing chamber that is shut off from outside air and suppressing radiated heat, remarkable effects such as excellent thermal efficiency are achieved.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

The drawing is an explanatory view of the internal structure of an embodiment of the device according to the present invention. 10...First processing chamber, 11...Nozzle, 12...
...Vertical rotation axis, 14, 16... Impeller, 18...
...Snow collection inlet, 19,20...Impact plate, 22...
Diffusion blowing blade, 100...Second processing chamber, 102...
...Communication shooter, 104...Rotating drum, 106
...Horizontal rotation axis, 108...Repulsion striking plate, 110
...Scooping board, 112...Shirotskov fan, 113
...Blower pipe, 114...Partition wall, 14,1
05, 107... Drive motor, 200... Treated water storage tank, 202... Pipe, 116... Ventilation pipe.

Claims (1)

[Claims] 1. The snow to be melted is crushed with pressure water, at the same time it absorbs moisture to increase its specific gravity, is further crushed mechanically, is dispersed to further crush it, and is brought into contact with a large amount of airflow. Snow melting method. 2 Consisting of a first processing chamber having a snow collection inlet and a second processing chamber following the second processing chamber, the first processing chamber is provided with a vertical rotation shaft rotated by a rotation drive unit, and this vertical rotation A mortar-shaped spiral impeller is provided around the shaft, and the first
The inner wall of the processing chamber is provided with a water discharge means for ejecting pressurized water toward the center, and the inner wall of the first processing chamber is provided with an impact plate that faces the impeller and rubs water-containing snow with the rapid rotation of the impeller. The second processing chamber is provided with a horizontal rotating shaft that rotates at high speed in the opposite direction to the rotating direction of the rotating drum at the center of the rotating drum that rotates with its axis in the horizontal direction, and this horizontal rotating shaft has a helical shape. A repulsive impact plate is provided inside the rotating drum, and the melt water and hydrated snow accumulated on the bottom side of the rotating drum are scooped upward by the rotation of the rotating drum and dropped onto the repulsive impact plate from above. A snow melting device that is equipped with a scooping plate that repeatedly hits and spreads the snow, and that a blower device is guided into the rotating drum.