JP2000352025A - Water sprinkling mechanism for snow melting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sprinkle snow melting water uniformly into a casing containing snow to be melted in order to solve the problem that the snow is formed hollow and not melted easily in an existing buried type snow melting machine even when hot water is sprinkled on snow charged into the casing. SOLUTION: This device is so formed that snow melting water is heated by a first heat exchange part 22, fed to a water sprinkling tube 42 by a submerged pump 28, and sprinkled as shower into a casing. Thus, the water sprinkling tube 42 rotates within the rotating range of a crank 47 fixed movably together with the water sprinkling tube 47 by the rotation of a flange 46 connected to a drive shaft of a geared motor 45 and a pin 42a installed in a flange 46, and the rotating water sprinkling tube 42 discharges, as shower, the snow melting water fed within the range into the casing 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water sprinkling pipe provided in a snow melting apparatus, and more particularly to a snow removing apparatus including a buried drainage tank for snow removal and snow removal in a snow-covered area, a snow melting section and a heating section separately provided therefrom. Watering mechanism for

[0002]

2. Description of the Related Art As a result of an investigation conducted by the inventor of the present invention, a name "buried snow melting apparatus" has been disclosed in Japanese Patent Application Laid-Open No. 3-293413. According to the description of the claims, the device is described as "a box having an open top and a casing buried in the ground, and a snowmelt defined in the casing and having an upper opening serving as a snow inlet. A water tank, a flat lid provided on the casing to open and close a snow inlet of the snow melting water tank, and a burner connection port provided on the-side in the snow melting water tank, and an exhaust port on the other side. A boiler having a bent part in the middle thereof, a burner located in the casing and connected to the burner connection port, and a side disposed at an upper part in the snow melting water tank along an inner wall of the casing. Part watering pipe,
An upper part whose base end is rotatably connected to the middle of the side water sprinkling pipe so that the nozzle port protrudes above the snow inlet with the nozzle opening downward when standing up, and is stored in the snow melting water tank when it falls down. A watering pipe, a water supply pump provided in the snowmelting water tank for pressurizing and supplying hot water in the snowmelting water tank to the upper watering pipe and the side watering pipe; And a drain for discharging more than the amount of snowmelt water. "

[0003] JP-A-3-293413 (2)
The page states, `` Since the sprinkler pipe blows hot water only from the side onto the snow put in the casing, only the blown part of the hot water melts and turns into water, forming a cavity in the snow, The sides will be hardly melted and a so-called bridging phenomenon will occur. "

[0004]

The conventional buried type snow melting machine has a structure in which water injected into a casing from a water sprinkling pipe or a water sprinkling port disposed on an inner wall or an inner surface of an opening lid is heated from the side and above or from above and from the side. However, if the sprinkling port is fixed, it cannot be spread evenly on the snow, and the unsprayed portion of the snow is hollowed out and does not melt easily, resulting in extremely poor snow melting efficiency. When a large amount of snow is thrown into the casing, the temperature of the boiler water drops due to the melting of snow, and the water vapor in the combustion gas in the boiler combustion chamber (inside the can) comes into contact with the boiler water on the outer wall and forms dew water on the inner wall of the can. Corrode. Since the buried snow melting machine melts snow in a short time and repeatedly uses snow, the boiler is equipped with a burner with a large heat output. When a burner having a large heat output is burned in a small combustion chamber, high-temperature exhaust gas is released into the atmosphere, resulting in poor efficiency. When snowmelt water is used as boiler water, fine earth and sand is mixed in and accumulates at the bottom of the casing inside the boiler, causing overheating and empty firing of the combustion chamber, and extremely shortening the life of the boiler. When a boiler is built in the casing and buried underground,
Dew due to a temperature difference from the outside air, water spraying for snow melting causes rust on the burner drive unit (motor) and electrical components for control, resulting in poor rotation and insulation deterioration.

[0005]

An object of the present invention is to spray snowmelt water supplied from a submersible pump of a snowmelting apparatus comprising a heating unit, a drainage tank and a snowmelt tank through a water spray pipe into a casing filled with snow by the water spray pipe. In the apparatus, a flange provided with a pin at an edge is rotatably mounted on a drive shaft of a geared motor, and a mounting portion on a ring is formed at one end, and a portion protruding from the mounting portion has an inside. A crank having a movable slot formed with a pin is disposed with a pin rotatably mounted on a drive shaft of a geared motor positioned in the slot, and when snowmelt water is passed through the watering pipe and the drive shaft starts rotating. A water spray mechanism for a snow melting apparatus, characterized in that a crank is driven by a pin and rotates within a range of approximately 60 °, and a shower is sprayed into a casing from a water spout of a water sprinkler driven by the pin. It is solved by providing.

[0006]

According to the present invention, snowmelt water discharged from the snowmelt tank heated in the first heat exchanging section of the drainage tank is sprayed toward the casing by a water spray pipe rotating within a predetermined angle range. The water is averaged to every corner of the casing by the reciprocating rotation of the water pipe, so that almost all the snow in the casing is melted.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS To explain the outline of the present invention, in order to efficiently carry out snow melting, it is necessary to crush snow, which is a piece of ice containing a large amount of air, and to contact each piece of ice with water (or hot water). is important. As a means for crushing the snow, water is uniformly sprayed on the snow put into the snow melting tank (casing). For this purpose, the length of the casing in the longitudinal direction is provided on the inner surface of the opening lid of the casing which is opened and used at the time of snow melting. Attach a sprinkler tube with a large number of sprinkler ports of the same or slightly longer length, pump the snowmelt water heated in the drainage tank into the sprinkler tube using a submersible pump, and turn the sprinkler tube repeatedly to change the casing from the front end to the rear end. Sprinkle water evenly and vigorously from the sprinkler, crush the snow and melt.

FIG. 1 is a piping diagram of a snow melting apparatus according to the present invention. In FIG.
Denotes a drain tank, and 30 denotes a snow melting tank.

The heat medium heated in the boilers 11a and 11b (the traveling direction is indicated by a black arrow in the figure) passes through a heat medium pipe 12 by a circulation pump 14 and passes through a valve 13,
The heat is passed through the heat exchanger 24 via the header 16, the control valve 25, and the thermometer 26. Reference numeral 15 denotes a drain port of both boilers.
The control valve 25 controls the flow rate of the heat medium, and the thermometer 26 detects the temperature of the heat medium entering the heat exchanger 24.

[0010] The heat medium flowing out of the first heat exchange section 22 then goes out of the drainage tank 20 and enters the snow melting tank 30 through the inlet 12b.
After passing through the second heat exchanging part 32 arranged at the bottom of the casing 31 of the snow melting tank 30 and exchanging heat with snow or snow melting water in the casing 31 to lower the temperature, after exiting the snow melting tank 30 from the outlet 12c. Then, the heat is returned to the boiler 11a and the boiler 11b by the return heat medium pipe 12, and is heated. The heating medium is like this
The boilers 11a and 11b → the first heat exchange section 22 → the second heat exchange section 32 → circulate through the boiler path.

The snowmelt water heated by the second heat exchanger 32 in the snowmelt tank 30 and the water discharged from the sprinkler pipe 42 pass through the snowmelt water pipe 27 and the trash collector 29 of the drain tank through the snowmelt water inlet 29b. A part of this snowmelt water is filtered by a filter 23 as shown by a white arrow, sent to a water storage section 21, and then enters a first heat exchange section 22 where it is heated and heated. Is pumped by a submersible pump 28 to a sprinkling pipe 42 of the snow melting tank 30 via a three-way switching valve 49 and a swivel joint 41. The remaining snowmelt water is drained from the drain outlet 27a to the sewage or the like through the sewage pipe 27b as shown by the white arrow.

The submersible pump 28 pumps the snowmelt water heated in the first heat exchange section 22 and flowing in the direction of the white arrow to the watering pipe 40. The water sprinkling pipe 40 is connected to two water sprinkling pipes 42 supported by bearings 48 via swivel joints 41, and 10 liters of snowmelt per minute is showered from the water sprinkling port 43 of the water sprinkling pipe.
It is released as 4. Watering port 43 is one watering pipe 42
The sprinkling ports 43 of the two sprinkling pipes are arranged at substantially equal intervals and alternately so as not to overlap. The heating by the first heat exchange unit 22 of the snowmelt water prevents the temperature of the heated snowmelt water from exceeding 30 ° C. The reason is that the heat radiation loss is minimized, and the outside temperature of the snow melting site is 0 ° C. or less, which is about -5 ° C. on average. It is.

FIG. 2 is a perspective view showing a snow melting tank 30 used in the present invention. In the drawing, the same portions as those shown in FIG. 1 are denoted by the same reference numerals, 33 is a side plate, 34a is a front plate, and 34b is a rear plate. , 3
5 is a heat insulating material having a thickness of about 50 mm, 36 is a lid, and 39 is a second
The sprinkler pipe 42 and its attached parts are attached to the lid 36 by broken lines indicating the position of the heat exchange unit. The width of the lid 36 is larger than the width of the casing 31, and when the lid 36 is closed, the inside of the casing is sealed. The dimensions of the casing 31 are 4051 mm in width, 2000 mm in depth, and 500 mm in height without heat insulating material. Watering pipe 4 shown in FIG.
The arrangement of the sprinkler 0, the geared motor 45, the flange 46, and the crank 47 is shown in the enlarged perspective view of FIG.

FIG. 4 is an enlarged sectional view showing a connecting portion between the water sprinkling pipe 40 and the water sprinkling pipe 42 shown in FIGS. 2 and 3.
The same parts as those shown in FIG. 3 are denoted by the same reference numerals.
One end of a water sprinkling pipe 42 inserted into the swivel joint 41 is provided with a sealing O so that heated snow-melting water does not leak even during rotation.
A groove for two rings 41a, a sprinkler pipe 42 and a swivel joint 4
A groove for a joining screw 41b for rotatably joining 1 is formed. For connection of the water sprinkling pipe 40 to the water sprinkling pipe 42, a hose band 40a, a hose port 40b, and a male elbow 40c are used.

With the above construction, the sprinkling pipe 40 is connected to the sprinkling pipe 42 via the swivel joint 41, the geared motor 45 is disposed between the bearing 48 and the swivel joint 41, and the flange 46 is mounted on the drive shaft 45a of the geared motor 45. Has been fixed. Here, when the arrangement of the flange 46 as viewed in the longitudinal direction of the sprinkler pipe 42 is viewed in FIG. 5, a crank 47 rotatably attached via a pin 42 a attached to the flange 46.
The ring-shaped mounting portion 47a is fixed to the sprinkler pipe 42, and a portion extending from the mounting portion 47a has a pin 42a.
A slot 47b through which the air flows. FIG.
, The same parts as those shown in FIGS. 1 to 4 are denoted by the same reference numerals. With such a configuration, the snowmelt water supplied through the water sprinkling pipe 40 is supplied to the water sprinkling pipe 42, and FIG.
As shown in (2), the water is sprayed from the water outlet 43 into the shower 44 to the snow in the casing 31.

FIG. 5 shows a link mechanism for rotating the sprinkler pipe 42. When the flange 46 rotates in the counterclockwise direction (the rotation direction may be either direction) indicated by the arrow A following the driving of the geared motor 45, the center P of the pin 42a moves counterclockwise from the position indicated by the solid line in the figure. The crank 47 indicated by the solid line moves in the direction of arrow A along the dashed line, and the crank 47 indicated by the solid line also moves in the direction of arrow A counterclockwise accordingly. Pin 42
When a comes to the position shown by the point T, the crank 47 comes to the position shown by the two-dot chain line in the figure. When the flange 46 further rotates and the pin 42a reaches the position indicated by n on the left end of the slot 47b, the crank 47 returns to the position indicated by the solid line in the figure. Following the rotation of the flange 46, the pin 42a rotates in the direction shown by the arrow B to the position shown by the point T ', and the crank 47 moves toward the position shown by the two-dot chain line in the lower part of the figure. When the flange 46 continues to rotate, the crank 47 returns to the position shown by the solid line,
Thereafter, the same movement is repeated. During this time, the snowmelt water is discharged from the sprinkling port 43 of the sprinkling pipe 42 as a shower. In this way, when the common center point of the sprinkler pipe 42 and the mounting portion 47a of the crank is indicated by G, the sprinkler pipe 42 is indicated by a line connecting the point G and the point T 'as well as a line connecting the point G and the point T. Almost 60
Rotate within the range of °. This movement of the water pipe 42 causes the shower 44 to move the front plate 3 of the casing 31 of FIG.
The amount of water spraying increases along the portion 4a and the rear plate 34b, and the snow in the casing 31 is sprayed almost on average.

[0017]

As described above, according to the present invention,
Sprinkler pipe 42 attached to lid 36 of casing 31
While rotating, the heated snowmelt water supplied by the submersible pump 28 is evenly sprayed into the casing 31 as the shower 44, so that the snow in the casing 31 is sprinkled on average, and the function of the snowmelt is efficiently performed. The effect of being fulfilled is obtained. Although two sprinkling pipes 42 are shown in the illustrated example, the number of sprinkling pipes may be one, and even in such a case, the above-described functions and effects are achieved. Although it is possible to arrange more than two, it would be problematic in terms of cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a piping system of a snow melting apparatus developed by the present applicant.

FIG. 2 is a perspective view showing a drainage tank and a snow melting tank of the apparatus shown in FIG.

FIG. 3 is an enlarged perspective view showing a connection portion between a sprinkling pipe and a sprinkling pipe shown in FIG. 2;

FIG. 4 is a cross-sectional view showing a connection portion between the sprinkling pipes and the sprinkling pipes shown in FIGS.

FIG. 5 is a cross-sectional view of the arrangement of the flange and the water sprinkler in a longitudinal direction of the water sprinkler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heating part 11a 1st boiler 11b 2nd boiler 12,12a Heat medium piping 12b Inlet 12c Outlet 13 Valve 14 Circulation pump 15 Drainage port 16 Header 20 Drainage tank 21 Water storage part 22 First heat exchange part 23 Filter 24 Heat exchanger 25 Control valve 26 Thermometer 27 Snow-melting water pipe 27a Drain outlet 27b Sewage pipe 28 Submersible pump 29 Garbage collector 29b Snow-melting water inlet 30 Snow-melting tank 31 Casing 32 Second heat exchange section 33 Side plate 34a Front plate 34b Rear plate 35 Thermal insulation 36 Cover 39 Dashed line indicating the position of the second heat exchange section 40 Sprinkling pipe 40a Hose band 40b Hose port 40c Male elbow 41 Swivel joint 41a O-ring 41b Joining screw 42 Sprinkling pipe 42a Pin 43 Sprinkling port 44 Shower 45 Geared motor 45a Drive shaft 46 Flange 47 No. 47a mounting portion 47b slot 48 bearing 49 three-way valve

Claims (1)

[Claims] 1. A submersible pump (28) for a snow melting apparatus comprising a heating section (10), a drain tank (20) and a snow melting tank (30).
In the apparatus for sprinkling snowmelt water supplied through a water sprinkling pipe (40) from a sprinkling pipe (42) into a casing (31) filled with snow, a flange (46) provided with a pin (42a) at an edge portion is provided. A mounting portion (47a) on a ring is formed at one end so as to be rotatably mounted on a drive shaft of the geared motor (45), and a pin (42) is protruded from the mounting portion.
The crank (47) in which a) is formed with a movable slot (47b) is provided with a pin (42a) rotatably attached to a drive shaft (45a) of a geared motor (45).
When snowmelt water is passed through the watering pipe (42) and the drive shaft (45a) starts rotating, the crank (47) is driven by the pin (42a) and rotates within a range of approximately 60 °. And a shower (44) is sprayed into a casing (31) from a water spout (43) of a water sprinkler pipe (42) driven by the sprinkler pipe (42).