JPH07171443A - Sprinkled quantity regulator of sprinkler nozzle in surface snow melting device - Google Patents

Abstract

PURPOSE:To provide a sprinkled quantity regulator of a sprinkler nozzle in a surface snow melting device which the water quantity is properly regulated. CONSTITUTION:A valve spindle 2 is attached freely ascendable and descendable to a snow melting nozzle body 5. The lower end of the valve spindle 2 is inserted into a water hole 9 made in the middle of the snow melting nozzle body 5. Valve orifices are made to communicate with a water passage 14 made in the valve spindle 2, and opened to the right and left of the peripheral surface of the valve spindle 2, and given a slight difference in height. The higher valve orifice is formed into a potbelly, etc., or broadens downwards at least up to the middle. Since the top part whose width is gradually reduced is formed into a bent edge projecting upwards, sprinkling is not interrupted even if the valve orifices are extremely narrowed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the amount of water sprayed by a water spray nozzle in a road surface snow eliminator.

[0002]

2. Description of the Related Art A sprinkling nozzle is provided with a water amount adjusting device for sprinkling a substantially constant amount of water at a substantially constant height, both at a position far from a pump and at a position close to the pump. .

The water amount adjusting device having various structures is adopted, and the applicant has already applied for valves having various structures.

For example, instead of a two-piece style in which a valve cylinder having a lateral hole is vertically installed, and a valve rod is provided in the valve cylinder so as to be able to move up and down to open and close the lateral hole, the two-piece style is not used. Japanese Patent Application No. Sho 62-
No. 184609 was developed. This valve mechanism employs a structure in which the amount of water spray is adjusted by widening the facing gap between the opening edge a of the water passage hole and the valve slope b of the valve rod by raising and lowering the valve rod. When I tested this valve rod, if I reduced the amount of water sprayed to save water, in other words, if the water discharge distance was shortened, the water would be discharged at first, but after a while, the water discharge would be poor, and I could not maintain the narrowed water discharge. I confirmed that there is a drawback that it may stop or stop.

As a result of repeatedly examining the cause by repeating the test, the phenomenon occurs occasionally when the slits A and B in FIG. 5 become about 0.5 mm, and this phenomenon always occurs when the slit becomes 0.2 mm narrower than that. It was found that when the slit became extremely narrow in order to reduce the amount of water discharged, a water flow phenomenon occurred that resisted trying to suddenly press water into a narrow place from a wide place, and therefore the water flow smoothly. It is concluded that is not introduced.

Besides, of course, fine particles such as iron are present in the water, and these fine particles block the slits, and at the same time, dust, debris, reds, etc. also promote the blockage, so that a poor water discharge phenomenon occurs in a shorter time. I thought it would be presented.

[0007] Then, when the valve opening is present on the entire circumference, it is necessary to narrow down the opening to that extent.

[0008] Therefore, the applicant has the above-mentioned drawbacks because if the area of the valve mouth for securing the minimum water discharge amount is gathered in one place when restricting the water quantity by gradually narrowing the valve mouth, the area of the gathered area becomes large. It was judged that it could be solved, and as a result of a test, it was confirmed that the idea was correct, and the present invention was completed by finding the shape of the valve port that allows as much water as possible to flow even when squeezed.

[0009]

The gist of the present invention will be described with reference to the accompanying drawings. The valve rod 2 is provided so as to be vertically movable in the vertical direction of the central portion of the snow-melting nozzle body 5, and the lower end of the valve rod 2 is fitted and inserted into a water passage hole 9 provided in the middle of the snow-melting nozzle body 5 to be attached to the valve rod 2. It communicates with the water passage 14 provided and opens on the left and right sides of the circumference of the valve rod 2.
In addition, the shape of the higher valve opening 1'with a slight height difference is formed in a shape that widens downward toward at least the middle, and a gradually narrowing top is formed in a curved edge protruding upward. The present invention relates to a spray amount adjusting device for a spray nozzle in a road snow eliminator.

[0010]

When the valve rod 2 whose lower end is inserted into the water passage hole 9 is gradually lowered to gradually squeeze the valve opening 1.1 ', the amount of water discharged from the valve opening 1.1' Gradually decreases.

At this time, the shape of the valve opening 1'to be narrowed is changed to the valve opening 1 '.
The water flow rate changes drastically even if the degree of descent is small, because the shape is widened toward the bottom.

If the shape of the valve opening 1'is made wider toward the lower end, the shape of the top becomes narrow and the above-mentioned drawback of extremely narrowing down is present.

In this respect, according to the present invention, for example, as shown in FIGS. 2 and 3, the top portion of the valve opening 1'is formed into a curved edge projecting upward, so that the valve opening 1'can be extremely narrowed down.
The opening of does not become extremely narrow. That is, it does not become extremely narrow like 0.2 mm as shown in FIG.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of FIG.
A water sprinkling hole 7 communicating with the snow-discharging nozzle body 5 is provided at a lower portion of the snow-discharging nozzle body 5, and the water-supplying hole 8 and the rectifying chamber 6 are communicated with each other by a water-passing hole 9 to form a top wall of the snow-discharging nozzle body 5. Is provided with a valve rod fitting insertion hole 10, a receiving hole 11 is provided above the water passage hole 9, a female screw 12 is provided on an inner peripheral surface of the water passage hole 9, and a male screw 13 is provided at a lower portion of the valve rod 2. A notched groove-shaped water passage 14 that connects the water passage 9 and the flow straightening chamber 6 is formed on the peripheral surface of the male screw 13 by changing the height of the top portion, and the valve rod 2 is inserted into the valve rod fitting insertion hole 10. Then, the male screw 13 is screwed to the female screw 12, and the valve port 1 and the upper end of the water passage 14 and the opening edge of the receiving hole 11 are connected.
The case where 1'is formed is illustrated.

Water is sprinkled from the water spouting hole 7 through the water supply pipe 18, the water passage hole 9, the water passage 14, the valve ports 1.1 'and the rectifying chamber 6.

In the figure, reference numeral 15 is a locking groove, 16 is a cover material, and 17 is an O-ring.

In FIG. 4, a snow straightening chamber 6 is formed on the upper portion of the snow removing nozzle body 5, and a valve screw hole 19 communicating with the straightening chamber 6 is provided at the top of the snow removing nozzle body 5 to provide a snow removing nozzle body. 5, a water feed hole 8 is provided below the water feed hole 8 and a valve insertion hole that connects the water feed hole 8 and the flow straightening chamber 6
20 is provided, a male screw 13 ′ that is screwed into the valve screw hole 19 is formed on the upper outer peripheral surface of the valve rod 2, a water chamber 21 is provided at the center of the valve rod 2, and a water chamber 21 is provided at the top of the valve rod 2. A water spouting hole 7 communicating with the valve rod 2 is formed in the central portion of the valve rod 2, and a water passage hole 22 communicating with the flow straightening chamber 6 and the water chamber 21 is formed in the central portion of the lower portion of the valve rod 2. The water passage 23 is bored, and the lateral water passage 24 in the shape of a lateral hole is bored in the water passage 23 at different heights to form the water passage 14. The valve ports 1 of the respective lateral water passages 24 are formed.
The case where 1'is provided on the peripheral surface of the valve rod 2 with different heights is illustrated.

Water is sent through the water pipe 18, the valve insertion hole 20, the vertical water passage 23, the horizontal water passage 24, the valve port 1.1 ', the straightening chamber 6, and the water passage hole 22, the water chamber.
Water is sprinkled from the sprinkling hole 7 through 21.

In the figure, reference numeral 25 is a turning groove, and 26 is a hole closing member.

As shown in FIG. 2, the shape of the valve ports 1 and 1 ′ is such that the opening shape is a substantially triangular divergent shape and the apex is formed in an arc shape which curves upward, or as shown in FIG. You may make it a daruma shape with the upper part protruding a little.

The internal structure of the snow-melting nozzle body 5 can be modified in various ways.

[0022]

Since the present invention is constructed as described above, when the amount of water discharged is reduced to save water, the area of the valve opening gradually becomes smaller and the upper corner portion becomes a curved surface, resulting in an extremely slit. Since it does not become narrower and maintains a constant amount of water discharge, it serves as a water spray amount adjustment device for water spray nozzles in a road snow eliminator that does not interrupt or stop water discharge as in the past.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of the present invention.

FIG. 2 is a front view showing two examples of the valve port of the present invention.

FIG. 3 is a front view showing two examples of the valve port of the present invention.

FIG. 4 is a vertical sectional view of another example of the present invention.

FIG. 5 is a cross-sectional view of a main part of a conventional water spray nozzle for snow removal on a road surface.

[Explanation of symbols]

 1'valve opening 2 valve rod 5 snow-melting nozzle body 9 water passage hole 14 water passage

Front page continued (72) Inventor Yoshiki Asano 3-5 Minamishinbo, Sanjo City, Niigata Prefecture (72) Ryojiro Asano 6-8 Minamishinbo, Sanjo City, Niigata Prefecture (72) Inventor Kanjo Asano Sanjo, Niigata Prefecture No. 3-5, Minamishinpo, Ichi (72) Kinji Asano No. 3-5, Minamishinbo, Sanjo City, Niigata Prefecture

Claims (1)

[Claims] 1. A snow bar is provided on a valve rod so that the valve rod can be moved up and down in the vertical direction of the center of the snow rod, and the lower end of the valve rod is fitted into a water passage provided in the middle of the snow nozzle body. Open to the left and right of the circumference of the valve rod, and with a slight height difference, the shape of the higher valve mouth is expanded downward toward the middle, and gradually widens. A sprinkling amount adjusting device for a sprinkling nozzle in a road surface snow eliminator, characterized in that a tapered top portion is formed on a curved edge projecting upward.