JP2652273B2 - Sprinkling water amount adjustment device of watering nozzle in road surface snow removal equipment - Google Patents

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 on a water spray nozzle in a snow removal device for a road surface.

[0002]

2. Description of the Related Art The watering nozzle is provided with a water amount adjusting device so that a substantially constant amount of water is sprayed at a substantially constant height at a position remote from the pump and also near the pump. .

[0003] Various types of structures have been adopted for the water amount adjusting device, and the applicant has already applied for valves having various structures.

[0004] For example, instead of a two-part style consisting of a valve cylinder and a valve rod which are provided with a valve rod having a horizontal hole and vertically provided with a valve rod movable up and down to open and close the horizontal hole, a fifth valve rod is provided. Japanese Patent Application No. Sho 62- one-piece style in which only the valve rod is suspended as shown in the figure
184609 was developed.

[0005] This valve mechanism adopts a structure in which the facing gap between the opening edge of the water passage hole and the valve slope B of the valve rod is adjusted in a wide and narrow manner by raising and lowering the valve rod to adjust the amount of water spray. While testing this valve rod, if the amount of water sprayed was relatively small to save water, in other words, if the water discharge distance was shortened, water would be discharged at first, but after a while the water discharge would be poor, and the water could not be maintained as it was squeezed. It was confirmed that there was a drawback that it stopped or stopped.

As a result of repeating the test for various reasons and examining the cause, this phenomenon sometimes occurs when the slits (a) and (b) in FIG. 5 become about 0.5 mm, and this phenomenon always occurs when the slit becomes narrower than about 0.2 mm. The reason is that if the slit becomes extremely narrow in order to reduce the amount of water discharge, a water flow phenomenon occurs that resists trying to press water from a wide place into a narrow place suddenly, so that the water flow smoothly Was not introduced.

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 and scales promote the blockage. It is assumed that it will be presented.

[0008] Then, when the valve port is present on the entire periphery, it has been found that the valve must be narrowed down accordingly.

In order to secure the minimum amount of water discharge when regulating the amount of water by restricting the amount of water by narrowing the valve opening gradually, the applicant increases the area where the valve opening is gathered. Judging that the problem could be solved, the test confirmed that the concept was correct, and found out the shape of the valve port through which an appropriate amount of water could flow as much as possible even when squeezed, and completed the present invention.

[0010]

The gist of the present invention will be described with reference to the accompanying drawings.

The valve rod 2 extends vertically in the center of the snow-removal nozzle body 5.
Is provided so as to be able to move up and down, and the lower end of the valve rod 2 is
Of the fitting inserted water passage hole 9 provided in the middle, allowed communicates the water path 14 provided on the left and right of the water passage hole 9 and the valve stem 2, the left and right
Open the upper part of the water passage 14 to the left and right of the peripheral surface of the valve rod 2 and open the valve.
The mouth is formed, and a level difference is provided between the left and right valve ports 1.1 ′ ,
The shape of the higher valve port 1 ′ is formed so as to diverge downward at least up to the middle of the valve port and at the opposite side.
Those of the water spray amount adjusting device of the watering nozzle in the road snow melting apparatus, characterized in that the top gradually width becomes narrow located above and formed on the curved edge that protrudes upward than the valve port 1 .

[0012]

When the valve rod 2, the lower end of which is inserted in the water hole 9, is gradually lowered to gradually narrow the valve port 1.1 ', the amount of water released from the valve port 1.1' is reduced. Gradually decreases.

At this time, the shape of the valve port 1 'to be narrowed is changed to the valve port 1'.
Has a downwardly divergent shape, so that even if the degree of descent is small, the flow rate of water greatly changes.

If the shape of the valve port 1 'is made to diverge downward, the shape of the top portion becomes narrow, which has the disadvantage of extremely narrowing down.

In this respect, as shown in FIGS. 2 and 3, for example, as shown in FIGS. 2 and 3, the top of the valve port 1 'is formed as a curved edge protruding upward.
Opening does not become extremely narrow. That is, the width does not become extremely narrow like 0.2 mm as shown in FIG.

[0016]

Next, an embodiment will be described in detail.

The valve rod 2 extends vertically in the center of the snow-absorbing nozzle body 5.
Is provided so as to be able to move up and down, and the lower end of the valve rod 2 is
Into the water hole 9 provided in the middle of the
2 and the water channel 14 provided on the left and right
Open the upper part of the water passage 14 to the left and right of the peripheral surface of the valve rod 2 and open the valve.
The mouth is formed, and a level difference is provided between the left and right valve ports 1.1 ′,
Change the shape of the higher valve port 1 'to at least halfway through the valve port
Form downwardly divergent shape and opposite side
The top is narrower as it is located above the valve port 1
Is formed on a curved edge projecting upward.

In FIG. 1, a rectifying chamber 6 is formed in the center of the upper part of the snow elimination nozzle body 5, and a water sprinkling hole 7 communicating with the rectification chamber 6 is formed at the top of the snow elimination nozzle body 5 to remove snow. A water supply hole 8 is provided at a lower portion of the nozzle body 5, and the water supply hole 8 and the rectifying chamber 6 communicate with each other through a water supply hole 9. A valve rod fitting hole 10 is provided on a top wall of the snow removal nozzle body 5. 9, a receiving hole 11 is provided at an upper portion, a female screw 12 is provided at an inner peripheral surface of the water flow 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 communicating the water hole 9 with the rectifying chamber 6 is formed on the peripheral surface of the male screw 13 at a different height from the top, and the valve rod 2 is inserted into the valve rod insertion hole 10. Then, the male screw 13 is screwed into the female screw 12, and the valve port 1.
The case where 1 ′ is formed is illustrated.

The water is passed through the water pipe 18, the water hole 9, the water passage 14, the valve port 1.1 ', the rectification chamber 6, and the water is sprinkled through the water hole 7.

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

In FIG. 4, a rectifying chamber 6 is formed above the snow-eliminating nozzle body 5, and a valve screw hole 19 communicating with the rectifying chamber 6 is provided at the top of the snow-eliminating nozzle body 5. 5 is provided with a water supply hole 8 at a lower portion, and a valve insertion hole for communicating the water supply hole 8 with the rectification chamber 6.
A male screw 13 'is formed on the outer peripheral surface of the upper portion of the valve rod 2 to be screwed into the valve screw hole 19. 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 hole 22 communicating with the rectifying chamber 6 and the water chamber 21 is formed at the center of the valve rod 2, and a vertical hole is formed at the center of the lower part of the valve rod 2. A water passage 23 is formed, and a horizontal hole-shaped horizontal water passage 24 is formed in the water passage 23 at a different height to form a water passage 14.
The figure shows a case where 1 'is provided on the peripheral surface of the valve rod 2 with a different height.

Water is supplied through the water supply pipe 18, the valve insertion hole 20, the vertical water passage 23, the horizontal water passage 24, the valve port 1.1 ', the rectification chamber 6, the water passage hole 22, the water chamber.
The water is sprayed from the watering hole 7 through 21.

In the figure, reference numeral 25 denotes a rotating groove, and reference numeral 26 denotes 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 top is formed in an arc shape curved upward, or as shown in FIG. It may be in the shape of a daruma with a slightly protruding upper part.

The internal structure of the snow-elimination nozzle body 5 can be variously changed in design.

[0026]

According to the present invention, as described above ,
A valve rod is provided so that it can be moved up and down in the vertical direction at the center.
Insert the end into the water hole provided in the middle of the snow removal nozzle body.
Communicate the water holes with the water channels provided on the left and right of the valve rod,
Open the upper part of the left and right water passages to the left and right of the peripheral surface of the valve rod.
To form a valve port, and provide a difference in height between the left and right valve ports,
The shape of the other port downward, at least up to the middle of the port.
The valve port 1 on the opposite side is formed in a divergent shape.
The top part, which is gradually narrower as it is located above
Because it was configured to be formed on the curved edge protruding toward
When the amount of water discharge is reduced for water saving, the valve opening gradually decreases in area and the upper corner is curved, so the slit does not become extremely narrow, and a constant amount of water discharge state is maintained. A water spray amount adjusting device for a water spray nozzle in a snow removal device for a road surface, in which water discharge is not interrupted or stopped as in the related art.

[Brief description of the drawings]

FIG. 1 is a longitudinal 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 longitudinal sectional view of another example of the present invention.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Valve port 1 'Valve port 2 Valve rod 5 Snow-absorbing nozzle body 9 Water hole 14 Water passage

Continued on the front page (72) Inventor Ryojiro Asano 6-8 Minamishinbo, Sanjo City, Niigata Prefecture (72) Inventor Kinju Asano 2nd Yoshida, Sanjo City, Niigata Prefecture (72) Inventor Kinji Asano Sanjo, Niigata Prefecture 2901 Tsukioka

Claims (1)

(57) [Claims] 1. A valve rod 2 is provided to be able to move up and down in the vertical direction of a central part of a snow removal nozzle body 5, and a lower end of the valve rod 2 is inserted into a water passage hole 9 provided in the middle of the snow removal nozzle body 5. , allowed communicates the water path 14 provided on the left and right of the water passage hole 9 and the valve stem 2, the left and right
And allowed opening the upper part of the water passage 14 to the right and left peripheral surface of the valve stem 2
A valve port is formed, and a height difference is provided between the left and right valve ports 1.1 '.
Only the shape of the higher valve port 1 ', at least until the valve port midway reaction while forming diverging shape downward
Contralateral valve port 1 progressively width watering amount adjusting device of the watering nozzle in the road snow melting device, wherein a formed in the curved edge which protrudes toward the top portion becomes narrower upwardly located above the.