JPH01210058A - Apparatus for controlling water sprinkling amount of water sprinkling nozzle in road snow removal device - Google Patents

Abstract

PURPOSE:To prevent the interruption of water sprinkling upon reducing the amount of the water, by providing a valve mechanism of water sprinkling nozzle for closing a valve opening with a valve wherein a valve opening portion is widened toward the end in the valve opening direction and its corners on the closing side are formed into a curved surface. CONSTITUTION:In the valve mechanism of water sprinkling nozzle for freely opening and closing a valve opening 1' with a valve 2, a valve opening portion 3 is widened toward the end in the valve opening direction and its corners on the closing side are formed into a curved surface 4. In this structure, as the valve opening portion 3 is gradually narrowed with the valve, the amount of water passing through the valve opening portion 3 is gradually reduced. During this time, if the corners 4 are not curved, the triangularly shaped corners on the lower extremety of the valve opening portion 3 widening toward the end could block the passage of water to interrupt the water sprinkling upon an excessive valve closing. However, the formation of the curved surface 4 prevents the water sprinkling from being interrupted or stopped upon reducing the amount of the sprinkling water, if the closing of the valve is held immediately before the excessive closing and a slit is not narrowed excessively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a water sprinkling amount adjusting device for a water sprinkling nozzle in a road snow removing device.

[Problems to be solved by conventional technology and invention]

The water nozzle had to be equipped with a water volume adjustment device so that it sprayed a fixed amount of water at a constant height both in areas far from the pump and in areas close to the pump.

Various structures have been adopted for this water flow regulating device, and the applicant has already filed applications for valves with various structures.

For example, instead of a two-part style consisting of a valve barrel and a valve body,
We have developed a part style patent application No. 184609/1989 that includes only the valve stem, but as shown in Figure 5, the valve body is raised and lowered so that the opening corner edge of the water hole and the sloped opening of the valve stem face each other. The system uses a structure that adjusts the amount of water sprinkled by widening and narrowing the gap.

When testing this valve body, we found that when we reduced the amount of water sprayed to save water, in other words, shortened the distance of water spraying, water was sprayed at first, but after a while, the water flow became poor and the water flow stopped as we were unable to maintain the reduced water flow. It has been confirmed that there are drawbacks that may cause the system to stop or stop.

As a result of repeated tests and various considerations for the cause, we found that this phenomenon sometimes occurs when the 41-hole slit in Fig. 5 is about 0.5xyr, and that this phenomenon always occurs when the slit is narrower, about 0.2xx. I understand, the reason for this is that when the slit becomes extremely narrow in order to reduce the amount of water discharged, a water flow phenomenon occurs that resists the sudden attempt to force water into a narrow space from a wide area, which prevents the water from being introduced smoothly. I came to the conclusion that this may be the case.

Of course, there are other fine particles such as iron in the water, and these fine particles can clog the slits, and at the same time, dirt, scum, scale, etc. can also promote this blockage, which can cause water discharge failure in a short period of time. I deduced that it would be.

Then, I realized that the reason why the slit becomes extremely narrow is because there are many valve ports themselves, or because they exist all around the circumference, so the slit must be made extremely narrow.

Therefore, the applicant proposed that when regulating the amount of water discharged by gradually closing the valve openings with valves, the area of the valve openings to ensure the minimum amount of water discharged would be consolidated into one place, the area of the valve openings would increase accordingly, and the above-mentioned drawbacks would be avoided. We thought that the problem could be solved, and as a result of testing, it was confirmed that the idea was correct, and we completed the present invention.

[Means to solve the problem]

A detailed description will be given below with reference to the accompanying drawings showing an example of implementation.

In the valve mechanism of a water spray nozzle for a road snow removal device of the type in which the valve port 1 is freely closed by the valve 2, the valve port portion 3 is closed.
This is a conflict characterized in that the shape of the shape is widened towards the end in the direction of expansion, and the corner on the side to be constricted is formed in the curved surface 4.

Further, the eaves of the valve port 3 may be provided in a substantially triangular shape with rounded corners or a potbellied shape.

In the valve mechanism of a water sprinkler nozzle for a road snow removal device in which multiple valve ports 1 are freely closed by valves 2, only one valve port 1° performs the valve action when the amount of water flow is reduced. to 1
It is characterized in that the position of one valve port 1'' with respect to the valve 2 is different in height from the position of other valve ports 1 with respect to the valve 2.

[Effect]

In summer, as the valve port 3 is gradually closed with the valve 2 in FIG. 1, the amount of water passing through the valve port 3 gradually decreases.

At this time, since the shape of the valve port 3 to be closed is widened toward the end in the expanding direction, the amount of water flowing through the valve changes greatly even if the stroke is small.

When the shape of the valve port 3 is widened toward the end, the constricted end shape becomes a triangular corner shape, which has the disadvantage of being extremely constricted as described above.

In this regard, if you make the corners curved or have a potbellied shape as shown in Figure 2.3, if you take one step before narrowing down the slit to the extreme, for example, in the case of a potbellied shape, if you leave the head part, the slit will be too extreme. does not become narrower.

It does not become extremely narrow like 0.2tttz as shown in FIG. 5 mentioned above.

2. FIG. 4j As the valve port 3 is gradually closed with the valve 2, the amount of water passing through the valve port 3 gradually decreases.

At this time, since there is a difference in height between the left and right valve ports 3, only one valve port 3 performs the valve action in the end, and multiple valve ports 3 that pass the same amount of water are at the same height. The degree of opening of the single valve port 113, which is narrowed down rather than being scattered, is such that the opening becomes large for a predetermined amount of water passing through.

Therefore, similarly to the above, the space does not become extremely narrow as shown in FIG.

〔Example〕

In the one shown in FIG. 1, a rectifying chamber 6 is formed in the center of the upper part of the nozzle body 5, a water sprinkling hole 7 is provided at the top of the nozzle body 5 to pass through the rectifying chamber 6, and a water supply hole 8 is provided at the lower part of the nozzle body 5. established,
The water supply hole 8 and the rectification chamber 6 are communicated through the water passage hole 9. A valve insertion hole 10 is provided in the center of the nozzle body 5, and a receiving hole 1 is provided at the upper part of the water passage hole 9. A female screw thread is provided on the inner circumferential surface,
A male thread is provided at the bottom of the valve 2, and a water passage groove 14 is formed on the circumferential surface of this male thread by changing the height of the top to communicate the water passage hole 9 and the rectification chamber 6, and the valve is inserted. The figure shows a case where the valve 2 is inserted into the hole 10 and the male screw thread is screwed onto the female screw n to form a valve opening 1.1° between the upper part of the water passage groove 14 and the upper opening edge of the receiving hole 11. It shows.

Water passes through the water supply backstop, water passage hole 9, water passage groove 14, valve port 1'', and rectification chamber 6, and is sprayed from the water sprinkling hole 7.

In the figure, numeral Takumi is a locking groove, kawa is a cover material, and 17 is an O-ring.

The one in FIG. 4 has a rectifying chamber 6 formed in the upper part of the nozzle body 5, and a valve threaded hole 1 communicating with the rectifying chamber 6 in the neck of the nozzle body 5.
9, a water supply hole 8 is provided in the lower part of the nozzle body 5, a valve insertion hole is provided to communicate the water supply hole 8 and the rectification chamber 6, and the valve is screwed into the valve screw hole 19 on the upper outer peripheral surface of the valve 2. A female thread is formed, a water chamber 21 is provided at the center of the valve 2, and a water chamber 21 is provided at the neck of the valve 2.
1, a water hole n is bored in the center of the valve 2 to communicate the rectification chamber 6 and the water chamber 21, and a vertical water hole 4 is bored in the center of the lower part of the valve 2. In this vertical water hole n, horizontal water holes are drilled at different heights, and valve ports 1 and 1 of each horizontal water hole are opened.
' is provided on the circumferential surface of the valve 2 at different heights.

Water is supplied through water pipes with one valve insertion hole per week and 23 vertical water holes. Water is sprayed from the water sprinkling hole 7 through the horizontal water passage hole U, the valve opening 1°, the rectification chamber 6, the water passage hole 22, and the water chamber 2.

In the figure, the symbol δ is a rotation groove, and the symbol δ is a hole closing material.

The shape of the valve port 1 is such that the upper corner to be constricted is formed into an arc shape.
Although the opening shape of the valve port 1 is a substantially triangular shape with smooth corners as shown in FIG. 2 and widening towards the end, it may also be shaped like a pot-bellied shape with a slightly protruding upper part as shown in FIG. 3.

〔Effect of the invention〕

Since the present invention is constructed as described above, it becomes a water sprinkling amount adjusting device for a water sprinkling nozzle in a road snow removal device that does not cause water sprinkling to be interrupted or stopped when the water sprinkling amount is reduced in order to save water.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a front view of the valve port, FIG. 3 is a front view of another example of the valve port, and FIG. 4 is a front view of the valve port of another example. FIG. 5, which is a vertical sectional view of another example, is a sectional view of a main part of a conventional road surface lightning extinguishing water nozzle. 1.1°...Valve port, 2...Valve, 3...Valve port, 4
...Curved surface. February 19, 1988 Applicant Yoshiki Asano

Claims (1)

[Scope of Claims] 1. In a valve mechanism of a water spray nozzle for a road snow removal device of the type in which a valve port is freely closed by a valve to widen and narrow, the shape of the valve port portion to be blocked is made into a shape that widens toward the widening direction. 1. A water sprinkling amount adjusting device for a water sprinkling nozzle in a road surface snow removal device, characterized in that a corner portion on the side that is narrowed by a curved surface is formed. 2. The water sprinkling amount adjusting device of a water sprinkling nozzle in a road snow removal device according to claim 1, wherein the valve opening portion is provided in a substantially triangular shape with rounded corners or a potbellied shape. 3. In the valve mechanism of a water sprinkler nozzle for a road snow removal device that uses valves to block multiple valve ports in a wide and narrow manner, one valve is closed so that only one valve port performs the valve action at the end when restricting the amount of water flow. A water sprinkling amount adjustment device for a water sprinkling nozzle in a road snow removal device, characterized in that the position of one valve port relative to the valve is different in height from the position of another valve port relative to the valve.