JPH0431745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a snow removal nozzle mainly used for removing snow from passageways.

[Conventional technology]

Snow melting nozzles are not practical unless they have a water flow control valve that can adjust the amount of water sprayed.

Therefore, various water flow control valves were developed.

Some of them are listed below.

a. A type that has a valve seat on the top of the water hole that is larger in diameter than the water hole and completely blocks the water hole so that it can be raised and lowered.

b. A type that has a lifting rod that moves up and down inside the valve cylinder, has a horizontal hole in the middle of the valve cylinder, and opens and closes this horizontal hole at the lower end of the lifting rod by raising and lowering the lifting rod.

c. A type in which the inner valve pair is slid against the outer valve body so that it can rotate, and the rotation of one opens and closes the side holes of both valves.

d A type in which the lower end of the valve rod is inserted into the water hole to form a water passage at the lower end of the valve rod.

and so on.

[Problem that the invention seeks to solve]

In the above-mentioned type a), since the valve seat is in a cantilevered state when opened, the threaded portion is likely to become loose, so it is not durable and does not have a good rectifying effect within the cavity.

Type b) requires two parts, a valve cylinder and a lifting rod, and is complicated and expensive to manufacture.It also has a poor rectifying effect and requires a special rectifying device.

In addition, since the screw structure is double-layered, it is more easily damaged and cannot be used for durability.

The c) type also consists of two parts, an outer valve body and an inner valve pair, which is difficult to manufacture and expensive, and also difficult to fit together, making it impossible to expect a rectifying effect.

The d) type is easily clogged with dirt and has poor rectification action, requiring a special rectification device.

The applicant began research on a water flow control valve that would solve these drawbacks, prototyped various valves, tested them, and finally completed the product of the present invention.

[Means for solving problems]

The configuration will be detailed as follows with reference to the accompanying drawings.

In a snow removal nozzle in which a nozzle body 3 having a cavity 2 is connected to the upper part of a water pipe connection tube 1 and a water fountain 4 is bored in the upper wall of the nozzle body 3, the center of the upper wall of the nozzle body 3 is A valve hole 5 is provided in the valve hole 5, and a valve stem 6 is fitted into the valve hole 5 so as to be able to move up and down as well as rotate. The lower part of the valve stem 6 is fitted so that it can move up and down and rotate freely, and a screw rod 9 with a smaller diameter than the valve stem 6 is attached to the lower end of the valve stem 6.
are arranged in parallel, and this screw rod 9 is screwed into a male screw hole 10 connected to the lower part of the circular hole 8, and a water passage 11 is formed between this screw rod 9 and the lower part of the valve stem 6.
The upper part of 1 is exposed to the upper part of the partition wall by the screwing out of the screw 9, and the amount of water sprinkled can be adjusted by varying the degree of exposure.

Further, the water passages 11 may be provided vertically at several locations on the outer periphery.

[Effect]

The valve stem 6 is inserted through the valve hole 5, and a male threaded hole 10 is provided in the upper partition wall 7 with a threaded rod 9 vertically provided below the valve stem 6.
Screw it into the When the upper part of the water passage 11 is hidden inside the circular hole 8, water flow is completely blocked.

When the valve stem 6 is rotated in the opposite direction and the screw rod 9 is screwed out from the male threaded hole 10, water can pass when the upper part of the water passage 11 is exposed from the upper surface of the upper partition wall 7. The amount of water is adjusted,
As a result, the amount of water sprinkled will be adjusted.

At this time, water (often groundwater) rises up the passageway 11 of the valve stem 6, is sent to the cavity 2 of the nozzle body 3, and is sprayed from the fountain hole 4, but the water rises up the passageway 11. and overflows into the cavity 2.
A rectification phenomenon occurs within the cavity 2, and the water pressure becomes uniform throughout the interior of the cavity 2, resulting in an extremely good rectification effect in which water is uniformly sprayed from any of the water fountains 4.

〔Example〕

In the figure, reference numeral 12 is a thick packing that prevents the vibrations of the car from being transmitted to the valve stem 6, 13 is a concave part for the fountain inlet, 14 is a small diameter part, 15 is a water pipe, 16, 1
7 is an O-ring, and 18 is a rotating square hole.

〔Effect of the invention〕

Since the present invention is configured as described above, it becomes a simple and inexpensive snow removal nozzle that exhibits the following superior features over conventional water flow control valves.

Since it is a one-component style water flow control valve consisting of one valve stem, it is easy to manufacture and low in cost, resulting in a snow removal nozzle that is correspondingly inexpensive.

Since it is a water flow control valve that changes the water flow rate depending on the degree to which the upper part of the water passage is exposed in the cavity, it is a water flow control valve that can finely adjust the water flow or completely shut off, making the snow removal nozzle highly practical.

The upper part of the valve stem fits tightly into the valve hole, and the lower part of the valve stem fits tightly into the circular hole, so the threaded part of the screw rod will not loosen, making it a water flow control valve that can be used for a long time. Become.

The water flow collides with the upper part of the water passage and flows into the cavity along the bottom of the cavity, so the water pressure becomes uniform throughout the cavity, resulting in an extremely excellent rectification effect in which water is sprayed uniformly from every fountain hole. It becomes a snow removal nozzle.

In particular, by designing and selecting the structure and shape of the water passage, a vortex phenomenon occurs within the cavity, resulting in a more excellent rectifying effect.

To provide a snow removal nozzle that does not get clogged with dirt and even if it becomes clogged, it can be easily removed by raising and lowering the valve stem.

Since the upper part of the valve stem does not have a threaded structure, it is possible to design the valve stem to be thicker, and as a result, the depth and thickness can be designed to be larger.

The above effects are combined to create a snow removal nozzle that exhibits far superior practicality compared to conventional snow removal nozzles, and this has been proven in actual comparison tests.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a perspective view of a valve stem, and FIG. 3 is a sectional view of another example of a valve stem. DESCRIPTION OF SYMBOLS 1... Water pipe connection cylinder, 2... Cavity part, 3... Nozzle body, 4... Fountain hole, 5... Valve hole, 6... Valve stem, 7... Upper partition, 8... Perfect circular hole, 9... Screw rod, 10... male screw hole,
11...Waterway.

Claims (1)

[Scope of Claims] 1. A snow removal nozzle in which a nozzle body having a cavity is connected to the upper part of a water pipe connection cylinder and a water fountain is bored in the upper wall of the nozzle body. A valve hole is provided in the center, and a valve stem is fitted into this valve hole so that it can be raised and lowered as well as rotated.A perfect circular hole is formed in the upper partition wall of the water pipe connection tube, and the lower part of the valve stem is inserted into this perfect circular hole so that it can be raised and lowered. A screw rod with a smaller diameter than the valve stem is arranged in parallel at the lower end of the valve stem, and this screw rod is screwed into a male screw hole continuous to the lower part of the circular hole. A snow melting nozzle is characterized in that a water passage is formed extending to the lower part of the water passage, the upper part of this water passage is exposed at the upper part of the bulkhead by a screw screw, and the amount of water sprayed is adjusted by varying the degree of exposure. 2. The snow removal nozzle according to claim 1, in which water passages are provided vertically at several locations on the outer periphery.