JPS63175657A - Nozzle - Google Patents

Abstract

PURPOSE:To discharge of a liquid uniformly in the form of a curtain under a simple structure and across a broad flow area by providing a dual structured container with addition of an inner container and allowing the leg of a Y-shape inner container to protrude through a blowout port formed in the body of the container. CONSTITUTION:In a nozzle used for a diverter, a liquid is conducted to the bottom of an inner container 30 of iron sheet having an almost Y-shape cross section through a flow-in pipe 20. Then the liquid hits a flow dividing gate 60, passing through holes formed in straightening plates 41-43 to fill the inner container 30. After this, it soon overflows from an upper wall on both arms 32, 33 of the inner container 30. In this case, in a low flow level area in which the volume of an inflowing liquid is small, the overflowing liquid flows to a leg plate 31 along the outer walls of the arms and becomes confluent at the tip of the leg plate 31 to flow in a well-trimmed curtain form. In the meantime, in a high flow level area, a blowout port 12 at the tip of a nozzle is flooded, and consequently, the liquid is discharged in a well-trimmed curtain form as is the case with an ordinary fixed nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a nozzle that discharges liquid uniformly in late autumn.

[Conventional technology]

An example of this type of nozzle is shown in FIG. 5(a). Figure 5 α
], 10 is a rectangular parallelepiped container, and its lower part 1
1 is narrowed, and an air outlet 12 with a radius t is formed at the lower end thereof in the length direction. In the nozzle having such a configuration, when liquid is injected into the container 10, the liquid is discharged from the outlet L2 in late autumn. In such a nozzle, for example, as shown in FIG. 7, a triangular movable element 13 is arranged below the air outlet 12 so as to face the air outlet, and this movable element is shown in (A) and (Extended). By moving the mover from side to side, the late autumn liquid discharged from the outlet 12 is diverted to the right or left with the top of the movable element as a boundary. As described above, the nozzle shown in FIG. 5(a) is used in a diverter, etc., and this diverter is used, for example, in a flow rate needle calibration device based on the mass method.

Now, when the nozzle shown in Fig. 5 (a) is used as a diverter, it is preferable that the discharged liquid becomes uniform in late autumn, but in the structure where @t of the outlet 12 is fixed, in the low flow region As shown in FIG. 5 (mouth), the liquid may flow along the inner wall of the twill portion 11 on both sides, or may flow only on one side, or may not flow uniformly. Devices with variable width are also known. In this case, although the stable flow rate range becomes wider, it is necessary to adjust @t of the blower outlet 12 according to the flow rate, which makes the configuration complicated and the operation required.

[Problem that the invention seeks to solve]

The present invention has been made to solve these problems, and is a simple method that allows stable characteristics to be obtained over a wide flow rate range without adjusting the width of the outlet in a nozzle that discharges liquid in late autumn. The purpose of this invention is to provide a nozzle with a unique configuration.

[Means for solving problems]

In order to achieve the above object, the present invention provides an inner container made of a thin plate and having a 7-shaped cross section, and the legs of the inner container protrude from the outlet formed at the bottom of the container. It is configured so that it can be placed in Examples will be described in detail below.

〔Example〕

FIG. 1 is an exploded perspective view of an embodiment of a nozzle according to the present invention. In FIG. 1, reference numeral 10 denotes a rectangular parallelepiped nozzle container, which has a twilling portion 11 on the lower side and an elongated blow-off port 12 at the bottom thereof, as in FIGS. 5 and 6. 20 is a liquid introduction pipe;
It is provided on one side wall of the container 10. 30 is an inner container added according to the present invention. The inner container 30 has a 7-shaped cross section, and its arms 32 are arranged so that its legs 31 protrude below the air outlet 12 formed in the container 10.
．． 33 is arranged inside the container 10.

Reference numerals 41 to 43 each indicate a rectifying plate having a large number of holes, and are arranged inside the inner container 30 at predetermined intervals. 5
Reference numeral 0 denotes a flow dividing gate, which is arranged at the lower part of the rectifying plate 41 as shown in Fig. m2. In such a configuration, the operation thereof will be explained as follows using FIGS. 2 and 3.

Liquid is introduced into the lower part of the content D 30 via the inlet tube 20. This liquid hits the flow dividing gate 50 as shown in FIG. 2, passes through the holes formed in the rectifying plates 41 to 43, and stays in the inner container 30 to its fullest, and eventually reaches both arms 32 and 33 of the inner container 30. overflows from the earthen wall. In this case, if the amount of inflowing liquid is small, the overflowing liquid will be transferred to both arms 32 and 33 of the inner container 30, as shown in FIG. 3(a).
Flows flowing down along the outer wall of the foot plate 31 on both sides of the leg plate 31 merge at the tip of the leg plate 31 to form a well-organized late-autumn stream. On the other hand, in a large flow area, the outlet 12 at the tip of the nozzle becomes full of water, as shown in FIG. 3(b), similar to a normal fixed nozzle, and the water is discharged as a regular evening stream.

FIG. 4 is a block diagram of main parts of another embodiment of the present invention. 5. In FIG. 4, parts that are the same as those in FIG. 1 are given the same reference numerals as in FIG. 1, and their redescription will be omitted. In Figure 4, 61.62 is a skirt.

This skirt is provided in waves over the entire width of the container 10 in the longitudinal direction. The skirts 61 and 62 have their tips separated by @t1 with the points 63 and 64 provided on the twill part 11 as axes, and can be opened and closed by a spring when pushed by the flow rate flowing out from the outlet 12.

There is no problem with the device shown in Fig. 1 at large and small flow rates, but in medium flow ranges there may be a slight drop from the outlet 12 along the inner wall of the container 10, but as shown in Fig. 4, the movable skirt By providing 61 and 62, their sagging can also be prevented.

Note that such a nozzle is not only used in the diverter as described above, but also can be used, for example, as a nozzle for mixing liquids to uniformly mix liquids. Further, by using a nozzle for continuous application of liquid to a band-shaped surface, uniform application is possible, and by using it in combination with a fountain or the like, a high quality water inch rear can be obtained.

[Effects of the present invention]

As explained above, in the present invention, an inner container is provided and the container can be increased to 2M! The structure is such that the legs of the 7-shaped inner container protrude from the air outlet formed in the container.
It is possible to realize a nozzle with an extremely simple configuration that can uniformly discharge liquid in late autumn over a wide flow range from medium flow to large flow without adjusting the width of the outlet.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of an embodiment of a nozzle according to the present invention;
2 and 3 α] and (b) are diagrams for explaining the operation of the nozzle in FIG. 1, respectively, and FIG. 4 is a configuration diagram of the main parts of another embodiment of the nozzle according to the present invention, FIGS. 5(a), 6(b) and 6 are respectively explanatory diagrams of the configuration of a conventional nozzle of this type, and FIG. 7 is a diagram for explaining one mode of use of this type of nozzle. 10... Container, 11... Ayabe, 12... Outlet,
20... Inflow port, 30... Inner container, 31... Legs, 32, 33... Arms, 40... Current plate, 50...
・Diversion gate.

Claims (1)

[Claims] In a nozzle, which is a rectangular parallelepiped-shaped container with a constricted lower part and has an outlet with a predetermined width in the length direction at the lower end, an inner container made of a thin plate and having a roughly Y-shaped cross section is provided. A nozzle arranged in the container such that a leg protrudes from the outlet.