JPS61212353A - Ejection nozzle for washing - Google Patents

Abstract

PURPOSE:To eject water intermittently from an ejecting hole and to elevate washing effect by providing a partition plate provided with a window hole, and an opening and closing plate at the front end of a water passage and a rotary shaft provided with a vane wheel at the hind end of the water passage. CONSTITUTION:In an ejection nozzle for cleaning dirts with high pressure water, etc., an opening of a nozzle hole 7 is closed with a partition plate 10 having an elliptic window hole 10a at the upperly side of the water passage 2, and a bearing 11 is fitted to a central shaft hole; thus, a rotary shaft 12 is installed. Further, a vane wheel 13 is fixed to the external periphery of the hind part of the rotary shaft 12, and an elliptic opening/closing plate 14 having elliptic front shape is fitted to the front external periphery. The window hole 10a of the partition plate 10 is opened or closed by the rotation of the rotary shaft 12. When fluid from a pump is introduced into a casing in this constitution, the opening/closing plate is turned by the rotation of the vane wheel. When the window hole in the partition plate is closed, the fluid is discharged intermittently through the ejection hole.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cleaning spray nozzle used to remove dirt from structures and machinery using high-pressure water.

(Prior art) Conventionally, it has been used to clean dirt such as mud, dirt, and debris adhering to the exterior surfaces of vehicles, agricultural machinery, hulls, aircraft, etc.

High-pressure water of 20 to 200 kg/d is sprayed from a spray nozzle for cleaning.

In this case, the cleaning effect is proportional to the water pressure and the amount of water; the higher the water pressure and the more water.

Because of the large size, a high-pressure pump is generally used as the power source.

(Problem to be solved by the invention) In order to increase the pressure of the cleaning water in order to increase the cleaning power,
Since a high-pressure pump is required, there are problems in that the entire device is expensive and has a short lifespan.

Moreover, if the amount of water is increased, the amount of water consumed □ will increase, and the cleaning cost will increase, so there is a problem that it is not economical.

(Means for Solving the Problems) An object of the present invention is to improve the cleaning effect on objects to be cleaned by intermittently jetting water from a jetting nozzle through a jetting hole.

The cleaning injection nozzle according to the present invention includes a casing having an injection hole at the tip, a pump connection opening at the rear end, and a flow path that communicates the two, and a casing that is provided in the flow path and has an opening for connecting the pump at the rear end. a partition plate having a window hole smaller than the cross-sectional area of the channel; a rotating shaft provided in the channel so as to be rotatable around an axis along the channel; and a rotating shaft fixed to the rear end of the rotating shaft; an impeller that can be rotated by the flow of fluid; and an opening/closing plate that is linked to the front end of the rotating shaft and that can intermittently open and close the window hole to interrupt the flow of fluid as the rotating shaft rotates. It is equipped with the following.

(Operations and Effects) When fluid, such as high-pressure water, is sent from the pump and flows into the casing, the impeller rotates and the opening/closing plate rotates.

When the window hole of the partition plate is blocked by this opening/closing plate, the flow of water is blocked, and when the window hole is opened.

As water passes through, water is intermittently discharged from the injection hole.

The surface of the object to be cleaned is cleaned by discontinuously impinging water, resulting in a high-impact cleaning effect, reducing water consumption, or achieving more effective cleaning with the same pressure. able to perform work.

(Example) Hereinafter, the present invention will be described in detail based on an illustrated example.

(1) is a cylindrical casing having a horizontal flow path (2) in Fig. 1, and tapered screws (la) and (lb) are cut into the inner periphery of the opening at the front and rear ends, respectively. There is.

An annular projecting wall (1c) is formed near the left end of the flow path (2), and an annular groove (1d) is cut therefrom at a predetermined distance.

(3) is a guide impeller, which has a plurality of guide vanes (3
b) is provided in a protruding manner, and the outer periphery of the free end portion of the guide vane plate (3b) is connected to each other by a ring body (3c). This ring (
3c) The rear end surface is connected to the annular projecting wall (1c) at the back of the flow path (2).
), and the front end face is also prevented from being removed by a ring (5) fitted in the annular groove (ld).

(6) is a nozzle joint, which has a truncated conical cross section and is located at the center of the outer peripheral surface of the main body (6a), which has a flow path at the center of the axis.

A tapered screw (6C) is cut on the outer periphery of the rear part where the collar part (6b) is connected and the diameter becomes small after the collar part (6b) is installed.
is a tapered screw (1a) at the front end of the casing (1).
is screwed into.

A tapered screw (6d) is attached to the front end opening of the nozzle hole (7).
is cut, and this tapered screw (6d) has an injection hole (8
) is screwed into the outer peripheral surface of the nozzle tip (9).

The rear end of the nozzle hole (7) is enlarged in diameter via a sloped portion (7a), and the opening is formed of a partition plate ( The shaft hole (10b) at the center of the partition plate (10) is blocked by the bearing (10).
1) is fitted and inserted, and the outer periphery of the front and rear ends is rotatably supported by this bearing (11) and the bearing (4), and the rotating shaft (12)
is installed.

As shown in Fig. 3, on the rear outer periphery of the rotating shaft (12),
A plurality of inclined blade plates (
An impeller (13) having an impeller (13b) protruding in the radial direction is fixed.

On the front outer periphery of the rotating shaft (12), an opening/closing plate (14) having an elliptical front face is provided with a shaft hole (14) that is offset from the center to one side.
a), and the window hole (10a) of the partition plate (10) can be opened and closed by rotation of the rotating shaft (12).

The tapered screw (1b) of the casing (1) has a water pipe (15) whose base end is connected to a high-pressure pump (as shown).
A tapered screw (15a) at the tip of is screwed in,
For example, a fluid such as water is supplied.

(Modified example) In the above embodiment, a fixed guide vane was provided in the vicinity of the impeller, but instead of this, a guide wall may be provided protruding from the flow path circumferential wall, or a partition plate on one circumferential wall may be provided. A plurality of inclined introduction holes may also be provided.

Although the nozzle joint having the nozzle tip is screwed into the opening of the casing, the injection hole or the window hole may be provided directly in the casing instead of this.

The opening/closing plate may be linked to the rotating shaft via a reduction gear or the like for adjusting the number of rotations.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention. Figure 2 is a front view of the guide impeller in Figure 1, Figure 3 is a front view of the impeller in Figure 1, and Figure 4 is a longitudinal sectional view taken along line IV-IV in Figure 1. be. (1) Casing (2) Flow path (3) Guide impeller (4) (11) Bearing (5) Ring
(6) Nozzle joint (7) Nozzle hole
(8) Injection hole (9) Nozzle tip (1
0) Partition plate (10a) Window hole (12) Rotating shaft (13) Impeller (14) Opening/closing plate (
15) Water pipe

Claims (1)

[Claims] It has an injection hole at the tip and an opening for pump connection at the rear end.
and a casing having a flow path that communicates the two, a partition plate provided in the flow path and having a window hole smaller than the cross-sectional area of the flow path, and a partition plate provided in the flow path that extends along the flow path. a rotating shaft rotatably provided around an axis; an impeller fixed to the rear end of the rotating shaft and capable of rotating with the flow of fluid; and an impeller linked to the rotating shaft at the front end of the rotating shaft and configured to rotate the rotating shaft. A cleaning spray nozzle comprising an opening/closing plate that can intermittently open and close the window hole to interrupt the flow of fluid.