JPS60261567A - Spray nozzle - Google Patents

Abstract

PURPOSE:To prevent the deposition of a spray material on the inner wall of a nozzle and to improve the mixing of the spray material by providing two or more mixing parts each provided with a multiple vibration plate for preventing the deposition of the spray material on the inner wall of the spray nozzle, and connecting said mixing parts obliquely to one another. CONSTITUTION:Two or more mixing parts 2 each equipped with a multiple vibration plate 1 for preventing the deposition of a spray material on the inner wall of a spray nozzle are provided, and the mixing parts 2 are connected to one another. The chances of mixing of the spray material are increased in this way, and the mixing effect of the spray material in the nozzle is further improved. Accordingly, the clogging in the nozzle and nonuniform injection in the spray operation are prevented, and a uniform coating is obtained by spraying.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spray nozzle used in refractory spraying work, civil engineering/construction spraying work, etc.

The spraying work is due to improvements in spraying materials and spraying machines.

It became widely adopted due to its simplicity.

However, during the spraying process, the material to be sprayed tends to adhere to the inner wall of the nozzle, which eventually causes clogging, requiring the spraying process to be frequently interrupted. This has caused the problem of spraying without sufficient mixing. The present invention is aimed at solving these problems and is based on a device previously filed by the present applicant (Utility Application No. 59-26730).

The mixing part (2) has at least two mixing parts (2) equipped with multiple diaphragms (11k) for preventing adhesion to the inner wall of the spray nozzle.
The spray nozzles are bent and connected to each other to provide a nozzle.

That is, the present invention completely prevents the adhesion of the spray material to the inner wall of the spray nozzle (1), the mixing section (2), which is fully equipped with multiple diaphragms (1) for preventing the spray material from adhering to the inner wall of the spray nozzle, and mixes the spray material inside the nozzle. This further improves the effect.

Therefore, if the nozzle is clogged during the spraying operation, uneven spraying can be prevented, which greatly contributes to improving the efficiency of the spraying operation and achieving uniform spray coating.

The spray nozzle of the present invention can provide a sufficient mixing path for solid and liquid even when spraying a narrow cylindrical inner surface or a groove-shaped inner surface, and can prevent nozzle clogging, and can be used at each mixing portion or tip portion. In combination with the oscillating mechanism, spraying in all directions becomes easy.

The multiple diaphragm for preventing adhesion to the inner wall of the spray nozzle used in the present invention (hereinafter simply referred to as the multiple diaphragm) is composed of two or more layers of diaphragms.

Its shapes include strips, cylinders, and sheets.

There are various types of chain-like shapes, but strip-like ones are particularly effective, and their materials include rubber and synthetic resin.

Metals, nonferrous metals, etc. are suitable.

Also, if the width of the single piece of the outermost layer of the multiple diaphragm is equal to or greater than the width of the single piece of the innermost layer, the outermost layer diaphragm has a lower amplitude and contact area with the nozzle inner wall than the innermost layer diaphragm. is the same or higher, and the effect of preventing adhesion of the sprayed material, i, to the nozzle inner wall and the mixing effect are improved.

In order to allow the spray material to pass smoothly between the mixing sections, the base of the strip-shaped multiple diaphragm is made into a cylindrical shape.

It is preferable to provide an introduction hole in the core to allow the spray material to pass through.

Next, the multiple diaphragm vibrates from inside the diaphragm due to the pumping energy of the sprayed material.

It will be even more effective to use secondary means such as introducing compressed air, water, etc. to the outside of the diaphragm and causing it to vibrate from the outside as well.

The multiple diaphragms can be easily attached to the nozzle by fitting flanges or rings.

In this case, the diaphragms may be stacked and fixed on the same flange or ring, or flanges or rings separated and fixed for each layer may be stacked.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows a cross-sectional explanation part (2) in one embodiment of the present invention.
are screwed together at their respective joints and are rotatable.

FIG. 2 is an explanatory axial cross-sectional view of one embodiment of the multiple diaphragm used in the present invention, in which one end of the diaphragm (4) as an inner layer is fixed to a metal rubber ring (6) with a wire. On top of that, as an outer layer, the width of a single piece of strip is 2 times the width of a single piece of the inner layer.
The double diaphragm (5) is fully installed.

FIG. 3 is a cross-sectional view of FIG. 2 through which a person enters.

The spraying of the present invention shown in Fig. 1 was performed at 300 mI using the nozzle.
The spraying was carried out on the lining surface of a 1m wide 17 ton steel continuous casting tundish, and a good sprayed surface with little rebound loss was obtained.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view of one embodiment of the present invention. FIG. 2 is an explanatory axial cross-sectional view of one embodiment of the multiple diaphragm used in the present invention. FIG. 3 is a sectional view taken along line AA in FIG. 2. 1: Multiple diaphragm 2: Mixing section 3: Air and water inlet 4: Inner layer diaphragm 5: Outer layer diaphragm 6: Ring 7: Air and water introduction pipe

Claims (1)

[Claims] 1) Spraying is performed using multiple diaphragms (1) for preventing adhesion to the inner wall of the nozzle.
A spray nozzle characterized in that it has at least two mixing parts (2) and the mixing parts (2) are bent and connected to each other. 2) The spray nozzle according to claim 1, wherein the bent portion is at a right angle.