KR200226493Y1 - Pan waterjet nozzle - Google Patents

Abstract

The present invention relates to a nozzle for making a fan-type high pressure water jet for uniformly removing or shaving foreign substances on the surface of an object or the surface itself to a desired width. The nozzle is made of stainless steel, etc., with a nozzle tip made of ultra hard material such as diamond or sapphire. It is built in the holder and the upper inlet is formed by the horizontal cylindrical inner surface and the side wall, and is formed by forming a lower outlet opening to be opened at a predetermined angle from the hole drilled in the middle portion of the cylindrical surface.

Description

Fan-type high pressure waterjet nozzle {PAN WATERJET NOZZLE}

The present invention relates to a nozzle for producing a high pressure water jet stream for removing or scraping foreign matter or the surface itself evenly to a desired width.

Various nozzles have been devised and used to cut, scrape, remove, or wash objects of various materials by using high pressure water (up to 4,000 bar) at high speed through a nozzle. Among them, a fan-type waterjet nozzle spreading only in one axial direction was used for low pressure and high pressure in order to uniformly remove or cut over a constant width of the surface.

Such prior arts include US Patent 5,052,624 and US Patent 6,019,298.

However, these two methods may be convenient for mass production with the same specifications, but it is inconvenient to obtain a highly functional and durable nozzle that can be adjusted and manufactured according to the required specifications such as the opening area and the spray angle.

In order to obtain a high-performance nozzle that is easy to adjust the specification of the high durability, using a material of the same material as the existing water jet cutting diamond or sapphire nozzle to form a structure to obtain the desired water stream.

1 is a longitudinal cross-sectional view of a conventional example 1 nozzle

FIG. 2 is a top view of FIG. 1

Figure 3 is a longitudinal cross-sectional view of a conventional example 2 nozzle

4 is a 90 ° rotation longitudinal cross-sectional view of FIG.

Figure 5 is an example of a cross-sectional view of the state the product is mounted

6 is a longitudinal sectional view of the present invention

7 is a top view of the present invention

FIG. 8 is a sectional view taken along line 9-9 of FIG.

9 is a longitudinal cross-sectional view of the nozzle tip portion;

10 is a top view of the nozzle tip portion 11 is a 90 ° rotation longitudinal cross-sectional view of FIG.

In order to achieve this object, it has a structure that can withstand the necessary pressure and can be sealed easily. In Fig. 5, the nozzle cap 13 pushes the nozzle 11 onto the shaft 12 so that the upper surface 14 of the nozzle 11 and the lower surface 15 of the shaft 12 are sealed by metal contact sealing or sealing material insertion.

6, the nozzle holder is made of metal such as stainless steel, and the nozzle tip 21 is fixed to the groove of the nozzle holder 22 by powder metal sintering 23 or a sealing material. In the direction perpendicular to the axis of the cylinder on which the water flows, the hole in the lower part of the nozzle holder is dug slightly larger than the fan-type injection angle.

The shape of the hole in the lower part of the nozzle holder in the axial direction of the cylinder, which is the non-spread side shown in Fig. 8, is determined in consideration of the strength or the ease of the workpiece.

The inner wall surface of the nozzle tip upper inlet 31 of FIG. 9, FIG. 10, and FIG. 11 consists of the horizontal cylindrical surface 32 and the side walls 33 and 34. As shown in FIG.

A hole 40 is drilled in the center of the cylindrical surface, and the lower discharge port 35 connected thereto consists of walls 36 and 37 and walls 38 and 39 that form an angle greater than the opening angle 'ga' of the sprayed water stream, so that the hole 40 forms an orifice portion. Hole 40 can define a variety of shapes, such as circles, ellipses, rectangles with four-sided or short-sided curves, and it is advantageous to lengthen the direction perpendicular to the axis of the cylinder.

In describing the jet of water from the nozzle, the flow flowing from the upstream side through the flow path passes through the orifice 40 at a relatively low speed and high pressure to the upper 31 part of the nozzle, and changes into a high velocity water stream after passing through the orifice 40, and from thereafter, in the orthogonal direction of the orifice. Go straight.

That is, the water stream passing through the orifice in FIG. 9 is sprayed from the center 50 of the cylindrical surface in the radiation direction, and in the direction perpendicular to the cylindrical surface 32 in FIG. 11. As a result, a thin and even water stream is obtained.

By selecting the radius 'b' of the upper cylindrical surface 32, the length 'd' and the width 'd' of the orifice hole 40, the desired opening area and spraying angle can be easily adjusted. The nozzle can be easily changed by adjusting the orifice shape, and thus, a nozzle excellent in high functionality and ease can be obtained.

Claims (1)

In the high pressure fan-type waterjet nozzle composed of a nozzle tip made of diamond or sapphire and a metal nozzle holder, an upstream portion thereof is formed by a portion of a transverse cylindrical shape and a side wall, and an orifice is formed in the middle of the cylindrical surface, and the downstream portion is A water jet nozzle having a discharge port formed to be narrower in the axial direction of the cylinder and slightly larger than the fan injection angle in a direction perpendicular thereto.