阅读说明：本技术 一种超高压液体射流的钻石喷嘴及其制作方法 (Diamond nozzle of ultrahigh-pressure liquid jet and manufacturing method thereof ) 是由 陈世伟 李枝城 于 2019-11-30 设计创作，主要内容包括：本发明涉及喷嘴技术技术,具体是一种超高压液体射流的钻石喷嘴及其制作方法,包括钻石片、金属纳米粉层、金属压盖和金属外壳,所述金属外壳设置有内置空腔,所述空腔填充有金属纳米粉并且形成金属纳米粉层,所述金属纳米粉层内设置有钻石片,所述钻石片的设置在金属外壳的空腔中轴线位置,被金属纳米粉末紧密包裹并与金属外壳融为一体,所述金属外壳的顶部设置有上置开口,所述金属压盖上设置有下置开口,所述钻石片内穿设有喷嘴通孔,并与上置开口和下置开口相连通。本申请采用金钢石作为核心材料,硬度和流量系数高,安装于流体设备的切割头和喷头中,射流效果更好而且使用过程中不会产生崩裂和孔口的钝化,使用寿命远超其它材料的喷嘴。(The invention relates to a nozzle technology, in particular to a diamond nozzle of ultrahigh pressure liquid jet and a manufacturing method thereof, wherein the diamond nozzle comprises a diamond sheet, a metal nano powder layer, a metal gland and a metal shell, the metal shell is provided with a built-in cavity, the cavity is filled with metal nano powder and forms the metal nano powder layer, the diamond sheet is arranged in the metal nano powder layer, the diamond sheet is arranged at the axis position in the cavity of the metal shell, is tightly wrapped by the metal nano powder and is integrated with the metal shell, the top of the metal shell is provided with an upper opening, the metal gland is provided with a lower opening, and the diamond sheet is internally provided with a nozzle through hole in a penetrating manner and communicated with the upper opening and the lower opening. This application adopts diamond as core material, and hardness and flow coefficient are high, install in fluidic device's cutting head and shower nozzle, and the efflux effect is better and can not produce the passivation that bursts apart and drill way in the use, and life is far beyond the nozzle of other materials.)

1. The diamond nozzle of the ultrahigh pressure liquid jet comprises a diamond sheet (1), a metal nano powder layer (2), a metal gland (3) and a metal shell (4), and is characterized in that the metal shell (4) is provided with a built-in cavity, the metal gland (3) is covered and fixed at an opening of the built-in cavity, metal nano powder is filled in the built-in cavity and forms the metal nano powder layer (2), the diamond sheet (1) is arranged in the metal nano powder layer (2), the diamond sheet (1) is arranged at the central axis position of the metal shell (4) and is parallel to the end face of the metal shell (4), the metal nano powder layer (2) tightly wraps the diamond sheet (1) and is integrated with the metal shell (4), the top of the metal shell (4) is provided with an upper opening (5), and the metal gland (3) is provided with a lower opening (6), the diamond sheet (1) is internally provided with a nozzle through hole (7) in a penetrating way, and the top of the lower opening (6) at the bottom of the upper opening (5) is communicated with the nozzle through hole (7). And turning the external contour of the metal shell (4) with the polished through hole (7) to a proper size.

2. Diamond nozzle of ultra high pressure liquid jet according to claim 1, characterized in that after high temperature and high pressure sintering, the metal nano powder layer (2) tightly wraps the diamond sheet (1) and is integrated with the metal shell (4).

3. Diamond nozzle for ultra high pressure liquid jet according to claim 2, characterized in that the diamond sheet (1) is arranged in the middle axis of the metal shell (4) parallel to the end face and completely wrapped in the inner cavity of the metal nano powder layer (2).

4. Diamond nozzle of an ultra-high pressure liquid jet according to claim 1, characterized in that the bottom of said overhead opening (5) extends to the upper surface of the diamond sheet (1) and the top of said lower opening (6) extends to the lower surface of the diamond sheet (1).

5. Diamond nozzle according to claim 1, characterized in that said nozzle through holes (7) are arranged as linear straight holes, said upper openings (5) being in communication with said lower openings (6).

6. Diamond nozzle according to claim 5, characterized in that said nozzle through holes (7) are arranged as straight upper holes and tapered lower holes, the top of said nozzle through holes (7) is connected to said upper opening (5) through straight holes, and the bottom of said nozzle through holes (7) is connected to said lower opening (6) through tapered through holes.

7. The ultra high pressure liquid jet diamond nozzle according to claim 6, wherein the metal shell (4) with the through hole (7) polished is turned to a suitable size for mounting in cutting heads and spray heads of various fluid equipments.

8. A method of making a diamond nozzle for an ultra-high pressure liquid jet as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:

the method comprises the following steps: the metal material is adopted, the cylindrical shape and the built-in cavity are processed by a lathe, and the outer cylinder degree and the end face verticality are ensured to form the metal shell (4);

step two: cutting and polishing diamond raw materials into diamond sheets (1) with uniform outer diameter and thickness, then placing the diamond sheets (1) into a built-in cavity of a metal shell (4), and filling metal nano powder into the built-in cavity of the metal shell (4); according to different implementation structures, the depth of the diamond sheet (1) wrapped by the metal nano powder in the built-in cavity is regulated and controlled;

step three: pressing a metal gland (3), and tightly wrapping the diamond sheet (1) by metal nano powder and integrating the diamond sheet with the metal shell (4) into a whole through high-temperature and high-pressure sintering;

step four: the metal shell (4) is finely turned into a cylindrical shape on a lathe, and tapered holes or straight holes on two end faces are deep into the surface of the diamond, so that the diamond can be conveniently punched in the next step;

step five: using laser to aim at the center of the diamond to punch different hole patterns and hole diameters;

step six: grinding and polishing the inner hole of the diamond to a specified aperture and roughness by using an ultrasonic wave and a wire polishing machine;

step seven: turning the outer contour of the metal shell with the polished diamond inner hole on a lathe to the size suitable for being filled with a water jet nozzle and a spray head to obtain a finished diamond product;

step eight: the prepared diamond nozzle can be assembled in various water jet nozzles for ultrahigh pressure injection.

Technical Field

The invention relates to a nozzle technology, in particular to a diamond nozzle of ultrahigh pressure liquid jet and a manufacturing method thereof.

Background

The nozzle belongs to an energy conversion element, converts pressure energy of an aqueous medium into kinetic energy of a water jet, and then emits the kinetic energy of the water jet in a high-speed water jet mode, so that materials can be cleaned, crushed and cut. The high-pressure water jet has a wide range of pressure, and thus the nozzle has a wide variety of materials. The materials for manufacturing the nozzle on the market mainly comprise stainless steel, high-quality carbon steel, tool steel, hard alloy, ceramic, artificial gem, diamond and the like. The higher the pressure delivered by the pump, the higher the hardness required for material handling.

The most commonly used ultrahigh pressure nozzle material at present is an artificial gem sheet (corundum), and the hardness of the ultrahigh pressure nozzle material can reach 9 grades of Mohs. However, with market development in the field of pure water cutting and the popularization of 600MPa ultrahigh-pressure water jet, the requirement on the nozzle is higher and higher, and the nozzle has longer service life even though the water line is focused longer. In addition to a certain amount of fine solid particles, the general clear water also contains minerals which are not dissolved in water, such as calcium carbonate, manganese, iron, silicon dioxide and the like. The high-pressure water jet equipment is provided with a filtering and softening device, but the impurities cannot be completely removed, free metal fragments are also arranged in a high-pressure pipeline, and under the flushing of ultrahigh-pressure water, the edge of a jewel orifice can be slowly passivated and even broken, so that the quality of jet flow is reduced, and then the jewel cannot be used.

Disclosure of Invention

The present invention is directed to a diamond nozzle for ultra-high pressure liquid jet and a method for manufacturing the same, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an ultrahigh pressure liquid fluidic diamond nozzle, includes diamond piece, metal nanometer bisque, metal gland and metal casing, metal casing is provided with built-in cavity, metal gland lid closes the bottom of fixing at built-in cavity, built-in cavity intussuseption is filled with metal nanometer powder and forms metal nanometer bisque, be provided with the diamond piece in the metal nanometer bisque, the setting of diamond piece is in metal casing's axis position and laminate with metal casing's built-in cavity inner wall, metal casing's top is provided with overhead opening, be provided with down the opening on the metal gland, wear to be equipped with the nozzle through-hole in the diamond piece, overhead open-ended bottom taper mouth, down open-ended top taper mouth and nozzle through-hole are linked together.

As a further scheme of the invention: the metal nanometer powder layer tightly wraps the diamond sheet and the metal shell is integrated.

As a further scheme of the invention: the diamond sheet is arranged on the central axis of the metal shell and completely wraps the inner cavity of the metal nano powder layer.

As a further scheme of the invention: the bottom of the upper opening extends to the metal nano powder layer. The top of the lower opening extends to the lower surface of the diamond sheet of the metal nano powder layer.

As a further scheme of the invention: the nozzle through hole is a linear straight hole, and the upper opening is communicated with the lower opening.

As a further scheme of the invention: the nozzle through hole is arranged to be a tapered hole below the upper straight hole, the top of the nozzle through hole is communicated with the upper opening through the straight hole, and the bottom of the nozzle through hole is communicated with the lower opening through the tapered hole.

The application also discloses a method for the diamond nozzle of the ultrahigh pressure liquid jet, which comprises the following steps:

the method comprises the following steps: the method is characterized in that a metal material is adopted, a cylindrical shape and a built-in cavity are machined by a lathe, and the external cylinder degree and the end face verticality are ensured to form a metal shell;

step two: cutting and polishing diamond raw materials into diamond sheets with uniform outer diameter and thickness, then placing the diamond sheets into the built-in cavity of the metal shell, and filling metal nano powder into the built-in cavity of the metal shell; according to different implementation structures, the depth of the diamond sheet wrapped by the metal nano powder in the built-in cavity is regulated and controlled;

step three: pressing a metal gland, and sintering at high temperature and high pressure to tightly wrap the diamond sheet by the metal nano powder and integrate the diamond sheet with the metal shell;

step four: the metal shell is finely turned into a cylindrical shape on a lathe, and tapered holes (or straight holes) on two end faces are deep into the surface of the diamond, so that the diamond can be conveniently punched in the next step;

step five: using laser to aim at the center of the diamond to punch different hole patterns and hole diameters;

step six: grinding and polishing the inner hole of the diamond to a specified aperture and roughness by using an ultrasonic wave and a wire polishing machine;

step seven: turning the whole metal shell with the polished diamond inner hole on a lathe to a size suitable for being filled with a water jet nozzle and a spray head to obtain a finished diamond product;

step eight: the prepared diamond nozzle can be assembled in various water jet nozzles for ultrahigh pressure injection.

Compared with the prior art, the invention has the beneficial effects that:

the metal is adopted as an external shell, the metal nano powder is used as a wrapping mechanism of a diamond sheet, the metal nano powder and the diamond sheet are integrated after high-temperature and high-pressure sintering, turning processing can be carried out on the external contour, and the metal nano powder is suitable for cutting heads and spray heads of various fluid devices.

Secondly, the diamond with the Mohs hardness of 10 grades is used as a core material to be made into a nozzle of the water jet. Compared with the traditional jewel nozzle, the service life of the jewel nozzle is prolonged by more than 10 times, the polished jewel nozzle has high flow coefficient and better jet effect.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. Also, the drawings and the description are not intended to limit the scope of the present concepts in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments.

FIG. 1 is a front cross-sectional view of a diamond sintered body according to an embodiment of the present invention.

FIG. 2 is a front sectional view of a diamond after sintering according to an embodiment of the present invention

FIG. 3 is a top view of the diamond turned and punched structure.

Fig. 4 is a first schematic structural diagram of a machine tool after punching according to an embodiment.

Fig. 5 is a schematic structural diagram of a machine tool after punching according to an embodiment.

Fig. 6 is a first schematic structural diagram after two-saw punching according to the embodiment.

Fig. 7 is a first schematic structural diagram after two-saw punching according to the embodiment.

FIG. 8 is a first schematic view of the diamond product of the present invention.

FIG. 9 is a second schematic view of the diamond product of the present invention.

FIG. 10 is a third schematic view of the diamond product of the present invention.

FIG. 11 is a fourth schematic view of the diamond product of the present invention.

FIG. 12 is a fifth schematic view of the diamond product of the present invention.

FIG. 13 is a sixth schematic view of the diamond product of the present invention.

Fig. 14, 15 and 16 are schematic diagrams of diamond nozzles embedded with diamond finished products.

Fig. 17 is a schematic view of a water cutting head with a diamond mounted nozzle.

In the figure: 1-diamond sheet, 2-metal nano powder layer, 3-metal gland, 4-metal shell, 5-upper opening, 6-lower opening and 7-nozzle through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, examples of which are shown in the drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.