阅读说明：本技术 一种高压水流切割喷头 (High-pressure water flow cutting nozzle ) 是由 不公告发明人 于 2020-12-28 设计创作，主要内容包括：本发明属于切割设备技术领域,具体涉及一种高压水流切割喷头；利用水流腔体内壁上螺旋向下内凹陷的膛线引导高压水流旋转,形成高压旋转水流,高压旋转水流在混合腔体带动加入的磨料同步旋转,利用涡旋现象,将密度大的磨料集中在水流的中心,由于磨料在内水流在外,因此可以大幅度减小磨料对于喷头内壁的磨损。(The invention belongs to the technical field of cutting equipment, and particularly relates to a high-pressure water flow cutting nozzle; utilize spiral inwards sunken rifling guide high pressure rivers rotatory on the rivers cavity inner wall, form the rotatory rivers of high pressure, the rotatory rivers of high pressure drive the abrasive material synchronous revolution that adds at mixed cavity, utilize the vortex phenomenon, concentrate the abrasive material that density is big at the center of rivers, because rivers including the abrasive material are outside, consequently can reduce the wearing and tearing of abrasive material to the shower nozzle inner wall by a wide margin.)

1. A high-pressure water flow cutting nozzle comprises a nozzle main body (1) and a high-pressure water pipe (2), and is characterized in that the nozzle main body (1) is hollow, and the interior of the nozzle main body is provided with the high-pressure water pipe (2), a pressurizing nozzle (3), a mixing pipe (4) and an injection pipe (5) from top to bottom; the high-pressure water pipe (2) is hollow and cylindrical and is a water flow cavity (11), and an inward-concave rifling (111) is spirally and downwards arranged on the inner wall of the high-pressure water pipe; the pressurizing nozzle (3) is in a circular truncated cone shape with a small upper part and a large lower part, and the inside of the pressurizing nozzle is hollow and is in a circular truncated cone shape with a large upper part and a small lower part, and a pressurizing cavity (12); the mixing pipe (4) is hollow and is in a circular truncated cone shape, and the upper part of the mixing pipe is a mixing cavity (13); the inner part of the injection pipe (5) is hollow and cylindrical and is an injection cavity (14), and an outward extending part forms an injection port (6);

the improved mixing device is characterized in that a first grinding pipe (21) and a second grinding pipe (22) are respectively arranged on two sides of the mixing pipe (4), inlets of the first grinding pipe (21) and the second grinding pipe (22) are connected with the mixing cavity (13) and symmetrically arranged along the central axis, the feeding directions of the first grinding pipe (21) and the second grinding pipe (22) are parallel to each other, the feeding direction of the first grinding pipe is tangent to the edge of the side wall of the mixing cavity (12), and the feeding direction of the first grinding pipe is consistent with the rotating direction of the rifling (111).

2. The high pressure water jet cutting die of claim 1, wherein: the inclination angle of the rifling (111) based on the horizontal plane is 60-80 degrees.

3. The high pressure water jet cutting die of claim 1, wherein: the sunken tangent plane of the rifling (111) is a right-angled triangle with unequal sides, the long side of the right-angle side is positioned on the side wall of the water flow cavity (11), the short side of the right-angle side is perpendicular to the side wall of the water flow cavity (11) and is inwards concave, and the hypotenuse is inclined downwards and is intersected with the long side of the right-angle side on the side wall of the water flow cavity (11).

4. The high pressure water jet cutting die of claim 1, wherein: the inclination angle of the first grinding pipe (21) and the second grinding pipe (22) taking a horizontal plane as a reference is 0-10 degrees, and the height position of an inlet connected with the mixing cavity (13) is lower than that of the outward extension section or is equivalent to that of the outward extension section.

5. The high pressure water jet cutting die of claim 1, wherein: the diameter of the water flow cavity (11) is the same as that of the upper opening of the pressurizing cavity (12).

6. The high pressure water jet cutting die of claim 1, wherein: the diameter of the lower opening of the pressurizing cavity (12) is smaller than that of the upper opening of the mixing cavity (13).

7. The high pressure water jet cutting die of claim 1, wherein: the diameter of the lower opening of the mixing cavity (13) is the same as that of the injection cavity (14).

Technical Field

The invention belongs to the technical field of cutting equipment, and particularly relates to a high-pressure water flow cutting nozzle.

Background

The water cutting equipment is widely used for cutting various soft and hard materials, when cutting hard materials such as metal and the like, in order to improve the cutting efficiency, abrasive materials are added into high-pressure water at the same time, and the abrasive materials quickly impact the surface of the cut materials under the driving of high-pressure water jet so as to carry out auxiliary cutting; however, the abrasive is added in the high-pressure water flow of the existing water cutting nozzle, so that the high-pressure water flow also abrades the inner wall of the nozzle, the inner cavity is gradually enlarged due to abrasion, the pressure is uneven or reduced, and the cutting effect of water cutting is affected; therefore, a high-pressure water jet cutting nozzle capable of reducing abrasion of the inner wall of the nozzle caused by the high-pressure water jet with the abrasive is needed.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a high-pressure water flow cutting nozzle aiming at the defects of the prior art, so as to solve the problems in the prior art.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a high-pressure water flow cutting nozzle comprises a nozzle main body and a high-pressure water pipe, wherein the nozzle main body is hollow, and the inside of the nozzle main body is provided with the high-pressure water pipe, a pressurizing nozzle, a mixing pipe and an injection pipe from top to bottom; the interior of the high-pressure water pipe is hollow and cylindrical and is a water flow cavity, and the inner wall of the high-pressure water pipe is spirally downward provided with an inward sunken rifling; the pressurizing nozzle is in a circular table shape with a small upper part and a big lower part, and the inside of the pressurizing nozzle is hollow and is in a circular table shape with a large upper part and a small lower part and is a pressurizing cavity; the interior of the mixing tube is hollow and is in a circular truncated cone shape, and the upper part is large and the lower part is small as a mixing cavity; the inner part of the injection pipe is hollow and cylindrical and is used as an injection cavity, and the outward extending part forms an injection port;

the two sides of the mixing pipe are respectively provided with a first grinding pipe and a second grinding pipe, the inlets of the first grinding pipe and the second grinding pipe are connected with the mixing cavity and symmetrically arranged along the central axis, the feeding directions of the first grinding pipe and the second grinding pipe are parallel to each other, and the feeding direction is tangent to the edge of the side wall of the mixing cavity and consistent with the rotating direction of the rifling.

Preferably, the inclination angle of the rifling with respect to the horizontal plane is 60 to 80 °.

Preferably, the sunken tangent plane of the rifling is a scalene right-angled triangle, the long side of the right-angle side of the rifling is positioned on the side wall of the water flow cavity, the short side of the right-angle side of the rifling is perpendicular to the side wall of the water flow cavity and is inwards concave, and the hypotenuse of the rifling is inclined downwards and is intersected with the long side of the right-angle side of the rifling on the side wall.

Preferably, the inclination angle of the first grinding pipe and the second grinding pipe is 0-10 degrees based on the horizontal plane, and the height position of an inlet connected with the mixing cavity is lower than the height position of the outward extension section or equivalent to the height position of the outward extension section.

Preferably, the diameter of the water flow chamber is the same as the diameter of the upper opening of the pressurizing chamber.

Preferably, the diameter of the lower opening of the pressurizing chamber is smaller than the diameter of the upper opening of the mixing chamber.

Preferably, the diameter of the lower opening of the mixing chamber is the same as the diameter of the ejection chamber.

Advantageous effects

The high-pressure rotating water flow is guided to rotate by the aid of the rifling which is spirally recessed downwards on the inner wall of the water flow cavity, the high-pressure rotating water flow is formed after the high-pressure rotating water flow passes through the pressurizing nozzle, the feeding direction of the grinding material pipe is tangent to the edge of the side wall of the mixing cavity and is consistent with the rotating direction of the rifling, the high-pressure rotating water flow drives the added grinding materials to synchronously rotate in the mixing cavity, and the grinding materials are higher than water in density, so that a vortex phenomenon can be generated in the rotating process, the grinding materials with high density are concentrated in the center of the water flow, the high-pressure rotating water flow mixed with the grinding materials continuously passes through the jet pipe, and the grinding materials are outside the inner water flow, so that.

Drawings

FIG. 1 is a longitudinal cross-sectional view of the present invention;

fig. 2 is a transverse cross-sectional view of the invention at the level of the abrasive inlet.

Reference numerals in the figures

1. A nozzle body; 2. a high pressure water pipe; 3. a pressurizing spout; 4. a mixing tube; 5. an injection pipe; 6. a spout; 11. a water flow cavity; 12. a pressurizing cavity; 13. a mixing chamber; 14. an injection cavity; 21. a first grinding pipe; 22. a second grinding pipe; 111. rifling.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "thickness", "width", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Example 1

Referring to fig. 1-2, a high-pressure water flow cutting nozzle comprises a nozzle body 1 and a high-pressure water pipe 2, wherein the nozzle body 1 is hollow, and the high-pressure water pipe 2, a pressurizing nozzle 3, a mixing pipe 4 and an injection pipe 5 are arranged in the nozzle body from top to bottom; the high-pressure water pipe 2 is hollow and cylindrical and is a water flow cavity 11, and an inwards-concave rifling 111 is spirally and downwards arranged on the inner wall of the high-pressure water pipe; the pressurizing nozzle 3 is in a circular truncated cone shape with a small upper part and a large lower part, and the inside of the pressurizing nozzle is hollow and is in a circular truncated cone shape with a large upper part and a small lower part, and a pressurizing cavity 12 is formed; the mixing tube 4 is hollow and is in a circular truncated cone shape, and the upper part is a mixing cavity 13; the inner part of the injection pipe 5 is hollow and cylindrical and is an injection cavity 14, and an outward extending part forms an injection port 6;

a first grinding pipe 21 and a second grinding pipe 22 are respectively arranged on two sides of the mixing pipe 4, inlets of the first grinding pipe 21 and the second grinding pipe 22 are connected with the mixing cavity 13 and symmetrically arranged along the central axis, feeding directions of the first grinding pipe 21 and the second grinding pipe 22 are parallel to each other, and the feeding direction is tangent to the edge of the side wall of the mixing cavity 12 and is consistent with the rotating direction of the rifling 111.

In a further technical scheme, preferably, the inclination angle of the rifling 111 based on the horizontal plane is 60-80 degrees.

In a further technical scheme, the sunken section of the rifling 111 is a right-angled triangle with unequal sides, the long side of the right-angled side is positioned on the side wall of the water flow cavity 11, the short side of the right-angled side is perpendicular to the side wall of the water flow cavity 11 and is inwards concave, and the hypotenuse is inclined downwards and is intersected with the long side of the right-angled side on the side wall of the water flow cavity 11.

In a further technical scheme, the inclination angle of the first grinding pipe 21 and the second grinding pipe 22 based on the horizontal plane is 0-10 degrees, and the height position of an inlet connected with the mixing cavity 13 is lower than the height position of the outward extension section or is equivalent to the height position of the outward extension section.

In a further technical scheme, the diameter of the water flow cavity 11 is the same as that of the upper opening of the pressurizing cavity 12.

In a further technical scheme, the diameter of the lower opening of the pressurizing cavity 12 is smaller than that of the upper opening of the mixing cavity 13.

In a further technical scheme, the diameter of the lower opening of the mixing cavity 13 is the same as that of the injection cavity 14.

The high-pressure rotating water flow is guided to rotate by the aid of the rifling which is spirally recessed downwards on the inner wall of the water flow cavity, the high-pressure rotating water flow is formed after the high-pressure rotating water flow passes through the pressurizing nozzle, the feeding direction of the grinding material pipe is tangent to the edge of the side wall of the mixing cavity and is consistent with the rotating direction of the rifling, the high-pressure rotating water flow drives the added grinding materials to synchronously rotate in the mixing cavity, and the grinding materials are higher than water in density, so that a vortex phenomenon can be generated in the rotating process, the grinding materials with high density are concentrated in the center of the water flow, the high-pressure rotating water flow mixed with the grinding materials continuously passes through the jet pipe, and the grinding materials are outside the inner water flow, so that.

While the foregoing description of the disclosed embodiments will so fully enable those skilled in the art to make or use the invention, many modifications of the embodiments will become apparent to those skilled in the art that will be necessary in view of the teachings of the present invention, and it is to be understood that other arrangements may be devised in accordance with the principles of the invention and that the invention is not to be limited to the embodiments illustrated herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.