阅读说明：本技术 一种y型进砂的水切割刀头 (Y-shaped sand feeding water cutting tool bit ) 是由 罗金玉 刘宁 卞金平 于 2021-05-27 设计创作，主要内容包括：本发明涉及水切割刀头技术领域,公开一种Y型进砂的水切割刀头,包括喷头组件、进水件、混砂件、进砂件及砂水喷管,喷头组件上设有通水孔,进水件能够与通水孔连通,混砂件固定设置在喷头组件内,混砂件上设有进水孔、两个混砂孔及与进水孔和两个混砂孔连通的混砂室,两个混砂孔以进水孔的中心轴线为对称轴对称设置,进砂件与两个混砂孔连通,砂水喷管与混砂件抵接,砂水喷管内设有喷射孔,喷射孔与混砂室连通。本发明公开的Y型进砂的水切割刀头,解决了现有的水切割刀头的砂水混合物偏斜而降低切割效率和缩短砂水喷管的使用寿命的问题。(The invention relates to the technical field of water cutting tool bits, and discloses a Y-shaped sand feeding water cutting tool bit which comprises a spray head assembly, a water feeding piece, a sand mixing piece, a sand feeding piece and a sand water spray pipe, wherein the spray head assembly is provided with a water through hole, the water feeding piece can be communicated with the water through hole, the sand mixing piece is fixedly arranged in the spray head assembly, the sand mixing piece is provided with a water inlet hole, two sand mixing holes and a sand mixing chamber communicated with the water inlet hole and the two sand mixing holes, the two sand mixing holes are symmetrically arranged by taking the central axis of the water inlet hole as a symmetry axis, the sand feeding piece is communicated with the two sand mixing holes, the sand water spray pipe is abutted against the sand mixing piece, and the sand water spray pipe is internally provided with a spray hole which is communicated with the sand mixing chamber. The invention discloses a Y-shaped sand-feeding water cutting tool bit, which solves the problems that the cutting efficiency is reduced and the service life of a sand-water spray pipe is shortened due to the deviation of a sand-water mixture of the conventional water cutting tool bit.)

1. The utility model provides a water cutting tool bit of sand is advanced to Y type which characterized in that includes:

the nozzle assembly (1) is provided with a water through hole (101);

the water inlet piece is fixedly arranged on one side of the spray head assembly (1) and can be communicated with the water through hole (101);

the sand mixing piece (3) is fixedly arranged in the spray head assembly (1), a water inlet hole (301), two sand mixing holes (302) and a sand mixing chamber (303) communicated with the water inlet hole (301) and the two sand mixing holes (302) are formed in the sand mixing piece (3), and the two sand mixing holes (302) are symmetrically arranged by taking the central axis of the water inlet hole (301) as a symmetry axis;

the sand inlet piece (4) is fixedly arranged on one side of the spray head assembly (1) and is simultaneously communicated with the two sand mixing holes (302);

sand water spray pipe (5), with mulling piece (3) butt, be equipped with jet orifice (501) in sand water spray pipe (5), jet orifice (501) with mulling room (303) intercommunication.

2. Y-shaped sand-fed water cutting head according to claim 1, characterized in that the flow areas of the two sand mixing holes (302) are identical.

3. The Y-shaped sand-feeding water cutting head as claimed in claim 1, wherein the sand mixing holes (302) are inclined holes which are inclined towards the direction close to the sand-water nozzle (5), the central axis of each inclined hole is intersected with the central axis of the water inlet hole (301) and the included angle formed by the central axis and the central axis is 0-90 degrees.

4. Y-shaped sand-fed water cutting head as claimed in claim 1, characterized in that the outer diameters of the mutually abutting ends of the sand mulling (3) and the sand-water lance (5) are equal.

5. The Y-shaped sand-feeding water cutting head as claimed in claim 1, wherein a transition hole (502) is arranged on the sand-water nozzle (5), and the transition hole (502) is communicated with the sand mixing chamber (303) and the jet hole (501).

6. The Y-shaped sand-feeding water cutting tool bit as claimed in claim 5, wherein the sand mixing chamber (303) comprises a horn hole (3031) and a column hole (3032) which are communicated, and the high-pressure water flowing out of the water inlet hole (301) sequentially passes through the small end of the horn hole (3031) and the large end of the horn hole (3031) and enters the column hole (3032).

7. The Y-fed water cutting head as claimed in claim 6, wherein the transition hole (502) is a tapered hole having a larger diameter at its larger end than the diameter of the cylindrical hole (3032).

8. The Y-shaped sand-feeding water cutting head as claimed in claim 1, wherein the sand mulling piece (3) and the nozzle assembly (1) are communicated through a communication hole (60) on a connecting block (6), and the diameter of the outlet end of the communication hole (60) is smaller than the diameter of the inlet end of the communication hole (60).

9. The Y-shaped sand-feeding water cutting tool bit as claimed in claim 1, wherein the nozzle assembly (1) comprises a nozzle body (11) and a clamping pipe (12) fixed on the nozzle body (11), the lower end of the clamping pipe (12) extends out of the nozzle body (11), the clamping pipe (12) and the sand mixing piece (3) form a sand cavity (102), and the sand cavity (102) is communicated with the sand feeding piece (4) and the two sand mixing holes (302).

10. The Y-shaped sand-feeding water cutting bit as claimed in claim 9, wherein the sand-water nozzle (5) is sleeved with a first fastening member (71), the first fastening member (71) is in threaded connection with the clamping tube (12), the clamping tube (12) is sleeved with a second fastening member (72), and the second fastening member (72) is in threaded connection with the nozzle body (11).

Technical Field

The invention relates to the technical field of water cutting tool bits, in particular to a Y-shaped sand feeding water cutting tool bit.

Background

As shown in fig. 1, the outlet of the sand inlet 100 of the conventional water cutting head is directly communicated with the water inlet 2001 of the sand mixer 200, and the sand inlet 100 and the water inlet 2001 are arranged at a certain included angle and the sand mixed with the high-pressure water column in the water inlet 2001 has a certain relative speed, so that the flow direction of the sand-water mixture formed by mixing the sand and the high-pressure water has a certain deviation, and not only can certain impact be generated on the sand mixer 200, but also certain impact can be generated on the sand-water nozzle 300, thereby reducing the service lives of the sand mixer 200 and the sand-water nozzle 300.

If the sand-water mixture slightly deflects, the sand-water mixture can smoothly pass through the injection hole 3001 of the sand-water spray pipe 300, but the sand-water mixture can cause linear impact on the inner wall of the sand-water spray pipe 300, and the outlet of the injection hole 3001 is oval, so that the service life of the sand-water spray pipe 300 is shortened, and the cutting efficiency is reduced; if the sand-water mixture is moderately inclined, the sand-water mixture cannot smoothly pass through the injection hole 3001 of the sand-water spray pipe 300, the sand-water mixture directly impacts the inner wall of the sand-water spray pipe 300 at the lower half part, the outlet of the injection hole 3001 is in a sharp-nose shape, the service life of the sand-water spray pipe 300 is seriously shortened, and the cutting efficiency is extremely poor; if the sand-water mixture is seriously inclined, the sand-water mixture directly impacts the inner wall of the sand-water nozzle 300 of the upper half and causes mirror reflection, the outlet of the injection hole 3001 is almost intact, but the inner wall of the sand-water nozzle 300 is almost dimpled and cannot be cut at all.

Disclosure of Invention

Based on the above, the invention aims to provide a Y-shaped sand-feeding water cutting tool bit, which solves the problems that the cutting efficiency is reduced and the service life of a sand-water spray pipe is shortened due to the deviation of a sand-water mixture of the conventional water cutting tool bit.

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

a Y-feed sand water-cutting bit, comprising: the nozzle assembly is provided with a water through hole; the water inlet piece is fixedly arranged on one side of the spray head assembly and can be communicated with the water through hole; the sand mixing piece is fixedly arranged in the spray head assembly, a water inlet hole, two sand mixing holes and a sand mixing chamber communicated with the water inlet hole and the two sand mixing holes are formed in the sand mixing piece, and the two sand mixing holes are symmetrically arranged by taking the central axis of the water inlet hole as a symmetry axis; the sand inlet piece is fixedly arranged on one side of the spray head assembly and is simultaneously communicated with the two sand mulling holes; the sand water spray pipe is abutted to the sand mixing piece, and a spray hole is formed in the sand water spray pipe and communicated with the sand mixing chamber.

As a preferable scheme of the Y-shaped sand feeding water cutting head, the flow areas of the two sand mixing holes are the same.

As a preferable scheme of the Y-shaped sand feeding water cutting tool bit, the sand mixing holes are inclined holes, the inclined holes incline towards the direction close to the sand water spray pipe, the central axis of each inclined hole is intersected with the central axis of the water inlet hole, and the included angle formed by the central axis of each inclined hole and the central axis of the water inlet hole is 0-90 degrees.

Preferably, the Y-shaped sand-feeding water cutting head is configured such that the sand mixer and the sand-water nozzle are in contact with each other at one end thereof and have the same outer diameter.

As a preferred scheme of the Y-shaped sand feeding water cutting tool bit, a transition hole is formed in the sand-water spray pipe and is communicated with the sand mixing chamber and the jet hole.

As a preferred scheme of the Y-shaped sand feeding water cutting tool bit, the sand mixing chamber comprises a horn hole and a columnar hole which are communicated, and high-pressure water flowing out of the water inlet hole sequentially passes through the small end of the horn hole and the large end of the horn hole and enters the columnar hole.

As a preferable scheme of the Y-shaped sand-feeding water cutting tool bit, the transition hole is a tapered hole, and the diameter of the large end of the tapered hole is larger than that of the cylindrical hole.

As a preferable scheme of the water cutting tool bit for Y-shaped sand feeding, the sand mixing piece and the nozzle assembly are communicated through a communication hole on a connecting block, and the diameter of the outlet end of the communication hole is smaller than that of the inlet end of the communication hole.

As a preferred scheme of the Y-shaped sand feeding water cutting tool bit, the spray head assembly comprises a spray head body and a clamping pipe fixed on the spray head body, the lower end of the clamping pipe extends out of the spray head body, the clamping pipe and the sand mixing piece form a sand cavity, and the sand cavity is communicated with the sand feeding piece and the two sand mixing holes.

As a preferred scheme of the Y-shaped sand-feeding water cutting tool bit, a first fastener is sleeved on the sand-water spray pipe and is in threaded connection with the pipe clamping pipe, a second fastener is sleeved on the pipe clamping pipe and is in threaded connection with the spray head body.

The invention has the beneficial effects that: the two sand mixing holes additionally arranged on the Y-shaped sand inlet water cutting tool bit are symmetrically arranged by taking the central axis of the water inlet hole as a symmetry axis, the impact force of two strands of sand entering a sand mixing chamber through the sand mixing holes on a water column at the outlet of the water inlet hole is almost the same, so that the component forces of the impact force of the two strands of sand on the water column in the horizontal direction of a sand mixing piece are basically the same and are opposite in direction, the probability of deflection generated after the water column and the sand are mixed is reduced, the sand-water mixture can smoothly pass through the jet holes of the sand-water jet pipe, the sand-water mixture cannot impact the inner wall of the sand-water jet pipe, the outlet of the jet holes is circular, the service life of the sand-water jet pipe is prolonged, and the cutting efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a prior art water cutting head;

FIG. 2 is a cross-sectional view in one direction of a Y-feed sand water cutting head provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a Y-feed sand water cutting insert in another orientation according to an embodiment of the present invention;

fig. 4 is a partial enlarged view of fig. 3 at a.

In fig. 1:

100. a sand inlet part; 200. mixing sand; 2001. a water inlet hole; 300. a sand-water spray pipe; 3001. and ejecting the hole.

In fig. 2-4:

1. a showerhead assembly; 101. a water through hole; 102. a sand cavity; 11. a spray head body; 12. clamping the pipe;

2. a water valve assembly; 21. a cylinder block; 22. a cylinder; 23. a valve cover; 24. a valve core;

3. mixing sand; 301. a water inlet hole; 302. mixing sand holes; 303. a sand mixing chamber; 3031. a horn hole; 3032. a columnar hole;

4. a sand inlet part;

5. a sand-water spray pipe; 501. an injection hole; 502. a transition hole;

6. connecting blocks; 60. a communicating hole;

71. a first fastener; 72. a second fastener.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a water-jet cutter head of Y type sand feeding, as shown in fig. 2 to 4, including shower nozzle subassembly 1, water inlet piece (not shown in the figure), mulling piece 3, sand inlet piece 4 and sand water spray pipe 5, be equipped with limbers 101 on shower nozzle subassembly 1, water inlet piece is fixed to be set up in one side of shower nozzle subassembly 1 and can communicate with limbers 101, mulling piece 3 is fixed to be set up in shower nozzle subassembly 1, be equipped with inlet opening 301 on mulling piece 3, two mulling holes 302 and mulling chamber 303 that communicates with inlet opening 301 and two mulling holes 302, two mulling holes 302 use the central axis of inlet opening 301 to set up as symmetry axis symmetry, sand inlet piece 4 is fixed to be set up in one side of shower nozzle subassembly 1 and simultaneously communicates with two mulling holes 302, sand water spray pipe 5 and mulling piece butt 3, be equipped with jet orifice 501 in sand water spray pipe 5, jet orifice 501 communicates with mulling chamber 303.

Note that the flow areas of the two sand mixing holes 302 in this embodiment are equal. The two sand mixing holes 302 which are equal in flow area and symmetrically arranged by taking the central axis of the water inlet hole 301 as a symmetry axis can ensure that the flow of two sand strands mixed with the water column is basically equal, so that the impact force of the two sand strands on the water column is basically the same, and the probability of inclination of the sand-water mixture is further reduced.

The two sand mixing holes 302 additionally arranged on the Y-shaped sand feeding water cutting tool bit are symmetrically arranged by taking the central axis of the water inlet 301 as a symmetry axis, the impact force of two sand strands entering the sand mixing chamber 303 through the sand mixing holes 302 on the water column at the outlet of the water inlet 301 is almost the same, the component forces of the impact force of the two sand strands on the water column in the horizontal direction of the sand mixing piece 3 are basically the same and are opposite in direction, the probability of deviation generated after the water column and the sand are mixed is reduced, the sand-water mixture can smoothly pass through the jet holes 501 of the sand-water jet pipe 5, the sand-water mixture cannot impact the inner wall of the sand-water jet pipe 5, the outlet of the sand-water jet pipe 501 is circular, the service life of the sand-water jet pipe 5 is prolonged, and the cutting efficiency is improved.

Specifically, as shown in fig. 3 and 4, the sand mixing holes 302 of the present embodiment are inclined holes, the inclined holes are inclined toward the direction close to the sand-water nozzle 5, the central axis of each inclined hole intersects with the central axis of the water inlet hole 301, and the included angle formed between the central axis and the central axis is 0-90 °. Generally, the larger the angle between the central axis of each inclined hole and the central axis of the water inlet hole 301, the smaller the component of the impact force of the sand on the water column in the horizontal direction of the kneaded sand piece 3, and even if there is a difference in the component of the impact force of the two sands on the water column in the horizontal direction of the kneaded sand piece 3, the smaller the influence of the two sands on the water column when the two sands are mixed with the water column. In other embodiments, the central axis of the sand mixing hole 302 is perpendicular to the central axis of the water inlet hole 301, and the impact forces of the two sand streams to the water column are substantially the same and opposite in direction, so that the sand-water mixture can smoothly pass through the injection hole 501 of the sand-water nozzle 5.

As shown in fig. 2 to 4, the outer diameters of the sand kneading member 3 and the sand water nozzles 5 of the present embodiment are equal at the end where they abut against each other. Specifically, the nozzle assembly 1 is provided with the mounting hole, and since the diameters of the sand mulling part 3 and the sand water spray pipe 5 are equal, the mounting hole is a hole with the same cross-sectional area and the same cross-sectional area, and compared with the existing mounting hole with a step surface, the mounting hole of the nozzle assembly 1 of the embodiment is more convenient to process. Because the sand-water mixture hardly strikes the sand mulling 3, there is no need to extend the life of the sand mulling 3 by increasing the diameter of the sand mulling 3, the diameter of the sand mulling 3 is smaller than that of the sand mulling 3 in the prior art, and the miniaturization design of the water cutting cutter head for Y-shaped sand feeding is facilitated.

As shown in fig. 2 and 4, the sand-water nozzle 5 of the present embodiment is provided with a transition hole 502, the transition hole 502 communicates the sand mixing chamber 303 and the injection hole 501, and the transition hole 502 is used for injecting the sand-water mixture in the sand mixing chamber 303 into the injection hole 501. The sand mixing chamber 303 comprises a horn hole 3031 and a column hole 3032 which are communicated with each other, and high-pressure water flowing out of the water inlet hole 301 sequentially passes through the small end of the horn hole 3031 and the large end of the horn hole 3031 and enters the column hole 3032. Because the cross-sectional area of the sand mixing chamber 303 is larger than that of the water inlet hole 301, negative pressure is formed in the sand mixing chamber 303 to adsorb sand in the sand mixing hole 302, and the sand is mixed with the water column to form a sand-water mixture.

Further, as shown in fig. 2 and 4, the transition hole 502 is a tapered hole having a larger diameter at its large end than the diameter of the cylindrical hole 3032. Because the sand mixing piece 3 is abutted with the sand water spray pipe 5, the diameter of the large end of the conical hole is larger than that of the cylindrical hole 3032, and the sand water mixture sprayed out from the cylindrical hole 3032 can completely enter the spray hole 501 through the transition hole 502 and is finally used for cutting a workpiece.

As shown in fig. 2 and 3, the sand mixing member 3 and the head assembly 1 of the present embodiment communicate through the communication hole 60 of the connection block 6, and the diameter of the outlet end of the communication hole 60 is smaller than the diameter of the inlet end of the communication hole 60. The pressure of the water column at the inlet of the communication hole 60 is lower than the pressure of the water column at the outlet of the communication hole 60 in the flow direction of the high pressure water, so that the high pressure water smoothly enters the sand mulling part 3 through the connection block 6.

As shown in fig. 2 and fig. 3, the nozzle assembly 1 of the present embodiment includes a nozzle body 11 and a clamping pipe 12 fixed on the nozzle body 11, a lower end of the clamping pipe 12 extends out of the nozzle body 11, the clamping pipe 12 and the sand mixing element 3 form a sand chamber 102, and the sand chamber 102 is communicated with the sand inlet 4 and two sand mixing holes 302. Specifically, both of the sand mixing holes 302 are offset from the sand inlet 4, the central angle of the projection of the sand inlet 4 on the sand mixing element 3 corresponding to one sand mixing hole 302 on the sand mixing element 3 is 90 °, and similarly, the central angle of the projection of the sand inlet 4 on the sand mixing element 3 corresponding to the other sand mixing hole 302 on the sand mixing element 3 is also 90 °. When the sand in the sand inlet 4 enters the sand cavity 102, the sand firstly collides with the sand mixing part 3, the speed of the sand entering the sand cavity 102 is reduced, and then the sand in the sand cavity 102 is divided into two parts which respectively flow towards the directions close to the two sand mixing holes 302, so that the flow rates of the sand entering the two sand mixing holes 302 are basically equal, and the probability of skew of the sand-water mixture is further reduced.

In order to realize the fixed connection of the sand water spray pipe 5, the clamping pipe 12 and the spray head, as shown in fig. 2 and 3, a first fastening member 71 is sleeved on the sand water spray pipe 5, the first fastening member 71 is in threaded connection with the clamping pipe 12, a second fastening member 72 is sleeved on the clamping pipe 12, the second fastening member 72 is in threaded connection with the spray head body 11, wherein the first fastening member 71 is in interference fit with the sand water spray pipe 5, the first fastening member 71 is screwed on the clamping pipe 12, the second fastening member 72 is in clearance fit with the clamping pipe 12, the second fastening member 72 is screwed on the spray head body 11, both the first fastening member 71 and the second fastening member 72 are nuts, and a cushion washer is clamped between the two nuts.

As shown in fig. 2 and 3, the Y-shaped sand-feeding water cutter head of the embodiment further includes a water valve assembly 2 disposed on the nozzle assembly 1, the water valve assembly 2 includes a cylinder seat 21, a cylinder 22, a valve cover 23 and a valve core 24, the cylinder seat 21 is fixedly disposed on the nozzle assembly 1, the cylinder 22 is fixedly disposed on the cylinder seat 21, the valve cover 23 is disposed on the nozzle assembly 1, the valve cover 23 is provided with a switch hole, the switch hole is respectively communicated with the water inlet piece and the water inlet hole 301, the valve core 24 is fixedly disposed at the movable end of the cylinder 22, the valve core 24 can be attached to the switch hole, and the movable end of the cylinder 22 can drive the valve core 24 to move in the switch hole so as to connect or disconnect the water inlet piece and the water inlet hole 301 through the switch hole. When the cylinder 22 drives the valve core 24 to move upwards, the valve core 24 moves upwards relative to the switch hole, when the lower end of the valve core 24 is positioned above the outlet of the water inlet piece, the water inlet piece is communicated with the water inlet hole 301, and at the moment, the water cutting tool bit of the Y-shaped sand inlet is in a working state; when the cylinder 22 drives the valve core 24 to move downwards, the valve core 24 moves downwards relative to the switch hole, when the valve core 24 is over against the outlet of the water inlet piece, the water inlet piece is disconnected with the water inlet hole 301, and at the moment, the Y-shaped sand inlet water cutting tool bit is in an out-of-operation state.

When the Y-shaped sand feeding water cutting tool bit of the embodiment cuts a workpiece, the working time of the Y-shaped sand feeding water cutting tool bit exceeds 300 hours, the existing water cutting tool bit can only work for 100 hours at most, and compared with the existing water cutting tool bit, the Y-shaped sand feeding water cutting tool bit has higher cutting efficiency and longer service lives of the sand mixing piece 3 and the sand water spray pipe 5.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.