CN116328970A

CN116328970A - Spray head and device for nano bubble water production

Info

Publication number: CN116328970A
Application number: CN202310409561.6A
Authority: CN
Inventors: 徐鑫焱; 冉仕琼
Original assignee: Hangzhou Xiran Consulting Management Co ltd
Current assignee: Hangzhou Xiran Consulting Management Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-06-27

Abstract

The invention discloses a spray head and a device for nano bubble water production, and relates to the technical field of nano bubble water preparation. The air bubble water jet device comprises an accelerating pipe section and a jet pipe section, wherein the accelerating pipe section and the jet pipe section are sequentially communicated along a first direction, and the first direction is parallel to the conveying direction of the air bubble water; the inner diameter of the accelerating tube section has a decreasing trend along a first direction; the inner diameter of the ejector tube section in the first direction gradually increases. The nozzle of the invention can generate a horn-shaped bubble water beam, and is easier to cut compared with bubble water with higher bundling property. And when in production, the production precision of the spray head is lower, so that the production cost is lower. Meanwhile, during production, the nozzle can be used for enabling the bubble water to excessively expand, and further, the single nozzle can be used for cutting the bubble water.

Description

Spray head and device for nano bubble water production

Technical Field

The invention relates to the technical field of nano bubble water preparation, in particular to a spray head and a device for nano bubble water production.

Background

The current methods for producing nano bubble water are various. It comprises the following steps: maze cutting, hydrodynamic cavitation, jet cutting, etc., wherein: the labyrinth cutting can generate a large amount of nano bubbles, but has small flow, and the device has very high manufacturing cost and very high precision requirement, and is generally only suitable for manufacturing nano bubble water in a laboratory. Hydrodynamic cavitation flow is very large, the number of bubbles is matched with the flow, the cost is low, the processing requirement is low, but the size of the bubble particle size is difficult to adjust and can only be controlled in a approximate range, and the uniformity of the bubble particle size is poor. The nanometer bubble water is prepared by jet cutting, the yield is relatively large, and the uniformity of the bubble particle size is good.

In current jet cutting, two opposing jet heads are required in a jet mixing box. During production, two opposite jet nozzles are utilized to spray high-speed and high-pressure bubble water for opposite flushing. The high-pressure bubble water which generates opposite flushing can be mutually cut to generate nano bubbles with smaller particle size. However, in the jet nozzle in the prior art, the generated bubble water has high bundling property, and even if two jet nozzles generate slight deviation during production, the two beams of bubble water cannot generate opposite flushing. Therefore, the precision requirement on the jet nozzle is extremely high, and the production cost of the jet nozzle is higher. Meanwhile, at least two jet nozzles are needed to be used for production in the prior art, so that the production cost is further improved.

Disclosure of Invention

The invention aims to provide a spray head and a device for producing nano bubble water, which are used for solving the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a nano bubble water production nozzle for delivering gas bubble water, comprising: the accelerating tube section and the spraying tube section are sequentially communicated along a first direction, and the first direction is parallel to the conveying direction of the bubble water; the inner diameter of the accelerating tube section has a decreasing trend along a first direction; the inner diameter of the ejector tube section in the first direction gradually increases.

In this technical scheme, preferably, the acceleration pipe section includes first acceleration pipe section, first acceleration pipe section includes: the connecting pipe and accelerating tube that communicate in proper order, the connecting pipe is used for being connected with bubble water pipe, accelerating tube reduces along the internal diameter of first direction gradually.

In this technical scheme, preferably, accelerating tube section still includes: the second accelerating tube section is communicated with one end, far away from the first accelerating tube section, of the accelerating tube, and the second accelerating tube section is used for carrying out secondary acceleration on the bubble water.

In this technical scheme, preferably, the internal diameter along the first direction of second accelerating tube section is unanimous, just first accelerating tube section, second accelerating tube section with the axial lead coincidence between the injection tube section three.

In this technical scheme, preferably, the injection pipe section includes the injection chamber, the longitudinal section of injection chamber is isosceles trapezoid, the second direction is parallel to isosceles trapezoid's waist, and the second direction by first acceleration pipe section is directional the injection pipe section, the contained angle that forms between first direction and the second direction is greater than or equal to 15, less than or equal to 22.5.

In this technical scheme, preferably, be provided with adjusting part in the first accelerating tube section, adjusting part with be formed with annular runner between the accelerating tube, adjusting part is used for adjusting annular runner's cross-sectional area.

In this technical solution, preferably, the adjusting component includes: the outer diameter of the adjusting section in a first direction is gradually reduced, the annular flow passage is formed between the adjusting section and the accelerating tube, the adjusting section passes through a connecting interface formed between the accelerating tube section and the jet tube section, and the first direction is perpendicular to the connecting interface; and the adjusting structure is used for adjusting the relative positions of the adjusting section and the accelerating tube along the first direction.

Preferably, in this technical scheme, the regulation structure includes: the connecting section is connected with the adjusting section, and external threads are formed on the outer wall of the connecting section; the internal thread is arranged on the inner wall of the connecting pipe and is matched with the external thread.

Based on the spray head for nano bubble water production, the invention also provides a nano bubble water production device, and the spray head for nano bubble water production in any one of the schemes is used.

In the technical scheme, the device further comprises a jet mixing box and at least one pair of nano bubble water production spray heads, wherein the two nano bubble water production spray heads in each pair are oppositely arranged on the jet mixing box along the gravity direction.

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

the nano bubble water production nozzle can generate horn-shaped bubble water beams, and is easier to cut compared with bubble water with higher bundling property. And when in production, the production precision of the spray head is lower, so that the production cost is lower. Meanwhile, during production, the nozzle can be used for enabling the bubble water to excessively expand, and further, the single nozzle can be used for cutting the bubble water.

Compared with the traditional jet nozzle in the market, the jet nozzle of the invention can accelerate the bubble water to a certain speed with lower energy. Further reduces the production cost of the nano bubble water.

Drawings

FIG. 1 is a schematic diagram of a device for producing nano bubble water according to the present invention;

FIG. 2 is a perspective view of a first embodiment of a spray head for nano bubble water production according to the present invention;

FIG. 3 is a longitudinal sectional view of a first embodiment of a spray head for nano bubble water production according to the present invention;

fig. 4 is a perspective view of a second embodiment of a spray head for nano bubble water production according to the present invention;

FIG. 5 is a longitudinal sectional view of a second embodiment of the spray head for nano bubble water production according to the present invention;

FIG. 6 is a perspective view of a third embodiment of a spray head for nano bubble water production according to the present invention;

FIG. 7 is an isometric view of a third embodiment of a spray head for nanobubble water production in accordance with the present invention;

FIG. 8 is a longitudinal sectional view of a third embodiment of a spray head for nano bubble water production according to the present invention;

FIG. 9 is a schematic illustration of the insufficient expansion of nano-bubble water according to the present invention;

FIG. 10 is a schematic diagram of the excessive expansion of nanobubble water according to the present invention;

FIG. 11 is a graph of velocity simulation (unit: mach) at the time of manufacture according to an embodiment of the present invention;

FIG. 12 is a simulation graph of pressure (unit: pa) at the time of production according to an embodiment of the present invention.

In the figure: 1. a jet mixing box; 2. jet nozzle; 21. a first accelerating tube segment; 22. a first acceleration chamber; 23. a jet pipe section; 24. a spray chamber; 25. a second accelerating tube segment; 26. a second acceleration chamber; 27. a water inlet pipe; 28. an adjusting member; 29. and (5) a connection interface.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.

In order to solve the above-mentioned technical problems, as shown in fig. 2 to 8, the present invention provides a technical solution: a nano bubble water production shower nozzle for delivering gas bubble water, comprising: the accelerating tube section and the ejecting tube section 23 are sequentially communicated in a first direction parallel to the transport direction of the bubble water. Wherein the inner diameter of the accelerating tube section has a tendency to decrease in a first direction, while the inner diameter of the ejector tube section 23 in the first direction gradually increases. A connection interface 29 is formed between the accelerating tube section and the ejector tube section 23, the first direction being perpendicular to the connection interface 29.

Before understanding the nano bubble water producing showerhead of the present invention, it should be clear that the flow of bubble water in the accelerating tube segment, as shown in fig. 11 and 12, conforms to bernoulli's law. That is, when the bubble water flows in the acceleration pipe section, if the cross-sectional area of the acceleration pipe section is smaller, the bubble water flow rate at this point is larger, and the pressure thereof is smaller. Because of the present invention, the inside diameter of the accelerating tube segment has a tendency to decrease in the first direction. Thus, the velocity of the bubble water has a tendency to gradually accelerate as the accelerating tube segment flows in the first direction, while the internal pressure thereof has a tendency to decrease.

When the bubble water accelerates to a certain velocity and reaches the ejector tube section 23 through the connection interface 29, the bubble water at this time flows in accordance with the Laval's basic principle. As shown in fig. 11 and 12, when bubble water is in supersonic flow, the flow section must be gradually enlarged by accelerating and reducing pressure along the streamline; when the flow line is decelerated and diffused, the flow cross section must be gradually reduced. That is, when the bubble water reaches a certain speed through the connection interface 29, the inner diameter of the pipe section 23 gradually increases in the first direction due to the bubble water. Thus, the entering jet pipe section 23 can be further accelerated, and the pressure inside it is further reduced. Furthermore, through the structure, the bubble water can reach higher speed, so that the opposite bubble water can generate better cutting effect.

Specifically, when ordinary high-pressure high-speed spraying is adopted to produce nano bubble water with bubble particle size of 80nm to 120nm in the market, high-pressure bubble water with pressure of about 10.0MPa needs to be provided for a spray head. When the spray head for producing nano bubble water according to the first to third embodiments of the present invention is used to produce nano bubble water, the spray head is only required to be provided with high-pressure bubble water with a pressure of about 2.7MPa to 3.3MPa, so that nano bubble water with a bubble particle size of 80nm to 120nm can be produced. Therefore, under the same production condition, the nano bubble water production nozzle can effectively reduce the energy consumption required during production, thereby reducing the production cost.

In order to make the present invention clearer, a first embodiment of the present invention is presented herein. As shown in fig. 2 and 3, in the first embodiment of the present invention, the accelerating tube section includes a first accelerating tube section 21, and a first accelerating chamber 22 is formed inside the first accelerating tube section 21. From the above, it can be seen that when the bubble water enters the first acceleration chamber 22 as shown in fig. 3, it is accelerated according to bernoulli's law. Specifically, the first accelerating tube segment 21 includes: the connecting pipe and accelerating tube are communicated in sequence, the connecting pipe is used for being connected with the bubble water pipe, and the inner diameter of the accelerating tube along the first direction is gradually reduced. As can be seen from fig. 2 and 3, the inner diameter and the outer diameter of the connecting tube are uniform. Specifically, the connection pipe may be connected to the bubble water pipe by any means, for example: the pipe hoop, the pipe clamp or the threaded connection for connecting the pipelines in the market can be adopted, and the connection mode is not limited.

As shown in fig. 4 and 5, which is a second embodiment of the present invention. In contrast to the first embodiment of the invention, the accelerating tube segment further comprises: and a second accelerating tube section 25, wherein the second accelerating tube section 25 is communicated with one end of the accelerating tube far away from the first accelerating tube section 21, and the second accelerating tube section 25 is used for carrying out secondary acceleration on the bubble water. It is therefore clear that in the present invention the second accelerating tube segment 25 may be a tube with a further decrease in the inner diameter in the first direction. In other embodiments of the present invention, the second accelerating tube segment 25 has a uniform inner diameter in the first direction, and the axes of the first accelerating tube segment 21, the second accelerating tube segment 25, and the ejector tube segment 23 are coincident. Wherein the second accelerating cavities 26 formed inside the second accelerating tube segment 25 have uniform cross-sectional areas along the first direction. It should be clear that according to bernoulli's law, as the bubble water enters the second acceleration segment 25, its velocity increases further, which in turn results in a further decrease in its internal pressure, which in turn promotes a further acceleration of the bubble water. Therefore, in the second accelerating tube section 25, the bubble water can be accelerated secondarily, so that the bubble water can reach a higher speed before reaching the connection interface 29, which is beneficial to the generation of the subsequent laval effect.

Here, it is further understood that when bubble water is ejected from the ejector tube section 23, it belongs to an ideal expansion state when the pressure of the bubble water is equal to the external pressure. That is, the bubble water is ejected from the ejector tube section 23 (gravity is ignored) and then forms a straight line with high concentration. When the pressure of the bubble water is greater than the external pressure, it belongs to the under-expansion state. That is, as shown in fig. 9, since the bubble water is further expanded after being ejected from the ejector tube section 23, the bubble water is ejected in a horn shape. When the pressure of the bubble water is less than the external pressure, it belongs to the excessively expanded state. That is, as shown in fig. 10, the bubble water is discharged from the discharge pipe section 23 and then the volume thereof is reduced by the external pressure, thereby changing the flow direction of the bubble water. The gray arrows in fig. 9 and 10 each indicate the flow direction of the bubble water.

It is clear that when the above-mentioned spray head for nano bubble water production is used. A pair of opposing spray heads may be employed and both of the bubble water sprayed from the two spray heads may be in an underinflated state. Further, the two horn-shaped bubble water is more likely to be cut than the bubble water having a high bundling property. The production does not need to spend a great deal of time and energy to make the two beams of bubble water generate opposite flushing. Therefore, the production precision requirement is lower when the spray head is manufactured, and the production cost can be reduced.

Meanwhile, in some occasions with smaller bubble water yield (such as laboratory production), the single spray head can be adopted to realize the production of nano bubble water. That is, at the time of production, the bubble water in the ejection jet pipe section 23 is made to be in an excessively inflated state. That is, as shown in fig. 10, at this time, the bubble water ejected from the single nozzle can collide with itself under the action of external pressure to cut, thereby realizing the production of nano bubble water.

As described above, in the nano bubble water producing shower head of the present invention, it is necessary to control the bubble water ejecting jet pipe section 23 to be in an underinflated or overstretched state. It should be clear that the user can control the expansion state of the bubble water. As shown in fig. 3, the ejector tube section 23 includes an ejector chamber 24, and the ejector chamber 24 has an isosceles trapezoid shape in longitudinal section. The second direction is parallel to the waist of the isosceles trapezoid, and the second direction is directed from the first accelerating tube section 21 to the ejecting tube section 23, and an included angle formed between the first direction and the second direction (i.e., an angle a in fig. 3) is 15 ° or more and 22.5 ° or less. Specifically, the angle a may be any one of 15.0 °, 15.5 °, 16.0 °, 16.5 °, 17.0 °, 17.5 °, 18.0 °, 18.5 °, 19.0 °, 19.5 °, 20.0 °, 20.5 °, 21.0 °, 21.5 °, 22.0 °, and 22.5 °, or any one of the two adjacent angles.

Meanwhile, in order to further facilitate the control of the expansion state of the bubble water by the user. Based on the first and second embodiments of the present invention, the present invention also proposes a third embodiment. As shown in fig. 6 to 8, an adjusting member 28 is disposed in the first accelerating tube segment 21, an annular flow passage is formed between the adjusting member 28 and the accelerating tube, and the adjusting member 28 is used for adjusting the cross-sectional area of the annular flow passage.

Specifically, as shown in fig. 8, the regulating member 28 includes: the outer diameter of the adjusting section along the first direction is gradually reduced, and the annular flow passage is formed between the adjusting section and the accelerating tube. The adjusting section passes through a connecting interface 29 formed between the accelerating tube section (accelerating tube section, i.e. first accelerating tube section 21 in fig. 8) and the ejector tube section 23. It should be clear that the connection interface 29 is the smallest interface formed between the accelerating tube section and the ejector tube section 23. The adjusting structure is used for adjusting the relative positions of the adjusting section and the accelerating tube along the first direction. Referring to fig. 8, the adjusting section may have a conical structure or a truncated cone structure. When the adjusting section advances along the first direction, the cross-sectional area of the whole annular flow passage is reduced, and on the premise of unchanged flow, the speed of bubble water in the annular flow passage is increased. When the adjusting section retreats along the first direction, the whole cross-sectional area of the annular flow passage is increased, and on the premise of unchanged flow, the speed of bubble water in the annular flow passage is reduced. It is further advantageous for the user to adjust the cross-sectional area of the flow channel at the connection interface 29 when the adjustment section extends through the connection interface 29 to the ejection chamber 24. Thereby being more beneficial to users and adjusting the pressure, the flow rate and the expansion coefficient of the bubble water.

It should be clear that in the present invention, the function of the adjustment structure is to bring the adjustment section forward or backward in the first direction. Thus in other embodiments of the invention, the adjustment structure may be any structure capable of rectilinear motion. For example, the device can be an electric telescopic rod, an air cylinder or a hydraulic rod, and the like, and the structure drives the object to perform linear motion is conventional prior art, so that redundant description is omitted.

In the present invention, the adjustment structure includes: the connecting section and set up in the internal thread of connecting pipe inner wall. The connecting section is connected with the adjusting section, and the external screw thread has been seted up to the outer wall of connecting section, and internal screw thread and external screw thread looks adaptation. When the adjustment section is required to be controlled to advance or retreat along the first direction, the connection section is rotated. Meanwhile, in order to facilitate the rotation of the connecting section, a cross groove can be formed in one end of the connecting section away from the adjusting section or a rotating handle can be installed.

Meanwhile, in order to be able to deliver bubble water into the first acceleration chamber 22. It is also necessary to provide a water inlet pipe 27 on the first accelerating tube section 21, the water inlet pipe 27 being in communication with the first accelerating cavity 22. Meanwhile, in order to ensure the uniformity of the transported bubble water, a plurality of water inlet pipes 27 can be arranged, and the plurality of water inlet pipes 27 are uniformly distributed around the axial lead of the connecting pipe.

Based on the spray head for producing various nano bubble water, the invention also provides a device for producing the nano bubble water. The device uses at least one spray head for producing nano bubble water. And will not be described in detail herein.

Specifically, the invention also provides a device for producing the preferable nano bubble water. As shown in fig. 1, the nano bubble water production device comprises a jet mixing box 1 and at least one pair of jet nozzles 2, wherein at least one of the jet nozzles 2 is a nano bubble water production nozzle provided by the invention. In order to avoid that the ejected bubble water beam cannot be cut under the action of gravity. The two jet nozzles 2 in each pair are oppositely arranged on the jet mixing box 1 along the gravity direction.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A spray head for producing nano bubble water for delivering gas bubble water, which is characterized by comprising: an accelerating tube section and a spraying tube section (23), wherein the accelerating tube section and the spraying tube section (23) are sequentially communicated along a first direction, and the first direction is parallel to the conveying direction of the bubble water;

the inner diameter of the accelerating tube section has a decreasing trend along a first direction;

the inner diameter of the ejector tube section (23) in the first direction gradually increases.

2. The showerhead for nano-bubble water production according to claim 1, wherein the accelerating tube section comprises a first accelerating tube section (21), the first accelerating tube section (21) comprising: the connecting pipe and accelerating tube that communicate in proper order, the connecting pipe is used for being connected with bubble water pipe, accelerating tube reduces along the internal diameter of first direction gradually.

3. The nano-bubble water producing showerhead of claim 2, wherein the accelerating tube section further comprises: and the second accelerating tube section (25) is communicated with one end of the accelerating tube far away from the first accelerating tube section (21), and the second accelerating tube section (25) is used for carrying out secondary acceleration on the bubble water.

4. A nano-bubble water producing showerhead according to claim 3, wherein the second accelerating tube section (25) has a uniform inner diameter in the first direction, and the axes of the first accelerating tube section (21), the second accelerating tube section (25) and the ejecting tube section (23) are coincident.

5. Spray head for production of nano-bubble water according to any of the claims 2, characterized in that the spray tube section (23) comprises a spray cavity (24), the spray cavity (24) has a longitudinal section of isosceles trapezoid, the second direction is parallel to the waist of the isosceles trapezoid, and the second direction is directed towards the spray tube section (23) by the first accelerating tube section (21), the angle formed between the first direction and the second direction is 15 ° or more and 22.5 ° or less.

6. The spray head for nano bubble water production according to any one of claims 2 to 5, wherein an adjusting member (28) is provided in the first accelerating tube section (21), an annular flow passage is formed between the adjusting member (28) and the accelerating tube, and the adjusting member (28) is used for adjusting the cross-sectional area of the annular flow passage.

7. The nano-bubble water producing showerhead according to claim 6, wherein the regulating member (28) comprises:

a regulating section having an outer diameter gradually decreasing in a first direction, the annular flow passage being formed between the regulating section and the accelerating tube, the regulating section passing through a connection interface (29) formed between the accelerating tube section and the ejector tube section (23), the first direction being perpendicular to the connection interface (29);

and the adjusting structure is used for adjusting the relative positions of the adjusting section and the accelerating tube along the first direction.

8. The nano-bubble water producing showerhead of claim 7, wherein the adjusting structure comprises:

the connecting section is connected with the adjusting section, and external threads are formed on the outer wall of the connecting section;

the internal thread is arranged on the inner wall of the connecting pipe and is matched with the external thread.

9. A nanobubble water producing apparatus, wherein at least one nanobubble water producing shower head according to any one of claims 1 to 8 is used.

10. The nano-bubble water production device according to claim 9, comprising a jet mixing box (1) and at least one pair of nano-bubble water production spray heads, wherein two nano-bubble water production spray heads in each pair are oppositely arranged on the jet mixing box (1) along the gravity direction.