Ultrasonic spray head structure for inner cavity of pipeline

Abstract

The utility model provides an ultrasonic spray head structure for an inner cavity of a pipeline. The ultrasonic spray head structure comprises an ultrasonic transducer, a first pipeline system for spraying liquid and a second pipeline system for draining gas, the ultrasonic transducer comprises an ultrasonic body and a transmitting end connected with the ultrasonic body; the output port of the first pipeline system is positioned on the working surface of the transmitting end; the second pipeline system comprises a gas channel, an output port of the gas channel surrounds the periphery of the working face of the transmitting end, and drainage gas in the gas channel can rotate in the working process. The working face of the transmitting end atomizes spraying liquid flowing through the working face to generate micron-sized fine mist particles, meanwhile, the mist particles can be sprayed out finer and more evenly under the effect that the gas channel can output rotary drainage gas, the utilization rate of the spraying liquid is high, and the spraying precision is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of spraying, and in particular to an ultrasonic nozzle structure for use in the inner cavity of a pipe. Background Technology

[0002] Pipe inner wall spraying technology mainly refers to the uniform application of one or more layers of coatings with anti-corrosion, wear-resistant, and high-temperature-resistant properties to the inner wall of pipes or other confined spaces using specific spraying equipment and methods. This technology not only protects the inner wall of the pipe from corrosion and wear damage, but also improves the service life and transportation efficiency of the pipeline. With the development of nanomaterials technology, the application of nanofunctional coatings has become increasingly widespread, and they are now widely used in pipe inner wall spraying. At the same time, the industrialization demand for the preparation of nanoscale thin films and functional coatings is also increasing.

[0003] Traditional coating preparation methods for large-area continuous production include roll coating, dip coating, blade coating, two-fluid spraying, screen printing, etc. However, coatings prepared by traditional coating processes such as roll coating, dip coating, and blade coating are generally thick, making it difficult to achieve uniform nanoscale coatings.

[0004] Two-fluid spraying, based on the high kinetic energy generated by high-pressure gas and liquid, results in significant paint waste. Screen printing, on the other hand, allows for the formation of very thick coatings due to the large amount of liquid paint remaining on the screen. Furthermore, the uneven atomization of two-fluid spraying particles and the uncontrollable spray flow rate, combined with the precision limitations of roller coating, dip coating, doctor blade coating, and screen printing, all contribute to poor coating uniformity, making it difficult to achieve the desired functionality of nano-coatings.

[0005] Currently, with the development of technology, ultrasonic transducers are increasingly being used in the field of pipeline spraying. However, how to improve the spraying volume and uniformity of ultrasonic transducers on pipe walls is an urgent problem to be solved. In other words, how to achieve precision spraying on the surface of the pipe wall. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an ultrasonic nozzle structure for the inner cavity of a pipe, so as to solve the technical problems existing in the prior art.

[0007] To achieve the above and other related objectives, this utility model provides an ultrasonic nozzle structure for the inner cavity of a pipe, including an ultrasonic transducer, a first pipeline system for supplying spraying liquid, and a second pipeline system for supplying drainage gas; the ultrasonic transducer includes an ultrasonic body and a transmitting end connected to the ultrasonic body;

[0008] The output port of the first pipeline system is located on the working surface of the transmitting end;

[0009] The second pipeline system includes a gas channel, the outlet of which surrounds the working surface of the launch end, and the guiding gas in the gas channel can rotate during operation.

[0010] Furthermore, the first piping system shown includes a liquid supply device and a liquid pipeline, the inlet of which is connected to the liquid supply device; the liquid pipeline is located inside the ultrasonic transducer.

[0011] Furthermore, the centerline of the liquid pipeline is collinear with the centerline of the ultrasonic transducer along its length.

[0012] Furthermore, it also includes a housing; at least the transmitting end of the ultrasonic transducer is housed within the housing; the inner wall of the housing and the outer wall of the portion of the ultrasonic transducer housed within the housing form the gas channel.

[0013] Furthermore, the outlet of the gas channel may be coplanar with or not coplanar with the working surface of the transmitter; when not coplanar, the outlet of the gas channel is located behind the working surface of the transmitter according to the gas flow direction.

[0014] Furthermore, it also includes a housing with an opening; the end of the housing away from the gas passage is sealed to the opening.

[0015] Furthermore, the inner wall of the cover forms a sealed air chamber on the outer wall of the ultrasonic transducer exposed outside the housing; the air chamber is connected to the gas channel through at least one air supply pipe; the air chamber is connected to an air source through an air inlet connector installed on the cover.

[0016] Furthermore, the gas supply pipe is tangent to the inner cavity of the gas channel; the angle between the centerline of the gas supply pipe and the centerline of the gas channel is 0 to 60°.

[0017] Furthermore, the angle between the centerline of the gas supply pipe and the centerline of the output port of the first pipeline system is 0° to 60°.

[0018] Furthermore, the tail end of the ultrasonic transducer is installed at the bottom of the cover; the power connector of the ultrasonic transducer is also installed on the bottom of the cover.

[0019] As described above, the ultrasonic nozzle structure for the inner cavity of a pipe according to this utility model has the following beneficial effects:

[0020] Because the output port of the first pipeline system for supplying spraying liquid is located on the working surface of the launching end, continuously supplying spraying liquid to the working surface; and the output port of the gas channel of the second pipeline system for supplying guiding gas surrounds the working surface of the launching end, and the guiding gas in the gas channel can rotate during operation. During operation, the working surface of the launching end atomizes the spraying liquid flowing through the working surface, producing micron-sized fine mist particles. At the same time, the gas channel can supply guiding gas at an appropriate pressure to the working surface, and this guiding gas is rotating guiding gas. Under the action of the rotating guiding gas, the mist particles are made more uniform and smaller. At the same time, the guiding gas drives the mist particles and guides the direction of the mist particles, so as to achieve uniform spraying of mist particles, making the spraying very uniform, the spraying flow rate controllable, the spraying liquid utilization rate high, and greatly improving the spraying precision. Attached Figure Description

[0021] Figure 1 The diagram shown is a schematic representation of one embodiment of an ultrasonic nozzle structure for use in the inner cavity of a pipe according to the present invention.

[0022] Figure 2 This diagram shows another embodiment of the ultrasonic nozzle structure for the inner cavity of a pipe according to the present invention.

[0023] Figure 3 The diagram shows the assembly of the ultrasonic transducer and rotary generator device of this utility model.

[0024] Figure 4 Displayed as Figure 3 A bottom view;

[0025] Figure 5 Displayed as along Figure 4 Cross-sectional view of AA. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0027] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0028] like Figure 1 As shown, this utility model provides an ultrasonic nozzle structure for the inner cavity of a pipe, including an ultrasonic transducer 7, a first pipeline system for supplying spraying liquid, and a second pipeline system for supplying drainage gas; the ultrasonic transducer 7 includes an ultrasonic body and a transmitting end 10 connected to the ultrasonic body; the ultrasonic body includes piezoelectric feature components. The ultrasonic body and the transmitting end 10 connected to the ultrasonic body can be designed as an integrated unit.

[0029] The output port of the first pipeline system is located on the working surface 5 of the transmitter 10. In other words, the first pipeline system can continuously deliver the spray liquid to the working surface 5 of the transmitter 10 to achieve capillary atomization. Preferably, the center line of the output port is collinear with the center line of the working surface 5, which greatly improves the atomization effect.

[0030] Figure 1 The middle arrow indicates the flow direction of the guiding gas. The second pipeline system includes a gas channel 41, the outlet of which surrounds the working surface 5 of the transmitter 10. The guiding gas within the gas channel 41 can rotate, and the rotating guiding gas has a certain pressure and moves in a set direction. Specifically, the working surface 5 is located at the center of the outlet.

[0031] refer to Figure 1During operation, the ultrasonic nozzle structure extends into the pipe 9. The working surface 5 of the transmitting end 10 atomizes the spray liquid flowing through it, producing micron-sized fine mist particles. Simultaneously, the gas channel 41 supplies the working surface 5 with a suitable pressure of guiding gas, which is a rotating guiding gas. Under the action of the rotating guiding gas, the mist particles become more uniform and smaller. The guiding gas also drives the mist particles and guides their direction of movement, achieving uniform spraying of the mist particles onto the inner wall of the pipe. This results in highly uniform spraying, controllable spray flow, high utilization of the spray liquid, and significantly improved spraying precision. The spray solution in the first pipeline system is atomized at the atomizing end and then flows with the incoming gas to form a rotating airflow.

[0032] In this application, references Figure 1 The first piping system shown includes a liquid supply device (not shown) and a liquid pipeline 8. The inlet of the liquid pipeline 8 is connected to the liquid supply device, which continuously supplies spraying liquid at a set pressure into the liquid pipeline 8. The liquid pipeline 8 is located inside the ultrasonic transducer 7. Preferably, the centerline of the liquid pipeline 8 is collinear with the centerline of the ultrasonic transducer 7 along its length. This ensures that the spraying liquid can be continuously delivered to the center of the working surface 5 of the transmitting end 10, allowing the spraying liquid to be fully atomized.

[0033] In this application, the present invention also includes a housing 4; the transmitting end 10 of the ultrasonic transducer 7 is housed within the housing 4, specifically, at least the transmitting end 10 is housed within the housing 4; the inner wall of the housing 4 and the outer wall of the portion of the ultrasonic transducer 7 housed within the housing 4 form the gas channel 41; the gas channel 41 is annular, and when the guiding gas enters the annular gas channel 4, it will rotate, forming rotating guiding gas. This rotating guiding gas drives the mist particles and guides their direction of movement, resulting in good atomization and high spraying accuracy. Figures 1 to 4 .

[0034] In this application, the outlet of the gas channel 41 and the working surface 5 of the transmitter 10 may be coplanar or non-coplanar; preferably, the outlet of the gas channel 41 and the working surface 5 of the transmitter 10 are not on the same plane, i.e., non-coplanar, see [link to application]. Figure 1 and Figure 2 When the two are not coplanar, the outlet of the gas channel 41 is located behind the working surface 5 of the transmitter 10, according to the gas flow direction. Specifically, the guiding gas is first output from the outlet of the gas channel 41 and then flows to the working surface 5 of the transmitter 10.

[0035] Further, refer to Figure 1 and Figure 2The present invention also includes a cover 3 having an opening; specifically, the cover 3 has a closed end and an opening disposed opposite to each other, and the end of the housing 4 away from the outlet of the gas passage 41 is sealed and connected to the opening.

[0036] refer to Figure 1 The inner wall of the cover 3 forms a sealed air chamber 42 on the outer wall of the ultrasonic transducer 7 exposed outside the housing 4; an air inlet connector 6 is installed at the closed end of the cover 3, the inlet of the air chamber 42 is connected to the air inlet connector 6, and the air inlet connector 6 is connected to an air source.

[0037] refer to Figure 2 An air inlet connector 6 is installed on the side wall of the cover 3, and the inlet of the air chamber 42 is connected to the air inlet connector 6. The air inlet connector 6 is connected to an air source.

[0038] This invention does not impose specific restrictions on the installation position of the air inlet connector 6, as long as the air source can supply air to the air chamber 42 through the air inlet connector 6.

[0039] refer to Figures 3 to 5 The gas chamber 42 is connected to the gas channel 41 via a gas supply pipe 43; specifically, the gas chamber 42 and the gas channel 41 are connected via one or more gas supply pipes 43. The number of gas supply pipes 43 can be two, three, four, etc. Preferably, when the gas chamber 42 and the gas channel 41 are connected via multiple gas supply pipes 43, the outlets of the multiple gas supply pipes 43 are evenly arranged around the gas channel 41. The gas source supplies diversion gas to the gas chamber 42, the gas chamber 42 can store a certain amount of diversion gas, the diversion gas can enter the gas channel 41 through the gas supply pipe 43, and finally the gas channel 41 outputs diversion gas, which ultimately flows to the working surface 5 of the transmitter 10.

[0040] Preferably, the air chamber 42 is connected to the gas channel 41 via four air supply pipes 43; more preferably, the four air supply pipes 43 are evenly distributed on the same circumference. The guiding gas has a certain pressure, and it is relatively easy to generate rotational motion when it enters the gas channel 41 through the four air supply pipes 43, that is, to form rotating guiding gas. This rotating guiding gas drives the mist particles and guides the direction of the mist particles, thereby achieving good atomization effect and high spraying accuracy.

[0041] The tail of the ultrasonic transducer 7 is mounted on the bottom of the cover 3; the cover 3 serves to fix the ultrasonic transducer 7, and also to prevent dust and protect the ultrasonic transducer 7. (See...) Figure 1 and Figure 2 .

[0042] The power connector 2 of the ultrasonic transducer 7 is mounted on the outer wall of the bottom of the cover. Preferably, the power connector 2 is an aviation plug for ease of use, see [link to relevant documentation]. Figure 1 and Figure 2 .

[0043] Preferably, refer to Figure 4 and Figure 5 The gas supply pipe 43 is tangent to the inner cavity of the gas channel 41, and the angle between the centerline of the gas supply pipe 43 and the centerline of the gas channel 41 is 0 to 60°. This ensures that the drainage gas flows into the gas channel 41 very smoothly, so that the pressure, rotation speed and other properties of the drainage gas entering the gas channel 41 are relatively stable.

[0044] Preferably, the angle between the centerline of the gas supply pipe 43 and the centerline of the output port of the first pipeline system is 0 to 60°.

[0045] In this application, the frequency range of the ultrasonic transducer 7 is 20 to 200 kHz.

[0046] In summary, the ultrasonic nozzle structure for the inner cavity of a pipe according to this invention, during operation, allows the working surface 5 of the transmitting end 10 to atomize the spray liquid flowing through it, producing micron-sized fine mist particles. Simultaneously, the gas channel 41 supplies the working surface 5 with a suitable pressure of guiding gas, which is a rotating guiding gas. Under the action of the rotating guiding gas, the mist particles become more uniform and smaller. The guiding gas also drives the mist particles and guides their direction of movement, achieving uniform spraying of the mist particles. This results in high coating uniformity, high material utilization, and precise control of spray flow and coating thickness, greatly improving the precision of the spraying process. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0047] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An ultrasonic nozzle structure for use in the inner cavity of a pipe, characterized in that, It includes an ultrasonic transducer, a first pipeline system for supplying spraying liquid, and a second pipeline system for supplying drainage gas; the ultrasonic transducer includes an ultrasonic body and a transmitting end connected to the ultrasonic body. The output port of the first pipeline system is located on the working surface of the transmitting end; The second pipeline system includes a gas channel, the outlet of which surrounds the working surface of the launch end, and the guiding gas in the gas channel can rotate during operation.

2. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 1, characterized in that: The first piping system shown includes a liquid supply device and a liquid pipeline, the inlet of which is connected to the liquid supply device; the liquid pipeline is located inside the ultrasonic transducer.

3. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 2, characterized in that: The centerline of the liquid pipeline is collinear with the centerline of the ultrasonic transducer along its length.

4. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 1, characterized in that: It also includes a housing; at least the transmitting end of the ultrasonic transducer is housed within the housing; the inner wall of the housing and the outer wall of the portion of the ultrasonic transducer housed within the housing form the gas channel.

5. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 1, characterized in that: The outlet of the gas channel may be coplanar with or not coplanar with the working surface of the transmitter; when not coplanar, the outlet of the gas channel is located behind the working surface of the transmitter according to the gas flow direction.

6. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 4, characterized in that: It also includes a housing with an opening; the end of the housing away from the gas passage is sealed to the opening.

7. The ultrasonic nozzle structure for a pipe cavity according to claim 6, characterized in that: The inner wall of the enclosure forms a sealed air chamber on the outer wall of the ultrasonic transducer exposed outside the housing; the air chamber is connected to the gas channel through at least one air supply pipe; the air chamber is connected to a gas source through an air inlet connector installed on the enclosure.

8. The ultrasonic nozzle structure for the inner cavity of a pipe according to claim 7, characterized in that: The gas supply pipe is tangent to the inner cavity of the gas channel; the angle between the centerline of the gas supply pipe and the centerline of the gas channel is 0 to 60°.

9. The ultrasonic nozzle structure for a pipe cavity according to claim 7, characterized in that: The angle between the centerline of the gas supply pipe and the centerline of the output port of the first pipeline system is 0 to 60°.

10. An ultrasonic nozzle structure for a pipe cavity according to claim 6, characterized in that: The tail of the ultrasonic transducer is installed at the bottom of the cover; the power connector of the ultrasonic transducer is also installed on the bottom of the cover.

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