Atomizing nozzle

Abstract

The utility model discloses an atomizing nozzle, which uses compressed air to introduce the liquid to be sprayed in the liquid storage device and spray it out after atomization. The nozzle includes a nozzle body and a diverter needle. The nozzle is provided with an air flow channel, a mixing chamber, an acceleration chamber and a spray port connected in sequence. A liquid flow channel is provided in the side wall of the nozzle body, one end of the liquid flow channel is connected to the mixing chamber, and the other end is connected to the liquid storage device. The diverter needle is provided in the mixing chamber; the inner wall of the mixing chamber is provided with multiple groups of spiral grooves along its axial direction, and the outer peripheral wall of the diverter needle is provided with multiple groups of spiral diverter grooves along the axial direction. The mixing chamber is parallel to the diverter needle axially, and there is a predetermined distance between the outer peripheral wall of the diverter needle and the inner wall of the mixing chamber. Compressed air enters the mixing chamber through the air flow channel tube, and the liquid to be sprayed enters the mixing chamber through the liquid flow channel and is mixed under the action of the diverter groove and the groove, and finally passes through the acceleration chamber and is sprayed out from the spray port. According to the atomizing nozzle disclosed in the present invention, a mist liquid with a high degree of atomization and a large coverage range is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of atomizing nozzles, and more specifically, to an atomizing nozzle. Background Art

[0002] A spray atomizer nozzle is a common coating tool used to evenly apply liquid to surfaces. This technology is widely used in many industries, including automotive, aviation, construction, and electronics. Existing spray nozzles often suffer from excessive water flow and limited coverage, which wastes raw materials and prevents even application of liquid.

[0003] Therefore, it is urgent to improve the spray atomizing nozzle to solve the above-mentioned problems. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for an atomizing nozzle.

[0005] According to a first aspect of the present invention, an atomizing nozzle is provided, which uses compressed air to introduce liquid to be sprayed from a liquid storage device and atomizes it before spraying it out, comprising a nozzle body and a diverter needle. An air flow channel, a mixing chamber, an acceleration chamber, and an injection port are axially arranged in sequence within the nozzle body. A liquid flow channel is also arranged within the side wall of the nozzle body. One end of the liquid flow channel is connected to the mixing chamber and the other end is connected to the liquid storage device. The diverter needle is arranged in the mixing chamber.

[0006] The inner wall of the mixing chamber is provided with multiple groups of spiral grooves along its axial direction, and the outer peripheral wall of the diverter needle is provided with multiple groups of spiral diverter grooves along the axial direction. The mixing chamber is parallel to the axial direction of the diverter needle, and there is a predetermined distance between the outer peripheral wall of the diverter needle and the inner wall of the mixing chamber.

[0007] The compressed air enters the mixing chamber through the air flow tube, and the liquid to be sprayed enters the mixing chamber through the liquid flow channel and is mixed under the action of the diverter groove and the groove, and finally passes through the acceleration chamber and is sprayed out from the injection port.

[0008] Optionally, the axes of the air flow channel, the mixing chamber, the acceleration chamber and the injection port coincide with each other.

[0009] Optionally, the spiral direction of the groove is the same as the spiral direction of the diverter groove.

[0010] Optionally, the inner circumferential wall of the mixing chamber is in a spindle-shaped structure with pointed ends and a bulge in the middle along the axial direction, and the spindle-shaped structure is composed of conical structures at both ends and a straight cylindrical structure between the two conical structures.

[0011] Optionally, the groove has an inclination angle of 18°-22° relative to the axis of the mixing chamber; the diverter groove has an inclination angle of 18°-22° relative to the axis of the diverter needle.

[0012] Optionally, the inner diameter of the acceleration chamber is larger than the inner diameter of the air flow channel.

[0013] Optionally, the injection port is configured in a conical shape, and an inner diameter of the injection port gradually increases along the liquid injection direction.

[0014] Optionally, the shunt needle has a first cone and a second cone that are coaxially arranged, and the bottom surface of the first cone and the bottom surface of the second cone have the same shape and size and are relatively connected.

[0015] Optionally, the first cone has a first height, the second cone has a second height different from the first height, and the smaller one of the first height and the second height is located on one side of the air flow channel.

[0016] Optionally, the inner wall of the mixing chamber and the outer wall of the diverter needle are connected by at least two connecting strips, and the connecting strips are arranged at intervals along the circumferential direction of the diverter needle.

[0017] The atomizing nozzle disclosed herein has the following beneficial effects:

[0018] The diverter needle disperses the compressed air entering the mixing chamber through the air flow channel 360°. The spiral groove causes the high-speed, high-pressure gas formed by the dispersion of the compressed air to rotate rapidly, thereby generating a negative pressure in the mixing chamber, causing the stored liquid to be sprayed to enter the mixing chamber through the liquid flow channel. After the high-speed, high-pressure gas is guided by the spiral groove, it continues to be guided by the spiral diverter groove, thereby driving the liquid to be sprayed into the mixing chamber at a high speed and rapidly stirred to atomize, so that it passes through the acceleration chamber and is sprayed out from the injection port, forming a mist liquid with a high degree of atomization and a large coverage area.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0021] Figure 1 A schematic structural diagram of an atomizing nozzle according to a preferred embodiment of the present invention;

[0022] Figure 2 The preferred embodiment provided for this utility model is Figure 1Schematic diagram of the structure in the AA direction.

[0023] The following are marked in the figure:

[0024] 10-nozzle body; 11-air flow channel; 12-mixing chamber; 13-acceleration chamber; 14-injection port; 15-liquid flow channel; 16-groove; 17-conical structure; 18-straight cylinder structure;

[0025] 20-shunt needle; 21-shunt slot; 22-first cone; 23-second cone;

[0026] 30-Connecting strip. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] According to an atomizing nozzle disclosed in the present invention, compressed air is used to introduce the liquid to be sprayed in the liquid storage device and atomize it before spraying it out. Figure 1 and Figure 2 As shown, it includes a nozzle body 10 and a diverter needle 20. The interior of the nozzle body 10 is axially provided with an air flow channel 11, a mixing chamber 12, an acceleration chamber 13 and an injection port 14 that are connected in sequence. A liquid flow channel 15 is also provided in the side wall of the nozzle body 10. One end of the liquid flow channel 15 is connected to the mixing chamber 12 and the other end is connected to the liquid storage device. The diverter needle 20 is provided in the mixing chamber 12.

[0032] The inner wall of the mixing chamber 12 is provided with multiple groups of spiral grooves 16 along its axial direction, and the outer peripheral wall of the diverter needle 20 is provided with multiple groups of spiral diverter grooves 21 along the axial direction. The mixing chamber 12 is axially parallel to the diverter needle 20, and there is a predetermined distance between the outer peripheral wall of the diverter needle 20 and the inner wall of the mixing chamber 12.

[0033] The compressed air enters the mixing chamber 12 through the air flow channel 11, and the liquid to be sprayed enters the mixing chamber 12 through the liquid flow channel 15 and is mixed under the action of the diverter groove 21 and the groove 16, and finally passes through the acceleration chamber 13 and is sprayed out from the injection port 14.

[0034] The diverter needle 20 disperses the compressed air entering the mixing chamber 12 through the air flow channel 11 360°. The spiral groove 16 causes the high-speed, high-pressure gas formed by the dispersion of the compressed air to rotate rapidly, thereby generating a negative pressure in the mixing chamber 12 so that the stored liquid to be sprayed enters the mixing chamber 12 through the liquid flow channel 15. After the high-speed, high-pressure gas is guided by the spiral groove 16, it continues to be guided by the spiral diverter groove 21, thereby driving the liquid to be sprayed entering the mixing chamber 12 to rotate at high speed and quickly stir and atomize, so that it passes through the acceleration chamber 13 and is ejected from the injection port 14, forming a mist liquid with a high degree of atomization and a large coverage area.

[0035] According to an embodiment of the atomizing nozzle disclosed herein, the axes of the air flow channel 11 , the mixing chamber 12 , the acceleration chamber 13 and the injection port 14 coincide with each other.

[0036] The coincidence of the four axes can enable the liquid to be sprayed to form a circular spray area after being atomized by the nozzle and sprayed with the nozzle axis as the center.

[0037] According to one embodiment of the atomizing nozzle disclosed herein, the spiral direction of the groove 16 is the same as the spiral direction of the diverter groove 21. This doubles the acceleration of the compressed air flowing through the mixing chamber 12 and the liquid to be sprayed, so that the liquid to be sprayed is highly atomized.

[0038] According to one embodiment of the atomizing nozzle disclosed herein, the inner circumferential wall of the mixing chamber 12 is a spindle-shaped structure with pointed ends and a bulge in the middle along the axial direction. The spindle-shaped structure is composed of conical structures 17 located at both ends and a straight cylindrical structure 18 located between the two conical structures 17. Thus, the mixing chamber 12 includes a first cavity, a second cavity and a third cavity which are connected in sequence, the first cavity is connected to the air flow channel 11, the third cavity is connected to the acceleration chamber 13, and the output end of the liquid flow is located in the second cavity; the compressed air is in a straight flow state in the air flow channel 11, the cross-section of the first cavity rapidly increases, the air pressure of the compressed air drops rapidly, and through the action of the diverter needle 20 and the spiral groove 16, the compressed air flow path begins to rotate preliminarily, and the cross-section of the second cavity is further increased. Since the air flow velocity in the first cavity cannot drop immediately when it reaches the second cavity, and the cross-section of the second cavity is larger than the cross-section of the first cavity, a negative pressure will be generated in the second cavity under the Bernoulli effect, and the liquid to be sprayed will be sucked into the second cavity through the liquid flow channel 15. The high-speed rotating gas will quickly stir the liquid and atomize it quickly. The cross-section of the third cavity is smaller than that of the second cavity, so that the rapidly stirred gas-liquid mixture can be gathered. The pressure of the gas-liquid mixture is increased relative to that of the second cavity to accelerate the gas-liquid mixture, causing the gas-liquid mixture to rotate and accelerate again, and after being accelerated again by the acceleration chamber 13, it flows through the injection port 14 and is ejected in an umbrella shape at high speed.

[0039] According to one embodiment of the atomizing nozzle disclosed herein, the groove 16 is inclined at an angle of 18°-22° relative to the axis of the mixing chamber 12; the diverter groove 21 is inclined at an angle of 18°-22° relative to the axis of the diverter needle 20. The groove 16 has an inclination angle of 18°-22°, which allows the compressed gas that has been dispersed into the mixing chamber 12 to rotate rapidly. The diverter groove 21 has an inclination angle of 18°-22°, which allows the gas guided through the groove 16 to continue to be guided through the diverter groove 21, thereby driving the liquid to be sprayed into the mixing chamber 12 to rotate at high speed and quickly stir and atomize.

[0040] According to one embodiment of the atomizing nozzle disclosed herein, the inner diameter of the acceleration chamber 13 is larger than the inner diameter of the air flow channel 11. The inner diameter of the acceleration chamber 13 is larger than the inner diameter of the air flow channel 11, and the gas-liquid mixture formed in the mixing chamber 12 flows out quickly through the acceleration chamber 13, ensuring that the gas-liquid mixture rotates at high speed without slowing down, thereby not affecting the atomization quality of the liquid to be sprayed.

[0041] According to one embodiment of the atomizing nozzle disclosed herein, the nozzle opening 14 is configured in a conical shape, and the inner diameter of the nozzle opening 14 gradually increases along the liquid spraying direction, thereby increasing the coverage of the atomized liquid to be sprayed through the nozzle.

[0042] According to one embodiment of the atomizing nozzle disclosed herein, the diverter needle 20 has a first cone 22 and a second cone 23 coaxially arranged, and the bottom surface of the first cone 22 and the bottom surface of the second cone 23 have the same shape and size and are relatively connected.

[0043] During specific implementation, the first cone 22 is close to one side of the air flow channel 11, and the second cone 23 is close to one side of the acceleration chamber 13. The first cone 22 disperses the compressed air entering the air flow channel 11 360°, and the inclination angle of the second cone 23 relative to the axis of the nozzle becomes smaller. The cross-section of the mixing chamber 12 between the second cone 23 and the inner wall of the mixing chamber 12 increases rapidly and a negative pressure is generated here, and the liquid to be sprayed is sucked into the mixing chamber 12 through the liquid circulation. The high-speed rotating gas will quickly stir the liquid and atomize it quickly.

[0044] Specifically, the first cone 22 has a first height, the second cone 23 has a second height different from the first height, and the smaller one of the first height and the second height is located at one side of the air flow channel 11 .

[0045] In the mixing chamber occupied by the larger one of the first height and the second height, the predetermined distance between the inner wall of the mixing chamber 12 and the outer wall of the diverter needle 20 is large, so a negative pressure is formed in the mixing chamber 12 here, and the liquid to be sprayed is sucked into the mixing chamber 12 through the liquid flow channel 15. The high-speed rotating gas will quickly stir the liquid and atomize it quickly.

[0046] According to one embodiment of the atomizing nozzle of the present disclosure, the inner wall of the mixing chamber 12 and the outer wall of the diverter needle 20 are connected by at least two connecting strips 30, and the connecting strips 30 are arranged at intervals along the circumference of the diverter needle 20. The inner wall of the mixing chamber 12 and the diverter needle 20 are connected by the two connecting strips 30 to form an integral component.

[0047] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An atomizing nozzle, which uses compressed air to introduce the liquid to be sprayed in the liquid storage device and spray it after atomization, characterized in that: The nozzle body comprises a nozzle body and a diverter needle, wherein an air flow channel, a mixing chamber, an acceleration chamber and an injection port are sequentially connected and arranged in an axial direction inside the nozzle body, a liquid flow channel is also arranged inside the side wall of the nozzle body, one end of the liquid flow channel is connected to the mixing chamber, and the other end is connected to the liquid storage device, and the diverter needle is arranged in the mixing chamber; The inner wall of the mixing chamber is provided with a plurality of groups of spiral grooves along the axial direction thereof, the outer peripheral wall of the shunt needle is provided with a plurality of groups of spiral shunt grooves along the axial direction thereof, the mixing chamber is axially parallel to the shunt needle, and there is a predetermined distance between the outer peripheral wall of the shunt needle and the inner wall of the mixing chamber; The compressed air enters the mixing chamber through the air flow channel, and the liquid to be sprayed enters the mixing chamber through the liquid flow channel and is mixed under the action of the diverter groove and the groove, and finally passes through the acceleration chamber and is sprayed out from the injection port.

2. The atomizing nozzle according to claim 1, characterized in that: The axes of the air flow channel, the mixing chamber, the acceleration chamber and the injection port coincide with each other.

3. The atomizing nozzle according to claim 1, characterized in that: The spiral direction of the groove is the same as the spiral direction of the diverter groove.

4. The atomizing nozzle according to claim 1, characterized in that: The inner peripheral wall of the mixing chamber is in a shuttle-shaped structure with pointed ends and a bulged middle in the axial direction. The shuttle-shaped structure is composed of conical structures at both ends and a straight tube structure between the two conical structures.

5. The atomizing nozzle according to claim 1, characterized in that: The groove has an inclination angle of 18°-22° relative to the axis of the mixing chamber; the diverter groove has an inclination angle of 18°-22° relative to the axis of the diverter needle.

6. The atomizing nozzle according to claim 1, characterized in that: The inner diameter of the acceleration chamber is greater than the inner diameter of the air flow channel.

7. The atomizing nozzle according to claim 1, characterized in that: The injection port is configured in a conical shape, and an inner diameter of the injection port gradually increases along the liquid injection direction.

8. The atomizing nozzle according to claim 1, characterized in that: The shunt needle comprises a first cone and a second cone which are coaxially arranged. The bottom surface of the first cone and the bottom surface of the second cone have the same shape and size and are relatively connected.

9. The atomizing nozzle according to claim 8, characterized in that: The first cone has a first height, the second cone has a second height different from the first height, and the smaller one of the first height and the second height is located at one side of the air flow channel.

10. The atomizing nozzle according to claim 1, characterized in that: The inner wall of the mixing chamber and the outer wall of the diverter needle are connected by at least two connecting strips, and the connecting strips are arranged at intervals along the circumferential direction of the diverter needle.

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