Miniature flow-adjustable double-fluid atomizing nozzle

Abstract

The utility model discloses a miniature flow-adjustable double-fluid atomizing nozzle which comprises a main body, an air inlet mechanism, a liquid inlet mechanism and a spraying mechanism, the air inlet mechanism comprises an air cylinder nut, and the air cylinder nut is in threaded connection with the main body; the gas flow channel of the cylinder nut is communicated with the gas channel in the main body; the liquid inlet mechanism comprises a liquid connector pipe, a liquid valve and a valve opening mechanism. A first liquid flow channel is arranged in the liquid connector pipe; a second liquid flow channel is arranged in the liquid valve; the liquid valve is installed in the air cylinder nut through the elastic assembly. The elastic force of the elastic assembly enables the second liquid flow channel of the liquid valve to be disconnected from the liquid channel of the main body; the spraying mechanism comprises an air cap, a liquid cap and a screw cap; the inlet of the liquid cap is communicated with the outlet of the liquid channel; the air cap is communicated with the outlet of the gas channel and the outlet of the liquid cap; the nut is installed on the main body and provided with a nozzle or a spraying assembly. According to the double-fluid atomizing nozzle, the spraying amount can be accurately adjusted, the structure is simpler, the adjusting steps are simpler and faster, and the manufacturing cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of atomizing nozzles, in particular to a micro dual-fluid atomizing nozzle with adjustable flow rate. Background Art

[0002] Atomizing nozzles are the core components of spray equipment and are widely used in industries such as industry, machinery, electronics, demoulding, printing, plastics, food, textiles, medicine, cosmetics, glass, rubber, etc. Although the current atomizing nozzles can adjust the spray volume, their adjustment structure is complex, the manufacturing cost is high, the adjustment steps are more complicated, and the adjustment accuracy is not high.

[0003] Therefore, in order to solve the above problems, it is necessary to design an atomizing nozzle with a simpler structure, simpler and more direct adjustment steps, higher adjustment accuracy and lower manufacturing cost. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, the utility model provides a miniature dual-fluid atomizing nozzle with adjustable flow rate, which can achieve precise adjustment of the spray volume, has not only a simpler structure, but also simpler and faster adjustment steps, and lower manufacturing cost.

[0005] The technical solution of the utility model to solve the above technical problems is:

[0006] A micro dual-fluid atomizing nozzle with adjustable flow rate comprises a main body, an air inlet mechanism, a liquid inlet mechanism and a spray mechanism arranged in the main body, wherein:

[0007] The air intake mechanism comprises a cylinder nut, which is mounted on the main body and is connected to the main body via a thread; a gas flow passage of the cylinder nut is connected to a gas channel in the main body;

[0008] The liquid inlet mechanism comprises a liquid interface pipe, a liquid valve and a valve opening mechanism for driving the liquid valve to move, wherein a first liquid flow channel is arranged in the liquid interface pipe; a second liquid flow channel is arranged in the liquid valve; the liquid valve is installed in the cylinder nut through an elastic component; the elastic force of the elastic component causes the second liquid flow channel of the liquid valve to be disconnected from the liquid channel of the main body; the valve opening mechanism is used to drive the liquid valve to overcome the elastic force of the elastic component to cause the second liquid flow channel of the liquid valve to be disconnected from the liquid channel of the main body;

[0009] The spray mechanism includes an air cap, a liquid cap and a nut, wherein the inlet of the liquid cap is connected to the outlet of the liquid channel, and the air cap is connected to the outlet of the gas channel and the outlet of the liquid cap; the nut is installed on the main body and is used to fix the air cap and the liquid cap on the main body, and the nut is provided with a nozzle or a spray assembly is installed on it.

[0010] Preferably, the liquid valve includes a valve body arranged in the liquid channel; the valve body is provided with the second liquid flow channel, and the outlet of the second liquid flow channel is located on the side of the valve body; the valve body is provided with a ejector portion near the inlet of the liquid channel, and under the elastic force of the elastic component, the ejector portion blocks the outlet of the liquid channel; the valve body is provided with a piston portion near the liquid interface pipe, wherein the diameter of the piston portion is larger than the diameter of the valve body; and a piston cavity that cooperates with the piston portion and allows the piston portion to make axial movement is provided in the cylinder nut at a position corresponding to the piston portion.

[0011] Preferably, the elastic component includes a spring; an installation cavity is provided in the cylinder nut, and the liquid interface tube is connected with the liquid valve after passing through the installation cavity; the spring is arranged in the installation cavity and is sleeved on the outside of the liquid interface tube, one end of the spring acts on the cylinder nut, and the other end acts on the liquid valve; the elastic force of the spring causes the ejector pin of the liquid valve to seal at the inlet of the liquid channel.

[0012] Preferably, when the ejector needle portion of the liquid valve blocks the inlet of the liquid channel, a cavity is formed between the piston portion of the liquid valve and the gas channel, and the outlet of the gas channel is connected to the cavity; the gas flowing out from the outlet of the gas channel prompts the piston portion to overcome the elastic force of the spring and move in the opposite direction to open the inlet of the liquid channel, thereby forming the valve opening mechanism.

[0013] Preferably, the liquid interface tube is located in the middle of the cylinder nut and is coaxially arranged with the cylinder nut; the gas flow channels are multiple groups, and the multiple groups of gas flow channels are located on the outside of the liquid interface tube and are arranged in a circle; correspondingly, the liquid channel is located at the center of the main body and is coaxially arranged with the main body; the gas channels are multiple groups, and the multiple groups of gas channels are located on the outside of the liquid channel and are arranged in a circle.

[0014] Preferably, a scale adjustment ring is provided between the main body and the cylinder nut, and the scale adjustment ring is mounted on the threaded connection portion of the cylinder nut.

[0015] Preferably, a screw ring is further provided on the threaded connection portion of the cylinder nut, and an O-ring is provided between the screw ring and the scale adjustment ring.

[0016] Preferably, sealing rings are provided between the liquid cap and the main body, between the main body and the liquid valve, and between the gas nut and the main body.

[0017] Preferably, the nut is provided with a plurality of nozzles, and the inner cavity of the nut is connected with the outlet of the air cap and the outlet of the liquid cap, thereby forming a gas-liquid mixing chamber.

[0018] Preferably, a liquid tube and an air tube are installed on the nut, the liquid tube and the air tube are coaxially arranged, and the liquid tube is located inside the air tube; wherein the air tube is connected to the outlet of the air cap; and the liquid tube is connected to the outlet of the liquid cap.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] 1. The miniature adjustable flow dual-fluid atomizing nozzle of the utility model can adjust the distance between the main body and the cylinder nut by rotating the main body, so as to adjust the distance between the inlet end of the liquid channel and the liquid valve. In this way, under the same gas pressure (that is, when the stroke of the reverse movement of the piston part is the same), since the distance between the liquid valve and the inlet end of the liquid channel changes, it is equivalent to changing the opening of the inlet end of the liquid channel, thereby changing the liquid flow passing through and entering the liquid cap, so as to achieve the purpose of adjusting the spray amount.

[0021] 2. The steps of adjusting the spray volume of the micro adjustable flow dual-fluid atomizing nozzle of the utility model are also simpler and more direct, and the adjustment accuracy is higher. In addition, the structure of the micro adjustable flow dual-fluid atomizing nozzle of the utility model is simpler, and the manufacturing cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 and Figure 2 The schematic diagram of the structure of the first specific embodiment of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model from two different perspectives

[0023] Figure 3 It is a cross-sectional view of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the liquid valve.

[0025] Figure 5It is a schematic structural diagram of a second specific implementation mode of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model.

[0026] Figure 6 It is a cross-sectional view (partial) of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0028] See also Figure 1-Figure 4 The utility model discloses a micro dual-fluid atomizing nozzle with adjustable flow rate, comprising a main body 1, an air inlet mechanism, a liquid inlet mechanism and a spray mechanism arranged in the main body 1.

[0029] See also Figure 1-Figure 4 The air intake mechanism includes a cylinder nut 2, which is installed on the main body 1. The cylinder nut 2 is connected to the main body 1 through a threaded connection, that is, a threaded connection portion is provided on the cylinder nut 2, and an external thread is provided on the threaded connection portion; an internal thread matching the external thread is provided in the main body 1; the gas flow channel 201 of the cylinder nut 2 is connected to the gas channel 102 in the main body 1.

[0030] See also Figure 1-Figure 4 The liquid inlet mechanism includes a liquid interface tube 3, a liquid valve 8 and a valve opening mechanism for driving the liquid valve 8 to move, wherein a first liquid flow channel 301 is provided in the liquid interface tube 3; a second liquid flow channel 801 is provided in the liquid valve 8; the liquid valve 8 is installed in the cylinder nut 2 through an elastic component; the elastic force of the elastic component causes the second liquid flow channel 801 of the liquid valve 8 to be disconnected from the liquid channel 101 of the main body 1; the valve opening mechanism is used to drive the liquid valve 8 to overcome the elastic force of the elastic component to cause the liquid valve 8 to move. The second liquid flow channel 801 and the liquid channel 101 of the main body 1; in the present embodiment, the liquid interface tube 3 is located in the middle of the cylinder nut 2 and is coaxially arranged with the cylinder nut 2; the gas flow channels 201 are multiple groups, and the multiple groups of gas flow channels 201 are located on the outside of the liquid interface tube 3 and are arranged in a circle; correspondingly, the liquid channel 101 is located at the center of the main body 1 and is coaxially arranged with the main body 1; the gas channels 102 are multiple groups, and the multiple groups of gas channels 102 are located on the outside of the liquid channels 101 and are arranged in a circle.

[0031] See also Figure 1-Figure 4The liquid valve 8 comprises a valve body 802 arranged in the liquid channel 101; the valve body 802 is provided with the second liquid flow channel 801, and the outlet of the second liquid flow channel 801 is located on the side of the valve body 802; the valve body 802 is provided with a pin portion 803 near the inlet of the liquid channel 101, and under the elastic force of the elastic component, the pin portion 803 blocks the outlet of the liquid channel 101; the valve body 802 is provided with a piston portion 804 near the liquid interface pipe 3, wherein the diameter of the piston portion 804 is greater than the diameter of the valve body 802; the cylinder nut 2 is provided with a piston cavity that cooperates with the piston portion 804 and allows the piston portion 804 to move axially at a position corresponding to the piston portion 804, that is, the length of the piston cavity is greater than the length of the piston portion 804, so that the piston portion 804 drives the liquid valve 8 to move, thereby causing the pin portion 803 to separate from the inlet end of the liquid channel 101.

[0032] See also Figure 1-Figure 4 The elastic component includes a spring 9; an installation cavity is provided in the cylinder nut 2, and the liquid interface tube 3 is connected with the liquid valve 8 after passing through the installation cavity; the spring 9 is arranged in the installation cavity and is sleeved on the outside of the liquid interface tube 3, one end of the spring 9 acts in the cylinder nut 2, and the other end acts on the liquid valve 8; the elastic force of the spring 9 prompts the ejector pin 803 of the liquid valve 8 to block the inlet of the liquid channel 101.

[0033] In this embodiment, when the ejector needle portion 803 of the liquid valve 8 blocks the inlet of the liquid channel 101, a cavity 12 is formed between the piston portion 804 of the liquid valve 8 and the gas channel 102, and the outlet of the gas channel 201 is connected to the cavity 12; the gas flowing out from the outlet of the gas channel 201 prompts the piston portion 804 to overcome the elastic force of the spring 9 and move in the opposite direction to open the inlet of the liquid channel 101, thereby forming the valve opening mechanism; through the above-mentioned arrangement, when the micro-adjustable flow dual-fluid atomizing nozzle of the utility model is working, the high-pressure gas entering from the cylinder nut 2 passes through the gas channel 20 1 and then enters into the cavity 12, thereby increasing the gas pressure in the cavity 12, so as to prompt the piston portion 804 to overcome the elastic force of the spring 9 and move, so that the ejector pin portion 803 of the liquid valve 8 is away from the inlet of the liquid channel 101, so that the second liquid flow channel 801 in the liquid valve 8 is connected with the liquid channel 101, so that the liquid entering from the liquid interface tube 3 will pass through the first liquid flow channel 301, the second liquid flow channel 801, and the liquid channel 101 in sequence and then enter into the liquid cap 6, and finally enter into the gas-liquid mixing chamber of the air cap 4 or enter into the spray assembly installed on the nut 5.

[0034] See also Figure 1-Figure 4 , the spray assembly includes an air cap 4, a liquid cap 6 and a nut 5, wherein the inlet of the liquid cap 6 is communicated with the outlet of the liquid channel 101, and the air cap 4 is communicated with the outlet of the gas channel 102 and the outlet of the liquid cap 6; the nut 5 is installed on the main body 1, and is used to fix the air cap 4 and the liquid cap 6 on the main body 1, and the nut 5 is provided with a nozzle or a spray assembly is installed; in this embodiment, the nut 5 is provided with a plurality of nozzles, and the inner cavity of the nut 5 is communicated with the outlet of the air cap 4 and the outlet of the liquid cap 6, thereby forming a gas-liquid mixing chamber, and the gas-liquid mixing chamber is used to achieve gas-liquid mixing.

[0035] See also Figure 1-Figure 4, a scale adjustment ring 6 is provided between the main body 1 and the cylinder nut 2, and the scale adjustment ring 6 is installed on the threaded connection part of the cylinder nut 2; since the miniature adjustable flow dual-fluid atomizing nozzle of the utility model can adjust the distance between the main body 1 and the cylinder nut 2 by rotating the main body 1, so as to adjust the distance between the inlet end of the liquid channel 101 and the ejector pin 803 of the liquid valve 8, in this way, under the same gas pressure (that is, when the stroke of the reverse movement of the piston part 804 is the same), since the distance between the ejector pin 803 and the inlet end of the liquid channel 101 changes, it is equivalent to changing the opening of the inlet end of the liquid channel 101, thereby changing the liquid flow passing through and entering the liquid cap 6, so as to achieve the purpose of adjusting the spray amount; in addition, the purpose of setting the scale adjustment ring 6 is to accurately adjust the rotation stroke of the main body 1, so as to achieve the purpose of accurately adjusting the spray amount.

[0036] See also Figure 1-Figure 4 A screw ring 10 is also provided on the threaded connection portion of the cylinder nut 2, and an O-ring 11 is provided between the screw ring 10 and the scale adjustment ring 6; by locking the screw ring 10, the O-ring 11 can be pressed against the scale adjustment ring 6, so as to adjust the tightness of the scale adjustment ring 6, which facilitates the size adjustment of the nozzle opening of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model.

[0037] See also Figure 1-Figure 4 Sealing rings are provided between the liquid cap 6 and the main body 1, between the main body 1 and the liquid valve 8, and between the cylinder nut 2 and the main body 1. Sealing rings can be provided to achieve sealing effect, and the sealing rings can be O-rings.

[0038] See also Figure 1-Figure 4 The working principle of the miniature adjustable flow dual-fluid atomizing nozzle of the utility model is:

[0039] During operation, the cylinder nut 2 is connected to the air inlet pipe, and the liquid interface tube 3 is connected to the liquid inlet pipe; the high-pressure gas entering the cylinder nut 2 from the air inlet pipe passes through the gas flow channel 201 and then enters the cavity 12, thereby increasing the gas pressure in the cavity 12, so as to prompt the piston part 804 to overcome the elastic force of the spring 9 and move, so that the ejector needle part 803 of the liquid valve 8 is away from the inlet of the liquid channel 101, so that the second liquid flow channel 801 in the liquid valve 8 is connected with the liquid channel 101, so that the liquid entering from the liquid interface tube 3 will pass through the first liquid flow channel 301, the second liquid flow channel 801, and the liquid channel 101 in turn and then enter the liquid cap 6, and finally enter the gas-liquid mixing chamber of the air cap 4 or enter the spray assembly installed on the nut 5.

[0040] In the above process, the distance between the main body 1 and the cylinder nut 2 can be adjusted by rotating the main body 1, so as to adjust the distance between the inlet end of the liquid channel 101 and the ejector pin 803 of the liquid valve 8. In this way, under the same gas pressure (that is, when the stroke of the reverse movement of the piston part 804 is the same), since the distance between the ejector pin 803 and the inlet end of the liquid channel 101 changes, it is equivalent to changing the opening of the inlet end of the liquid channel 101, thereby changing the liquid flow passing through and entering the liquid cap 6, so as to achieve the purpose of adjusting the spray amount; in addition, the purpose of setting the scale adjustment ring 6 is to accurately adjust the rotation stroke of the main body 1, so as to achieve the purpose of accurately adjusting the spray amount.

[0041] Finally, the miniature adjustable flow dual-fluid atomizing nozzle of the utility model solves the nozzle installation space requirement, the spray volume adjustment is simple and direct, and because the main body 1 has a lettered size, the main body 1 can be rotated to accurately adjust the inlet opening of the liquid channel 101 according to the size to control the flow; in addition, the liquid cap 6 and the air cap 4 can be selected according to the spray form requirements, wherein the spray forms include solid cone, hollow cone, fan-shaped, etc. The connection structure of the gas and liquid pipelines is simple, that is, the liquid inlet pipeline is sleeved in the air inlet pipeline, which can well solve the pipeline layout. For multiple stations in the equipment and each station needs to spray independently, the miniature adjustable flow dual-fluid atomizing nozzle of the utility model can better reflect the advantages of the design.

[0042] Example 2

[0043] See also Figure 5-Figure 6 The difference between this embodiment and embodiment 1 is that: a liquid tube 13 and an air tube 14 are installed on the nut 5, the liquid tube 13 and the air tube 14 are coaxially arranged, and the liquid tube 13 is located on the inner side of the air tube 14; wherein the air tube 14 is connected to the outlet of the air cap 4; and the liquid tube 13 is connected to the outlet of the liquid cap 6.

[0044] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A micro dual-fluid atomizing nozzle with adjustable flow rate, characterized in that: It includes a main body, an air intake mechanism, a liquid intake mechanism and a spray mechanism arranged in the main body, wherein: The air intake mechanism comprises a cylinder nut, which is mounted on the main body and is connected to the main body via a thread; a gas flow passage of the cylinder nut is connected to a gas channel in the main body; The liquid inlet mechanism comprises a liquid interface pipe, a liquid valve and a valve opening mechanism for driving the liquid valve to move, wherein a first liquid flow channel is arranged in the liquid interface pipe; a second liquid flow channel is arranged in the liquid valve; the liquid valve is installed in the cylinder nut through an elastic component; the elastic force of the elastic component causes the second liquid flow channel of the liquid valve to be disconnected from the liquid channel of the main body; the valve opening mechanism is used to drive the liquid valve to overcome the elastic force of the elastic component to cause the second liquid flow channel of the liquid valve to be disconnected from the liquid channel of the main body; The spray mechanism includes an air cap, a liquid cap and a nut, wherein the inlet of the liquid cap is connected to the outlet of the liquid channel, and the air cap is connected to the outlet of the gas channel and the outlet of the liquid cap; the nut is installed on the main body and is used to fix the air cap and the liquid cap on the main body, and the nut is provided with a nozzle or a spray assembly is installed on it.

2. The micro adjustable flow two-fluid atomizing nozzle according to claim 1, characterized in that: The liquid valve includes a valve body arranged in the liquid channel; the valve body is provided with the second liquid flow channel, and the outlet of the second liquid flow channel is located on the side of the valve body; the valve body is provided with a ejector part near the inlet of the liquid channel, and under the elastic force of the elastic component, the ejector part blocks the outlet of the liquid channel; the valve body is provided with a piston part near the liquid interface pipe, wherein the diameter of the piston part is larger than the diameter of the valve body; and a piston cavity that cooperates with the piston part and allows the piston part to make axial movement is provided in the cylinder nut at a position corresponding to the piston part.

3. The micro adjustable flow two-fluid atomizing nozzle according to claim 2, characterized in that: The elastic component includes a spring; an installation cavity is provided in the cylinder nut, and the liquid interface tube is connected with the liquid valve after passing through the installation cavity; the spring is arranged in the installation cavity and is sleeved on the outside of the liquid interface tube, one end of the spring acts on the cylinder nut, and the other end acts on the liquid valve; the elastic force of the spring causes the ejector pin of the liquid valve to seal at the inlet of the liquid channel.

4. The micro adjustable flow two-fluid atomizing nozzle according to claim 3, characterized in that: When the ejector needle of the liquid valve blocks the inlet of the liquid channel, a cavity is formed between the piston of the liquid valve and the gas channel, and the outlet of the gas channel is connected to the cavity; the gas flowing out from the outlet of the gas channel prompts the piston to overcome the elastic force of the spring and move in the opposite direction to open the inlet of the liquid channel, thereby forming the valve opening mechanism.

5. The micro-adjustable flow rate two-fluid atomizing nozzle according to claim 4, characterized in that: The liquid interface tube is located in the middle of the cylinder nut and is coaxially arranged with the cylinder nut; the gas flow channels are multiple groups, and the multiple groups of gas flow channels are located on the outside of the liquid interface tube and are arranged in a circle; correspondingly, the liquid channel is located at the center of the main body and is coaxially arranged with the main body; the gas channels are multiple groups, and the multiple groups of gas channels are located on the outside of the liquid channel and are arranged in a circle.

6. The micro adjustable flow two-fluid atomizing nozzle according to claim 1, characterized in that: A scale adjustment ring is arranged between the main body and the cylinder nut, and the scale adjustment ring is installed on the threaded connection part of the cylinder nut.

7. The micro adjustable flow two-fluid atomizing nozzle according to claim 6, characterized in that: A screw ring is also arranged on the threaded connection part of the cylinder nut, and an O-ring is arranged between the screw ring and the scale adjustment ring.

8. The micro adjustable flow two-fluid atomizing nozzle according to claim 7, characterized in that: Sealing rings are arranged between the liquid cap and the main body, between the main body and the liquid valve, and between the cylinder nut and the main body.

9. The micro adjustable flow two-fluid atomizing nozzle according to claim 1, characterized in that: The nut is provided with a plurality of nozzles, and the inner cavity of the nut is communicated with the outlet of the air cap and the outlet of the liquid cap, thereby forming a gas-liquid mixing cavity.

10. The micro adjustable flow two-fluid atomizing nozzle according to claim 1, characterized in that: A liquid tube and an air tube are installed on the nut, the liquid tube and the air tube are coaxially arranged, and the liquid tube is located inside the air tube; wherein the air tube is connected to the outlet of the air cap; and the liquid tube is connected to the outlet of the liquid cap.

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