A high-viscosity liquid atomizing nozzle

Abstract

This utility model relates to an atomizing nozzle for high-viscosity liquids, comprising a nozzle housing and a nozzle core located inside the nozzle housing. The nozzle housing includes an upper shell and a bottom cover connected to the upper shell. An air inlet is provided on the upper shell, and an air outlet is provided at the lower end of the bottom cover. The upper end of the nozzle core is connected to the upper shell, and the lower end of the nozzle core is exposed through the air outlet at the lower end of the bottom cover. The nozzle core and the nozzle housing cooperate to form an air channel for compressed air to pass through. An annular baffle is fixed on the outer wall of the nozzle core, and an inclined groove is provided on the annular baffle for allowing compressed air to pass through and for changing the direction and rotating the compressed air. A liquid inlet is provided at the upper end of the nozzle core, and a liquid outlet is provided at the lower end of the nozzle core. A solution channel is provided inside the nozzle core to connect the liquid inlet and the liquid outlet. This utility model has the characteristics of good atomization effect, not easy to clog, and adjustable spray angle.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy technology, and in particular to an atomizing nozzle for high-viscosity liquids. Background Technology

[0002] Powder metallurgy technology is widely used in various industries due to its advantages such as material saving, energy saving, low cost, and the ability to mass-produce near-net-shape and high dimensional accuracy parts. Non-segregation mixed powders are high-end products in the powder metallurgy industry, and their preparation methods are basically divided into two categories: dry mixing and wet mixing. Compared with dry mixing, wet mixing has the following advantages: simpler preparation process and lower cost; reduced dust and alloy element segregation; improved flowability and mold filling properties of alloy powder, increasing production efficiency; reduced demolding pressure; improved uniformity of composition and structure of green blanks during pressing and sintering processes; and improved product performance and dimensional consistency.

[0003] The wet mixing method is based on iron powder as the base powder. A binder dissolved in a solvent is evenly sprayed onto auxiliary powders, such as graphite, copper, and nickel, which have different densities, particle sizes, or morphologies from the base iron powder. After mixing evenly, the temperature is raised to evaporate the solvent, causing the auxiliary powders to adhere to the base powder. Finally, the finished product is obtained by sieving and batching.

[0004] Currently, high-viscosity adhesives obtained by dissolving styrene-butadiene rubber in dichloromethane are sprayed using traditional nozzles. These nozzles typically employ a pump to draw the liquid into the nozzle cavity, from which it is then ejected through small perforated nozzles. This method requires high-pressure pumps and places high demands on the strength of the spray pipes and nozzles. It also results in poor atomization, easy clogging of the small nozzles, and non-adjustable spray angles. To address these issues, this application proposes an atomizing nozzle for high-viscosity liquids. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing an atomizing nozzle for high-viscosity liquids.

[0006] This utility model is achieved through the following technical solution: providing an atomizing nozzle for high-viscosity liquids, including a nozzle housing and a nozzle core located inside the nozzle housing. The nozzle housing includes an upper shell and a bottom cover connected to the upper shell. An air inlet is provided on the upper shell, and an air outlet is provided at the lower end of the bottom cover. The upper end of the nozzle core is connected to the upper shell, and the lower end of the nozzle core is exposed through the air outlet at the lower end of the bottom cover. The nozzle core and the nozzle housing cooperate to form an air channel for compressed air to pass through. An annular baffle is fixed on the outer wall of the nozzle core, and an inclined groove is provided on the annular baffle for allowing compressed air to pass through and causing the compressed air to change direction and rotate. A liquid inlet is provided at the upper end of the nozzle core, and a liquid outlet is provided at the lower end of the nozzle core. A solution channel is provided inside the nozzle core to connect the liquid inlet and the liquid outlet.

[0007] Preferably, the inclined grooves are three evenly distributed along the circumference of the annular baffle, with all three grooves having the same inclination, each ranging from 45° to 60°. Liquid enters through the inlet at the upper end of the spray core and exits through the outlet at the lower end. Compressed air enters the air channel through the inlet, changes direction and rotates after passing through the inclined grooves, and then exits through the gap formed by the outlet and the lower end of the spray core, breaking up and dispersing the liquid to achieve atomization. The atomization spray angle can be adjusted by changing the length of the lower end of the spray core extending beyond the outlet at the bottom cover; a longer extension results in a smaller spray angle, and vice versa.

[0008] Preferably, the outer circumference of the annular baffle is made of rubber and the outer circumference of the annular baffle is in contact with the inner wall of the bottom cover. This can seal the annular baffle with the inner wall of the bottom cover, and the compressed air can only pass through the inclined groove, thereby changing the direction of the compressed air and causing it to rotate.

[0009] Preferably, both the upper shell and the bottom cover have internal cavities, and both the lower end of the upper shell and the upper end of the bottom cover are open. The air inlet is located on the side wall of the upper shell. The air inlet is connected to an air supply pipe, and an air valve is installed on the air supply pipe to deliver compressed air.

[0010] Preferably, the lower end of the upper shell is threaded to the upper end of the bottom cover, an internal thread is provided on the inner side wall of the lower end of the upper shell, and an external thread is provided on the outer side wall of the upper end of the bottom cover.

[0011] Preferably, a connecting through hole is provided on the top wall of the upper shell, the upper end of the spray core is threadedly connected to the connecting through hole, an internal thread is provided on the side wall of the connecting through hole, and an external thread is provided on the upper end of the spray core.

[0012] Preferably, the bottom of the cavity inside the bottom cover is an arc surface to facilitate smooth airflow output.

[0013] Preferably, the liquid inlet at the upper end of the spray core is connected to the liquid inlet pipe, and a spray pump is installed on the liquid inlet pipe.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model has lower pressure requirements for the spray pump and lower strength requirements for the pipeline and nozzle, thus overcoming the problems of traditional nozzles having high pressure requirements for the spray pump and high strength requirements for the spray pipeline and nozzle.

[0016] 2. This utility model has the characteristics of good atomization effect, not easy to clog, and adjustable spray angle. At the same time, it has a simple structure, is easy to maintain, and can be used for atomization spraying of high viscosity liquids. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the spray core of this utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0020] Figure 4 This is a cross-sectional view of the upper shell of this utility model;

[0021] Figure 5 This is a cross-sectional view of the bottom cover of this utility model;

[0022] As shown in the figure:

[0023] 1. Spray core, 2. Upper shell, 3. Bottom cover, 4. Air inlet, 5. Air outlet, 6. Annular baffle, 7. Inclined groove, 8. Solution channel, 9. Liquid inlet, 10. Liquid outlet. Detailed Implementation

[0024] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0025] like Figure 1-5 As shown, this utility model includes a nozzle housing and a nozzle core 1 located inside the nozzle housing. The nozzle housing includes an upper shell 2 and a bottom cover 3 connected to the upper shell 2. An air inlet 4 is provided on the upper shell 2, and an air outlet 5 is provided at the lower end of the bottom cover 3. The upper end of the nozzle core 1 is connected to the upper shell 2, and the lower end of the nozzle core 1 is exposed through the air outlet 5 at the lower end of the bottom cover 3.

[0026] The nozzle core 1 and the nozzle housing cooperate to form an air channel for compressed air to pass through. An annular baffle 6 is fixed on the outer wall of the nozzle core 1. An inclined groove 7 is provided on the annular baffle 6 to allow compressed air to pass through and to change the direction and rotate the compressed air. A liquid inlet 9 is provided at the upper end of the nozzle core 1 and a liquid outlet 10 is provided at the lower end of the nozzle core 1. A solution channel 8 is provided inside the nozzle core 1 to connect the liquid inlet 9 and the liquid outlet 10.

[0027] In this embodiment, the outer periphery of the annular baffle 6 is made of rubber and contacts the inner wall of the bottom cover 3. This ensures a seal between the annular baffle 6 and the inner wall of the bottom cover 3, allowing compressed air to pass only through the inclined grooves 7, thereby changing the direction and causing the compressed air to rotate. The inclined grooves 7 are three evenly distributed along the circumference of the annular baffle 6, with the same inclination. Each inclined groove 7 has an inclination of 45°-60°, and the inclination of the inclined groove 7 is the angle α formed by the inclined groove 7 and the horizontal direction. In this embodiment, the inclination α is 50°.

[0028] Liquid enters through the inlet 9 at the top of the nozzle core 1 and exits through the outlet 10 at the bottom. Compressed air enters the air channel through the inlet 4, changes direction and rotates after passing through the inclined groove 7, and then exits through the gap formed by the outlet 5 and the bottom of the nozzle core 1, breaking up and dispersing the liquid to achieve atomization. The atomization spray angle can be adjusted by adjusting the length of the lower end of the nozzle core 1 extending beyond the outlet 5 at the bottom of the base cover 3. The longer the extension, the smaller the spray angle, and vice versa.

[0029] Both the upper shell 2 and the bottom cover 3 have internal cavities. The lower end of the upper shell 2 and the upper end of the bottom cover 3 are open. The air inlet 4 is located on the side wall of the upper shell 2 and is connected to an air supply pipe. An air valve is installed on the air supply pipe, through which compressed air is supplied. In this embodiment, the lower end of the upper shell 2 is threaded to the upper end of the bottom cover 3. An internal thread is provided on the inner side wall of the lower end of the upper shell 2, and an external thread is provided on the outer side wall of the upper end of the bottom cover 3. The bottom of the internal cavity of the bottom cover 3 is curved to facilitate smooth airflow output.

[0030] A connecting through hole is provided on the top wall of the upper shell 2. The upper end of the spray core 1 is threaded to the connecting through hole. An internal thread is provided on the side wall of the connecting through hole. An external thread is provided on the upper end of the spray core 1. The liquid inlet 9 at the upper end of the spray core 1 is connected to the liquid inlet pipe. A spray pump is installed on the liquid inlet pipe.

[0031] In practical use, first install the spray core 1 on the upper shell 2, then install the bottom cover 3 on the upper shell 2. Ensure that the lower end of the spray core 1 protrudes through the air outlet 5 at the lower end of the bottom cover 3. The length of the lower end of the spray core 1 extending out of the bottom cover 3 can be adjusted by rotating the bottom cover 3 according to the spraying needs. When spraying liquid, first open the air valve, then open the liquid inlet pipe and the liquid pump to inject the liquid, thus achieving liquid atomization.

[0032] This invention has lower pressure requirements for the spray pump and lower strength requirements for the pipeline and nozzle, overcoming the problems of traditional nozzles having high requirements for spray pump pressure and high strength requirements for spray pipeline and nozzle. This invention has the characteristics of good atomization effect, not easy to clog, and adjustable spray angle. At the same time, it has a simple structure, is easy to maintain, and can be used for atomized spraying of high viscosity liquids.

[0033] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. An atomizing nozzle for high-viscosity liquids, characterized in that: The device includes a nozzle housing and a nozzle core located inside the nozzle housing. The nozzle housing includes an upper shell and a bottom cover connected to the upper shell. An air inlet is provided on the upper shell, and an air outlet is provided at the lower end of the bottom cover. The upper end of the nozzle core is connected to the upper shell, and the lower end of the nozzle core is exposed through the air outlet at the lower end of the bottom cover. The nozzle core and the nozzle housing cooperate to form an air channel for compressed air to pass through. An annular baffle is fixed on the outer wall of the nozzle core, and an inclined groove is provided on the annular baffle for allowing compressed air to pass through and causing the compressed air to change direction and rotate. A liquid inlet is provided at the upper end of the nozzle core, and a liquid outlet is provided at the lower end of the nozzle core. A solution channel is provided inside the nozzle core to connect the liquid inlet and the liquid outlet.

2. The atomizing nozzle for high-viscosity liquids according to claim 1, characterized in that: The inclined grooves are three evenly distributed along the circumference of the annular baffle, and the inclination of the three inclined grooves is the same, with each inclined groove having an inclination of 45°-60°.

3. The atomizing nozzle for high-viscosity liquids according to claim 1, characterized in that: The outer circumference of the annular baffle is made of rubber, and the outer circumference of the annular baffle contacts the inner wall of the bottom cover to seal the annular baffle with the inner wall of the bottom cover.

4. The atomizing nozzle for high-viscosity liquids according to claim 1, characterized in that: Both the upper shell and the bottom cover have cavities inside, and the lower end of the upper shell and the upper end of the bottom cover are open. The air inlet is located on the side wall of the upper shell.

5. The atomizing nozzle for high-viscosity liquids according to claim 1, characterized in that: The lower end of the upper shell is threaded to the upper end of the bottom cover. An internal thread is provided on the inner side wall of the lower end of the upper shell, and an external thread is provided on the outer side wall of the upper end of the bottom cover.

6. The atomizing nozzle for high-viscosity liquids according to claim 1, characterized in that: A connecting through hole is provided on the top wall of the upper shell, and the upper end of the spray core is threadedly connected to the connecting through hole. An internal thread is provided on the side wall of the connecting through hole, and an external thread is provided on the upper end of the spray core.

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