Atomization treatment device for aluminum alloy profile extrusion production

Abstract

The utility model relates to the field of aluminum alloy profile production equipment, in particular to an atomization treatment device for extrusion production of aluminum alloy profiles, and mainly solves the problems of non-uniform atomized particles and unstable cooling efficiency in the prior art. Comprising a quenching box, an atomization treatment mechanism, an ultrasonic atomizer, a water circulation mechanism, a nitrogen storage tank, an air pump, an air pipe, a first switch valve, a second switch valve, a water pump, a water inlet pipe, a water outlet pipe and a fan, a quenching cavity is formed in the quenching box, an inlet and an outlet which are communicated with the quenching cavity are formed in the quenching box, and a mounting frame is arranged on the periphery of the quenching cavity; the atomizing treatment mechanism is arranged on the mounting frame, a through hole is formed in the top of the quenching box, the fan is arranged at the position of the through hole, a water storage tank is arranged at the bottom of the quenching box, a water outlet communicated with the water storage tank is formed in the quenching box, and the water outlet is connected with the water inlet end of the water circulation mechanism through a water outlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy profile production equipment, and in particular to an atomization treatment device for aluminum alloy profile extrusion production. Background Technology

[0002] After extrusion molding, aluminum alloy profiles require quenching to improve their mechanical properties. Traditional quenching methods often employ water cooling or air cooling. Water cooling offers rapid cooling, but it can easily lead to profile deformation, high residual stress, and high water consumption. Air cooling, on the other hand, suffers from poor cooling uniformity, making it difficult to meet the processing requirements of high-strength aluminum alloys.

[0003] With the development of technology, spray quenching has emerged. Although existing spray quenching methods can alleviate the above problems, they suffer from uneven atomization particles and unstable cooling efficiency. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model provides an atomization treatment device for aluminum alloy profile extrusion production, which mainly solves the problems of uneven atomization particles and unstable cooling efficiency in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Atomization treatment device for aluminum alloy profile extrusion production includes a quenching box, an atomization treatment mechanism, an ultrasonic atomizer, a water circulation mechanism, a nitrogen storage tank, an air pump, an air pipe, a first switch valve, a second switch valve, a water pump, a water inlet pipe, a water outlet pipe, and a fan. The quenching box has a quenching chamber, and the quenching box is provided with an inlet and an outlet communicating with the quenching chamber. The quenching chamber is surrounded by a mounting frame, and the atomization treatment mechanism is mounted on the mounting frame. The top of the quenching box is provided with a through hole, and the fan is located at the through hole. The bottom of the quenching box is provided with a water storage tank, and the quenching box is provided with a drain outlet communicating with the water storage tank. The drain outlet is connected to the water inlet of the water circulation mechanism through a water outlet pipe.

[0007] The atomizing mechanism includes a plurality of media adjustment units and nozzles disposed on each media adjustment unit. The media adjustment unit includes a housing, and the housing has an air chamber. The housing is provided with an atomizing inlet, a first air inlet, a second air inlet, and an air outlet communicating with the air chamber. The nozzle is rotatably disposed at the air outlet.

[0008] The water outlet of the water circulation mechanism is connected to the mist inlet of each medium regulating unit through the water inlet pipe. The ultrasonic atomizer and water pump are respectively installed on the water inlet pipe. The nitrogen storage tank is connected to the first air inlet and the second air inlet through the air pipe. The air pump is installed on the air pipe. The first switch valve and the second switch valve are respectively installed at the first air inlet and the second air inlet.

[0009] Furthermore, the nozzle includes a sidewall with an annular structure and an end face located at one axial end of the sidewall. The end face is provided with a plurality of jet holes arranged in a matrix. A plurality of air guide grooves with an arc-shaped structure are provided on the outer side of the sidewall. The air guide grooves are connected to the second air inlet.

[0010] Furthermore, the housing includes a first housing, a second housing, a third housing, and an annular rotating cover. The second housing is threadedly connected to one axial end of the first housing. The mist inlet is located on the other axial end of the first housing. The first air inlet is located on the circumferential surface of the second housing. The third housing is snapped onto the other axial end of the second housing and is locked to the second housing by the annular rotating cover. The second air inlet is located on the circumferential surface of the third housing. The air outlet is located on one axial end of the third housing away from the second housing. The nozzle is snapped onto the air outlet.

[0011] Furthermore, the other axial end of the second housing has an extension portion extending along its axial direction, and an air guide channel is formed between the extension portion and the second housing, and the air guide channel is in communication with the air chamber.

[0012] Furthermore, the housing is equipped with an anti-backflow component to prevent fog from flowing back through the fog inlet.

[0013] Furthermore, the anti-backflow component is movably connected to the housing via a connecting bracket.

[0014] Furthermore, the anti-backflow assembly includes a mounting plate bolted to the connecting frame, a guide sleeve fixed to the mounting plate, a first vent hole on the guide sleeve, a second vent hole on the mounting plate and located around the guide sleeve, an adjusting screw threaded to the mounting plate, a top plate on the adjusting screw, a sphere inside the guide sleeve, and a spring between the sphere and the top plate. The central axis of the guide sleeve coincides with the central axis of the mist inlet.

[0015] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This atomization treatment device for aluminum alloy profile extrusion production transports the extruded aluminum alloy profile into the quenching chamber, starts the ultrasonic atomizer to generate water mist, and introduces the water mist into the atomization treatment mechanism. At the same time, it controls the opening and closing of the air pump, the first switch valve, and the second switch valve, and can switch between water mist, air mist, and mixed mist modes. The atomization pressure, flow rate, and droplet size are adjusted in real time according to the profile temperature to improve the uniformity of atomized particles, thereby cooling the aluminum alloy profile. Then, the temperature is controlled by starting the fan to avoid the profile surface from becoming too cold and to improve the stability of cooling. Thus, the quenching of aluminum alloy profiles is efficient, energy-saving, and highly controllable. Attached Figure Description

[0016] Figure 1This is a top view of the quenching control system in an embodiment of this utility model;

[0017] Figure 2 This is a cross-sectional view of the quenching box in an embodiment of this utility model;

[0018] Figure 3 This is a front view schematic diagram of the medium adjustment unit in an embodiment of this utility model;

[0019] Figure 4 This is a cross-sectional view of the medium adjustment unit in an embodiment of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the nozzle in an embodiment of this utility model;

[0021] Figure 6 This is a circuit module diagram of an embodiment of the present utility model. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] The embodiment of this utility model is as follows:

[0024] refer to Figures 1 to 6 As shown, a quenching control system for aluminum alloy profile extrusion production includes a frame, a control device 2, a conveying mechanism 1, and an atomization treatment device. The atomization treatment device includes a quenching chamber 3, an atomization treatment mechanism 4, an ultrasonic atomizer 5, a water circulation mechanism 6, a nitrogen storage tank 7, an air pump 8, an air pipe 9, a first switching valve 10, a second switching valve 11, a water pump 12, a water inlet pipe 13, a water outlet pipe 14, and a fan 15. The quenching chamber 3 has a quenching cavity 31, and the quenching chamber 3 is provided with an inlet 32 ​​and an outlet communicating with the quenching cavity 31. 33. The conveying mechanism 1 is installed in the quenching chamber 31 through the inlet 32 ​​and the outlet 33 for conveying aluminum alloy profiles. The quenching chamber 31 is provided with a mounting frame 16 around its perimeter. The atomizing treatment mechanism 4 is installed on the mounting frame 16. The top of the quenching box 3 is provided with a through hole 34. The fan 15 is installed at the through hole 34. The bottom of the quenching box 3 is provided with a water storage tank 17. The quenching box 3 is provided with a drain outlet 18 that communicates with the water storage tank 17. The drain outlet 18 is connected to the water inlet of the water circulation mechanism 6 through a water outlet pipe 14.

[0025] The atomizing mechanism 4 includes fourteen medium adjustment units 41 and nozzles 42 disposed on each medium adjustment unit. Each medium adjustment unit 41 includes a housing 411, which has an air chamber 412. The housing 411 is provided with an atomizing inlet 413, a first air inlet 414, a second air inlet 415 and an air outlet 416 communicating with the air chamber 412. The nozzle 42 is rotatably disposed at the air outlet 416. The nozzle 42 includes a side wall 421 with an annular structure and an end face 422 disposed at one axial end of the side wall 421. The end face 422 is provided with twenty-nine jet holes 423 arranged in a matrix. Sixteen air guide grooves 424 with an arc structure are provided on the outer side of the side wall 421. The air guide grooves 424 are connected to the second air inlet 415.

[0026] The water outlet of the water circulation mechanism 6 is connected to the mist inlet 413 of each medium adjustment unit 41 through the water inlet pipe 13. The ultrasonic atomizer 5 and the water pump 12 are respectively installed on the water inlet pipe 13. The nitrogen storage tank 7 is connected to the first air inlet 414 and the second air inlet 415 through the air pipe 9. The air pump 8 is installed on the air pipe 9. The first switch valve 10 and the second switch valve 11 are respectively installed at the first air inlet 414 and the second air inlet 415.

[0027] The transmission mechanism 1, ultrasonic atomizer 5, air pump 8, first switching valve 10, second switching valve 11, water pump 12, and fan 15 are electrically connected to the control device 2.

[0028] This atomization treatment device for aluminum alloy profile extrusion production conveys the extruded aluminum alloy profile into the quenching chamber 3 via a conveying mechanism 1. A control device 2 controls the ultrasonic atomizer 5 to generate water mist, which is then introduced into the atomization treatment mechanism 4. Simultaneously, the device controls the opening and closing of the air pump 8, the first switching valve 10, and the second switching valve 11, allowing switching between water mist, air mist, and mixed mist media modes. The atomization pressure, flow rate, and droplet size are adjusted in real-time according to the profile temperature to improve the uniformity of the atomized particles, thereby cooling the aluminum alloy profile. A fan 15 is then activated to assist in temperature control, preventing the profile surface from becoming too cold and improving cooling stability. This results in efficient, energy-saving, and highly controllable quenching of the aluminum alloy profile. Furthermore, nitrogen pumped into the second air inlet 415 acts on the arc-shaped air guide groove 424 of the nozzle 42, causing the nozzle 42 to rotate, improving the uniformity of the mist spray and forming an air hood for targeted mist spraying, thus enhancing the overall performance.

[0029] Specifically, the control device 2 includes a controller 21, an infrared thermometer 22 installed in the quenching chamber 3, a humidity sensor 23 installed in the quenching chamber 3, a liquid flow meter 24 installed on the water inlet pipe 13, a gas flow meter 25 installed on the gas pipe 9, a pressure sensor 26 installed on the nozzle 42, and an image recognition unit 27. The infrared thermometer 22, humidity sensor 23, liquid flow meter 24, gas flow meter 25, pressure sensor 26, and image recognition unit 27 are electrically connected to the controller 21.

[0030] The control method of the control device includes the following steps:

[0031] I. Initial Stage (T=500℃):

[0032] 1. Turn on the high-pressure water mist (pressure 15MPa, particle size 80μm) to cover the entire surface of the aluminum alloy profile;

[0033] 2. Nitrogen gas is mixed at a ratio of 20% to prevent oxide scale formation;

[0034] II. Rapid Cooling Stage (T = 500℃~200℃, time 8s):

[0035] 3. Temperature is collected every 2 seconds, and the PID algorithm dynamically increases the pressure to 18MPa, reducing the droplet size to 60μm;

[0036] 4. Divide the quenching chamber into 6 longitudinal control zones. If the local temperature deviation is greater than 30℃, trigger the addition of 2 sets of nozzles 42 in that zone.

[0037] III. Slow Cooling Section (T = 200℃~50℃, time 15s):

[0038] 5. Switch to ultrasonic atomizer 5 (frequency 50kHz, particle size 25μm) and start fan 15 (wind speed 3m / s) simultaneously;

[0039] 6. After the image recognition unit 27 confirms that there is no deformation, it enters the natural cooling zone.

[0040] PID algorithm control:

[0041] Input variables: temperature deviation (ΔT), temperature change rate (dT / dt), humidity deviation (ΔH); Output variables: nozzle 42 pressure, medium flow rate, droplet size setpoint;

[0042] Example of a dynamic adjustment formula:

[0043]

[0044] Where e(t) = T(target) - T(actual), and the coefficients Kp, Ki, Kd are adaptively adjusted according to the quenching stage;

[0045] Media switching logic:

[0046] When ΔT>100℃, the high-pressure water mist + nitrogen mixing mode (water-nitrogen volume ratio 3:1) is activated to utilize the inertness of nitrogen to prevent oxidation.

[0047] When ΔT≤50℃, switch to ultrasonic fine atomization (pure water mist, particle size 20~50μm) to reduce thermal stress;

[0048] Droplet size adjustment:

[0049] By adjusting the ultrasonic frequency (20kHz~100kHz) and the nozzle orifice diameter:

[0050]

[0051] Where d is the droplet size, σ is the liquid surface tension, ρ is the density, and f is the driving frequency.

[0052] In this embodiment, the housing 411 includes a first housing 101, a second housing 102, a third housing 103, and an annular rotating cover 104. The second housing 102 is threaded to one axial end of the first housing 101. The mist inlet 413 is located on the other axial end of the first housing 101. The first air inlet 414 is located on the circumferential surface of the second housing 102. The third housing 103 is snapped onto the other axial end of the second housing 102 and is locked to the second housing 102 by the annular rotating cover 104. The second air inlet 415 is located on the circumferential surface of the third housing 103. The air outlet 416 is located on one axial end of the third housing 103 away from the second housing 102. The nozzle 42 is snapped onto the air outlet 416, which improves the maintenance convenience of the medium adjustment unit 41 and facilitates the production of the housing 411.

[0053] Furthermore, the other axial end of the second housing 102 has an extension 105 extending along its axial direction, and the extension 105 and the second housing 102 form a gas guiding channel 106. The gas guiding channel 106 is connected to the gas chamber 412, reducing the impact of nitrogen pumping on the flow of mist in the gas chamber 412.

[0054] Furthermore, the housing 411 is provided with an anti-backflow component 20 to prevent fog from flowing back through the fog inlet 413. The anti-backflow component 20 is movably connected to the housing 411 via a connecting bracket 107. The anti-backflow component 20 includes a mounting plate 202 locked to the connecting bracket 107 by bolts 201, a guide sleeve 203 fixed to the mounting plate 202, a first vent 204 on the guide sleeve 203, a second vent 205 on the mounting plate 202 and located around the guide sleeve 203, and a connecting plate 202. The system includes a threaded adjusting screw 206, a top plate 207 mounted on the adjusting screw 206, a ball 208 located inside the guide sleeve 203, and a spring 209 located between the ball 208 and the top plate 207. The central axis of the guide sleeve 203 coincides with the central axis of the mist inlet 413. By rotating the adjusting screw 206, the compression stroke of the spring 209 is adjusted, thereby regulating the pressure of the mist inlet 413. This ensures the stability of the pressure within the air chamber 412 and enables mist backflow, improving the performance.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. An atomization treatment device for aluminum alloy profile extrusion production, characterized in that: The device includes a quenching chamber, an atomization treatment mechanism, an ultrasonic atomizer, a water circulation mechanism, a nitrogen storage tank, an air pump, an air pipe, a first switch valve, a second switch valve, a water pump, an inlet pipe, an outlet pipe, and a fan. The quenching chamber has a quenching cavity, and the quenching chamber has an inlet and an outlet communicating with the quenching cavity. The quenching cavity is surrounded by a mounting frame, and the atomization treatment mechanism is mounted on the mounting frame. The top of the quenching chamber has a through hole, and the fan is located at the through hole. The bottom of the quenching chamber has a water storage tank, and the quenching chamber has a drain outlet communicating with the water storage tank. The drain outlet is connected to the inlet of the water circulation mechanism through an outlet pipe. The atomizing mechanism includes a plurality of media adjustment units and nozzles disposed on each media adjustment unit. The media adjustment unit includes a housing, and the housing has an air chamber. The housing is provided with an atomizing inlet, a first air inlet, a second air inlet, and an air outlet communicating with the air chamber. The nozzle is rotatably disposed at the air outlet. The water outlet of the water circulation mechanism is connected to the mist inlet of each medium regulating unit through the water inlet pipe. The ultrasonic atomizer and water pump are respectively installed on the water inlet pipe. The nitrogen storage tank is connected to the first air inlet and the second air inlet through the air pipe. The air pump is installed on the air pipe. The first switch valve and the second switch valve are respectively installed at the first air inlet and the second air inlet.

2. The atomization treatment device for aluminum alloy profile extrusion production according to claim 1, characterized in that: The nozzle includes a sidewall with an annular structure and an end face located at one axial end of the sidewall. The end face is provided with a plurality of jet holes arranged in a matrix. A plurality of air guide grooves with an arc-shaped structure are provided on the outer side of the sidewall. The air guide grooves are connected to the second air inlet.

3. The atomization treatment device for aluminum alloy profile extrusion production according to claim 1 or 2, characterized in that: The housing includes a first housing, a second housing, a third housing, and an annular rotating cover. The second housing is threaded to one axial end of the first housing. The mist inlet is located on the other axial end of the first housing. The first air inlet is located on the circumferential surface of the second housing. The third housing is snapped onto the other axial end of the second housing and is locked to the second housing by the annular rotating cover. The second air inlet is located on the circumferential surface of the third housing. The air outlet is located on one axial end of the third housing away from the second housing. The nozzle is snapped onto the air outlet.

4. The atomization treatment device for aluminum alloy profile extrusion production according to claim 3, characterized in that: The other end of the second housing has an extension extending along its axial direction, and an air guide channel is formed between the extension and the second housing, and the air guide channel is in communication with the air chamber.

5. The atomization treatment device for aluminum alloy profile extrusion production according to claim 4, characterized in that: The housing is equipped with an anti-backflow component to prevent fog from flowing back through the fog inlet.

6. The atomization treatment device for aluminum alloy profile extrusion production according to claim 5, characterized in that: The anti-backflow component is movably connected to the housing via a connecting frame.

7. The atomization treatment device for aluminum alloy profile extrusion production according to claim 6, characterized in that: The anti-backflow assembly includes a mounting plate bolted to the connecting frame, a guide sleeve fixed to the mounting plate, a first vent hole on the guide sleeve, a second vent hole on the mounting plate and located around the guide sleeve, an adjusting screw threaded to the mounting plate, a top plate on the adjusting screw, a sphere inside the guide sleeve, and a spring between the sphere and the top plate. The central axis of the guide sleeve coincides with the central axis of the mist inlet.

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