Water atomization device for metal processing

Abstract

The invention relates to the technical field of water atomization, and discloses a metal processing water atomization device which comprises a box body. The interior of the box body is divided into an air passing cavity and a cooling cavity through a partition plate, a hopper located in the air passing cavity is installed on the partition plate, a discharging hole penetrating through the partition plate is formed in the bottom of the hopper, and an annular water spraying piece located below the discharging hole is installed at the bottom of the partition plate. The hopper divides the air passing cavity into a first area and a second area, an air inlet communicated with the first area is formed in the partition plate, and an air passing groove which is transversely formed and communicated with the first area and the second area is formed in the inner wall of the box body. The hopper is subjected to heat preservation through mist waste heat generated by cooling of molten metal, the mist retention time is delayed through the air passing adjusting piece and the exhaust control piece, heat exchange is prolonged, the motor drives the axial flow paddle to actively guide mist and stir particles in the drainage pipe, bonding is prevented, and multiple functions are achieved.

Description

Technical Field

[0001] This invention relates to the field of water atomization technology, and more particularly to a water atomization device for metal processing. Background Technology

[0002] In the production of metal powder, the metal raw material is usually first heated to a molten state in a smelting furnace. Then, the molten metal is poured into a water atomizing device. During the atomization process, a high-pressure water jet impacts the metal liquid column at a specific angle. The kinetic energy of the water is transferred to the metal liquid, causing disturbance on the surface of the liquid column and forming a wave-like structure. Under the combined action of the shear force and aerodynamic force of the high-speed water flow, the wave-like liquid film is torn into tiny droplets. Modern equipment mostly uses annular or conical atomizing nozzles. By optimizing the flow velocity distribution and impact angle of the water flow, a stable turbulent field is formed in the atomization area, further improving the uniformity of atomization. The broken metal droplets then enter the atomizing cylinder filled with water mist or water bath, where they come into direct contact with a large amount of cooling water and undergo heat exchange. The droplets solidify in a short time to form solid metal powder. The solidified metal powder is mixed with water to form a slurry, which enters the collection system with the water flow, completing the metal powder preparation process.

[0003] In the initial stage of molten metal entering the water atomization device, it is first guided into the hopper at the top of the device and flows downward along the hopper. Subsequently, nozzles arranged inside the device spray high-pressure water onto the flowing molten metal to achieve rapid atomization and cooling. However, at the moment the high-pressure water comes into contact with the high-temperature molten metal, a large amount of water mist is generated and rises rapidly and disperses. Although water atomization devices are usually equipped with mist exhaust channels to maintain internal airflow balance, the rising water mist carries away a large amount of heat during its dissipation. As a transition zone before the molten metal enters the atomization area, the temperature of the melt inside the hopper needs to be maintained within a certain range to avoid pre-solidification due to excessive heat loss, which would affect the atomization effect and powder quality. Existing water atomization devices do not have a structure to allow the water mist to slowly pass through the area around the hopper. The rapid diffusion of the water mist means that the heat it carries cannot be effectively utilized, resulting in a waste of thermal energy. It is also not conducive to maintaining the temperature stability of the molten metal in the hopper, increasing the risk of pre-solidification of the molten metal due to excessive heat loss.

[0004] To address the aforementioned problems, this application proposes a water atomization device for metal processing. Summary of the Invention

[0005] This invention proposes a water atomization device for metal processing, which solves the problems in related technologies where the water mist generated by high-pressure water atomization in the water atomization device rises and diffuses rapidly, carrying away a large amount of heat, resulting in heat loss of molten metal in the hopper, risk of pre-solidification, and serious waste of thermal energy.

[0006] The present invention provides a water atomizing device for metal processing, comprising a housing;

[0007] The box is divided into an air passage chamber and a cooling chamber by a partition. A hopper is installed on the partition and located in the air passage chamber. A discharge hole that passes through the partition is opened at the bottom of the hopper. An annular water spray component is installed at the bottom of the partition and located below the discharge hole.

[0008] The hopper divides the air passage chamber into a first area and a second area. An air inlet communicating with the first area is provided on the partition. The inner wall of the box is provided with horizontally arranged air passage grooves communicating with the first area and the second area respectively. An air passage regulating component located in the first area is installed in the air passage groove, and the air passage regulating component is used to adjust the flow rate of mist entering the second area.

[0009] The top of the housing is connected to an exhaust control unit that communicates with the second area.

[0010] As a further optimization of the present invention, the air passage adjustment component includes an air passage shell and an adjustment part. The air passage shell is installed in the air passage groove and placed in the first region. A through air passage is opened in the air passage shell, and multiple air inlets are arranged at intervals and connected to the air passage on the side of the air passage shell. The adjustment part is used to move in the air passage in the air passage shell to open the corresponding air inlets.

[0011] As a further optimization of the present invention, the adjustment part includes a blocking block and a cylinder. The blocking block is inserted into the air passage of the air passage shell, and the cylinder is installed on the side of the housing. The blocking block is connected to the cylinder and is driven by it to move in and out of the air passage shell to open the corresponding air inlet.

[0012] As a further optimization of the present invention, the exhaust control component includes an exhaust pipe connected to the top of the housing and communicating with the second area, and a control valve is installed on the exhaust pipe.

[0013] As a further optimization of the present invention, a guide is installed inside the box to pass through the air inlet and guide the mist into the first area.

[0014] As a further optimization of the present invention, the guide includes a motor, which is installed at the bottom of the housing. The output end of the motor is connected to a rotating rod that passes through the air inlet. An axial flow blade is installed at the top of the rotating rod above the air inlet, and the axial flow blade is located in a first region.

[0015] As a further optimization of the present invention, a drain pipe is connected to one side of the bottom of the box, an L-shaped plate is fixed to the inner wall of one side of the bottom of the box, and the rotating rod rotates through the L-shaped plate. A flow-through area is formed between the bottom of the L-shaped plate and the bottom of the box, and an agitation area is formed inside the L-shaped plate. An agitator rod located in the agitation area is connected to the rotating rod.

[0016] As a further optimization of the present invention, a valve for controlling the drainage flow rate is installed on the drain pipe.

[0017] As a further optimization of the present invention, the annular water spray component includes an annular pipe, which is installed at the bottom of the partition plate. An annular opening is formed in the middle of the annular pipe below the discharge hole. A plurality of nozzles arranged circumferentially and facing the central area are connected to the bottom of the annular pipe. An inlet pipe is connected to the outer periphery of the annular pipe, and the inlet pipe is used to connect to a water pump.

[0018] The above-described technical solution of the present invention has the following beneficial technical effects:

[0019] 1. In use, molten metal is poured into the hopper, and then falls into the cooling chamber inside the box through the discharge hole at the bottom of the hopper. During the fall of the molten metal, high-pressure water is sprayed into the molten metal in a mist form by the annular water spray device, which impacts and cools it, causing it to fall as droplets. The mist generated in this process enters the first area through the air inlet on the partition and comes into contact with the hopper, which can heat the hopper and maintain the temperature inside the hopper. The mist entering the first area can enter the second area through the air passage groove inside the box. During this process, the flow rate of the mist entering the second area can be adjusted by the air passage regulator in the air passage groove located in the first area, which can make the mist enter the second area slowly, prolonging the residence time of the mist in the first area and the second area. Then, the flow rate of the mist discharged from the second area is controlled by the exhaust control device. The above design controls the flow rate of the mist entering the second area through the air passage regulator, so that the mist passes slowly around the hopper, prolongs the heat exchange time, effectively utilizes the residual heat of the mist to keep the hopper warm, reduces the risk of pre-solidification of the molten metal, and reduces heat energy waste.

[0020] 2. In practical use, in order to better guide the mist in the cooling chamber into the first area, the motor in the guide can drive the rotating rod to rotate. The rotating rod drives the axial flow blades located in the first area to rotate, which can guide the mist in the cooling chamber into the first area through the air inlet. The above design uses the motor in the guide to drive the axial flow blades to rotate, actively sucking the mist in the cooling chamber into the first area, enhancing the contact efficiency between the mist and the hopper, and further improving the heat recovery and hopper insulation effect;

[0021] 3. When the cooled mixture of granular metal and water is discharged through the drain pipe, the motor drives the rotor to rotate the axial flow blades. The stirring rod on the rotor agitates the mixture of granular metal and water during the discharge process, breaking up any granular metal particles that are stuck together. The above design utilizes the same motor and rotor drive system to achieve the mist guiding function while simultaneously stirring and breaking up the discharged mixture of granular metal and water through the stirring rod. This effectively prevents the agglomeration of granular metal, improves the dispersibility and uniformity of the powder product, and realizes the multi-functional reuse of the structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a water atomization device for metal processing proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention;

[0024] Figure 3 For the present invention Figure 2 A front view of the entire structure;

[0025] Figure 4 This is a schematic diagram of the airflow regulating component in this invention;

[0026] Figure 5 This is a schematic diagram of the guide component in this invention;

[0027] Figure 6 This is a schematic diagram of the annular water spray component in this invention.

[0028] Reference numerals: 1. Box body; 101. Baffle plate; 1011. Air inlet; 102. Hopper; 103. Air passage groove; 104. L-shaped plate; 2. Annular water spray component; 21. Annular pipe; 211. Nozzle; 22. Water inlet pipe; 3. Air passage regulating component; 31. Air passage shell; 311. Air inlet hole; 32. Adjusting part; 321. Blocking block; 322. Cylinder; 4. Guide component; 41. Motor; 42. Rotating rod; 43. Axial flow blade; 44. Stirring rod; 5. Exhaust control component; 51. Exhaust pipe; 52. Control valve; 6. Drain pipe; 61. Valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0030] like Figure 1-6As shown, the present invention provides a water atomizing device for metal processing, comprising a housing 1;

[0031] The box 1 is divided into an air passage chamber and a cooling chamber by a partition 101. A hopper 102 located in the air passage chamber is installed on the partition 101. A discharge hole penetrating the partition 101 is opened at the bottom of the hopper 102. An annular water spray component 2 located below the discharge hole is installed at the bottom of the partition 101.

[0032] The hopper 102 divides the air passage chamber into a first area and a second area. An air inlet 1011 communicating with the first area is provided on the partition 101. The inner wall of the box 1 is provided with horizontally arranged air passage grooves 103 that communicate with the first area and the second area respectively. An air passage regulating component 3 located in the first area is installed in the air passage groove 103, and the air passage regulating component 3 is used to regulate the flow rate of mist entering the second area.

[0033] The top of the housing 1 is connected to an exhaust control unit 5 that communicates with the second area.

[0034] Molten metal is poured into hopper 102 and falls into the cooling chamber through the discharge hole. The annular water sprayer 2 sprays high-pressure water in a mist onto the molten metal for impact cooling, forming droplets. The mist generated during this process enters the first area through the air inlet 1011 and comes into contact with hopper 102, serving to heat and keep the temperature, reducing the risk of pre-solidification of the molten metal. Subsequently, the mist enters the second area through the air passage 103. The air passage regulator 3 controls the flow rate of the mist into the second area, extending the residence time of the mist in the first and second areas, effectively utilizing the waste heat of the mist. Finally, the exhaust control 5 controls the discharge flow rate of the mist in the second area, maintaining the airflow balance inside the device. This structural design realizes the integrated operation of atomization and waste heat recovery, forming a complete mist waste heat utilization system from spatial separation to flow control, effectively solving the problems of heat energy waste and molten metal pre-solidification in traditional devices.

[0035] In this embodiment, the air passage adjustment component 3 includes an air passage shell 31 and an adjustment part 32. The air passage shell 31 is installed in the air passage groove 103 and placed in the first region. A through air passage channel is opened in the air passage shell 31, and multiple air inlets 311 are arranged at intervals and communicate with the air passage channel on the side of the air passage shell 31. The adjustment part 32 is used to move in the air passage in the air passage of the air passage shell 31 and open the corresponding air inlets 311.

[0036] The regulating unit 32 moves within the air passage of the air shell 31. By changing its position within the passage, it opens and closes different numbers of air inlets 311, thereby regulating the flow rate of mist entering the air passage. When the regulating unit 32 closes more air inlets 311, the flow rate of mist entering the passage decreases, the residence time of mist in the first area is extended, and the heat exchange with the hopper 102 is more thorough. When the regulating unit 32 opens more air inlets 311, the flow rate of mist increases, and the air pressure in the cavity can be quickly regulated. The above can control the flow rate of mist, optimize the heat exchange process, and improve the efficiency of the device.

[0037] In this embodiment, the adjustment unit 32 includes a blocking block 321 and a cylinder 322. The blocking block 321 is inserted into the air passage of the air passage shell 31, and the cylinder 322 is installed on the side of the housing 1. The blocking block 321 is connected to the cylinder 322 and is driven by it to enter and exit the air passage shell 31 to open the corresponding air inlet 311.

[0038] When cylinder 322 extends, it pushes block 321 to move into the air passage, blocking more air inlets 311 and reducing mist flow. When cylinder 322 retracts, it pulls block 321 to move out of the air passage, opening more air inlets 311 and increasing mist flow. The above can realize rapid adjustment of mist flow, meeting the dynamic adjustment requirements of internal pressure and heat exchange efficiency during the atomization operation of the device.

[0039] In this embodiment, the exhaust control component 5 includes an exhaust pipe 51, which is connected to the top of the housing 1 and communicates with the second area. A control valve 52 is installed on the exhaust pipe 51.

[0040] When the device needs to improve the utilization rate of waste heat from the mist, the opening degree of the control valve 52 is reduced to decrease the mist discharge flow rate and slow down the dissipation speed of the mist in the second area and the entire air passage, so that the waste heat of the mist can be fully utilized. When the air pressure in the air passage of the device is too high, affecting the atomization operation of the cooling chamber, the opening degree of the control valve 52 is increased to accelerate the discharge of mist and quickly balance the internal pressure of the chamber. The setting of the control valve 52 makes the exhaust operation of the device controllable, forming a dual flow control with the air passage regulator 3, realizing the regulation of the mist flow rate and the internal pressure of the chamber, ensuring the coordinated and stable operation of the device's atomization operation and waste heat recovery operation. Moreover, the control valve 52 is easy to operate and can be adjusted in real time according to the actual operation requirements.

[0041] In this embodiment, a guide 4 is installed inside the housing 1, which passes through the air inlet 1011 and guides the mist into the first area. The guide 4 can actively attract and guide the mist in the cooling chamber into the first area through the air inlet 1011, enhance the contact between the mist and the hopper 102, improve the heat recovery efficiency, and enhance the heat preservation effect of the hopper 102.

[0042] In this embodiment, the guide 4 includes a motor 41, which is installed at the bottom of the housing 1. The output end of the motor 41 is connected to a rotating rod 42 that passes through the air inlet 1011. An axial flow blade 43 is installed at the top of the rotating rod 42 above the air inlet 1011, and the axial flow blade 43 is located in the first region.

[0043] When the motor 41 drives the rotating rod 42 to rotate, the axial flow blades 43 rotate synchronously, generating a downward negative pressure suction force. This force actively draws the mist in the cooling chamber into the first area through the air inlet 1011. The rotational flow guiding method of the axial flow blades 43 allows the mist to enter the first area in a directional flow along the air inlet 1011, increasing the flow rate and efficiency of the mist entering the first area. This allows the mist to quickly and fully contact the hopper 102, maximizing heat exchange. At the same time, the rotation of the axial flow blades 43 can drive the airflow in the first area, allowing the mist to diffuse evenly within the first area, preventing localized mist accumulation, further increasing the contact area with the hopper 102, and resulting in better heat preservation.

[0044] In this embodiment, a drain pipe 6 is connected to one side of the bottom of the box 1, an L-shaped plate 104 is fixed to the inner wall of one side of the bottom of the box 1, and the rotating rod 42 rotates through the L-shaped plate 104. A flow-through area is formed between the bottom of the L-shaped plate 104 and the bottom of the box 1, and an agitation area is formed inside the L-shaped plate 104. An agitation rod 44 located in the agitation area is connected to the rotating rod 42.

[0045] When the motor 41 drives the rotating rod 42 to rotate, the stirring rod 44 rotates synchronously to agitate the slurry flowing into the flow area. This can effectively break up the metal powder particles that are stuck together, preventing the metal powder from agglomerating. At the same time, the L-shaped plate 104 can prevent the slurry from splashing when the stirring rod 44 rotates, ensuring the orderly discharge of the slurry.

[0046] In this embodiment, a valve 61 for controlling the drainage flow is installed on the drain pipe 6;

[0047] When it is necessary to fully agitate and disperse the slurry, reduce the opening degree of valve 61 to decrease the slurry discharge flow rate and prolong the residence time of the slurry in the agitation area, so that the agitator 44 agitates the slurry more fully and the dispersion effect is better. When it is necessary to quickly collect the finished slurry, increase the opening degree of valve 61 to speed up the slurry discharge speed and improve production efficiency.

[0048] In this embodiment, the annular water spray component 2 includes an annular pipe 21, which is installed at the bottom of the partition plate 101. An annular opening is formed in the middle of the annular pipe 21, located below the discharge hole. A plurality of nozzles 211 arranged circumferentially and facing the central area are connected to the bottom of the annular pipe 21. A water inlet pipe 22 is connected to the outer periphery of the annular pipe 21, and the water inlet pipe 22 is used to connect to a water pump.

[0049] The water pump pumps high-pressure water into the annular pipe 21 through the water inlet pipe 22. After the high-pressure water enters the annular pipe 21, it is sprayed into the metal liquid column in an all-round annular pattern through multiple nozzles 211, realizing the atomization impact on the metal liquid column, so that the metal liquid column can be uniformly torn into fine droplets, thereby improving the atomization uniformity of the metal powder.

[0050] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A water atomizing device for metal processing, characterized in that, Includes the housing (1); The box (1) is divided into an air passage chamber and a cooling chamber by a partition (101). A hopper (102) located in the air passage chamber is installed on the partition (101). A discharge hole that passes through the partition (101) is opened at the bottom of the hopper (102). An annular water spray component (2) located below the discharge hole is installed at the bottom of the partition (101). The hopper (102) divides the air passage chamber into a first area and a second area. An air inlet (1011) communicating with the first area is provided on the partition (101). The inner wall of the box (1) is provided with horizontally arranged air passage grooves (103) communicating with the first area and the second area respectively. An air passage regulating component (3) located in the first area is installed in the air passage groove (103), and the air passage regulating component (3) is used to regulate the flow rate of mist entering the second area. The top of the housing (1) is connected to an exhaust control unit (5) that communicates with the second area.

2. The metal processing water atomizing device according to claim 1, characterized in that, The air passage adjustment component (3) includes an air passage shell (31) and an adjustment part (32). The air passage shell (31) is installed in the air passage groove (103) and placed in the first region. The air passage shell (31) has a through air passage channel, and the side of the air passage shell (31) has a plurality of spaced air inlets (311) that communicate with the air passage channel. The adjustment part (32) is used to move in the air passage channel in the air passage shell (31) to open the corresponding air inlets (311).

3. The water atomizing device for metal processing according to claim 2, characterized in that, The adjustment unit (32) includes a blocking block (321) and a cylinder (322). The blocking block (321) is inserted into the air passage of the air passage shell (31). The cylinder (322) is installed on the side of the housing (1). The blocking block (321) is connected to the cylinder (322) and driven by it to enter and exit the air passage shell (31) to open the corresponding air inlet (311).

4. The metal processing water atomizing device according to claim 2, characterized in that, The exhaust control unit (5) includes an exhaust pipe (51) connected to the top of the housing (1) and communicating with the second area, and a control valve (52) is installed on the exhaust pipe (51).

5. The water atomizing device for metal processing according to claim 1, characterized in that, The housing (1) is equipped with a guide (4) that passes through the air inlet (1011) and guides the mist into the first area.

6. The water atomizing device for metal processing according to claim 5, characterized in that, The guide (4) includes a motor (41) mounted at the bottom of the housing (1). The output end of the motor (41) is connected to a rotating rod (42) that passes through the air inlet (1011). The top of the rotating rod (42) is equipped with an axial flow blade (43) located above the air inlet (1011), and the axial flow blade (43) is located in the first region.

7. The water atomizing device for metal processing according to claim 6, characterized in that, A drain pipe (6) is connected to one side of the bottom of the box (1). An L-shaped plate (104) is fixed to the inner wall of one side of the bottom of the box (1). A rotating rod (42) rotates through the L-shaped plate (104). A flow-through area is formed between the bottom of the L-shaped plate (104) and the bottom of the box (1). An agitation area is formed inside the L-shaped plate (104). An agitation rod (44) located in the agitation area is connected to the rotating rod (42).

8. The metal processing water atomizing device according to claim 7, characterized in that, A valve (61) for controlling the drainage flow is installed on the drain pipe (6).

9. The water atomizing device for metal processing according to claim 1, characterized in that, The annular water spray component (2) includes an annular pipe (21), which is installed at the bottom of the partition (101). An annular opening is formed in the middle of the annular pipe (21) below the discharge hole. Multiple nozzles (211) arranged circumferentially and facing the central area are connected to the bottom of the annular pipe (21). A water inlet pipe (22) is connected to the outer periphery of the annular pipe (21), and the water inlet pipe (22) is used to connect to a water pump.

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