Liquid zinc atomizing equipment

Abstract

The utility model relates to the technical field of atomization equipment, in particular to liquid zinc atomization equipment. While the zinc liquid outlet quantity can be increased, the zinc liquid can be fully atomized, so that the zinc powder production efficiency is improved; comprising a liquid zinc cup and an atomizing nozzle, wherein the liquid zinc cup is provided with a feeding hole in the upper part and a discharging hole in the lower part; the atomizing nozzle is arranged below the liquid zinc cup and is internally provided with an air cavity with an air inlet in the upper part and a plurality of air outlets in the lower part; the device further comprises a centrifugal throwing disc rotationally installed at the discharging port, a containing cavity communicated with the discharging port is formed in the centrifugal throwing disc, a plurality of throwing openings communicated with the containing cavity are formed in the circumferential outer wall of the centrifugal throwing disc, and a plurality of axial flow blades evenly distributed in the circumferential direction are installed on the circumferential outer wall of the centrifugal throwing disc. The central axis of the air outlet is parallel to the central axis of the centrifugal throwing disc, and the air outlet faces the axial flow blade.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization equipment, in particular to liquid zinc atomization equipment. Background Art

[0002] As we all know, different industries have different requirements for the particle size, shape and purity of zinc powder. The atomization process can control the characteristics of zinc powder by adjusting parameters to meet the needs of different application scenarios. In addition, the atomization method can be produced continuously. Compared with other production methods, its production efficiency is higher, and through continuous technological innovation, such as improving the atomization process and equipment, it can further increase production and reduce costs.

[0003] For example, a Chinese utility model patent discloses an atomizer for preparing metallic zinc powder (publication (announcement) number CN203830730U), which includes a zinc liquid cup with a feed inlet at the top and a discharge outlet at the bottom, and an atomizing nozzle arranged below the zinc liquid cup, which has an air cavity inside, an air inlet at the top of the air cavity, and multiple air outlets at the bottom. The feature of the atomizing nozzle is that a heating element is arranged outside the zinc liquid cup, and each air outlet at the bottom of the atomizing nozzle is arranged as an inclined port with large inner and outer apertures and a small aperture in the middle. It can not only increase the temperature of the zinc liquid and maintain the proper fluidity of the zinc liquid, but also, when the zinc liquid flows out through the discharge outlet, the high-speed gas ejected from the multiple air outlets of the atomizing nozzle with large inner and outer apertures, small aperture in the middle, and an inclination angle of 30 to 50 degrees is broken and cooled into fine zinc powder. And it can be convenient to replace the corresponding atomizer according to different production needs. It has the advantages of small investment, controllable zinc powder particle size, safety, good working conditions, and environmental friendliness. It is also suitable for the atomization of metal zinc powder produced using raw materials such as cathode zinc sheets.

[0004] However, when the inventors implemented this device, they found the following defects: in order to ensure sufficient atomization of the zinc liquid, the aperture of the discharge port needs to be designed to be small, which will affect the outflow rate of the zinc liquid and thus affect the output of zinc powder, and has certain limitations in use. Utility Model Content

[0005] Technical issues

[0006] In view of the deficiencies of the prior art, the utility model provides a liquid zinc atomization device which can increase the outflow rate of zinc liquid and ensure that the zinc liquid is fully atomized, thereby improving the production efficiency of zinc powder.

[0007] Technical Solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid zinc atomization device, comprising a zinc liquid cup with a feed inlet at the top and a discharge outlet at the bottom, and an atomizing nozzle arranged below the zinc liquid cup, wherein the interior of the cup has an air cavity, the upper part of the air cavity has an air inlet, and the lower part of the air cavity has multiple air outlets; and further comprising a centrifugal ejection disk rotatably installed at the discharge outlet, wherein the centrifugal ejection disk has a cavity communicated with the discharge outlet, the circumferential outer wall of the centrifugal ejection disk has multiple ejection outlets communicated with the cavity, a plurality of circumferentially uniformly distributed axial flow blades are installed on the circumferential outer wall of the centrifugal ejection disk, the central axis of the air outlet is parallel to the central axis of the centrifugal ejection disk, and the air outlet faces the axial flow blades.

[0009] As a preferred embodiment, a rotating shaft extending into the discharge port is fixedly installed on the centrifugal separation disk, and a dispersing agitator is fixedly installed on the top of the rotating shaft; further, the dispersing agitator includes a disk body and a plurality of stirring blades circumferentially arranged at the upper and lower circumferential edges of the disk body.

[0010] As a preferred embodiment, a spiral plate heat exchanger is installed in the air cavity, and a first channel and a second channel arranged in a spiral are provided in the spiral plate heat exchanger. A liquid inlet pipe connected to the first channel and a liquid outlet pipe connected to the second channel are provided on the spiral plate heat exchanger, and the first channel and the second channel are connected from the middle of the spiral plate heat exchanger.

[0011] As a preferred solution, a heating tube is coiled around the outer wall of the zinc liquid cup, and the outer wall of the zinc liquid cup is also coated with a heat-insulating layer.

[0012] As a preferred solution, an arc-shaped guide channel connected to the corresponding throwing port is provided in the cavity.

[0013] As a preferred solution, there are at least two groups of air inlets, and the air inlets are evenly distributed around the outer wall of the atomizing nozzle.

[0014] As a preferred solution, a reduced diameter portion is provided in the air outlet.

[0015] As a preferred solution, a cover plate with a middle portion communicating with a discharge port is detachably mounted on the top of the centrifugal ejection disc; further, the cover plate is detachably connected to the centrifugal ejection disc by bolts.

[0016] Beneficial Effects

[0017] Compared with the prior art, the utility model provides a liquid zinc atomization device, which has the following beneficial effects: in the liquid zinc atomization device, the molten zinc in the zinc liquid cup enters into the containing cavity from the discharge port, and after the air inlet is connected with the external pressurized air source, the pressurized air enters into the air cavity, and the pressurized air contacts the axial flow blades to drive the centrifugal throwing disk to rotate, and under the action of the centrifugal force during the rotation of the centrifugal throwing disk, the molten zinc liquid is thrown out from each throwing port at a high speed, and then the molten zinc liquid contacts the axial flow blades in a high-speed rotating state to form molten droplets, and the pressurized air acts on the dispersed molten droplets to further vaporize and disperse the molten droplets, and as the vaporized zinc particles move away from the zinc liquid cup, the vaporized zinc particles gradually cool down and solidify to form zinc powder, and in the process of driving the axial flow blades to rotate, the centrifugal throwing disk forms a vortex below the atomizing nozzle, thereby promoting the aggregation and sedimentation of the solidified zinc powder; while increasing the zinc liquid outflow rate, it ensures that the zinc liquid is fully atomized, thereby improving the zinc powder production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the utility model;

[0020] Figure 3 The utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0021] Figure 4 The utility model Figure 3 Schematic diagram of the cross-section structure at BB in the middle;

[0022] Figure 5 The utility model Figure 3 Schematic diagram of the cross-section structure at CC;

[0023] Markings in the attached figure: 1. feed port; 2. discharge port; 3. zinc liquid cup; 4. air cavity; 5. air inlet; 6. air outlet; 7. atomizing nozzle; 8. centrifugal throwing disc; 9. cavity; 10. throwing port; 11. axial flow blades; 12. rotating shaft; 13. dispersion stirring disc; 14. spiral plate heat exchanger; 15. first channel; 16. second channel; 17. liquid inlet pipe; 18. liquid outlet pipe; 19. heating pipe; 20. insulation layer; 21. arc-shaped guide channel; 22. reduced diameter portion; 23. cover plate. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] As described in the background technology, an atomizer for preparing metallic zinc powder; in order to ensure sufficient atomization of zinc liquid, the aperture of the discharge port needs to be designed to be small, which will affect the outflow rate of zinc liquid and thus affect the output of zinc powder, and has certain limitations in use.

[0026] In order to solve this technical problem, the utility model provides a liquid zinc atomization device, which is used for liquid zinc atomization treatment.

[0027] Specifically, please refer to Figure 1-3 The liquid zinc atomization equipment specifically includes: a zinc liquid cup 3 with a feed port 1 at the top and a discharge port 2 at the bottom, and an atomizing nozzle 7 arranged below the zinc liquid cup 3, with an air cavity 4 therein, an air inlet 5 at the top of the air cavity 4, and a plurality of air outlets 6 at the bottom; and also includes a centrifugal ejection disk 8 rotatably installed at the discharge port 2, wherein the centrifugal ejection disk 8 is provided with a cavity 9 communicated with the discharge port 2, and a plurality of ejection ports 10 communicated with the cavity 9 are provided on the circumferential outer wall of the centrifugal ejection disk 8, and a plurality of circumferentially uniformly distributed axial flow blades 11 are installed on the circumferential outer wall of the centrifugal ejection disk 8, and the central axis of the air outlet 6 is parallel to the central axis of the centrifugal ejection disk 8, and the air outlet 6 faces the axial flow blades 11.

[0028] The utility model provides a liquid zinc atomization device. The molten zinc in the zinc liquid cup 3 enters the containing cavity 9 from the discharge port 2. After the air inlet 5 is connected with the external pressurized air source, the pressurized air enters the air cavity 4. After the pressurized air contacts the axial flow blades 11, the centrifugal throwing disc 8 is driven to rotate. Under the action of the centrifugal force during the rotation of the centrifugal throwing disc 8, the molten zinc liquid is thrown out from each throwing port 10 at a high speed. Subsequently, the molten zinc liquid contacts the axial flow blades 11 in a high-speed rotating state to form molten liquid droplets. The pressurized air acts on the dispersed molten liquid droplets to further vaporize and disperse the molten droplets. As the vaporized zinc particles move away from the zinc liquid cup 3, the vaporized zinc particles gradually cool down and solidify to form zinc powder. In the process of driving the axial flow blades 11 to rotate, the centrifugal throwing disc 8 forms a vortex below the atomizing nozzle 7, thereby promoting the aggregation and sedimentation of the solidified zinc powder. While increasing the zinc liquid outflow rate, the zinc liquid is ensured to be fully atomized, thereby improving the zinc powder production efficiency.

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] Example 1

[0033] Please refer to Figure 3 A liquid zinc atomization device comprises a zinc liquid cup 3 with a feed inlet 1 at the top and a discharge outlet 2 at the bottom, and an atomizing nozzle 7 arranged below the zinc liquid cup 3, wherein the air cavity 4 is provided therein, the air cavity 4 has an air inlet 5 at the top and a plurality of air outlets 6 at the bottom; and further comprises a centrifugal throwing disc 8 rotatably mounted at the discharge outlet 2, wherein a cavity 9 communicating with the discharge outlet 2 is arranged in the centrifugal throwing disc 8, and a plurality of throwing outlets 10 communicating with the cavity 9 are arranged on the circumferential outer wall of the centrifugal throwing disc 8, A plurality of circumferentially evenly distributed axial flow blades 11 are installed on the circumferential outer wall of the centrifugal separation disk 8, the central axis of the air outlet 6 is parallel to the central axis of the centrifugal separation disk 8, and the air outlet 6 faces the axial flow blades 11; a rotating shaft 12 extending into the discharge port 2 is fixedly installed on the centrifugal separation disk 8, and a dispersing agitator 13 is fixedly installed on the top of the rotating shaft 12; further, the dispersing agitator 13 includes a disk body and a plurality of stirring blades circumferentially arranged at the circumferential edges of the upper and lower parts of the disk body.

[0034] The present embodiment provides a liquid zinc atomization device, wherein the centrifugal ejection disk 8 drives the rotating shaft 12 and the dispersion stirring disk 13 to rotate during high-speed rotation, and the dispersion stirring disk 13 can stir the molten zinc liquid in the zinc liquid cup 3 to make the molten zinc liquid in a flowing state, and at the same time promote the various components in the molten zinc liquid to be fully and evenly dispersed, so as to improve the heating uniformity and flowability of the molten zinc, and ensure that the molten zinc is smoothly discharged from the discharge port 2.

[0035] Example 2

[0036] The liquid zinc atomization equipment provided in Example 1 is further optimized, specifically, as follows Figure 3-4 As shown, a spiral plate heat exchanger 14 is installed in the air cavity 4, and a first channel 15 and a second channel 16 arranged in a spiral are provided in the spiral plate heat exchanger 14. A liquid inlet pipe 17 connected to the first channel 15 and a liquid outlet pipe 18 connected to the second channel 16 are provided on the spiral plate heat exchanger 14. The first channel 15 and the second channel 16 are connected from the middle of the spiral plate heat exchanger 14.

[0037] The present embodiment provides a liquid zinc atomization device, wherein the liquid refrigerant is injected into the first channel 15 through the liquid inlet pipe 17. Under the guiding action of the first channel 15, the liquid refrigerant flows in a spiral shape toward the center of the spiral plate heat exchanger 14. Then, the liquid refrigerant enters the second channel 16. Under the guiding action of the second channel 16, the liquid refrigerant flows in a spiral shape toward the liquid outlet pipe 18. Under the action of the spiral plate heat exchanger 14, the residence time of the liquid refrigerant in the limited air cavity 4 space can be extended, thereby improving the absorption efficiency of the liquid refrigerant to the heat in the air cavity 4, ensuring that the air cavity 4 is in a low temperature state, and thus making the airflow ejected from the air outlet 6 in a low temperature state.

[0038] For details, please refer to Figure 3 A heating tube 19 is coiled around the outer wall of the zinc liquid cup 3, and the outer wall of the zinc liquid cup 3 is also covered with an insulation layer 20; the zinc liquid cup 3 can be heated by the heating tube 19, so that the inside of the zinc liquid cup 3 is in a high temperature state to ensure that the zinc liquid in the zinc liquid cup 3 is in a molten flow state, and the insulation layer 20 can reduce heat loss to the outside, reduce the heat loss rate at the zinc liquid cup 3, and be more energy-saving and environmentally friendly.

[0039] For details, please refer to Figure 5 An arc-shaped guide channel 21 connected to the corresponding throwing port 10 is provided in the cavity 9; through multiple arc-shaped guide channels 21, the zinc liquid can be evenly dispersed and centrifugally thrown out. At the same time, the arc-shaped guide channel 21 can extend the path of the zinc liquid to the throwing port 10 to increase the speed of the zinc liquid at the throwing port 10, thereby providing a guarantee for the subsequent atomization of the zinc liquid.

[0040] Specifically, there are at least two groups of air inlets 5, and the air inlets 5 are evenly distributed around the outer wall of the atomizing nozzle 7; by setting multiple groups of air inlets 5, the uniformity of air intake in the air cavity 4 can be improved to ensure the stability of the air flow pressure at each air outlet 6 and avoid uneven air flow distribution at the air outlet 6.

[0041] For details, please refer to Figure 3 , a reduced diameter portion 22 is provided in the air outlet 6; by setting the reduced diameter portion 22, the outflow pressure of the air flow at the air outlet 6 can be increased, so that the air flow contacts the zinc liquid at a high speed, further improving the atomization effect of the zinc liquid.

[0042] For details, please refer to Figure 3 The top of the centrifugal ejection disk 8 is detachably mounted with a cover plate 23 with a middle portion connected to the discharge port 2; further, the cover plate 23 is detachably connected to the centrifugal ejection disk 8 by bolts; by removing the cover plate 23, the inside of the centrifugal ejection disk 8 can be cleaned and maintained, thereby improving the convenience of subsequent maintenance and overhaul.

[0043] The use process of the liquid zinc atomization equipment provided by the utility model is as follows: the zinc liquid is melted under the heating of the heating tube 19, and the molten zinc in the zinc liquid cup 3 enters the containing cavity 9 from the discharge port 2. After the air inlet 5 is connected with the external pressurized air source, the pressurized air enters the air cavity 4. After the pressurized air contacts the axial flow blades 11, the centrifugal throwing disc 8 is driven to rotate. Under the action of the centrifugal force during the rotation of the centrifugal throwing disc 8, the molten zinc liquid passes through the arc guide channel 21 and is thrown out from each throwing port 10 at high speed. Subsequently, the molten zinc liquid contacts the axial flow blades 11 in a high-speed rotating state to form molten droplets. The pressurized air acts on the dispersed molten droplets to further vaporize and disperse the molten droplets. As the vaporized zinc particles move away from the zinc liquid cup 3, the vaporized zinc particles gradually cool down and solidify to form zinc powder. In the process of driving the axial flow impeller to rotate, the centrifugal throwing disc 8 forms a vortex below the atomizing nozzle 7, thereby promoting the aggregation and sedimentation of the solidified zinc powder.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A liquid zinc atomization device, comprising a zinc liquid cup (3) with a feed inlet (1) at the top and a discharge outlet (2) at the bottom, and an atomizing nozzle (7) arranged below the zinc liquid cup (3) and having an air cavity (4) therein, an air inlet (5) at the top of the air cavity (4) and a plurality of air outlets (6) at the bottom; characterized in that: The invention also comprises a centrifugal ejection disc (8) rotatably mounted at the discharge port (2), wherein a cavity (9) communicating with the discharge port (2) is provided in the centrifugal ejection disc (8), a plurality of ejection ports (10) communicating with the cavity (9) are provided on the circumferential outer wall of the centrifugal ejection disc (8), a plurality of axial flow blades (11) uniformly distributed in the circumferential direction are mounted on the circumferential outer wall of the centrifugal ejection disc (8), a central axis of the air outlet (6) is parallel to the central axis of the centrifugal ejection disc (8), and the air outlet (6) faces the axial flow blades (11).

2. The liquid zinc atomization equipment according to claim 1, characterized in that: A rotating shaft (12) extending into the discharge port (2) is fixedly mounted on the centrifugal separation disc (8), and a dispersing stirring disc (13) is fixedly mounted on the top of the rotating shaft (12).

3. The liquid zinc atomization equipment according to claim 2, characterized in that: A spiral plate heat exchanger (14) is installed in the air cavity (4), wherein a first channel (15) and a second channel (16) arranged in a spiral manner are provided in the spiral plate heat exchanger (14), and a liquid inlet pipe (17) communicating with the first channel (15) and a liquid outlet pipe (18) communicating with the second channel (16) are provided on the spiral plate heat exchanger (14), wherein the first channel (15) and the second channel (16) are communicated from the middle of the spiral plate heat exchanger (14).

4. The liquid zinc atomization equipment according to claim 1 or 3, characterized in that: A heating tube (19) is coiled around the outer wall of the zinc liquid cup (3), and the outer wall of the zinc liquid cup (3) is also coated with a heat-insulating layer (20).

5. The liquid zinc atomization equipment according to claim 1, characterized in that: The chamber (9) is provided with an arc-shaped flow-guiding channel (21) which is in communication with the corresponding dispensing port (10).

6. The liquid zinc atomization equipment according to claim 1, characterized in that: The air inlets (5) are at least two groups, and the air inlets (5) are evenly distributed around the outer wall of the atomizing nozzle (7).

7. The liquid zinc atomization equipment according to claim 1, characterized in that: The air outlet (6) is provided with a reduced diameter portion (22).

8. The liquid zinc atomization equipment according to claim 5, characterized in that: The top of the centrifugal ejection disc (8) is detachably provided with a cover plate (23) with a central portion communicating with the discharge port (2).

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