Efficient energy-saving ceramic sintering hot air spray tower

Abstract

The utility model relates to spray drying tower technical field, concretely is a kind of high -efficient energy -conserving ceramic sintering hot air spray tower, for solving the short time of slurry in tower, the problem of low energy utilization rate and uneven drying caused by insufficient heat exchange. The spray tower includes tower body, and the inner wall of tower body is obliquely installed multilayer deflector plate by fixed assembly, and the inclination angle of deflector plate is 15°-30°, and the residence time is increased by extending slurry flow path;Triangular vortex generator is detachably arranged at the bottom end of deflector plate, and vortex is formed when slurry flows to strengthen mixing. Fixed assembly includes tower wall mounting hole, external mounting plate and extended plate with counterbore and bending part, and the quick disassembly of deflector plate is realized by bolt and nut fastening;Vortex generator is inserted in deflector plate insertion hole by interference, and is positioned by cooperating with the limiting hole of mounting hole upper limit. The above structure makes the contact time of slurry and hot air significantly extended, improves heat exchange efficiency, reduces energy consumption, and facilitates maintenance and replacement of deflector plate and vortex generator.

Description

Technical Field

[0001] This utility model relates to the field of spray drying tower technology, and in particular to a high-efficiency and energy-saving ceramic sintering hot air spray tower. Background Technology

[0002] In the ceramics production industry, ceramic sintering hot air spray towers are key drying equipment. Their performance directly affects the quality and production efficiency of ceramic products, as well as energy consumption and production costs.

[0003] Existing ceramic sintering hot air spray towers generally suffer from low energy efficiency during operation. Due to the short residence time of the slurry in the tower, the hot air and slurry fail to fully contact and exchange heat, resulting in a large amount of heat energy being discharged with the exhaust gas without being effectively utilized, causing energy waste. This not only increases production costs but also does not conform to the current industrial development trend of energy conservation and emission reduction.

[0004] Moreover, traditional spray towers also have shortcomings in drying effect. The slurry is unevenly distributed in the tower, resulting in some slurry being over-dried and others not drying sufficiently, which in turn affects the overall quality of ceramic products, such as uneven moisture content and inconsistent particle size, thus reducing the yield rate of products. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the short residence time of the slurry in the tower body and the failure of hot air and slurry to fully contact and exchange heat, and to propose a high-efficiency and energy-saving ceramic sintering hot air spray tower.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency and energy-saving ceramic sintering hot air spray tower, comprising:

[0008] tower body;

[0009] A fan is located at the top of the tower and connected to an external hot air source;

[0010] A high-pressure rotary spray gun is located at the top of the tower body and connected to the slurry pump;

[0011] Multi-layer guide plates are installed at an angle on the inner wall of the tower body via a fixing assembly to extend the residence time of the slurry in the tower body;

[0012] A vortex generator, detachably mounted on the inclined bottom end of the guide plate, is triangular in shape and forms vortices as the slurry flows through it to further extend the residence time.

[0013] As a further improvement to the above technical solution:

[0014] The fixing component includes mounting holes formed on the outer wall of the tower body and mounting plates detachably connected to the outer wall of the tower body;

[0015] The outer side of the guide plate is fixedly connected to the inner side of the mounting plate through the mounting hole.

[0016] The outer wall of the mounting plate is welded with an extension plate, and a bending part is provided on its outer side;

[0017] Both the extension plate and the bending section are provided with countersunk holes, and bolts are inserted through the countersunk holes and fastened with nuts.

[0018] The top of the guide plate has an insertion hole, the insertion block is interference-fitted into the insertion hole, and the vortex generator is fixedly connected to the top of the insertion block.

[0019] The mounting hole is provided with a limiting hole that matches the shape of the vortex generator.

[0020] The tilt angle of the guide plate is 15°-30°.

[0021] The contact surface between the mounting plate and the outer wall of the tower body is provided with positioning protrusions.

[0022] A high-temperature resistant sealant layer is applied between the insert block and the insertion hole.

[0023] Beneficial effects:

[0024] In this utility model, a high-efficiency and energy-saving ceramic sintering hot air spray tower has multiple layers of inclined guide plates connected to the inner wall of the tower by a fixed component. When the slurry flows in the tower, the guide plates guide it, causing the slurry to flow along its inclined direction, which prolongs the residence time of the slurry and allows for more sufficient contact time between the slurry and the hot air. This significantly improves the heat exchange efficiency, thereby reducing energy consumption and achieving the goal of high efficiency and energy saving.

[0025] In this utility model, the high-efficiency and energy-saving ceramic sintering hot air spray tower has a vortex generator that creates a vortex shape, which causes the slurry to generate a strong stirring and mixing effect in a local area. This further increases the contact area and contact time between the slurry and the hot air, allowing the moisture in the slurry to evaporate more quickly and improving the drying efficiency.

[0026] In this utility model, the high-efficiency and energy-saving ceramic sintering hot air spray tower has a fixed component including mounting holes on the outer wall of the tower body corresponding to the number of guide plates, mounting plates corresponding to the mounting holes are detachably connected to the outer wall of the tower body, and the outer side of the guide plates is welded to the mounting plates through the mounting holes. When the guide plates need to be maintained or replaced, the guide plates can be removed simply by removing the mounting plates, which simplifies the maintenance process and reduces maintenance time and cost.

[0027] In this utility model, a high-efficiency and energy-saving ceramic sintering hot air spray tower has an insertion hole on the top of the guide plate, into which an insertion block is interference-fitted. A vortex generator is welded to the top of the insertion block. At the same time, the mounting hole is provided with a limiting hole that matches the vortex generator, making the installation and disassembly of the vortex generator more convenient. When the vortex generator needs to be replaced, it can be disassembled simply by pulling out the insertion block. During installation, the insertion block is inserted into the insertion hole and ensured to match the limiting hole. This reduces production downtime caused by equipment maintenance and improves the continuity and stability of production.

[0028] In this invention, the combination of an inclined guide plate on the inner wall of the tower and a detachable vortex generator significantly extends the residence time of the slurry inside the tower, allowing the slurry to fully contact the hot air, significantly improving heat exchange efficiency, reducing energy consumption, and achieving high efficiency and energy saving. The detachable mounting plate and bolt and nut fastening structure, as well as the convenient connection method between the vortex generator and the guide plate, facilitate the installation, maintenance and replacement of components such as the guide plate, reducing equipment downtime. Attached Figure Description

[0029] Figure 1 This is a cross-sectional structural diagram of a high-efficiency and energy-saving ceramic sintering hot air spray tower proposed in this utility model.

[0030] Figure 2 This is a schematic diagram of the tower structure of a high-efficiency and energy-saving ceramic sintering hot air spray tower proposed in this utility model.

[0031] Figure 3 This is a schematic diagram of the connecting plate and mounting wing structure of a high-efficiency and energy-saving ceramic sintering hot air spray tower proposed in this utility model.

[0032] Figure 4 This is a schematic diagram of the vortex generator and guide plate structure of a high-efficiency and energy-saving ceramic sintering hot air spray tower proposed in this utility model.

[0033] In the diagram: 1. Tower body; 2. Fan; 3. High-pressure rotary spray gun; 4. Mounting plate; 5. Guide plate; 6. Vortex generator; 7. Mounting hole; 8. Limiting hole; 9. Extension plate; 10. Bending section; 11. Countersunk hole; 12. Bolt; 13. Nut; 14. Insert block; 15. Insert hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In one embodiment, reference is made to... Figures 1-4A spray tower comprises: a tower body 1, a fan 2, a high-pressure rotary spray gun 3, a guide plate 5, a vortex generator 6, and fixing components for fixing the guide plate 5. The tower body 1, as the main supporting structure of the entire spray tower, is a cylindrical structure with a diameter of 3.2 meters and a total height of 18 meters, made of Q345R pressure vessel steel plate rolled and welded to ensure stable operation under high temperature and high pressure environments. The cylindrical shape of the tower body 1 facilitates the uniform distribution of hot air and the flow of the slurry.

[0036] An axial flow fan 2 is connected to the top of tower body 1 via a flange. The fan impeller has a diameter of 800mm and is equipped with a Y2-315M-4 type 132kW explosion-proof motor. The design air volume range is 8000-12000m³. 3 The fan operates at a speed of 5-50Hz, with stepless speed regulation achieved via a frequency converter. Fan 2 is connected to an external hot air source, which can be hot air generated by an industrial boiler or a specially designed hot air generator. The temperature of the hot air is adjusted according to the process requirements of ceramic sintering, generally between 300℃ and 500℃.

[0037] The high-pressure rotary spray gun 3 is also installed at the top of the tower body 1 and connected to the slurry pump via a pipeline. The slurry pump delivers the ceramic slurry to the high-pressure rotary spray gun 3, which is made of 316L stainless steel. The spray gun body is equipped with a dual-fluid atomizing nozzle, and the feed pipeline is equipped with a G-type single screw pump as the power source for slurry delivery, with a rated working pressure of 12MPa and a maximum delivery viscosity of 5000mPa·s. The high-pressure rotary spray gun 3 uses high-pressure gas (usually compressed air, with a pressure between 0.5MPa and 2MPa) to atomize the slurry into tiny droplets, which are then sprayed into the tower body 1. The atomization angle of the high-pressure rotary spray gun 3 can be adjusted according to actual needs and is arranged at a 90° angle with the fan to ensure that the slurry is evenly distributed within the tower body 1.

[0038] The inner wall of the tower body 1 is connected to multiple layers of guide plates 5 via fixed components. The guide plates 5 are made of high-temperature and corrosion-resistant materials, such as ceramic fiber reinforced composite materials. The guide plates 5 are inclined, with an inclination angle between 15° and 30°. The function of the guide plates 5 is to guide the slurry, causing it to flow along the inclined direction of the guide plates 5 within the tower body 1, thereby increasing the residence time of the slurry within the tower body 1. The length and width of the guide plates 5 are determined according to the inner diameter and height of the tower body 1; the length is 0.8-1.2 times the inner diameter of the tower body 1, and the width is 200mm-500mm.

[0039] The fixing assembly includes mounting holes 7 formed on the outer wall of the tower body 1, the number of which corresponds to the number of guide plates 5. The diameter of the mounting holes 7 is designed according to the size of the guide plates 5 to facilitate the installation of the guide plates 5.

[0040] The outer wall of the tower body 1 is welded with a mounting plate 4 corresponding to the mounting hole 7, and the flow guide plate 5 is welded to one side of the mounting plate 45.

[0041] A vortex generator 6 is detachably mounted on the inclined bottom end of the guide vane 5. The vortex generator 6 is triangular (or airfoil-shaped) and made of a high-temperature resistant and wear-resistant material, such as silicon carbide ceramic. An insertion hole 15 is provided on the top of the guide vane 5. The diameter of the insertion hole 15 is designed according to the size of the insert block 14 to achieve an interference fit. The insert block 14 is made of the same material as the guide vane 5, and the vortex generator 6 is welded to the top of the insert block 14. When installing the vortex generator 6, the insert block 14 is inserted into the insertion hole 15 of the guide vane 5, and the insert block 14 is firmly fixed to the guide vane 5 through an interference fit.

[0042] This application can be used in the field of spray drying towers, or in other fields applicable to this application.

[0043] In another embodiment, reference Figures 1-4 A high-efficiency and energy-saving ceramic sintering hot air spray tower is applied in the field of spray drying towers. The outer wall of the tower body 1 is detachably connected to a mounting plate 4 corresponding to the mounting holes 7. The mounting plate 4 is made of the same material as the tower body 1. An extension plate 9 corresponding to the mounting plate 4 is welded to the outer wall of the tower body 1. A bending portion 10 is provided on the outer side of the mounting plate 4. Countersunk holes 11 are provided on both the extension plate 9 and the bending portion 10. The diameter of the countersunk holes 11 is designed according to the specifications of the bolts 12. A positioning protrusion is provided between the mounting plate 4 and the tower body 1 to facilitate positioning during installation.

[0044] When installing the guide plate 5, first weld the guide plate 5 to the mounting plate 4. Argon arc welding is used to ensure welding quality. Then, pass the guide plate 5 through the mounting hole 7 on its outer side. Next, attach the extension plate 9 and the bent portion 10 on the mounting plate 4 to the outer wall of the tower body 1. Secure the mounting plate 4 to the outer wall of the tower body 1 using bolts 12 and nuts 13. High-strength bolts 12 are used, and their specifications are selected according to the actual stress conditions. Nuts 13 are used in conjunction with bolts 12. Tightening the nuts 13 ensures a tight connection between the mounting plate 4 and the outer wall of the tower body 1, facilitating the installation, disassembly, and maintenance of the guide plate 5. When the guide plate 5 is damaged or needs replacement, simply loosen the nuts 13 and remove the mounting plate 4 and the guide plate 5.

[0045] Meanwhile, a limiting hole 8 adapted to the vortex generator 6 is provided on the mounting hole 7. The shape and size of the limiting hole 8 match the shape and size of the vortex generator 6 to ensure the accurate positioning of the vortex generator 6 during installation and to provide offset support for the vortex generator 6. This facilitates the installation and disassembly of the vortex generator 6. When the slurry passes through the vortex generator 6, it forms a vortex at the tail end of the vortex generator 6, further increasing the residence time of the slurry in the tower body 1. By increasing the residence time of the slurry in the tower body 1, the slurry can fully contact the hot air, improving heat exchange efficiency and thus achieving the goal of high efficiency and energy saving.

[0046] Work process

[0047] Hot air introduction: Start fan 2 to introduce external hot air into tower 1. The hot air forms an upward airflow inside tower 1, providing a heat source for drying the slurry.

[0048] Slurry atomization and injection: Start the slurry pump to deliver the ceramic slurry to the high-pressure rotary spray gun 3. The high-pressure rotary spray gun 3 uses high-pressure gas to atomize the slurry into tiny droplets, which are then sprayed into the tower body 1. The atomized slurry is evenly distributed within the tower body 1, making initial contact with the rising hot air.

[0049] Slurry Flow and Drying: The atomized slurry flows along the inclined direction of the guide plate 5 inside the tower body 1. During the flow, the slurry exchanges heat fully with the hot air, and the moisture gradually evaporates. The inclined design of the guide plate 5 makes the flow path of the slurry in the tower body 1 longer, increasing the residence time of the slurry in the tower body 1.

[0050] Vortex Formation and Further Drying: As the slurry passes through vortex generator 6, a vortex is formed at the tail end of vortex generator 6. The formation of the vortex causes strong stirring and mixing of the slurry in a local area, further increasing the contact area and contact time between the slurry and the hot air, and improving the heat exchange efficiency. After being fully dried, the ceramic particles are discharged from the bottom of the tower 1 under the action of gravity, completing the ceramic sintering hot air spray drying process.

[0051] When maintenance is required on the guide plate 5 and the vortex generator 6, the bolt 12 and nut 13 can be separated, the bent part 10 can be removed from the countersunk hole 11, and the mounting plate 4 can be pulled outward to separate the corresponding mounting holes 7 and limiting holes 8 of the guide plate 5 and the vortex generator 6, making it convenient for maintenance and replacement.

[0052] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving ceramic sintering hot air spray tower, characterized in that, include: Tower body (1); A fan (2) is located at the top of the tower body (1) and is connected to an external hot air source; A high-pressure rotary spray gun (3) is located at the top of the tower body (1) and connected to the slurry pump; Multi-layer guide plates (5) are installed at an angle on the inner wall of the tower body (1) by means of a fixing component, in order to extend the residence time of the slurry in the tower body (1); The vortex generator (6) is detachably mounted on the inclined bottom end of the guide plate (5), and is triangular in shape. It forms a vortex when the slurry flows through to further prolong the residence time.

2. The ceramic sintering hot air spray tower according to claim 1, characterized in that, The fixing component includes a mounting hole (7) opened on the outer wall of the tower body (1) and a mounting plate (4) detachably connected to the outer wall of the tower body (1). The outer side of the guide plate (5) is fixedly connected to the inner side of the mounting plate (4) through the mounting hole (7).

3. The ceramic sintering hot air spray tower according to claim 2, characterized in that, The outer wall of the mounting plate (4) is welded with an extension plate (9), and a bending part (10) is provided on its outer side. Both the extension plate (9) and the bending part (10) are provided with countersunk holes (11), and bolts (12) are inserted through the countersunk holes (11) and fastened by nuts (13).

4. The ceramic sintering hot air spray tower according to claim 1, characterized in that, The top of the guide plate (5) is provided with a socket (15), the plug (14) is interference-fitted into the socket (15), and the vortex generator (6) is fixedly connected to the top of the plug (14).

5. The ceramic sintering hot air spray tower according to claim 2, characterized in that, The mounting hole (7) is provided with a limiting hole (8) that is adapted to the shape of the vortex generator (6).

6. The ceramic sintering hot air spray tower according to any one of claims 1-5, characterized in that, The tilt angle of the guide plate (5) is 15°-30°.

7. The ceramic sintering hot air spray tower according to claim 2, characterized in that, The contact surface between the mounting plate (4) and the outer wall of the tower body (1) is provided with positioning protrusions.

8. The ceramic sintering hot air spray tower according to claim 4, characterized in that, A high-temperature resistant sealant layer is coated between the plug (14) and the socket (15).

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