Atomization device for spray dryer

Abstract

The invention discloses an atomization device for a spray dryer, and relates to the technical field of atomization devices.The atomization device comprises a support, a drying tower is fixedly installed on the top face of the support, an air blower is fixedly installed on one side of the support, a heater is fixedly installed on one side of the air blower, and an air supply pipe is arranged on one side of the heater; the other end of the air supply pipe communicates with the interior of the drying tower, a cyclone separator is fixedly installed on one side of the drying tower, and a collecting bottle is fixedly installed on one side of the cyclone separator. The atomization mechanism is arranged on the drying tower and comprises an atomizer, the atomizer is arranged on the top face of the drying tower, and a spray head on the bottom face of the atomizer is located on the top face in the drying tower. The viscosity of the material liquid is accurately controlled and adjusted, and the smooth proceeding of the spray drying process and the quality of the final product are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of atomizing devices, in particular to an atomizing device for a spray dryer. Background Art

[0002] Spray drying is an efficient and widely used drying technology. Its principle is to use an atomizer to disperse liquid materials into countless tiny droplets. These droplets quickly and fully exchange heat and mass with hot air in a specific drying chamber. The surface area of ​​the droplets is greatly increased, which greatly improves the evaporation rate, so that the moisture in the material is quickly vaporized in a short time, and then taken away by the drying medium, usually hot air, to finally obtain a dry product. The atomization device plays a vital role in the spray dryer. It determines the size, shape and distribution of the droplets, thereby affecting the drying rate, product quality and energy efficiency.

[0003] Traditional spray dryers are often designed to rely on fixed material conveying and atomization systems. This model ignores the complexity of the dynamic conveying process of material liquids. The material liquid is often accompanied by changes in concentration gradients, temperature gradients and even pressure gradients on the conveying path. The existence of these gradients profoundly affects the viscosity characteristics of the material liquid. Traditional spray dryers generally lack these key parameters, especially the real-time monitoring and flexible adjustment functions of the material liquid viscosity. When the viscosity of the material liquid increases abnormally due to the above-mentioned gradient effect, first of all, the increase in viscosity directly weakens the atomization effect, resulting in uneven particle size distribution of droplets. Larger droplets are difficult to evaporate effectively in a short time, thereby reducing the overall drying efficiency. This not only prolongs the production cycle, but may also damage the atomization device due to excessive heating. More seriously, high-viscosity material liquids are more likely to form deposition and adhesion inside the equipment during the conveying and atomization process. Long-term accumulation will not only increase the difficulty and cost of equipment maintenance, but may also cause blockage failures, forcing the production line to be interrupted, resulting in a waste of precious production time and economic losses.

[0004] Therefore, based on the above search and in combination with the prior art, an atomizing device for a spray dryer is proposed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an atomizing device for a spray dryer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An atomizing device for a spray dryer comprises: a bracket, a drying tower is fixedly mounted on the top surface of the bracket, a blower is fixedly mounted on one side of the bracket, a heater is fixedly mounted on one side of the blower, an air supply pipe is arranged on one side of the heater, the other end of the air supply pipe is connected to the interior of the drying tower, a cyclone separator is fixedly mounted on one side of the drying tower, a collecting bottle is fixedly mounted on one side of the cyclone separator; an atomizing mechanism, the atomizing mechanism is arranged on the drying tower, the atomizing mechanism comprises: an atomizer, the atomizer is arranged on the top surface of the drying tower, a nozzle on the bottom surface of the atomizer is located on the top surface inside the drying tower, and the atomizing mechanism also comprises a material conveying component and a detection component.

[0007] Preferably, the material conveying assembly includes: a shell, which is fixedly mounted on the side wall of the atomizer, a cavity is opened inside the shell, a top plate is fixedly mounted on the top surface of the shell, an infusion tube is arranged on the top plate, one end of the infusion tube is connected to a pump for conveying material liquid, and the other end passes through the top surface of the top plate and extends into the cavity.

[0008] Preferably, the detection component includes: a fixed plate 1, which is fixedly installed on the inner wall of the cavity, a fixed plate 2 is fixedly installed below the fixed plate 1, a partition is fixedly installed between the fixed plate 1 and the fixed plate 2, a connecting plate is fixedly installed on the side wall of the partition, a moving block is arranged above the fixed plate 1, a through hole is opened on the top surface of the moving block, a cylinder is arranged on the moving block, the top surface of the cylinder is fixedly connected to the bottom surface of the moving block, and the other end passes through the top surface of the fixed plate 1 and extends to the top of the connecting plate, an electric push rod is fixedly installed on the top surface of the connecting plate, the output shaft of the electric push rod is connected to the bottom surface of the cylinder, and the interior of the cylinder is connected to the through hole.

[0009] Preferably, the detection component also includes: a volumetric flowmeter, which is fixedly mounted on the top surface of the fixed plate 2 and is located below the electric push rod, and a connecting pipe 1 is provided on the volumetric flowmeter, one end of the connecting pipe 1 is connected to the interior of the cylinder, and the other end is connected to the interior of the volumetric flowmeter, and a connecting pipe 2 is provided on one side of the volumetric flowmeter, and the other end of the connecting pipe 2 passes through the top surface of the fixed plate 2 and extends to above the bottom surface of the cavity, and the detection component also includes a dilution component and a reflux component.

[0010] Preferably, the diluting component includes: an infusion pump 1, which is fixedly mounted on the top surface of the fixed plate 2 and is located on one side of the volumetric flowmeter; the infusion pump 1 is provided with an inlet pipe, one side of the inlet pipe is connected to the diluent storage tank, and the other side is connected to one side of the infusion pump 1; and one side of the fixed plate 2 is provided with a liquid outlet pipe.

[0011] Preferably, the diluting component also includes: a fixed column, which is fixedly installed on the bottom surface of the cavity, and a plurality of leakage holes are opened on the side wall of the fixed column. A stirring blade is rotatably connected to the inside of the fixed column, and the other end of the liquid outlet pipe passes through the top surface of the second fixed plate and the side wall of the fixed column and extends to the inside of the fixed column.

[0012] Preferably, the reflux component includes: a mounting plate, which is fixedly mounted on the side wall of the shell, an infusion pump 2 is fixedly mounted on the top surface of the mounting plate, a hose 1 is arranged on one side of the infusion pump 2, and a hose 2 is arranged on the other side of the infusion pump 2, the other side of the hose 1 penetrates the side wall of the shell and extends to the bottom of the fixed plate 2, and the other side of the hose 2 penetrates the side walls of the shell and the movable block and extends to the through hole.

[0013] Preferably, a leakage hole is provided on the bottom surface of the cavity, and the leakage hole is connected to the interior of the atomizer. A switch component is provided on one side of the leakage hole, and the switch component includes: a limit plate, a slide groove is provided on the bottom surface of the limit plate, a sealing plate is slidably connected to the inner wall of the slide groove, a spring is provided on the surface of the sealing plate adjacent to the slide groove, a rope is fixedly installed on the side wall of the sealing plate away from the spring, and the other end of the rope is fixedly connected to the bottom surface of the cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing a detection component, the accuracy and efficiency of material liquid viscosity control are significantly improved. The volumetric flowmeter in the detection component can measure the number of times the material liquid flows through a certain volume and the resistance it encounters in real time and accurately, thereby accurately calculating the viscosity of the material liquid, ensuring that the viscosity of the material liquid before spray drying meets the process requirements, effectively avoiding problems such as poor atomization effect or equipment blockage caused by improper viscosity, and greatly improving the stability of the production process and product quality. In addition, the detection component is also equipped with a dilution and reflux re-detection function. Once it is found that the viscosity of the material liquid exceeds the standard, the dilution program is immediately started, and the diluted material liquid is sent back to the detection component through the reflux component for viscosity verification until the viscosity of the material liquid meets the requirements. The high degree of automation and intelligence of this process greatly reduces manual intervention and errors, and improves overall production efficiency and flexibility; 2. In the present invention, by providing a switch component, precise control and efficient management of the flow direction of the material liquid are achieved. Through the coordinated action of the electric push rod, rope, sealing plate, spring and other components, the switch component can automatically adjust the opening or closing state of the leakage hole according to the feedback signal of the detection component. When the viscosity of the material liquid meets the requirements, the electric push rod contracts, driving the rope to release, and the spring rebounds to push the sealing plate to slide, thereby opening the leakage hole, allowing the material liquid to smoothly flow into the atomizer for atomization and drying. When the viscosity of the material liquid is too high and needs to be diluted, the electric push rod extends and pulls the sealing plate through the rope to tightly fit the leakage hole, effectively preventing the material liquid from continuing to flow into the atomizer, ensuring the smooth progress of the dilution process, improving the accuracy and flexibility of material processing, and effectively avoiding material leakage and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drying tower structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the atomization mechanism of the present invention; Figure 4 This is a schematic diagram of the split structure of the top plate and the shell of the present invention; Figure 5 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 6 It is a schematic diagram of the overall structure of the detection component of the present invention; Figure 7 It is a bottom view structural diagram of the switch element of the present invention; Figure 8 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0016] In the figure: 1. bracket; 2. drying tower; 3. blower; 4. heater; 5. air supply pipe; 6. cyclone separator; 7. collecting bottle; 8. atomizer; 9. shell; 10. cavity; 11. top plate; 12. infusion tube; 13. fixed plate 1; 14. fixed plate 2; 15. partition; 16. connecting plate; 17. moving block; 18. through hole; 19. cylinder; 20. electric push rod; 21. volumetric flowmeter; 22. connecting pipe 1; 23. connecting pipe 2; 24. infusion pump 1; 25. liquid inlet pipe; 26. liquid outlet pipe; 27. fixed column; 28. leakage hole; 29. ​​stirring blade; 30. limit plate; 31. slide groove; 32. sealing plate; 33. spring; 34. rope; 35. leakage hole; 36. mounting plate; 37. infusion pump 2; 38. hose 1; 39. hose 2. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In a typical implementation of this application, please refer to Figures 1 to 8 As shown, an atomizing device for a spray dryer comprises: a bracket 1, a drying tower 2 is fixedly mounted on the top surface of the bracket 1, a blower 3 is fixedly mounted on one side of the bracket 1, a heater 4 is fixedly mounted on one side of the blower 3, an air supply pipe 5 is arranged on one side of the heater 4, the other end of the air supply pipe 5 is connected to the interior of the drying tower 2 to provide hot air for the drying tower 2, a cyclone separator 6 is fixedly mounted on one side of the drying tower 2, the dried powdered material and the gas mixture are separated into gas and solid through the cyclone separator 6, a collecting bottle 7 is fixedly mounted on one side of the cyclone separator 6 to collect the dried material; an atomizing mechanism, the atomizing mechanism is arranged on the drying tower 2, the atomizing mechanism comprises: an atomizer 8, the atomizer 8 is arranged on the top surface of the drying tower 2, the nozzle on the bottom surface of the atomizer 8 is located on the top surface inside the drying tower 2, and the atomizing mechanism also comprises a material conveying component and a detection component.

[0019] As a preferred implementation in this embodiment, please refer to Figure 1 and Figure 3 As shown, the material conveying assembly includes: a shell 9, the shell 9 is fixedly mounted on the side wall of the atomizer 8, a cavity 10 is opened inside the shell 9, a top plate 11 is fixedly mounted on the top surface of the shell 9, the top plate 11 is used to seal the top of the cavity 10, an infusion tube 12 is arranged on the top plate 11, one end of the infusion tube 12 is connected to a pump for conveying material liquid, and the other end passes through the top surface of the top plate 11 and extends into the cavity 10 to convey the material liquid to the top surface of a fixed plate 13.

[0020] Through the above-mentioned features, the material liquid can be transported to the top surface of the fixed plate 13. Specifically, when the temperature inside the drying tower 2 is heated to a suitable temperature, the staff turns on the pump for transporting the material liquid, so that the material liquid is transported to the top surface of the fixed plate 13 through the infusion pipe 12, and then the next step of detection operation is carried out.

[0021] As a preferred implementation in this embodiment, please refer to Figure 2 to Figure 6As shown, the detection assembly includes: a fixed plate 13, the fixed plate 13 is fixedly installed on the inner wall of the cavity 10, a fixed plate 2 14 is fixedly installed below the fixed plate 13, a partition 15 is fixedly installed between the fixed plate 13 and the fixed plate 2 14, a connecting plate 16 is fixedly installed on the side wall of the partition 15, a moving block 17 is arranged above the fixed plate 13, a through hole 18 is opened on the top surface of the moving block 17, a cylinder 19 is arranged on the moving block 17, the top surface of the cylinder 19 is fixedly connected to the bottom surface of the moving block 17, and the other end passes through the top surface of the fixed plate 13 and extends to the top of the connecting plate 16, and an electric push rod 20 is fixedly installed on the top surface of the connecting plate 16. The output shaft of the electric push rod 20 is connected to the bottom surface of the cylinder 19, and the interior of the cylinder 19 is connected to the through hole 18. The detection component also includes: a volumetric flowmeter 21, which is fixedly mounted on the top surface of the fixed plate 14 and is located below the electric push rod 20. A connecting pipe 22 is provided on the volumetric flowmeter 21, one end of the connecting pipe 22 is connected to the interior of the cylinder 19, and the other end is connected to the interior of the volumetric flowmeter 21, a connecting pipe 23 is provided on one side of the volumetric flowmeter 21, and the other end of the connecting pipe 23 passes through the top surface of the fixed plate 14 and extends to above the bottom surface of the cavity 10. The detection component also includes a dilution component and a reflux component.

[0022] Through the above features, the viscosity of the material liquid can be detected. Specifically, when the interior of the fixed plate 13 is filled with the material liquid, the liquid will flow into the cylinder 19 through the through hole 18, and then flow into the volumetric flowmeter 21 through the connecting pipe 1 22 to detect the viscosity of the material liquid. After that, the material liquid will flow into the bottom of the fixed plate 2 14 through the connecting pipe 2 23 for storage. It is worth mentioning that the volumetric flowmeter 21 calculates the flow rate by measuring the number of times the fluid flows through a certain volume. When the material liquid flows through the inside of the flowmeter, a certain resistance will be generated due to the interaction between the material liquid and the flowmeter rotor. This resistance is related to the viscosity of the material liquid. Therefore, by measuring the number of times the rotor rotates and the resistance it encounters, the viscosity of the material liquid can be inferred.

[0023] As a preferred implementation in this embodiment, please refer to Figure 4 and Figure 6As shown, the diluting component includes: an infusion pump 24, which is fixedly mounted on the top surface of the fixed plate 14 and is located on one side of the volumetric flowmeter 21, and an inlet pipe 25 is arranged on the infusion pump 24, one side of the inlet pipe 25 is connected to the diluent storage tank, and the other side is connected to one side of the infusion pump 24, and a liquid outlet pipe 26 is arranged on one side of the fixed plate 14, and the diluting component also includes: a fixed column 27, which is fixedly mounted on the bottom surface of the cavity 10, and a plurality of leakage holes 28 are opened on the side wall of the fixed column 27, and a stirring blade 29 is rotatably connected to the inside of the fixed column 27, and the other end of the liquid outlet pipe 26 passes through the top surface of the fixed plate 14 and the side wall of the fixed column 27 and extends to the inside of the fixed column 27.

[0024] Through the above-mentioned features, the material liquid detected to have too high viscosity can be diluted. Specifically, if the viscosity of the material liquid is found to be too high, the staff will turn on the infusion pump 24 according to the number of times the rotor of the volumetric flowmeter 21 rotates and the resistance it encounters, and extend the electric push rod 20 upward to drive the cylinder 19 and the moving block 17 to move upward, so that the moving block 17 fits the bottom surface of the top plate 11 for sealing, and stops the pump for conveying the material liquid. During the rising process of the electric push rod 20, the switch will be closed, so that the material liquid will no longer be injected into the atomizer 8 for atomization, and then the diluent will be injected into the fixed column 27 through the liquid inlet pipe 25 and the liquid outlet pipe 26. At this time, the diluent will hit the stirring blade 29 to make it rotate, thereby accelerating the mixing of the material liquid and the diluent.

[0025] As a preferred implementation in this embodiment, please refer to Figure 3 , Figure 4 and Figure 6 As shown, the reflux component includes: a mounting plate 36, the mounting plate 36 is fixedly mounted on the side wall of the shell 9, an infusion pump 37 is fixedly mounted on the top surface of the mounting plate 36, a hose 38 is provided on one side of the infusion pump 37, a hose 39 is provided on the other side of the infusion pump 37, the other side of the hose 38 passes through the side wall of the shell 9 and extends to the bottom of the fixed plate 14, and the other side of the hose 39 passes through the side walls of the shell 9 and the moving block 17 and extends to the through hole 18.

[0026] Through the above-mentioned features, the diluted material liquid can be re-tested. Specifically, after mixing is completed, the staff turns on the infusion pump 2 37 to allow the mixed material liquid to flow into the through hole 18 through the hose 1 38 and the hose 2 39, and then pass the detection by the volumetric flowmeter 21. After the detection is completed, the electric push rod 20 will shrink, and the switch will be turned on at this time, so that the material liquid will flow into the atomizer 8 again for atomization. If the viscosity is still not up to standard, the above operation will be repeated until it is up to standard.

[0027] As a preferred implementation in this embodiment, please refer to Figure 6 and Figure 7As shown, a leakage hole 35 is provided on the bottom surface of the cavity 10, and the leakage hole 35 is connected to the interior of the atomizer 8. A switch component is provided on one side of the leakage hole 35, and the switch component includes: a limit plate 30, a slide groove 31 is provided on the bottom surface of the limit plate 30, and a sealing plate 32 is slidably connected to the inner wall of the slide groove 31, and a spring 33 is provided on the surface of the sealing plate 32 adjacent to the slide groove 31, and a rope 34 is fixedly installed on the side wall of the sealing plate 32 away from the spring 33, and the other end of the rope 34 is fixedly connected to the bottom surface of the cylinder 19.

[0028] Through the above features, the leakage hole 35 can be closed or opened according to the extension and contraction of the electric push rod 20. Specifically, when the electric push rod 20 extends upward, the cylinder 19 will rise with the extension of the electric push rod 20, and will drive the rope 34 to pull the sealing plate 32 to seal the leakage hole 35. At this time, the spring 33 will be deformed by the force. If the electric push rod 20 shrinks, the sealing plate 32 will cancel the sealing of the leakage hole 35 under the action of the rebound force of the spring 33; It is worth mentioning that the limit plate 30, the spring 33 and the rope 34 are all coated with waterproof coating. In addition, the connecting plate 16 penetrates through the fixed plate 2 at 14, the cylinder 19 penetrates through the fixed plate 1 at 13, the connecting pipe 23 penetrates through the fixed plate 2 at 14, the rope 34 penetrates through the fixed plate 2 at 14, the hose 1 38 penetrates through the shell 9 and the hose 2 39 penetrates through the shell 9, and sealing rings are provided to prevent the material liquid from flowing out.

[0029] Working principle: When in use, the blower 3 is started to blow air into the heater 4 for heating. The heated hot air is sent into the drying tower 2 through the air supply pipe 5 to provide the required thermal environment for the spray drying process. When the temperature inside the drying tower 2 reaches the preset value, the staff starts the pump for conveying the material liquid. The material liquid is conveyed to the cavity 10 in the shell 9 through the infusion pipe 12 and first falls on the top surface of the fixed plate 13. As the material liquid is continuously injected, the liquid flows into the cylinder 19 through the through hole 18 on the moving block 17, and then passes through the connecting pipe 11. 22 enters the volumetric flowmeter 21, which calculates the viscosity of the material liquid by measuring the number of times the material liquid flows through a certain volume and the resistance it encounters. If the viscosity of the material liquid meets the requirements of spray drying, the electric push rod 20 will shrink, driving the cylinder 19 and the moving block 17 to move downward. At this time, the spring 33 rebounds, pushing the sealing plate 32 to slide in the slide groove 31, canceling the seal of the leakage hole 35, and the material liquid flows into the atomizer 8 through the leakage hole 35, and is atomized into tiny droplets by the nozzle on the bottom of the atomizer 8, and enters the drying tower 2. The dried powdered material and the gas mixture are separated into gas and solid by the cyclone separator 6, and finally the powdered material is collected in the collection bottle 7. If the viscosity of the material liquid is too high, the volumetric flow meter 21 will send a signal, and the staff will start the infusion pump 1 24 according to the signal, and inject the diluent from the diluent storage box into the fixed column 27 through the liquid inlet pipe 25 and the liquid outlet pipe 26. The diluent hits the stirring blade 29 in the fixed column 27 to make it rotate, thereby accelerating the mixing of the material liquid and the diluent. The mixed material liquid is sent through the infusion pump 2 37, Hose 1 38 and hose 2 39 flow back into the through hole 18 on the moving block 17 and are tested by the volumetric flowmeter 21 again. If the viscosity is still unqualified, the above dilution process is repeated until the viscosity of the material liquid meets the requirement. When the viscosity of the material liquid meets the requirement, the electric push rod 20 contracts again, and the material liquid flows into the atomizer 8 through the leakage hole 35 for atomization and drying. During the whole process, the limit plate 30, spring 33, rope 34 and sealing rings at each connection all play a role in preventing leakage of the material liquid, thereby ensuring the stable operation of the device.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An atomizing device for a spray dryer, characterized in that: include: A bracket (1), a drying tower (2) being fixedly mounted on the top surface of the bracket (1), a blower (3) being fixedly mounted on one side of the bracket (1), a heater (4) being fixedly mounted on one side of the blower (3), an air supply pipe (5) being provided on one side of the heater (4), the other end of the air supply pipe (5) being connected to the interior of the drying tower (2), a cyclone separator (6) being fixedly mounted on one side of the drying tower (2), and a collecting bottle (7) being fixedly mounted on one side of the cyclone separator (6); Atomizing mechanism, the atomizing mechanism is arranged on the drying tower (2), and the atomizing mechanism comprises: An atomizer (8), wherein the atomizer (8) is arranged on the top surface of the drying tower (2), a nozzle on the bottom surface of the atomizer (8) is located on the top surface inside the drying tower (2), and the atomization mechanism further comprises a material conveying component and a detection component.

2. The atomizing device for a spray dryer according to claim 1, characterized in that: Material handling components include: A shell (9), the shell (9) being fixedly mounted on a side wall of an atomizer (8), the shell (9) being provided with a cavity (10) inside, a top plate (11) being fixedly mounted on the top surface of the shell (9), a liquid infusion tube (12) being arranged on the top plate (11), one end of the liquid infusion tube (12) being connected to a pump for conveying material liquid, and the other end of the liquid infusion tube (12) penetrating the top surface of the top plate (11) and extending into the cavity (10).

3. The atomizing device for a spray dryer according to claim 1, characterized in that: The detection components include: A fixing plate (13) is fixedly mounted on the inner wall of the cavity (10); a fixing plate (14) is fixedly mounted below the fixing plate (13); a partition (15) is fixedly mounted between the fixing plate (13) and the fixing plate (14); a connecting plate (16) is fixedly mounted on the side wall of the partition (15); a moving block (17) is arranged above the fixing plate (13); and the top surface of the moving block (17) is open. A through hole (18) is provided on the moving block (17), and a cylinder (19) is arranged on the moving block (17). The top surface of the cylinder (19) is fixedly connected to the bottom surface of the moving block (17), and the other end passes through the top surface of the fixing plate (13) and extends to the top of the connecting plate (16). An electric push rod (20) is fixedly installed on the top surface of the connecting plate (16), and the output shaft of the electric push rod (20) is connected to the bottom surface of the cylinder (19), and the interior of the cylinder (19) is connected to the through hole (18).

4. The atomizing device for a spray dryer according to claim 3, characterized in that: The detection components also include: A volumetric flowmeter (21), the volumetric flowmeter (21) being fixedly mounted on the top surface of the second fixing plate (14) and being located below the electric push rod (20), the volumetric flowmeter (21) being provided with a connecting pipe (22), one end of the connecting pipe (22) being in communication with the interior of the cylinder (19), and the other end of the connecting pipe (22) being in communication with the interior of the volumetric flowmeter (21), a connecting pipe (23) being provided on one side of the volumetric flowmeter (21), the other end of the connecting pipe (23) penetrating the top surface of the second fixing plate (14) and extending to above the bottom surface of the cavity (10), and the detection assembly further comprising a diluting component and a reflux component.

5. The atomizing device for a spray dryer according to claim 4, characterized in that: Dilution parts include: An infusion pump (24) is fixedly mounted on the top surface of a second fixed plate (14) and is located on one side of the volumetric flow meter (21). An infusion pump (24) is provided with a liquid inlet pipe (25), one side of the liquid inlet pipe (25) is connected to a diluent storage tank, and the other side is connected to one side of the infusion pump (24). A liquid outlet pipe (26) is provided on one side of the second fixed plate (14).

6. The atomizing device for a spray dryer according to claim 5, characterized in that: The dilution parts also include: A fixed column (27), the fixed column (27) being fixedly mounted on the bottom surface of the cavity (10), a plurality of leakage holes (28) being provided on the side wall of the fixed column (27), a stirring blade (29) being rotatably connected inside the fixed column (27), and the other end of the liquid outlet pipe (26) penetrating the top surface of the second fixed plate (14) and the side wall of the fixed column (27) extending to the inside of the fixed column (27).

7. The atomizing device for a spray dryer according to claim 5, characterized in that: The return parts include: A mounting plate (36), wherein the mounting plate (36) is fixedly mounted on the side wall of the housing (9), and an infusion pump (37) is fixedly mounted on the top surface of the mounting plate (36). A hose (38) is provided on one side of the infusion pump (37), and a hose (39) is provided on the other side of the infusion pump (37). The other side of the hose (38) passes through the side wall of the housing (9) and extends to the bottom of the fixed plate (14), and the other side of the hose (39) passes through the side wall of the housing (9) and the moving block (17) and extends to the through hole (18).

8. The atomizing device for a spray dryer according to claim 2, characterized in that: A liquid leakage hole (35) is provided on the bottom surface of the cavity (10), the liquid leakage hole (35) is in communication with the interior of the atomizer (8), and a switch component is provided on one side of the liquid leakage hole (35), the switch component comprising: A limit plate (30) is provided with a slide groove (31) on the bottom surface of the limit plate (30), a sealing plate (32) is slidably connected to the inner wall of the slide groove (31), a spring (33) is provided on the surface of the sealing plate (32) adjacent to the slide groove (31), a rope (34) is fixedly installed on the side wall of the sealing plate (32) away from the spring (33), and the other end of the rope (34) is fixedly connected to the bottom surface of the cylinder (19).

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