Nozzle adjustment assembly for a spray dryer

Abstract

The utility model relates to based on nozzle adjusting assembly for spray drier, aims at solving the process of using the current nozzle because of not having the adjusting structure, cannot adjust the direction of nozzle spouts, cannot adapt the direction of nozzle spouts required by the user to increase the limitation of nozzle's technical problem, including: drying tower body is used for spray drying operation, the bottom end middle part intercommunication shower nozzle is connected in the drying tower body inner chamber both ends, and both ends extend to the outside through the bearing rotary connection in drying tower body both ends, and one end opening is used for feeding, and the other end is closed, adjusting mechanism is located drying tower body outer wall, is used for adjusting the spray angle of shower nozzle, adjusting mechanism includes: fixed base is fixed in drying tower body outer wall, the utility model can accurately control the rotation of the guide pipe driven shower nozzle, realize the multi-angle adjustment of the spray direction, completely solve the limitation that traditional nozzle cannot adapt to different drying scene, significantly improve the adaptability of equipment to material drying path.

Description

Technical Field

[0001] This utility model relates to the field of spray dryer technology, specifically to a nozzle adjustment assembly for a spray dryer. Background Technology

[0002] A spray dryer is a device that can simultaneously dry and granulate. The pressure, flow rate, and nozzle size of the feed pump can be adjusted according to process requirements to obtain spherical particles of a specific size ratio. A spray dryer is a type of continuous atmospheric pressure dryer that uses special equipment to spray liquid material into a mist, allowing it to contact hot air and be dried. It is used to dry some heat-sensitive liquids, suspensions, and viscous liquids, as well as fuels, intermediates, soap powder, and inorganic salts. Common types include electrically heated forced-air drying ovens, vacuum drying ovens, high-speed centrifugal spray dryers, and aseptic spray dryers. This article details the working principle, basic classifications, characteristics, technical parameters, application range, and operation procedures of spray dryers. It also emphasizes that spray dryers require the use of nozzles for spraying.

[0003] Traditional nozzles lack adjustment mechanisms, making it impossible to control the spray direction and adapt to the user's desired spray pattern, thus limiting their effectiveness. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a nozzle adjustment component for spray dryers. This solves the technical problem that the nozzles currently used cannot adjust the direction of the spray due to the lack of an adjustment structure, and cannot be adapted to the direction of the spray required by the user, thus increasing the limitations of the nozzles.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A nozzle adjustment assembly for a spray dryer is designed, comprising: Drying tower body, used for spray drying operations; The conduit is rotatably connected to both ends of the inner cavity of the drying tower via bearings. The bottom middle of the conduit is connected to the nozzle, and both ends extend through the drying tower body to the outside. One end is open for feeding, and the other end is closed. An adjustment mechanism, located on the outer wall of the drying tower, is used to adjust the spray angle of the nozzles. The adjustment mechanism includes: The fixing base is fixed to the outer wall of the drying tower. The connecting shaft has one end rotatably connected to the fixed seat via a bearing, and the other end is fixedly connected to the drive disc, with a worm gear fixedly sleeved on its outer side; The worm gear meshes with the worm wheel for transmission; The transmission assembly connects the drive disc and the closed end of the conduit.

[0006] Preferably, the transmission assembly includes: A connecting plate is fixedly connected to one closed end of the conduit, and the end of the connecting plate away from the conduit is rotatably connected to a first rotating shaft via a bearing. The second rotating shaft is rotatably connected to the end of the drive disc away from the connecting shaft via a bearing; A transmission rod is disposed between the first rotating shaft and the second rotating shaft, and the transmission rod is fixedly connected to the outside of the first rotating shaft and the second rotating shaft.

[0007] Preferably, a drive motor is fixedly connected to one end of the fixed base near the connecting shaft, and the drive end of the drive motor is connected to the worm gear transmission via a coupling.

[0008] Preferably, a feed pipe is fixedly connected to the outside of the feed end of the conduit, and the other end of the feed pipe is connected to the discharge end of the feed pump.

[0009] Preferably, the feed pipe is a flexible hose, and the feed pipe is integrally molded from polytetrafluoroethylene.

[0010] Preferably, the bearing at the connection between the conduit and the drying tower body is a metal-sealed bearing.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Adjustable spray angle: By adjusting the cooperation between the worm gear and the transmission component in the adjustment mechanism, the guide tube can be precisely controlled to drive the nozzle to rotate, realizing multi-angle adjustment of the spray direction. This completely solves the limitation of traditional nozzles that cannot adapt to different drying scenarios and significantly improves the equipment's adaptability to the material drying path. 2. Modular adjustment structure: The adjustment mechanism is independently set on the outer wall of the drying tower, which isolates the drive end from the inside of the drying tower. This allows operators to directly control the nozzle angle from the outside without disassembling the internal components of the tower, reducing maintenance complexity and downtime. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the drying tower body of this utility model.

[0013] In the diagram: 1. Drying tower body; 2. Guide tube; 21. Nozzle; 3. Feed pipe; 4. Connecting plate; 41. First rotating shaft; 42. Transmission rod; 43. Second rotating shaft; 44. Drive disc; 45. Fixed base; 46. Connecting shaft; 47. Worm gear; 48. Drive motor; 49. Worm. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: Based on the nozzle adjustment assembly for a spray dryer, see [link / reference] Figures 1 to 2 ,include: Drying tower body 1, used for spray drying operations; The conduit 2 is rotatably connected to both ends of the inner cavity of the drying tower 1 via bearings. The middle of its bottom end is connected to the nozzle 21. Both ends extend through the drying tower 1 to the outside. One end is open for feeding, and the other end is closed. An adjustment mechanism, located on the outer wall of the drying tower body 1, is used to adjust the spray angle of the nozzle 21. The adjustment mechanism includes: Fixing seat 45 is fixed to the outer wall of drying tower body 1; The connecting shaft 46 has one end rotatably connected to the fixed seat 45 via a bearing, and the other end is fixedly connected to the drive disk 44. A worm gear 47 is fixedly sleeved on its outer side. The worm gear 49 meshes with the worm wheel 47 for transmission; The transmission assembly is connected between the drive disc 44 and the closed end of the conduit 2.

[0015] This device, through its adjustable mechanism and transmission components, achieves the following during use: Adjustable spray angle: By adjusting the cooperation between the worm gear 47 and worm 49 in the adjustment mechanism and the transmission component, the duct 2 can be precisely controlled to drive the nozzle 21 to rotate, realizing multi-angle adjustment of the spray direction. This completely solves the limitation of traditional nozzles being unable to adapt to different drying scenarios, significantly improving the equipment's adaptability to the material drying path. Furthermore, the lead angle of the worm 49 is less than or equal to the equivalent friction angle of the worm 49 pair material, thus the transmission between the worm gear 47 and worm 49 has a self-locking characteristic. When the worm 49 stops rotating, it can automatically lock the current angle of the nozzle 21, preventing the nozzle 21 from shifting due to airflow impact or material reaction force within the drying tower 1, ensuring the stability and consistency of the drying process. Modular adjustment structure: The adjustment mechanism is independently set on the outer wall of the drying tower 1, which isolates the drive end from the inside of the drying tower 1. This allows the operator to directly control the angle of the nozzle 21 from the outside without disassembling the internal components of the tower, thus reducing maintenance complexity and downtime.

[0016] For details, see Figure 1The transmission assembly includes: a connecting plate 4, fixedly connected to one closed end of the conduit 2, with a first rotating shaft 41 rotatably connected to the end of the connecting plate 4 away from the conduit 2 via a bearing; a second rotating shaft 43, rotatably connected to the side of the drive disc 44 away from the connecting shaft 46 via a bearing; and a transmission rod 42, disposed between the first rotating shaft 41 and the second rotating shaft 43, with the transmission rod 42 fixedly connected between the outside of the first rotating shaft 41 and the second rotating shaft 43. The connecting plate 4, the first rotating shaft 41, the transmission rod 42, and the second rotating shaft 43 form a four-bar linkage mechanism, which converts the rotational motion of the drive disc 44 into the angular deflection of the conduit 2. This structure can maintain uniform torque transmission during transmission, avoid shaking or jamming when the nozzle 21 is adjusted, and ensure the adjustment accuracy of the spray angle.

[0017] Further, see Figure 1 The fixed base 45 is fixedly connected to a drive motor 48 at one end near the connecting shaft 46. The drive end of the drive motor 48 is connected to the worm gear 49 via a coupling. The direct transmission between the drive motor 48 and the worm gear 49 enables the electric adjustment of the nozzle 21 angle, which is more convenient than the traditional manual adjustment method. Furthermore, the drive motor 48 drives the worm gear 49 to rotate continuously, thereby enabling the nozzle 21 to continuously swing and spray within the drying tower 1 in conjunction with the transmission components, thus improving applicability and meeting different needs.

[0018] It is worth noting that, see Figure 1 The feed pipe 3 is fixedly connected to the outside of the feed end of the conduit 2, and the other end of the feed pipe 3 is connected to the discharge end of the feed pump. The feed pipe 3 is a flexible hose and is integrally formed of polytetrafluoroethylene. By making the feed pipe 3 a flexible hose, the conduit 2 is allowed to rotate freely when adjusting the spray angle, avoiding the limitation of the rigid connection on the rotation of the conduit 2. At the same time, it eliminates the stress concentration at the connection caused by equipment vibration and ensures that the feed pipe 3 maintains good sealing performance under long-term bending.

[0019] It is worth noting that, see Figure 2 The bearing at the connection between the conduit 2 and the drying tower 1 is a metal-sealed bearing. The metal-sealed bearing forms a rigid sealing structure at the connection between the conduit 2 and the drying tower 1, which can effectively prevent the leakage of high-temperature airflow inside the drying tower 1, maintain stable air pressure and temperature parameters in the drying environment inside the tower, and avoid the decrease in drying efficiency caused by hot air leakage. In addition, the metal bearing has higher wear resistance and can withstand the friction loss generated by the long-term rotation and adjustment of the conduit 2. Compared with ordinary rubber bearings, it significantly extends the replacement cycle of the sealing components and reduces equipment maintenance costs and downtime frequency.

[0020] The working principle of the nozzle adjustment assembly of this spray dryer is as follows: the drive motor 48 drives the worm 49 to rotate through the coupling. The worm 49 meshes with the worm wheel 47, causing the connecting shaft 46 to rotate. The drive disc 44 rotates accordingly and drives the transmission rod 42 to swing through the second rotating shaft 43. The transmission rod 42 drives the connecting plate 4 to rotate through the first rotating shaft 41, thereby causing the guide tube 2 to rotate around the metal-sealed bearing, realizing the adjustment of the spray angle of the nozzle 21. The four-bar linkage ensures uniform torque transmission. The self-locking characteristic of the worm wheel 47 and worm 49 locks the position of the nozzle 21 when the machine stops. The PTFE hose at the feed end of the guide tube 2 flexibly connects to the feed pump, allowing the guide tube 2 to rotate freely. The metal-sealed bearing prevents the leakage of high-temperature airflow, ensuring a stable drying environment, thereby realizing precise adjustment and reliable operation of the nozzle 21 angle.

[0021] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0022] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A nozzle adjustment assembly for a spray dryer, characterized in that, include: Drying tower body (1), used for spray drying operations; The conduit (2) is rotatably connected to both ends of the inner cavity of the drying tower body (1) through the bearing. The middle of its bottom end is connected to the nozzle (21). Both ends extend through the drying tower body (1) to the outside. One end is open for feeding, and the other end is closed. An adjustment mechanism, located on the outer wall of the drying tower body (1), is used to adjust the spray angle of the nozzle (21). The adjustment mechanism includes: The fixing seat (45) is fixed to the outer wall of the drying tower body (1); The connecting shaft (46) is rotatably connected to the fixed seat (45) through a bearing at one end, and the driving disk (44) is fixedly connected to the other end. A worm gear (47) is fixedly sleeved on its outer side. The worm (49) meshes with the worm wheel (47) for transmission; The transmission assembly is connected between the drive disc (44) and the closed end of the conduit (2).

2. The nozzle adjustment assembly for a spray dryer as described in claim 1, characterized in that, The transmission assembly includes: A connecting plate (4) is fixedly connected to one closed end of the conduit (2), and the end of the connecting plate (4) away from the conduit (2) is rotatably connected to a first rotating shaft (41) via a bearing. The second rotating shaft (43) is rotatably connected to the side of the drive disk (44) away from the connecting shaft (46) via a bearing; A transmission rod (42) is disposed between the first rotating shaft (41) and the second rotating shaft (43), and the transmission rod (42) is fixedly connected between the outside of the first rotating shaft (41) and the second rotating shaft (43).

3. The nozzle adjustment assembly for a spray dryer as described in claim 1, characterized in that, The fixed base (45) is fixedly connected to a drive motor (48) at one end near the connecting shaft (46), and the drive end of the drive motor (48) is connected to the worm gear (49) through a coupling.

4. The nozzle adjustment assembly for a spray dryer as described in claim 1, characterized in that, The feed pipe (3) is fixedly connected to the outside of the feed end of the conduit (2), and the other end of the feed pipe (3) is connected to the discharge end of the feed pump.

5. The nozzle adjustment assembly for a spray dryer as described in claim 4, characterized in that, The feed pipe (3) is a flexible tube, and the feed pipe (3) is integrally formed of polytetrafluoroethylene material.

6. The nozzle adjustment assembly for a spray dryer as described in claim 1, characterized in that, The bearing at the connection between the conduit (2) and the drying tower body (1) is a metal-sealed bearing.

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