Traditional Chinese medicine extract spray dryer

Abstract

This utility model relates to the technical field of spray dryers for traditional Chinese medicine extracts, specifically a spray dryer for traditional Chinese medicine extracts, including a machine body, a cover plate, a connecting mechanism, and a cleaning mechanism. The machine body has a support base at its bottom, and several support bases are provided. The cover plate is connected to the machine body via the connecting mechanism. The connecting mechanism includes a fixing block, an annular groove, an electromagnet, and bolts. The annular groove is formed on the side wall of the cover plate. One end of the fixing block is connected to the machine body via the bolts, and the other end of the fixing block extends into the annular groove, with the portion of the fixing block extending into the annular groove matching the groove. One end of the electromagnet is connected to the top of the machine body, and the other end of the electromagnet is attracted to the side wall of the cover plate. Several connecting mechanisms are provided. The cleaning mechanism includes a through groove, a vertical block, a sliding component, a sealing block, and a scraper. This utility model of a spray dryer for traditional Chinese medicine extracts solves the problem of inconvenient cleaning of current equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of spray dryers for traditional Chinese medicine extracts, specifically spray dryers for traditional Chinese medicine extracts. Background Technology

[0002] As is well known, a spray dryer is a device that uses the principles of atomization and heat exchange to atomize liquid materials (such as solutions, suspensions, and emulsions) into micron-sized droplets, which then come into full contact with hot air, causing the moisture to evaporate in a short time and ultimately yielding a dry solid product. It is widely used in industries such as pesticide formulation.

[0003] However, most existing spray dryers for Chinese herbal extracts are one-piece structures, which makes cleaning the inner wall of the machine inconvenient. During the drying process, the highly viscous droplets of Chinese herbal extracts easily adhere to the inner wall, forming residues. The one-piece design lacks detachable parts, making it difficult to cover corners and complex structural areas by manual cleaning. The residual material will not only deteriorate due to prolonged heating, affecting the quality of subsequent products, but may also block the internal channels, increasing the operating resistance of the equipment, and even reducing drying efficiency due to uneven hot air distribution. This cleaning problem is particularly obvious when dealing with highly viscous extracts, which is not only time-consuming and labor-intensive, but may also cause equipment failure and material contamination problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a spray dryer for traditional Chinese medicine extracts.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a spray dryer for traditional Chinese medicine extracts, comprising a machine body, a cover plate, a connecting mechanism, and a cleaning mechanism. The machine body has a support base at its bottom, and several support bases are provided. The cover plate is connected to the machine body via the connecting mechanism. The connecting mechanism includes a fixing block, an annular groove, an electromagnet, and bolts. The annular groove is formed on the side wall of the cover plate. One end of the fixing block is connected to the machine body via the bolts, and the other end of the fixing block extends into the annular groove, with the portion of the fixing block extending into the annular groove matching the groove. One end of the electromagnet is connected to the top of the machine body, and the other end of the electromagnet is attracted to the side wall of the cover plate. Several connecting mechanisms are provided. The cleaning mechanism includes a through groove, a vertical block, a sliding component, a sealing block, and a scraper. The through groove is opened on the cover plate. The vertical block is connected to the top of the cover plate. The sliding component is disposed on the vertical block. The top of the sealing block is connected to the vertical block through the sliding component. The bottom of the sealing block is connected to the scraper. The sealing block matches the through groove. The scraper matches the through groove. There are two cleaning mechanisms.

[0008] To improve stability, this utility model is improved by having several of the connecting mechanisms symmetrically arranged and two of the cleaning mechanisms symmetrically arranged.

[0009] To improve the sealing effect, the present invention is improved by providing a sealing strip on the outer wall of the sealing block, and the sealing strip is fixedly connected to the sealing block.

[0010] To improve the strength of the bolt, this utility model has an improvement: the bolt is made of stainless steel.

[0011] To facilitate operation of the equipment, the present invention is improved by providing a controller on the top of the cover plate, and the controller is electrically connected to the sliding component.

[0012] To improve the connection effect, the present invention is improved by welding the support base to the body.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a spray dryer for traditional Chinese medicine extracts, which has the following beneficial effects:

[0015] This traditional Chinese medicine extract spray dryer significantly improves practicality and reliability through innovative design of its connecting and cleaning mechanisms. The connecting mechanism, with its fixed block and annular groove, allows for cover plate rotation adjustment, while electromagnet adsorption enhances connection stability. The symmetrically arranged connecting mechanism ensures even distribution of locking force, preventing cover plate deformation and guaranteeing a tight seal. The cleaning mechanism, driven by a sliding component, uses a scraper to effectively remove material adhering to the inner wall of the machine. The symmetrically arranged cleaning mechanism covers a wider area, improving cleaning efficiency. The sealing design of the sealing block and through groove prevents hot air leakage during drying. Welding the support base to the machine body enhances stability, and stainless steel bolts improve connection strength and corrosion resistance. The controller is electrically connected to the sliding component, facilitating automated operation and cleaning control. The overall structure solves the problem of inconvenient cleaning in traditional equipment, reduces material residue, minimizes impact on subsequent work, and improves equipment operating efficiency and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the axonal structure of the present invention;

[0019] Figure 4 This utility model Figure 1 The front view;

[0020] In the diagram: 1. Body; 2. Support base; 3. Cover plate; 4. Connecting mechanism; 5. Fixing block; 6. Annular groove; 7. Electromagnet; 8. Cleaning mechanism; 9. Through groove; 10. Vertical block; 11. Sliding assembly; 12. Sealing block; 13. Scraper; 14. Bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A spray dryer for traditional Chinese medicine extracts includes a body 1, a cover plate 3, a connecting mechanism 4, and a cleaning mechanism 8. The bottom of the body 1 is provided with a support base 2, of which several bases are provided. The cover plate 3 is connected to the body 1 via the connecting mechanism 4. The connecting mechanism 4 includes a fixing block 5, an annular groove 6, an electromagnet 7, and bolts 14. The annular groove 6 is formed on the side wall of the cover plate 3. One end of the fixing block 5 is connected to the body 1 via the bolts 14, and the other end of the fixing block 5 extends into the annular groove 6, with the portion of the fixing block 5 extending into the annular groove 6 matching the groove. One end of the electromagnet 7 is connected to the top of the body 1. The electromagnet 7 is connected to the side wall of the cover plate 3 at the other end. Several connecting mechanisms 4 are provided. The cleaning mechanism 8 includes a through groove 9, a vertical block 10, a sliding component 11, a sealing block 12, and a scraper 13. The through groove 9 is opened on the cover plate 3. The vertical block 10 is connected to the top of the cover plate 3. The sliding component 11 is disposed on the vertical block 10. The top of the sealing block 12 is connected to the vertical block 10 through the sliding component 11. The bottom of the sealing block 12 is connected to the scraper 13. The sealing block 12 matches the through groove 9. The scraper 13 matches the through groove 9. There are two cleaning mechanisms 8.

[0023] Working principle: When using the equipment, first place it in the designated position and achieve stable support through the support base 2 (welded and fixed to the machine body 1). Then connect the external mains power and the docking pipes of the machine body 1 (such as feed pipe, hot air pipe, etc.). The machine body 1 is a conventional Chinese medicine extract spray dryer, integrating standard components such as atomizer, hot air distributor, and bag dust collector (the description of the stirring component is inaccurate, so it is corrected to atomizer here). Its drying principle is: the extract is dispersed into droplets by the atomizer, and after contact with hot air, it is quickly dried into powder and collected by the gas-solid separation system.

[0024] The specific steps are as follows:

[0025] Preparations before startup: such as Figure 1 As shown, the sliding assembly 11 (composed of a slide groove, motor, threaded rod, etc.) is activated by the controller on the top of the cover plate 3, which drives the sealing block 12 to descend along the upright block 10, so that its outer wall fits against the through groove 9 to complete the sealing; at this time, the scraper 13 naturally falls into the interior of the machine body 1, and maintains a safe distance (≤5mm) from the stirring blade and other components, so as not to affect the operation of the equipment.

[0026] Drying operation: Pour the Chinese herbal extract into machine body 1, start the atomization system and hot air device, and spray dry according to the preset process parameters (such as inlet air temperature 180-220℃). The dried powder is discharged through the bottom outlet.

[0027] Cleaning process

[0028] Primary cleaning: After the equipment is used up, inject clean water (water temperature 40-60℃) into the machine body 1, start the sliding component 11 again, and drive the scraper 13 to extend into the machine body 1 along the through groove 9. Its cutting edge is in contact with the inner wall (roughness Ra≤0.8μm) and scrapes off the adhering material by reciprocating sliding.

[0029] Deep cleaning: Turn off the electromagnet 7 (powered by DC24V, suction force ≥500N) to release the adsorption on the martensitic stainless steel cover plate 3. Using the hinge structure between the annular groove 6 and the fixed block 5, rotate the cover plate 3 90° around the fixed block 5 so that the scraper 13 covers a wider area. After cleaning, unscrew the stainless steel bolt 14, remove the cover plate 3 upwards to expose the top opening of the machine body 1, and use a high-pressure water gun (pressure ≥2MPa) to rinse the cone bottom and inner wall for residual materials.

[0030] Reset operation: After cleaning, install the cover plate 3 in reverse order, lock it with the fixing block 5 by bolt 14, start the electromagnet 7 to attract and fix it, and finally control the sliding component 11 to make the sealing block 12 re-seal the through groove 9 to ensure the airtightness of the equipment.

[0031] To improve the stability of equipment operation, several connecting mechanisms 4 are symmetrically arranged in this embodiment, and two cleaning mechanisms 8 are also symmetrically distributed. This symmetrical layout allows the locking force of the connecting mechanisms 4 on the cover plate 3 to be evenly applied to the body 1, avoiding installation deviations caused by uneven force and ensuring the coaxiality of the cover plate 3 and the body 1. The symmetrically arranged cleaning mechanisms 8 can offset lateral forces through synchronous operation, preventing the sliding component 11 from getting stuck, and can more comprehensively cover the inner wall of the body 1, improving cleaning efficiency and stability.

[0032] To improve the sealing effect between the sealing block 12 and the through groove 9, a sealing strip is fixedly connected to the outer wall of the sealing block 12 in this embodiment. The sealing strip is made of heat-resistant silicone rubber and has a trapezoidal cross-section. It is embedded in the annular groove on the outer wall of the sealing block 12 (the ratio of groove depth to sealing strip height is 1:1.2). When the sealing block 12 descends along the sliding component 11 to the through groove 9, the sealing strip is squeezed and undergoes elastic deformation, tightly filling the gap between the sealing block 12 and the inner wall of the through groove 9. This controls the gas leakage to below 0.5L / min, effectively preventing hot air leakage or external dust intrusion during the drying process. At the same time, the silicone rubber material can withstand high temperatures of 80-120℃, meeting the environmental requirements of the traditional Chinese medicine extract drying process.

[0033] To improve the structural strength and corrosion resistance of bolt 14, this embodiment uses 304 stainless steel to manufacture bolt 14. This material contains an alloy of 18% chromium and 8% nickel, with a tensile strength ≥520MPa and a yield strength ≥205MPa. Compared with ordinary carbon steel bolts, its fatigue strength is increased by 30%, and it can withstand the acidic vapors (such as volatile oil decomposition products) that may be generated during the drying process of traditional Chinese medicine extracts, avoiding the reduction of tightening force caused by bolt surface corrosion. The thread fit accuracy between bolt 14 and fixing block 5 reaches 6g / 6H grade, and the preload is evenly distributed after tightening, ensuring that the connection between cover plate 3 and body 1 maintains an axial clamping force of more than 1500N for a long time, and can still maintain reliable sealing performance under the condition of frequent start-up and shutdown of equipment.

[0034] To facilitate equipment operation, this embodiment integrates a controller on the top of the cover plate 3, which is electrically connected to the sliding component 11. The controller adopts a PLC control system and has a touch screen on the panel, which can display the operating parameters of the sliding component 11 in real time (such as the lifting speed and position coordinates of the scraper 13). It supports switching between manual and automatic modes: in manual mode, the lifting stroke of the sealing block 12 is controlled by buttons (adjustment accuracy ±1mm); in automatic mode, a cleaning program can be preset to realize the scraper 13 reciprocating along the set trajectory. The controller integrates an overload protection module, which automatically cuts off the power when the load of the sliding component 11 exceeds 120% of the rated value. It also has a fault code display function, which facilitates quick troubleshooting of abnormalities such as motor jamming and short circuits, making the equipment operation more convenient and efficient.

[0035] To improve the stability of the connection between the support base 2 and the body 1, this embodiment adopts welding to achieve a rigid connection between the two. Specifically, the top of the support base 2 and the bottom of the body 1 form a metal fusion joint through a continuous full welding process. Before welding, the contact surfaces are treated to remove rust and oil to ensure a clean welding interface. During the welding process, a symmetrical welding method is used, with multiple passes for uniform heating to reduce deformation caused by welding stress. After welding, the weld is ground smooth and coated with anti-rust paint to prevent corrosion of the welded parts. This welding connection method can withstand the dynamic loads during equipment operation and the vibrations from frequent cleaning operations. Compared with bolt connections or riveting, it eliminates the risk of loosening of the connecting parts, allowing the support base 2 to always maintain vertical support accuracy, providing a solid and stable support foundation for the body 1, and ensuring the long-term reliable operation of the equipment from a structural perspective.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray dryer for traditional Chinese medicine extracts, comprising a body (1), a cover plate (3), a connecting mechanism (4), and a cleaning mechanism (8), characterized in that: The bottom of the body (1) is provided with a support base (2), and there are several support bases (2). The cover plate (3) is connected to the body (1) through the connecting mechanism (4). The connecting mechanism (4) includes a fixing block (5), an annular groove (6), an electromagnet (7), and a bolt (14). The annular groove (6) is opened on the side wall of the cover plate (3). One end of the fixing block (5) is connected to the body (1) through the bolt (14), and the other end of the fixing block (5) extends into the annular groove (6). The part of the fixing block (5) extending into the annular groove (6) matches the annular groove (6). One end of the electromagnet (7) is connected to the top of the body (1), and the other end of the electromagnet (7) attracts the cover plate. The side wall of the plate (3) has several connecting mechanisms (4). The cleaning mechanism (8) includes a through groove (9), a vertical block (10), a sliding component (11), a sealing block (12), and a scraper (13). The through groove (9) is opened on the cover plate (3). The vertical block (10) is connected to the top of the cover plate (3). The sliding component (11) is set on the vertical block (10). The top of the sealing block (12) is connected to the vertical block (10) through the sliding component (11). The bottom of the sealing block (12) is connected to the scraper (13). The sealing block (12) matches the through groove (9). The scraper (13) matches the through groove (9). There are two cleaning mechanisms (8).

2. The spray dryer for traditional Chinese medicine extracts according to claim 1, characterized in that: Several of the connecting mechanisms (4) are symmetrically arranged, and two of the cleaning mechanisms (8) are symmetrically arranged.

3. The spray dryer for traditional Chinese medicine extracts according to claim 2, characterized in that: The outer wall of the sealing block (12) is provided with a sealing strip, and the sealing strip is fixedly connected to the sealing block (12).

4. The spray dryer for traditional Chinese medicine extracts according to claim 3, characterized in that: The bolt (14) is made of stainless steel.

5. The spray dryer for traditional Chinese medicine extracts according to claim 4, characterized in that: The top of the cover plate (3) is provided with a controller, which is electrically connected to the sliding component (11).

6. The spray dryer for traditional Chinese medicine extracts according to claim 5, characterized in that: The support base (2) is welded to the body (1).

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