A non-clogging screening device for the synthesis of pharmaceutical intermediates

Abstract

The utility model relates to the technical field of screening, disclose a kind of not easy to block's screening device for pharmaceutical intermediates synthesis, including vibrating screen, the vibrating screen top is provided with anti-blocking component, the anti-blocking component includes connecting plate, the connecting plate one side is fixedly connected in the vibrating screen top, the connecting plate inside is fixedly connected with multiple meshing columns, the vibrating screen top is fixedly connected with fixed link, the connecting plate outer wall is slidably connected with sliding frame, the support rod inside is provided with mounting assembly.In the utility model, the gear is rotated by motor driving, will make the gear do linear motion under the action of meshing column, to drive the reciprocating motion of scraper in vibrating screen inner wall, the effect of cleaning material is realized by scraping vibrating screen inside screen with scraper, solve the problem that strong adhesion, easy to agglomerate or moisture content high pharmaceutical intermediates are accumulated on screen surface, block screen hole, significantly improve screening efficiency and production continuity.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, and in particular to a screening device for the synthesis of pharmaceutical intermediates that is not easily clogged. Background Technology

[0002] In the field of pharmaceutical intermediate synthesis, screening devices are core equipment for ensuring product quality and production efficiency. Pharmaceutical intermediates are characterized by complex composition and diverse particle characteristics. Some materials have problems such as strong viscosity, easy agglomeration, and uneven particle size distribution. These characteristics can easily lead to screen blockage during screening, thereby affecting screening efficiency and product purity. At the same time, the pharmaceutical industry has strict requirements for the cleanliness, stability, and compliance of production equipment. Therefore, developing a screening device that can effectively prevent blockage and meet pharmaceutical production standards has become an urgent technical challenge for the industry.

[0003] In existing technologies, common pharmaceutical intermediate screening devices mostly use traditional screening equipment such as linear vibrating screens and rotary vibrating screens. Linear vibrating screens use a vibrating motor to generate linear excitation force, causing the material to move linearly on the screen surface to achieve screening. Rotary vibrating screens use a vertical motor to drive upper and lower eccentric weights, converting the rotational motion into three-dimensional motion of horizontal, vertical, and inclined axes, causing the material to move outward involute on the screen surface to achieve the screening purpose. The anti-clogging measures of these devices mainly rely on the screen aperture design and vibration frequency adjustment, using the screen's own vibration to shake off the material adhering to the surface, reducing the occurrence of clogging.

[0004] However, existing technologies have significant shortcomings. For pharmaceutical intermediates that are highly viscous and prone to agglomeration, such as materials containing oils, polysaccharides, proteins, or materials with high moisture content after wet granulation, relying solely on the vibration of the screen itself is insufficient to effectively break down the adhesion and agglomeration between materials. The materials are prone to forming "mud cake"-like accumulations on the screen surface or getting stuck in the screen holes, causing blockages. This results in a significant decrease in screening efficiency and may even require frequent shutdowns to clean the screen, severely impacting production progress and failing to meet the requirements for continuous and efficient pharmaceutical production. Therefore, a screening device for the synthesis of pharmaceutical intermediates that is not prone to clogging is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sieving device for the synthesis of pharmaceutical intermediates that is not prone to clogging. It aims to improve the existing technology, which is unable to break the adhesion and agglomeration structure between materials by relying solely on the vibration of the screen itself for pharmaceutical intermediates with strong viscosity, easy agglomeration or high water content, resulting in screen clogging, reduced sieving efficiency and poor production continuity.

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

[0007] A sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging includes a vibrating screen, the top of which is provided with an anti-clogging component;

[0008] The anti-clogging component includes a connecting plate, one side of which is fixedly connected to the top of the vibrating screen. Multiple meshing columns are fixedly connected inside the connecting plate. A fixing rod is fixedly connected to the top of the vibrating screen. A sliding frame is slidably connected to the outer wall of the connecting plate. A slider is slidably connected inside the sliding frame. A motor is fixedly connected to one side of the slider. A gear is fixedly connected to the output end of the motor, meshing with the gaps between the multiple meshing columns. A support rod is fixedly connected to one side of the sliding frame. A scraper is slidably connected to the bottom of the support rod, with one side of the scraper contacting the screen inside the vibrating screen. An installation component is provided inside the support rod.

[0009] As a further description of the above technical solution:

[0010] The mounting assembly includes a connecting shaft and a drive shaft. One side of the connecting shaft is fixedly connected to the top of the support rod, and the drive shaft is slidably connected inside the connecting shaft.

[0011] As a further description of the above technical solution:

[0012] A locking shaft is fixedly connected to the outer wall of the drive shaft, and a locking groove is provided inside the scraper.

[0013] As a further description of the above technical solution:

[0014] The engaging shaft engages with the slot, and a rotating wheel is fixedly connected to the top of the drive shaft.

[0015] As a further description of the above technical solution:

[0016] The rotating wheel is made of rubber, and an extrusion disc is fixedly connected to the outer wall of the drive shaft.

[0017] As a further description of the above technical solution:

[0018] The extrusion disc is slidably connected inside the connecting shaft, and a spring is provided on the outer wall of the transmission shaft.

[0019] As a further description of the above technical solution:

[0020] One end of the spring is fixedly connected to the inner wall of the connecting shaft, and the other end is fixedly connected to the side wall of the extrusion disc.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the gear is driven by a motor to rotate. Under the action of the meshing column, the gear will make linear motion, thereby driving the scraper to reciprocate on the inner wall of the vibrating screen. The scraper removes material from the screen inside the vibrating screen, which solves the problem of pharmaceutical intermediates with strong viscosity, easy agglomeration or high water content accumulating on the screen surface and clogging the screen holes, and significantly improves screening efficiency and production continuity.

[0023] 2. In this utility model, by rotating the rotating wheel, the spring is driven to rotate synchronously. While the spring is rotating, the locking shaft is driven to rotate inside the slot, thereby causing the locking shaft to disengage from the 914) locking, achieving the effect of quick installation and disassembly of the scraper. This solves the problem of difficult scraper installation and maintenance, and improves the efficiency and flexibility of component maintenance. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging, as proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the outer wall structure of the connecting plate of a sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging, as proposed in this utility model.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the scraper of a sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging, as proposed in this utility model.

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Vibrating screen; 2. Connecting plate; 3. Engaging column; 4. Fixed rod; 5. Sliding frame; 6. Slider; 7. Motor; 8. Gear; 9. Support rod; 10. Scraper; 11. Connecting shaft; 12. Transmission shaft; 13. Engaging shaft; 14. Slot; 15. Extrusion disc; 16. Rotary wheel; 17. Spring. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 One embodiment of this utility model is a sieving device for synthesizing pharmaceutical intermediates that is not easily clogged, including a vibrating screen 1, and an anti-clogging component is provided on the top of the vibrating screen 1 to prevent the vibrating screen 1 from clogging during sieving.

[0033] The anti-clogging component includes a connecting plate 2, which is fixedly connected to the top of the vibrating screen 1 on one side. Multiple meshing columns 3 are fixedly connected inside the connecting plate 2, arranged at equal intervals. The teeth of the meshing columns 3 are involute-shaped. These meshing columns 3 are distributed to form a stable support frame. A fixing rod 4 is fixedly connected to the top of the vibrating screen 1 to stabilize the structure of the entire anti-clogging component and prevent displacement of components due to vibration and external forces. A sliding frame 5 is slidably connected to the outer wall of the connecting plate 2, allowing the sliding frame 5 to slide along the outer wall of the connecting plate 2, thereby adjusting the position of the anti-clogging component. To adapt to screening requirements under different working conditions, a slider 6 is slidably connected inside the sliding frame 5. A motor 7 is fixedly connected to one side of the slider 6. A gear 8 is fixedly connected to the output end of the motor 7. The gear 8 meshes with the gap between multiple meshing columns 3. A support rod 9 is fixedly connected to one side of the sliding frame 5. A scraper 10 is slidably connected to the bottom of the support rod 9. The scraper 10 can effectively clean the screen surface and prevent material deposition. One side of the scraper 10 is in contact with the screen inside the vibrating screen 1. An installation component is provided inside the support rod 9. The installation component is used to facilitate quick installation and removal of the scraper 10 by the user.

[0034] Specifically, when screening pharmaceutical intermediates that are highly viscous, prone to agglomeration, have high moisture content, or contain fibrous impurities, and when traditional screen vibration methods are insufficient to prevent material accumulation and clogging of the screen holes, thus affecting screening efficiency and production continuity, the user first places the material inside the vibrating screen 1. The vibrating screen 1 then begins to vibrate, and the material is screened under the vibration. At this time, the motor 7 drives the gear 8 to rotate through its output end. The outer teeth of the gear 8 mesh with the gaps between multiple meshing columns 3. Under the pushing action of the meshing columns 3, the gear 8 performs linear reciprocating motion. The movement of the gear 8 also drives the sliding frame 5 to slide on the outer wall of the connecting plate 2, thereby pushing the scraper 10 to slide along the inner wall of the vibrating screen 1. The contact between the scraper 10 and the inner wall of the vibrating screen 1 effectively prevents the material from agglomerating on the screen surface, keeps the screen unobstructed, and avoids clogging.

[0035] Reference Figure 4 and Figure 5The installation assembly includes a connecting shaft 11 and a drive shaft 12. One side of the connecting shaft 11 is fixedly connected to the top of the support rod 9, providing stable support for the entire installation assembly and ensuring its stability during use. The drive shaft 12 is slidably connected inside the connecting shaft 11. A locking shaft 13 is fixedly connected to the outer wall of the drive shaft 12. A slot 14 is provided inside the scraper 10. The locking shaft 13 engages with the slot 14, thereby achieving quick locking and unlocking of the installation assembly and ensuring the stability and convenience of installation. A rotating wheel 16 made of rubber is fixedly connected to the top of the drive shaft 12. An extrusion plate 15 is fixedly connected to the outer wall of the drive shaft 12 and is slidably connected inside the connecting shaft 11. A spring 17 is provided on the outer wall of the drive shaft 12. The spring 17 can act as a buffer and provide elastic support for the locking shaft 13, ensuring that the locking shaft 13 can fit tightly against the inner wall of the slot 14. One end of the spring 17 is fixedly connected to the inner wall of the connecting shaft 11, and the other end is fixedly connected to the side wall of the extrusion plate 15.

[0036] Specifically, when the scraper 10 needs to be replaced, the user only needs to rotate the rotating wheel 16. The rotating wheel 16 drives the locking shaft 13 to rotate synchronously within the locking groove 14. As the rotation proceeds, the locking shaft 13 gradually disengages from the locking groove 14, thus unlocking the scraper 10. This greatly simplifies the disassembly process of the scraper 10, allowing the user to quickly disassemble and replace the scraper 10 without disassembling other parts. When installing the scraper 10, the user only needs to align the support rod 9 with the scraper 10, and then press the rotating wheel 16 to drive it. The engaging shaft 13 is inserted into the slot 14, and the rotating wheel 16 continues to rotate to ensure that the engaging shaft 13 can smoothly enter the slot 14. During the rotation, the movement of the rotating wheel 16 not only drives the engaging shaft 13, but also further drives the spring 17 to undergo elastic deformation through the extrusion plate 15. One end of the spring 17 is fixed to the inner wall of the connecting shaft 11, and the other end is connected to the extrusion plate 15, which can provide a reverse force for the engaging shaft 13, so that the engaging shaft 13 fits tightly against the inner wall of the slot 14, thereby realizing the rapid installation of the scraper 10.

[0037] Working Principle: When using this screening device for the synthesis of pharmaceutical intermediates, the material is first placed into the vibrating screen 1 by personnel. The vibrating screen 1 screens the material. Simultaneously, the output of the motor 7 drives the gear 8 to rotate. As the gear 8 rotates, the teeth on its outer wall mesh with the meshing column 3. Under the action of the meshing column 3, the gear 8 performs a linear reciprocating motion. This motion further drives the sliding frame 5 to slide against the outer wall of the connecting plate 2, thereby causing the scraper 10 to scrape along the inner wall of the vibrating screen 1, preventing material from clumping inside the screen and achieving an anti-clogging effect. When it is necessary to disassemble and replace the scraper 10, personnel directly rotate the rotating wheel 16 to... The locking shaft 13 rotates synchronously inside the slot 14. When it rotates to a certain position, the locking shaft 13 disengages from the slot 14 to unlock. After unlocking, the user can quickly remove the scraper 10. During installation, simply place the support rod 9 against the scraper 10, then press the rotating wheel 16 to drive the locking shaft 13 into the slot 14. Then rotate the rotating wheel 16 to make the locking shaft 13 rotate synchronously inside the slot 14. While pressing the rotating wheel 16, it will also further drive the pressing disc 15 to compress the spring 17, causing the spring 17 to elastically deform. The elastic restoring force of the spring 17 provides a counterforce to the locking shaft 13, making the locking shaft 13 fit tightly against the inner wall of the slot 14, thus achieving the effect of quickly installing the scraper 10.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sieving device for the synthesis of pharmaceutical intermediates that is not easily clogged, comprising a vibrating screen (1), characterized in that: The top of the vibrating screen (1) is provided with an anti-clogging component; The anti-clogging component includes a connecting plate (2), one side of which is fixedly connected to the top of the vibrating screen (1). Multiple meshing columns (3) are fixedly connected inside the connecting plate (2). A fixing rod (4) is fixedly connected to the top of the vibrating screen (1). A sliding frame (5) is slidably connected to the outer wall of the connecting plate (2). A slider (6) is slidably connected inside the sliding frame (5). A motor (7) is fixedly connected to one side of the slider (6). A gear (8) is fixedly connected to the output end of the motor (7). The gear (8) meshes with the gap between the multiple meshing columns (3). A support rod (9) is fixedly connected to one side of the sliding frame (5). A scraper (10) is slidably connected to the bottom of the support rod (9). One side of the scraper (10) contacts the screen inside the vibrating screen (1). An installation component is provided inside the support rod (9).

2. The sieving device for the synthesis of pharmaceutical intermediates that is not prone to clogging according to claim 1, characterized in that: The mounting assembly includes a connecting shaft (11) and a drive shaft (12). One side of the connecting shaft (11) is fixedly connected to the top of the support rod (9), and the drive shaft (12) is slidably connected inside the connecting shaft (11).

3. The sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging according to claim 2, characterized in that: The drive shaft (12) is fixedly connected to the outer wall of the drive shaft (13), and the scraper (10) has a groove (14) inside.

4. The sieving device for synthesizing pharmaceutical intermediates that is not prone to clogging according to claim 3, characterized in that: The engaging shaft (13) engages with the slot (14), and a rotating wheel (16) is fixedly connected to the top of the transmission shaft (12).

5. A sieving device for the synthesis of pharmaceutical intermediates that is not prone to clogging, as described in claim 4, characterized in that: The rotating wheel (16) is made of rubber, and the outer wall of the drive shaft (12) is fixedly connected to the extrusion plate (15).

6. A sieving device for the synthesis of pharmaceutical intermediates that is not prone to clogging, as described in claim 5, characterized in that: The extrusion disc (15) is slidably connected inside the connecting shaft (11), and a spring (17) is provided on the outer wall of the transmission shaft (12).

7. A sieving device for the synthesis of pharmaceutical intermediates that is not prone to clogging, as described in claim 6, characterized in that: One end of the spring (17) is fixedly connected to the inner wall of the connecting shaft (11), and the other end is fixedly connected to the side wall of the extrusion plate (15).

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