Ventilation device for pharmaceutical processing

Abstract

The utility model relates to a pharmaceutical processing technical field especially relates to a ventilation unit for pharmaceutical processing. Including the embedded frame, embedded frame detachable assembly is in the pharmacy warehouse wall body, embedded frame is arranged as the rectangular frame board structure of both ends through, and embedded frame one side fixedly set has one -way axial flow fan, embedded frame both sides are provided with a pair of folding assembly arm, and the assembly arm one end is provided with the assembly screw hole, and the embedded frame inner wall sliding installation has the filter support, and the filter support, embedded frame top are tightly connected through two combination bolts, and the filter support one side is detachably connected with three layers filter plate, and three layers filter plate are provided with washable polyester pleat formula inside prefilter plate, middle high -efficient filter plate of pleat formula high -efficient micro -particle filter core, outside filter plate of activated carbon particle layer from inside to outside respectively. The utility model wants to solve the technical problem is: the ventilation unit for pharmaceutical processing of existing poor expandability, inconvenient maintenance, limited the flexible regulation and control of production environment.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical processing technology, and in particular to a ventilation device for pharmaceutical processing. Background Technology

[0002] Pharmaceutical processing typically takes place in GMP-compliant cleanrooms, often constructed from stainless steel or epoxy resin panels, offering excellent sealing and corrosion resistance. A common example is the GMP-FD2000 series solid dosage form container, which features multiple internal racks or flat shelves for bulk storage of tablets, capsules, and other solid pharmaceutical products. The spacing between layers is maintained at 20-30 cm to ensure adequate airflow. The outer walls of the container are usually equipped with ductwork connections for connecting ventilation units or filtration systems. Temperature, humidity, and differential pressure sensors are also installed inside the container for real-time environmental monitoring.

[0003] Existing ventilation systems for pharmaceutical processing mostly consist of fixed fans installed on the top or side walls of the storage chamber, achieving gas exchange between the inside and outside of the chamber through unidirectional forced airflow. The structure of such systems typically includes: an integrated storage chamber, a built-in filter, an external air supply duct, and a fixedly installed fan. While this achieves some degree of air circulation within the chamber, its scalability is poor. For example, when the storage space is expanded or the number of processing batches increases, because the fan is often connected to the chamber by welding or bolts, any fan failure or filter replacement requires complete disassembly or shutdown for maintenance, causing inconvenience and disrupting production continuity. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing ventilation devices for pharmaceutical processing have poor expandability, are inconvenient to maintain, and limit the flexible control of the production environment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a ventilation device for pharmaceutical processing, including a fitted frame, which is detachably assembled on the wall of a pharmaceutical storage chamber. The fitted frame is configured as a rectangular frame plate structure with both ends through it, and a unidirectional axial flow fan is fixedly installed on one side of the fitted frame. A pair of folding assembly arms are provided on both sides of the fitted frame, and an assembly screw hole is opened at one end of the assembly arm. A filter bracket is slidably installed on the inner wall of the fitted frame. The filter bracket and the top of the fitted frame are fastened together by two combination bolts. Three filter plates are detachably connected to one side of the filter bracket. The three filter plates are respectively configured from the inside out as a washable polyester pleated inner pre-filter plate, a pleated high-efficiency particulate filter middle high-efficiency filter plate, and an activated carbon granular layer outer filter plate.

[0006] As a further improvement of this utility model, the fitting frame has storage grooves on both sides, and a rotating shaft is provided in the storage groove. The outer wall of one side of the rotating shaft is fixedly connected to the assembly arm.

[0007] As a further improvement of this utility model, a friction pad made of nitrile rubber is provided between the rotating shaft and the storage groove.

[0008] As a further improvement of this utility model, the filter bracket is provided with gripping grooves on both sides.

[0009] As a further improvement of this utility model, a pair of mounting guide rails are fixedly provided on the inner wall of the fitting frame, and the mounting guide rails are located at the top and bottom of the fitting frame wall, and the filter bracket is provided with a mounting guide groove that slides thereon at the corresponding position.

[0010] As a further improvement of this utility model, the inner pre-filter plate, the middle high-efficiency filter plate, and the outer filter plate are all fixedly connected to side plates on both sides, and the center of the side plate is threaded with a fixing bolt that is fastened to the filter bracket.

[0011] The beneficial effects of this invention are as follows: First, the combination of three-layer graded filter plates achieves step-by-step purification from large particles to microparticles and then to organic gases through the synergistic effect of different filter media functions, ensuring the cleanliness and odor control of the air within the pharmaceutical processing chamber. Second, the mounting rails and mounting grooves provide linear sliding guidance, allowing filter plate assembly replacement to be completed within seconds. Compared to traditional welded or bolted structures, this significantly shortens maintenance time and reduces the impact of downtime on production continuity. Simultaneously, the interlocking frame adopts an embeddable design, adaptable to different models of GMP-FD series pharmaceutical processing chambers, enabling flexible adjustment of the device at different production scales. Third, the design of the folding assembly arm and storage groove facilitates the storage of components when not in use, reducing the interference of protruding structures on the operating space around the chamber. Friction pads provide moderate damping, ensuring both operational feel and structural stability. This not only improves the maintainability and expandability of the ventilation system but also ensures environmental cleanliness and production safety during pharmaceutical processing, demonstrating significant practical value and promotional significance. Attached Figure Description

[0012] Figure 1 This is an overall schematic diagram of a ventilation device for pharmaceutical processing according to this utility model;

[0013] Figure 2 This is a component disassembly diagram of a ventilation device for pharmaceutical processing according to this utility model;

[0014] Figure 3 This is a component illustration of a ventilation device for pharmaceutical processing according to this utility model;

[0015] Figure 4This is a diagram showing part a of a ventilation device for pharmaceutical processing according to this utility model;

[0016] As shown in the figure: 1. Fitting frame; 2. Unidirectional axial flow fan; 3. Assembly arm; 4. Side plate; 5. Filter bracket; 6. Inner pre-filter plate; 7. Middle high-efficiency filter plate; 8. Outer filter plate; 9. Storage groove; 10. Holding groove; 11. Mounting guide rail; 12. Mounting guide groove. Detailed Implementation

[0017] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0018] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] This utility model provides the following: Figure 1 , 2As shown in Figures 3 and 4, a ventilation device for pharmaceutical processing includes a fitted frame 1, which is detachably mounted on the wall of a pharmaceutical storage chamber. The fitted frame 1 is a rectangular frame structure with both ends extending through it. A unidirectional axial flow fan 2 is fixedly mounted on one side of the fitted frame 1. A pair of folding mounting arms 3 are provided on both sides of the fitted frame 1, with mounting screw holes at one end of each arm 3. A filter bracket 5 is slidably mounted on the inner wall of the fitted frame 1, and gripping grooves 10 are provided on both sides of the filter bracket 5 to facilitate insertion and removal of the filter bracket 5 and to facilitate gripping by the user. A pair of mounting guide rails 11 are fixedly mounted on the inner wall of the fitted frame 1, located at the top and bottom of the wall of the fitted frame 1. The filter bracket 5 has corresponding mounting guide grooves 12 that slide along it, providing auxiliary guidance during insertion. The filter support 5 and the interlocking frame 1 are fastened together at the top by two combination bolts. Three filter plates are detachably connected to one side of the filter support 5. From the inside out, the three filter plates are: a washable polyester pleated inner pre-filter plate 6, a pleated high-efficiency particulate filter cartridge middle high-efficiency filter plate 7, and an activated carbon granular layer outer filter plate 8. Side plates 4 are fixedly connected to both sides of the inner pre-filter plate 6, the middle high-efficiency filter plate 7, and the outer filter plate 8. The center of each side plate 4 is threaded with a fixing bolt that is fastened to the filter support 5; this provides reinforcement.

[0021] As attached Figure 3 As shown, the inner pre-filter plate 6 is configured as the first layer of filtration, close to the inner side of the chamber, intercepting larger particles, dust, and fibrous materials, extending the life of subsequent filter media, and preventing powder from directly entering the subsequent filter layer. It is preferably a washable mesh metal or polyester pleated filter screen with a mesh size ranging from 100 to 300 mesh and a thickness of 5 to 20 mm. The middle high-efficiency filter plate 7 is configured as the second layer of filtration, intercepting particulate matter and fine dust, ensuring that the air entering the chamber or discharged to the outside meets the specified particle cleanliness level. It is preferably a pleated high-efficiency particulate filter element or HEPA filter media, with a rigid frame to ensure it does not deform. The outer adsorption plate 8 is configured as the third layer of filtration, adsorbing volatile organic compounds (VOCs), odors, residual solvent vapors, etc., in the incoming and outgoing gases, protecting the products inside the chamber and improving the quality of the exhaust air. The adsorption layer is preferably an activated carbon granular layer, and the carrier can be an aluminum frame or a stainless steel frame filled with adsorption media.

[0022] In addition, as attached Figure 1 As shown, the fitting frame 1 has storage grooves 9 on both sides, and a rotating shaft is installed in the storage groove 9. The outer wall of one side of the rotating shaft is fixedly connected to the assembly arm 3, which facilitates the storage of the foldable assembly arm 3. At the same time, a friction pad made of nitrile rubber is provided between the rotating shaft and the storage groove 9; the damping torque is set to 0.3~0.6 N·m, which provides a damping effect between the rotating shaft and the storage groove 9. Due to the presence of the friction pad made of nitrile rubber, the rotating shaft is prevented from rotating too sensitively, which would make it difficult for the assembly arm 3 to be stored in the storage groove 9.

[0023] Working Principle: In practical implementation, the entire filter assembly achieves quick assembly and disassembly through the sliding cooperation between the filter bracket 5, the mounting rail 11, and the mounting guide groove 12. The gripping groove 10 facilitates disassembly and assembly operations within a limited space. When the filter plates need to be replaced or cleaned, the operator loosens the fixing bolts and can pull out the filter bracket 5 along the mounting rail 11. The three filter plates 6, 7, and 8 remain stably arranged under the constraint of the side plate 4, preventing the filter element from falling off or becoming contaminated due to improper operation. The storage grooves 9 on both sides of the fitting frame 1 and the foldable assembly arm 3 achieve a foldable structure through the rotation shaft. The friction pad provides a damping torque of 0.3 to 0.6 N·m, ensuring that the assembly arm 3 remains stable during storage and unfolding, preventing it from swaying due to its own weight and affecting the installation accuracy.

[0024] When the pharmaceutical processing chamber needs to exchange air with the outside environment, the operator secures the fitted frame 1 to the ventilation interface in the chamber wall using the assembly arm 3. After the unidirectional axial flow fan 2 is activated, a directional airflow is created, allowing air to enter the fitted frame 1 at a velocity of 0.5–1.2 m / s. The air first undergoes primary interception via the inner pre-filter 6 located on one side of the chamber. This layer effectively blocks dust particles and fibrous materials larger than 10 micrometers, preventing them from directly entering the chamber. The airflow then passes through the intermediate high-efficiency filter 7, where the HEPA filter achieves a ≥99.97% interception efficiency for 0.3-micrometer particles, ensuring air cleanliness meets ISO Class 7 standards. Finally, the airflow flows through the outer filter 8, where the activated carbon granular layer physically adsorbs and chemically binds VOCs, residual solvent vapors, and odors, maintaining the residual organic matter level of the air discharged or entering the chamber below 0.5 ppm. Through these actions, the entire device achieves efficient filtration while providing a detachable, replaceable, and easily maintained ventilation and purification effect.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ventilation device for pharmaceutical processing, comprising a fitting frame (1), characterized in that: The interlocking frame (1) is detachably assembled on the wall of the pharmaceutical storage chamber. The interlocking frame (1) is a rectangular frame structure with two through ends. A unidirectional axial flow fan (2) is fixedly installed on one side of the interlocking frame (1). A pair of folding assembly arms (3) are provided on both sides of the interlocking frame (1). An assembly screw hole is opened at one end of the assembly arm (3). A filter bracket (5) is slidably installed on the inner wall of the interlocking frame (1). The filter bracket (5) and the top of the interlocking frame (1) are fastened together by two combination bolts. A three-layer filter plate is detachably connected to one side of the filter bracket (5). The three layers of filter plates are respectively set as a washable polyester pleated inner pre-filter plate (6), a pleated high-efficiency particulate filter middle high-efficiency filter plate (7), and an activated carbon granule layer outer filter plate (8) from the inside to the outside.

2. The ventilation device for pharmaceutical processing according to claim 1, characterized in that: The fitting frame (1) has storage grooves (9) on both sides, and a rotating shaft is provided in the storage grooves (9). The outer wall of one side of the rotating shaft is fixedly connected to the assembly arm (3).

3. A ventilation device for pharmaceutical processing according to claim 2, characterized in that: A friction pad made of nitrile rubber is provided between the rotating shaft and the receiving groove (9).

4. A ventilation device for pharmaceutical processing according to claim 1, characterized in that: The filter support (5) has gripping grooves (10) on both sides.

5. A ventilation device for pharmaceutical processing according to claim 1, characterized in that: A pair of mounting guide rails (11) are fixedly provided on the inner wall of the interlocking frame (1), and the mounting guide rails (11) are located at the top and bottom of the wall of the interlocking frame (1), and the filter bracket (5) is provided with a mounting guide groove (12) that slides thereon.

6. A ventilation device for pharmaceutical processing according to claim 1, characterized in that: The inner pre-filter plate (6), the middle high-efficiency filter plate (7), and the outer filter plate (8) are all fixedly connected to side plates (4), and the center of the side plate (4) is threaded with a fixing bolt that is fastened to the filter bracket (5).

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