Negative pressure weighing operation room air purification equipment

Abstract

The utility model relates to the technical field of air purification equipment, and discloses negative pressure weighing operation room air purification equipment which comprises an operation room, an air supply assembly used for supplying air is arranged at the top of the operation room, the input end of the air supply assembly is fixedly connected with an exhaust pipe, and the outer portion of the exhaust pipe is fixedly connected with a supporting plate. A driving assembly used for providing power is arranged on the front side of the top of the supporting plate, a sliding plate is fixedly connected to the rear side of the driving assembly, a plurality of fixing frames are fixedly connected to the right side of the sliding plate, sliding grooves are formed in the fixing frames, connecting shafts are slidably connected to the interiors of the fixing frames, and the connecting shafts are fixedly connected to the right side of the sliding plate. And the exteriors of the multiple connecting shafts are rotationally connected with rotating plates. According to the utility model, the air inlet quantity can be flexibly adjusted according to actual requirements, a proper air flowing condition is provided for operation, the accuracy and efficiency of the operation are improved, and the smooth operation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, and in particular to an air purification device for a negative pressure weighing workshop. Background Technology

[0002] Negative pressure weighing workshops are dedicated areas in the pharmaceutical industry used for critical processes such as weighing, dispensing, and sampling of medicines. Their design aims to provide a localized negative pressure environment to ensure high cleanliness and prevent cross-contamination. This equipment utilizes a vertical unidirectional airflow design to effectively collect and treat particulate matter such as dust generated within the work area, thereby protecting medicines from external contamination and ensuring the health and safety of operators. In practical applications, negative pressure weighing workshops are widely used in processes such as dust and particulate matter weighing, batching, and mixing in industries such as chemical, food, and pharmaceutical. Their efficient dust removal function and simple operation make the weighing process more environmentally friendly and energy-saving, while also improving work efficiency.

[0003] However, some existing negative pressure weighing workshop air purification equipment cannot effectively adjust the air intake volume according to actual work needs during use. When it is necessary to increase or decrease the airflow to adapt to different production conditions, its operating status cannot be flexibly adjusted to meet this requirement. This not only leads to energy waste and prevents operation at suboptimal efficiency, but also affects the quality of the working environment. Especially in situations with strict cleanliness requirements, inappropriate air intake volume can introduce excessive impurities or cause unnecessary pressure fluctuations, thereby affecting product safety and quality. Therefore, to address these shortcomings, a negative pressure weighing workshop air purification device is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an air purification device for negative pressure weighing workshops, which aims to improve the problem that some existing negative pressure weighing workshop air purification devices cannot adjust the air intake volume as needed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air purification device for a negative pressure weighing workshop includes a working chamber. An air supply assembly for supplying air is installed on the top of the working chamber. An exhaust pipe is fixedly connected to the input end of the air supply assembly. A support plate is fixedly connected to the outside of the exhaust pipe. A drive assembly for providing power is installed on the top front side of the support plate. A sliding plate is fixedly connected to the rear side of the drive assembly. Multiple fixed frames are fixedly connected to the right side of the sliding plate. Each of the multiple fixed frames has a sliding groove inside. A connecting shaft is slidably connected inside each of the multiple fixed frames. A rotating plate is rotatably connected to the outside of each of the multiple connecting shafts. A fixed shaft is fixedly connected to the right side of each of the multiple rotating plates. A limit plate is fixedly connected to the top of each of the multiple fixed shafts. A filter plate is fixedly connected to the left side inside the exhaust pipe. An air regulating plate is fixedly connected to the outside of each of the multiple fixed shafts. A sliding groove is opened on the top of the support plate.

[0007] As a further description of the above technical solution:

[0008] The air supply assembly includes a mounting plate, the bottom of which is fixedly connected to the top of the operating chamber. A blower is mounted on the left side of the mounting plate, and an air inlet pipe is fixedly connected to the output end of the blower.

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

[0010] The drive assembly includes a mounting block, the bottom of which is fixedly connected to the top front side of the support plate, a cylinder is mounted on the rear side of the mounting block, a push rod is fixedly connected to the drive end of the cylinder, and a connecting plate is fixedly connected to the rear side of the push rod.

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

[0012] The air inlet pipe is fixedly connected to the outside of a fixing ring, the air inlet pipe is rotatably connected to a rotating frame, the rotating frame is fixedly connected to the inside of a connecting bracket, a fan is fixedly connected to the top of the connecting bracket, multiple ventilation holes are opened at the bottom of the rotating frame, and multiple air outlet pipes are fixedly connected to the bottom of the rotating frame.

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

[0014] A mounting frame is fixedly connected to the rear side of the work chamber, a blower 2 is installed inside the mounting frame, a filter plate 2 is fixedly connected to the input end of the blower 2, and a shielding curtain is fixedly connected to the front side of the work chamber.

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

[0016] The fixed shaft is externally rotatably connected to the inside of the support plate, and the air regulating plate is externally rotatably connected to the inside of the exhaust pipe.

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

[0018] The outside of the slide plate is slidably connected to the inside of the slide groove, and the bottom of the connecting plate is slidably connected to the top of the support plate;

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

[0020] The outer part of the rotating frame is rotatably connected to the inner top side of the working chamber, and the bottom of the support plate is fixedly connected to the top of the working chamber.

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

[0022] 1. In this utility model, the cylinder drives the connecting plate to slide on the top of the support plate via the push rod, thereby causing the slide plate to move. Subsequently, the connecting shaft slides in the sliding groove inside the fixed frame, thereby causing the fixed shaft to rotate. Finally, the air regulating plate rotates inside the exhaust pipe, so that the angle between the air regulating plate and the inner wall of the air inlet pipe changes with the rotation of the fixed shaft, thereby adjusting the ventilation cross-sectional area of ​​the air inlet pipe and achieving the purpose of adjusting the air intake. The air intake can be flexibly adjusted according to actual needs, providing suitable air flow conditions for operation, improving the accuracy and efficiency of operation, ensuring the smooth progress of operation, and at the same time, helping to save energy, avoid unnecessary energy waste, and reduce the operating cost of the equipment.

[0023] 2. In this invention, after the air enters the rotating frame through the inlet duct, the air impacts the fan, causing it to rotate and pushing the air towards the ventilation holes and outlet duct. When the fan rotates, it drives the rotating frame to rotate as well. The outlet duct at the bottom of the rotating frame moves in a circular motion with the rotation of the frame, allowing the air to flow out to various locations within the working chamber over a wider area. This effectively expands the airflow range and allows the air to flow out in a dispersed manner, avoiding localized air concentration or poor flow. This not only improves the accuracy and stability of the operation but also helps to more quickly remove pollutants and odors generated during the operation, keeping the air in the working chamber fresh and creating a favorable environmental condition for negative pressure weighing operations. Attached Figure Description

[0024] Figure 1 This is a perspective view of an air purification device for a negative pressure weighing workshop proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the air regulating plate structure of an air purification device for a negative pressure weighing workshop proposed in this utility model.

[0026] Figure 3This is a schematic diagram of the exhaust pipe structure of an air purification device for a negative pressure weighing workshop proposed in this utility model;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the mounting plate structure of an air purification device for a negative pressure weighing workshop proposed in this utility model;

[0029] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0030] Figure 7 This is a schematic diagram of the installation frame structure of an air purification device for a negative pressure weighing workshop proposed in this utility model.

[0031] Legend:

[0032] 1. Operating chamber; 2. Mounting plate; 3. Blower 1; 4. Exhaust duct; 5. Support plate; 6. Mounting block; 7. Cylinder; 8. Push rod; 9. Connecting plate; 10. Slide plate; 11. Fixing frame; 12. Sliding groove; 13. Connecting shaft; 14. Rotating plate; 15. Fixing shaft; 16. Limiting plate; 17. Filter plate 1; 18. Air regulating plate; 19. Sliding groove; 20. Air inlet duct; 21. Fixing ring; 22. Rotating frame; 23. Connecting frame; 24. Fan; 25. Ventilation hole; 26. Air outlet duct; 27. Mounting frame; 28. Blower 2; 29. ​​Filter plate 2; 30. Shielding curtain. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 and Figure 2This utility model provides an embodiment of an air purification device for a negative pressure weighing work area, comprising a work chamber 1, which is the main space of the entire negative pressure weighing work area, providing a space for various operations and air purification processes. An air supply assembly for air supply is installed on the top of the work chamber 1. The air supply assembly includes a mounting plate 2, the bottom of which is fixedly connected to the top of the work chamber 1. A blower 3 is installed on the left side of the mounting plate 2, providing a stable mounting base for the blower 3. The blower 3 draws in external air and delivers it into the work chamber 1 through an air inlet pipe 20 at its output end. The output end of the blower 3 is fixedly connected to the air inlet pipe 20, and the input end of the air supply assembly is fixedly connected to an exhaust pipe 4. A support plate 5 is fixedly connected to the outside of the exhaust pipe 4, and the bottom of the support plate 5 is fixedly connected to the top of the work chamber 1.

[0035] Reference Figures 2 to 4 A drive assembly for providing power is provided on the top front side of the support plate 5. The drive assembly includes a mounting block 6, the bottom of which is fixedly connected to the top front side of the support plate 5. The mounting block 6 provides a mounting position for the cylinder 7, ensuring that the cylinder 7 can be stably fixed on the support plate 5. The cylinder 7 is mounted on the rear side of the mounting block 6. A push rod 8 is fixedly connected to the drive end of the cylinder 7. By activating the cylinder 7, its drive end can push the push rod 8 to move linearly. A connecting plate 9 is fixedly connected to the rear side of the push rod 8. The bottom of the connecting plate 9 is slidably connected to the top of the support plate 5. When the push rod 8 pushes the connecting plate 9, the connecting plate 9 slides on the top of the support plate 5. A sliding plate 10 is fixedly connected to the rear side of the drive assembly. When the sliding plate 10 moves, it will drive the fixing frame 11 and the structure connected to the fixing frame 11 to move together, thereby adjusting the air regulating plate 18 and thus adjusting the air intake volume.

[0036] Reference Figures 2 to 4Multiple fixed brackets 11 are fixedly connected to the right side of the slide plate 10. Each fixed bracket 11 has a sliding groove 12 inside, and a connecting shaft 13 is slidably connected inside each fixed bracket 11. The sliding groove 12 provides a sliding track for the connecting shaft 13. When the slide plate 10 moves the fixed brackets 11, the connecting shaft 13 slides within the sliding groove 12, allowing it to move along a predetermined trajectory. Rotating plates 14 are rotatably connected to the outside of each connecting shaft 13. When the connecting shaft 13 slides within the sliding groove 12, the rotating plates 14 rotate around the connecting shaft 13, converting the linear displacement of the connecting shaft 13 into the rotational motion of the fixed shaft 15. Fixed shafts 15 are fixedly connected to the right side of each rotating plate 14. The outside of the fixed shafts 15 is rotatably connected inside the support plate 5. When the rotating plates 14 drive the fixed shafts 15 to rotate, the air regulating plate 18 also rotates, thereby changing the ventilation cross-sectional area within the air inlet duct 20 and adjusting the air intake volume. Limiting plates 16 are fixedly connected to the top of multiple fixed shafts 15. A filter plate 17 is fixedly connected to the left side of the inside of the exhaust pipe 4. The filter plate 17 effectively filters impurities, dust, and particulate matter in the air when the air enters the exhaust pipe 4, protecting the normal operation of the equipment. It also improves the quality of the air entering the work chamber 1, providing a relatively clean air environment for the workers and ensuring the health of the workers and the smooth progress of the work.

[0037] Multiple fixed shafts 15 are externally fixedly connected to air regulating plates 18. The external air regulating plates 18 are rotatably connected to the inside of the exhaust duct 4. When the drive assembly is working, the fixed shafts 15 drive the air regulating plates 18 to rotate, changing the angle between the air regulating plates 18 and the inner wall of the air inlet duct 20, thereby adjusting the ventilation cross-sectional area of ​​the air inlet duct 20. When the angle increases, the ventilation cross-sectional area increases and the air intake increases; conversely, when the angle decreases, the ventilation cross-sectional area decreases and the air intake decreases. The top of the support plate 5 is provided with a sliding groove 19, and the external sliding plate 10 is slidably connected to the inside of the sliding groove 19.

[0038] Reference Figures 5 to 7A fixing ring 21 is fixedly connected to the outside of the air inlet duct 20, and a rotating frame 22 is rotatably connected to the outside of the air inlet duct 20. The rotating frame 22 is rotatably connected to the inside top side of the work chamber 1. A connecting bracket 23 is fixedly connected inside the rotating frame 22, and a fan 24 is fixedly connected to the top of the connecting bracket 23. When air enters the rotating frame 22 through the air inlet duct 20, the air impacts the fan 24, causing the fan 24 to rotate. The rotation of the fan 24 not only agitates the air, making it more evenly mixed within the rotating frame 22, but also generates a certain amount of airflow, pushing the air towards the ventilation holes 25 and the air outlet duct 26, further promoting the circulation and distribution of air within the work chamber 1. Multiple ventilation holes 25 are provided at the bottom of the rotating frame 22, allowing the air to flow out in a more dispersed manner, avoiding localized air concentration or poor airflow. Multiple air outlet pipes 26 are fixedly connected to the bottom of the rotating frame 22. The air outlet pipes 26 move in a circular motion as the rotating frame 22 rotates, thereby increasing the airflow range. A mounting frame 27 is fixedly connected to the rear side of the working chamber 1. A blower 28 is installed inside the mounting frame 27. The blower 28 draws the air in the working chamber 1 to the outside. A filter plate 29 is fixedly connected to the input end of the blower 28. A curtain 30 is fixedly connected to the front side of the working chamber 1.

[0039] Working Principle: When adjusting the air intake volume during the use of this air purification equipment, cylinder 7 is first activated. Cylinder 7 drives the push rod 8 and connecting plate 9 to move, which in turn moves the sliding plate 10. This causes the fixed frame 11 to move along with the sliding plate 10, resulting in the connecting shaft 13 sliding inside the sliding groove 12. The left side of the rotating plate 14 rotates outside the connecting shaft 13, and the rotation of the rotating plate 14 drives the fixed shaft 15 to rotate. This achieves the rotation of the air regulating plate 18, thus realizing the desired air intake volume adjustment. The air intake volume is adjusted so that during the air intake process, the air is filtered and purified by the filter plate 17. Then, the air enters the interior of the rotating frame 22 through the air intake pipe 20. At this time, the air impacts the fan 24, causing the fan 24 to rotate, which in turn drives the rotating frame 22 to rotate. The air then flows out through the ventilation hole 25 and the air outlet pipe 26, making the air outlet more uniform. At this time, the blower 28 at the bottom of the working chamber 1 draws the internal air to the outside, forming a negative pressure, which ensures the normal operation of this negative pressure weighing working room.

[0040] 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. An air purification device for a negative pressure weighing work area, comprising a work room (1), characterized in that: The top of the work chamber (1) is provided with an air supply assembly for supplying air. The input end of the air supply assembly is fixedly connected to an exhaust pipe (4). The outside of the exhaust pipe (4) is fixedly connected to a support plate (5). The front top of the support plate (5) is provided with a drive assembly for providing power. The rear side of the drive assembly is fixedly connected to a slide plate (10). The right side of the slide plate (10) is fixedly connected to multiple fixed frames (11). Each of the multiple fixed frames (11) has a sliding groove (12) inside. 1) The interior of each of the multiple connecting shafts (13) is slidably connected to a connecting shaft (13), the exterior of each of the multiple connecting shafts (13) is rotatably connected to a rotating plate (14), the right side of each of the multiple rotating plates (14) is fixedly connected to a fixed shaft (15), the top of each of the multiple fixed shafts (15) is fixedly connected to a limiting plate (16), the left side of the interior of the exhaust pipe (4) is fixedly connected to a filter plate (17), the exterior of each of the multiple fixed shafts (15) is fixedly connected to an air regulating plate (18), and the top of the support plate (5) is provided with a sliding groove (19).

2. The air purification equipment for a negative pressure weighing workshop according to claim 1, characterized in that: The air supply assembly includes a mounting plate (2), the bottom of which is fixedly connected to the top of the work chamber (1). A blower (3) is installed on the left side of the mounting plate (2), and an air inlet pipe (20) is fixedly connected to the output end of the blower (3).

3. The air purification equipment for a negative pressure weighing workshop according to claim 1, characterized in that: The drive assembly includes a mounting block (6), the bottom of which is fixedly connected to the front top of the support plate (5), and a cylinder (7) is mounted on the rear side of the mounting block (6). A push rod (8) is fixedly connected to the drive end of the cylinder (7), and a connecting plate (9) is fixedly connected to the rear side of the push rod (8).

4. The air purification equipment for a negative pressure weighing workshop according to claim 2, characterized in that: The air inlet pipe (20) is fixedly connected to a fixing ring (21) on the outside, and a rotating frame (22) is rotatably connected to the outside of the air inlet pipe (20). A connecting frame (23) is fixedly connected inside the rotating frame (22), and a fan (24) is fixedly connected to the top of the connecting frame (23). Multiple ventilation holes (25) are opened at the bottom of the rotating frame (22), and multiple air outlet pipes (26) are fixedly connected to the bottom of the rotating frame (22).

5. The air purification equipment for a negative pressure weighing workshop according to claim 1, characterized in that: The rear side of the work chamber (1) is fixedly connected to an installation frame (27), and a blower (28) is installed inside the installation frame (27). A filter plate (29) is fixedly connected to the input end of the blower (28), and a curtain (30) is fixedly connected to the front side of the work chamber (1).

6. The air purification equipment for a negative pressure weighing workshop according to claim 1, characterized in that: The fixed shaft (15) is externally rotatably connected to the inside of the support plate (5), and the air regulating plate (18) is externally rotatably connected to the inside of the exhaust pipe (4).

7. The air purification equipment for a negative pressure weighing workshop according to claim 3, characterized in that: The outside of the slide plate (10) is slidably connected to the inside of the slide groove (19), and the bottom of the connecting plate (9) is slidably connected to the top of the support plate (5).

8. The air purification equipment for a negative pressure weighing workshop according to claim 4, characterized in that: The external rotating frame (22) is rotatably connected to the internal top side of the working chamber (1), and the bottom of the support plate (5) is fixedly connected to the top of the working chamber (1).

Images