Variable air volume ventilation energy-saving device for laboratory

Abstract

The utility model relates to the technical field of ventilation devices, and discloses a laboratory variable air volume ventilation energy-saving device which comprises a ventilation pipe, a fixing ring is fixedly connected to the middle of the ventilation pipe, a plurality of rotating rods are rotationally connected to the inner wall of the fixing ring, and the other ends of the rotating rods are rotationally connected with a center column. A blade is arranged in the middle of the rotating rod, one end of the rotating rod penetrates through the outer wall of the fixing ring and is fixedly connected with a fixing piece, a sliding groove is formed in the lower end of the outer wall of the fixing piece, a rotating ring is rotationally connected to the outer wall of the fixing ring, and a plurality of first fixing piles are fixedly connected to the outer wall of the rotating ring; the outer wall of the first fixing pile is in sliding connection with the inner wall of the sliding groove. According to the utility model, the blades are controlled to turn over and the ventilation quantity is adjusted by adjusting the telescopic rod and enabling the fixed sheet to rotate around the rotating rod, the ventilation quantity can be quickly changed by adjusting the length of the telescopic rod, and the blades are fixed through the screws and are convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of ventilation device technology, and in particular to a laboratory variable air volume ventilation energy-saving device. Background Technology

[0002] Laboratory ventilation systems are crucial for ensuring the safety of the experimental environment. Traditional ventilation systems often employ constant air volume designs, which cannot dynamically adjust the ventilation volume according to experimental needs. With increasing demands for energy conservation and environmental protection, variable air volume (VAV) ventilation technology has gradually gained attention. Currently, there are some VAV ventilation devices on the market, but they generally suffer from low control precision, slow response speed, and high energy consumption. Furthermore, existing equipment has poor adaptability to complex experimental environments and cannot meet the needs of different experimental conditions.

[0003] A search revealed Chinese Patent Publication No. CN210647674U, which discloses a laboratory intelligent fume hood control device. The device includes a fume hood with an exhaust assembly installed on one side of its exterior and a control assembly installed on the other side. The exhaust assembly includes a side exhaust vent, an upper exhaust vent, a first variable air volume valve, a second variable air volume valve, a first gas detection probe, a second gas detection probe, a vent, a connecting rod, a baffle, a first gear, a first rack, a second rack, a second gear, a motor, and an alarm. The side exhaust vent is located on one side of the fume hood, and the upper exhaust vent is located at the top of the fume hood. A first variable air volume valve and a second variable air volume valve are respectively installed at the outer ends of the side and upper exhaust vents. A first gas detection probe is installed inside the fume hood below the side exhaust vent. This invention has a simple structure and is easy to use. The device facilitates the discharge of harmful gases from inside the fume hood, ensuring both fan operation and device airtightness, making it more energy-efficient. However, the aforementioned structure has low accuracy in controlling ventilation volume and a slow response time. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a laboratory variable air volume ventilation energy-saving device, which aims to improve the problems of low accuracy in controlling ventilation volume and excessively slow response in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a laboratory variable air volume ventilation energy-saving device, comprising a ventilation pipe, a fixed ring fixedly connected to the middle of the ventilation pipe, a plurality of rotating rods rotatably connected to the inner wall of the fixed ring, a central column rotatably connected to the other end of the rotating rod, a blade provided in the middle of the rotating rod, a fixed plate fixedly connected to one end of the rotating rod through the outer wall of the fixed ring, a sliding groove provided at the lower end of the outer wall of the fixed plate, a rotating ring rotatably connected to the outer wall of the fixed ring, a plurality of fixed stakes fixedly connected to the outer wall of the rotating ring, the outer wall of the fixed stakes slidingly connected to the inner wall of the sliding groove, and a filter mechanism provided at one end of the ventilation pipe for ventilation pretreatment.

[0006] The above technical solution involves a fixed ring fixed in the middle of the ventilation duct. Multiple rotating rods are evenly distributed on the inner wall of the fixed ring, allowing them to rotate freely within the ring. The other end of each rotating rod is connected to a central column, enabling it to rotate around the column. An adjustable airflow vane is installed in the middle of each rotating rod. One end of the rotating rod passes through the outer wall of the fixed ring and connects to a fixed plate. A groove is provided at the lower outer end of the fixed plate. A rotating ring is rotatably connected to the outer wall of the fixed ring. Multiple fixed posts are fixedly installed on the outer wall of the rotating ring. The outer wall of each fixed post slides against the inner wall of the groove on the fixed plate, thus achieving precise adjustment.

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

[0008] The filtration mechanism includes a fan, one end of which is connected to one end of a ventilation pipe. An air inlet pipe is fixedly connected to the outer wall of the fan via a flange. A filter cartridge is provided in the middle of the air inlet pipe. A filter screen is provided on the inner wall of the filter cartridge. A cover is provided on the top of the filter cartridge.

[0009] The above technical solution connects one end of the fan to the other end of the ventilation duct, ensuring smooth airflow. An air inlet pipe is fixedly connected to the outer wall of the fan via a flange. A filter cartridge is installed in the middle of the air inlet pipe, and a filter screen is installed on the inner wall of the filter cartridge. The filter screen can effectively intercept impurities and particulate matter in the air. To facilitate maintenance and replacement of the filter screen, a cover is installed on the top of the filter cartridge. The cover can be easily opened and closed to facilitate inspection and cleaning of the inside of the filter cartridge.

[0010] As a further description of the above technical solution:

[0011] One end of the central column is fixedly connected to a fixed column, and multiple spokes are fixedly connected to the outer wall of the fixed column.

[0012] The above technical solution involves a central column that is fixedly connected to a fixed column at one end, and multiple spokes that are fixedly connected to the outer wall of the fixed column. The spokes ensure the stability and uniformity of the structure.

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

[0014] The outer wall of the fixed ring is fixedly connected to a second fixed stake, the outer wall of the rotating ring is fixedly connected to a third fixed stake, and both the outer walls of the third fixed stake and the second fixed stake are rotatably connected to rotating rings. A telescopic rod is fixedly connected between adjacent rotating rings.

[0015] Through the above technical solution: a second fixed pile is fixedly connected to the outer wall of the fixed ring, providing additional support and stability for the entire device; a third fixed pile is fixedly connected to the outer wall of the rotating ring; both the outer walls of the third fixed pile and the second fixed pile are rotatably connected to rotating rings; and a telescopic rod is fixedly connected between adjacent rotating rings. The telescopic rod can be extended or retracted as needed to adapt to different working environments and conditions.

[0016] As a further description of the above technical solution:

[0017] The fan has a motor mounted on its outer wall and a base mounted on its bottom surface.

[0018] The above technical solution involves: a motor installed on the outer wall of the fan, which provides power to the fan and ensures efficient operation; and a base installed on the bottom of the fan, which provides stable support for the fan.

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

[0020] An electrical box is fixedly connected to the outer wall of the fan, and a controller is installed on the outer wall of the electrical box.

[0021] The above technical solution involves a fixed electrical box connected to the outer wall of the fan, and a controller installed on the outer wall of the electrical box to control the operation of the equipment.

[0022] As a further description of the above technical solution:

[0023] A handle is fixedly connected to the top surface of the cover, and a threaded ring is fixedly connected to the bottom of the air intake pipe.

[0024] The above technical solution involves a handle that is fixedly connected to the top surface of the cover for easy operation, allowing the cover to be opened or closed easily, and a threaded ring that is fixedly connected to the bottom of the air intake pipe to enhance the stability of the structure.

[0025] As a further description of the above technical solution:

[0026] The filter screen is fixedly connected to a frame at its edge, and the outer wall of the rotating rod is provided with multiple screws.

[0027] The above technical solution involves a frame that is fixedly connected to the edge of the filter screen to ensure that the filter screen can be installed stably. Multiple screws are provided on the outer wall of the rotating rod to fix the connection between the rotating rod and the blade, ensuring the stability of the rotating rod during operation and facilitating the replacement of the blade.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, when it is necessary to adjust the air volume, the telescopic rod is extended. The telescopic rod is rotatably connected to the second and third fixed stakes. The telescopic rod pushes the rotating ring to rotate, that is, the first fixed stake rotates. The first fixed stake slides in the groove on the outer wall of the fixed plate, causing the fixed plate to rotate around the rotating rod. The fixed plate is fixedly connected to the rotating rod, that is, the rotating rod rotates. The outer wall of the rotating rod is fixedly connected to blades, that is, the blades flip, which can control the ventilation volume. The flipping angle of the blades can be controlled by controlling the rotation angle of the rotating rod, that is, the ventilation volume is controllable. The ventilation volume can be quickly adjusted by adjusting the length of the telescopic rod. The blades are fixed to the rotating rod with screws for easy replacement.

[0030] 2. In this utility model, the fan, driven by the motor, draws air in through the air inlet pipe and then into the ventilation pipe to achieve a stable ventilation volume. A filter cartridge is installed in the middle of the air inlet pipe, and a filter screen is installed inside the filter cartridge. When the air passes through the filter screen, the dust in the air is intercepted by the filter screen on the inner wall of the filter screen, which achieves pretreatment of the incoming air. The dust intercepted inside the filter screen is convenient for cleaning and maintenance. The threaded ring at the bottom of the cover presses the filter screen to make the filter screen firmly fixed. Attached Figure Description

[0031] Figure 1 This is a front perspective view of a laboratory variable air volume ventilation energy-saving device proposed in this utility model;

[0032] Figure 2 This is a partial structural diagram of a laboratory variable air volume ventilation energy-saving device proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram of a laboratory variable air volume ventilation energy-saving device proposed in this utility model;

[0034] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 This is a partial structural exploded view of a laboratory variable air volume ventilation energy-saving device proposed in this utility model.

[0036] Legend:

[0037] 1. Ventilation duct; 2. Filtration mechanism; 201. Fan; 202. Flange; 203. Inlet pipe; 204. Filter cartridge; 205. Filter screen; 206. Cover; 3. Fixing ring; 4. Rotating rod; 5. Blade; 6. Central column; 7. Fixing plate; 8. Rotating ring; 9. Fixing post one; 10. Slide groove; 11. Fixing post two; 12. Fixing post three; 13. Rotating ring; 14. Telescopic rod; 15. Fixing column; 16. Wheel spoke; 17. Base; 18. Motor; 19. Electrical box; 20. Controller; 21. Frame; 22. Handle; 23. Threaded ring; 24. Screw. Detailed Implementation

[0038] 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.

[0039] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides a laboratory variable air volume ventilation energy-saving device, including a ventilation pipe 1, a fixed ring 3 fixedly connected to the middle of the ventilation pipe 1, a plurality of rotating rods 4 rotatably connected to the inner wall of the fixed ring 3, a central column 6 rotatably connected to the other end of the rotating rods 4, a blade 5 provided in the middle of the rotating rods 4, a fixed plate 7 fixedly connected to one end of the rotating rod 4 through the outer wall of the fixed ring 3, a sliding groove 10 provided at the lower end of the outer wall of the fixed plate 7, a rotating ring 8 rotatably connected to the outer wall of the fixed ring 3, a plurality of fixed stakes 9 fixedly connected to the outer wall of the rotating ring 8, the outer wall of the fixed stakes 9 slidingly connected to the inner wall of the sliding groove 10, and a filter mechanism 2 provided at one end of the ventilation pipe 1 for ventilation pretreatment;

[0040] Specifically, a fixed ring 3 is fixed in the middle of the ventilation duct 1. Multiple rotating rods 4 are evenly distributed on the inner wall of the fixed ring 3. The rotating rods 4 can rotate freely on the inner wall of the fixed ring 3. The other end of each rotating rod 4 is connected to the central column 6, so that the rotating rod 4 can rotate around the central column 6. A blade 5 that can adjust the air volume is installed in the middle of the rotating rod 4. One end of the rotating rod 4 passes through the outer wall of the fixed ring 3 and is connected to the fixed plate 7. A sliding groove 10 is provided at the lower outer end of the fixed plate 7. A rotating ring 8 is rotatably connected to the outer wall of the fixed ring 3. Multiple fixed stakes 9 are fixedly installed on the outer wall of the rotating ring 8. The outer wall of the fixed stakes 9 is slidably connected to the inner wall of the sliding groove 10 on the fixed plate 7, thereby achieving precise adjustment.

[0041] Please see the appendix Figure 4 - Appendix Figure 5 The filter mechanism 2 includes a fan 201, one end of which is connected to one end of the ventilation pipe 1. An air inlet pipe 203 is fixedly connected to the outer wall of the fan 201 through a flange 202. A filter cartridge 204 is provided in the middle of the air inlet pipe 203. A filter screen 205 is provided on the inner wall of the filter cartridge 204. A cover 206 is provided on the top of the filter cartridge 204.

[0042] Specifically, one end of the fan 201 is connected to one end of the ventilation pipe 1 to ensure smooth airflow. An air inlet pipe 203 is fixedly connected to the outer wall of the fan 201 through a flange 202. A filter cartridge 204 is installed in the middle of the air inlet pipe 203. A filter screen 205 is installed on the inner wall of the filter cartridge 204. The filter screen 205 can effectively intercept impurities and particulate matter in the air. In order to facilitate maintenance and replacement of the filter screen 205, a cover 206 is installed on the top of the filter cartridge 204. The cover 206 can be easily opened and closed to facilitate inspection and cleaning of the inside of the filter cartridge 204.

[0043] Please see the appendix Figure 1 - Appendix Figure 3 One end of the central column 6 is fixedly connected to a fixed column 15. Multiple spokes 16 are fixedly connected to the outer wall of the fixed column 15. The outer wall of the fixed ring 3 is fixedly connected to a second fixed pile 11. The outer wall of the rotating ring 8 is fixedly connected to a third fixed pile 12. The outer walls of the third fixed pile 12 and the second fixed pile 11 are both rotatably connected to rotating rings 13. Telescopic rods 14 are fixedly connected between adjacent rotating rings 13. A motor 18 is installed on the outer wall of the fan 201. A base 17 is installed on the bottom surface of the fan 201.

[0044] Specifically, one end of the central column 6 is fixedly connected to the fixed column 15. Multiple spokes 16 are fixedly connected to the outer wall of the fixed column 15. The spokes 16 ensure the stability and uniformity of the structure. Fixed pile 2 11 is fixedly connected to the outer wall of the fixed ring 3, providing additional support and stability for the entire device. Fixed pile 3 12 is fixedly connected to the outer wall of the rotating ring 8. Rotating rings 13 are rotatably connected to the outer walls of both fixed pile 3 12 and fixed pile 2 11. Telescopic rods 14 are fixedly connected between adjacent rotating rings 13. Telescopic rods 14 can be extended or retracted as needed to adapt to different working environments and conditions. A motor 18 is installed on the outer wall of the fan 201. The motor 18 is responsible for providing power to the fan 201 to ensure efficient operation. A base 17 is installed on the bottom surface of the fan 201, providing stable support for the fan 201.

[0045] Please see the appendix Figure 3 - Appendix Figure 5An electrical box 19 is fixedly connected to the outer wall of the fan 201. A controller 20 is installed on the outer wall of the electrical box 19. A handle 22 is fixedly connected to the top surface of the cover 206. A threaded ring 23 is fixedly connected to the bottom of the air inlet pipe 203. A frame 21 is fixedly connected to the edge of the filter screen 205. Multiple screws 24 are installed on the outer wall of the rotating rod 4.

[0046] Specifically, an electrical box 19 is fixedly connected to the outer wall of the fan 201. A controller 20 is installed on the outer wall of the electrical box 19 to control the operation of the equipment. A handle 22 is fixedly connected to the top surface of the cover 206 for easy operation, allowing the cover 206 to be easily opened or closed. A threaded ring 23 is fixedly connected to the bottom of the air inlet pipe 203 to enhance the stability of the structure. A frame 21 is fixedly connected to the edge of the filter screen 205 to ensure that the filter screen 205 can be installed securely. Multiple screws 24 are installed on the outer wall of the rotating rod 4 to fix the connection between the rotating rod 4 and the blade 5, ensuring the stability of the rotating rod 4 during operation and facilitating the replacement of the blade 5.

[0047] Working principle: When air volume needs to be adjusted, the telescopic rod 14 is extended. The telescopic rod 14 is rotatably connected to the second fixed stake 11 and the third fixed stake 12. The telescopic rod 14 pushes the rotating ring 8 to rotate, that is, the first fixed stake 9 rotates. The first fixed stake 9 slides in the groove 10 on the outer wall of the fixed plate 7, causing the fixed plate 7 to rotate around the rotating rod 4. The fixed plate 7 is fixedly connected to the rotating rod 4, that is, the rotating rod 4 rotates. The outer wall of the rotating rod 4 is fixedly connected to the blade 5, that is, the blade 5 flips, which can control the ventilation volume. The flipping angle of the blade 5 can be controlled by controlling the rotation angle of the rotating rod 4, that is, the ventilation volume is controllable. The ventilation volume can be quickly adjusted by adjusting the length of the telescopic rod 14. The blade 5 is fixed to the rotating rod 4 by screws 24 for easy replacement.

[0048] Driven by the motor 18, the fan 201 draws air in through the air inlet pipe 203 and then into the ventilation pipe 1 to achieve a stable ventilation volume. A filter cartridge 204 is installed in the middle of the air inlet pipe 203, and a filter screen 205 is installed inside the filter cartridge 204. When the air passes through the filter screen 205, the dust in the air is intercepted by the filter screen 205 on the inner wall of the filter screen 205, which achieves pretreatment of the incoming air. The dust intercepted inside the filter screen 205 is convenient for cleaning and maintenance. The threaded ring 23 at the bottom of the cover 206 presses the filter screen 205 to make the filter screen 205 firmly fixed.

[0049] 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 laboratory variable air volume ventilation energy-saving device, comprising a ventilation duct (1), characterized in that: A fixed ring (3) is fixedly connected to the middle of the ventilation pipe (1). Multiple rotating rods (4) are rotatably connected to the inner wall of the fixed ring (3). A central column (6) is rotatably connected to the other end of the rotating rod (4). A blade (5) is provided in the middle of the rotating rod (4). One end of the rotating rod (4) passes through the outer wall of the fixed ring (3) and is fixedly connected to a fixed piece (7). A sliding groove (10) is provided at the lower end of the outer wall of the fixed piece (7). A rotating ring (8) is rotatably connected to the outer wall of the fixed ring (3). Multiple fixed stakes (9) are fixedly connected to the outer wall of the rotating ring (8). The outer wall of the fixed stakes (9) is slidably connected to the inner wall of the sliding groove (10). A filter mechanism (2) is provided at one end of the ventilation pipe (1). The filter mechanism (2) is used for ventilation pretreatment.

2. The laboratory variable air volume ventilation energy-saving device according to claim 1, characterized in that: The filtration mechanism (2) includes a fan (201), one end of which is connected to one end of a ventilation pipe (1). An air inlet pipe (203) is fixedly connected to the outer wall of the fan (201) via a flange (202). A filter cartridge (204) is provided in the middle of the air inlet pipe (203). A filter screen (205) is provided on the inner wall of the filter cartridge (204). A cover (206) is provided on the top of the filter cartridge (204).

3. The laboratory variable air volume ventilation energy-saving device according to claim 1, characterized in that: One end of the central column (6) is fixedly connected to a fixed column (15), and the outer wall of the fixed column (15) is fixedly connected to multiple spokes (16).

4. The laboratory variable air volume ventilation energy-saving device according to claim 1, characterized in that: The outer wall of the fixed ring (3) is fixedly connected to the second fixed pile (11), the outer wall of the rotating ring (8) is fixedly connected to the third fixed pile (12), the outer walls of the third fixed pile (12) and the second fixed pile (11) are both rotatably connected to the rotating ring (13), and the two adjacent rotating rings (13) are fixedly connected to the telescopic rod (14).

5. A laboratory variable air volume ventilation energy-saving device according to claim 2, characterized in that: The fan (201) has a motor (18) on its outer wall and a base (17) on its bottom surface.

6. The laboratory variable air volume ventilation energy-saving device according to claim 2, characterized in that: An electrical box (19) is fixedly connected to the outer wall of the fan (201), and a controller (20) is provided on the outer wall of the electrical box (19).

7. A laboratory variable air volume ventilation energy-saving device according to claim 2, characterized in that: A handle (22) is fixedly connected to the top surface of the cover (206), and a threaded ring (23) is fixedly connected to the bottom of the air inlet pipe (203).

8. A laboratory variable air volume ventilation energy-saving device according to claim 2, characterized in that: The filter screen (205) is fixedly connected to the edge of the frame (21), and the outer wall of the rotating rod (4) is provided with a plurality of screws (24).

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