Laboratory ventilation device

Abstract

The utility model relates to the technical field of ventilation equipment for laboratories, in particular to a ventilation device for a laboratory. The laboratory ventilation device provided by the utility model solves the technical problem that a filter screen of a ventilation device for a laboratory in the prior art is not easy to clean. A laboratory ventilation device comprises a fan which is installed on a wall. The filter assembly is mounted on the fan, and indoor air sequentially passes through the filter assembly and the fan; and a cleaning assembly; by arranging the cleaning assembly, the cleaning assembly is used for cleaning the filtering assembly, airflow formed in the working process of the fan pushes the rotating shaft to rotate through the blades, and the rotating shaft drives the cleaning brush to rotate relative to the filtering net in the rotating process; the cleaning brush can remove dirt attached to the filter screen in the rotating process relative to the filter screen, so that the function of automatically cleaning the filter screen is achieved, the filter screen does not need to be manually cleaned, and the filter screen is very convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment for laboratories, and more particularly to a laboratory ventilation device. Background Technology

[0002] Chemical or biological experiments in the laboratory produce a large amount of gases that are harmful to the human body. If the exhaust gases are not treated and ventilated in time, the health and lives of the experimenters will be endangered.

[0003] To address laboratory ventilation issues, existing laboratory ventilation systems typically include a main duct with an air inlet. An air intake fan is installed inside the air inlet to supply indoor air into the main duct. The air inlet is also equipped with a filter to filter out debris and prevent it from entering the air intake fan or the main duct.

[0004] Over time, a significant amount of debris accumulates on the filter screen, affecting the speed at which air enters the main duct and the laboratory's ventilation. This debris can only be cleaned manually, making the filter cleaning process extremely inconvenient.

[0005] Therefore, existing ventilation devices used in laboratories have the technical problem of difficult-to-clean filters. Summary of the Invention

[0006] The present invention provides a laboratory ventilation device that solves the technical problem that the filter screen of the existing laboratory ventilation device is not easy to clean.

[0007] Some implementation schemes for solving the above-mentioned technical problems include:

[0008] A laboratory ventilation device includes a fan, the fan being mounted on a wall;

[0009] A filter assembly is installed on the fan, and indoor air passes sequentially through the filter assembly and the fan;

[0010] A cleaning component is provided, which is mounted on the filter assembly and cleans the filter assembly.

[0011] The filter assembly includes a housing and a filter screen disposed on the housing. The cleaning assembly includes a rotating shaft rotatably connected to the housing. The cleaning assembly also includes a cleaning brush disposed on the rotating shaft. The cleaning brush contacts the filter screen, and the rotating shaft drives the cleaning brush to rotate relative to the filter screen.

[0012] The filter assembly further includes a drive mechanism for driving the rotating shaft to rotate. The drive mechanism includes blades mounted on the rotating shaft, and the airflow through the filter screen drives the rotating shaft to rotate through the blades.

[0013] The drive mechanism further includes a first magnetic component installed on the rotating shaft, and the fan is provided with a second magnetic component that attracts the first magnetic component. The second magnetic component drives the first magnetic component using magnetic force.

[0014] Preferably, the fan includes a housing, a shaft is rotatably connected to the housing, the shaft is provided with fan blades, and the second magnetic component is mounted on the shaft.

[0015] Preferably, the rotation direction of the shaft is the same as the rotation direction of the shaft driven by the airflow.

[0016] Preferably, the first magnetic component includes a first mounting base mounted on the rotating shaft, the first mounting base having first support rods evenly distributed circumferentially, and a first magnetic block being disposed at the end of the first support rods away from the first mounting base.

[0017] Preferably, the second magnetic component includes a second mounting base mounted on the shaft, the second mounting base having second support rods evenly distributed circumferentially, and a second magnetic block that attracts the first magnetic block is provided at one end of the second support rod away from the second mounting base.

[0018] Preferably, the first mounting base is mounted to the rotating shaft via a key connection, and the second mounting base is mounted to the shaft body via a key connection.

[0019] Preferably, the cleaning brush includes a rod body, which is integral with the rotating shaft, and the rod body is provided with bristles.

[0020] Preferably, the rod has a polygonal cross-sectional shape and is positioned on the side of the filter screen away from the fan.

[0021] Preferably, the housing is provided with a mounting bracket for mounting the rotating shaft, the mounting bracket is provided with a shaft hole that mates with the rotating shaft, and a rolling bearing is provided between the rotating shaft and the shaft hole.

[0022] Preferably, the housing is provided with a frame for mounting the shaft, the frame is provided with a hole for cooperating with the shaft, a rolling bearing is provided between the shaft and the hole, and the outer shell is fixed to the housing by threads.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] By setting up a cleaning component, which is used to clean the filter assembly, the airflow generated during the operation of the fan drives the rotating shaft to rotate through the blades. During the rotation of the shaft, the cleaning brush rotates relative to the filter screen. Since the cleaning brush is in contact with the filter screen, the dirt attached to the filter screen can be removed during the rotation of the cleaning brush relative to the filter screen, thereby realizing the function of automatic cleaning of the filter screen. The filter screen does not need to be cleaned manually, making the cleaning of the filter screen very convenient.

[0025] Airflow drives the shaft to rotate through the blades, eliminating the need for a separate drive for the cleaning components, thus simplifying the structure of the laboratory ventilation system and reducing its operating costs.

[0026] By incorporating a first magnetic component and a second magnetic component, the fan drives the second magnetic component to rotate, which in turn uses magnetic force to drive the first magnetic component to rotate. This, in turn, causes the first magnetic component to drive the shaft to rotate, making the shaft less prone to jamming. The shaft is propelled by both airflow and magnetic force, thus preventing it from jamming and improving the stability of the cleaning component during operation. Attached Figure Description

[0027] For illustrative purposes, several embodiments of the present invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the present invention.

[0028] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the present invention from a first angle.

[0030] Figure 3 This is a schematic diagram of the second angle of this utility model.

[0031] Figure 4 for Figure 3 A schematic diagram omitting the casing and outer shell.

[0032] Figure 5 This is an exploded view of the present invention.

[0033] Figure 6 This is a schematic diagram of the filtering component.

[0034] As shown in the figure:

[0035] 1. Fan, 11. Casing, 12. Shaft, 121. Fan blade, 13. Frame.

[0036] 2. Filter assembly, 21. Housing, 22. Filter screen.

[0037] 3. Cleaning assembly; 31. Rotating shaft; 311. Blade; 32. Cleaning brush; 33. First magnetic assembly; 331. First mounting base; 332. First support rod; 333. First magnet; 34. Second magnetic assembly; 341. Second mounting base; 342. Second support rod; 343. Second magnet; 35. Mounting bracket. Detailed Implementation

[0038] The specific embodiments shown below are intended to describe various configurations of the subject matter of this invention and are not intended to represent the only configuration in which the subject matter of this invention can be practiced. The specific embodiments include detailed descriptions intended to provide a thorough understanding of the subject matter of this invention. However, it will be clear and apparent to those skilled in the art that the subject matter of this invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0039] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0040] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Reference Figures 1 to 6 As shown, a laboratory ventilation device includes a fan 1, which is mounted on a wall;

[0042] A filter assembly 2 is installed on the fan 1, and indoor air passes through the filter assembly 2 and the fan 1 in sequence.

[0043] A cleaning component 3 is installed on the filter assembly 2, and the cleaning component 3 cleans the filter assembly 2;

[0044] The filter assembly 2 includes a housing 21 and a filter screen 22 disposed on the housing 21. The cleaning assembly 3 includes a rotating shaft 31 rotatably connected to the housing 21. The cleaning assembly 3 also includes a cleaning brush 32 disposed on the rotating shaft 31. The cleaning brush 32 contacts the filter screen 22. The rotating shaft 31 drives the cleaning brush 32 to rotate relative to the filter screen 22.

[0045] The filter assembly 2 further includes a drive mechanism for driving the rotating shaft 31 to rotate. The drive mechanism includes blades 311, which are mounted on the rotating shaft 31. The airflow through the filter screen 22 drives the rotating shaft 31 to rotate through the blades 311.

[0046] The drive mechanism further includes a first magnetic component 33 installed on the rotating shaft 31, and the fan 1 is provided with a second magnetic component 34 that attracts the first magnetic component 33. The second magnetic component 34 drives the first magnetic component 33 by magnetic force.

[0047] Specifically, the first magnetic component 33 and the second magnetic component 34 do not contact each other; power is transmitted between them through magnetic force. Although the force transmitted by the second magnetic component 34 to the first magnetic component 33 is not large, since the rotating shaft 31 is driven to rotate by airflow through the blades 311, the force transmitted from the second magnetic component 34 to the first magnetic component 33 only plays an auxiliary role.

[0048] Therefore, the force transmitted between the second magnetic component 34 and the first magnetic component 33 through magnetic force can meet the requirements.

[0049] In some embodiments, the rotating shaft 31 is driven by both airflow and magnetic force, which makes the rotating shaft 31 less prone to jamming and the cleaning component 3 has higher stability during operation.

[0050] Reference Figures 1 to 6 As shown, in some embodiments, the fan 1 includes a housing 11, the housing 11 is rotatably connected to a shaft 12, the shaft 12 is provided with a fan blade 121, and the second magnetic component 34 is mounted on the shaft 12.

[0051] In some embodiments, the fan blades 121 and the shaft 12 can be an integral structure. The number of fan blades 121 is not limited and can be reasonably determined as needed.

[0052] In some embodiments, the shaft 12 is driven by a motor. The motor includes a stator and a rotor, the shaft 12 and the rotor can be an integral structure, and the stator can be fixed to the housing 11.

[0053] In some embodiments, the rotation direction of the shaft 12 is the same as the rotation direction of the rotating shaft 31 driven by the airflow.

[0054] Reference Figures 1 to 6 As shown, in some embodiments, the first magnetic component 33 includes a first mounting base 331 mounted on the rotating shaft 31, the first mounting base 331 having first support rods 332 evenly distributed circumferentially, and a first magnetic block 333 being disposed at one end of the first support rods 332 away from the first mounting base 331.

[0055] In some embodiments, the first support rod 332 and the first mounting base 331 are an integral structure.

[0056] In some embodiments, the first magnetic block 333 is bonded to the first support rod 332.

[0057] In some embodiments, the second magnetic component 34 includes a second mounting base 341 mounted on the shaft 12. The second mounting base 341 has second support rods 342 evenly distributed around its circumference. At one end of the second support rod 342 away from the second mounting base 341, a second magnetic block 343 is provided that attracts the first magnetic block 333.

[0058] In some embodiments, the second support rod 342 and the second mounting base 341 are an integral structure.

[0059] In some embodiments, the second magnet 343 is bonded to the second support rod 342.

[0060] In some embodiments, the first mounting base 331 is mounted to the rotating shaft 31 by a key connection, and the second mounting base 341 is mounted to the shaft body 12 by a key connection.

[0061] Reference Figures 1 to 6 As shown, the first mounting base 331 can also be fixed to the rotating shaft 31 by other fixing methods. The second mounting base 341 can also be fixed to the shaft body 12 by other fixing methods.

[0062] Understandably, the shaft 12 drives the second magnetic block 343 to rotate. When the second magnetic block 343 corresponds to the first magnetic block 333, the second magnetic block 343 and the first magnetic block 333 attract each other. Thus, the second magnetic block 343 applies a force to the first magnetic block 333 through magnetic force, causing the first magnetic block 333 to rotate with the second magnetic block 343. In this way, the second magnetic block 343 drives the first magnetic block 333 by using magnetic force, thereby driving the rotating shaft 31 to rotate.

[0063] In some embodiments, the number of the first magnetic block 333 and the second magnetic block 343 is not limited and can be reasonably determined as needed. For example, six first magnetic blocks 333 and six second magnetic blocks 343 can be provided.

[0064] Reference Figures 1 to 6 As shown, in some embodiments, the cleaning brush 32 includes a rod body, which is integral with the rotating shaft 31, and the rod body is provided with bristles.

[0065] In some embodiments, the cross-sectional shape of the rod is polygonal, and the rod is disposed on the side of the filter screen 22 away from the fan 1.

[0066] The pole has a polygonal cross-sectional shape, which gives it high bending strength and makes it less prone to deformation during long-term use.

[0067] In some embodiments, the housing 21 is provided with a mounting bracket 35 for mounting the rotating shaft 31, the mounting bracket 35 is provided with a shaft hole that mates with the rotating shaft 31, and a rolling bearing is provided between the rotating shaft 31 and the shaft hole.

[0068] In some embodiments, the mounting bracket 35 and the housing 21 can be an integral structure.

[0069] Reference Figures 1 to 6 As shown, in some embodiments, the housing 11 is provided with a frame 13 for mounting the shaft 12, the frame 13 is provided with a hole that mates with the shaft 12, a rolling bearing is provided between the shaft 12 and the hole, and the outer shell 21 is fixed to the housing 11 by threads.

[0070] In some embodiments, the stator of the motor can be mounted on the frame 13. Alternatively, the stator of the motor can be an integral part of the frame 13.

[0071] In some embodiments, both the mounting bracket 35 and the frame 13 have gaps that allow airflow. That is, both the mounting bracket 35 and the frame 13 can be made of rods. The cross-sectional shape of the rods can be circular.

[0072] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.

[0073] Furthermore, in some embodiments of the above utility model, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine the above embodiments according to their needs to achieve a better application experience.

[0074] When implementing the subject matter technical solution of this utility model, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter technical solution and the accompanying drawings. Obviously, these details are still within the scope of the subject matter technical solution of this utility model without departing from it.

Claims

1. A laboratory ventilation device, characterized in that: The system includes a fan (1) mounted on a wall; a filter assembly (2) mounted on the fan (1), through which indoor air passes sequentially; and a cleaning assembly (3) mounted on the filter assembly (2), which cleans the filter assembly (2). The filter assembly (2) includes a housing (21) and a filter screen (22) disposed on the housing (21). The cleaning assembly (3) includes a rotating shaft (31) rotatably connected to the housing (21), and a cleaning brush (32) disposed on the rotating shaft (31). The cleaning brush (32) interacts with the filter screen (2). When the filter screen (22) contacts the rotating shaft (31), the rotating shaft (31) drives the cleaning brush (32) to rotate relative to the filter screen (22); the filter assembly (2) also includes a drive mechanism for driving the rotating shaft (31) to rotate, the drive mechanism includes blades (311), the blades (311) are mounted on the rotating shaft (31), and the airflow through the filter screen (22) drives the rotating shaft (31) to rotate through the blades (311); the drive mechanism also includes a first magnetic component (33) mounted on the rotating shaft (31), and the fan (1) is provided with a second magnetic component (34) that attracts the first magnetic component (33), the second magnetic component (34) drives the first magnetic component (33) by magnetic force.

2. The laboratory ventilation device according to claim 1, characterized in that: The fan (1) includes a housing (11), the housing (11) is rotatably connected to a shaft (12), the shaft (12) is provided with a fan blade (121), and the second magnetic component (34) is installed on the shaft (12).

3. The laboratory ventilation device according to claim 2, characterized in that: The rotation direction of the shaft (12) is the same as the rotation direction of the rotating shaft (31) driven by the airflow.

4. The laboratory ventilation device according to claim 3, characterized in that: The first magnetic component (33) includes a first mounting base (331) mounted on the rotating shaft (31), and a first support rod (332) is evenly distributed in the circumferential direction on the first mounting base (331). A first magnetic block (333) is provided at the end of the first support rod (332) away from the first mounting base (331).

5. The laboratory ventilation device according to claim 4, characterized in that: The second magnetic component (34) includes a second mounting base (341) mounted on the shaft (12). The second mounting base (341) has second support rods (342) evenly distributed in the circumferential direction. The end of the second support rod (342) away from the second mounting base (341) is provided with a second magnetic block (343) that attracts the first magnetic block (333).

6. The laboratory ventilation device according to claim 5, characterized in that: The first mounting base (331) is mounted on the rotating shaft (31) by a key connection, and the second mounting base (341) is mounted on the shaft body (12) by a key connection.

7. The laboratory ventilation device according to claim 1, characterized in that: The cleaning brush (32) includes a rod body, which is an integral structure with the rotating shaft (31), and the rod body is provided with bristles.

8. The laboratory ventilation device according to claim 7, characterized in that: The cross-sectional shape of the rod is polygonal, and the rod is located on the side of the filter screen (22) away from the fan (1).

9. The laboratory ventilation device according to claim 2, characterized in that: The outer casing (21) is provided with a mounting bracket (35) for mounting the rotating shaft (31), the mounting bracket (35) is provided with a shaft hole that mates with the rotating shaft (31), and a rolling bearing is provided between the rotating shaft (31) and the shaft hole.

10. The laboratory ventilation device according to claim 9, characterized in that: The housing (11) is provided with a frame (13) for mounting the shaft (12), the frame (13) is provided with a hole that mates with the shaft (12), a rolling bearing is provided between the shaft (12) and the hole, and the outer shell (21) is fixed to the housing (11) by threads.

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