Ventilation cabinet capable of adjusting ventilation quantity
By introducing motor-driven bidirectional screws and fixedly connected multiple sets of filter plates into the fume hood, the problem of unadjustable air volume in the traditional fume hood is solved, and the precise control of ventilation volume and the improvement of air quality is achieved.
Patent Information
- Application Number
- CN202420905894.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The fixed air volume design of traditional fume hoods cannot be flexibly adjusted according to experimental needs, resulting in unsatisfactory exhaust effect or waste of energy, affecting the laboratory environment and experimental results.
A fume hood with adjustable ventilation volume is designed, and the cross-sectional area of the ventilation path is changed by a motor-driven bidirectional screw mechanism, combined with multiple sets of fixedly connected filter plates to improve ventilation efficiency and air quality.
Accurate control of ventilation volume, improve the adaptability and flexibility of the fume hood, reduce gas leakage, extend component life, and improve filtration efficiency and air quality.
Smart Images
Figure CN222288286U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laboratory fume hoods, in particular to a fume hood with adjustable ventilation volume. Background Art
[0002] In the laboratory environment, fume hoods are important safety equipment, mainly used to remove harmful gases and particles generated during experimental operations, protect the health of experimenters, and maintain the air quality of the laboratory. The performance of fume hoods directly affects the work efficiency of the laboratory and the accuracy of the experimental results.
[0003] Traditional fume hoods usually adopt a fixed air volume design and cannot be flexibly adjusted according to the specific needs of the experiment. This leads to unsatisfactory exhaust effect of the fume hood in some cases, and harmful gases cannot be discharged in time, which brings health risks to the experimenters; in other cases, the ventilation volume is too large, which not only wastes energy, but also may have an adverse effect on the temperature, humidity and other environmental parameters in the laboratory. Utility Model Content
[0004] (I) Purpose of the utility model
[0005] In view of this, the purpose of the present invention is to provide a fume hood with adjustable ventilation volume, which solves the problems raised in the above background.
[0006] (II) Technical solution
[0007] A fume hood with adjustable ventilation volume, comprising a fume hood body, a top shell fixedly mounted on the top of the fume hood body, and a vent installed on the top of the top shell, fixing plates fixedly mounted on both sides of the inner wall of the top shell, and mounting grooves are provided on both sides of the inner wall of the top shell, two groups of fixing seats are fixedly mounted on the inner wall of the mounting groove, and circular through grooves are provided on the outer surfaces of the two groups of fixing seats, a bidirectional screw rod is movably mounted in the circular through groove, and two groups of adjustment plates are movably mounted on the outer surface of the bidirectional screw rod, one end of the bidirectional screw rod is connected to a motor, and the other end of the bidirectional screw rod is connected to a locking piece.
[0008] Preferably, the outer surfaces of the two groups of adjustment plates are wrapped with rubber. The softness and sealing properties of the rubber help to form a good sealing effect between the adjustment plates, reduce gas leakage in the fume hood, and improve ventilation efficiency. The wear resistance of the rubber can protect the adjustment plates and the fixed plates from direct friction and collision, thereby extending their service life.
[0009] Preferably, the motor is fixedly connected to the fixing seat, which can ensure the stability of the motor during operation and prevent the reduction of adjustment accuracy or failure due to vibration or displacement of the motor.
[0010] Preferably, a protective plate is fixedly installed on one side of the two groups of fixing seats. The provision of the protective plate can effectively protect the motor and the locking member from direct collision or damage by external objects, thereby ensuring the stability and safety of these key components.
[0011] Preferably, a limit ring is fixedly installed on the inner wall of the vent, and a filter plate is movably installed on the top of the limit ring. The setting of the filter plate can effectively filter the air entering the fume hood, remove impurities and harmful substances therein, and ensure the air quality in the fume hood. The filter plate is movably installed by the limit ring, and can be easily disassembled and replaced, which is convenient for cleaning and maintenance, thereby maintaining the best filtering effect.
[0012] Preferably, the filter plates are divided into multiple groups, and the multiple groups of filter plates are fixedly connected by fixing rods. The multiple groups of filter plates are fixedly connected by fixing rods, which enhances the overall structural stability of the filter plates and prevents them from deformation or displacement during use. The multiple groups of filter plates are fixedly connected by fixing rods, which improves the filtration efficiency.
[0013] Preferably, a handle is fixedly installed on the top of the fixing rod. The provision of the handle enables the operator to more conveniently pull the fixing rod when removing and installing the filter plate, thereby simplifying the operation process and improving work efficiency.
[0014] It can be seen from the above technical solutions that this application has the following beneficial effects:
[0015] 1. The utility model drives the bidirectional screw mechanism through the motor, so that the adjustment plate can move in opposite directions, thereby changing the effective cross-sectional area of the ventilation path and realizing precise control of the ventilation volume. This meets the diverse needs for ventilation volume under different experimental conditions and improves the adaptability and flexibility of the fume hood.
[0016] 2. The utility model fixes and connects multiple groups of filter plates through fixing rods, thereby enhancing the overall structural stability of the filter plates and preventing them from being deformed or shifted during use. In addition, multiple groups of filter plates are fixedly connected through fixing rods, thereby improving filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0019] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;
[0020] Figure 4 For this utility model Figure 2 The enlarged schematic diagram of point B in the middle;
[0021] Figure 5 For this utility model Figure 2 Enlarged schematic diagram at point C in the middle.
[0022] In the figure: 1. Fume hood body; 2. Top shell; 3. Ventilation port; 4. Fixing plate; 5. Adjusting plate; 6. Mounting slot; 7. Bidirectional screw rod; 8. Locking piece; 9. Fixing seat; 911. Motor; 912. Protective plate; 211. Filter plate; 212. Fixing rod; 213. Handle; 214. Limiting ring. DETAILED DESCRIPTION
[0023] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.
[0024] See also Figure 1-5 , an embodiment provided by the utility model:
[0025] A fume hood with adjustable ventilation volume comprises a fume hood body 1, a top shell 2 is fixedly mounted on the top of the fume hood body 1, and a vent 3 is mounted on the top of the top shell 2, fixing plates 4 are fixedly mounted on both sides of the inner wall of the top shell 2, and mounting grooves 6 are provided on both sides of the inner wall of the top shell 2, two groups of fixing seats 9 are fixedly mounted on the inner wall of the mounting groove 6, and circular through grooves are provided on the outer surfaces of the two groups of fixing seats 9, a bidirectional screw rod 7 is movably mounted in the circular through groove, and two groups of adjustment plates 5 are movably mounted on the outer surface of the bidirectional screw rod 7, one end of the bidirectional screw rod 7 is connected to a motor 911, and the other end of the bidirectional screw rod 7 is connected to a locking member 8.
[0026] Furthermore, the outer surfaces of the two groups of adjustment plates 5 are wrapped with rubber. The softness and sealing properties of the rubber help to form a good sealing effect between the adjustment plates 5, reduce gas leakage in the fume hood, and improve ventilation efficiency. The wear resistance of the rubber can protect the adjustment plates 5 and the fixed plates 4 from direct friction and collision, thereby extending their service life.
[0027] Furthermore, the motor 911 is fixedly connected to the fixing base 9, which can ensure the stability of the motor 911 during operation and prevent the reduction of adjustment accuracy or failure caused by vibration or displacement of the motor 911.
[0028] Furthermore, a protective plate 912 is fixedly installed on one side of the two sets of fixing seats 9. The setting of the protective plate 912 can effectively protect the motor 911 and the locking member 8 from direct collision or damage by external objects, ensuring the stability and safety of these key components.
[0029] Furthermore, a limit ring 214 is fixedly installed on the inner wall of the vent 3, and a filter plate 211 is movably installed on the top of the limit ring 214. The setting of the filter plate 211 can effectively filter the air entering the fume hood, remove impurities and harmful substances therein, and ensure the air quality in the fume hood. The filter plate 211 is movably installed through the limit ring 214, and can be easily disassembled and replaced, which is convenient for cleaning and maintenance, thereby maintaining the best filtering effect.
[0030] Furthermore, the filter plates 211 are divided into multiple groups, and the multiple groups of filter plates 211 are fixedly connected by fixing rods 212. The multiple groups of filter plates 211 are fixedly connected by fixing rods 212, which enhances the overall structural stability of the filter plates and prevents them from deformation or displacement during use. The multiple groups of filter plates 211 are fixedly connected by fixing rods 212, which improves the filtering efficiency.
[0031] Furthermore, a handle 213 is fixedly installed on the top of the fixing rod 212. The setting of the handle 213 enables the operator to more conveniently pull the fixing rod 212 when removing and installing the filter plate 211, thereby simplifying the operation process and improving work efficiency.
[0032] Working principle: When the ventilation volume of the fume hood needs to be adjusted, the motor 911 is started first. The motor 911 drives the bidirectional screw 7 to rotate between the two sets of fixed seats 9 in the mounting groove 6. Due to the characteristics of the bidirectional screw 7, its rotation will cause the two sets of adjustment plates 5 to move in opposite directions on the outer surface of the screw. These adjustment plates 5 are installed on both sides of the inner wall of the top shell 2, and work together with the fixed plate 4 to form a part of the ventilation path. As the adjustment plates 5 move, the distance between them changes, thereby changing the effective cross-sectional area of the ventilation path. When the adjustment plates 5 are close to each other, the ventilation path becomes narrower and the ventilation volume decreases; conversely, when the adjustment plates 5 are away from each other, the ventilation path becomes wider and the ventilation volume increases. In this way, the ventilation volume in the fume hood can be accurately controlled to meet the ventilation needs under different experimental conditions.
[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A fume hood with adjustable ventilation volume, comprising a fume hood body (1), a top shell (2) fixedly mounted on the top of the fume hood body (1), and a vent (3) mounted on the top of the top shell (2), characterized in that: A fixing plate (4) is fixedly mounted on both sides of the inner wall of the top shell (2), and a mounting groove (6) is provided on both sides of the inner wall of the top shell (2), two groups of fixing seats (9) are fixedly mounted on the inner wall of the mounting groove (6), and the outer surfaces of the two groups of fixing seats (9) are provided with a circular through groove, a bidirectional screw rod (7) is movably mounted in the circular through groove, and two groups of adjustment plates (5) are movably mounted on the outer surface of the bidirectional screw rod (7), one end of the bidirectional screw rod (7) is connected to a motor (911), and the other end of the bidirectional screw rod (7) is connected to a locking member (8).
2. A fume hood with adjustable ventilation volume according to claim 1, characterized in that: The outer surfaces of the two groups of adjustment plates (5) are wrapped with rubber.
3. The fume hood with adjustable ventilation volume according to claim 1, characterized in that: The motor (911) is fixedly connected to the fixing seat (9).
4. The fume hood with adjustable ventilation volume according to claim 1, characterized in that: A protective plate (912) is fixedly mounted on one side of the two sets of fixing seats (9).
5. The fume hood with adjustable ventilation volume according to claim 1, characterized in that: A limit ring (214) is fixedly mounted on the inner wall of the vent (3), and a filter plate (211) is movably mounted on the top of the limit ring (214).
6. A fume hood with adjustable ventilation volume according to claim 5, characterized in that: The filter plates (211) are divided into multiple groups, and the multiple groups of filter plates (211) are fixedly connected via fixing rods (212).
7. A fume hood with adjustable ventilation volume according to claim 6, characterized in that: A handle (213) is fixedly mounted on the top end of the fixing rod (212).