Laboratory ventilation equipment
By installing connecting rods and limiting components on the top of the fume hood operating table, the problem of experimental equipment being easily knocked over was solved, achieving stable placement and safe use of the equipment.
Patent Information
- Application Number
- CN202423284994.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing fume hoods, experimental equipment is easily knocked over due to the small operating area, leading to instability.
A connecting rod is installed on the top of the fume hood's operating table, and a limiting component, including a limiting ring and a support rod, is installed on the connecting rod. The connecting rod is fixed to the operating table by the detachable connecting component, and the limiting ring is used to stabilize the experimental equipment.
This effectively avoids the risk of experimental equipment being knocked over during operation, ensures stable placement of the equipment, and improves the safety and efficiency of the experiment.
Smart Images
Figure CN223733493U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of laboratory ventilation devices, and in particular relates to a laboratory ventilation device. Background Technology
[0002] In order to protect the safety of users and prevent the spread of pollutants from the experiment into the laboratory, fume hoods are usually installed when preparing chemicals in the laboratory. The main function of a fume hood is exhaust. In a chemical laboratory, it can remove various harmful gases, odors, moisture, as well as flammable, explosive and corrosive substances generated during the experiment, so as to ensure the safety of laboratory personnel, objects and the surrounding environment.
[0003] When conducting experiments in a fume hood, various experimental instruments are used, such as reagent bottles, beakers, and volumetric flasks. When these instruments are placed in the fume hood, it is essential to ensure that they are not only neatly arranged but also stable to prevent tilting or shaking, which could lead to accidents. However, in existing fume hoods, the instruments are placed directly on the worktable, and the worktable has a small operating area, making it easy for the instruments to be knocked over during operation. Utility Model Content
[0004] The purpose of this invention is to provide a laboratory ventilation device that allows experimental equipment to be placed stably on the operating table.
[0005] The laboratory ventilation equipment includes a fume hood body, a connecting rod horizontally arranged on the top of the operating table on the fume hood body, a limiting component for limiting the experimental equipment on the connecting rod, and a connecting component for detachably connecting the connecting rod to the operating table.
[0006] Furthermore, the limiting component includes two limiting rings arranged vertically, and the two limiting rings are connected together by a support rod; the lower limiting ring is connected to the connecting rod by a fixing rod.
[0007] Furthermore, the inner sidewalls of the limiting rings are all provided with rubber rings.
[0008] Furthermore, the support rod is a telescopic rod.
[0009] Furthermore, the limiting components are in several groups, and the several groups of limiting components are arranged at equal intervals from left to right.
[0010] Furthermore, several sets of limiting components have different sizes.
[0011] Furthermore, the connecting assembly includes two connecting blocks, which are respectively fixed to the left and right ends of the connecting rod; each connecting block is fixed with an "L"-shaped locking block, and the top of the operating table is fixed with two left and right arranged limiting blocks, each of which has a locking groove for the locking block to be engaged.
[0012] Furthermore, an identification strip is provided on the top of the operating panel on the fume hood body.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] This invention features a connecting rod installed on the top of the operating table. The connecting rod can be connected to the operating table via a connecting component. A limiting component for limiting the experimental equipment is then installed on the connecting rod. The experimental equipment can be placed on the limiting component, thus preventing the operator from knocking over and damaging the experimental equipment during the handling of various experimental equipment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;
[0017] Figure 3 for Figure 1 Enlarged structural diagram at point B;
[0018] Figure 4 for Figure 1 Front view structural diagram;
[0019] The components in the diagram are named as follows: 1. Fume hood body; 1.1. Side panel; 1.2. Operating table; 1.3. Lower cabinet; 1.4. Control panel; 1.5. Sliding door; 1.6. Upper cabinet; 1.7. Viewing window; 2. Connecting block; 3. Locking block; 4. Limiting block; 5. Connecting rod; 6. Narrow-mouth bottle; 7. Test tube; 8. Limiting ring; 9. Fixing rod; 10. Identification strip; 11. Support rod; 12. Rubber ring. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0021] Example
[0022] This embodiment describes a laboratory ventilation device, such as... Figure 1 and Figure 4As shown, the fume hood body 1 is a well-known product, already mass-produced and widely used in laboratories. The fume hood body 1 mainly consists of side panels 1.1, an operating table 1.2, a lower cabinet 1.3, a control panel 1.4, a sliding door 1.5, an upper cabinet 1.6, a viewing window 1.7, a fan, exhaust ducts, and lighting components. When the components of the fume hood body 1 are connected, the upper cabinet 1.6 and the lower cabinet 1.3 are arranged vertically, and the side panels 1.1 consist of three pieces installed on the left and right sides between the upper cabinet 1.6 and the lower cabinet 1.3. The upper cabinet 1.3 is used to store experimental equipment; the workbench 1.2 is located on top of the lower cabinet 1.3 and is used as a work surface for experimental personnel; the fan and lighting components are installed at the bottom of the upper cabinet 1.6, and the exhaust duct is connected to the fan. The exhaust duct outlet is located above the upper cabinet 1.6. Turning on the fan will extract harmful gases from the workbench 1.2 and discharge them outdoors or treat them through the exhaust system; the control panel 1.4 is usually located on the front of the fume hood and is used to control the fan speed and the lighting components; the lighting components are used to provide sufficient light for illumination inside the cabinet. For precise operation; the viewing window 1.7 is located in the upper front half between the upper cabinet 1.6 and the lower cabinet 1.3. The viewing window 1.7 is typically made of safety glass, allowing operators to manipulate items inside the cabinet while protecting their line of sight; the sliding door 1.5 is located at the bottom of the viewing window 1.7, made of tempered glass, and its opening height is manually adjustable, used to shield gases generated during the experiment; the attached drawings only show the external structure of the fume hood body 1, omitting the fan, exhaust duct, and lighting components because these are not currently available. Since the known technology in the fume hood body 1 exists, and the original structure of the fan, exhaust duct, and lighting components has not been modified in this design, they are not drawn. Therefore, the specific principle and structure of the fume hood body 1 will not be described in detail. In use, the fan is turned on through the control panel 1.4. After the fan generates an upward suction force, the operator places the equipment required for the experiment on the operating table 1.2, and then pulls down the viewing window 1.7 to partially block the front of the operating table 1.2. The toxic exhaust gas generated during the experiment can then be sucked away by the suction force generated by the fan.
[0023] like Figure 1 and Figure 2 As shown, a connecting rod 5 is horizontally arranged on the top of the operating table 1.2 on the fume hood body 1. The connecting rod 5 is preferably a square rod, so that it can be placed more stably on the operating table 1.2.
[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, two limiting rings 8 are provided on the connecting rod 5, arranged vertically, and connected together by a support rod 11. The lower limiting ring 8 is connected to the connecting rod 5 by a fixing rod 9. This section of the design constitutes a limiting assembly for limiting the experimental apparatus. When the support rod 11 is installed, it is vertically positioned, and the limiting rings 8 are horizontally positioned. The upper end of the support rod 11 is fixed to the upper limiting ring 8, and the lower end is fixed to the lower limiting ring 8. Preferably, the support rod 11 is on the left side. The two right-hand rods provide a more stable fixation of the two limiting rings 8 together. During installation, one end of the fixing rod 9 is fixed to the lower limiting ring 8, and the other end is fixed to the connecting rod 5. Therefore, when the lower limiting ring 8 is fixed to the connecting rod 5 via the fixing rod 9, it also causes the support rod 11 and the upper limiting ring 8 to be limited on the connecting rod 5. In use, because there are two limiting rings 8, one above the other, and they are horizontally positioned, the two limiting rings 8 are interconnected, allowing experimental equipment to be placed between the two limiting rings 8, for example... Figure 1 The narrow-mouth bottle 6 and test tube 7 are shown in the image; therefore, the experimental apparatus can be limited by the design of the limiting ring 8. Since the connecting rod 5 is located on the operating table 1.2 and the limiting component is located on the connecting rod 5, the apparatus required for the experiment can be limited on the operating table 1.2, avoiding the problem of knocking over the experimental apparatus during the use of the experimental apparatus, so that the experimental apparatus can be used more stably.
[0025] In the specific implementation process, the limiting ring 8 in the limiting component can be multiple, such as three or four, depending on the height of the experimental apparatus. The three or four limiting rings 8 are arranged from top to bottom and are connected together by the support rod 11. Therefore, the design of multiple limiting rings 8 can increase its height so as to be used for different experimental apparatuses.
[0026] like Figure 1 , Figure 2 and Figure 3 As shown, rubber rings 12 are provided on the inner sidewalls of the limiting rings 8. The outer sidewalls of the rubber rings 12 are fixed to the inner sidewalls of the limiting rings 8. Through the design of the rubber rings 12, when the experimental apparatus is placed inside the limiting rings 8, it will come into contact with the rubber rings 12. The rubber rings 12 are made of rubber material, which is relatively soft. Therefore, the problem of collision between the experimental apparatus and the limiting rings 8 and damage is avoided, making the experimental apparatus safer to be placed between the two limiting rings 8.
[0027] like Figure 1 and Figure 3As shown, the support rod 11 is a telescopic rod, consisting of two hollow rods, an upper rod and a lower rod. The upper end of the upper rod is fixed to the upper limiting ring 8, and the lower end of the lower rod is fixed to the lower limiting ring 8. The outer diameter of the upper rod is smaller than the inner diameter of the lower rod, and the lower end of the upper rod is inserted into the upper end of the lower rod. The lower rod has an internally threaded hole, and a fastening screw with a threaded fit is connected to the internal thread of the threaded hole. Therefore, the support rod 11 can extend and retract, thereby adjusting the distance between the two limiting rings 8. After adjusting to a suitable distance, the adjusted support rod 11 can be fixed by tightening the fastening screw. When the distance between the two limiting rings 8 is adjusted, it is convenient to use experimental instruments of different heights. For example, if the test tube in the experimental instrument is longer and the evaporating dish is shorter, it is convenient to adjust the height of the limiting ring 8 to adjust the height of the experimental instrument.
[0028] like Figure 1 As shown, the limiting components consist of several groups, arranged at equal intervals from left to right. This design facilitates the placement of different experimental instruments, simultaneously limiting the movement of multiple instruments. The equal spacing allows for separate limiting of different instruments, ensuring neat and orderly placement. This separate and orderly arrangement ensures unobstructed airflow during fan operation, effectively removing harmful gases and particles from the experimental area and reducing the risk of leakage into the laboratory environment. Separate placement also prevents cross-contamination between different experiments, ensuring accuracy and reliability. Furthermore, the neat arrangement helps researchers quickly locate the necessary instruments, improving work efficiency.
[0029] like Figure 1 and Figure 2 As shown, the sizes of several sets of limiting components are different. Since the outer diameters of different experimental instruments are not the same, the sizes of several sets of limiting components can be designed according to the size of the experimental instruments, so that the limiting ring 8 has different sizes. Then, different experimental instruments can select the corresponding limiting components to use, which improves the practicality in the process of use.
[0030] like Figure 1 and Figure 4As shown, connecting rod 5 is provided with connecting blocks 2, which consist of two blocks and are fixed to the left and right ends of connecting rod 5 respectively. Each connecting block 2 is fixed with an "L"-shaped locking block 3. The top of the operating platform 1.2 is fixed with two left-right oriented limiting blocks 4, each with a slot for the locking block 3 to engage. This section of the design constitutes a connecting assembly for detachably connecting connecting rod 5 to operating platform 1.2. The right side wall of the left connecting block 2 is fixed to the left end of connecting rod 5, and the left side wall of the right connecting block 2 is fixed to the right end of connecting rod 5. The left connecting block 2 and its locking block 3 form a "door" shape, as do the right connecting block 2 and its locking block 3. When the limiting blocks 4 are specifically fixed, the left limiting block 4 is fixed at the top of operating platform 1.2 near the left side plate 1.1, and the right limiting block 4 is fixed at the top of operating platform 1.2 near the right side plate 1.1. Slots are provided in both positions. At the top of the limiting block 4; when the locking block 3 is inserted into the slot, because the connecting block 2 and the locking block 3 form a "door" shaped structure, the left half of the locking block 3 on the left can be inserted into the slot on the left limiting block 4, and the right half of the locking block 3 on the right can be inserted into the slot on the right limiting block 4; when the locking blocks 3 are both inserted into the slots, the position of the locking blocks 3 can be limited, thereby limiting the position of the connecting block 2. The connecting block 2 is connected to the connecting rod 5, thus achieving the purpose of limiting the connecting rod 5 and connecting it to the top of the operating table 1.2; after the locking block 3 is removed from the slot, the connecting block 2 can be disassembled, thereby achieving the purpose of disassembling the connecting rod 5, thus achieving the purpose of detachable connection of the connecting rod 5; by connecting the connecting rod 5 to the operating table 1.2, the stability of the connecting rod 5 can be ensured, thereby enabling the limiting components on the connecting rod 5 to stably limit the experimental apparatus;
[0031] In the specific implementation process, a handle can be installed on the top of the card block 3 in the connecting component. The design of the handle makes it easy to lift the card block 3 upwards to move it out of the card slot.
[0032] like Figure 1 and Figure 2 As shown, an identification strip 10 is provided on the top of the operating table 1.2 on the fume hood body 1; Figure 2 The distance from the bottom of the middle operating table 1.2 to the position of the marking strip 10 is 15cm. The marking strip 10 is a safety distance line. Because during the experimental operation, the experiment needs to be carried out at a distance of more than 15cm from the operating opening on the operating table 1.2. By limiting this range, firstly, it can avoid the operator from coming into close contact with the waste generated during the experiment, and secondly, it can enable the fan at the position of the upper cabinet 1.6 to more comprehensively suck away the harmful waste gas and prevent harmful substances from overflowing.
[0033] In practical use: First, open the sliding door 1.5 on the fume hood body 1 and turn on the fan to generate suction above the operating table 1.2. Then, insert the connecting rod 5 onto the operating table 1.2. Next, insert the locking block 3 on the connecting block 2 into the slot on the limiting block 4 to connect the connecting rod 5 and prevent it from moving. Then, place the experimental equipment required for the experiment into the limiting ring 8 on the limiting component in sequence to limit the experimental equipment. Then, pull the sliding door 1.5 down to a suitable height, and the experimenter can then retrieve the experimental equipment within the limiting ring 8 to conduct the experiment. In this process, the design of the limiting component ensures that the experimental equipment remains stable, avoiding the problem of easily knocking over the experimental equipment.
Claims
1. Laboratory ventilation apparatus comprising a fume hood body (1), characterized in that: The operating table (1.2) on the fume hood body (1) is horizontally provided with a connecting rod (5) on the top, the connecting rod (5) is provided with a limiting assembly for limiting experimental instruments; the connecting rod (5) is provided with a connecting assembly for detachably connecting the connecting rod (5) to the operating table (1.2).
2. Laboratory fume hood according to claim 1, characterized in that: The limiting assembly comprises two limiting rings (8) arranged in an upper-lower manner, and the two limiting rings (8) are connected together through a supporting rod (11); the lower limiting ring (8) is connected to the connecting rod (5) through a fixing rod (9).
3. Laboratory fume cupboard according to claim 2, characterised in that: The inner side walls of the limiting rings (8) are provided with rubber rings (12).
4. Laboratory fume cupboard according to claim 3, characterised in that: The supporting rod (11) is a telescopic rod.
5. The laboratory fume hood of claim 1, wherein: The limiting assembly is several groups, and the several groups of limiting assemblies are arranged at equal intervals from left to right.
6. Laboratory fume hood according to claim 5, characterized in that: The several groups of limiting assemblies are of different sizes.
7. The laboratory fume hood of claim 1, wherein: The connecting assembly comprises two connecting blocks (2) fixed to the left and right ends of the connecting rod (5); the connecting blocks (2) are fixed with clamping blocks (3) of an "L" type structure; the top of the operating table (1.2) is fixed with two limiting blocks (4) arranged in a left-right manner, and the limiting blocks (4) are provided with clamping grooves for clamping the clamping blocks (3).
8. The laboratory fume hood of claim 1, wherein: The operating table (1.2) on the fume hood body (1) is provided with an identification strip (10) on the top.