Intelligent laboratory ventilation cabinet

Abstract

The utility model discloses an intelligent laboratory fume hood which comprises a fume hood body, an outer frame is arranged in a ventilation cavity of the fume hood body, an inner frame is arranged in the outer frame, a positioning plate is installed in the middle of the inner frame, a positioning opening for sleeving the upper portion of equipment is formed in the middle of the positioning plate, and a plurality of pull rods for pulling the positioning opening outwards are arranged in the positioning opening. Adjusting mechanisms for changing the positions of the pull rods are installed at the upper ends of the pull rods, air cylinders are perpendicularly installed at the two ends of the outer frame, and fixing blocks are installed at the upper ends of the air cylinders and installed on the inner wall face of the ventilation cavity. The positioning device is simple in structure, the positioning opening can be arranged above equipment in a sleeving mode, the upper portion of the equipment can be positioned, the equipment is prevented from toppling over, stability and safety are improved, the positioning opening can be adjusted according to the size of the equipment, and adaptability is improved.

Description

Technical Field

[0001] This utility model relates to the field of fume hood technology, specifically to an intelligent laboratory fume hood. Background Technology

[0002] Fume hoods (also known as fume hoods or toxic hoods) are essential safety equipment in laboratories, used to protect users and the laboratory environment when conducting chemical experiments and other experiments that may generate harmful gases and fumes. They control exposure to hazardous chemicals by capturing, venting, and replacing air.

[0003] Currently, the fume hoods used in laboratories have a simple structure and lack positioning functions inside the ventilation cavity. The equipment used in experiments is placed directly on the bottom surface of the ventilation cavity. During use, if an impact occurs, the equipment is prone to tipping over, causing the internal chemical liquids to leak out, thus creating danger and polluting the external environment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an intelligent laboratory fume hood that can position equipment of different sizes by moving left and right and up and down, thus solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: an intelligent laboratory fume hood, comprising a fume hood, wherein the ventilation cavity of the fume hood is provided with an outer frame, the outer frame is provided with an inner frame, a positioning plate is installed in the middle of the inner frame, a positioning opening is provided in the middle of the positioning plate to cover the top of the equipment, multiple pull rods are provided inside the positioning opening to pull the positioning opening outward, and an adjustment mechanism for changing the position of the pull rod is installed at the upper end of each pull rod, and cylinders are vertically installed at both ends of the outer frame, with fixing blocks installed at the upper ends of the cylinders, and the fixing blocks are installed on the inner wall of the ventilation cavity.

[0006] As a preferred technical solution, the adjustment mechanism includes a fixed rod, an adjustment rod, a handle, and a fixed sleeve. The fixed sleeve is installed on the top surface of the inner frame. One end of the adjustment rod is threaded into the fixed sleeve, and the other end extends to the outside and is equipped with a handle. One end of the fixed rod is installed on the pull rod, and the other end is inserted into the fixed sleeve and is movably connected to the adjustment rod.

[0007] As a preferred technical solution, grooves are provided on both sides of the inner frame, and multiple mounting ports are provided at both ends of the inner frame in the width direction. A slider is provided in each mounting port. One end of each slider protrudes from the mounting port and is slidably disposed in the groove, while the other end extends into the inner frame and is fitted with a pressure plate. A compression spring is fitted on each slider. One end of each compression spring is installed on the inner side of the inner frame, and the other end is installed on the panel.

[0008] As a preferred technical solution, screw holes are provided at both ends of the inner frame in the width direction, and hand-tightening bolts are threaded into the screw holes. One end of each hand-tightening bolt extends into the slide groove and abuts against the inner wall of the slide groove.

[0009] As a preferred technical solution, the positioning plate is made of rubber material.

[0010] As a preferred technical solution, the pull rod is protected by a rubber layer.

[0011] The beneficial effects of this utility model are: the utility model has a simple structure, and the outer shell and inner frame can be automatically moved by the cylinder, and the inner frame can move along the slide groove until the positioning port is aligned with the equipment. After moving downward, the positioning port can fit over the top of the equipment, which can position the top of the equipment and prevent the equipment from tipping over, thus increasing stability and safety. In addition, the positioning port can be adjusted according to the size of the equipment, increasing adaptability. At the same time, the inner frame can be quickly disassembled, further adapting to different equipment. Attached Figure Description

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model after the fume hood is removed;

[0015] Figure 3 This is a schematic diagram of the inner frame in this utility model.

[0016] The components are: 1. Fume hood; 2. Outer frame; 3. Inner frame; 4. Positioning plate; 5. Positioning port; 6. Cylinder; 7. Fixing block; 8. Slide groove; 9. Pull rod; 11. Fixing rod; 12. Adjusting rod; 13. Fixing sleeve; 14. Panel; 15. Compression spring; 16. Hand-tightening bolt; 17. Hand grip; 18. Slider. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0019] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses an intelligent laboratory fume hood, including a fume hood 1. The fume hood 1 has an outer frame 2 inside the ventilation cavity, and an inner frame 3 inside the outer frame 2. A positioning plate 4 is installed in the middle of the inner frame 3. The positioning plate 4 has a positioning opening 5 in the middle to cover the top of the equipment. The positioning opening 5 has multiple pull rods 9 inside to pull the positioning opening 5 outward. Each pull rod 9 has an adjustment mechanism installed at its upper end to change the position of the pull rod 9. Cylinders 6 are vertically installed at both ends of the outer frame 2. A fixing block 7 is installed at the upper end of the cylinder 6 and is installed on the inner wall of the ventilation cavity.

[0021] In this embodiment, the adjustment mechanism includes a fixed rod 11, an adjustment rod 12, a handle 17, and a fixed sleeve 13. The fixed sleeve 13 is installed on the top surface of the inner frame 3. One end of the adjustment rod 12 is threaded into the fixed sleeve 13, and the other end extends to the outside and is equipped with a handle 17. One end of the fixed rod 11 is installed on the pull rod 9, and the other end is inserted into the fixed sleeve 13 and is movably connected to the adjustment rod 12.

[0022] The fixed rod protrudes towards the adjusting rod to form a connecting part. A connecting groove is provided on one end face of the adjusting rod. The connecting part is movably set in the connecting groove. Both the connecting part and the connecting groove are set in a conical shape, so that the movement of the adjusting rod can pull the fixed rod, but the fixed rod will not rotate.

[0023] In this embodiment, the outer frame 2 has grooves 8 on both sides inside, and the inner frame 3 has multiple mounting ports at both ends in the width direction. Each mounting port has a slider 18. One end of each slider 18 protrudes from the mounting port and is slidably disposed in the groove 8. The other end extends into the interior of the inner frame 3 and is fitted with a pressure plate. Each slider 18 is fitted with a compression spring 15. One end of each compression spring 15 is installed on the inner side of the inner frame 3, and the other end is installed on the panel 14.

[0024] When replacing or disassembling the inner frame, the slider can be pulled through the panel. After the slider disengages from the groove, the inner frame can be directly removed from the outer shell, making disassembly convenient.

[0025] In this embodiment, screw holes are provided at both ends of the inner frame 3 in the width direction, and hand-tightening bolts 16 are threaded into the screw holes. One end of each hand-tightening bolt 16 extends into the slide groove 8 and abuts against the inner wall surface of the slide groove 8.

[0026] After the inner frame is positioned, the hand-tightening bolt can be rotated so that one end of the hand-tightening bolt can abut against the inner wall of the slide. Conversely, when the inner frame needs to be moved, the hand-tightening bolt can be rotated in the opposite direction. After the hand-tightening bolt is disengaged from the inner wall of the slide, the inner frame can move along the slide to change its position.

[0027] In this embodiment, the positioning plate 4 is made of rubber material, which allows the positioning opening on the positioning plate to expand and shrink, and the rubber is transparent, so that the equipment can be seen through the positioning plate.

[0028] In this embodiment, the outer surface of the pull rod 9 is protected by a rubber layer, which prevents the outer wall of the pull rod from directly contacting the outer wall of the equipment, increases elasticity, and avoids damage to the outer wall of the equipment.

[0029] After the equipment is placed inside the ventilation cavity, the inner frame can move laterally. During the movement, the inner frame can move along the slide groove via a slider. The movement of the inner frame drives the positioning plate. After the positioning port on the positioning plate is aligned with the equipment, the cylinder can be activated to extend the piston rod of the cylinder, thereby automatically moving the outer shell downward. The movement of the outer frame drives the inner frame and the positioning plate until the positioning port is fitted over the equipment. This can position the top of the equipment, prevent the equipment from tipping over, and increase stability and safety.

[0030] The size of the positioning opening can be adjusted according to the size of the equipment. During adjustment, the adjusting rod can be rotated by holding the lever, causing the adjusting rod to move outward or inward along the internal thread of the fixed sleeve. The movement of the adjusting rod drives the fixed rod and the pull rod. The movement of the pull rod can pull the positioning opening outward, making the positioning opening larger. Conversely, after the pull rod moves inward, the elasticity of the positioning plate can make the positioning opening smaller, thus adapting to equipment of different sizes and increasing adaptability.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An intelligent laboratory fume hood, characterized in that: The equipment includes a fume hood (1), the ventilation cavity of the fume hood (1) is provided with an outer frame (2), the inner frame (3) is provided inside the outer frame (2), a positioning plate (4) is installed in the middle of the inner frame (3), a positioning port (5) is provided in the middle of the positioning plate (4) to cover the top of the equipment, and multiple pull rods (9) are provided inside the positioning port (5) to pull the positioning port (5) outward. The upper end of each pull rod (9) is provided with an adjustment mechanism to change the position of the pull rod (9). Cylinders (6) are vertically installed at both ends of the outer frame (2), and a fixing block (7) is installed at the upper end of the cylinder (6). The fixing block (7) is installed on the inner wall of the ventilation cavity.

2. The intelligent laboratory fume hood according to claim 1, characterized in that: The adjustment mechanism includes a fixed rod (11), an adjustment rod (12), a handle (17), and a fixed sleeve (13). The fixed sleeve (13) is installed on the top surface of the inner frame (3). One end of the adjustment rod (12) is threaded into the fixed sleeve (13), and the other end extends to the outside and is equipped with a handle (17). One end of the fixed rod (11) is installed on the pull rod (9), and the other end is inserted into the fixed sleeve (13) and is movably connected to the adjustment rod (12).

3. The intelligent laboratory fume hood according to claim 1, characterized in that: The outer frame (2) has grooves (8) on both sides inside. The inner frame (3) has multiple mounting holes at both ends in the width direction. Each mounting hole has a slider (18). One end of each slider (18) protrudes from the mounting hole and slides in the groove (8). The other end extends into the inner frame (3) and is fitted with a pressure plate. Each slider (18) is fitted with a compression spring (15). One end of each compression spring (15) is installed on the inner side of the inner frame (3), and the other end is installed on the panel (14).

4. The intelligent laboratory fume hood according to claim 1, characterized in that: Screw holes are provided at both ends of the inner frame (3) in the width direction. Each screw hole is threaded with a hand-tightening bolt (16). One end of each hand-tightening bolt (16) extends into the slide groove (8) and abuts against the inner wall of the slide groove (8).

5. The intelligent laboratory fume hood according to claim 1, characterized in that: The positioning plate (4) is made of rubber material.

6. The intelligent laboratory fume hood according to claim 1, characterized in that: The tie rod (9) is protected by a rubber layer.

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