Laboratory fume hood with explosion-proof

Abstract

The application discloses a laboratory explosion-proof ventilation cabinet, a glass window is embedded and fixed in a mounting frame, an embedded groove is arranged at the front end of the inner wall of the connecting part of the mounting frame and the glass window, a protection strip is hinged in the embedded groove, and the protection strip is tightly attached to the glass window after rotating out of the embedded groove; a sliding groove is arranged on the outer wall of the mounting frame and communicates with the embedded groove, a matched sliding block is arranged in the sliding groove, the sliding block can be slid to the two ends of the sliding groove and is magnetically connected and fixed, a connecting rod is hinged on the sliding block, and the other end of the connecting rod is hinged on the protection strip, and the explosion protection performance of the glass window is improved.

Description

Technical Field

[0001] This invention relates to the field of laboratory fume hood technology, and specifically to an explosion-proof fume hood for laboratory use. Background Technology

[0002] Cabinet-style exhaust hoods, commonly known as fume hoods, are similar to enclosed hoods. Small parts spray painting cabinets and chemical laboratory fume hoods are typical examples of cabinet-style exhaust hood structures. In laboratories, especially during certain specialized chemical experiments, chemicals are highly volatile and harmful to the human body. Prolonged exposure to these chemicals can cause significant damage to the health of laboratory personnel. Therefore, to ensure greater safety in chemical experiments and protect the health and safety of laboratory staff, preventing the inhalation or ingestion of toxic, pathogenic, or unidentified toxic chemicals and organisms, laboratories should have good ventilation. Using fume hoods, exhaust hoods, or localized ventilation is the most common choice for general organic chemistry laboratories.

[0003] In laboratories, the primary need for fume hoods is to ensure the safety of laboratory personnel. However, most fume hoods currently use steel wire ropes or other connecting devices to secure their glass windows due to the special installation requirements. This can easily lead to the windows falling off and shattering, thus endangering laboratory personnel. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In order to overcome the shortcomings of existing technology, an explosion-proof fume hood for laboratory use is proposed to solve the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] This invention is achieved through the following technical solution: This invention proposes an explosion-proof fume hood for laboratory use, including a cabinet body, on which a glass window and an exhaust hood are provided, and a mounting frame. The glass window is embedded and fixed in the mounting frame. A groove is provided at the front end of the inner wall of the mounting frame where it connects to the glass window. A protective strip is hinged in the groove, and after the protective strip rotates out of the groove, it adheres tightly to the glass window. A sliding groove is provided on the outer wall of the mounting frame, and the sliding groove communicates with the groove. A matching slider is provided in the sliding groove, and the slider can slide to both ends of the sliding groove and be magnetically connected and fixed. A connecting rod is hinged to the slider, and the other end of the connecting rod is hinged to the protective strip.

[0008] Furthermore, the exhaust hood is installed inside the cabinet via a lifting assembly, and the exhaust hood is connected to the ventilation opening via a corrugated pipe.

[0009] Furthermore, the lifting assembly includes a cylinder, the exhaust hood is slidably connected to the inside of the cabinet via a side rod, and the piston rod of the cylinder is connected to the side rod.

[0010] Furthermore, a filter screen is installed inside the vent.

[0011] Furthermore, the filter screen is an activated carbon filter screen.

[0012] Furthermore, an explosion-proof pad is provided at the fitting connection between the glass window and the mounting frame.

[0013] Furthermore, the explosion-proof pad is made of rubber.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The invention relates to an explosion-proof fume hood for laboratory use, wherein the glass window is fitted and fixed within the mounting frame, and an explosion-proof pad is added at the fitting and connection point to improve its shock and explosion-proof performance.

[0017] The outside of the glass window is equipped with a retractable and adjustable protective strip, which will not obstruct the field of vision during experimental operations, and will also provide explosion protection when the glass window is opened and closed.

[0018] The exhaust hood can be raised and lowered for adjustable control, thus meeting the exhaust requirements during experimental operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a front view of the connection structure between the glass window and the mounting frame of the present invention.

[0021] Figure 3 This is a side view of the connection structure between the glass window and the mounting frame of the present invention.

[0022] 1-Cabinet body; 2-Glass window; 21-Explosion-proof padding; 3-Mounting frame; 4-Inset groove; 41-Protective strip; 5-Slide groove; 51-Slider; 52-Connecting rod; 6-Exhaust hood; 61-Corrugated pipe; 62-Ventilation opening; 63-Side rod; 64-Filter screen; 7-Cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] like Figure 1-3 The diagram shows an explosion-proof fume hood for laboratory use, comprising a cabinet body 1, a glass window 2 and an exhaust hood 6 on the cabinet body 1, and a mounting frame 3. The glass window 2 is embedded and fixed in the mounting frame 3. A groove 4 is provided at the front end of the inner wall of the mounting frame 3 where it connects to the glass window 2. A protective strip 41 is hinged in the groove 4, and after the protective strip 41 rotates out of the groove 4, it is pressed against the glass window 2. A sliding groove 5 is provided on the outer wall of the mounting frame 3, and the sliding groove 5 communicates with the groove 4. A matching slider 51 is provided in the sliding groove 5, and the slider 51 can slide to both ends of the sliding groove 5 and be magnetically connected and fixed. A connecting rod 52 is hinged to the slider 51, and the other end of the connecting rod 52 is hinged to the protective strip 41.

[0025] In the preferred first embodiment, the exhaust hood 6 is installed inside the cabinet 1 via a lifting assembly. The exhaust hood 6 is connected to the ventilation opening 62 via a corrugated pipe 61. The height of the exhaust hood 6 is adjusted by the lifting assembly to meet the needs of different height positions of the exhaust hood 6 during the experiment.

[0026] As a further improvement, the lifting assembly includes a cylinder 7, and the exhaust hood 6 is slidably connected to the inside of the cabinet 1 via a side rod 63. The piston rod of the cylinder 7 is connected to the side rod 63.

[0027] Furthermore, a filter screen 64 is installed inside the vent 62.

[0028] Furthermore, the filter screen 64 is made of activated carbon. Through the activated carbon filter, impurities in the exhaust gas absorbed and discharged from the exhaust hood 6 can be adsorbed and filtered before being discharged.

[0029] As a preferred second embodiment, an explosion-proof pad 21 is provided at the fitting connection between the glass window 2 and the mounting frame 3.

[0030] As a further improvement, the explosion-proof pad 21 is made of rubber. By adding a rubber explosion-proof pad at the fitting and fixing point between the glass window 2 and the mounting frame 3, the impact explosion-proof performance of the glass window 2 is further improved.

[0031] The invention discloses an explosion-proof fume hood for laboratory use. During experiments, the position of the exhaust hood 6 inside the hood can be adjusted as needed to ensure its exhaust efficiency. Simultaneously, the glass viewing window 2 for experimental operations is reinforced with explosion-proof performance, ensuring the safety of operators during experiments.

[0032] Specifically, the glass window 2 is fitted into the mounting frame 3, and a rubber explosion-proof pad is added at the connection point where they fit together to improve its shock resistance and thus ensure its explosion-proof effect.

[0033] Secondly, when the glass window 2 is opened or closed, the protective strip 41 can be adjusted to press firmly against the glass window 2, thus ensuring its explosion-proof effect and preventing injury to experimental personnel. Under normal conditions, the protective strip 41 can be stored in the groove 4. When in use, by sliding the slider 51, it slides from one end of the groove 5 to the other and is magnetically fixed. At this time, driven by the connecting rod 52, the protective strip 41 is pushed out of the groove 4 and pressed firmly against the glass window 2, thus providing explosion-proof protection.

[0034] During experimental operation, the exhaust hood 6 can be adjusted in height. When adjusting in height, the cylinder 7 drives the side rod 61 connected to the exhaust hood 6 to slide up and down, thereby controlling the overall lifting and lowering movement of the exhaust hood 6.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A laboratory explosion-proof fume hood, comprising a cabinet body (1), wherein a glass viewing window (2) and an exhaust hood (6) are provided on the cabinet body (1), characterized in that: It also includes a mounting frame (3), the glass window (2) is embedded and fixed in the mounting frame (3), the front end of the inner wall of the mounting frame (3) where it connects with the glass window (2) is provided with a groove (4), a protective strip (41) is hinged in the groove (4), and after the protective strip (41) rotates out of the groove (4), it is attached to the glass window (2). A sliding groove (5) is provided on the outer wall of the mounting frame (3), and the sliding groove (5) is connected to the groove (4). A matching slider (51) is provided in the sliding groove (5), and the slider (51) can slide to both ends of the sliding groove (5) and be magnetically connected and fixed. A connecting rod (52) is hinged on the slider (51), and the other end of the connecting rod (52) is hinged to the protective strip (41).

2. The explosion-proof fume hood for laboratory use according to claim 1, characterized in that: The exhaust hood (6) is installed inside the cabinet (1) via a lifting assembly, and the exhaust hood (6) is connected to the ventilation opening (62) via a corrugated pipe (61).

3. The explosion-proof fume hood for laboratory use according to claim 2, characterized in that: The lifting assembly includes a cylinder (7), and the exhaust hood (6) is slidably connected to the inside of the cabinet (1) via a side rod (63). The piston rod of the cylinder (7) is connected to the side rod (63).

4. The explosion-proof fume hood for laboratory use according to claim 3, characterized in that: A filter screen (64) is installed inside the vent (62).

5. A laboratory explosion-proof fume hood according to claim 4, characterized in that: The filter screen (64) is an activated carbon filter screen.

6. The explosion-proof fume hood for laboratory use according to claim 1, characterized in that: An explosion-proof pad (21) is provided at the fitting connection between the glass window (2) and the mounting frame (3).

7. A laboratory explosion-proof fume hood according to claim 6, characterized in that: The explosion-proof pad (21) is made of rubber.

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