Explosion-proof ventilation cabinet for laboratory

Abstract

The utility model discloses a laboratory explosion-proof ventilation cabinet which comprises a cabinet body, an operation bin is arranged in the cabinet body, a first exhaust hole is formed in the top of the operation bin, a sealing door is further arranged in front of the operation bin in a sliding mode, a waste gas treatment structure is arranged on the top of the cabinet body, and an exhaust fan is installed on the waste gas treatment structure. A sealing adjusting structure is arranged in the operation bin; the waste gas treatment structure comprises a treatment bin, a first filter cavity and a second filter cavity are formed in the treatment bin, a plurality of groups of second exhaust holes are uniformly distributed between the first filter cavity and the second filter cavity, the first exhaust holes are communicated with the first filter cavity, and the exhaust fan is communicated with the second filter cavity. And a first cleaning plate is slidably arranged in the first filtering cavity, and a first filtering plate is mounted on the side wall of the first cleaning plate. The utility model relates to the technical field of ventilation cabinets, and particularly provides an explosion-proof ventilation cabinet for a laboratory.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to an explosion-proof fume hood for a laboratory. Background Art

[0002] Laboratory fume hoods are equipment used to protect experimenters from harmful gases, dust and other pollution. They are usually used in various laboratory environments such as chemistry, biology, and medicine. The fume hood draws air from the cabinet through the exhaust system and discharges pollutants to the outside, thereby keeping the air inside the laboratory clean and safe.

[0003] The existing laboratory explosion-proof fume hoods have relatively simple functions. They can only force the discharge of harmful gases and dust, but cannot perform effective pre-treatment, which will pollute the environment. If the exhaust gas is collected and treated centrally, the cost will be high. In addition, the fume hoods are generally top-exhausted, and only have a good exhaust effect when the cabinet is sealed. This affects the normal use of the cabinet and lacks the function of local sealed exhaust. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing laboratory explosion-proof fume hoods have a single function and do not have the function of treating exhaust gas. The centralized collection and treatment has a high cost. In addition, they do not have the function of sealing exhaust at local locations, which affects the specific use of the fume hood during the exhaust process.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: The utility model proposes a laboratory explosion-proof fume hood, comprising a cabinet body, an operation chamber is arranged in the cabinet body, an exhaust hole 1 is arranged on the top of the operation chamber, a sealing door is also slidably arranged in front of the operation chamber, an exhaust gas treatment structure is arranged on the top of the cabinet body, an exhaust fan is installed on the exhaust gas treatment structure, and a sealing adjustment structure is arranged in the operation chamber; the exhaust gas treatment structure comprises a processing chamber, a first filter chamber and a second filter chamber are arranged in the processing chamber, a plurality of groups of exhaust holes 2 are evenly arranged between the first filter chamber and the second filter chamber, the exhaust hole 1 is connected with the first filter chamber, the exhaust fan is connected with the second filter chamber, a first cleaning plate is slidably arranged in the first filter chamber, a first filter plate is installed on the side wall of the first cleaning plate, a second cleaning plate is slidably arranged in the second filter chamber, and a second filter plate is installed on the side wall of the second cleaning plate.

[0006] Preferred technical solution one: the sealing adjustment structure includes a driving screw, a driving motor, a sliding rod, a guide rod and a sealing assembly. The inner side walls of the operating chamber are provided with installation grooves, and the two ends of the driving screw are rotatably arranged on the opposite side walls in the installation groove. The guide rod is installed in another group of installation grooves. The driving motor is arranged on the front wall of the cabinet and the power output shaft is connected to the driving screw. The driving screw is provided with a sliding block 1 through a threaded connection. The sliding block 1 is slidably arranged on the inner side wall of the installation groove. The guide rod is slidably provided with a sliding block 2. The two ends of the sliding rod are respectively connected to the sliding block 1 and the sliding block 2, and the sealing assembly is installed on the sliding rod.

[0007] Preferred technical solution two: the sealing assembly includes a sliding sleeve, a mounting plate, an electric telescopic rod and a sealing cover, the sliding sleeve is slidably arranged on the sliding rod, the mounting plate is arranged at the bottom of the sliding sleeve, the electric telescopic rod is arranged at the bottom of the mounting plate, the sealing cover is installed on the free end of the electric telescopic rod, and the sealing cover is connected to the first filter chamber by a hose.

[0008] Preferred technical solution three: a transparent observation window is also provided on the front side of the sealing cover.

[0009] Preferred technical solution four: the first filter plate is a non-woven fabric first filter plate, and the second filter plate is an activated carbon second filter plate.

[0010] Preferred technical solution five: the front wall of the cabinet is also provided with a control display screen, and the exhaust fan, electric telescopic rod and drive motor are all electrically connected to the control display screen.

[0011] The utility model proposes a laboratory explosion-proof fume hood, which adopts the above structure to achieve the following beneficial effects:

[0012] (1) The exhaust gas inside the operation chamber is treated by the exhaust gas treatment structure and the exhaust fan. The first filter plate can treat larger dust particles in the exhaust gas, and the second filter plate absorbs the exhaust gas through activated carbon. The two sets of filter plates work together to improve the filtration efficiency while reducing the replacement frequency of the second activated carbon filter plate.

[0013] (2) The sealing adjustment structure can flexibly adjust the position of the sealing cover to seal and exhaust the specific exhaust gas generation point without affecting other operations of the fume hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1This is a schematic diagram of the overall structure of a laboratory explosion-proof fume hood proposed by the utility model Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of a laboratory explosion-proof fume hood proposed by the utility model Figure 2 ;

[0017] Figure 3 The utility model is a schematic cross-sectional structural diagram of a laboratory explosion-proof fume hood.

[0018] Among them, 1. cabinet, 2. operation chamber, 3. exhaust hole 1, 4. sealing door, 5. exhaust gas treatment structure, 6. exhaust fan, 7. sealing adjustment structure, 8. treatment chamber, 9. first filter chamber, 10. second filter chamber, 11. exhaust hole 2, 12. first cleaning plate, 13. first filter plate, 14. second cleaning plate, 15. second filter plate, 16. driving screw, 17. driving motor, 18. sliding rod, 19. mounting groove, 20. sliding block 1, 21. sliding sleeve, 22. mounting plate, 23. electric telescopic rod, 24. sealing cover, 25. transparent observation window, 26. control display screen. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] Embodiment 1

[0022] like Figures 1 to 3As shown, the technical solution adopted by the utility model is as follows: a laboratory explosion-proof fume hood, including a cabinet body 1, an operation chamber 2 is arranged in the cabinet body 1, an exhaust hole 3 is arranged on the top of the operation chamber 2, a sealing door 4 is also slidably arranged in front of the operation chamber 2, an exhaust gas treatment structure 5 is arranged on the top of the cabinet body 1, an exhaust fan 6 is installed on the exhaust gas treatment structure 5, and a sealing adjustment structure 7 is arranged in the operation chamber 2; the exhaust gas treatment structure 5 includes a treatment chamber 8, a first filter chamber 9 and a second filter chamber 10 are arranged in the treatment chamber 8, and the first filter chamber 9 and the second filter chamber 10 are provided. A plurality of exhaust holes 11 are evenly distributed between the filter chambers 10, the exhaust holes 3 are connected to the first filter chamber 9, the exhaust fan 6 is connected to the second filter chamber 10, a first cleaning plate 12 is slidably provided in the first filter chamber 9, a first filter plate 13 is installed on the side wall of the first cleaning plate 12, a second cleaning plate 14 is slidably provided in the second filter chamber 10, a second filter plate 15 is installed on the side wall of the second cleaning plate 14, the first filter plate 13 is a non-woven fabric first filter plate 13, and the second filter plate 15 is an activated carbon second filter plate 15.

[0023] Embodiment 2

[0024] Based on the first embodiment, Figure 2 and Figure 3 As shown, the sealing adjustment structure 7 includes a driving screw 16, a driving motor 17, a sliding rod 18, a guide rod and a sealing assembly. The inner side walls of the operation chamber 2 are provided with mounting grooves 19. The two ends of the driving screw 16 are rotatably arranged in the opposite side walls of the mounting grooves 19. The guide rod is installed in another group of mounting grooves 19. The driving motor 17 is arranged on the front wall of the cabinet 1 and the power output shaft is connected to the driving screw 16. The driving screw 16 is provided with a sliding block 20 through a threaded connection. The sliding block 20 is slidably arranged on the inner side wall of the mounting groove 19. The guide rod is slidably provided with a sliding block 2. The two ends of the rod 18 are respectively connected to the sliding block 1 20 and the sliding block 2. The sealing assembly is installed on the sliding rod 18. The sealing assembly includes a sliding sleeve 21, a mounting plate 22, an electric telescopic rod 23 and a sealing cover 24. The sliding sleeve 21 is slidably arranged on the sliding rod 18, the mounting plate 22 is arranged at the bottom of the sliding sleeve 21, the electric telescopic rod 23 is arranged at the bottom of the mounting plate 22, and the sealing cover 24 is installed on the free end of the electric telescopic rod 23. The sealing cover 24 is connected to the first filter chamber 9 through a hose, and a transparent observation window 25 is also provided on the front side of the sealing cover 24.

[0025] A control display screen 26 is also provided on the front wall of the cabinet 1 , and the exhaust fan 6 , the electric telescopic rod 23 and the drive motor 17 are all electrically connected to the control display screen 26 .

[0026] During specific use, experimental operations are carried out in the operating chamber 2. When exhaust gas is generated, the position of the sealing component is adjusted. Specifically, the driving motor 17 drives the driving screw 16 to rotate, and then drives the sliding block 20 to move, thereby driving the sliding rod 18 to move. The mounting plate 22 is manually pushed to make the sliding sleeve 21 slide on the sliding rod 18 to adjust the position, and then the electric telescopic rod 23 is started to make the sealing cover 24 drop to the smoke-generating position without affecting other operations. At the same time, the exhaust gas is filtered through the non-woven first filter plate 13 and the activated carbon second filter plate 15.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laboratory explosion-proof fume hood, comprising a cabinet body, wherein an operation compartment is provided in the cabinet body, characterized in that: An exhaust hole 1 is provided on the top of the operation chamber, and a sealing door is also slidably provided in front of the operation chamber. An exhaust gas treatment structure is provided on the top of the cabinet, and an exhaust fan is installed on the exhaust gas treatment structure. A sealing adjustment structure is provided in the operation chamber; the exhaust gas treatment structure includes a treatment chamber, and a first filter chamber and a second filter chamber are provided in the treatment chamber, and a plurality of groups of exhaust holes 2 are evenly distributed between the first filter chamber and the second filter chamber. The exhaust hole 1 is connected with the first filter chamber, and the exhaust fan is connected with the second filter chamber. A first cleaning plate is slidably provided in the first filter chamber, and a first filter plate is installed on a side wall of the first cleaning plate. A second cleaning plate is slidably provided in the second filter chamber, and a second filter plate is installed on a side wall of the second cleaning plate.

2. A laboratory explosion-proof fume hood according to claim 1, characterized in that: The sealing adjustment structure includes a driving screw, a driving motor, a sliding rod, a guide rod and a sealing assembly. The inner side walls of the operating chamber are provided with mounting grooves. The two ends of the driving screw are rotatably arranged on the opposite side walls in the mounting grooves. The guide rod is installed in another group of mounting grooves. The driving motor is arranged on the front wall of the cabinet and the power output shaft is connected to the driving screw. The driving screw is provided with a sliding block 1 through a threaded connection. The sliding block 1 is slidably arranged on the inner side wall of the mounting groove. The guide rod is slidably provided with a sliding block 2. The two ends of the sliding rod are respectively connected to the sliding block 1 and the sliding block 2. The sealing assembly is installed on the sliding rod.

3. A laboratory explosion-proof fume hood according to claim 2, characterized in that: The sealing assembly includes a sliding sleeve, a mounting plate, an electric telescopic rod and a sealing cover. The sliding sleeve is slidably arranged on the sliding rod, the mounting plate is arranged at the bottom of the sliding sleeve, the electric telescopic rod is arranged at the bottom of the mounting plate, the sealing cover is installed on the free end of the electric telescopic rod, and the sealing cover is connected to the first filter chamber through a hose.

4. A laboratory explosion-proof fume hood according to claim 3, characterized in that: The front side of the sealing cover is also provided with a transparent observation window.

5. A laboratory explosion-proof fume hood according to claim 4, characterized in that: The first filter plate is a non-woven fabric first filter plate, and the second filter plate is an activated carbon second filter plate.

6. A laboratory explosion-proof fume hood according to claim 5, characterized in that: The front wall of the cabinet is also provided with a control display screen, and the exhaust fan, the electric telescopic rod and the drive motor are all electrically connected to the control display screen.

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