Explosion-proof ventilation cabinet

Abstract

The utility model discloses an explosion-proof ventilation cabinet which comprises a cabinet body, an air inducing cover, an exhaust pipe and an exhaust fan, the upper side of the cabinet body is connected with an air guiding box, one side of the air guiding box is communicated with the exhaust pipe, a piston plate is connected in the air guiding box in a sliding mode, and the other side of the air guiding box is respectively connected with two filtering boxes through two ventilation pipes. An air outlet of each filter box is connected with a main pipe through a branch pipe, and the main pipe is connected with the exhaust fan. The anti-explosion ventilation cabinet has the advantages that the filter box can be cleaned under the condition that the anti-explosion ventilation cabinet does not stop, and the efficiency of scientific research experiments can be improved.

Description

Technical Field

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

[0002] An explosion-proof fume hood is a safety device designed specifically for use in laboratory environments. It typically consists of a housing, filters, a fan, and a control system. Its primary function is to protect laboratory personnel and the environment from harmful substances. Its operating principle is to filter out harmful gases in the laboratory through a highly efficient filtration system and exhaust them outdoors, thereby ensuring the quality and safety of the air inside the laboratory. However, existing explosion-proof fume hood fans can draw in dust and larger impurities during operation, affecting the fan's normal operation and reducing its service life.

[0003] The existing application number is CN202322853205.1, which describes an explosion-proof fume hood. The hood includes a cabinet and a workbench. An exhaust fan is installed on the top of the cabinet, and an air duct is installed at the inlet of the exhaust fan. One end of the air duct is provided with an air hood located on the top of the workbench. A filter is detachably installed inside the hood, and a disassembly mechanism is provided between the filter and the hood. A cleaning mechanism is provided at the bottom of the filter. This device cleans the filter with the cleaning mechanism, but the filter still needs to be replaced later. This requires downtime for replacement, which affects the progress and efficiency of scientific research experiments. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an explosion-proof fume hood.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An explosion-proof fume hood comprises a cabinet body, an induced draft hood, an exhaust pipe and an exhaust fan. An air guide box is connected to the upper side of the cabinet body, the exhaust pipe is connected to one side of the air guide box, a piston plate is slidably connected in the air guide box, and two filter boxes are respectively connected to the other side of the air guide box through two ventilation pipes. The air outlet of each filter box is connected to a main pipe through a branch pipe, and the main pipe is connected to the exhaust fan.

[0007] Preferably, a driving member is connected to one side of the air guide box, and a driving rod of the driving member is connected to the piston plate.

[0008] Preferably, the piston plate (6) separates the air guide box (5) into a first air duct and a second air duct, and the first air duct and the second air duct are respectively connected to one of the ventilation pipes (7).

[0009] Preferably, the filter box includes a box body, a stepped through groove is provided on the upper side of the box body, a filter plate passes through the stepped through groove, the filter plate is arranged in the box body, and a mounting plate is connected to the upper side of the filter plate, and the mounting plate is detachably connected to the stepped through groove.

[0010] Preferably, a group of through holes are provided on each of the mounting plates, and a group of threaded blind holes are provided in each of the stepped through grooves. The threaded blind holes are arranged corresponding to the through holes, and bolts are passed through each through hole. The bolts are threadedly connected to the corresponding threaded blind holes, and a handle is connected to the upper side of each mounting plate.

[0011] Preferably, a positioning plate is connected to the bottom of each filter box, and a positioning groove is provided on the upper side of each positioning plate, and the filter plate is inserted and positioned in the positioning groove.

[0012] The advantages of the present invention are that: the explosion-proof fume hood provided by the present invention is provided with two filter boxes. When the first filter box is cleaned, the piston plate is driven to move in the air guide box by the driving member, so that the exhaust pipe can be connected to the second air duct, so that the extracted gas enters the second filter box through the second air duct for filtration. When the second filter box needs to be cleaned, the exhaust pipe is connected to the first air duct, so that the gas enters the first filter box through the first air duct for filtration, thereby realizing the cleaning of the filter box without stopping the explosion-proof fume hood, which can improve the efficiency of scientific research experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the principle structure of an explosion-proof fume hood provided by the utility model;

[0014] Figure 2 It is a structural diagram of the air guide box;

[0015] Figure 3 It is a structural diagram of the filter box. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] like Figure 1 As shown, the utility model provides an explosion-proof fume hood, which includes a cabinet body 1, an induced draft hood 2, an exhaust pipe 3 and an exhaust fan 4. The exhaust fan 4 extracts air from the fume hood 4 through the exhaust pipe 3 and the induced draft hood 2.

[0019] The air guide box 5 is connected to the upper side of the cabinet 1. Figure 2 As shown, a driving member 5.1 is connected to one side of the air guide box 5. In this embodiment, the driving member 5.1 is an electric push rod. A through hole is provided on the side wall of the air guide box 5. The driving rod of the electric push rod passes through the through hole. The driving rod of the driving member 5.1 is connected to the piston plate 6, and the piston plate 6 performs piston motion in the air guide box 5.

[0020] The piston plate 6 separates the air guide box 5 into a first air duct and a second air duct. The first air duct and the second air duct are respectively connected to a ventilation pipe 7. When the piston plate 6 moves, the exhaust pipe 3 can be connected to the first air duct or the second air duct, so that the air inside the cabinet 1 passes through the first air duct or the second air duct, and then enters the different filter boxes 8 mentioned below.

[0021] On the other side of the air guide box 5, two filter boxes 8 are connected through two ventilation pipes 7. Figure 3 As shown, the filter box 8 includes a box body 8.1, one side of the box body 8.1 is connected to the corresponding ventilation pipe 7, and a stepped groove 8.2 is provided on the upper side of the box body 8.1. A filter plate 8.3 passes through the stepped groove 8.2. The filter plate 8.3 is arranged in the box body 8.1, and a mounting plate 8.4 is connected to the upper side of the filter plate 8.3. The mounting plate 8.4 is detachably connected to the stepped groove 8.2.

[0022] That is, a set of through holes 8.7 is provided on each mounting plate 8.4, and a set of threaded blind holes 8.8 is provided in each stepped through groove 8.2. The threaded blind holes 8.8 are arranged corresponding to the through holes 8.7. Bolts are passed through each through hole 8.7, and the bolts are threadedly connected to the corresponding threaded blind holes 8.8.

[0023] A handle 8.9 is connected to the upper side of each mounting plate 8.4 to facilitate the extraction of the mounting plate 8.4, thereby extracting the filter plate 8.3 from the box body 8.1 for cleaning, and then inserting the filter plate 8.3 back into the box body 8.1 after cleaning.

[0024] The air outlet of each filter box 8 is connected to the main pipe 10 through a branch pipe 9 , and the main pipe 10 is connected to the exhaust fan 4 , and the air in the cabinet 1 is extracted through the exhaust fan 4 .

[0025] This fume hood is provided with two filter boxes 8. When cleaning the first filter box 8, the piston plate 6 is driven by the driving member 5.1 to move in the air guide box 5, so that the exhaust pipe 3 can be connected to the second air duct, and the extracted gas enters the second filter box 8 through the second air duct for filtration. When the second filter box 8 needs to be cleaned, the exhaust pipe 3 is connected to the first air duct, so that the gas enters the first filter box 8 through the first air duct for filtration, thereby realizing the cleaning of the filter box 8 without stopping the explosion-proof fume hood, which can improve the efficiency of scientific research experiments.

[0026] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof fume hood, comprising a cabinet body (1), an air hood (2), an exhaust pipe (3) and an exhaust fan (4), characterized in that: An air guide box (5) is connected to the upper side of the cabinet (1), the air guide box (5) is connected to the exhaust pipe (3) on one side, a piston plate (6) is slidably connected in the air guide box (5), and two filter boxes (8) are respectively connected to the other side of the air guide box (5) through two ventilation pipes (7), and the air outlet of each filter box (8) is connected to the main pipe (10) through a branch pipe (9), and the main pipe (10) is connected to the exhaust fan (4).

2. The explosion-proof fume hood according to claim 1, characterized in that: A driving member (5.1) is connected to one side of the air guide box (5), and a driving rod of the driving member (5.1) is connected to the piston plate (6).

3. The explosion-proof fume hood according to claim 1, characterized in that: The piston plate (6) separates the air guide box (5) into a first air duct and a second air duct, and the first air duct and the second air duct are respectively connected to one of the ventilation pipes (7).

4. The explosion-proof fume hood according to claim 1, characterized in that: The filter box (8) comprises a box body (8.1), a stepped through groove (8.2) is provided on the upper side of the box body (8.1), a filter plate (8.3) passes through the stepped through groove (8.2), the filter plate (8.3) is arranged in the box body (8.1), and a mounting plate (8.4) is connected to the upper side of the filter plate (8.3), and the mounting plate (8.4) is detachably connected to the stepped through groove (8.2).

5. The explosion-proof fume hood according to claim 4, characterized in that: A group of through holes (8.7) is provided on each of the mounting plates (8.4), and a group of threaded blind holes (8.8) is provided in each of the stepped through grooves (8.2). The threaded blind holes (8.8) are arranged corresponding to the through holes (8.7). A bolt passes through each of the through holes (8.7), and the bolt is threadedly connected to the corresponding threaded blind hole (8.8). A handle (8.9) is connected to the upper side of each mounting plate (8.4).

6. The explosion-proof fume hood according to claim 4, characterized in that: A positioning plate (8.5) is connected to the bottom of each filter box (8), and a positioning groove (8.6) is provided on the upper side of each positioning plate (8.5), and the filter plate (8.3) is inserted and positioned in the positioning groove (8.6).

Images