Background
The explosion-proof ventilating cabinet is a safety device specially used in laboratory environment, and is generally composed of a shell, a filter, a fan, a control system and the like, and has the main effects of protecting laboratory personnel and the environment from being affected by harmful substances. However, when the fan of the existing explosion-proof ventilating cabinet operates, dust and larger impurities are sucked, normal use of the fan is affected, and service life of the fan is shortened.
The utility model provides an explosion-proof fume chamber of current application number CN202322853205.1, this fume chamber includes the cabinet body and workstation, the top of the cabinet body is provided with the air exhauster, the induced air pipe is installed to the import department of air exhauster, the one end of induced air pipe is provided with the induced air cover that is located the workstation top, the inside demountable installation of induced air cover has the filter screen, be provided with detaching mechanism between filter screen and the induced air cover, the bottom of filter screen is provided with clean mechanism. The device cleans the filter screen through clean mechanism, but follow-up still need change the filter screen, need stop when changing the filter screen and change, can influence the progress and the efficiency of scientific research experiment.
Disclosure of utility model
The utility model aims to solve the defects in the prior art and provides an explosion-proof type fume chamber.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an explosion-proof formula fume chamber, includes the cabinet body, induced draft cover, exhaust tube and air exhauster the upper side of the cabinet body is connected the air guide box, communicates in one side of air guide box the exhaust tube, sliding connection piston board in the air guide box, two rose boxes are connected respectively through two ventilation pipes in the opposite side of air guide box, and the air outlet department of every rose box is all responsible for through the leg joint, is responsible for and is connected the air exhauster.
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.
Preferably, the piston plate (6) divides the air guide box (5) into a first air channel and a second air channel, and the first air channel and the second air channel are respectively connected with one ventilation pipe (7).
Preferably, the filter box comprises a box body, a stepped through groove is formed in the upper side of the box body, the filter plate penetrates through the stepped through groove, the filter plate is arranged in the box body, a mounting plate is connected to the upper side of the filter plate, and the mounting plate is detachably connected in the stepped through groove.
Preferably, a group of through holes are formed in each mounting plate, a group of threaded blind holes are formed in each stepped through groove, the threaded blind holes are correspondingly formed in the through holes, each through hole penetrates through a bolt, the bolts are in threaded connection with the corresponding threaded blind holes, and handles are connected to the upper sides of the mounting plates.
Preferably, the bottom in each filter box is connected with a positioning plate, the upper side of each positioning plate is provided with a positioning groove, and the filter plate is inserted and positioned in the positioning groove.
The explosion-proof type fume hood has the advantages that the two filter boxes are arranged, when the first filter box is cleaned, the driving piece drives the piston plate to move in the air guide box, so that the exhaust pipe can be communicated with the second air channel, extracted gas enters the second filter box through the second air channel to be filtered, when the second filter box needs to be cleaned, the exhaust pipe is communicated with the first air channel, and the gas enters the first filter box through the first air channel to be filtered, thereby realizing the cleaning of the filter boxes under the condition that the explosion-proof fume hood is not stopped, and improving the efficiency of scientific research experiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1, the explosion-proof fume hood provided by the utility model comprises a hood body 1, an induced draft hood 2, an exhaust pipe 3 and an exhaust fan 4, wherein the exhaust fan 4 is used for extracting air in the fume hood 4 through the exhaust pipe 3 and the induced draft hood 2.
The upper side of the cabinet body 1 is connected with an air guide box 5, as shown in fig. 2, one side of the air guide box 5 is connected with a driving piece 5.1, in this embodiment, the driving piece 5.1 is an electric push rod, a through hole is formed in the side wall of the air guide box 5, a driving rod of the electric push rod penetrates through the through hole, the driving rod of the driving piece 5.1 is connected with a piston plate 6, and the piston plate 6 performs piston motion in the air guide box 5.
The piston plate 6 separates the air guide box 5 into a first air channel and a second air channel, the first air channel and the second air channel are respectively connected with a ventilation pipe 7, when the piston plate 6 moves, the exhaust pipe 3 can be communicated with the first air channel or the second air channel, and air in the cabinet body 1 passes through the first air channel or the second air channel, so that the air enters the different filter boxes 8 below.
Two filter boxes 8 are respectively connected to the other side of the air guide box 5 through two ventilation pipes 7, as shown in fig. 3, each filter box 8 comprises a box body 8.1, one side of each box body 8.1 is communicated with the corresponding ventilation pipe 7, a stepped through groove 8.2 is formed in the upper side of each box body 8.1, the filter plates 8.3 penetrate through the stepped through grooves 8.2, the filter plates 8.3 are arranged in the box bodies 8.1, a mounting plate 8.4 is connected to the upper side of each filter plate 8.3, and the mounting plates 8.4 are detachably connected in the stepped through grooves 8.2.
Namely, each mounting plate 8.4 is provided with a group of through holes 8.7, each stepped through groove 8.2 is internally provided with a group of threaded blind holes 8.8, the threaded blind holes 8.8 are correspondingly arranged with the through holes 8.7, each through hole 8.7 passes through a bolt, the corresponding threaded blind holes 8.8 are connected with the bolts in a threaded manner,
The upper side of each mounting plate 8.4 is connected with a lifting handle 8.9, so that the mounting plates 8.4 are conveniently extracted, the filter plates 8.3 are extracted from the box body 8.1 to be cleaned, and the filter plates 8.3 are inserted back into the box body 8.1 after cleaning.
The air outlet of each filter box 8 is connected with a main pipe 10 through a branch pipe 9, the main pipe 10 is connected with an exhaust fan 4, and air in the cabinet body 1 is extracted through the exhaust fan 4.
This fume chamber has set up two rose boxes 8, when cleaning first rose box 8, drive piston board 6 through driving piece 5.1 and remove in air guide case 5, make exhaust tube 3 can communicate the second wind channel, make the gaseous filtration in second rose box 8 of entering of extraction through the second wind channel, just make exhaust tube 3 communicate first wind channel when second rose box 8 needs to clean, make gaseous filtration in first rose box 8 of entering through first wind channel, thereby realized cleaning rose box 8 under the circumstances that explosion-proof fume chamber did not shut down, can improve scientific research experiment's efficiency.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.