Apparatus for Dust Removal by Air Curtain Isolation and Self-Circulation Purification

Abstract

A device for dust removal through air curtain isolation and self-circulation purification, including a material input transferring cabin, a main isolation cabin, a material output transferring cabin and a control cabinet. By employing three independent interlayer isolation cabins, a self-circulation purification device formed of self-circulation air pipes is disposed in the main isolation cabin, and an airflow cleaning air curtain is respectively disposed between the main isolation cabin and the material input transferring cabin and also between the main isolation cabin and the material output transferring cabin. By means of air curtain isolation and self-circulation purification, the spreading of dust resulting in pollution and interference to the environment of both the processing area and the whole clean area can be avoided, which facilitates the cleanness of the pharmaceutical processing environment to meet the standard requirements in the Chinese GMP Version 2010.

1 . A device, for dust removal through air curtain isolation and self-circulation purification, comprising:
 a material input transferring cabin;   a main isolation cabin, having a front wall, a back wall, a left wall, and a right wall, for placing and isolating a processing equipment which is placed inside the main isolation cabin, each wall has a top and a bottom, the main isolation cabin being connected to the material input transferring cabin through a material inlet that is formed on a wall between the main input transferring cabin and the main isolation cabin;   a material output transferring cabin connected to the main isolation cabin through a material outlet that is formed on a wall between the main isolation cabin and the material output transferring cabin; and   a control cabinet containing an automatic control device for adjusting, displaying, and recording air volume, pressure differential, and a number of suspended particles in the main isolation cabin, the material input transferring cabin, and the material output transferring cabin;   wherein,   the main isolation cabin is a sealed cabin surrounded by walls, the material input transferring cabin and the material output transferring cabin are respectively disposed on left side and right side of the main isolation cabin, a material input hole is formed on a left wall of the material input transferring cabin, a material output hole is formed on a right wall of the material output transferring cabin;   a first laminar flow filtering hood, a second laminar flow filtering hood and a third laminar flow filtering hood connect to and seal respectively a top of the main isolation cabin, a top of the material input transferring cabin, and a top of the material output transferring cabin, the first laminar flow filtering hood has an air supply surface,   a first air inlet is formed on a sidewall of the second laminar flow filtering hood and a second air inlet is formed on a sidewall of the third laminar flow filtering hood, a first air passage is formed between a bottom of the material input transferring cabin and the ground, a second air passage is formed between a bottom of the material output transferring cabin and the ground;   a self-circulation air pipe with a lower end and an upper end is vertically attached to the front wall of the main isolation cabin, a waste container with an open top and a lower interface is placed inside the main isolation cabin below the processing equipment, the lower interface of the waste container enables the main isolation cabin to communicate with the lower end of the self-circulation air pipe;   a plurality of filters and a fan are placed inside the self circulation air pipe, the upper end of the self-circulation air pipe connects to the first laminar flow filtering hood, and the lower end of the self-circulation air pipe connects to the lower interface of the waste container;   an inlet reduction spreader plate with a top portion and a lower portion and an outlet reduction spreader plate with a top portion are installed inside the main isolation cabin in parallel with left and right walls of the main isolation cabin respectively, a first gap interlayer is placed between the inlet reduction spreader plate and the left wall of the main isolation cabin forming an inlet spreader air curtain passage, a second gap interlayer is placed between the outlet reduction spreader plate and the right wall of the main isolation cabin forming an outlet spreader air curtain passage, the top portions of the inlet reduction spreader plate and the outlet reduction spreader plate are close to the air supply surface of the laminar flow filtering hood, the lower portions of the inlet reduction spreader plate and the outlet reduction spreader plate are respectively provided with a reduction plate inlet and a reduction plate outlet at positions corresponding to the material inlet and the material outlet.   
     
     
         2 . The device for dust removal of  claim 1 , wherein each wall of the main isolation cabin has a bottom and a plastic plate sealing off the bottom of the four walls to isolate the main isolation cabin from the ground, and, the air passages are formed between the lower portions of the walls of the material input transferring cabin and the material output transferring cabin, excepting the wall adjacent to the main isolation cabin, and the ground. 
     
     
         3 . The device for dust removal of  claim 1 , wherein the filters in the self-circulation air pipe comprise a plug-board coarse-efficiency filter and a plug-board medium-efficiency filter. 
     
     
         4 . The device for dust removal of  claim 1 , wherein the waste container has a funnel shape and a lower portion for collecting dust of large particles. 
     
     
         5 . The device for dust removal of  claim 1 , wherein a sealed door and a glove box are disposed on the back wall of the main isolation cabin. 
     
     
         6 . The device for dust removal of  claim 1 , wherein the top of each of the front wall, back wall, left wall, and right wall of the main isolation cabin are sealingly attached to the first laminar flow filtering hood, and only the bottom of the front wall and back wall of the main isolation cabin are sealingly attached to a workbench. 
     
     
         7 . The device for dust removal of  claim 1 , wherein edges of the inlet reduction spreader plate and the outlet reduction spreader plate are respectively sealingly attached to the front wall and back wall of the main isolation cabin. 
     
     
         8 . The device for dust removal of  claim 1 , wherein all the walls are made from transparent glass or transparent organic glass sheets, and the edge of each wall comprises a metal frame. 
     
     
         9 . A device, for dust removal through air curtain isolation and self-circulation purification, comprising a material input transferring cabin with a bottom, a main isolation cabin, with a center, a front wall, a back wall, a left wall, and a right wall, each wall has a top and a bottom, attached to the material input transferring cabin and containing an processing equipment, a material output transferring cabin, with a bottom, attached to the main isolation cabin, and a control cabinet attached to the material output transferring cabin;
 wherein the main isolation cabin is a sealed cabin surrounded by walls, the material input transferring cabin and the material output transferring cabin are respectively disposed on left side and right side of the main isolation cabin, a material input hole is formed on a left wall of the material input transferring cabin, a material output hole is formed on a right wall of the material output transferring cabin, a material inlet is formed on a wall between the main isolation cabin and the material input transferring cabin and enables communication between the main isolation cabin and the material input transferring cabin, and a material outlet is formed on a wall between the main isolation cabin and the material output transferring cabin and enables communication between the main isolation cabin and the material output transferring cabin;   the control cabinet is an automatic control device for adjusting, displaying, and recording air volume, pressure difference and a number of suspended particles in the main isolation cabin, the material input transferring cabin, and the material output transferring cabin;   a first laminar flow filtering hood, a second high-efficiency laminar flow filtering hood and a third high-efficiency laminar flow filtering hood are respectively sealingly attached to top of the main isolation cabin, the material input transferring cabin and the material output transferring cabin, an air inlet is formed on each of the second filtering laminar high-efficiency flow hood and the third high-efficiency laminar flow filtering hood, and a first air passage is formed between the bottom of the material input transferring cabin and the ground, a second air passage is formed between the bottom of the material output transferring cabin and the ground;   the processing equipment is disposed in the center of the main isolation cabin, a self-circulation air pipe, with a middle, a lower end, and an upper end, is vertically attached to the front wall of the main isolation cabin, a waste container with a top opening is disposed inside the main isolation cabin and below the processing equipment, the waste container is provided with a lower interface facing the front wall of the main isolation cabin and allowing communication with a lower end of the self-circulation air pipe;   the self-circulation air pipe is provided with a plurality of filters and a fan placed respectively at the middle and the upper end of the self-circulation air pipe, the self-circulation air pipe communicates with the first high-efficiency laminar flow filtering hood, and the lower end of the self-circulation air pipe is in communication with the lower interface of the waste container;   an inlet reduction spreader plate and an outlet reduction spreader plate are disposed inside the main isolation cabin in parallel, respectively, with the left wall and the right wall of the main isolation cabin, a first gap interlayer is formed between the inlet reduction spreader plate and the left wall of the main isolation cabin and a second gap interlayer is formed between the outlet reduction spreader plate and the right wall of the main isolation cabin, the first gap interlayer and the second gap interlayer form an inlet spreader air curtain passage and an outlet spreader air curtain passage, top portions of the inlet reduction spreader plate and the outlet reduction spreader plate are adjacent to an air supply surface on the high-efficiency laminar flow filtering hood, and lower portions of the inlet reduction spreader plate and the outlet reduction spreader plate are respectively provided with a reduction plate inlet and a reduction plate outlet at positions corresponding to the material inlet and the material outlet;   the main isolation cabin has four walls, each wall has a bottom, and a plastic plate sealing off the bottoms of the four walls to isolate the main isolation cabin from the ground, and the air passages are formed between the lower portions of the walls of the material input transferring cabin and the material output transferring cabin, excepting the wall adjacent to the main isolation cabin, and the ground;   the filters in the self-circulation air pipe comprise a plug-board coarse-efficiency filter and a plug-board medium-efficiency filter;   the waste container has a funnel shape and a caisson shape lower portion for collecting dust of large particles;   a sealed door and a glove box are disposed on the back wall of the main isolation cabin;   the top of each wall of the main isolation cabin is sealing attached to the first high-efficiency laminar flow filtering hood, and the bottoms of the front wall and back wall of the main isolation cabin are sealing attached to a workbench;   edges of the inlet reduction spreader plate and the outlet reduction spreader plate are respectively sealing attached to the front wall and back wall of the main isolation cabin;   all the walls are made from transparent glass or transparent organic glass sheets, and the edge of each wall comprises a metal frame.