GB2204677A

GB2204677A - Air streamer work unit

Info

Publication number: GB2204677A
Application number: GB08623322A
Authority: GB
Inventors: W J Smith; Roy Goodhew
Original assignee: W J SMITH
Current assignee: W J SMITH
Priority date: 1986-09-27
Filing date: 1986-09-27
Publication date: 1988-11-16
Anticipated expiration: 2006-09-27
Also published as: GB2204677B; GB8623322D0

Abstract

A demountable enclosure is provided in which asbestos related materials or other dusty works can be safely removed from ceilings, walls, or floors, without external contamination. The demountable enclosure can be raised by means of adjustable legs on four corners, each leg adapted to include castor type wheels for ease of mobility and extension of the work areas. Attached to one end of the enclosure is mounted an extract fan unit the duty of which will maintain an air stream effect across the area to be worked. A suitable filter system forms an integral part of the fan unit to ensure adequate filtration from the enclosure. Within the enclosure is mounted a shower rose and shower base to enable the internal dust concentration to be kept to minimal - a shower waste connection with filter and a water connection for the shower rose penetrate through the skin of the enclosure. A specific filter assembly is located between the fan unit and the main enclosure of which the filter units are withdrawable from within the enclosure for replacement. Whilst withdrawal of filters are in progress a special sized filter pack is inserted to protect external areas from contamination. The filter assembly is monitored from "clogging up" by means of a manometer alarm unit positioned to determine high differential air pressures. An adaption for working on smaller areas is disclosed. <IMAGE>

Description

AIR STREAMER WORK UNIT This invention relates to a demountable enclosure in which asbestos related materials or other dusty works can be safely removed from ceilings, walls, or floors, without external contamination.

Asbestos related materials and other dusty works are known to be hazardous when being removed from within buildings - at present complete areas need to be covered or protected from contamination whilst asbestos /dusty related works are carried out in small areas - the costs of removing the asbestos or dusty materials is therefore very high.

According to the present invention there is provided a demountable enclosure which can be raised by means of adjustable legs on four corners, each leg adapted to include castor type wheels for ease of mobility and extension of the work areas.

Attached to one end of the enclosure will be mounted an extract fan unit the duty of which will maintain an air stream effect across the area to be worked. A suitable filter system will form an integral part of the fan unit to ensure adequate filtration from the enclosure.

A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows the complete unit erected.

Figure 2 shows the adaption for minor area works.

Referring to the drawing the enclosure comprices a castor type wheeled enclosure which is assembled by bolting/catch or similar means to corners and base (not shown) with a sliding door used as access for operatives and window to induce light.

Within the enclosure is mounted a shower rose and shower base to enable the internal dust concentration to be kept to minimal - a shower waste connection with filter and a water connection for the shower rose penetrate through the skin of the enclosure.

The castor wheel supports are adjustable in height by means of bolting/ catch or similar means to enable correct working heights to be achieved.

Referring to the drawing the fan unit comprises a specially sized fan unit mounted on a demountable framework with anti vibration units, flexible duct connection, motor, pulley, belts, guards and electrical starter equipment which is connected to the main enclosure by means of purpose made ductwork.

The castor wheel supports of the fan unit are adjustable in height as per the main enclosure.

A specific filter assembly is located between the fan unit and the main enclosure of which the filter units are withdrawable from within the enclosur for replacement. Whilst withdrawal of filters are in progress a special sized filter pack is inserted to protect external areas from contamination.

The filter assembly is monitored for "clogging up" by means of a monometer alarm unit positioned to determin high differencial air pressures.

Referring to the drawing the adaption which can be made to enable smaller areas of works to be carried out is described as follows: A perspex enclosure which is fitted with heavy gauge polythene glovelets suitably sealed to the enclosure and having a specific filter assembly (dependant on type of material being worked). The filter assembly being connected to the main air streamer work unit by means of flexible ductwork and connecting spigot, and a heavy gauge waste products polythene bag being located within a wire framework suitably attached to the enclosure is placed over the work area the fan unit is then activated and the unit is then tested to ensure an air stream is maintained - works for removing or working on asbestos or dusty area can then take place without fear of contamination.

Claims

1. A demountable box enclosure comprising an adjustable mobile castor wheel framework with means of securing an adjustable mobile castor wheel fan and filter unit.

2. A demountable box enclosure as claimed in claim 1 wherein shower facilities are provided to enable dust concentrations to be kept to a minimum.

3. A demountable box enclosure as claimed in claim 1 and claim 2 wherin withdrawal of filter units can be carried out within the enclosure.

4. A demountable box enclosure as claimed in claim 1, claim 2, and claim 3, wherein window and sliding door facilities are included for operatives comfort.

5. A demountable box enclosure as claimed in claim 1, claim 2, claim 3, and claim 4, wherein a monometer alarm unit is provided to monitor pressure levels.

6. A demountable box enclosure as claimed in Claim 1, claim 2, claim 3, claim 4, and claim 5, wherein an attachment for work ing within small areas as substantially described herein with reference to figure 2 of the accompanying drawing.

7. A demountable box enclosure as claimed in claim 1, claim 2, claim 3, claim 4, claim 5, and claim 6, substantially as described herein with reference to figures 1 & 2 of the accomp anying drawings.

8. A demountable box enclosure which is used to work on hazardous material and dusty working areas using the principle of inducing air at a suitable velocity across the perimeter of the working area on a creeping forward basis (to work continuously on larger areas than the enclosure), all as substantially described herein with reference to figures 1 & 2 of the accomp anying drawings.

9. A demountable box enclosure as claimed in any previous claim wherein the principle of working on hazardous or dusty condit ions is that of working within the nozzle of a suitably filtered high air extract tube or enclosure.