►Introduction
Garbage and
Linen Chutes
QDCHUTE chutes are very convenient, simple and low cost method of controlling and disposing of refuse and linen in multi-storey buildings.
Our chutes meet the most stringent requirements of environmental health and safety.
The components of chute has interlocking system, cleaning system, sanitizing and disinfecting units, sound dampening and fire control equipment. Within the overall design of chutes have greatly increased their usage throughout the world.
This catalogue is designed to be helpful to engineers and contractors in the application and selection of chutes products for construction and maintenance. If a unique application requires a special product not included in this catalogue,
►Material Specifications
Material Thickness & Gauges
QDCHUTE provides the following material gauges:
•1.2mm (18 Gauge)
•1.5mm (16 Gauge)
•2.0mm (14 Gauge)
•3.0mm (11 Gauge) (when specified).
Usage of 1.5 mm thickness material is recommended for your buildings. And this thickness takes into account both cost and performance
Material Choice
We provides garbage and linen chutes to customer requirements from the following high quality materials:
Material 1.2 mm 1.5 mm 1.8 mm 2.0 mm
Stainless Steel 304 ● ● ● ●
Stainless Steel 316 ● ● ● ●
Useful Weights
Material Kg/m3
Cardboard stacked flat or baled, folded newspaper 500
Food Waste, well compacted 600
Vegetable waste, uncompacted 200
Empty Bottles 300
Mixed general refuse, similar to domestic 150
General office waste and paper 50
Waste paper loose in sacks 20
Material Specification & Choice
We strongly recommends the use of stainless steel for the manufacture of garbage chutes. Stainless steel has the advantage of being resistant to the humidity, acid and alkalis contained within refuse. Stainless steel has no applied coating to wear off and most important has very high impact strength. We can also manufacture chutes in aluminum though, due to the softness of the material, we would only recommend its use where low weight is a key factor.
Garbage Chute Sizes
Our chutes are available with the following standard internal diameters:
18”=450mm 20”=500mm 24”=600mm 28”=700mm 30”=750mm 36”=900mm
We will also manufacture per customer’s drawings and customers special requirements. We can provide offset chute section according to customer's request.
Shape
To give an unimpeded free flow of refuse within a chute, the best shape has proved to be circular, therefore have a circular cross section. We will make square section chutes per special requirements.
Chute Section
Cut to shape from flat metal sheet, mechanical rolled into an accurate cylindrical. Vertical seams are according to material type and gauge either lock seamed or welded, to give smooth, watertight sealed joints. The entire inner surface area is smooth and free from any projections that will impede the free flow of refuse within the total vertical length of the chute.
Intake Chute Section
This could be described as the most critical component of a refuse chute.
If it is not designed and manufactured correctly, there is a probability the garbage chute will not work satisfactorily.
Flat metal sheet is accurately cut and shaped by highly skilled craftsmen, vertical seams being welded or lock seamed, horizontal are mechanically jointed or welded. QDCHUTE intake chute sections have our specially designed Inner baffle, to prevent air or falling refuse already present in the chute from accidentally blowing back when any door is opened.
Intake Door
Bottom Hinged or Left Hinged or Right
Hinged
Hand-operated, self-closing, positive latching
Door bears a UL Label with a clear listing of 1-1/2 hour, 30 minute - 250 degree max temperature rise.
Handle can be T-handle, L-handle
(ADA compliant), pull handle, thumb trigger style latch.
The whole door panel and the frame are made with 16 gauge type 304 stainless steel. All the parts can be completely disassembled while mounted in the wall allowing every part to be cleaned, serviced or replaced with ease. Stainless Steel Frame is available blank or embossed with "Rubbish", "Soiled Linen", or "Recycle".
Other accessories available include steel baffle or rubber baffle, electrical interlocks, key locks and more. Can be retrofitted to others chutes with sheet metal adaptors and wall modifications to fit chute door openings for doors of the same size. Complies with building codes, NFPA-82 and ASTM standards.
Hopper doors are made from stainless steel. Chute hopper doors are available in different sizes but commonly used ones are:
Support Frame
Cut, shaped and drilled from 38mmx38mmx3~5mm mild steel angle with a rigid, welded construction. Also MS Channel is available per customer’s request. The frame is hot dip galvanized for internal use and external use.
V-Clamp Joints
Used to join certain chute section. SUS304 Material, rustproofed. The factory flanged the chute section. V-shape can make the upper and lower chute section fixed together firmly, to ensure chute stability.
Slip Joints
Mechanically swaged into chute section, the slip joint gives up to 75mm tolerance. These joints are sealed during field erection with factory supplied sealant.
Intake Door Size
Chute Dia.
Trash Chute Linen Chute
Bottom Hinged Doors Width*Height
Side Hinged Doors Width*Height 18"(450mm) 12"*15"(305mm*381mm) 15"*15"(381mm*381mm) 20"(500mm) 12"*15"(305mm*381mm) 18"*18"(457mm*457mm) 24"(600MM) 15"*18"(381mm*457mm) 21"*21"(533mm*533mm) 28"(700mm) 18"*18"(457mm*457mm) 24"*24"(610mm*610mm) 30"(750mm) 21"*18"(533mm*457mm) 24"*24"(610mm*610mm) 36"(900mm) 24"*24"(610mm*610mm) 24"*24"(610mm*610mm)
Available Door sizes
12"*15"(305mm*381mm) 12"*12"(305mm*305mm)
15"*18"(381mm*457mm) 15"*15"(381mm*381mm)
18"*18"(457mm*457mm) 18"*18"(457mm*457mm)
21"*18"(533mm*457mm) 21"*21"(533mm*533mm)
Vents & Fans
Automatic Foul Air Exhaust Fan
Installed at the top of the chutes, usually above roof level. This ventilator maintains a smooth flow of fresh air within the garbage chute.
Normally changing the air approximately 50 times per hour. The foul air exhaust fan helps prevent the escape of any bad odors or explosive gases released by aerosols etc. through intake door or into the refuse room. For use with vent pipes of (10”) 250 mm diameter or full diameter.
Technical Specification
Air displacement 200m3/hour. Fan motor, Class H tropicalized continuously rated, 1300 RPM.
Electric Supply:
220/240 volts or 110/120 volts, 50/60 Hz.
Full Diameter with Insect Screen
Recommended on chutes if a foul air exhaust fan is not being specified. The full diameter of the Garbage chute is used to vent any foul air in the chute. The screen keeps out any insects or birds attracted to the vent pipe.
An exhaust fan can be fitted to any full diameter vent pipe, complete with inspection door. It extends 4 feet (1.2m) above roof.
Automatic Fire Sprinkler
Automatic Fire Sprinkler
Glass bulb sprinklers are recommended for fire protection inside the chute.
Minimum requirement would be one sprinkler at the head of the chute in each chute.
Pertinent international standard require this sprinkler to be incorporated in every second chute intake opening.
Sprinkler: 1/2” IPS, 68°C (165°F).
Glass Sprinklers can be used in conjunction with a normal water supply at a pressure of up to 8 bar.
Smoke Detection System:
We can provide Smoke Detector for the customers, Also We can also drill the installation hole, according to customer requirements, in the corresponding location. Also can be provided by the fire alarm subcontractor.
Discharge Doors
Type ’A’ Rolling Discharge Door Assembly
Horizontal, rolling, open end trash chute or linen chute discharge door. Door is equipped with a 165 degree fusible link designed to melt when the ambient temperature of a fire reaches 165 degrees. This action closes the door to stop fire from traveling up the chute into the building. Door rolls shut on an inclined track. Fusible link, pendant wire, wheels, and door panel are replaceable. The door panel is made of #16 gauge SS steel with a #16 gauge frame. This discharge door is available for square or round
chutes in the standard sizes of 18” to 36”. Door has an all welded door and frame with a collar to fit an 18”to 36” round chute.
Discharge door is not designed to be used to shut off the chute.
Type ’H’ Top Hinged Automatic Fire Door Type
Type "H" hopper discharge assembly with top hinged, counter balanced, fire rated, vertical discharge door. The hopper provides a 90 degree radius sweep at the bottom of the chute. Made to fit a 18” to 36” diameter or square chute. This hopper is made of #16ga SS steel all welded hopper assembly with #13ga heavy duty steel bottom for longer life. Includes 2” drain flange and angle iron structural support stand (compare to balancing on a 2” pipe). The standard
structural support stand height is 48". Bottom of hopper is set at 4’-0” above the floor. If a higher stand is required, please contact us to add inches onto this doors stand. Standard throat length (distance of door face from the edge of the
round chute flange) is 8". If a longer throat is required, please contact us to add inches onto this doors throat.
Door face is stainless steel whole. Door is mounted in a prime painted angle iron frame with a stainless steel piano hinge. Door includes a night or slam latch on each side and a lever latch at the bottom for manual closing during wash-down. The door is provided with a counterbalance spring assembly having a 165 degree fusible link which allows the door to drop and slam closed in case of a fire.
Chute discharge doors are not designed to be used to shut off the chute.
A direct replacement for any manufacturers’ vertical discharges. Can be retrofit to custom chutes. Complies with all building and life safety codes.
Offsets Chute Sections
We fabricated from the same material as the garbage chute, but in a heavier gauge to withstand the impact of falling bags. Offsets should not be less than 45° from the horizontal. Usually should be 15°, 30°, 45° per customer request and building structure. Offsets are fabricated to all diameters of refuse and linen chutes provided by us.
Offset is made of #12 gauge SS steel (2.6-3.0mm). With two support hanger clips on top and two at the bottom for
connection to hanger supports available as an accessory. This offset have discharge mounting clips.
Offsets made per dimensions shown but may be ordered at longer lengths and configurations using our custom option. When ordering, specify 15 degree, 30 degree, 45 degree, or custom degree miter.
Sound Dampening
Introduction
All metal garbage chutes can produce, in certain circumstances,
uncomfortable levels of noise. A factory applied coating of a proven sound dampening compound will dramatically reduce noise level produced by resonant vibrations in metal garbage chutes. This coating material is fire rated Class B.
Application
Factory applied at the same thickness as the metal substrate or more and over the total area of the exterior surface of the refuse chute.
Interlocking System
Introduction
Interlocking systems are used to enhance the safety of garbage and linen disposal chute systems; although not required by law, they considerably improve and ensure proper operation of intake doors.
Application
Electric latches can be incorporated in bottom-hinged and side-bottom-hinged door; they can be coupled to warning light indicators, signal light Indicators, smoke and fire alarms so that the doors remain closed in an emergency situation. Coupled with timers they can be used
to control and dictate operating hours of the chute system. Door control is made at the central switchboard so that when one door is open, all others remain closed.
This arrangement prevents injury to operating personnel by a falling bag should the chute be used simultaneously at two different levels in disposal, for instance.
Design
Interlocking systems are fitted under the filler frame on tipping hopper and bag intake doors. In the door leaf, a falling latch is incorporated which can be opened in an emergency by a simple key. The lock is
operated via a green illuminated pushbutton; a red indicator lamp signaling that the chute has no access. All components of a door locking system and the operating controls are connected during installation and the final connection to the power unit is done by the main contractor.
Operating instructions
All doors shall be locked when the chute cleaning systems are in operation.
Doors can only be opened individually, a feedback contact preventing opening of other doors; an indicator lamp on the switchboard indicates that a door is open.
When all doors are locked it may be that the smoke detectors or fire alarms have been triggered.
When work is going on in the collection room, personnel safety should be ensured by closing all doors to the system via the switchboard.
Supply requirements & specification
- 220/240 volts. 50/60 Hz. 10 Amps max. Or 120/240 volts. 50/60 Hz 5 Amps max. Low power factor
Pre-set timer. Electric supply as above Delay on/off. Range 5/200 seconds.
►Linen Chutes
Technical Information
Introduction
QDCHUTE Linen chutes are the most efficient method of quickly and
economically disposing of soiled linen in multi-storey buildings.
The dirty linen is usually bagged before loading into the chute. Side hinged doors with large openings are therefore the normal standard on linen chutes. Hospitals generate about 3.0 Kgs of soiled linen per bed per day and a similar figure can be used for hotels. The increasing cost of using lifts and maintaining labor in hotels and
hospitals reinforces the decision to install a linen chute.
Application
Original equipment installed in hospitals and hotels for the vertical movement of loose and bagged soiled linen.
Technical Information
Our linen or laundry chutes have the same basic specification as refuse chutes. For details on the construction, material
specification and choice please see previous
pages. A full specification for our linen chutes can be found in this section.
Linen Chute Sizes
Available in either 610mm or 760mm diameters though in practice the 610mm diameter is adequate for most purposes.
Linen Chute Doors
QDCHUTE normally recommends the use of a 533 x 533mm door for use with linen chutes and would also recommend the use of electric interlocks. Linen chute doors are side hinged on stainless steel hinges, with either separate or master keyed locks. The doors are fully self-closing on an efficient hydraulic self-closer. Labels can be attached bearing the message ’LINEN ONLY’ in English and/or the local language.
Fire Safety
An automatic fusible linked fire shutter door with a 1 1/2 hour fire rating should be fitted to the bottom of the linen chute, in the linen collection room. Fire sprinklers are also recommended to be fitted at every second floor. The sprinklers are fitted inside the chute entry section and do not interfere with the loading or fall of the soiled linen.
Electric Interlocks
To give increased operator safety we strongly recommend the use of ’time delay’ interlocks inside hung door linen chutes.
Accessories
The majority of accessories are available with linen chutes as are deceleration tracks, trolleys and containers for carrying bagged or loose linen-the range can be seen in the containers section.
