Installation of the Bottom Discharge Outlet for Construction Waste Chutes

The bottom discharge outlet is the exit through which waste leaves the chute and enters the collection point; its design directly affects dust control and removal efficiency. This article details the bottom discharge outlet installation.

1. Discharge Outlet Types
2. Direct Drop

• Chute runs vertically downward
• Waste falls directly into the collection hopper
• Simplest
• Relatively high dust

2. Turn Discharge

• After 90° turn
• Discharges horizontally into the collection hopper
• Low dust
• Most commonly used

3. Enclosed Discharge

• Discharge outlet connects to an enclosed collection hopper
• With dust extraction connection
• Minimum dust
• Used when environmental requirements are high

1. Collection Methods
2. Dump Truck

• Dump truck or cart positioned under the discharge outlet
• Remove when full
• Suitable for small projects

2. Collection Hopper

• Large-capacity hopper on the ground
• Crane removes hopper when full
• Suitable for large projects

3. Waste Removal Truck

• Directly connect to a waste removal truck
• Depart when full
• Highest efficiency

III. Discharge Outlet Height

• Discharge outlet distance from hopper bottom: ≤500 mm
• Reduce splash during falling
• Too high causes high dust
• Too low makes loading inconvenient

1. Bottom Buffering
2. Buffer Section

• Last 2–3 sections set as 45° turn buffers
• Reduce discharge speed
• Reduce bottom impact

2. Buffering Hopper

• Baffle plate inside hopper
• Waste first lands on the baffle plate
• Then slides into the hopper
• Reduce impact and dust

3. Water Seal (Optional)

• Water retained at hopper bottom
• Waste falls into water
• Thorough dust removal
• Take care to prevent water pollution

1. Enclosed Dust Removal
2. Enclosure Hood

• Provide enclosure hood over discharge outlet + hopper
• Prevent dust dispersion
• Dust extraction opening inside hood

2. Dust Extraction Connection

• DN100 dust extraction opening at discharge outlet
• Connect to negative-pressure dust collector
• Extract dusty air
• Discharge after filtration

3. Spray Dust Suppression

• Spray nozzle at discharge outlet
• Spray water mist to moisten waste
• Reduce dust
• Used in dry seasons

1. Bottom Safety
2. Protective Canopy

• Provide protective canopy above discharge outlet
• Prevent injury from falling objects
• Strong canopy roof

2. Warning Zone

• Set up warning zone 5 m around discharge outlet
• Non-personnel must not enter
• Provide warning signs

3. Personnel Safety

• Personnel stand on the side during loading
• Must not stand directly below the discharge outlet
• Wear hard hat

VII. Bottom Inspection Opening

• Provide an inspection section at the bottom
• Clear blockage from the bottom
• Close feed-in during clearing
• Remove blockage through the inspection opening

VIII. Longkang Discharge Outlet Products

1. 90° turn discharge section
2. Enclosed discharge hood
3. Dust extraction connection
4. Buffering hopper design
5. Spray dust suppression connection