Common Construction Waste Chute Faults and Troubleshooting

Construction waste chutes may encounter various faults during use; timely and correct troubleshooting ensures normal operation. This article summarizes common faults and troubleshooting methods.

1. Chute Blockage

Fault symptom: Waste does not descend after being discharged, or stops midway.

Cause:

Oversized waste was discharged

Buffer section angle too small

Dried mortar-type waste blocks the chute

Elbow direction incorrect

Construction waste agglomerates inside the chute

Troubleshooting method:

Open from the nearest inspection opening

Clear with a long rod (wooden stick)

Remove the blockage from the bottom inspection opening

In severe cases, remove the buffer section for cleaning

Flush mortar blockage with water

Prevention:

Install a grid at the feed inlet

Do not discharge oversized waste

Flush regularly

Install buffer sections properly

1. Joint Dust Leakage

Fault symptom: Dust or mortar leaks from the joints.

Cause:

Sealing ring dislodged or damaged

Buckles not tightened

Foreign matter in the joint

Sealing ring aged

Troubleshooting method:

Disassemble the joint

Remove foreign matter

Replace or reinstall the sealing ring

Tighten the buckles

III. Chute Vibration

Fault symptom: The chute vibrates noticeably during waste discharge.

Cause:

Fixing point spacing too large

Clamps loose

Anchors loose

Wind load at high elevation

Troubleshooting method:

Tighten clamps and anchors

Add fixing points (reduce spacing from 4 m to 3 m)

Install guy ropes

Stop use in strong wind

1. Chute Rupture

Fault symptom: Cracks or holes appear in the wall.

Cause:

Excessive impact (large blocks falling at high speed)

Insufficient buffer sections

Wall worn thin

Low-temperature brittle fracture

Aging

Troubleshooting method:

Stop use

Remove the ruptured section

Install a new section

Investigate the cause of rupture

Adjust operation (reduce large blocks, add buffering)

1. Feed Inlet Door Damage

Fault symptom: The door does not close tightly or is hard to open/close.

Cause:

Hinge damaged

Sealing strip dislodged

Door deformed

Latch damaged

Troubleshooting method:

Replace hinge

Replace sealing strip

Realign or replace the door

Replace latch

1. Buffer Section Wear

Fault symptom: Buffer section wall thins or pits appear.

Cause:

Long-term impact wear

Impact concentrated at buffer section location

Large block impact

Troubleshooting method:

Inspect the degree of wear

Replace when wear exceeds 30% of wall thickness

Add a wear-resistant liner to extend life

Replace wear sections regularly

VII. Abnormal Noise

Fault symptom: Noise during waste discharge is much louder than usual.

Cause:

Buffer section failed

Chute damaged

Fixing points loose (resonance)

Metal waste discharged

Troubleshooting method:

Inspect buffer section

Inspect chute damage

Tighten fixing points

It is strictly prohibited to discharge metal waste

VIII. Poor Discharge

Fault symptom: Waste at the bottom is not discharged or discharges very slowly.

Cause:

Bottom blockage

Discharge outlet angle incorrect

Collection hopper overfull

Buffer section direction incorrect

Troubleshooting method:

Clear bottom blockage

Adjust discharge direction

Empty the collection hopper

Inspect buffer section

1. Emergency Fault Handling

Stop use immediately upon finding a fault

Set up warning signs

Notify maintenance personnel

Inspect and accept after troubleshooting

Record fault cause and treatment

1. Longkang Technical Support

Provide troubleshooting guide

Telephone/video guidance

Fast supply of wear parts

On-site service for severe faults

Lifetime technical support