DTII Belt Conveyor Parallel Comb Idler for Mining Machinery

The DTII Belt Conveyor Parallel Comb Idler is a specialized component in the DTII conveyor system, an advanced version of the TD75 standard, widely used in mining, coal, ports, and other heavy industries. These idlers feature a parallel comb-shaped design with spaced bars or teeth, typically used on the return side (underside) of the conveyor to support the empty belt.

The comb structure allows material stuck to the belt to fall through, preventing buildup, reducing belt wear, and maintaining alignment. Built for tough conditions, these idlers ensure smooth operation, minimize maintenance, and enhance conveyor efficiency. This page explains what parallel comb idlers do, where they’re used, how to install them, what users say, and answers common questions, all in plain language to help you decide if they’re right for your conveyor system.

DTII Belt Conveyor Parallel Comb Idler for Mining Machinery Dimensions:

Explanation: The fasteners connected to the intermediate frame are included in this assembly drawing.

Unit: mm

Belt width B	Roller				E	A	H1	P	Q	d	Drawing No
	D	L	Drawing No	Bearing
800	108	950	DTⅡGS2111	4G204	1142	1090	154	145	90	M12	DTⅡ03C2321
1000	133	1150	DTⅡGS3212	4G205	1342	1290	176.5	150		M16	DTⅡ04C2332
1200	159	1400	DTⅡGS4213		1592	1540	199.5				DTⅡ05C2342
1200			DTⅡGS4313	4G305							DTⅡ05C2343
			DTⅡGS4413	4G306							DTⅡ05C2344
1400		1600	DTⅡGS4314	4G305	1800	1740	209.5				DTⅡ06C2343
			DTⅡGS4414	4G306							DTⅡ06C2344

DTII Belt Conveyor Parallel Comb Idler for Mining Machinery Features:

The DTII Parallel Comb Idler is designed to support the return side of the conveyor belt while preventing material buildup, ensuring smooth operation in rugged mining environments. Here’s what it offers:

1. Self-Cleaning Comb Design

   • Features parallel bars or teeth in a comb-like structure, allowing loose material to fall through gaps, preventing buildup on the return belt.

   • Reduces belt wear and misalignment by keeping the belt clean.

2. Durable Materials

   • Comb bars made of Q235 steel (equivalent to SS400/JIS G3101/ASTM A36) for strength under tension.

   • Shafts crafted from 45# steel (equivalent to DIN C45/JIS S45C/ASTM A1045) for precision and durability.

   • Optional stainless steel or HDPE bars for enhanced corrosion resistance in harsh environments.

3. High-Quality Bearings

   • Equipped with deep groove ball bearings (6204, 6205, 6305, etc., with C3 clearance, 2RZ/2Z seals) for smooth rotation and long life.

   • Triple labyrinth seals protect against dust, dirt, and moisture, ideal for mining conditions.

4. Low Noise and Vibration

   • Precision manufacturing and balance testing ensure quiet operation and minimal vibration.

   • Reduces wear on the belt and conveyor frame, extending system lifespan.

5. Corrosion Resistance

   • Options for zinc plating, baking paint, or epoxy coatings to resist rust in environments like coastal ports.

   • Stainless steel or high-polymer coatings available for added durability in abrasive or chemical conditions.

6. Customizable Design

   • Bar diameters from 50mm to 150mm, lengths from 150mm to 3000mm, fitting belts 400mm to 2400mm wide.

   • Customizable comb spacing and frame designs to match specific conveyor layouts and material types.

7. Standards Compliance

   • Meets DTII, DTII(A), CEMA (B, C, D, E), JIS, and ISO 9001:2015 standards for quality and safety.

   • Tested for radial runout (≤0.5mm), axial displacement (≤1.2mm), and rotation resistance (≤3.5N) to ensure reliability.

DTII Belt Conveyor Parallel Comb Idler Applications:

The DTII Parallel Comb Idler is used on the return side of conveyors to support the empty belt and prevent material buildup, particularly in systems handling sticky or abrasive materials. It’s ideal for these industries:

1. Mining

   • Supports return belts in conveyors moving coal, iron ore, copper, or bauxite in underground or open-pit mines.

   • Suits systems with sticky materials, like a 5 km conveyor in Shanxi, ensuring clean belt return.

2. Metallurgy

   • Supports return belts handling raw or processed metals in smelting plants.

   • Corrosion-resistant coatings protect against abrasive or high-temperature environments.

3. Ports and Terminals

   • Supports return belts during loading/unloading of coal, grain, or aggregates.

   • Stainless steel or coated options are ideal for salty coastal environments.

4. Construction

   • Supports return belts carrying gravel, sand, or aggregates on job sites.

   • Works with mobile or fixed conveyors for versatile setups.

5. Power Plants

   • Supports return belts handling coal or ash in fuel or waste systems.

   • Built for dusty, high-load conditions.

DTII Belt Conveyor:

Purpose and Scope of Use:

DTII、DTII(A) fixed belt conveyors. Their main parameters, transmission power, and tension calculation methods adopt ISO international standards, and are widely used in various industries.
The material is transported by a single or multiple unit synthetic transportation system.
This conveyor is suitable for working in temperatures ranging from -25°C to 40°C.

Product Features:

◆ Conveying materials is below 2.5t/m3
◆ Can be divided into 500, 650, 800, 1000, 1200, 1400, 1600, 1800, 2000、2200, 2400
◆ Can be divided into：0.8, 1.0, 1.25, 1.6, 2.0, 2.5, 3.15、4.0, (4.5), 5.0, (5.6), 6.5

 

Belt  width  (mm)	0.8	1.0	1.25	1.6	2.0	2.5	3.15	4	(4.5)	5.0	(5.6)	6.5
500	69	87	108	139	174	217
650	127	159	198	254	318	397
800	198	248	310	397	496	620	781
1000	324	405	507	648	811	1014	1278	1622
1200		593	742	951	1188	1486	1872	2377	2674	2971
1400		825	1032	1321	1652	2065	2602	3304	3718	4130
1600					2186	2733	3444	4373	4920	5465	6122
1800					2795	3494	4403	5591	6291	6989	7829	9083
2000					3470	4338	5466	6941	7808	8676	9717	11277
2200							6843	8690	9776	10863	12166	14120
2400							8289	10526	11842	13158	14737	17104

Note:
1. The conveying capacity in the table is calculated based on horizontal transportation, with a dynamic stacking angle of 20° and a roller groove angle of 35°.
2. The belt speeds of 4.5m/s and 5.6m/s in the table are non-standard values and are generally not recommended for use.

Installation Guidelines:

Installing DTII Parallel Comb Idlers is straightforward with these steps:

1. Verify Specifications

   • Ensure the idler’s bar diameter, length, comb spacing, and frame design match your conveyor’s belt and return side requirements.

   • Confirm the frame can support the idler’s weight and belt tension.

2. Position the Idlers

   • Install on the return side of the conveyor, typically spaced 6-10 feet apart based on belt width and tension.

   • Use sturdy frames to secure the comb idlers parallel to the belt.

3. Align the Idlers

   • Set idlers perpendicular to the belt to ensure even support and prevent mistracking.

   • Use a laser level or string line to align the frame with adjacent idlers for consistent tracking.

4. Inspect Bearings and Seals

   • Verify bearings are lubricated with lithium soap grease and triple labyrinth seals are intact.

   • Avoid disturbing seals to maintain dust and water resistance.

5. Adjust Belt Tension

   • Set tension to keep the return belt taut without overloading the idlers. Use:
     [ T = \frac{P_p \cdot 1000}{v} ] where (T) is tension (Newtons), (P_p) is power (kilowatts), and (v) is belt speed (meters/second).

6. Test the System

   • Run the conveyor at low speed with no load to check idler performance, belt alignment, and material pass-through.

   • Adjust the frame or idler position if the belt sags or drifts.

Installation Tips

• Utilize trained technicians to ensure compliance with safety and industry standards.

• Document installation details for maintenance records.

• Contact us for expert setup assistance.

Maintenance Tips

Regular care keeps DTII Parallel Comb Idlers performing well:

• Inspect Regularly: Check comb bars, bearings, and frames every 3-6 months for wear or damage.

• Lubricate Bearings: Apply lithium soap grease every 6 months to ensure smooth rotation.

• Clean Comb Gaps: Remove any lodged material from comb gaps to maintain self-cleaning function.

• Check Alignment: Verify idlers remain perpendicular to prevent belt drift.

• Use OEM Parts: Replace with DTII-compliant parts to maintain performance.

• Avoid Damage: Do not strike the comb bars with heavy objects to prevent damage to bearings or seals.

Customer Feedback:

Here’s what users of DTII Parallel Comb Idlers say:

1. Australian Iron Ore Mine

   “The self-cleaning design is a game-changer for sticky ore. Our belts last longer, and maintenance is easier.” – Jack Thompson, Site Engineer

2. South African Port Terminal

   “The corrosion-resistant coatings hold up great by the coast. These idlers need almost no attention.” – Nomvula Sithole, Logistics Manager

3. Peruvian Copper Mine

   “Our conveyor’s uptime is up 25% thanks to these idlers. They’re reliable and keep the belt clean.” – Maria Gomez, Maintenance Supervisor

These testimonials show Ever-Power delivers dependable idlers that customers trust.

Related Questions (FAQs):

Got questions? Here are clear answers with keywords to help you find us:

1. What’s a DTII Parallel Comb Idler?

A comb-shaped roller set that supports the return belt in mining conveyors, with gaps to prevent material buildup and reduce belt wear.

2. How does it prevent buildup?

Parallel bars in a comb design allow loose material to fall through, keeping the belt clean and aligned.

3. What’s it made of?

Q235 steel for comb bars, 45# steel for shafts, with optional stainless steel, HDPE, or rubber coatings for durability.

4. How often should I maintain it?

Inspect every 3-6 months, lubricate bearings, clean comb gaps, and check alignment. Don’t tamper with seals.

5. Where’s it used?

Mining, metallurgy, ports, construction, and power plants for handling sticky or abrasive materials like coal or ore.

6. How does it improve my conveyor?

It prevents buildup, reduces belt wear, and cuts maintenance for better efficiency and safety.