The TH bucket elevator is suitable for vertical conveying of non-abrasive or low-abrasive materials in the form of powders, granules, and small pieces. The TH chain bucket elevator is a circular chain bucket elevator that utilizes a combination of gravity or mixed unloading and scoop loading. It is suitable for conveying easily scooped, low-abrasive materials in the form of powders, granules, and small pieces with a bulk density less than 1.5t/m³ and a temperature below 250°C. Examples include coal, cement, gravel, sand, fertilizer, and grain.
The TH bucket elevator features a round-link chain with mixed or gravity unloading and digging-type loading. Unlike the TD belt, the TH offers a larger lifting capacity and faster operation. It is commonly used for lifting materials with higher specific gravity. The traction element utilizes alloy steel high-strength round-link chain. The central housing is available in single- and dual-channel configurations, providing constant force and automatic tensioning via an internal weight box. The sprockets utilize a combined design with replaceable rims, ensuring a long service life and easy rim replacement. The lower section utilizes an automatic gravity tensioner to maintain constant tension, preventing slippage or chain derailment. It also provides tolerance for accidental hopper jams, protecting the lower shaft and other components.
TH type has two types of hoppers:
TH type – ZH type (medium-deep bucket) is generally used to transport wet, agglomerated, and difficult-to-dispose materials, such as wet sand, molding sand, fertilizer, alkali powder, etc.
TH type – SH type (deep bucket) is generally used to transport dry, loose and easy-to-throw materials, such as cement, gravel, coal, etc.
Main features of TH type chain bucket elevator:
1. Easy maintenance, long service life and strong structural rigidity;
2. The temperature of the conveyed material can reach up to 250℃, the lifting height is stable, the noise is low and the maintenance is easy;
3. The intermediate section has two types: single-channel and double-channel. The lifting and conveying capacity of the improved model is more than 30% higher than that of the ordinary model.
4. The hoist chain is made of forged alloy steel and is carburized and quenched, with high tensile strength and performance.
TH type bucket elevator is mainly composed of drive device, casing, chain, hopper, maintenance platform, etc. Its main structural features are
Sealing devices are installed between the shells and between the inspection door and the shell, which is clean and environmentally friendly.
The hoist chain is forged from low alloy steel and surface treated to provide high tensile strength and good performance.
There are multiple inspection doors on the casing, which can easily observe the operating conditions of the chain and hopper, and are also convenient for repairing or replacing the hopper and chain.
The middle shell of the elevator is a steel plate bending and welding structure with the characteristics of light weight, good rigidity and small welding deformation, which significantly improves the overall performance of the equipment.
A high-performance check mechanism is provided inside the transmission device, which prevents the traction member and the loading hopper from running backwards while making the overall structure of the transmission device compact and taking up little space.
A tensioning mechanism is provided at the bottom, so that the ring chain has sufficient pre-tightening force during operation; at the same time, an automatic centering mechanism is provided in the bottom sprocket device to prevent the sprocket from tilting due to uneven tension, which may cause equipment failure.
Selection considerations
1. The maximum temperature allowed for TH bucket elevator is 250℃. If the temperature is too high, the hopper and shell will be deformed, reducing the working performance and service life of the equipment.
2. If the equipment cannot operate due to the accumulation of materials at the bottom of the elevator, it may be caused by insufficient instantaneous lifting capacity of the elevator; therefore, the larger instantaneous lifting capacity should be used for calculation when selecting the model.
