At present， the international commonly used chain bucket elevator is vertical type, according to JB3926-85 standard, the most widely used is TD type belt bucket elevator, TH type ring chain and TB type plate chain these three types. TD Belt bucket elevator adopts high-heart or mixed unloading method, which is used for conveying loose density less than 1.5t/m3 powdery, granular, small lumps of non-abrasive or finely crafted materials, material temperature does not Tsuji 60 dead, when the material temperature in 60~200℃, It should be used heat-resistant rubber belt. The lifting height is about 4~40 m range, and the throughput is 4238 m/h.
TH type chain bucket elevator adopts the method of mixed or gravity unloading, which is suitable for conveying powder, granular and small sized non-abrasive or medium abrasive materials with loose density less than 1.5t /m3, and the material temperature is no more than 250℃. The lifting height is in the range of 4.5~40m, and the throughput is 35~ 365 m3 /h.
TB type plate chain bucket elevator adopts gravity unloading method, it is suitable for conveying loose density less than 2 t/m3 of medium, large, abrasive material, material temperature does not exceed 250℃. The lifting height is about 5~50 m, and the throughput is 20~ 563 m '/h.
THG type and TDG type bucket elevator are the modification of TH type and TD type bucket elevator. There are some remarkable features in the structure:
1. The transmission device adopts the vertical shaft reducer and the hydraulic coupling, the structure is compact, it has realized the flexible transmission, and can not only enable the movement to be smooth, also enable the motor reducer and protected the traction component, It can enable the material to maintain a stable state when the machine stops.
2.  It adopts heavy hammer tensioning device that can be used to realize automatic tensioning and maintain constant tensioning force to avoid belt slipping or chain trip, that ensuring the normal operation of the machine.
3. The head, tail and middle casing are all totally sealed, so that the material and dust will not be exposed, and it can avoid environmental pollution.
4. In order to transmit the control signal to the computer in the central control room and monitor the operation of the bucket elevator, a material level controller and a speed controller are added in the lower part.
THG type chain bucket elevator, it with the ring chain as the traction component. The ring chain is made of alloy steel, with moderate hardness, high strength and good wear resistance after surface heat treatment. The conveying capacity is 16~1 800 m'/h, and the lifting height is 5~75 m.
TDG type is a bucket elevator with good toughness and high strength EP conveyor belt or steel rope core conveyor belt as the traction component. The conveying capacity is 24~2 080 m2/h, and the lifting height is 5~ 80 m.