What are the applicable scope and characteristics of the Bucket elevator?
Introduction
Bucket elevator is a kind of fixed mechanical conveying equipment, mainly suitable for continuous vertical lifting of powdery, granular and small materials. It can be widely used in feed mills, flour mills, rice mills, and oil plants of various sizes. Upgrading of bulk materials in factories, starch plants, grain depots, ports, etc.
Bucket elevators are used to vertically lift the block and granular materials such as limestone, coal, gypsum, clinker, dry clay, etc., as well as powdered materials such as raw meal, cement, and coal powder that have passed through the crusher. According to the speed of the hopper, the bucket elevator can be divided into three types: centrifugal unloading, gravity unloading and mixed unloading. The centrifugal unloading hopper has a faster speed and is suitable for conveying powdery, granular, small lumps and other materials with low abrasiveness; the gravity unloading hopper has a slower speed and is suitable for conveying lumpy and larger specific gravity materials. , Materials with high abrasiveness, such as limestone, clinker, etc. The traction components of the bucket elevator include loop chains, plate chains and belts. The structure and manufacture of the chain are relatively simple, and the connection with the hopper is also very strong. When transporting abrasive materials, the wear of the chain is small, but its own weight is relatively large. The plate chain structure is relatively strong and its own weight is relatively light. It is suitable for hoists with large lifting capacity, but the hinged joints are easy to be worn. The structure of the tape is relatively simple, but it is not suitable for conveying materials with high abrasiveness. The temperature of ordinary tape materials does not exceed 60. ℃, the temperature of the material with the steel rope tape can reach 80℃, the temperature of the heat-resistant tape can reach 120℃, and the temperature of the material conveyed by the chain and plate chain can reach 250℃.
Scope of application
This series of bucket elevators are suitable for conveying powdery, granular and small pieces of non-abrasive and low-abrasive materials, such as coal, cement, stones, sand, clay, ore, etc., due to the The traction mechanism is a circular chain, so materials with higher temperatures are allowed to be transported (the temperature of the materials does not exceed 250°C). The general conveying height can reach up to 40 meters.
Function
This type of lifting equipment has the obvious advantages of large conveying capacity, high lifting height, stable and reliable operation, and long life. Its main performance and parameters conform to "Vertical Bucket Elevator" (JB3926-85) (this standard is equivalent to refer to international standards and Advanced foreign standards), the traction circular chain conforms to the "High-strength circular chain for mining" (MT36-80). This elevator is suitable for conveying powdery materials, so materials with higher temperatures are allowed.
Features
Driving power
The driving power is small, and it adopts inflow feeding, induced unloading, and large-capacity hopper intensive layout. There is almost no material return and digging when the material is lifted, so the ineffective power is small.
Lifting range
The lifting range is wide. This type of hoist has less requirements for the types and characteristics of materials. It can not only upgrade general powdery and small granular materials, but also upgrade materials with greater abrasiveness. It has good airtightness and less environmental pollution.
Operational ability
Good operation reliability, advanced design principles and processing methods ensure the reliability of the whole machine operation, and the trouble-free time exceeds 20,000 hours. High lifting height. The hoist runs smoothly, so it can reach a higher lifting height.
Service life
The service life is long, the feeding of the hoist is inflow type, no bucket is needed to dig the material, and there is little squeezing and collision between the materials. This machine is designed to ensure that materials are rarely scattered during feeding and unloading, which reduces mechanical wear.
Working principle
The hopper scoops up the material from the storage below. As the conveyor belt or chain is lifted to the top, it turns down after bypassing the top wheel, and the bucket elevator pours the material into the receiving tank. The transmission belt of belt-driven bucket elevators generally adopts rubber belts, which are installed on the lower or upper transmission rollers and the upper and lower reversing rollers. Chain drive bucket elevators are generally equipped with two parallel drive chains, with a pair of drive sprockets on the upper or lower side, and a pair of reversing sprockets on the lower or upper side. Bucket elevators are generally equipped with an organic shell to prevent dust from flying in the bucket elevator.
Structure
Nose part
It is assembled into a whole by the upper casing, driving shaft parts, reducer, coupling, motor and so on.
Middle cabinet
According to the height that needs to be raised, the configuration of different numbers of middle cabinets can meet the needs.
Lower part
The bottom casing, the driven shaft part and the tensioning device are integrated. There is a door on the side of the cabinet that can be opened for inspection such as cleaning.
Chain and hopper
The chain is a round steel welded link chain. The hopper is fixed on the joint of the chain with a nut. Bucket elevators of different heights are now equipped with a corresponding number of chains, joints, and hoppers.
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