Bucket elevators design considerations

Bucket elevator is widely used in many industries, the bucket elevator model selection is very important. What notices should we pay attention to during the selection of the model? Please check the following :
1.In general, the types of bucket elevator belt are ordinary or heat- resistant steel cord belt. Ordinary steel cord belt is suitable for material with temperature lower than 80 degree. Heat- resistant steel cord belt is suitable for material with temperature lower than 120 degree.
2.Considering the uneven feeding material and lump size, the allowance of the bucket elevator capacity should be sufficient.
3.The driven device support frame and maintenance platform should be installed on the head casing. Customer should state whether need the maintenance platform according to requirement.
4.There is dust removal flange on the head part of the bucket elevator. You can connect with dust collector if the material with large amount of dust.
5.Please provide the following information for us to select model: material name, size, bulk density, temperature, moisture content, lifting height, feeding equipment name, working indoor or outdoor.
6.If the conveying material is fly ash, the bucket speed should be less than 1.3 m/s. The driven part should be specially designed.

Necessary Data for Selecting a Suitable Bucket Elevator

Bucket elevator is a kind of hoisting equipment which is extensively used for cement, chemical products, grain, slag and many other materials or products. But how much do you know about model selection of bucket elevator? Here PK Machinery will illustrate the knowledge from the following aspects:
1. Materials
A.Name of material:_____
B.Density of material:_____t/m3
C.Particle size:_____mm
D.Handling capacity:_____t/h
E.Water content of material:_____%
F.Material temperature:_____℃
2. Height
A.Lifting length(distance between inlet and outlet):_____m
B.Outline height of bucket elevator:_____m
C.Distance between shaft of head drum and tail drum(shaft of chain wheel):_____m
3.Driving Device
A.Brand:domestic or imported?
B.Voltage:__V__Hz3ph
4.Other Parameters
A.Working condition, indoor or outdoor?
B.What is the upstream and downstream equipment?
Above mentioned model selection parameters are essential,if you have other special requirements,please let us know . More information or any interest, please visit www.pkmachinery.com 

Do You Really Know the Safe Installation of Bucket Elevator

1.The bucket elevator must be securely mounted on a solid concrete foundation. Concrete foundation surface should be flat and present as a horizontal state to ensure well-installed bucket elevator can achieve vertical requirements. Middle and upper casing section of a higher height bucket elevator should be connected with the neighbouring buildings in order to increase its stability. Firstly, please install the lower part, fix the anchor bolt, and then install the middle casing and upper casing. After complete the installation, please adjust and correct the vertical height, upper and lower shaft should be parallel to each other, and shafts should be in the same plane. When install the bucket elevator with a lower height , you can connect the upper ,middle and lower casing well first on the ground, and then hang the complete set vertically and fix it on the concrete foundation.

 

2. After completing the installation of casing, you can install the chain and bucket. The u-shape screw which is used for connect the buckets, it is not only a chain connector, but also a fixture of buckets. U-screw nuts must be tighten and locked securely, after the installation of chain and bucket, please adjust it to get a proper tension. 
3.Add the appropriate amount of oil or grease in the gearbox and bearing respectively, reducer should be lubricated with industrial gear oil, bearing seat can be lubricated with calcium or sodium base grease.

How to Install the Asbestos Tape in the Bucket Elevator?

How to Install the Asbestos Tape in the Bucket Elevator?

In the process of the installation of the bucket elevator,in order to prevent the leakage of dust, pollute the environment,our engineer anways using the asbestos tape in the bucket elevator.Here we will introduce the detailed information as follows.

asbestos-tape

Why the asbestos tape has such good sealing?That's mostly because the asbestos tape is woven with high quality stone cotton yarn.Asbestos tape is suitable for various thermal equipment for heat preservation, heat insulation material or processed into other asbestos products.

bucket elevator

A good sealing plays an important role in the installation quality of the bucket elevator.  Asbestos Tape is the best choice of sealing material, which is installed on the casing flange joints.What you should pay attention is that you should put the asbestos tape into the interface beforing connecting flange, and then connecting the bolts.

asbestos-tape-of-bucket-elevator

Lubrication of NE Plate Chain Bucket Elevator

In order to ensure the normal and reliable operation, longer life span of the bucket elevator, users should formulate the maintenance regulation.

Regular maintenance
1.Keep the environment clean and do regular cleaning for the bucket elevator body and drive unit;
2.Check regularly for fasteners to see whether they get loose;
3.Check if any problem with the electric wires and plugs;
4.Check if all points are lubricated with enough oil.

 

No.	Lubrication part	Lubrication category	Lubrication period	Lubrication method
1	Head/tail bearing	Calcium based grease	6 months	Intermittent
2	Take-up screw rod	Calcium based grease	3 months	Intermittent
3	Transmission Chain	HJ-40 machine oil	3 months	Intermittent
4	Reducer	HJ-40 machine oil	6 months	Continuous
5	Motor	Calcium based grease	6 months	Intermittent

Model Selection of Bucket Elevator

 As common used lifting equipment, selection of bucket elevator is effected by many factors, wrong model will give customers endless troubles. Generally, model selection of bucket elevator depends on the following factors.

1. Material shape: powder, granular or small lump material.

2. Physical property: adsorbability or viscosity, and moisture content.

3. Proportion of material: common bucket elevator parameters are designed and calculated according to the materials which mass density under 1.6. While large proportion of materials are according to tensile strength of traction and drive part.

4. Unit conveying capacity:

Generally speaking, shape of material directly determines the discharging method. It is common practice that powder materials use centrifugal discharge and gravity discharge for lump materials. In addition, different charge method determines the different type of bucket, centrifugal discharge always use shallow or arc bucket, while deep bucket for gravity discharge. The unit conveying capacity of bucket elevator is different as its different bucket type. The conveying capacity of bucket elevator is a comprehensive parameter that depends on bucket type, speed, proportion of material, property of material and number of bucket. Selection process is as follows: proportion of material, property of material, discharging method, bucket type, conveying capacity and the model.

 

The Solution to Solve Blockage of Bucket Elevator

If there is blockage, please stop feeding material immediately, if serious ,please stop the machine and check the cause of blockage. Please use a shovel or special tools to clear up the blocked materials instead of hands.

1.If blockage is caused by big lump material entering into the base , please stop machine ,remove big lump materials and plugging materials.
2.If blockage is caused by insufficient tension of bucket belt, please adjust the tension after removing plugging materials. 
3.If blockage is caused by large feed flow rate which exceeds the bucket elevator capacity, please adjust the control valve or use other methods to control the flow rate after removing plugging materials .
4.If blockage is caused by feed before start-up, please remove plugging materials, start up the bucket elevatoragain and operate in strict accordance with the rules. You can only feed the materials after non-load running is normal.