Experience of using bucket type crusher free elevator and remedial measures for common problems

This article introduces some possible problems that may occur with bucket type crushless elevators and provides possible solutions. Lift bulk materials from one height to another, which are used in powders, granules, sheet products, and bulk materials. The following editor has shared the content with everyone.

1. Drive pulley

The driving pulley can be a top pulley or a bottom pulley. The motor and gearbox are driven by the top pulley, with no product spillage or dust. The belt tension only needs to be sufficient to provide enough friction between the belt and pulley to lift the material.

Belt tracking and maintenance require an entrance platform for elevator top drive. Using a bottom pulley drive is easy to maintain, but the belt tension is doubled to provide the same drive friction. This increases the load on all moving parts. If the bottom drive wheel is coated with product or the belt is stretched, the belt will slip. There are fewer operational issues with the top pulley drive.

2. The Importance of Cleaning

When the hoist is used for multiple products, operators need to perform quick cleaning. The flange and bolt access doors are well sealed, but the disassembly speed is slow and the threads may accumulate dust. Another option for harmless materials is to use them as shown in the picture

The bottom pulley should be self-cleaning and products should not accumulate between the belt and pulley. One method is to create a grizzly bear design using a round bar. Applying rubber to the drive wheels will increase the driving friction. The rubber joint is cut at a 45 degree angle to the pulley shaft so that the joint gradually enters the friction area of the pulley.

3. Belt speed

The belt speed needs to discharge the material from the bucket and enter the discharge chute. The speed is too slow, and the material slides over the top pulley from the overturned bucket and then back to the bottom of the elevator. The speed was too fast and the material was thrown too fast, hitting the top of the elevator and then falling back to the bottom. This formula can be used to determine the correct belt speed and material throwing.

4. Shaft seal

The pulley bearing should be installed on the bracket outside the elevator casing as much as possible to prevent shaft seal leakage. The shaft seal should be designed reasonably to prevent leakage. Articles on protecting bearings in dusty environments can refer to some useful shaft sealing ideas.

5. Feeding trough

By passing the material through a chute under the action of gravity or using forced methods (such as power feeding screws) to feed the product into the elevator hood. The angle and cross-section of the feed chute should be large enough to prevent product hanging or stacking. Smooth and unobstructed access is crucial. Similarly, the angle, size, and design of the discharge box need to allow the products to flow freely.