Do you Know About the Installation and Adjustment of the Pull Cord Switch on the Belt Conveyor?

Do you know about the installation and adjustment of the Pull Cord Switch on the belt conveyor?
Pull Cord Switch is commonly known as "emergency stop switch". When the belt conveyor need downtime, Pull Cord switch action will stop the conveyor. Pull Cord Switch can be divided into manual reset and automatic reset. Automatic reset: after action, it can automatically return to the initial position, may lead to error start. Manual reset: after action, the self-locking device can maintain the operating position, it need to manually reset handle to make its return to the initial position.
Pull Cord Switch should be installed on both sides of the conveyor where has a maintenance channel, installation position should ensure that the maintenance person operates conveniently in the event of an emergency.
1.Pull Cord Switch is fixed on the rack.
2.The distance of the two switches on one side is about 50 m, the two switches are connected by the diameter 4mm of wirerope, elastic should be moderate.
3.To reduce the influence of the weight of wire rope on switches, we install supporting ring on the frame every 3 m to support the steel wire rope.
4.The other end of the rope is in tension spring (with rope buckle), In a way not affecting the normal use, using tightener to pull the rope tension on both sides, and to ensure that tension is balanced on both sides.
(Note: The climbing section of the conveyor, should try to shorten the Switch spacing distance and the pull rope length.)

 

Strict Inspection—Provide Perfect Equipment for Cients（Ⅱ）

3.Thickness test of paint coating.
Adhere the coating thickness meter probe to the equipment surface,then the data is the coating thickness of this point.Since the equipment surface area is large,it should be tested with many areas, it also requires multiple measurements to take average.
4.Amplitude test of equipment
After equipment runs normally,adhere the amplitude measuring scale to the side wall of screen box.There are many different circles with different diameter,and the movement locus will become to ellipse due to vibration,however, circles’ movement locus is still a circle,it shows that this circle’s diameter is very approached to the equipment amplitude,therefore,the circle diameter is vibrating amplitude.
All tests above have their own standard data,when the testing data has big difference with standard data,we will debug repeatedly to ensure equipment with a optimum working condition.

Do You Know the Application and Difference of Shaft and Shaftless Trommel Screen?

Do you know the application and difference of shaft and shaftless trommel screen? If not, following mentioned points are the matters, please attach much importance to them.

Trommel screen has two kinds of structures of shaft and shaftless. Both of them can be used for some common bulk materials, while according to the application working condition, the appropriate one must be selected for some materials with special properties.

Trommel screen with shaft

The drum is fixed aslope on the main frame. Motor, reducer and drum are connected by a coupling, and the driving drum rotates around an axis. Owing to the inclination and rotation of drum, the materials on the screen surface can move forward and roll. The materials will be divided into two parts: the qualified one will be discharged from the bottom hopper, and the unqualified one will be discharged from the end outlet. The rotation of the material in the drum makes the blocked material bounce out of the aperture, preventing the mesh blocking.

Trommel screen with shaft is generally used for screening granular material with large density, such as: sand, coal, limestone, fertilizer, compost and mineral, etc.

Shatless trommel screen

The shaftless trommel screen is installed horizontally. Generally, the rotate speed of the drum of motor wheel gear or motor chain is very slow, and the length of the drum can be designed longer to increase the screening efficiency. There is a delivery plate inside the drum, which can make the material move forward. The material which is larger than mesh size will be discharged at the end outlet, and the material which is smaller than mesh size will be discharged at the bottom discharge hopper. If the material is household garbage, a cutting tool is also can be added to rive some plastics bags, etc.

Shaftless trommel screen is usually used for screening material with small density, such as: waste, wooden chips, activated carbon, fertilizer, construction material, chemical material, etc.

Pay Attention to the Unbalance Motor Vibration Phenomenon of Vibration Table!

On the surface of it, vibration motor will become a veritable vibration equipment, just need plus a few springs on the equipment, and put on a few motors, then it will be applied for vibration production? While it’s more difficult than what you see. Now PK Co., Ltd will give you the further insight about the unbalance vibration phenomenon of the vibration motor for vibration table.

The problem of uneven and unbalance that causes the vibration can never be solved when the vibration motor is running in the equipment. There is influence of the unbalanced vibration in the screening equipment, however, in the process of making the vibration table, the problem usually happens. We also always take less importance to the problem of the unbalanced force of vibration equipment in reality.

1.The problem of motor rotation can happen and the material will move on the surface of vibration table in the use of a single vibration motor on the vibration table.

2.The uniform vibration point of the vibration table will be changed in the use two vibrating motors. The counter rotation of two motors will result in the power counteraction in the middle of the vibration table. The vibration amplitude in the center of the table can’t be over 3mm if the vibration amplitude around the platform is 5mm.

Strict Inspection—Provide Perfect Equipment for Clients(Ⅰ)

 After the circular vibrating screen production was completed,and there is an important step before delivery goods,that’s test running,and judge the equipment whether can work normally through equipment running condition,please see following test items:
1.Measuring rotary speed of principal shaft
The test principle is through infrared sensor scanning a fixed point on the shaft to confirm the rotary speed.Firstly,pasting the measured speed tags on rotor surface.then running the equipment,after the normal running，let the tachometer probe aims at one point on the tag movement locus,record the data,and it requires multiple measurements to take average.
2.Noise test of equipment running.
A good equipment should work without abnormal sound,after the equipment running normally,place the noise meter probe near the running parts of vibrating screen,record the data, it requires multiple measurements to take average.

Why will Belt Conveyor Pulley Wear?

Belt conveyor is a kind of common conveyor equipment, often used in a variety of material transportation with large throughput, stable performance. In the process of using, pulley may occur wearing, this phenomenon is caused by two reasons:
One reason is that the design gap between roller bracket and pulley is too small, at the same time, building foundation hole vertical distance is less than the pulley support distance.In the process of belt running, overlarge belt tension will result in the change of its traction.Return accretion has not been cleared up, which will form accumulation debris and occur rubber friction.For design factors,as the space between pulley stents and pulley is too small, and the base hole of the vertical distance is less than the pulley support distance, it is not easy to handle timely, which is the main cause of pulley rubber lining wear.
Work environment factor is the second reason leads to rubber lining equipment damage phenomenon.

 

PK Engineering Suggests Daily Care and Maintenance of Motorized Pulley

Are you worried about maintaining and repairing motorized pulley during belt conveyoroperation? We are sure the following solution in four aspects will be a big help :

1. In order to create a good situation for normal operation, surrounding environment, fastening bolts, oil leakage, the cable should be checked before each start-up.

2. Start up the new pulley with inching running, then it will become normal gradually, machine vibration, noise, and temperature heating of each operating component should be checked after running for 10 minutes.

3. If oil leakage occurs to motorized pulley, two parts should be checked : one is oil seal, check it whether has wear and tear or deformation phenomenon, if any, please replace the cage oil seal timely; the other one is that the outlet mustn’t be blocked, if there is any blockage, the deposition of dust, grease and sundries shall be removed as soon as possible to ensure smooth access.

4. Regulation of the oil level height is one of the conditions to ensure the normal operation,so please check the oil level regularly.

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