Introduction of Motor IP Grade :The Meaning of First Number

Motor IP (INGRESS PROTECTION) grade system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION ).IP grade is composed of two numbers, the first number represents for anti-invasion grade of external objects and dust, the second the number shows that the sealing degree of anti- invasion of moisture and water, if the number is greater, the degree of protection will be higher.
0: no special protection
1: it can prevent external objects with solid diameter larger than 50 mm entering into the casing.
2: it can prevent external objects with solid diameter larger than12 mm entering into the casing.
3: it can prevent external objects with solid diameter larger than 2.5 mm entering into the casing.
4: it can prevent external objects with solid diameter larger than 1 mm entering into the casing.
5: protection against dust, it can prevent dust from entering to affect the normal operation of the product, and prevent dust contacting the inner casing or parts.
6: sealing against dust, it can completely prevent dust from entering into the casing and prevent the dust contacting the inner casing or parts.

Installation,Debugging and Operation for Tripper Conveyors

Tripper conveyor is a mobile device which can unload materials at the arbitrary point of horizontal section of the belt conveyor, it’s a single part of the belt conveyor. The installation, debugging and operation notes are as follows:
Installation
The installation and primary debugging of tripper conveyor are finished before leaving factory, the only thing needs to place the tripper conveyor on the guide rail, and the conveyor belt should be through the pulley, roller group of tripper conveyor and make sure the conveyor belt goes by the driving pulley of head section, the turnabout pulley of tail section of belt conveyor.

Debugging and operation
Upon the completion of the conveyor belt connection, tripper conveyor cable arrangement, you can debug according to the following steps:
Please check whether the reducer is lubricant, whether there are obstacles that the tripper conveyor may collide when it walks around before start-up .
Inching run the tripper conveyor the first time in order to see if the brake of tripper conveyor is adjusted well, it can not only avoid it collides with the potential barriers, but also can check the facilitating conditions of the guide rail and the walking wheel of tripper conveyor, as well as the operation situation of every part of tripper conveyor.
After confirming all above mentioned operations are normal, the tripper conveyor can be operated on the guide rail at any point, the purpose of the test is mainly observing the walking flexibility, reliability, walking wheel and the guide rail, please adjust it if necessary.
After the above mentioned is qualified, the tripper conveyor can be put into use.

Troubleshooting of Abnormal Noise during the Operation of Bucket Elevator

1. The base plate and chain bucket of bucket elevator collide with each other: adjust the take-up device of base in order to stretch the chain.
2. The driving shaft and driven shaft key is flabby, the sprocket is drift, chain bucket collides with casing: the position of sprocket needs to be adjusted and the key needs to be stretched.
3. The guide plate collides with chain bucket: readjust the position of guide plate.

 

4. There are some materials mingled in the guide plate and chain bucket: enlarge the inputs angle of material inside the base.
5. The failure bearing causes inflexible operation of bucket elevator: the bearing need to be replaced.
6. The pieces of materials or other objects stuck in the casing: stop the operation of bucket elevator and remove the materials. 
7. Gear profile of sprocket (driving and driven sprocket) is abnormal: correct the gear profile of sprocket or replaced driving sprocket. 
8. Gear profile of driving sprocket and chain is out of order: the sprocket gear profile needs to be corrected. 
9. Drive chain idling: adjust the length of chain.
10. The casing is not installed properly: the full length of vertical alignment of casing needs to be adjusted.