Specifications

Double shaft for air lock series
Max 5 air locks with one reducer
Fit for large flour mills
Good air sealing
High efficiency

Brief Instruction of Air lock feeder

Air lock feeder  is an important device for pneumatic conveying and dust removal. The main usage of air lock is to timely and constantly unload the material from discharger or dust collector, and to prevent the outside air from entering the discharger or dust collector. Air lock feeder can handle materials in powder, pellet, flake shapes and also fiber materials. And at the same time, air lock feeder  is widely used in rice milling, powder, animal feed, machinery, chemical engineering, medicine, tobacco, metallurgy and cement making, dust removal and many other industries.

Structure and Working principle of Air Lock feeder

This air lock  feeder  is a kind of improved impeller open type air lock  feeder. It is a discharging machine structured with impeller, bearing, oil seal, air lock shell, end cover and other spare parts. On the top of the air lock  feeder  there is flange connected with the unload opening of discharger to receive the material from discharger, and then unload material from the bottom of air lock  feeder while impeller rotating. The impeller is open type, which can prevent material from blocking as well as reduce air lock weight and shape.

 

 

Model Selection for Air Lock  feeder  and Using Form

 

Model selection basis for air lock feeder:

 

1. Material granularity (powder or granule);

 

2. Material viscosity(water or other liquids included);

 

3. Material pH value(may select common material or stainless steel with different properties);

 

4. Material temperature(select external type air lock above 60°C);

 

5. Material handling capacity(Theoretical calculation of volume×1.2).

 

Using form for air lock  feeder:

 

Independent work by single air lock  feeder( transmission by belt, chain or direct coupling), multi-machine series and in parallel. No more than 5 air lock  feeders in one unit when working by multi-machine in series or in parallel. The length of tandem shaft coupling and the height of bracket can be decided by users.

 

Installation and Use for Air Lock  feeder 

Before installation air lock  feeder  must be carefully examined to make sure the impeller rotates flexibly and that relevant connecting parts reliable and correct. Then fix the air lock  feeder  on the floor or the bracket. Add full oil according to the using instructions if there is a reducer (3# Lithium-based lubricant). If a combination of air lock  feeders  are used, there must be overload and short-circuit protection devices in order to prevent the damage of motor.

 

Before feeding, air lock  feeder  with separate power must be turned on before host machine, while air lock  feeder  without separate power should be turned on with host machine at the same time. And air lock feeder  should be shut down after discharging of raw material.

 

Always pay attention to the observing window to see whether material flow is normal or not while running the air lock  feeder. Timely treatment if accumulation.

 

Daily Maintenance and Repair for Air Lock feeder 

1. Lubrication

 

While installation of reducer for air lock  feeder  driving, the added lubricant should be fully unloaded one month later and add  the new lubricant. Regular check for oil level keep. Lubrication for air lock  feeder bearings can be done when equipment maintenance.

 

2. Lutation

 

Both ends of the viewing window of air lock  feeder  are U type rubber sealing rings, and they should be replaced immediately if damaged.

 

Oil seal is for the lutation of impeller shaft and end cover, which should be always checked. It should be replaced immediately if damage, otherwise the material will enter into the rolling bearing and thus cause bearing damage. Users are advised to choose air lock  feeder  with double oil seal and discharge opening.

 

Lutation between impeller and air lock shell is the key point of  air lock  feeder. If the other place does not leak but material accumulation happens, it is mostly because of the abrasion between the impeller outer diameter and the inside holes of the device shell. In this caseusers shouldreplace immediately.

 

3. Teardown and Maintenance      

 

Correct methods for air  lock  feeder  teardown:

 

1. Tear down by bolt;

 

2. Tear down by hammer. Remember to put copper bar or wood blocks on spindle head or end cover when teardown.

When replacing, first clean the end cover, then fit the machine with the same specifications of the oil seal and bearing. There must be full lubricating oil.