Feed Equipment Knowleagde

How to intall casing and liner of feed hammer mill?
The shells of feed hammer mill are bolted together, welded by steel plates and angle steel, and divided into a casing, a lower casing and a half shell. In addition to strict welding quality requirements, they must be tightly combined and must not be misplaced, otherwise they will leak or collide with the rotor and will not turn. In particular, the gap between the centrifugal fan and the side wall of the casing is only a few millimeters. After the upper and lower casings are misaligned, the blade width is often reduced. The gap with the side wall of the casing is increased, which affects the wind pressure and the use effect.
According to the experience of some manufacturing units, the upper and lower casings and half-shells are combined with the whole material, rolled and welded, and after being basically processed, they are opened from the middle. This method has the best processing quality, small misalignment, and is not easy to be deformed. It is also very simple and convenient to manufacture, and is relatively common in use.

The lining and side linings are designed to protect the casing. The lining plate is mounted on the cylindrical wall of the pulverizing mechanical casing; the side lining plate is mounted on both ends and the intermediate end plate. Both are consumables. For the convenience of maintenance and replacement, the types of liners and side liners are required to be small, and the interchangeability is good. Therefore, it is better to match the bolt holes connecting the casing with the lining plate and the side lining plate, and leave the model or template of the lining plate and the side lining plate for future use, if the casing and the lining, The bolt holes of the side liners are separately drilled separately, the hole pitches are difficult to align, and it is not easy to install, and it is more difficult to replace them later. Some customers in this area have suffered too much. Every time the lining or side lining is replaced, the hole is re-machined on the casing, which delays the time and affects the use. In addition, the bolts on the side lining Preferably, the holes are drilled before the casing is welded and the end plates and the intermediate end plates are pre-welded, so that the processing is easy.