|
|
|
|
|
 |
Notice |
| |
  |
| |
| Because the submerged valve is connected to the valve manifold box, the manufacturing quality of the valve manifold box is very important. Besides compliance with the JB10191-2000 requirement "Bag House Safety Requirement to Pulse Jet Bag House based Manifold Box", it shall also comply with the requirements of parallelism, flatness, concentricity and verticality etc. as shown in Fig. 15. If not complied with, there will be leakage and energy waste, and even endangerment to personnel life and equipment safety. Therefore, it is very important that attention is given to this matter. |
|
| |
Fig.15 |
|
| |
|
| |
| If there is unevenness between the valve manifold box and the mounting surface of the valve, after each bolt has been tightened, the valve body will crack due to uneven stress on each mounting foot (see Fig. 16). The valve body might be knocked off after the valve manifold box has been charged. Even if the valve manifold box is mounted evenly with the valve, each bolt on the valve body should be tightened one by one according to a diagonal line to ensure that each bolt is under uniform stress. If one bolt must be tightened because a leakage is found, unscrew its diagonal bolt first, then tighten the bolts one by one. In the circumstance that the compressed air in the valve manifold box has not been discharged completely, screwing any relevant fastener is strictly prohibited. |
|
| |
Fig.16 |
|
| |
 |
| |
| The concentricity of the mounting holes on both sides of the valve manifold box, and the verticality of the two sides of the tube connector and the valve manifold box, are the keys for ensuring proper fitness between the outlet end of the valve body and the tube. When the tube connector is in a state of non-vertical or eccentricity, tightening the mounting bolts on the valve body to correct the tube connector will result in damage to the valve body or leakage caused by single side stress to the seal ring (Fig. 17). It is suggested not to weld the tube connector to the valve manifold box, in order to avoid causing troubles in mounting and maintenance. |
|
| |
Fig.17 |
|
| |
 |
| |
|
|
|
Notice
