80 000 T / A Pvc Unit To Run The Import Summary Centrifuge - Centrifuge - Education Industry

PVC; Centrifuge ; Run [Abstract] 3400 U.S

PVC; Centrifuge ; Run [Abstract] 3400 U.S. BIRD company structure centrifuge principle and in Jinhua Chemical (Group) Co., Ltd. 80 000 t / aPVC Device Games Price Conditions, and operating problems occurred during the process were analyzed, the corresponding solution.

PVC resin in the production process, from drying polymer slurry need to remove the moisture was only after powder packing and shipping, and centrifuge drying process is one of the key equipment, the operating conditions PVC product will directly affect the quality and capacity of the entire package. Jinhua Chemical (Group) Co., Ltd. (hereinafter referred to Jinhua) 80 000 t / aPVC device dry process patented by the European ethylene Technology , Introduced the two Taiwan and American companies 3400 BIRD-type centrifuge, after several years of production shows that the model is running smoothly, high automation, easy operation, safety and reliability, achieved good operating results.

1 centrifuge structure BIRD Corporation 3400 Main technical data type centrifuge shown in Table 1, the structure shown in Figure 1, by the host and the lubrication system of two parts.

(1) the host part. The host, including drum components, differential, coupler, 5 main bearings and chassis parts.

Drum components mainly from the drum, screw conveyor, and feeding tubes. Drum is the drum core component, it can produce the centrifugal force, according to the density slurry solid-liquid separation of different them, the drum cone structure for the column, it's long and narrow cylinder to assist in advancing the slurry transfer drum cover installed on both sides, as PVC for the small powder particles in contact with the material end caps on both sides of the drum wall and easy to wear, so its surface is coated with wear-resistant layer. Cylinder discharge end for the liquor side, cone-ended output filter cake, cover with the bolts fastening the drum on both ends to form a cylinder closed at both ends. Cylinder covered with reason and overflow weir can be adjusted by changing the height of liquid layer depth, cone reason and cover with detachable scraper, which is made of wear-resistant material to prevent separation of small particles of solid discharge port on the surface of wear, are wearing parts can be replaced.

Screw conveyor located inside the drum, including the feed room and a spiral blade, feed room in the center of spiral conveyor can be obtained through the feed tube sizing. Spiral blade plate welding in the feed outdoor wall, the gap between it and the drum is small, can be isolated filter cake (water content 25% ~ 30%) onto the drum discharge port side of the cone, spiral conveyor feeding tube connected at one end and the other end is connected with the external differential spindle. Differential is a fully automatic control of the stability of planetary gear drive, the drum and the screw conveyor is the difference between the speed differential to rely on regulation. Centrifuge normally run at higher speed ratio to achieve the desired separation.

Coupler outside of the pulley on the centrifuge to play the role overload. 3400 centrifuge for the main bearing tapered roller bearing, and radial force and axial force, installed in the chassis at both ends of the outside, we rely on oil lubrication system.

(2) lubrication system. Lubrication system consists of pumps, oil filters, oil coolers and fuel tanks four components, the main bearing oil and the continuous cooling.

2 Work [1] Kam of 80 000 t / aPVC introduction of this device 2 centrifuges for the horizontal spiral centrifuge, it is by centrifugal force to separate from the suspension of small solid particles, the core components including the drum, screw conveyor, and differential. Their work within the rotating drum a centrifugal slurry separation force (force of gravity of this many times), so that the solid density of small particles separated from the suspension to the centrifuge axis from the direction of the drum wall forward. Installed in the drum helical screw conveyer within the rotor blade and a small wall space, to slow the speed of rotation. Flung drum wall of solid particles are pushed to the drum spiral conveyor at the bottom of the discharge port discharge, the differential control of the drum and the relative velocity between the screw conveyor to control the solid material within the stagnation in the centrifuge time to achieve the purpose of regulating water content of cake.

3 run advantage (1) adaptability. 3400 centrifuge for centrifugal drying process for the design of PVC, it has fully considered the solid-liquid slurry physical and chemical properties, is suitable for PVC slurry solid-liquid separation process requirements. Performance of the main components (such as overflow weir) to achieve a scalable design, the bowl, cover and other parts in contact with the slurry wear layer design used to extend the life of the machine.

(2) high degree of automation. 3400 centrifuge equipped with a high degree of automation control systems. Speed, torque, oil temperature, flow rate of operating parameters were visual, adjustable state, to ensure the centrifuge operation in top running condition. Each operation is a continuous process fully automatic operation, thereby reducing demands on the quality of the operator.

(3) technology and strong. BIRD Company centrifuge using differential and couplers and other control systems, can be flexible on the difference stepless speed adjustment and on-line intelligent control. Running time can be adjusted according to material changes in speed, so that the centrifuge down to the lowest energy consumption.

(4) operating environment and better security protection.

Centrifuge separation of the material is completely sealed under the conditions, and to ensure the operation site clean and pollution-free, easy site management, and civilized production. Centrifuge during operation noise and improve the operating environment, but also coupling, power control, multiple protection, can effectively reduce or eliminate the sudden failure of the machine damage.

4 common failure analysis and repair methods [2]

3400 centrifuge structure is more complex bound to failure, are some common failure analysis and troubleshooting.

(1) excessive vibration.

Centrifuges operating smoothly under normal circumstances, less noise. Abnormal, the cause vibration increased, due to poor balancing, resulting in the eccentric, often may be operational problems or equipment failure itself. In operation, the centrifuge 5min driving need to rinse with water before feeding, when parking is also flush with water inside the device. If you do not operate strictly in accordance with operational procedures, internal drum material easy to have uniform sediment, making it lose the dynamic balance. To clear the drum of material deposition, washing and clean water must be filling with manual plate car back to normal up until the centrifuge vibration. In addition, the feed will also cause uneven vibration is too large, then adjust the feeding quantity, while improving speed slurry mixing tank, so that transport to the centrifuge of the suspension

by: gaga

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