subject: Lw630 Horizontal Spiral Centrifuge Discharge Settlement Development [print this page] LW630 Horizontal Decanters type Centrifuge Development
Li Yushu, Jin Jinghua (Jilin Chemical Group Machinery Co., Ltd., Jilin 132021)
[Key words] centrifuges; test; PVC; Domestic [Abstract] LW630 Horizontal Decanters centrifuge structure and performance characteristics. Pointed out that the machine can be used for low molecular weight PVC resin production heterozygosity, can substitute imported products. [CLC] TQ325.3 [Document code] B [Article ID] 1009-7937 (2006) 11-0040-02
Foreword Since 1836 the first industrial use of three centrifuge appeared in Germany, so far 100 years, the centrifuge has been great development in a wide variety of types of centrifuges, each with characteristics , is the high Technology Parameters, series, automatic direction. Centrifuges are now widely used in chemical, petrochemical, oil refining, light industry, medicine, food, textile, metallurgy, coal, mineral, marine, military and other fields, centrifuges have become widely used in national economic sectors General machinery.
LW630 horizontal spiral centrifuge discharge settlement (hereinafter referred to LW630 centrifuge) is Jihua Group Machinery Co., Ltd. (hereinafter referred to Jilin Chemical Machine) in the development of LW500A horizontal spiral centrifuge ( hereinafter referred to as LW500A centrifuge) based on the combination of the newest buses Industry Co., Ltd. of Japan introduced P4600NMA, P5400NMA and TRH050 models developed for the new model. The new models, compared with the model parameters and the structure must change. This paper describes the structural characteristics of centrifuges LW630, main technical parameters of selection, application features and use cases. Practice has proved that the machine design and development is successful, meets a requirement to solve the 50 000 t / aPVC device key equipment??? Centrifuge to replace imported products in key technology for China's Chlor-Alkali Chemical and other industries provides a new product.
1 structural features LW630 centrifuge drum major from the Department of the Ministry differential, chassis ministries. Machine in the design process, fully taking into account national conditions, its structural features are:
(1) motor power 110kW, with hydraulic coupling drive.
(2) differential for the two-level 2K-H type planetary gear differential involute by P5400NMA and TRH050 centrifuge Imperial to metric, easy to process, and can completely P5400NMA and TRH050 centrifuge differential swap.
(3) self-control chain and overload protection. LW630 is a continuous operation of centrifuge equipment for emergency situations to prevent the destruction of the machine, equipped with automatic chain as follows:
lubrication system. The system is equipped with a hydraulic protection, when oil pressure drops below the set value, alarm and cut off the main electrical power supply, the system must be restarted before it can start the main motor.
torque control system. Ruoyin material fluctuations or other reasons Ershi centrifuge torque is too large, more than the value, the security device movement, touch trip switch, cut off the main electrical power signal while the police, to protect the differential is not destroyed.
(4) maintenance and easy installation. Machine during the design process to fully take into account the application of enterprise maintenance and ease of bearing by the overall structure of the host change the split bearing seat.
2 Main Technical Parameters 2.1 Determination of the separation factor, said centrifuge separation factor is the ability of key indicators, is an important indication of centrifuge performance. As the separation factor with the drum diameter and speed of the rotation, according to P4600L, P5400NMA and TRH050 centrifuge existing parameters in the application of PVC production and production processes on materials requirements, at design time to determine LW630 635mm diameter drum centrifuge , host rotation rate n = 2300r/min, differential speed n = 48r/min, control the separation factor in 1800, can be achieved with type centrifuge separation effect on the PVC slurry.
2.2 to determine the size structure of rotary parts
(1) Drum Department Centrifuge cone structure with column, because the aspect ratio of the centrifuge drum body in a very critical parameter. Based on material properties, and compared with P5400NMA centrifuge to determine the aspect ratio of 2.5:1 drum. Centrifuge according to domestic and foreign advanced experience, the whole double cone angle of the drum with the structure of the weld in the cone drum are six non-slip reinforcement panels, this structure can change the parameters of centrifuge technology in ensuring the original condition, the PVC production capacity up to 6.5t / h.
(2) Department of spiral
Spiral screw blade Department is relying on direct contact with sediment and sediment transport components. This machine is designed spiral blade perpendicular to the rotation drum side of the bus, the double helix structure, lead to 286mm, spiral blade thickness of 8mm, cone angle of 15 and 2 . The gap between the screw and the drum control in 1.5mm, blade rotation for the right-hand spiral.
Lw630 Horizontal Spiral Centrifuge Discharge Settlement Development
