工作原理
LWL臥式螺旋卸料過濾離心機，懸浮液通過進料管進入轉鼓與螺旋之間的過濾腔，從轉鼓錐底處進入，在離心力作用下，料漿中的液相通過轉鼓內側的濾網濾出，固相則被截留在轉鼓內，同時固相在離心力和螺旋與轉鼓的差速作用下，從轉鼓小端向大端運動。隨著轉鼓回轉直徑的變大，離心力也增大，截留的固相從初始的較高的含濕率到排出轉鼓時達到最小的含濕率，實現固液相自動連續的分離。
配置洗滌管，可在過濾的后段對濾餅進行洗滌提純。較薄的過濾層，可以獲得較好的洗滌效果和較低的洗滌劑消耗。
對于易產生二次結晶的物料，可以配置蒸汽管，按設置的清洗周期對內腔的結晶進行高溫清洗。
LWL臥式螺旋卸料過濾離心機因其連續過濾的特性，生產效率高，連續自動進出料，對于適當粒徑的物料尤其適用。
Operating principle
Working principle of LWL Horizontal screw
The suspension will be fed into rotor drum via feed pipe firstly through the filtering cavity between the rotor drum and screw and then cone bottom of the rotor drum. Under effect of centrifugal force, liquid content of the suspension will be filtered out via the filter net in the rotor drum while the solid content retained in the drum which will be forced to move from smaller end of the drum to the larger end under effect of the centrifugal force as well as differential between the screw and rotor drum. As rotating diameter of the drum increases, the centrifugal force increases, which reduces moisture content of the solid (which is high at beginning) to a level as low as possible before discharge, achieving automatic continuous process of liquid/solid separation.
The unit is designed with washing pipe for rinsing and purification of filtering cake by end of filtration process, the thinner the filtering layer is, the better effect of rinsing and the lower consumption of detergent would be.
For materials that are prone to secondary crystallization, steam pipes can be configured to clean the crystals out of the inner cavity at high temperature in preset frequency.
LWL horizontal decanter is especially suitable for processing material of appropriate size as it' s capable of continuous filtration in a highly efficient way and allows continuous feed and discharge process.
LWL結構簡圖
LWL Structure diagram
技術參數 Technical parameter
主要特性
u 轉鼓錐角可按工況選擇20或40度
u 過濾網可選擇金屬板網或契形網
u 變頻控制，轉鼓轉速無級調整
u 多種潤滑方式：脂潤滑(標配)、噴油潤滑、油氣潤滑
u 全自動加油裝置
u 高精度轉鼓(數控加工、高精度平衡)，高分離因數，提高分離效率
u 設置主軸封，有效防止竄料
u 聯組傳動帶
u 測速傳感器
u 自動清洗程序：進料管清洗、洗滌管清洗、轉鼓外側清洗、機蓋內表面清洗、出料斗清洗
u 系統全密閉，滿足清潔生產要求
u 多重保護：過振動保護，開蓋保護，電機過載保護，氮氣保護，靜電接地保護，檢修密碼鎖定
Main features
u The rotor drum may be set with a cone angle of 20 or 40 degree depends on different working conditions
u Filtering net may be metal lathing or wedge-shaped net
u Variable frequency control, rotor drum velocity stepless adjustment
u Various type of lubrication: Grease lubrication (standard), oil spray lubrication, oil-air lubrication
u Fully automatic oil recharging device
u High precision rotor drum (digital machining, high precision balance), high separation factor, improving separation effectiveness
u Designed with main shaft seal which prevents from fleeing material
u Joint driven belt
u Velocity sensor
u Automatic cleaning process: Clean the feeder pipe, rinsing pipe, rotor drum external, unit cover inner surface cleaning, discharge hopper cleaning
u Fully enclosed system, satisfying pharma specification
u Multiple layers of protection: over-vibration protection, cover-opening protection, motor over-load protection, N2 protection, static grounding protection, maintenance password lockout
定制形式 Personal form
LWL轉鼓錐角
u 較小的錐角能得到較好的洗滌效果
u 較大的錐角能得到更大的處理量
u 針對物料特性選擇合適的錐角
LWL Cone angle of rotor angle
u Smaller cone angle allows the rotor drum to achieve better washing performance
u Larger cone angle allows the rotor drum to process more
u Suitable cone angle may be selected for specific nature/characteristics of the material
LWL契形過濾網
u 帶直邊b的梯形絲制造的契形網，更長的磨損失效周期
u 帶最小網隙a=0.05mm
u 針對物料與工況，選擇合適的材料：304、316L、2205、C22、C276
u 梯形絲硬化處理具有更好的耐磨性
LWL Wedge-shaped filtering net
u Wedge-shaped net made of trapezoidal wire containing a straight-line "b", resulting in a longer wear-out-failure period
u With minimum gap/clearance("a")of 0.05mm
u Select the most suitable material for the net depends on the material to be filtered and working conditions: 304、316L、2205、 C22、C276.
u Harden treated trapezoidal wire with better abrasive resistance
差速器
u 擺線針輪差速器
u 行星齒輪差速器
u 液壓差速器
Differential mechanism
u Cycloid pin wheel differential
u Satellite differential
u hydraulic differential
進料裝置
u 帶反沖進料管
適用于在管道中易堵塞的物料，在管路堵塞時反沖疏通
u 螺旋進料裝置
適用于固相濃度較高、流動性較差的物料
feeder unit
u Feeder pipe with backflush function
Applicable for material easily getting blocked
u screw feeding device
Applicable for material of poor fluidity and high solid concentration