工作原理
LWL臥式螺旋卸料過濾離心機(jī)，懸浮液通過進(jìn)料管進(jìn)入轉(zhuǎn)鼓與螺旋之間的過濾腔，從轉(zhuǎn)鼓錐底處進(jìn)入，在離心力作用下，料漿中的液相通過轉(zhuǎn)鼓內(nèi)側(cè)的濾網(wǎng)濾出，固相則被截留在轉(zhuǎn)鼓內(nèi)，同時(shí)固相在離心力和螺旋與轉(zhuǎn)鼓的差速作用下，從轉(zhuǎn)鼓小端向大端運(yùn)動(dòng)。隨著轉(zhuǎn)鼓回轉(zhuǎn)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(zhuǎn)鼓時(shí)達(dá)到最小的含濕率，實(shí)現(xiàn)固液相自動(dòng)連續(xù)的分離。
配置洗滌管，可在過濾的后段對(duì)濾餅進(jìn)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(duì)于易產(chǎn)生二次結(jié)晶的物料，可以配置蒸汽管，按設(shè)置的清洗周期對(duì)內(nèi)腔的結(jié)晶進(jìn)行高溫清洗。
LWL臥式螺旋卸料過濾離心機(jī)因其連續(xù)過濾的特性，生產(chǎn)效率高，連續(xù)自動(dòng)進(jìn)出料，對(duì)于適當(dāng)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(jié)構(gòu)簡圖
LWL Structure diagram
技術(shù)參數(shù) Technical parameter
主要特性
u 轉(zhuǎn)鼓錐角可按工況選擇20或40度
u 過濾網(wǎng)可選擇金屬板網(wǎng)或契形網(wǎng)
u 變頻控制，轉(zhuǎn)鼓轉(zhuǎn)速無級(jí)調(diào)整
u 多種潤滑方式：脂潤滑(標(biāo)配)、噴油潤滑、油氣潤滑
u 全自動(dòng)加油裝置
u 高精度轉(zhuǎn)鼓(數(shù)控加工、高精度平衡)，高分離因數(shù)，提高分離效率
u 設(shè)置主軸封，有效防止竄料
u 聯(lián)組傳動(dòng)帶
u 測(cè)速傳感器
u 自動(dòng)清洗程序：進(jìn)料管清洗、洗滌管清洗、轉(zhuǎn)鼓外側(cè)清洗、機(jī)蓋內(nèi)表面清洗、出料斗清洗
u 系統(tǒng)全密閉，滿足清潔生產(chǎn)要求
u 多重保護(hù)：過振動(dòng)保護(hù)，開蓋保護(hù)，電機(jī)過載保護(hù)，氮?dú)獗Ｗo(hù)，靜電接地保護(hù)，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(zhuǎn)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(duì)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(wǎng)
u 帶直邊b的梯形絲制造的契形網(wǎng)，更長的磨損失效周期
u 帶最小網(wǎng)隙a=0.05mm
u 針對(duì)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(jìn)料裝置
u 帶反沖進(jìn)料管
適用于在管道中易堵塞的物料，在管路堵塞時(shí)反沖疏通
u 螺旋進(jìn)料裝置
適用于固相濃度較高、流動(dòng)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