工作原理

        LWLZ臥式螺旋濃縮過濾組合式離心機(jī)，物料先進(jìn)入沉降轉(zhuǎn)鼓中，通過沉降原理將物料先進(jìn)行沉降濃縮后，再進(jìn)入過濾轉(zhuǎn)鼓進(jìn)行過濾分離和洗滌。

        懸浮液通過進(jìn)料管進(jìn)入沉降轉(zhuǎn)鼓，從轉(zhuǎn)鼓大端處進(jìn)入，在離心力作用下，料漿中固相沉降在轉(zhuǎn)鼓壁上并在螺旋的作用下向小端移動(dòng)，液相通過轉(zhuǎn)鼓大端的溢流孔排出，濾餅在向小端移動(dòng)的過程中被壓榨脫液后進(jìn)入過濾轉(zhuǎn)鼓，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。

         LWLZ臥式螺旋濃縮過濾組合式離心機(jī)因其先濃縮再過濾的特性，生產(chǎn)效率高，自動(dòng)化程度高，主要適用于大處理量、低固相率、液相中含有膠質(zhì)的物料。

Operating principle

Working principle of LWLZ screw thickening and filtration centrifuge

The suspension will be fed into sedimentation rotor drum firstly for sedimentation and thickening before it' s transferred to the filtration rotor drum for filtration separation and rinsing.

The suspension will be fed in via the larger end of the sedimentation rotor drum. Solid content of which will settle down and lie on inner wall of the rotor drum, which will be conveyed to the smaller end of the drum under effect of screw; meanwhile, the liquid content of which will be discharged via overflow port at larger end of the drum. The filtering cake will be compressed and dehydrated as it' s conveyed from smaller end of the drum to the larger end.

The centrifugal force increases as the turning radius of the drum increases, reducing moisture content of the solid (which is high at beginning) as far as possible and 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, the better effect of rinsing and the lower consumption of detergent.

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.

LWLZ horizontal decanter is mainly applicable for processing bulk material with lower solid content and liquid containing gel.

LWLZ結(jié)構(gòu)簡圖

LWLZ 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

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