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基于超聲波輔助分離與智能調節的污泥濃縮裝置的制作方法

文(wen)檔(dang)序號:12570451閱(yue)讀(du):666來源:國知局

本發明(ming)涉及環保設備技(ji)術領域,特別涉及污(wu)泥濃(nong)縮處理裝(zhuang)置。



背景技術:

城(cheng)市污(wu)(wu)(wu)(wu)水(shui)處理(li)過(guo)程中,給水(shui)凈化水(shui)處理(li)所產生的(de)污(wu)(wu)(wu)(wu)泥(ni)(ni)含(han)水(shui)率一(yi)般(ban)為(wei)(wei)99.3%~99.7%,活性污(wu)(wu)(wu)(wu)泥(ni)(ni)一(yi)般(ban)為(wei)(wei)99.2%~99.6%,混合污(wu)(wu)(wu)(wu)泥(ni)(ni)一(yi)般(ban)為(wei)(wei)97%~98%。。城(cheng)市污(wu)(wu)(wu)(wu)泥(ni)(ni)的(de)特(te)點是(shi)固(gu)體物體少水(shui)分大,為(wei)(wei)此,污(wu)(wu)(wu)(wu)泥(ni)(ni)脫水(shui)前(qian)需(xu)要經過(guo)濃縮(suo)處理(li),以降低污(wu)(wu)(wu)(wu)泥(ni)(ni)的(de)含(han)水(shui)率,使污(wu)(wu)(wu)(wu)泥(ni)(ni)體積減(jian)少便于污(wu)(wu)(wu)(wu)泥(ni)(ni)的(de)脫水(shui)處理(li)。

傳(chuan)統的(de)污(wu)泥(ni)(ni)濃(nong)(nong)(nong)(nong)縮(suo)(suo)方式可分(fen)為(wei)重力(li)濃(nong)(nong)(nong)(nong)縮(suo)(suo)、氣浮(fu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)和(he)離(li)心(xin)濃(nong)(nong)(nong)(nong)縮(suo)(suo)等三種方式。重力(li)濃(nong)(nong)(nong)(nong)縮(suo)(suo)是利(li)用沉降(jiang)原理濃(nong)(nong)(nong)(nong)縮(suo)(suo)污(wu)泥(ni)(ni),分(fen)為(wei)間隙式和(he)連(lian)續(xu)式;氣浮(fu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)是細小的(de)汽(qi)泡(pao)使(shi)污(wu)泥(ni)(ni)顆(ke)粒(li)的(de)密度(du)(du)小于水(shui)(shui)而上浮(fu),并得到濃(nong)(nong)(nong)(nong)縮(suo)(suo);離(li)心(xin)濃(nong)(nong)(nong)(nong)縮(suo)(suo)是利(li)用污(wu)泥(ni)(ni)中固相、液(ye)相的(de)密度(du)(du)不同,在高速(su)旋轉(zhuan)中受到不同的(de)離(li)心(xin)力(li)而使(shi)兩(liang)者分(fen)離(li),達到濃(nong)(nong)(nong)(nong)縮(suo)(suo)的(de)目的(de)。現有的(de)污(wu)泥(ni)(ni)離(li)心(xin)濃(nong)(nong)(nong)(nong)縮(suo)(suo)處理裝置(zhi)中,污(wu)泥(ni)(ni)水(shui)(shui)經過(guo)攪拌(ban)裝置(zhi)攪拌(ban)后(hou)(hou)再濃(nong)(nong)(nong)(nong)縮(suo)(suo)排(pai)出,過(guo)濾后(hou)(hou)的(de)水(shui)(shui)自然溢(yi)流排(pai)出。濃(nong)(nong)(nong)(nong)縮(suo)(suo)污(wu)泥(ni)(ni)及沉淀后(hou)(hou)的(de)水(shui)(shui)自然排(pai)出,其排(pai)出效(xiao)率低(di),污(wu)泥(ni)(ni)濃(nong)(nong)(nong)(nong)縮(suo)(suo)速(su)度(du)(du)慢,整(zheng)個(ge)濃(nong)(nong)(nong)(nong)縮(suo)(suo)處理裝置(zhi)的(de)效(xiao)率較低(di)。



技術實現要素:

本申(shen)請人針對現有(you)技術的(de)上述(shu)缺點,進行研(yan)究和改(gai)進,提(ti)供一種基(ji)于超聲(sheng)波輔(fu)助分離與智能調節的(de)污(wu)泥濃縮(suo)(suo)裝置,其(qi)采用上下(xia)往復(fu)壓(ya)板結(jie)構,加(jia)速(su)污(wu)泥濃縮(suo)(suo)過(guo)程,大大提(ti)高污(wu)泥處理效率。

為了解決上述(shu)問題(ti),本發明采用(yong)如下方案:

一種(zhong)基于(yu)超聲(sheng)(sheng)波(bo)輔助分離與(yu)(yu)智能(neng)調節(jie)的(de)(de)(de)(de)污(wu)泥濃(nong)(nong)(nong)(nong)縮(suo)(suo)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi),包(bao)括(kuo)濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti),濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)的(de)(de)(de)(de)頂部(bu)(bu)(bu)設(she)(she)有(you)(you)(you)進料(liao)管及出(chu)水管,其底部(bu)(bu)(bu)設(she)(she)置(zhi)有(you)(you)(you)污(wu)泥排(pai)出(chu)口;濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)的(de)(de)(de)(de)中(zhong)心設(she)(she)有(you)(you)(you)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)筒(tong)(tong)(tong)體(ti)(ti),攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)筒(tong)(tong)(tong)體(ti)(ti)中(zhong)安裝(zhuang)(zhuang)(zhuang)(zhuang)有(you)(you)(you)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi),所(suo)述(shu)(shu)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)包(bao)括(kuo)中(zhong)心攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)軸(zhou)、設(she)(she)置(zhi)于(yu)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)筒(tong)(tong)(tong)體(ti)(ti)頂部(bu)(bu)(bu)并與(yu)(yu)中(zhong)心攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)軸(zhou)連(lian)(lian)接(jie)的(de)(de)(de)(de)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)電機,中(zhong)心攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)軸(zhou)上(shang)帶有(you)(you)(you)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)葉片,所(suo)述(shu)(shu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)中(zhong)設(she)(she)置(zhi)有(you)(you)(you)套置(zhi)于(yu)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)筒(tong)(tong)(tong)體(ti)(ti)外壁的(de)(de)(de)(de)升降(jiang)(jiang)(jiang)盤,升降(jiang)(jiang)(jiang)盤上(shang)均布有(you)(you)(you)過濾孔,升降(jiang)(jiang)(jiang)盤通(tong)(tong)過連(lian)(lian)桿與(yu)(yu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)頂部(bu)(bu)(bu)的(de)(de)(de)(de)凸(tu)輪驅動(dong)(dong)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)連(lian)(lian)接(jie),連(lian)(lian)桿與(yu)(yu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)的(de)(de)(de)(de)頂部(bu)(bu)(bu)之間安裝(zhuang)(zhuang)(zhuang)(zhuang)有(you)(you)(you)彈簧(huang);所(suo)述(shu)(shu)凸(tu)輪驅動(dong)(dong)裝(zhuang)(zhuang)(zhuang)(zhuang)置(zhi)包(bao)括(kuo)與(yu)(yu)連(lian)(lian)桿上(shang)端(duan)滾輪滾動(dong)(dong)觸接(jie)的(de)(de)(de)(de)凸(tu)輪,凸(tu)輪由升降(jiang)(jiang)(jiang)電機驅動(dong)(dong);所(suo)述(shu)(shu)進料(liao)管上(shang)安裝(zhuang)(zhuang)(zhuang)(zhuang)有(you)(you)(you)流(liu)(liu)量(liang)檢測計,流(liu)(liu)量(liang)檢測計與(yu)(yu)升降(jiang)(jiang)(jiang)電機的(de)(de)(de)(de)控制(zhi)器電連(lian)(lian)接(jie),流(liu)(liu)量(liang)檢測計檢測進料(liao)管中(zhong)的(de)(de)(de)(de)流(liu)(liu)量(liang)信號通(tong)(tong)過控制(zhi)器控制(zhi)升降(jiang)(jiang)(jiang)電機的(de)(de)(de)(de)轉速;所(suo)述(shu)(shu)中(zhong)心攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)軸(zhou)為帶有(you)(you)(you)軸(zhou)向通(tong)(tong)孔,攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)(ban)葉片帶有(you)(you)(you)與(yu)(yu)所(suo)述(shu)(shu)軸(zhou)向通(tong)(tong)孔連(lian)(lian)通(tong)(tong)的(de)(de)(de)(de)中(zhong)空腔(qiang)(qiang),所(suo)述(shu)(shu)軸(zhou)向通(tong)(tong)孔及中(zhong)空腔(qiang)(qiang)中(zhong)安裝(zhuang)(zhuang)(zhuang)(zhuang)有(you)(you)(you)超聲(sheng)(sheng)波(bo)傳(chuan)導(dao)介(jie)質(zhi),超聲(sheng)(sheng)波(bo)傳(chuan)導(dao)介(jie)質(zhi)與(yu)(yu)超聲(sheng)(sheng)波(bo)發生器連(lian)(lian)接(jie),超聲(sheng)(sheng)波(bo)發生器位于(yu)濃(nong)(nong)(nong)(nong)縮(suo)(suo)沉降(jiang)(jiang)(jiang)筒(tong)(tong)(tong)體(ti)(ti)的(de)(de)(de)(de)頂部(bu)(bu)(bu)外側(ce)。

作為上述技術(shu)方案的(de)進一步改(gai)進:

所述(shu)攪(jiao)拌筒體(ti)的(de)外壁設置(zhi)有第(di)一豎直滑(hua)(hua)槽(cao),濃(nong)縮沉降筒體(ti)的(de)內(nei)壁設置(zhi)第(di)二豎直滑(hua)(hua)槽(cao),升降盤(pan)的(de)內(nei)外圈帶有滑(hua)(hua)動設置(zhi)于所示第(di)一豎直滑(hua)(hua)槽(cao)與第(di)二豎直滑(hua)(hua)槽(cao)中的(de)滑(hua)(hua)塊。

位于攪拌筒體的(de)下(xia)方設(she)置有濃(nong)縮過濾(lv)板,濃(nong)縮過濾(lv)板上帶(dai)有傾斜設(she)置的(de)壓縮孔。

本發(fa)明的技術效果(guo)在于:

本發(fa)明(ming)采用(yong)升降盤(pan)對污(wu)泥水的(de)輔助擠壓作(zuo)用(yong),利(li)于攪拌后的(de)污(wu)泥進一步得到分散(san),從而(er)利(li)于過(guo)濾排出和濃縮沉淀,提高(gao)(gao)濃縮處理效率(lv);采用(yong)流量檢測(ce)計(ji)實時檢測(ce)進料管(guan)的(de)流量,并根據流量信(xin)號(hao)控制(zhi)升降盤(pan)的(de)升降動作(zuo)頻(pin)率(lv),無需(xu)人為手動調節,其智能(neng)化高(gao)(gao)、節省人工成(cheng)本;采用(yong)超聲波分離式攪拌,大(da)大(da)加快了(le)污(wu)泥的(de)攪拌效率(lv)。

附圖說明

圖1為本(ben)發明的(de)結構示意圖。

圖中(zhong):1、濃縮(suo)沉降筒(tong)(tong)體(ti);2、攪(jiao)拌(ban)筒(tong)(tong)體(ti);201、第一(yi)豎(shu)(shu)直滑槽(cao);3、攪(jiao)拌(ban)電機(ji)(ji);4、污泥排出口;5、中(zhong)心攪(jiao)拌(ban)軸;6、攪(jiao)拌(ban)葉片;7、升降盤;701、過濾(lv)孔;702、滑塊;8、連桿;9、滾輪;10、凸輪;101、第二豎(shu)(shu)直滑槽(cao);11、升降電機(ji)(ji);12、進料(liao)管(guan);13、出水管(guan);14、濃縮(suo)過濾(lv)板;141、壓縮(suo)孔;15、彈簧(huang);16、流量檢測計;17、控(kong)制器;18、超聲波(bo)(bo)發(fa)生器;19、超聲波(bo)(bo)傳(chuan)導介質。

具體實施方式

下面結合附(fu)圖對本(ben)發明的具體(ti)實施(shi)方(fang)式作進一(yi)步說明。

如圖(tu)1所示,本實施例的(de)(de)基(ji)于(yu)(yu)超聲(sheng)波輔助分離與智(zhi)能調(diao)節的(de)(de)污泥濃(nong)(nong)(nong)縮(suo)裝(zhuang)(zhuang)(zhuang)置,包括濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1,濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1的(de)(de)頂(ding)部(bu)設(she)有進(jin)(jin)(jin)料管(guan)12及(ji)出水管(guan)13,其底部(bu)設(she)置有污泥排出口4;濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1的(de)(de)中(zhong)心(xin)(xin)(xin)設(she)有攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)筒體2,攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)筒體2中(zhong)安(an)(an)(an)裝(zhuang)(zhuang)(zhuang)有攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)裝(zhuang)(zhuang)(zhuang)置,攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)裝(zhuang)(zhuang)(zhuang)置包括中(zhong)心(xin)(xin)(xin)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)軸5、設(she)置于(yu)(yu)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)筒體2頂(ding)部(bu)并與中(zhong)心(xin)(xin)(xin)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)軸5連(lian)接(jie)(jie)(jie)的(de)(de)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)電(dian)機(ji)3,中(zhong)心(xin)(xin)(xin)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)軸5上(shang)(shang)帶有攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)葉片6,濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1中(zhong)設(she)置有套置于(yu)(yu)攪(jiao)(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)筒體2外(wai)壁的(de)(de)升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)盤(pan)7,升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)盤(pan)7上(shang)(shang)均布有過濾孔701,升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)盤(pan)7通過連(lian)桿8與濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1頂(ding)部(bu)的(de)(de)凸輪驅動(dong)(dong)裝(zhuang)(zhuang)(zhuang)置連(lian)接(jie)(jie)(jie),連(lian)桿8與濃(nong)(nong)(nong)縮(suo)沉(chen)(chen)降(jiang)(jiang)筒體1的(de)(de)頂(ding)部(bu)之間(jian)安(an)(an)(an)裝(zhuang)(zhuang)(zhuang)有彈簧15;凸輪驅動(dong)(dong)裝(zhuang)(zhuang)(zhuang)置包括與連(lian)桿8上(shang)(shang)端滾輪9滾動(dong)(dong)觸接(jie)(jie)(jie)的(de)(de)凸輪10,凸輪10由升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)電(dian)機(ji)11驅動(dong)(dong)。進(jin)(jin)(jin)料管(guan)12上(shang)(shang)安(an)(an)(an)裝(zhuang)(zhuang)(zhuang)有流(liu)(liu)量檢測(ce)(ce)計(ji)16,流(liu)(liu)量檢測(ce)(ce)計(ji)16與升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)電(dian)機(ji)11的(de)(de)控制(zhi)(zhi)器17電(dian)連(lian)接(jie)(jie)(jie),流(liu)(liu)量檢測(ce)(ce)計(ji)16檢測(ce)(ce)進(jin)(jin)(jin)料管(guan)12中(zhong)的(de)(de)流(liu)(liu)量信號通過控制(zhi)(zhi)器17控制(zhi)(zhi)升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)電(dian)機(ji)11的(de)(de)轉(zhuan)速,實現對升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)盤(pan)7的(de)(de)升(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)頻(pin)率進(jin)(jin)(jin)行實時控制(zhi)(zhi),無需人為主動(dong)(dong)調(diao)節,其智(zhi)能化高(gao),節省人力。

本發明中(zhong)(zhong),中(zhong)(zhong)心攪拌軸(zhou)(zhou)(zhou)5為帶有(you)軸(zhou)(zhou)(zhou)向(xiang)通(tong)孔,攪拌葉(xie)片(pian)6帶有(you)與所(suo)述(shu)(shu)軸(zhou)(zhou)(zhou)向(xiang)通(tong)孔連通(tong)的中(zhong)(zhong)空腔,所(suo)述(shu)(shu)軸(zhou)(zhou)(zhou)向(xiang)通(tong)孔及(ji)中(zhong)(zhong)空腔中(zhong)(zhong)安裝有(you)超(chao)聲(sheng)波(bo)(bo)(bo)傳導(dao)(dao)介質19,超(chao)聲(sheng)波(bo)(bo)(bo)傳導(dao)(dao)介質19與超(chao)聲(sheng)波(bo)(bo)(bo)發生(sheng)(sheng) 器18連接,超(chao)聲(sheng)波(bo)(bo)(bo)發生(sheng)(sheng)器18位(wei)于濃(nong)縮(suo)沉降(jiang)筒體1的頂部外側(ce)。超(chao)聲(sheng)波(bo)(bo)(bo)發生(sheng)(sheng)器18產生(sheng)(sheng)的超(chao)聲(sheng)波(bo)(bo)(bo)通(tong)過超(chao)聲(sheng)波(bo)(bo)(bo)傳導(dao)(dao)介質19導(dao)(dao)到中(zhong)(zhong)心攪拌軸(zhou)(zhou)(zhou)5及(ji)攪拌葉(xie)片(pian)6上,攪拌的同時通(tong)過超(chao)聲(sheng)波(bo)(bo)(bo)對污泥進行穿透(tou)式輔助分散分離,大(da)大(da)提高了攪拌效(xiao)率(lv)及(ji)效(xiao)果(guo)。

進一(yi)(yi)步地,如(ru)圖1所(suo)示(shi),所(suo)示(shi)攪(jiao)拌筒體2的(de)外(wai)(wai)壁設置(zhi)(zhi)有(you)第(di)(di)一(yi)(yi)豎直(zhi)(zhi)滑(hua)槽201,濃縮沉降(jiang)筒體1的(de)內壁設置(zhi)(zhi)第(di)(di)二豎直(zhi)(zhi)滑(hua)槽101,升(sheng)降(jiang)盤7的(de)內外(wai)(wai)圈帶(dai)有(you)滑(hua)動設置(zhi)(zhi)于(yu)所(suo)示(shi)第(di)(di)一(yi)(yi)豎直(zhi)(zhi)滑(hua)槽201與(yu)第(di)(di)二豎直(zhi)(zhi)滑(hua)槽101中的(de)滑(hua)塊702。位(wei)于(yu)攪(jiao)拌筒體2的(de)下方設置(zhi)(zhi)有(you)濃縮過(guo)濾板14,濃縮過(guo)濾板14上帶(dai)有(you)傾斜設置(zhi)(zhi)的(de)壓縮孔141。

本(ben)發明中(zhong),經攪拌后的污(wu)泥(ni)在(zai)(zai)升(sheng)降(jiang)盤7的上下(xia)擠(ji)壓(ya)(ya)作(zuo)用下(xia),進一步得到分散,并(bing)在(zai)(zai)濃縮(suo)過濾板14的壓(ya)(ya)縮(suo)孔141導(dao)向作(zuo)用下(xia),不斷壓(ya)(ya)縮(suo)沉(chen)淀于濃縮(suo)沉(chen)降(jiang)筒體1的底部(bu)錐形(xing)腔(qiang)中(zhong);升(sheng)降(jiang)盤7上下(xia)運(yun)動時(shi),污(wu)泥(ni)水(shui)(shui)經過濾后從(cong)出水(shui)(shui)管13中(zhong)排出。

以上所(suo)(suo)(suo)舉實(shi)施(shi)例(li)為本(ben)(ben)發(fa)明(ming)的較佳實(shi)施(shi)方式,僅(jin)用來方便說明(ming)本(ben)(ben)發(fa)明(ming),并非對本(ben)(ben)發(fa)明(ming)作任何(he)形式上的限制,任何(he)所(suo)(suo)(suo)屬(shu)技術(shu)領域(yu)中具有(you)通常知識者,若在不脫離本(ben)(ben)發(fa)明(ming)所(suo)(suo)(suo)提技術(shu)特征的范圍(wei)內(nei),利用本(ben)(ben)發(fa)明(ming)所(suo)(suo)(suo)揭示技術(shu)內(nei)容所(suo)(suo)(suo)作出局部改動或修飾的等效實(shi)施(shi)例(li),并且未脫離本(ben)(ben)發(fa)明(ming)的技術(shu)特征內(nei)容,均仍屬(shu)于本(ben)(ben)發(fa)明(ming)技術(shu)特征的范圍(wei)內(nei)。

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