D973H電動蒸(zheng)汽蝶(die)(die)閥(fa)(fa)(fa)采用(yong)一(yi)個(ge)“U”型(xing)不銹(xiu)鋼(gang)密(mi)封(feng)(feng)圈，該精(jing)密(mi)的(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)(xing)密(mi)封(feng)(feng)圈與經(jing)過(guo)拋(pao)光的(de)(de)(de)(de)(de)(de)蝶(die)(die)板(ban)三(san)維(wei)(wei)偏(pian)心(xin)接觸(chu)。解決了傳統偏(pian)心(xin)蝶(die)(die)閥(fa)(fa)(fa)在(zai)啟(qi)閉(bi)0°～10°瞬間密(mi)封(feng)(feng)面(mian)(mian)仍處于滑動接觸(chu)摩擦(ca)的(de)(de)(de)(de)(de)(de)弊病,實現蝶(die)(die)板(ban)在(zai)開啟(qi)瞬間密(mi)封(feng)(feng)面(mian)(mian)即分(fen)離,關閉(bi)接觸(chu)即密(mi)封(feng)(feng)的(de)(de)(de)(de)(de)(de)效果,達(da)到延長使(shi)用(yong)壽命(ming)、密(mi)封(feng)(feng)性(xing)(xing)(xing)(xing)能較好(hao)的(de)(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)(de)。因此被(bei)地應用(yong)到介(jie)質(zhi)溫(wen)(wen)度≤550℃的(de)(de)(de)(de)(de)(de)冶金、電力、石(shi)油、化工(gong)、空氣、煤(mei)氣、可燃氣體以(yi)及給(gei)排水等腐蝕(shi)性(xing)(xing)(xing)(xing)介(jie)質(zhi)的(de)(de)(de)(de)(de)(de)管道上(shang)，是調(diao)節(jie)流(liu)量(liang)(liang)和截斷流(liu)體的(de)(de)(de)(de)(de)(de)較好(hao)裝置。產品特點1、該蝶(die)(die)閥(fa)(fa)(fa)結構簡單、緊(jin)湊、重(zhong)量(liang)(liang)輕、易于安裝和拆卸、維(wei)(wei)修方(fang)便(bian)；2、本(ben)(ben)蝶(die)(die)閥(fa)(fa)(fa)采用(yong)不銹(xiu)鋼(gang)“U”型(xing)密(mi)封(feng)(feng)圈，具有一(yi)定的(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)(xing)無(wu)論在(zai)高溫(wen)(wen)、低溫(wen)(wen)的(de)(de)(de)(de)(de)(de)情況下，它與蝶(die)(die)板(ban)均具有優良的(de)(de)(de)(de)(de)(de)密(mi)封(feng)(feng)性(xing)(xing)(xing)(xing)；3、本(ben)(ben)蝶(die)(die)閥(fa)(fa)(fa)的(de)(de)(de)(de)(de)(de)三(san)維(wei)(wei)偏(pian)心(xin)距，經(jing)過(guo)嚴格的(de)(de)(de)(de)(de)(de)計算，“U”型(xing)密(mi)封(feng)(feng)圈與蝶(die)(die)板(ban)幾乎無(wu)磨擦(ca)，使(shi)用(yong)壽命(ming)長，并(bing)具有越(yue)關越(yue)緊(jin)的(de)(de)(de)(de)(de)(de)功能；4、蝶(die)(die)板(ban)密(mi)封(feng)(feng)面(mian)(mian)采用(yong)堆焊鈷(gu)基硬質(zhi)合金，密(mi)封(feng)(feng)面(mian)(mian)耐(nai)磨損，使(shi)用(yong)壽命(ming)長；5、本(ben)(ben)蝶(die)(die)閥(fa)(fa)(fa)結構獨(du)特，“開關”只需轉動閥(fa)(fa)(fa)桿(gan)90°即可完成。操作靈活、方(fang)便(bian)、省力、不受介(jie)質(zhi)壓力的(de)(de)(de)(de)(de)(de)高低影響，密(mi)封(feng)(feng)性(xing)(xing)(xing)(xing)能可靠；6、耐(nai)高溫(wen)(wen)、耐(nai)低溫(wen)(wen)、耐(nai)腐蝕(shi)性(xing)(xing)(xing)(xing)。上(shang)海(hai)科耐(nai)迪閥(fa)(fa)(fa)門成套設(she)備有限(xian)公司為您提供(gong)蝶(die)(die)閥(fa)(fa)(fa)設(she)備，期(qi)待(dai)您的(de)(de)(de)(de)(de)(de)光臨(lin)！山(shan)東襯氟蝶(die)(die)閥(fa)(fa)(fa)多少錢

隨著防化(hua)學腐(fu)蝕(shi)的(de)(de)合(he)成(cheng)(cheng)橡(xiang)膠在電(dian)動蝶閥(fa)(fa)(fa)上(shang)的(de)(de)應用，電(dian)動蝶閥(fa)(fa)(fa)的(de)(de)性(xing)(xing)能(neng)得(de)以(yi)(yi)提高。由(you)(you)于(yu)合(he)成(cheng)(cheng)橡(xiang)膠具(ju)有耐(nai)腐(fu)蝕(shi)、抗沖蝕(shi)、尺(chi)寸(cun)(cun)穩(wen)定(ding)、回彈性(xing)(xing)好(hao)、易(yi)于(yu)成(cheng)(cheng)形(xing)、成(cheng)(cheng)本低廉等特點，并可以(yi)(yi)根(gen)據(ju)不(bu)同的(de)(de)使用要求(qiu)選擇(ze)不(bu)同性(xing)(xing)能(neng)的(de)(de)合(he)成(cheng)(cheng)橡(xiang)膠，以(yi)(yi)滿足電(dian)動蝶閥(fa)(fa)(fa)的(de)(de)使用工況條(tiao)件。由(you)(you)于(yu)聚(ju)四氟(fu)乙(yi)烯(PTFE)具(ju)有耐(nai)腐(fu)蝕(shi)性(xing)(xing)強、性(xing)(xing)能(neng)穩(wen)定(ding)、不(bu)易(yi)老化(hua)、摩擦(ca)系數低、易(yi)于(yu)成(cheng)(cheng)形(xing)、尺(chi)寸(cun)(cun)穩(wen)定(ding)，并且(qie)可以(yi)(yi)通過填(tian)充、添加適(shi)當的(de)(de)材料改善其綜(zong)合(he)性(xing)(xing)能(neng)，得(de)到強-度(du)更(geng)好(hao)、摩擦(ca)系數更(geng)低的(de)(de)蝶閥(fa)(fa)(fa)密(mi)(mi)封(feng)材料，克服了合(he)成(cheng)(cheng)橡(xiang)膠的(de)(de)局限性(xing)(xing)，因而(er)以(yi)(yi)聚(ju)四氟(fu)乙(yi)烯為例的(de)(de)高分子聚(ju)合(he)材料及其填(tian)充改性(xing)(xing)材料，在蝶閥(fa)(fa)(fa)上(shang)得(de)到了大(da)量的(de)(de)應用，從而(er)使蝶閥(fa)(fa)(fa)的(de)(de)性(xing)(xing)能(neng)得(de)到進一(yi)步的(de)(de)提高，制(zhi)造(zao)出(chu)了溫度(du)、壓(ya)力范圍(wei)更(geng)廣，密(mi)(mi)封(feng)性(xing)(xing)能(neng)可靠，使用壽命更(geng)長的(de)(de)蝶閥(fa)(fa)(fa)。山(shan)東襯氟(fu)蝶閥(fa)(fa)(fa)多少錢(qian)蝶閥(fa)(fa)(fa)設備(bei)，就選上(shang)海科耐(nai)迪閥(fa)(fa)(fa)門(men)成(cheng)(cheng)套設備(bei)有限公司(si)，用戶的(de)(de)信賴之(zhi)選，歡迎新老客戶來電(dian)！

D963H電動(dong)焊接蝶(die)(die)閥(fa)產品概述本公(gong)司(si)經營的(de)電動(dong)焊接蝶(die)(die)閥(fa)主(zhu)(zhu)要(yao)(yao)適(shi)用(yong)于高(gao)溫、高(gao)壓(ya)、防火、保(bao)溫等管(guan)道(dao)上作(zuo)啟(qi)閉或調(diao)節介(jie)質(zhi)之(zhi)用(yong)。D963H焊接式電動(dong)蝶(die)(die)閥(fa)其主(zhu)(zhu)要(yao)(yao)特(te)(te)點(dian)如(ru)下(xia)：1、結構緊湊、體(ti)積小、重量輕、操作(zuo)靈活、使用(yong)方便；2、采用(yong)三維偏心彈性(xing)或多層(ceng)次硬密(mi)封結構，其密(mi)封性(xing)能可靠達到零泄(xie)漏；3、此閥(fa)無法(fa)蘭，對(dui)管(guan)道(dao)和保(bao)溫包扎帶來很大方便和美(mei)觀；4、具有耐(nai)高(gao)溫、高(gao)壓(ya)、耐(nai)腐蝕、耐(nai)磨損等特(te)(te)點(dian)。電動(dong)焊接蝶(die)(die)閥(fa)主(zhu)(zhu)要(yao)(yao)技術參(can)(can)數(shu)(shu)閥(fa)體(ti)形(xing)式直(zhi)通(tong)鑄造(zao)閥(fa)公(gong)稱通(tong)徑DN80～2000mm公(gong)稱壓(ya)力(li)PN0.6、1.0、1.6、2.5、4.0MPa；ANSI150300LB；JIS102030K連接形(xing)式焊接式(GB1224、ANSIB16.25、DIN2559)壓(ya)蓋型式壓(ya)板壓(ya)緊式密(mi)封填料(liao)V型聚四氟乙(yi)烯(xi)填料(liao)、柔性(xing)石墨填料(liao)閥(fa)板形(xing)式垂直(zhi)板式(蝶(die)(die)形(xing))流(liu)量特(te)(te)性(xing)開關(guan)型(線性(xing))、調(diao)節型(近似等百分比(bi))三、電動(dong)焊接蝶(die)(die)閥(fa)執行器(qi)參(can)(can)數(shu)(shu)及特(te)(te)點(dian)執行器(qi)型號KNDZ、KND360F、KND-FZ、KND90F、KND-LQ,KNDQ型主(zhu)(zhu)要(yao)(yao)技術參(can)(can)數(shu)(shu)電源電壓(ya)：220V/50Hz、380V/50Hz、輸(shu)(shu)入信號：4-20mA或1-5V·DC、輸(shu)(shu)出(chu)信號：4-20mA·DC防護等級：相當IP67、隔爆標志：ExdⅡBT4、手操功(gong)能：手柄、手輪(lun)環境(jing)溫度(du)：-25～+70℃、環境(jing)濕(shi)度(du)：≤95%

電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)眼鏡閥(fa)(fa)(fa)(fa)(fa)又稱電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)盲(mang)(mang)板(ban)閥(fa)(fa)(fa)(fa)(fa)其主要是夾(jia)(jia)緊(jin)電(dian)(dian)機(ji)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)絲(si)桿(gan)作(zuo)逆時(shi)針(zhen)(zhen)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)，閥(fa)(fa)(fa)(fa)(fa)體(ti)松開到(dao)位(指(zhi)示(shi)燈(deng)顯示(shi))，驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)閘(zha)板(ban)作(zuo)逆時(shi)針(zhen)(zhen)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)到(dao)位，閘(zha)板(ban)關(guan)閉(bi)到(dao)位(指(zhi)示(shi)燈(deng)顯示(shi))，夾(jia)(jia)緊(jin)電(dian)(dian)機(ji)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)絲(si)桿(gan)作(zuo)順時(shi)針(zhen)(zhen)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)，閥(fa)(fa)(fa)(fa)(fa)體(ti)夾(jia)(jia)緊(jin)到(dao)位(指(zhi)示(shi)燈(deng)顯示(shi))完(wan)成(cheng)(cheng)閥(fa)(fa)(fa)(fa)(fa)門(men)由開啟到(dao)關(guan)閉(bi)的全(quan)過(guo)(guo)程。結構(gou)特(te)點(dian)：1、本(ben)(ben)閥(fa)(fa)(fa)(fa)(fa)由閥(fa)(fa)(fa)(fa)(fa)門(men)本(ben)(ben)體(ti)、驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)裝(zhuang)(zhuang)(zhuang)置(zhi)，夾(jia)(jia)緊(jin)裝(zhuang)(zhuang)(zhuang)置(zhi)等組成(cheng)(cheng)。電(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)盲(mang)(mang)板(ban)閥(fa)(fa)(fa)(fa)(fa)2、閥(fa)(fa)(fa)(fa)(fa)門(men)本(ben)(ben)體(ti)采(cai)(cai)用三(san)點(dian)式結構(gou)、結構(gou)緊(jin)湊，整(zheng)體(ti)剛性好，重量好。3、閥(fa)(fa)(fa)(fa)(fa)體(ti)、閥(fa)(fa)(fa)(fa)(fa)板(ban)密封(feng)(feng)副采(cai)(cai)用不銹鋼與橡膠組成(cheng)(cheng)的柔性密封(feng)(feng)副，密封(feng)(feng)可(ke)(ke)靠，密封(feng)(feng)圈采(cai)(cai)用氟橡膠，耐(nai)高(gao)溫，使用壽(shou)命(ming)長。4、夾(jia)(jia)緊(jin)機(ji)構(gou)采(cai)(cai)用絲(si)桿(gan)螺(luo)母式，夾(jia)(jia)緊(jin)、松開動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)迅速(su)，自鎖性好。5、采(cai)(cai)用防爆型(xing)電(dian)(dian)機(ji)，無論在室內還(huan)是室外，均能保證閥(fa)(fa)(fa)(fa)(fa)門(men)安全(quan)可(ke)(ke)靠運輸動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)。6、本(ben)(ben)盲(mang)(mang)板(ban)閥(fa)(fa)(fa)(fa)(fa)可(ke)(ke)現場手(shou)動(dong)(dong)(dong)(dong)(dong)(dong)操作(zuo)，也可(ke)(ke)遠(yuan)距離(li)順控。7、本(ben)(ben)盲(mang)(mang)板(ban)閥(fa)(fa)(fa)(fa)(fa)也可(ke)(ke)單獨設(she)計電(dian)(dian)氣(qi)控制箱(xiang)操作(zuo)控制裝(zhuang)(zhuang)(zhuang)置(zhi)。動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)原(yuan)理1、由閥(fa)(fa)(fa)(fa)(fa)開啟到(dao)閥(fa)(fa)(fa)(fa)(fa)關(guan)閉(bi)2、閥(fa)(fa)(fa)(fa)(fa)門(men)由關(guan)閉(bi)到(dao)開啟夾(jia)(jia)緊(jin)電(dian)(dian)機(ji)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)絲(si)桿(gan)作(zuo)逆時(shi)針(zhen)(zhen)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)，閥(fa)(fa)(fa)(fa)(fa)體(ti)松開到(dao)位(指(zhi)標燈(deng)顯示(shi))，驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)動(dong)(dong)(dong)(dong)(dong)(dong)作(zuo)，帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)閘(zha)板(ban)作(zuo)順時(shi)針(zhen)(zhen)轉(zhuan)動(dong)(dong)(dong)(dong)(dong)(dong)，閘(zha)板(ban)開啟支位，(指(zhi)示(shi)燈(deng)顯示(shi))完(wan)成(cheng)(cheng)閥(fa)(fa)(fa)(fa)(fa)門(men)由關(guan)閉(bi)到(dao)開啟的全(quan)過(guo)(guo)程。上海科耐(nai)迪閥(fa)(fa)(fa)(fa)(fa)門(men)成(cheng)(cheng)套設(she)備有限公司蝶閥(fa)(fa)(fa)(fa)(fa)設(she)備設(she)備值得(de)放心。

防(fang)(fang)爆(bao)(bao)電(dian)(dian)動(dong)蝶(die)(die)閥(fa)(fa)(fa)有(you)法(fa)蘭蝶(die)(die)閥(fa)(fa)(fa)和(he)防(fang)(fang)爆(bao)(bao)電(dian)(dian)動(dong)執行器組合而成。是(shi)一(yi)種專門應用(yong)于易燃易爆(bao)(bao)的(de)場(chang)合中(zhong)(zhong)。氣(qi)(qi)體(ti)、液體(ti)或粉(fen)塵(chen)等(deng)介質的(de)防(fang)(fang)爆(bao)(bao)閥(fa)(fa)(fa)門，設備(bei)(bei)均經過防(fang)(fang)靜電(dian)(dian)處理，防(fang)(fang)護等(deng)級(ji)一(yi)般在IP65/IP67，防(fang)(fang)爆(bao)(bao)等(deng)級(ji)為(wei)ExdIIBT4和(he)CT4防(fang)(fang)爆(bao)(bao)標志。根據介質溫度高低(di)的(de)不同而選用(yong)不同的(de)密(mi)封(feng)形式。大(da)致分為(wei)金(jin)屬硬密(mi)封(feng)和(he)橡膠軟密(mi)封(feng)結(jie)構，也(ye)可(ke)根據工況(kuang)的(de)需要選擇開(kai)關型和(he)調(diao)(diao)節(jie)(jie)型的(de)電(dian)(dian)動(dong)防(fang)(fang)爆(bao)(bao)蝶(die)(die)閥(fa)(fa)(fa)（輸入模擬量信號和(he)電(dian)(dian)流(liu)信號來控(kong)(kong)制(zhi)(zhi)調(diao)(diao)節(jie)(jie)流(liu)量的(de)大(da)小）電(dian)(dian)動(dong)防(fang)(fang)爆(bao)(bao)蝶(die)(die)閥(fa)(fa)(fa)在現代工業(ye)自(zi)動(dong)化(hua)(hua)控(kong)(kong)制(zhi)(zhi)領域中(zhong)(zhong)起到(dao)不可(ke)缺少的(de)作用(yong)。電(dian)(dian)動(dong)防(fang)(fang)爆(bao)(bao)蝶(die)(die)閥(fa)(fa)(fa)應用(yong)于食品、環(huan)保、輕工、石(shi)油。化(hua)(hua)工、教學設備(bei)(bei)、造紙、電(dian)(dian)力(li)等(deng)行業(ye)的(de)工業(ye)自(zi)動(dong)化(hua)(hua)控(kong)(kong)制(zhi)(zhi)中(zhong)(zhong)等(deng)給排水、氣(qi)(qi)體(ti)官道上作調(diao)(diao)節(jie)(jie)流(liu)量和(he)控(kong)(kong)制(zhi)(zhi)流(liu)體(ti)的(de)作用(yong)。上海科耐迪閥(fa)(fa)(fa)門成套設備(bei)(bei)有(you)限公司致力(li)于提供蝶(die)(die)閥(fa)(fa)(fa)設備(bei)(bei)，歡迎您(nin)的(de)來電(dian)(dian)哦！山東襯氟蝶(die)(die)閥(fa)(fa)(fa)多少錢

上海(hai)科(ke)耐迪閥門成套設(she)備有限公司為您(nin)提供蝶(die)(die)閥設(she)備，有想(xiang)法可(ke)以來我司咨(zi)詢！山東襯氟蝶(die)(die)閥多少錢

D943H開關(guan)(guan)型(xing)(xing)(xing)電(dian)動蝶(die)(die)閥(fa)D943Y-64C結構(gou)及(ji)性(xing)(xing)(xing)能(neng)(neng)(neng)簡介三偏(pian)心(xin)硬密(mi)封(feng)蝶(die)(die)閥(fa)系列產品，長(chang)壽命、節(jie)能(neng)(neng)(neng)型(xing)(xing)(xing)蝶(die)(die)閥(fa)。產品符合標(biao)準(zhun)JB/T8527－97(金屬(shu)密(mi)封(feng)蝶(die)(die)閥(fa))，GB／T13927－92(通用(yong)(yong)(yong)(yong)閥(fa)門(men)(men)壓(ya)力試(shi)驗)標(biao)準(zhun)及(ji)閥(fa)門(men)(men)其它相關(guan)(guan)標(biao)準(zhun)的規定。本產品由閥(fa)體(ti)、蝶(die)(die)板、密(mi)封(feng)圈、傳動機構(gou)等(deng)主(zhu)要(yao)部(bu)件組成。其結構(gou)采用(yong)(yong)(yong)(yong)三維偏(pian)心(xin)原理(li)設計(ji)，彈性(xing)(xing)(xing)密(mi)封(feng)和(he)硬軟(ruan)多層密(mi)封(feng)兼容的加工(gong)新工(gong)藝(yi)，使(shi)(shi)蝶(die)(die)閥(fa)在運行工(gong)作(zuo)時，減少其扭矩力，達到省(sheng)(sheng)力，節(jie)能(neng)(neng)(neng)之功能(neng)(neng)(neng)。從而確保(bao)整體(ti)的抗腐蝕．耐(nai)(nai)高溫．,抗靡損(sun)的可靠性(xing)(xing)(xing)。開關(guan)(guan)型(xing)(xing)(xing)電(dian)動蝶(die)(die)閥(fa)D943Y-25C主(zhu)要(yao)性(xing)(xing)(xing)能(neng)(neng)(neng)特(te)(te)點是：1．結構(gou)獨(du)特(te)(te)、型(xing)(xing)(xing)小輕便(bian)、操作(zuo)靈活、省(sheng)(sheng)力、方便(bian)；2．密(mi)封(feng)可靠，可達到氣密(mi)封(feng)無泄漏；3．流量特(te)(te)性(xing)(xing)(xing)趨于直線調節(jie)性(xing)(xing)(xing)有；4．采用(yong)(yong)(yong)(yong)三偏(pian)心(xin)原理(li)，使(shi)(shi)密(mi)封(feng)面(mian)近似零靡損(sun)延長(chang)了閥(fa)門(men)(men)的使(shi)(shi)用(yong)(yong)(yong)(yong)壽命；5．應用(yong)(yong)(yong)(yong)范(fan)圍廣。如：可用(yong)(yong)(yong)(yong)于水、蒸氣、油(you)品、空氣、煤(mei)氣等(deng)介質(zhi)。6．適用(yong)(yong)(yong)(yong)不同溫度(du)及(ji)6.4MPa以(yi)下的壓(ya)力等(deng)級(ji)，耐(nai)(nai)腐蝕等(deng)各種介質(zhi)管(guan)線。開關(guan)(guan)型(xing)(xing)(xing)電(dian)動蝶(die)(die)閥(fa)D943Y-25C用(yong)(yong)(yong)(yong)途本蝶(die)(die)閥(fa)適用(yong)(yong)(yong)(yong)于食品．醫(yi)藥．石油(you)化工(gong)．電(dian)廠(chang)．鋼廠(chang)．工(gong)業環保(bao)水處理(li)及(ji)高層建(jian)筑．供排水管(guan)道(dao)上作(zuo)調節(jie)流量和(he)截斷(duan)流體(ti)較好裝(zhuang)置(zhi)。山(shan)東襯氟(fu)蝶(die)(die)閥(fa)多少錢

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