美國進口VICKERS威格士齒輪泵 采用液壓平橫的子母葉片的結構設計,減少了葉片對定子的沖擊,在較高的工作壓力和高轉速下,性能更穩定,壽命更長。子母葉片結構本身具有低噪音的特性。12葉片的設計、流量脈動很小,噪音更低。多排量的選擇。以及泵芯的插裝式結構,使用戶使用更靈活,維修更方便。采用浮動側打結構,可以自動補償間隙,達到壓力平衡,實現高轉速高壓力的*性能。側板采用雙金屬繞性材料,極大提高抗咬全性能,使用起來效果更高。齒輪泵是依靠泵缸與嚙合齒輪間所形成的工作容積變化和移動來輸送液體或使之增壓的回轉泵。由兩個齒輪、泵體與前后蓋組成兩個封閉空間,當齒輪轉動時,齒輪脫開側的空間的體積從小變大,形成真空,將液體吸入,齒輪嚙合側的空間的體積從大變小,而將液體擠入管路中去。吸入腔與排出腔是靠兩個齒輪的嚙合線來隔開的。齒輪泵的排出口的壓力*取決于泵出口處阻力的大小。齒輪泵的概念是很簡單的,即它的zui基本形式就是兩個尺寸相同的齒輪在一個緊密配合的殼體內相互嚙合旋轉,這個殼體的內部類似“8”字形,兩個齒輪裝在里面,齒輪的外徑及兩側與殼體緊密配合。來自于擠出機的物料在吸入口進入兩個齒輪中間,并充滿這一空間,隨著齒的旋轉沿殼體運動,zui后在兩齒嚙合時排出。 在術語上講,齒輪泵也叫正排量裝置,即像一個缸筒內的活塞,當一個齒進入另一個齒的流體空間時,液體就被機械性地擠排出來。因為液體是不可壓縮的,所以液體和齒就不能在同一時間占據同一空間,這樣,液體就被排除了。由于齒的不斷嚙合,這一現象就連續在發生,因而也就在泵的出口提供了一個連續排除量,泵每轉一轉,排出的量是一樣的。隨著驅動軸的不間斷地旋轉,泵也就不間斷地排出流體。泵的流量直接與泵的轉速有關。 實際上,在泵內有很少量的流體損失,這使泵的運行效率不能達到*,因為這些流體被用來潤滑軸承及齒輪兩側,而泵體也絕不可能無間隙配合,故不能使流體*地從出口排出,所以少量的流體損失是必然的。然而泵還是可以良好地運行,對大多數擠出物料來說,仍可以達到93%~98%的效率。 對于粘度或密度在工藝中有變化的流體,這種泵不會受到太多影響。如果有一個阻尼器,比如在排出口側放一個濾網或一個限制器,泵則會推動流體通過它們。如果這個阻尼器在工作中變化,亦即如果濾網變臟、堵塞了,或限制器的背壓升高了,則泵仍將保持恒定的流量,直至達到裝置中zui弱的部件的機械極限(通常裝有一個扭矩限制器)。對于一臺泵的轉速,實際上是有限制的,這主要取決于工藝流體,如果傳送的是油類,泵則能以很高的速度轉動,但當流體是一種高粘度的聚合物熔體時,這種限制就會大幅度降低。推動高粘流體進入吸入口一側的兩齒空間是非常重要的,如果這一空間沒有填充滿,則泵就不能排出準確的流量,所以PV值(壓力×流速)也是另外一個限制因素,而且是一個工藝變量。由于這些限制,齒輪泵制造商將提供一系列產品,即不同的規格及排量(每轉一周所排出的量)。這些泵將與具體的應用工藝相配合,以使系統能力及價格達到*。 PEP-II泵的齒輪與軸共為一體,采用通體淬硬工藝,可獲得更長的工作壽命。“D”型軸承結合了強制潤滑機理,使聚合物經軸承表面,并返回到泵的進口側,以確保旋轉軸的有效潤滑。這一特性減少了聚合物滯留并降解的可能性。精密加工的泵體可使“D”型軸承與齒輪軸精確配合,確保齒輪軸不偏心,以防齒輪磨損。Parkool密封結構與聚四氟唇型密封共同構成水冷密封。這種密封實際上并不接觸軸的表面,它的密封原理是將聚合物冷卻到半熔融狀態而形成自密封。也可以采用Rheoseal密封,它在軸封內表上加工有反向螺旋槽,可使聚合物被反壓回到進口。為便于安裝,制造商設計了一個環形螺栓安裝面,以使與其它設備的法蘭安裝相配合,這使得筒形法蘭的制造更容易。 PEP-II齒輪泵帶有與泵的規格相匹配的加熱元件,可供用戶選配,這可保證快速加溫和熱量控制。與泵體內加熱方式不同,這些元件的損壞只限于一個板子上,與整個泵無關。(VICKERS)PVH131型號 威格士 PVH131R13AF30A25000000100100010A PVH131R13AF30B25200000100100010A PVH131R13AF30A250000001001AA010A PVH131R13AF30B252000001001AA010A PVH131R13AF30A25000000200100010A PVH131R13AF30B25200000200100010A PVH131R13AF30A250000001001AB010A PVH131R13AF30B252000001001AB010A PVH131R13AF30A250000001001AE010A PVH131R13AF30B252000001001AE010A PVH131R13AG30A250000001001AB010A PVH131R13AG30D250004001001AE010A PVH131R13AF30A250000002001AB010A PVH131R13AF30B252000002001AB010A PVH131R13AF30A250000002001AE010A PVH131C-RF-13S-10-C25-31 PVH131C-RF-13S-10-C25V-31 PVH131C-RF-13S-11-C25-31 PVH131C-RF-13S-11-C25V-31 PVH131C-RSF-13S-10-C25-31 PVH131C-RSF-13S-10-C25V-31 PVH131QIC-RF-13S-10-C25-31 PVH131QIC-RF-13S-10-C25V-31 PVH131QIC-RF-13S-11-C25-31 PVH131QIC-RF-13S-11-C25V-31 PVH131QIC-RM-13S-10-C25-31 PVH131QIC-RM-13S-11-C25T4-31 PVH131QIC-RSF-13S-10-C25-31 PVH131QIC-RSF-13S-10-C25V-31 PVH131QIC-RSF-13S-11-C25-31 (VICKERS)PVH57型號. PVH057R01AA10A25000000100100010A PVH057R01AA10B25200000100100010A PVH057R02AA10A25000000100100010A PVH057R02AA10B25200000100100010A PVH057R02AA10A250000001001AA010A PVH057R02AA10B252000001001AA010A PVH057R01AB10B252000001001AA010A PVH057R02AB10B252000001001AA010A PVH057R01AA10A25000000200100010A PVH057R01AA10B25200000200100010A PVH057R02AA10A25000000200100010A PVH057R02AA10B252000002001AA010A PVH057R01AA10A250000001001AB010A PVH057R01AA10B252000001001AB010A PVH057R01AA10A250000001001AF010A PVH057R01AA10B252000001001AE010A PVH057R02AA10A250000001001AB010A PVH057R02AA10B252000001001AB010A PVH057R02AA10A250000001001AF010A PVH057R02AA10A250000001001AE010A PVH057R02AA10B252000001001AF010A PVH057R02AA10B252000001001AE010A PVH057R01AB10A250000001001AB010A PVH057R01AA10A250000002001AB010A PVH057R01AA10B252000002001AB010A PVH057R01AA10A250000002001AE010A PVH057R02AA10A250000002001AB010A PVH057R01AB10A250000002001AE010A PVH57C-RF-1S-10-C25-31美國進口VICKERS威格士齒輪泵 PVH57C-RF-1S-10-C25V-31 PVH57C-RF-2S-10-C25-31 PVH57C-RF-2S-10-C25V-31 PVH57C-RF-2S-11-C25-31 PVH57C-RF-2S-11-C25V-31 PVH57C-RM-1S-11-C25V-31 PVH57C-RM-2S-11-C25V-31 PVH57C-RSF-1S-10-C25-31 PVH57C-RSF-1S-10-C25V-31 PVH57C-RSF-2S-10-C25-31 PVH57C-RSF-2S-11-C25V-31 PVH57QIC-RF-1S-10-C25-31 PVH57QIC-RF-1S-10-C25V-31 PVH57QIC-RF-1S-11-C25-31 PVH57QIC-RF-1S-11-C25V-31 PVH57QIC-RF-2S-10-C25-31 PVH57QIC-RF-2S-10-C25V-31 PVH57QIC-RF-2S-11-C25-31 PVH57QIC-RF-2S-11-C25-31 PVH57QIC-RF-2S-11-C25V-31 PVH57QIC-RF-2S-11-C25V-31 PVH57QIC-RM-1S-10-C25-31 PVH57QIC-RSF-1S-10-C25-31 PVH57QIC-RSF-1S-10-C25V-31 PVH57QIC-RSF-1S-11-C25-31 PVH57QIC-RSF-2S-10-C25-31 PVH57QIC-RSM-1S-11-C25-31(VICKERS)PVH074型號. PVH074R01AA10A25000000100100010A PVH074R01AA10B25200000100100010A PVH074R01AA10A250000001001AA010A PVH074R01AA10B252000001001AA010A PVH074R02AA10A25000000100100010A PVH074R02AA10B25200000100100010A PVH074R02AA10B252000001001AA010A PVH074R01AA10A25000000200100010A PVH074R01AA10B25200000200100010A PVH074R01AA10A250000002001AA010A PVH074R02AA10A25000000200100010A PVH074R02AA10B25200000200100010A PVH074R01AA10A250000001001AB010A PVH074R01AA10B252000001001AB010A PVH074R01AA10A250000001001AE010A PVH074R01AA10B252000001001AE010A PVH074R02AA10A250000001001AB010A PVH074R02AA10B252000001001AB010A PVH074R02AA10A250000001001AE010A PVH074R02AA10B252000001001AE010A PVH074R01AB10A250000001001AB010A PVH074R02AB10A250000001001AE010A PVH074R01AA10A250000002001AB010A PVH074R01AA10B252000002001AB010A PVH074R01AA10A250000002001AE010A PVH074R02AA10A250000002001AB010A PVH074R02AA10A250000002001AE010A PVH074R01AB10A250000002001AE010A PVH74C-RF-1S-10-C25-31 PVH74C-RF-1S-10-C25V-31 PVH74C-RF-1S-11-C25-31 PVH74C-RF-1S-11-C25V-31 PVH74C-RF-2S-10-C25-31 PVH74C-RF-2S-10-C25V-31 PVH74C-RF-2S-11-C25V-31 PVH74C-RSF-1S-10-C25-31 PVH74C-RSF-1S-10-C25V-31 PVH74C-RSF-1S-11-C25-31 PVH74C-RSF-2S-10-C25-31 PVH74C-RSF-2S-10-C25V-31 PVH74QIC-RF-1S-10-C25-31 PVH74QIC-RF-1S-10-C25V-31 PVH74QIC-RF-1S-11-C25-31 PVH74QIC-RF-1S-11-C25V-31 PVH74QIC-RF-2S-10-C25-31 PVH74QIC-RF-2S-10-C25V-31 PVH74QIC-RF-2S-11-C25-31 PVH74QIC-RF-2S-11-C25V-31 PVH74QIC-RM-1S-10-C25-31 PVH74QIC-RM-2S-11-C25-31 PVH74QIC-RSF-1S-10-C25-31 PVH74QIC-RSF-1S-10-C25V-31 PVH74QIC-RSF-1S-11-C25-31 PVH74QIC-RSF-2S-10-C25-31 PVH74QIC-RSF-2S-11-C25-31 PVH74QIC-RSM-1S-11-C25-31(VICKERS)PVH098型號. PVH098R01AJ30A25000000100100010A PVH098R01AJ30B25200000100100010A PVH098R01AJ30B252000001001AA010A PVH098R02AJ30A25000000100100010A PVH098R02AJ30B25200000100100010A PVH098R02AJ30B252000001001AA010A PVH098R01AJ30A25000000200100010A PVH098R01AJ30B25200000200100010A PVH098R02AJ30A25000000200100010A PVH098R02AJ30B25200000200100010A PVH098R01AJ30A250000001001AB010A PVH098R01AJ30B252000001001AB010A PVH098R01AJ30A250000001001AE010A PVH098R02AJ30B252000001001AB010A PVH098R02AJ30A250000001001AE010A PVH098R01AD30A250000001001AB010A PVH098R01AD30A250000001001AE010A PVH098R01AJ30A250000002001AB010A PVH098R01AJ30B252000002001AB010A PVH098R01AJ30A250000002001AE010A PVH098R02AJ30A250000002001AB010A PVH098R02AJ30A250000002001AE010A PVH098R01AD30A250000002001AB010A PVH098R01AD30A250000002001AE010A PVH098R01AD30B252000002001AE010A PVH98C-RF-1S-10-C25-31 PVH98C-RF-1S-10-C25V-31 PVH98C-RF-1S-11-C25V-31 PVH98C-RF-2S-10-C25-31 PVH98C-RF-2S-10-C25V-31 PVH98C-RF-2S-11-C25V-31 PVH98C-RSF-1S-10-C25-31 PVH98C-RSF-1S-10-C25V-31 PVH98C-RSF-2S-10-C25-31 PVH98C-RSF-2S-10-C25V-31 PVH98QIC-RF-1S-10-C25-31 PVH98QIC-RF-1S-10-C25V-31 PVH98QIC-RF-1S-11-C25-31 PVH98QIC-RF-2S-10-C25V-31 PVH98QIC-RF-2S-11-C25-31 PVH98QIC-RM-1S-10-C25-31 PVH98QIC-RM-1S-11-C25-31 PVH98QIC-RSF-1S-10-C25-31 PVH98QIC-RSF-1S-10-C25V-31 PVH98QIC-RSF-1S-11-C25-31 PVH98QIC-RSF-2S-10-C25-31 PVH98QIC-RSF-2S-11-C25-31 PVH98QIC-RSM-1S-10-C25-31 PVH98QIC-RSM-1S-11-C25-31 PVH98QIC-RSM-1S-11-C25V-31 齒輪泵由一個獨立的電機驅動,可有效地阻斷上游的壓力脈動及流量波動。在齒輪泵出口處的壓力脈動可以控制在1%以內。在擠出生產線上采用一臺齒輪泵,可以提高流量輸出速度,減少物料在擠出機內的剪切及駐留時間。外嚙合齒輪泵是應用zui廣泛的一種齒輪泵,一般齒輪泵通常指的就是外嚙合齒輪泵。它的結構如圖5-14所示,主要有主動齒輪、從動齒輪、泵體、泵蓋和安全閥等組成。泵體、泵蓋和齒輪構成的密封空間就是齒輪泵的工作室。兩個齒輪的輪軸分別裝在兩泵蓋上的軸承孔內,主動齒輪軸伸出泵體,由電動機帶動旋轉。外嚙合齒輪泵結構簡單、重量輕、造價低、工作可靠、應用范圍廣。 齒輪泵工作時,主動輪隨電動機一起旋轉并帶動從動輪跟著旋轉。當吸入室一側的嚙合齒逐漸分開時,吸入室容積增大,壓力降低,便將吸人管中的液體吸入泵內;吸入液體分兩路在齒槽內被齒輪推送到排出室。液體進入排出室后,由于兩個齒輪的輪齒不斷嚙合,使液體受擠壓而從排出室進入排出管中。主動齒輪和從動齒輪不停地旋轉,泵就能連續不斷地吸入和排出液體。泵體上裝有安全閥,當排出壓力超過規定壓力時,輸送液體可以自動頂開安全閥,使高壓液體返回吸入管。內嚙合齒輪泵,它由一對相互嚙合的內齒輪及它們中間的月牙形件、泵殼等構成。月牙形件的作用是將吸入室和排出室隔開。當主動齒輪旋轉時,在齒輪脫開嚙合的地方形成局部真空,液體被吸入泵內充滿吸入室各齒間,然后沿月牙形件的內外兩側分兩路進入排出室。在輪齒進入嚙合的地方,存在于齒間的液體被擠壓而送進排出管。齒輪泵除具有自吸能力、流量與排出壓力無關等特點外,泵殼上無吸入閥和排出閥,具有結構簡單,流量均勻、工作可靠等特性,但效率低、噪音和振動大、易磨損,用來輸送無腐蝕性、無固體顆粒并且具有潤滑能力的各種油類,溫度一般不超過70 ℃,例如潤滑油、食用植物油等。一般流量范圍為0.045~30ms/h,壓力范圍為0.7—20MPa,工作轉速為1200—4000r/min。 威斯特(上海)傳感器儀表有限公司主要做歐美品牌,我們在德國有公司,可以采購歐洲任何國家的品牌,比如德國的優勢品牌有:德國寶德BURKERT,德國DEMAG德馬格、德國HAWE哈威,德國REXROTH力士樂,德國HYDAC賀德克,德國PILZ皮爾茲繼電器,德國FESTO費斯托,德國IFM易福門傳感器,德國E+H恩德斯豪斯,德國海德漢HEIDENHAIN,德國P+F倍加福傳感器,德國施克SICK,德國TURCK圖爾克,德國HIRSCHMANN赫斯曼工業交換機。 |