KDAS組合密封圈:
DAS是雙作用組合密封件,由三部分組成:一個彈性密封A,兩個支撐環(huán)B,兩個導(dǎo)向環(huán)C。
彈性密封A有一個特別截面,三個密封唇口緊貼缸壁(動密封)。中間唇口較厚,起主要密封作用,其他兩個唇起輔助密封作用。底側(cè)與活塞溝槽底部緊貼(靜密封),接觸面相對前述三個唇口大。
支撐環(huán)B置于A兩側(cè)起定位作用。支撐彈性密封A并防止A出現(xiàn)徑向密封間隙。支撐環(huán)B呈階梯狀,與密封元件接觸的一側(cè)有許多凸塊用以防止密封圈在工作中旋轉(zhuǎn)。
導(dǎo)向環(huán)C呈矩形,裝在活塞上起導(dǎo)向和吸收軸向力的作用。導(dǎo)向環(huán)上下都開了幾條軸向槽,使壓力油能渡過導(dǎo)向環(huán),因而彈性密封A都感受全部工作壓力并在換方向時快速釋放壓力。這就防止在彈性密封A前產(chǎn)生持續(xù)超高壓。
DAS材料的硬度從內(nèi)到外逐步增加,根據(jù)其特點,分別起到密封,支撐和導(dǎo)向作用。
DAS為自緊雙作用密封件。在初始狀態(tài),彈性密封A變形產(chǎn)生一個徑向預(yù)緊力,并隨著系統(tǒng)壓力的增加而增加,從而產(chǎn)生一個完全的密封作用力即使系統(tǒng)沒有壓力也能起到密封的效果。
K-DAS組合孔用密封件部分型號規(guī)格尺寸表
DAS-202011171913.52.1
DAS-222213192113.52.1
DAS-252515222412.54
DAS-252516222413.52.1
DAS-282819252713.52.1
DAS-303021272913.52.1
DAS-32/13222283115.52.6
DAS-32322228.530.516.46.35
DAS-3232242831.415.53.2
DAS-35/13525313415.52.6
DAS-35352531.433.516.46.35
DAS-40402435.438.518.46.35
DAS-404026363915.52.6
DAS-40403035.438.516.46.35
DAS-40/140303639.412.54
DAS-4040323639.415.53.2
DAS-424228384115.52.6
DAS-45452940.443.718.46.35
DAS-454531414415.52.6
DAS-45453540.443.516.46.35
DAS-50/15034464920.53.1
DAS-50503445.448.518.46.35
DAS-5050384649.420.54.2
DAS-55/15539515420.53.1
DAS-55553950.453.518.46.35
DAS-565640525520.53.1
DAS-60/16044565920.53.1
DAS-60604455.458.518.46.35
DAS-6060485659.420.54.2
DAS-63/1634758.46220.53.1
DAS-63/26347596220.53.1
DAS-63634758.461.518.46.35
DAS-6363515962.420.54.2
DAS-656549616420.53.1
DAS-65655060.463.518.46.35
DAS-70705064.268.322.46.35
DAS-707054666920.53.1
DAS-7070586669.420.54.2
DAS-75755569.273.322.46.35
DAS-757559717420.53.1
DAS-80806074.1578.322.46.35
DAS-808062767922.53.6
DAS-8080667679.422.55.2
DAS-85856579.1583.322.46.35
DAS-90907084.1588.322.56.35
DAS-909072868922.53.6
DAS-9090768689.422.55.2
DAS-95957589.1593.322.46.35
DAS-100100809598256.35
DAS-1001007593.159822.46.35
DAS-10010082969922.53.6
DAS-100100869699.422.55.2
DAS-1051058098.110322.46.35
DAS-11011085103.110822.46.35
DAS-1101109210610922.53.6
DAS-11011096106109.422.55.2
DAS-11511590108.111322.46.35
DAS-1151159711111422.53.6
DAS-12012095113.1118.122.46.35
DAS-120120106116119.422.55.2
DAS-1251251
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