小型油壓機中溢流閥的常見故障及排除方法

┃故障現(xiàn)象  ┃    產(chǎn)  生原  因                            ┃    排除  方  法                          ┃
┣━━━━━╋━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━┫
┃          ┃    (l)彈簧彎曲或彈簧剛度太低               ┃    (1)更換彈簧                           ┃
┃          ┃    (2)油液不清潔，阻尼孔不暢通             ┃    (2)清洗阻尼孔                         ┃
┃壓力波動  ┃                                            ┃                                          ┃
┃          ┃    (3)錐閥與錐閥座接觸不良或磨損           ┃    (3)更換錐閥                           ┃
┃          ┃    (4)滑閥表面拉傷或彎曲變形，滑閥動作不靈 ┃    (4)修磨滑閥或更換滑閥                 ┃
┣━━━━━╋━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━┫
┃          ┃  (1)回油路有空氣進(jìn)入                       ┃  (l)擰緊油管接頭                         ┃
┃          ┃  (2)調(diào)壓彈簧永久變形                       ┃  (2)更換彈簧                             ┃
┃          ┃  (3)流量超過額定值                         ┃  (3)更換流量匹配的溢流閥                 ┃
┃  振動和  ┃                                            ┃                                          ┃
┃          ┃  (4)錐閥與閥座接觸不良或磨損               ┃  (4)修磨錐閥或更換錐閥                   ┃
┃  噪聲    ┃                                            ┃                                          ┃
┃          ┃  (5)油溫過高，回油阻力過大                 ┃  (5)降低油溫，降低回油阻力               ┃
┃          ┃  (6)滑閥與閥蓋配合間隙過大                 ┃  (6)檢查滑閥，控制配合間隙               ┃
┃          ┃  (7)回油不暢通                             ┃  (7)清洗回油管路                         ┃
┣━━━━━╋━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━┫
┃          ┃  (1)滑閥卡住                               ┃  (l)修磨滑閥或更換滑閥                   ┃
┃          ┃  (2)進(jìn)、出油門接反                         ┃  (2)糾正進(jìn)、出油口位置                   ┃
┃          ┃  (3)遠(yuǎn)程控制口接油箱或泄漏嚴(yán)重             ┃  (3)切斷遠(yuǎn)程控制口接油箱的油路，加強密封 ┃
┃          ┃  (4)主閥彈簧太軟、變形                     ┃  (4)更換彈簧                             ┃
┃  壓力調(diào)  ┃                                            ┃                                          ┃
┃          ┃  (5)先導(dǎo)閥座小孔堵塞                       ┃  (5)檢查清洗                             ┃
┃  整無效  ┃                                            ┃                                          ┃
┃          ┃  (6)滑閥阻尼孔堵塞                         ┃  (6)清洗阻尼孔                           ┃
┃          ┃  (7)緊固螺釘松動                           ┃  (7)調(diào)整閥蓋螺釘                         ┃
┃          ┃  (8)壓力表不準(zhǔn)                             ┃  (8)檢修或更換壓力表                     ┃
┃          ┃  (9)調(diào)壓彈簧折斷                           ┃  (9)更換彈簧                             ┃
┣━━━━━╋━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━┫
┃          ┃  (l)雒閥與閥座配合不良                     ┃  (l)修磨錐閥或更換錐閥                   ┃
┃          ┃  (2)滑閥與閥體配合間隙過大                 ┃  (2)修配滑閥或更換滑閥                   ┃
┃  泄漏    ┃  (3)緊固螺釘松動                           ┃  (3)擰緊螺釘                             ┃
┃          ┃  (4)密封件損壞                             ┃  (4)檢查密封，更換密封                   ┃
┃          ┃  (5)工作壓力過高                           ┃  cs)降低工作壓力或選用額