液(Ye)压(Ya)齿(Chi)轮(Lun)泵(Beng)要(Yao)能(Neng)连(Lian)续(Xu)地(Di)供(Gong)油(You),(?)就(Jiu)要(Yao)求(Qiu)齿(Chi)轮(Lun)啮(Nie)合(He)的(De)重(Zhong)叠(Die)系(Xi)数(Shu)ε(?)大(Da)于(Yu)1,(?)也(Ye)就(Jiu)是(Shi)当(Dang)一(Yi)对(Dui)齿(Chi)轮(Lun)尚(Shang)未(Wei)脱(Tuo)开(Kai)啮(Nie)合(He)时(Shi),(?)另(Ling)一(Yi)对(Dui)齿(Chi)轮(Lun)已(Yi)进(Jin)入(Ru)啮(Nie)合(He),(?)这(Zhe)样(Yang),(?)就(Jiu)出(Chu)现(Xian)同(Tong)时(Shi)有(You)两(Liang)对(Dui)齿(Chi)轮(Lun)啮(Nie)合(He)的(De)瞬(Shun)间(Jian),(?)在(Zai)两(Liang)对(Dui)齿(Chi)轮(Lun)的(De)齿(Chi)向(Xiang)啮(Nie)合(He)线(Xian)之(Zhi)间(Jian)形(Xing)成(Cheng)了(Liao)一(Yi)个(Ge)封(Feng)闭(Bi)容(Rong)积(Ji),(?)一(Yi)部(Bu)分(Fen)油(You)液(Ye)也(Ye)就(Jiu)被(Bei)困(Kun)在(Zai)这(Zhe)一(Yi)封(Feng)闭(Bi)容(Rong)积(Ji)中(Zhong),(?)齿(Chi)轮(Lun)连(Lian)续(Xu)旋(Xuan)转(Zhuan)时(Shi),(?)这(Zhe)一(Yi)封(Feng)闭(Bi)容(Rong)积(Ji)便(Bian)逐(Zhu)渐(Jian)减(Jian)小(Xiao),(?)到(Dao)两(Liang)啮(Nie)合(He)点(Dian)处(Chu)于(Yu)节(Jie)点(Dian)两(Liang)侧(Ce)的(De)对(Dui)称(Cheng)位(Wei)置(Zhi)时(Shi),(?)封(Feng)闭(Bi)容(Rong)积(Ji)为(Wei)最(Zui)小(Xiao),(?)齿(Chi)轮(Lun)再(Zai)继(Ji)续(Xu)转(Zhuan)动(Dong)时(Shi),(?)封(Feng)闭(Bi)容(Rong)积(Ji)又(You)逐(Zhu)渐(Jian)增(Zeng)大(Da)。(?)
在(Zai)封(Feng)闭(Bi)容(Rong)积(Ji)减(Jian)小(Xiao)时(Shi),(?)被(Bei)困(Kun)油(You)液(Ye)受(Shou)到(Dao)挤(Ji)压(Ya),(?)压(Ya)力(Li)急(Ji)剧(Ju)上(Shang)升(Sheng),(?)使(Shi)轴(Zhou)承(Cheng)上(Shang)突(Tu)然(Ran)受(Shou)到(Dao)很(Hen)大(Da)的(De)冲(Chong)击(Ji)载(Zai)荷(He),(?)使(Shi)泵(Beng)剧(Ju)烈(Lie)振(Zhen)动(Dong),(?)这(Zhe)时(Shi)高(Gao)压(Ya)油(You)从(Cong)一(Yi)切(Qie)可(Ke)能(Neng)泄(Xie)漏(Lou)的(De)缝(Feng)隙(Xi)中(Zhong)挤(Ji)出(Chu),(?)造(Zao)成(Cheng)功(Gong)率(Lu)损(Sun)失(Shi),(?)使(Shi)油(You)液(Ye)发(Fa)热(Re)等(Deng)。(?)
当(Dang)封(Feng)闭(Bi)容(Rong)积(Ji)增(Zeng)大(Da)时(Shi),(?)由(You)于(Yu)没(Mei)有(You)油(You)液(Ye)补(Bu)充(Chong),(?)因(Yin)此(Ci)形(Xing)成(Cheng)局(Ju)部(Bu)真(Zhen)空(Kong),(?)使(Shi)原(Yuan)来(Lai)溶(Rong)解(Jie)于(Yu)油(You)液(Ye)中(Zhong)的(De)空(Kong)气(Qi)分(Fen)离(Li)出(Chu)来(Lai),(?)形(Xing)成(Cheng)了(Liao)气(Qi)泡(Pao),(?)油(You)液(Ye)中(Zhong)产(Chan)生(Sheng)气(Qi)泡(Pao)后(Hou),(?)会(Hui)引(Yin)起(Qi)噪(Zao)声(Sheng)、(?)气(Qi)蚀(Shi)等(Deng)一(Yi)系(Xi)列(Lie)恶(E)果(Guo)。(?)以(Yi)上(Shang)情(Qing)况(Kuang)就(Jiu)是(Shi)齿(Chi)轮(Lun)泵(Beng)的(De)困(Kun)油(You)现(Xian)象(Xiang)。(?)这(Zhe)种(Zhong)困(Kun)油(You)现(Xian)象(Xiang)极(Ji)为(Wei)严(Yan)重(Zhong)地(Di)影(Ying)响(Xiang)着(Zhuo)泵(Beng)的(De)工(Gong)作(Zuo)平(Ping)稳(Wen)性(Xing)和(He)使(Shi)用(Yong)寿(Shou)命(Ming)。(?)
齿(Chi)轮(Lun)泵(Beng)厂(Chang)家(Jia)为(Wei)了(Liao)消(Xiao)除(Chu)困(Kun)油(You)现(Xian)象(Xiang),(?)在(Zai)齿(Chi)轮(Lun)泵(Beng)的(De)泵(Beng)盖(Gai)上(Shang)铣(Xi)出(Chu)两(Liang)个(Ge)困(Kun)油(You)卸(Xie)荷(He)凹(Ao)槽(Cao)。(?)卸(Xie)荷(He)槽(Cao)的(De)位(Wei)置(Zhi)应(Ying)该(Gai)使(Shi)困(Kun)油(You)腔(Qiang)由(You)大(Da)变(Bian)小(Xiao)时(Shi),(?)能(Neng)通(Tong)过(Guo)卸(Xie)荷(He)槽(Cao)与(Yu)压(Ya)油(You)腔(Qiang)相(Xiang)通(Tong),(?)而(?)当(Dang)困(Kun)油(You)腔(Qiang)由(You)小(Xiao)变(Bian)大(Da)时(Shi),(?)能(Neng)通(Tong)过(Guo)另(Ling)一(Yi)卸(Xie)荷(He)槽(Cao)与(Yu)吸(Xi)油(You)腔(Qiang)相(Xiang)通(Tong)。(?)两(Liang)卸(Xie)荷(He)槽(Cao)之(Zhi)间(Jian)的(De)距(Ju)离(Li)为(Wei)a,(?)必(Bi)须(Xu)保(Bao)证(Zheng)在(Zai)任(Ren)何(He)时(Shi)候(Hou)都(Du)不(Bu)能(Neng)使(Shi)压(Ya)油(You)腔(Qiang)和(He)吸(Xi)油(You)腔(Qiang)互(Hu)通(Tong)。(?)
按(An)上(Shang)述(Shu)对(Dui)称(Cheng)开(Kai)的(De)卸(Xie)荷(He)槽(Cao),(?)当(Dang)困(Kun)油(You)封(Feng)闭(Bi)腔(Qiang)由(You)大(Da)变(Bian)至(Zhi)最(Zui)小(Xiao)时(Shi),(?)由(You)于(Yu)油(You)液(Ye)不(Bu)易(Yi)从(Cong)即(Ji)将(Jiang)关(Guan)闭(Bi)的(De)缝(Feng)隙(Xi)中(Zhong)挤(Ji)出(Chu),(?)故(Gu)封(Feng)闭(Bi)油(You)压(Ya)仍(Reng)将(Jiang)高(Gao)于(Yu)压(Ya)油(You)腔(Qiang)压(Ya)力(Li);(?)齿(Chi)轮(Lun)继(Ji)续(Xu)转(Zhuan)动(Dong),(?)当(Dang)封(Feng)闭(Bi)腔(Qiang)和(He)吸(Xi)油(You)腔(Qiang)相(Xiang)通(Tong)的(De)瞬(Shun)间(Jian),(?)高(Gao)压(Ya)油(You)又(You)突(Tu)然(Ran)和(He)吸(Xi)油(You)腔(Qiang)的(De)低(Di)压(Ya)油(You)相(Xiang)接(Jie)触(Chu),(?)会(Hui)引(Yin)起(Qi)冲(Chong)击(Ji)和(He)噪(Zao)声(Sheng)。(?)
于(Yu)是(Shi)CBB型(Xing)齿(Chi)轮(Lun)泵(Beng)将(Jiang)卸(Xie)荷(He)槽(Cao)的(De)位(Wei)置(Zhi)整(Zheng)个(Ge)向(Xiang)吸(Xi)油(You)腔(Qiang)侧(Ce)平(Ping)移(Yi)了(Liao)一(Yi)个(Ge)距(Ju)离(Li)。(?)这(Zhe)时(Shi)封(Feng)闭(Bi)腔(Qiang)只(Zhi)有(You)在(Zai)由(You)小(Xiao)变(Bian)大(Da)时(Shi)才(Cai)和(He)压(Ya)油(You)腔(Qiang)断(Duan)开(Kai),(?)油(You)压(Ya)没(Mei)有(You)突(Tu)变(Bian),(?)封(Feng)闭(Bi)腔(Qiang)和(He)吸(Xi)油(You)腔(Qiang)接(Jie)通(Tong)时(Shi),(?)封(Feng)闭(Bi)腔(Qiang)不(Bu)会(Hui)出(Chu)现(Xian)真(Zhen)空(Kong)也(Ye)没(Mei)有(You)压(Ya)力(Li)冲(Chong)击(Ji),(?)这(Zhe)样(Yang)改(Gai)进(Jin)后(Hou),(?)使(Shi)齿(Chi)轮(Lun)泵(Beng)的(De)振(Zhen)动(Dong)和(He)噪(Zao)声(Sheng)得(De)到(Dao)了(Liao)进(Jin)一(Yi)步(Bu)改(Gai)善(Shan)。(?)
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