The invention provides a double-cylinder diaphragm vacuum pump. The double-cylinder diaphragm vacuum pump comprises a pump body, a pump cover, a sealing ring, a diaphragm assembly, a connecting rod, a fastening bolt, a connecting rod cover and a motor assembly; a motor shaft of the motor assembly is provided with a crankshaft-imitated section; the whole connecting rod is in a Y shape, one end of the connecting rod is a straight rod and is fixedly connected with an internal thread on a diaphragm through an external thread to form an integral part, the other end of the connecting rod is a fork-shaped part with an arc-shaped groove, and two threaded holes are formed in the end face of the fork-shaped part; the whole connecting rod cover is semicircular, and two bolt through holes are formed in the connecting rod cover; and the fork-shaped part of the connecting rod and the connecting rod cover enclose the crankshaft-imitated section of the motor shaft from two sides correspondingly and are connected into an annular sleeve through the fastening bolt, and the annular sleeve is in clearance fit with the motor shaft. According to the technical scheme, the connecting rod and the connecting rod cover are connected into the annular sleeve through the fastening bolt, and the annular sleeve sleeves the crankshaft-imitated section of the motor shaft, so that the structure is simple, and mounting and dismounting are very convenient.

    本发明提供了一种双缸隔膜真空泵,包括泵体、泵盖、密封圈、膜片总成、连杆、紧固螺栓、连杆盖、电机总成;所述电机总成的电机轴上具有仿曲轴段;所述连杆整体呈Y字形,连杆的一端为直杆并通过外螺纹与膜片上的内螺纹紧固连接形成一个整体部件,连杆的另一端为具有弧形凹槽的叉状部,该叉状部的端面设有两个螺纹孔;所述连杆盖整体为半环形,其上设有两个螺栓过孔;所述连杆的叉状部和连杆盖分别从两边合抱住电机轴的仿曲轴段并通过紧固螺栓连接为一个环形套,该环形套与电机轴为间隙配合。上述技术方案中,通过紧固螺栓将连杆和连杆盖连接成一个环形套并套在电机轴的仿曲轴段上,采用这种方式,不仅结构简单,而且安装和拆卸都非常方便。


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    Title :

    Double-cylinder diaphragm vacuum pump


    Additional title:

    一种双缸隔膜真空泵


    Contributors:
    TAN ZHU (author) / DONG RENZE (author)

    Publication date :

    2021-10-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS



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