Constant-pressure-difference mechanical micro-positive-pressure door body device

The utility model discloses a constant-pressure-difference mechanical micro-positive-pressure door body device. The door comprises a door frame and a door body hinged to one side of the door frame, the door body is connected with a control mechanism capable of controlling the opening and closing degree of the door body, the control mechanism comprises a balance weight connected with the door bodythrough a slidable connecting assembly, and the opening and closing degree of the door body is controlled through movement of the balance weight. According to the utility model, the energy consumptionis saved, the outdoor condensation water amount is reduced, and the service life of the laboratory cabin body can be prolonged; the whole structure is mechanical, the applicability to the adverse environment is high, damage is not likely to be generated, and the performance is more stable. 本实用新型公开了一种恒压差机械式微正压门体装置，包括门框、以及与所述门框一侧铰接的门体，所述门体连接有能够控制其开闭大小的控制机构，所述控制机构包括通过可滑动的连接组件与门体连接的配重砝码，并通过配重砝码的移动来控制门体开闭的大小。本实用新型节省了能耗，降低了室外凝结