January 15, 2025 news, the State Intellectual Property Office information shows that Hunan Meihu Zhizao Co., Ltd. applied for a patent named “a kind of end face compensation bidirectional Rotary Lobe Pump”, Public No. CN 119288855 A, the date of application is November 2024.

According to the abstract of the patent, the present invention discloses an end face compensated bi-directional Rotary Lobe Pump, including a pump body unit, a rotor unit and a push plate positioning unit, the pump body unit includes a pump body, a pump cover and a drive shaft, the pump body and the pump cover are fixedly connected by fasteners, the pump body is formed with a pump cavity, the drive shaft is threaded into the pump body, the rotor unit includes an internal rotor and an external rotor, the internal rotor is fixed to the drive shaft, the external rotor is meshed with the internal rotor, the drive shaft drives the internal rotor to rotate, the internal rotor is driven by the drive shaft, and the internal rotor is driven by the drive shaft. The rotor unit includes an inner rotor and an outer rotor, the inner rotor is fixed to the drive shaft, the outer rotor engages with the inner rotor, and the drive shaft drives the inner rotor to rotate; the pusher plate positioning unit includes a plurality of pusher plates, a pusher plate positioning sleeve, and a rubber ring, and the pusher plate positioning unit is disposed between the rotor unit and the pump unit, and the pusher plate is adhered to an end face of the rotor unit under the action of the elastic force of the rubber ring. The present invention provides an end-face compensated bidirectional Rotary Lobe Pump, which effectively reduces the leakage caused by the end-face gap through the end-face compensation mechanism, and at the same time realizes the bidirectional rotary function of the pump, and improves the volumetric efficiency and flexibility of the pump.

Eye of the sky information shows that Hunan Meihu Zhizao Co., Ltd, founded in 1994, is located in Hengyang City, is a general equipment manufacturing industry is mainly engaged in the enterprise. The registered capital of the enterprise is 20804.3062 million RMB, and the paid-in capital is 1722.9592 million RMB. Through the analysis of big data of Tianyecha, Hunan Meihu Zhizao Co., Ltd. has invested in 20 enterprises externally, participated in bidding projects for 33 times, and has 4 trademark information and 784 patent information in terms of intellectual property rights, in addition, the enterprise also has 44 administrative licenses.