US 12,404,758 B2
Mixing and discharging device, mixing and discharging system and fracturing system
Maomao Han, Shandong (CN); Liang Lv, Shandong (CN); Yipeng Wu, Shandong (CN); Shuwei Li, Shandong (CN); and Chunqiang Lan, Shandong (CN)
Assigned to Yantai Jereh Petroleum Equipment & Technologies Co., Ltd., Yantai (CN)
Filed by YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD., Shandong (CN)
Filed on Nov. 21, 2023, as Appl. No. 18/515,541.
Application 18/515,541 is a continuation of application No. 17/534,261, filed on Nov. 23, 2021, granted, now 11,821,296.
Claims priority of application No. 202110870733.0 (CN), filed on Jul. 30, 2021.
Prior Publication US 2024/0084686 A1, Mar. 14, 2024
Int. Cl. E21B 43/26 (2006.01); E21B 21/06 (2006.01); E21B 43/267 (2006.01)
CPC E21B 43/2607 (2020.05) [E21B 21/062 (2013.01); E21B 43/267 (2013.01); E21B 43/26 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A mixing and discharging device, comprising:
a main shell comprising a top cover;
an impeller structure in the main shell; and
a main shaft which is configured to drive the impeller structure to rotate, penetrates through the top cover and extends into the main shell, wherein a bottom end of the main shaft is in the main shell and is fixed on the impeller structure, and the bottom end of the main shaft is separated from the main shell,
wherein the impeller structure comprises a plurality of outer blades that are separate from and surround a grinding wheel, the grinding wheel comprising a plurality of grinding blades, and the plurality of outer blades being arranged in at least two layers along an axial direction of the main shaft.