product description:

   The sucker rod centering device, the sucker rod is connected to the universal device, the screw pump is connected to the anti-drop device through the connecting end, a connector is inserted between the universal device and the anti-drop device, and the anti-drop device is installed The anti-drop spring group connects the universal device and the anti-drop device to the screw pump and sucker rod. It has a stable and firm structure, prevents the screw pump from eccentric vibration, prolongs its service life, prolongs the pump inspection cycle, and improves oil production efficiency.