2results about How to "Increase fuel supply" patented technology

The utility model discloses a kind of hydraulic control systems with pressure operation device, belong to hydraulic control system technical field, comprising: lifting cylinder control circuit, wellhead device control circuit and energy accumulator circuit, the lifting cylinder control circuit, the wellhead device control circuit and the energy accumulator circuit All be provided with at least one detection device for detecting pressure and / or flow in hydraulic pipeline, rotational speed sensor for detecting rotational speed is provided on the hydraulic source, the detection device and the rotational speed sensor are electrically connected with control system respectively, when system fails, according to control system acquisition pressure and / or flow data detected by detection device and rotational speed detected by rotational speed sensor, and the above detection data are compared with calibration data in system, can accurately find fault point, to reduce maintenance personnel workload, quickly restore production.

The application belongs to the technical field of injection molding machines, and particularly relates to a hydraulic oil cylinder oil supplement system and an injection molding machine. The hydraulic oil cylinder oil supplement system comprises: an oil cylinder comprising a rodless cavity and a rod cavity; a first oil tank and a second oil tank; a first electro-hydraulic valve comprising a first inlet, a first oil return pipeline opening, a first outlet and a second outlet, the first inlet being communicated with the first oil tank through a first oil inlet pipeline, the first oil return pipeline opening being communicated with the second oil tank through a first oil return pipeline, the first outlet being communicated with the rodless cavity through a first oil supply pipeline, and the second outlet being communicated with the rod cavity through a second oil supply pipeline; and a control valve, one end of which is communicated with the second oil tank through the first oil return pipeline, and the other end of which is communicated with the rodless cavity through the first oil supply pipeline, the control valve being capable of being opened to supplement oil to the rodless cavity when the injection molding machine is storing materials, and the control valve being capable of being closed when the injection molding machine is performing a glue extraction action. The application can effectively solve the problem of glue extraction delay, improve the production efficiency of the injection molding machine, and reduce the production cost.