3results about How to "Change traffic" patented technology

The invention relates to an impact-reducing electromagnetic unloading control system for a pump and an impact-reducing control method of the impact-reducing electromagnetic unloading control system for the pump, an outlet of an emulsion pump of the impact-reducing electromagnetic unloading control system for the pump is connected with a load through a one-way valve, and an unloading overflow valve and an unloading main valve are arranged between the outlet of the emulsion pump and an inlet of the one-way valve; hydraulic control pilot control oil ways of the unloading overflow valve and the unloading main valve are connected with an oil tank through a first electromagnetic pilot valve and a second electromagnetic pilot valve respectively, and the hydraulic control pilot control oil ways of the unloading overflow valve and the unloading main valve are connected with an outlet of the emulsion pump at the positions before the hydraulic control pilot control oil ways are connected with the first electromagnetic pilot valve or the second electromagnetic pilot valve. A pressure collector in transmission connection with a controller is arranged at an inlet of the load, the controller is in control connection with a circuit on-off device of the first electromagnetic pilot valve and a circuit on-off device of the second electromagnetic pilot valve, and the flow of the unloading main valve is larger than that of the unloading overflow valve. The flow of the system is adjusted through the overflow unloading valve and the unloading main valve, the flow can be rapidly changed, and the cost is low.

The utility model relates to heat exchanger unit technical field especially intelligent heat exchanger unit, its technical scheme includes: box, the finned tube bundle is fixedly installed in the box, the first installation groove is installed in the box one end opening and intercommunication, the air injection fan is fixedly installed through the mounting bracket at the first installation groove, the air injection fan installation place's box bottom is provided with the air inlet, the air injection fan is used for conveying gas to the finned tube bundle, the second installation groove is installed in the box other end opening and intercommunication, the air exhaust fan is embeddedly installed in the second installation groove, the air exhaust fan is used for discharging the gas in the box, control assembly is installed on the box, control assembly is used for controlling the output power of air injection fan and air exhaust fan. The utility model has the advantage that adjusts the fan power under the premise of guaranteeing the heat exchange efficiency, solves the problem that the existing heat exchanger unit fan is easy to overload and has the potential safety hazard.

The utility model relates to the field of nozzles, in particular to a flow-adjustable industrial nozzle which comprises a pipe body, a spray head, a fixed perforated plate and a rotatable perforated plate, the spray head is communicated with the upper end face of the pipe body, the fixed perforated plate is fixedly assembled in an inner cavity of the pipe body, the rotatable perforated plate is rotatably assembled in the inner cavity of the pipe body, two sides of the rotatable perforated plate are connected with locking mechanisms, and the locking mechanisms are connected with the spray head. The pipe body is sleeved with a limiting disc, a sliding groove is formed in the bottom of the hollow arm and slidably connected with the connecting rod, sliding grooves are formed in the two sides of the outer portion of the grooving annular block, and transverse grooves are formed in the two sides of the outer portion of the pipe body. According to the industrial nozzle capable of adjusting the flow, the sliding arm, the pressing plate, the connecting rod, the clamping arm and the limiting disc are additionally arranged, after the positions of the rotatable perforated plate and the fixed perforated plate are changed, the position of the rotatable perforated plate is automatically locked, and the situation that the flow of the pipe body is changed due to the fact that the rotatable perforated plate is driven by the external environment to rotate is avoided.