Powder feed rate control system that includes a hopper adapted to contain a powder and to maintain a hopper pressure. A carrier conduit delivers a carrier gas flow and having an orifice. The carrier gas flow conveys powder entering through the orifice at a powder feed rate. A differential pressure transducer includes a first pressure input associated with the hopper pressure and a second pressure input associated with the carrier gas flow downstream of the hopper. The differential pressure transducer (PT) outputs a signal related to a differential pressure between the first pressure input and the second pressure input. An electro pneumatic regulator (EP) is adapted to communicate with a control and receiving the signal related to the differential pressure.

A method for controlling a material flow rate from a metering system, includes determining, via a controller, a change in weight of material in a storage tank. The method further includes determining, via the controller, a swept area of an agricultural implement associated with the change in weight based at least in part on a width of the agricultural implement and a change in position of the agricultural implement. Further, the agricultural implement is configured to receive the material from the storage tank. The method also includes determining, via the controller, a calibration of the metering system based at least in part on the change in weight and the swept area. In addition, the method includes controlling, via the controller, a rotation rate of a meter roller of the metering system based at least in part on the calibration to control the material flow rate.

A particulate metering system includes an air flow origin and a plurality of particulate accelerators. A single particulate source is in communication with the particulate accelerators. Each of a plurality of operated conveyances can be in operable communication with the single particulate source and one of the particulate accelerators. The system includes a confluence of the air flow and the particulate within the mixing area of each of the particulate accelerators. Each of a plurality of discharges can be associated with the particulate accelerators. The operated conveyances can operate at different rates. The system can include one or more gearboxes adapted to be inverted and controlled by a second drive system. The system and controls provide variable application rates of particulate across rows in a field.

The present disclosure relates to the technical field of coal-fired power plant equipment, in particular to a PLC coal machine control system, including a PLC control unit, a weighing unit one, a weighing unit two, a drive unit, a frequency converter, a belt motor and a velocity measuring unit; wherein the PLC control unit is electrically connected to the weighing units one and two, for making a real-time collection of weight values of the two units; and the PLC control unit is electrically connected to the drive unit, frequency converter and velocity measuring unit, for making a real-time collection of output signals of the drive unit, velocities of the frequency converter and velocities detected by the velocity measuring unit. According to the present disclosure, the PLC controller is employed to process signals, so that the stability of the system is improved and stable operation of a generator set is guaranteed.

A liquid flow control attachment with wireless connection is described herein. An outer ring can be attached to a terminal end of a liquid dispensing unit, such as a hose, faucet, or pipe. The outer ring has an antenna and circuitry to enable wireless communications. A remote user can control a flow of liquid from the liquid dispensing unit, through the liquid flow control attachment, via wireless communications. An inner connector may also be used in conjunction with the outer ring to provide effective flow control. The inner connector may be wirelessly controlled such that it can be opened or controlled by a remote user, to control a flow of liquid from the liquid dispensing unit.

Apparatus for air flow limiting comprise a vertically oriented tube, a sail assembly positioned in the tube and moveable therewithin responsively to air flow through the tube to limit rate of air flow through the tube and halt air flow through the tube upon air flow rate through the tube exceeding a preselected value, and a moveable stop for adjustably changing the length of travel of the sail assembly thereby changing the maximum amount of air flow.

The method according to the invention provides a way to continue gravimetric weighing of bulk material during refilling of a gravimetric metered dispensing unit, and to determine the mass of the refilled bulk material using a refilling container during the filling operation material and so determine the actual mass flow discharged during refilling in real time or on average in order to adjust it to a target mass flow.

A system for dispensing medication comprises: a plurality of compartments to contain medication for a patient, wherein the compartments are configured to dispense pre-determined doses of medication of the patient; biometric sensors configured to measure biological characteristics of the patient; a display configured to display medication-related information; and a processor. The processor is configured to: determine one or more dispense times, each dispense time corresponding to each dose of the pre-determined doses of medication; store of one or more parameters for dispensing the pre-determined doses of medication at the corresponding dispense times, wherein the parameters relate to the biological characteristics; receive the biological characteristics of the patient from the biometric sensors; compare the parameters with the biological characteristics received; determine whether to dispense at least one of the pre-determined doses of medication from the compartments; and dispense one or more of the pre-determined doses of medication from the compartments.

Method and apparatus for air flow limiting comprise a vertically oriented tube, a sail assembly positioned in the tube and moveable therewithin responsively to air flow through the tube to limit rate of air flow through the tube and halt air flow through the tube upon air flow rate through the tube exceeding a preselected value, and a moveable stop for adjustably changing the length of travel of the sail assembly thereby changing the maximum amount of air flow.

A electrostatic powder feeder includes a body having a cavity. The cavity is shaped and sized to hold a supply of powder particles and is defined by a cavity wall. A diverter is disposed in the cavity and positioned away from the cavity wall so as to create a powder flow space between the diverter and cavity wall. The feeder includes an electrode and a powder landing surface connected to a power supply. The electrode is positioned remotely from the powder landing surface at a distance at which it can act upon powder resting upon the powder landing surface. An aperture through which powder particles may fall is disposed in or proximate to the powder landing surface. An insulator is positioned between the electrode and the powder landing surface. The power supply produces an alternating electric potential that creates an alternating electric field between the electrode and powder landing surface that causes powder particles to oscillate and eventually fall through the aperture. In an alternative embodiment, the powder landing surface is on a diaphragm connected to the body and disposed below the powder flow space. The diaphragm is sized and shaped to hold a quantity of powder falling from the powder flow space. The diaphragm includes an aperture. A vibration actuator is affixed to the diaphragm, which provides a vibratory force to the powder particles.