An apparatus for discharging multi-component adhesives of at least two fluidic components onto a granular ballast bed of a railway rail train includes of at least two separate carriages, which can be transferred into a vehicle or a trailer by having the vehicle or the trailer equipped on the inside with rails onto which the carriages can be rolled. The wagons can thus be transported by road to the usage site and can be put into operation by placing them from the trailer onto the tracks of the railway track using extendable rails. The apparatus allows the fully automatic spreading of adhesives over long distances to a ballast bed, so that the ballast bed is bonded in so that trains can continue to run normally. The entire apparatus can be loaded, transported and unloaded on site and put into operation by just two persons.

A method for metering a liquid or pasty product in a pressure-regulated manner, has the following steps: metering the product into a mixing chamber using a metering pump; ascertaining a product pressure of the product according to the mixing chamber; ascertaining a deviation of the product pressure from a specified target pressure; and opening or closing a pressure regulating valve provided on an outlet nozzle of the mixing chamber based on the pressure in order to equalize the product pressure and the target pressure, wherein the product pressure is reduced when the pressure regulating valve is opened and increased when the pressure regulating valve is closed.

A fluid dispensing system includes a pump, a valve, and a dispenser disposed downstream of the valve and connected to the valve with a hose. To provide a steady flow rate at the dispenser, the pump charges the fluid to or above the pressure required to achieve a desired flow rate. The valve cycles between open and closed at a fixed frequency. The valve-open time is varied within that frequency to maintain the desired flow rate.

A fluid delivery system includes a conduit. The conduit is configured to deliver a fluid. The conduit further includes a first electrically conductive element configured to deliver electricity through a length of the conduit. The fluid delivery system further includes master hub disposed on a fluid delivery device. The fluid delivery system also includes at least one slave hub disposed on the conduit and communicatively coupled to the master hub.

The invention relates to the application of liquid active substances with the aid of a portable spray device. The subject matter of the present invention is a portable device for applying active substances, and a method for applying active substances with the aid of a portable spray device.

The invention relates to the application of liquid active substances with the acid of a portable spray device. The subject matter of the present invention is a system comprising a portable spray device and a replaceable cartridge that contains an active substance concentrate. The invention also relates to method for applying a liquid active substance formulation. In addition, the invention discloses a replaceable cartridge that has a memory unit in which information is stored relating to an adjustable dilution ratio for the active substance concentrate contained in the cartridge. The invention also relates to a spray device comprising a control unit that can be read out a memory unit of cartridge attached to the spray device and, on the basis of the read out information, adjust a dilution ratio for the active substance concentrate contained in the cartridge.

A fluid delivery system includes a first pressure sensor disposed on or near a spray gun and configured to monitor a first fluid, and a second pressure sensor disposed on or near the spray gun and configured to monitor a second fluid. The fluid delivery system further includes control system comprising a processor configured to receive a first signal from the first pressure sensor and to receive a second signal from the second pressure sensor. The processor is further configured to derive a pressure difference between the first and the second pressure sensor representative of a fluid pressure difference between the first fluid and the second fluid and to control one or more pumps to obtain a desired pressure difference.

A fluid delivery system includes a smart hose. The smart hose includes a fluid conduit configured to deliver a fluid. The smart hose further includes a first electrically conductive element configured to deliver electricity through a length of the smart hose. The fluid delivery system further includes master hub disposed on a fluid delivery device. The fluid delivery system also includes at least one slave hub disposed on the smart hose and communicatively coupled to the master hub.

A multi-component fluid delivery system includes a first fluid pump and a second fluid pump. The first and the second fluid pumps are not mechanically coupled to each other. The multi-component fluid delivery system further includes a control system comprising a processor configured to derive a slip ratio for the first fluid pump and the second fluid pump. The processor is additionally configured to apply a master-slave motor control to deliver a specified fluid ratio via the first and the second fluid pumps based on the slip ratio.

The invention relates to the application of liquid active substances with the aid of a portable spray device. The subject matter of the present invention is a portable device for applying active substances, and a method for applying active substances with the aid of a portable spray device.