A delivery system for mixing and dispensing a gel stemming material into a blast hole is disclosed. The system includes a dual-pump assembly in fluid communication with respective sources of a first gel precursor fluid and a second gel precursor fluid; a pair of hoses associated with a means to vary an effective length of said hoses; a dosing head having a first inlet and a second inlet, said inlets arranged in respective fluid communication via said hoses with the dual pump assembly to receive the first and second gel precursor fluids, the dosing head being configured to receive and mix the first and second gel precursor fluids to produce the gel stemming material and to dispense the gel stemming material via an outlet. In use, the effective length of the hoses may be varied to position the dosing head and dispense the gel stemming material in the blast hole.

A mixing device is configured for the continuous provision of a gelling mass for a molding machine. The mixing device includes an inlet, an outlet and a conduit section which is situated between the inlet and the outlet and into which at least one admixing conduit runs out, via which admixing conduit a substance to be admixed can be fed such that the substance to be admixed is mixed with a base mass which is fed through the inlet, in a mixing region in the conduit section. The mixing device is configured in a manner such that the spatial distance between the outlet and the mixing region in which the substance to be admixed is mixed with the base mass, can be changed. A molding machine with such a mixing device and to a method for processing a flowable and gellable mass are provided.

In some examples, a mixing device is configured to receive a fluid flow in an inlet section and accelerate the fluid flow in a nozzle section fluidically coupled to the inlet section. The nozzle device is configured to discharge the fluid flow to an outlet section. The outlet section includes one or more suction ports configured to draw a material into the fluid flow via the suction ports. In some examples, the mixing device is configured to be secured to a container configured to hold a medical solution comprising the fluid flow and the material. In some examples, the mixing device is included in a mixing system configured to produce a medical solution.

The invention discloses a low-energy consumption solvent dilution device for pre-treating samples comprising an accommodating unit, the accommodating unit including a case and an accommodating portion arranged inside the case; an input unit, which including an inlet, a second outlet and a third outlet extending into the case; a cleaning unit, which including a receiving assembly arranged below the second outlet and the third outlet, and a conveying assembly communicated with a receiving assembly. The input unit including a first tube connecting with the inlet, and a second tube and a third tube extending out of the second outlet and the third outlet, respectively. The present invention completes dispensing and diluting the sample fixative in the box, the dispersion of the fixative is reduced. Avoid unnecessary contact for operators. It improves the safety and accuracy of the experiment, and significantly reduces energy consumption and labor costs.