An airflow generating device includes a container, a first air switch, a second air switch, a magnetic oscillating element, and one or more coils. The container has a first opening and a second opening. The first air switch is configured to open or close the first opening. The second air switch is configured to open or close the second opening. The magnetic oscillating element is disposed in the container. The one or more coils are disposed adjacent to the magnetic oscillating element. The one or more coils are configured to generate at least one sensing current corresponding to the oscillation of the magnetic oscillating element, so as to make the first air switch and the second air switch respectively open or close the first opening and the second opening according to the at least one sensing current.

The invention relates to, inter alia, a thick matter conveying system (10) comprising a thick matter pump (16) for conveying a thick matter, comprising a double-piston-type core pump (15) which has a pump frequency; an S tube (24) which can be switched by the pump frequency; and a thick matter distributing mast (18) for distributing the thick matter to be conveyed, wherein the thick matter distributing mast (18) has at least two mast arms (41); a substructure (30) on which the thick matter distributing mast (18) and the thick matter pump (16) are arranged, said substructure (30) comprising a support structure (31) for supporting the substructure (30) by means of at least one horizontally and/or vertically movable support leg (32); a sensor unit (11) for sequentially detecting at least one piece of operating information at at least one first and second point in time; and a processing unit (12) which is designed to determine a stability parameter of the thick matter conveying system (10) on the basis of the at least one piece of operating information detected at the first point in time, the at least one piece of operating information detected at the second point in time, and the pump frequency.

A low-force, non-displacement, micro/miniature valve and/or pump assembly is provided. A tube component having a first side port coupled to an inlet portion and a second side port coupled to an outlet portion can be selectively moved to alternatively couple the side ports to a first or second piston pump chamber. First and second pistons can be actuated after positioning the tube component to either draw in fluid or push out fluid from either the first or second piston pump chambers during each actuation of the pistons. The fluid can be drawn in from a reservoir and can be expelled to a patient for providing a dose of the fluid to the patient.

Disclosed is, inter alia, a thick matter distributor mast (18) for distributing a thick matter to be conveyed by means of a thick matter pump (16), having a slewing gear (19) which can be rotated around a vertical axis at a maximum rotating speed; a mast assembly (40) having at least a first mast arm (41) and a second mast arm (42), wherein the first mast arm (41) is connected to the slewing gear (19) at a proximal end of the mast assembly (40), and wherein the mast arms (41, 42) each have a maximum operating range; a conveying line (17) which extends across the mast assembly (40) and comprises a proximal end, which is connectable to an outlet (28) of a thick matter pump, and a distal end, wherein the distal end of the conveying line (17) transitions to an end hose (45) at a distal end of the mast assembly (40); a receiver unit (11) for receiving at least one item of operational information; a processing unit (12) for determining a currently permissible operating range of the first mast arm (41) and the second mast arm (42) respectively and/or for determining a currently permissible slewing gear speed, each depending on the at least one received item of operational information; and a control unit (13) for limiting the operating range of the corresponding mast arm (41, 42) to the respective currently permissible operating range if one of the determined currently permissible operating ranges of the first mast arm (41) and the second mast arm (42) is smaller than or equal to the respective maximum operating range, and/or to limit the rotating speed of the slewing gear (19) if the determined currently permissible rotating speed is less than or equal to the maximum rotating speed.

An airflow generating device includes a container, a first air switch, a second air switch, a magnetic oscillating element, and one or more coils. The container has a first opening and a second opening. The first air switch is configured to open or close the first opening. The second air switch is configured to open or close the second opening. The magnetic oscillating element is disposed in the container. The one or more coils are disposed adjacent to the magnetic oscillating element. The one or more coils are configured to generate at least one sensing current corresponding to the oscillation of the magnetic oscillating element, so as to make the first air switch and the second air switch respectively open or close the first opening and the second opening according to the at least one sensing current.

An oscillation apparatus, system, and method are provided for creating pulsing pressure waves in a fluid flow that can be used to open and close flow paths for fluid flow in a reservoir, mixing a fluid, or keeping a particulate suspension homogenous in a fluid. The system includes an oscillation apparatus including a motor and an oscillating valve that rotates at a particular speed and frequency while a pump circulates a fluid through the oscillation apparatus, which outputs the fluid in a pulsing wave. The apparatus or system may further include one or more sensors and a control system that control the speed and the frequency of the rotation of the oscillating valve.