Abstract
The invention discloses a magnetic-gas position detection device. The magnetic-gas position detection device comprises a main body, an upper cover, a valve body, a diaphragm, a magnetic sheet, a valve element, a spring seat, a telescopic spring, a first containing cavity, a second containing cavity, a first through hole, a third containing cavity, second through holes, a fourth containing cavity, an exhaust opening, a gas supply opening, a signal opening, a valve hole, a magnetic ring and an annular groove, wherein the bottom of the main body is fixedly connected with the outer wall of an air cylinder, the outer edge of the top of the main body is fixedly connected with the outer edge of the bottom of the upper cover, the inner edge of the bottom of the upper cover makes contact with the outer edge of the top of the valve body, and the outer edge of the bottom of the valve body makes contact with the outer edge of the top of the diaphragm. According to the magnetic-gas position detection device, by detecting strong magnetic signals of the magnetic ring arranged on a piston, converting the strong magnetic signals into air pressure signals and outputting the air pressure signals, the motion position of the air cylinder is detected, no electric power is needed, limiting conditions are few, the applicability is high, the magnetic-gas position detection device can be applied to special occasions with anti-explosion requirements and the like, the structure is simple, detection is accurate, and the cost of a pneumatic system is low.
Description
technical field
[0001] The invention relates to the technical field of position detection devices, in particular to a magnetic-gas position detection device. Background technique
[0002] A cylinder is an actuator that converts compressed air energy into mechanical energy output in a pneumatic transmission system. It is generally composed of a cylinder barrel, an end cover, a piston, a piston rod, and a seal. It is usually necessary to detect the position of the piston rod during use. At present, there are mainly two types of traditional position detection methods: one is to install a magnetic switch on the cylinder barrel and a magnetic ring on the piston. When the cylinder moves, the piston drives the strong magnetic magnetic ring to move together. When the magnetic ring moves to When the magnetic switch is in position, the magnetic force of the magnetic ring acts on the reed switch of the magnetic switch, and the contacts of the reed switch are turned on or off, and then ...
