air compression ignition instrument air work thermal energy mechanical energy junior and senior high school physics teaching aids science and education instruments

Remark: Please confirm when placing an order (due to the real-time changes of stock).

Air compression ignition device, including a transparent cylinder connected to the base, a pressure rod in the cylinder, one end of the pressure rod through the cover and the pressure cap connected, the other end of the pressure rod fixed with a piston matching the cylinder, the pressure rod can move up and down with the top of the piston connected, the cylinder is set with a discharge hole through the cylinder, the bottom of the cylinder is set with a ventilation valve. The beneficial effect of this utility model: since the upper end of the tube opens a discharge hole with a diameter of about 5mm, without opening the cover, by lifting the piston to the small hole position, it can be added to the small hole lead wrapped....., after multiple experiments, the lead can be poured out, the discharge hole can also play a role in ensuring the safety of the experiment, when used... a little more, it can only hear the slight explosion sound of the discharge hole, no longer impact the cover.