The invention relates to a veterinary needleless
injector comprising
drug containing tube components, an
injector and a
high pressure air supply; the
injector includes a magnetic thrust
piston arranged inside a cavity on a housing; a pure iron locating part corresponding to the magnetic thrust
piston is arranged in the cavity; a
tail rod end protrudes out of the housing; the rod end of the magnetic thrust
piston is movably connected with a
piston rod of an injection piston inside an injection
syringe arranged at the front end of the housing; an injection head is arranged at the front end of the injection
syringe; a
drug inlet port on one side is connected with the outlet port of the
drug containing tube components through
pipe fittings; a switch plug is arranged at one end of the inside of a through cavity at the lower part of the housing; the outer end is in contact with the side surface of a trigger; a hollow gas circuit movable switch plug corresponding to the switch plug is arranged on the other side in the cavity; and a spring is arranged at the
tail end which is connected with the
high pressure air supply through
pipe fittings. The invention has the advantages of
rapidity, high efficiency, no infliction of pain on animals,
continuous injection, accurate control of dosage, controllable and adjustable
injection pressure for
livestock, effective prohibition against
cross infection and good safety.