This invention relates to the field of tissue sectioning and sampling technology, and discloses a tissue sectioning device for
plant quarantine. The device includes a hand-cranked drive
assembly, a
piston flow control
assembly, an adjustment
assembly, a feedback deceleration assembly, and a transfer assembly. The lifting block is linked to the
piston block through the
piston rod, and during the
cutting stroke, it pulsarily presses liquid into the liquid flow chamber next to the
slicing blade, generating a pulsed liquid flow synchronized with the
slicing rhythm, realizing non-contact guiding and transferring of the
wax strip. When
cutting hard
plant tissue, causing a sudden increase in
cutting load, the load increases the pressure in the
piston cylinder and pushes the adjustment assembly to switch the flow path. The feedback deceleration assembly converts the pressurized liquid into a normal clamping force of the push block on the turntable, thereby increasing the torque required for the rocker wheel to continue rotating and reducing the risk of
impact damage during the cutting of
hard tissue. This invention organically combines pulsed liquid flow transfer with hydraulic resistance increase and deceleration, providing a
slicing solution with strong sample protection for
plant quarantine.