An automatic cleaning device for seed absorbing needles of a vacuum planter comprising:
- a seed distributing member comprising:
- a rectangular vacuum rack including an upper portion having a pair pulleys at two ends thereof respectively sliding into an arcuate sliding slot of a pair of lateral plates which are spacedly projected upward from a U-shaped support under said vacuum rack near said two ends thereof, a first pneumatic pump rotatably pivoted to a vertical plate which is projected upward from a top of said U-shaped support, a tubular plunger including a first end slidably engaged into lower end of said first pneumatic pump and a second end connected to the upper portion of said vacuum rack through a first air vent thereof, a branch means connected to a front side of the upper portion having three branches connected to the first air vent and the interior of said upper portion for dispersing air pressure from the first air vent to the entire interior of said vacuum rack, and a plurality of first vertical thru holes spacedly formed in the upper portion along the length thereof;
- a lower portion having a plurality of second vertical thru holes made in registry with the first vertical thruholes for releasable connecting the lower portion to the upper portion including a rubber sealing means engaged thereinbetween around four sides thereof, a plurality of second air vents spacedly formed in the lower portion along the length thereof and a plurality of tubular needles having their upper ends connected to the second air vents respectively communicating to the tubular plunger and their lower end extending downward;
- a seed planting member disposed under said tubular needles and having two ends respectively secured to a lower end of said lateral plates, said seed planting member comprising a rectangular body, an upper plate including a plurality of first aligned thru holes of taper section formed spaced apart along the length thereof and made in alignment with the tubular needles of said vacuum rack;
- a lower plate connected to the upper plate with a pair of cushion means engaged thereinbetween abutting two ends thereof to define a clearance therebetween for slidably receiving a slider plate therein, a plurality of second aligned thru holes spacedly formed in registry with the first aligned thru holes of the upper plate, a plurality of planting pipes having their tops engaged into the second aligned thru holes respectively and their lower ends extending downward, a plurality of side projections spacedly projected upward from an outer side of the lower plate and a second pneumatic pump disposed to an inner side of the lower plate and connected with the slider plate.