Application volume variable fertilizing equipment
A variable volume technology, applied in fertilization devices, liquid fertilizer distribution, direct liquid fertilizer delivery systems, etc., can solve the problems of long absorption cycle and low absorption efficiency, reduce the absorption cycle, improve absorption efficiency, and improve sealing performance Effect
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Embodiment 1
[0028] Such as figure 1 As shown, the fertilization equipment with variable volume is composed of a perfusion tube 1, a piston 2, a piston rod 3, a retaining ring 4, a sealing plate 5, a spring 6, a support body 7, a liquid storage tank 8 and a sliding fixed body 11; the perfusion tube 1 is a hollow structure, the bottom of the perfusion tube 1 is pointed, and a liquid outlet hole 102 is opened on the outer surface of the bottom of the perfusion tube 1; the support body 7 is fixed in the perfusion tube 1, and multiple passage holes are opened on the support body 7 71; the retaining ring 4 is fixed in the perfusion pipe 1, and the retaining ring 4 is located above the support body 7; the sealing sheet 5 is arranged in the perfusion pipe 1, and the sealing sheet 5 is located between the support body 7 and the retaining ring 4, and the sealing sheet 5 and the perfusion There is a gap between the inner surfaces of the tube 1; the spring 6 is arranged in the perfusion tube 1, one e...
Embodiment 2
[0035] Such as figure 1 As shown, this embodiment is based on Embodiment 1, the bottom of the retaining ring 4 is provided with a locking groove 41 ; the top of the sealing sheet 5 is provided with a snap ring 51 corresponding to the locking groove 41 .
[0036] The snap ring 51 and the snap groove 41 are provided to avoid misalignment of the retaining ring 4 and the sealing sheet 5 and improve the sealing performance.
Embodiment 3
[0038] Such as figure 1 As shown, on the basis of Embodiment 1, this embodiment further includes a one-way valve 9 disposed in the flow hole B101 , and the one-way valve 9 leads into the perfusion tube 1 .
[0039] A one-way valve 9 is set to prevent the liquid fertilizer from flowing back into the liquid storage tank 8 when the piston 2 is pressed down.
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