3results about How to "Quantitative realization" patented technology

This invention discloses a microfluidic chip and a quantitative extraction method for trace liquids. The device includes a quantitative unit, an auxiliary quantitative unit, and an extraction and transport unit. The quantitative unit can be selectively connected to either the auxiliary quantitative unit or the extraction and transport unit. When the quantitative unit is connected to the auxiliary quantitative unit, it is connected to a second microfluidic channel via a first microchannel, allowing the quantitative chamber and the equilibrium chamber to communicate. A portion of the liquid injected through the injection port fills the quantitative chamber for quantitative liquid extraction, while excess liquid flows to the equilibrium chamber for storage. When the quantitative unit is connected to the extraction and transport unit, it is connected to a third microfluidic channel via the first microchannel, allowing the quantitative liquid in the quantitative chamber to be extracted from the outlet. This invention achieves quantitative extraction of trace liquids while reducing the requirements for liquid driving precision, thus improving quantitative accuracy and ease of operation.

The utility model relates to the technical field of adding devices, in particular to a quantitative adding device for a plant detergent, which is simple to operate, does not cause scattering of the plant detergent, avoids polluting hands or the environment, and is good in operation convenience. Comprising a quantitative tube, a quantitative chamber is arranged in the quantitative tube, and an upper opening communicated with the quantitative chamber is formed in the upper end of the quantitative tube; the lower end of the quantitative tube is provided with a lower opening communicated with the quantitative cavity, the threaded cap is sleeved on the outer wall of the lower portion of the quantitative tube and provided with internal threads matched with a packaging bottle opening, the cock is installed in the lower opening of the quantitative tube, the opener is arranged on the side wall of the middle lower portion of the quantitative tube, and the rubber plug is arranged on the opener. The quantitative piston is installed on the upper portion of the quantitative cavity of the quantitative pipe, a through hole is formed in the middle of the quantitative piston, the push rod is inserted into a center hole of the cock in a sliding mode, and the rubber plug is installed at the upper end of the push rod and can block the through hole of the quantitative piston.

The utility model discloses a kind of hoe type film mulching hole drill, comprising: tractor and hole opening and seeding assembly, tractor is provided with power output shaft, hole opening and seeding assembly includes: assembly installation frame, one side is provided with the transmission gear box being connected with power output shaft, transmission gear box is detachably connected with tractor by universal shaft;Film mulching device, set in the front lower part of assembly installation frame;Multiple hole opening and seeding mechanism, transverse arrangement is set in the middle part of general frame body, and hole opening and seeding mechanism includes the transmission shaft being connected with the output end of transmission gear box and seed guiding interface;Multiple seed bin device, lower end is provided with the discharge port being communicated with seed guiding interface, and seed bin device is used to regularly, quantitatively to hole opening and seeding mechanism inside seed is put in.The utility model realizes film mulching, film pressing, hole opening, precision seeding integrated continuous operation.