Water-retention slow-release fertilizer's water-absorbing capacity determination device and method
A slow-release fertilizer and measuring device technology, applied in the field of water retention performance measuring devices, can solve the problems of easy clogging of the screen, water error, unsatisfactory water absorption, etc., and achieve the effects of reducing residues and improving accuracy
Active Publication Date: 2015-05-06
CNSG ANHUI HONG SIFANG FERTILIZER IND CO LTD
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Problems solved by technology
This method is relatively simple, but it is not satisfactory when used to detect the water absorption of fertilizers. The main reason is that part of the nutrient ions in the fertilizer are lost with the water during filtration, so the quality of water absorption cannot be judged.
In addition, the water-retaining agent that has absorbed water is easy to block the screen, causing the fertilizer to be partially wet or it is difficult to filter out excess water, so the measured water will also cause a large error
Method used
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[0021] The present invention provides a measuring device. Two filtering devices are arranged in the suction filter bottle, which can be used for replacement by simulating the pouring method, which solves the problem that the sieve plate holes are blocked due to the water-retaining agent swelling and the suction filtration is difficult; The peristaltic pump can reduce the water residue on the pipe wall, adjust the peristaltic pump to ensure the uniformity of the water flow speed, set a uniform sand core board, and maintain the same conditions when the fertilizer absorbs water and filter, which improves the accuracy of the measurement results; The device can carry out multiple sets of fertilizer water absorption tests at the same time, which improves work efficiency.
[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
[0023] Please re...
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The invention relates to a device and a method for determining water-absorbing capacity of a water-retention slow-release fertilizer. The device comprises a water outlet and inlet part and a suction filtration device. The water outlet and inlet part comprises a water tank, a peristaltic pump, a transparent flexible pipe and a waste liquid receiver. The suction filtration device comprises an iron stand and a suction filtration bottle. The suction filtration bottle is arranged on the iron stand. The upper end of the suction filtration bottle is provided with a charging hole. The lower end of the suction filtration bottle is provided with a water inlet / outlet and a corker valve, and a sand core plate is arranged above the water inlet / outlet and the corker valve. Upper portions of sidewalls of the suction filtration bottle are symmetrically provided with openings: one end is a cleaning port; and the opposite end is provided with a filter unit of the sand core plate. The determination method comprises steps of: dissolving the water-retention slow-release fertilizer into excessive water, filtering water which hasn't been absorbed by the fertilizer after the fertilizer is completely wet, and placing the fertilizer into a drying oven for drying. Quality difference before and after drying is the water-absorbing capacity of the fertilizer. According to the invention, the water-absorbing capacity of the water-retention slow-release fertilizer is accurately determined by a simple effective mode, thus effectively controlling the product quality.
Description
Technical field [0001] The invention relates to a device and method for measuring water retention performance, in particular to a device and method for measuring the water absorption of a water retention slow-release fertilizer. Background technique [0002] In some areas of my country, there is little rainfall, the soil has poor water and fertilizer retention capabilities, nutrients and water are easily lost, and crop yields and quality are low. Therefore, the development of water retention slow-release fertilizers suitable for different crops and with certain water and fertilizer retention capabilities will help To promote the development of water-saving agriculture and ecological agriculture in China. [0003] The water-retaining agent contains a large number of strong water-absorbing groups with specific structure, which can absorb and retain water that is hundreds or even thousands of times its own weight, is non-toxic and harmless, and can repeatedly release and absorb water. ...
Claims
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IPC IPC(8): G01N5/04
Inventor 方立贵谢中平陈勇樊荣琦刘晓晖王莉束维正
Owner CNSG ANHUI HONG SIFANG FERTILIZER IND CO LTD