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首部 过滤 施肥 电子阀控系统

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水肥一体机设备运行及控制原理:

1、施肥流程:

首先将溶好的肥液加入施肥罐中,开启主水泵,通过调节阀门将罐中注满水后,关闭注水阀门(过程中灌溉阀门可一直打开)。施肥时,通过控制柜中的“时间旋钮”调节所需施肥时间,注入泵启动,罐中肥料通过注入泵注入主管路水中,浇地同时完成施肥工作。注入肥流速可通过“带刻度的调节阀门”进行调节。此过程中,注入泵的压力控制将根据出水压力自行启停水泵,既能使肥液匀速注入农田,又对注入泵起到保护作用。

2、水泵启停控制:

主水泵及注入泵均可通过“时间旋钮”调节设备运行时间,当运行至指定时间时自动停止。设备入水口处装有压力控制设备,当因管路堵塞(如过滤器堵塞)时,管路中压力过大,将自动切断主水泵;施肥罐中装有液位传感器,当施肥罐中肥液已抽完时,将自动切断注入泵电源。以上两种设计均对水泵起到保护的作用。

3、系统过滤:

本设备共有两层过滤设计,在施肥罐出水口处装有过滤器,对肥液进行一次过滤;在设备出水口处也装有过滤器,对整个肥水进行二次过滤。

4、设备止回:

在设备入水口处装有单向止回阀,防止肥水倒流污染地下水;在施肥罐出水管中也装有单向止回阀,防止主管路水倒灌,以确保施肥工作正常运行。

5、流量统计:

在设备出水口处装有电子流量计,用于统计单次或累计水肥量。

6、系统排渣:

7.在施肥罐侧方底部设有排渣孔,用于排渣及清洗施肥罐

水肥一体化技术的发展概况、研究和推广应用中存在的问题,喷灌的特点及适应范围、喷洒原理及基本参数、喷灌主要设备、设计要求及布置,微灌的特点及分类、微灌的原理及基本参数、微灌的设备、工程设计、运行与,水肥一体化的施肥特点、设备及肥料选择和配制等。下篇为水肥一体化技术在农业生产中的应用。具体列举了玉米、小麦、马铃薯、大豆、甘蔗、茶叶、棉花、油菜、葡萄、香蕉、荔枝、西瓜、柑橘、苹果、叶菜类、茄果类及瓜类蔬菜的水肥一体化技术规程。

8.水肥一体机融合了灌溉与施肥为一体新。水肥一体化设备是借助压力(或地形自然落差),将可溶性固体或肥料按土壤养分含量和作物需肥规律和特点,配兑成的肥液与灌溉水一起相融后利用可控管道,通过管道和滴头形成滴灌,均匀、定时、定量作物根系发育生长区域,使主要根系土壤一直保持疏松和适宜的含水量。


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