The utility model discloses a capacitive liquid level sensor, which comprises a circular tubular outer cylinder sleeve and an inner cylinder sleeve which are arranged coaxially, a tubular cavity is formed between the outer cylinder sleeve and the inner cylinder sleeve, two arc-shaped metal plates are fixedly arranged at the top of the cavity towards the cavity, two metal plates are symmetrically distributed in the center, the inner cylinder sleeve is provided with an appropriate cylindrical floating block, and the floating block is towards one end of the top of the inner cylinder sleeve A cylindrical metal block is arranged on the surface, and the floating block drives the metal block to rise and fall between the two metal plates; the outer cylinder sleeve, the inner cylinder sleeve, the sealing ring, the baffle plate and the floating block are insulated. The beneficial effect of the utility model is to change the capacitance value between the metal plates through the rise and fall of the metal block in the electric field between the two metal plates, in addition, the metal plates are arranged in the closed insulated cavity through the cooperation between the inner cylinder sleeve, the outer cylinder sleeve and the sealing ring, so as to reduce the corrosion and damage of the plates and extend the service life of the liquid level sensor and the water quality sensor.
【技术实现步骤摘要】
一种电容式液位传感器
本技术涉及传感器领域,特别涉及一种电容式液位传感器。
技术介绍
随着人们生活水平的提高,很多家庭都在家里摆设鱼缸进行养鱼,但鱼缸中的水位太低会影响鱼类的活动范围,水位太高鱼缸中的水就容易随鱼类游动而溅出而且鱼类也容易蹦出水面。此外,智能马桶在家庭中也占有率越来越高,智能马桶中也需要液位传感器对马桶中的液位进行检测。常见的液位测量方式包括浮球式检测、电容式测量、静压式测量等,其中电容式测量成本较低在市场上比较流行,其主要通过检测由于液面高度变化而导致的电容值变化来测量液位高度,但是电容式的液位传感器长期浸泡在液体中容易使其受到溶蚀和损坏,影响其测量准确性和使用寿命。
技术实现思路
本技术要解决的技术问题在于提供一种不易损坏的电容式液位传感器。为解决上述技术问题,本技术是通过以下技术方案实现的:一种电容式液位传感器,其特征在于:包括同轴设置的圆管状外筒套和内筒套,所述外筒套套设在内筒套外,所述外筒套和内筒套之间形成管状空腔,所述空腔的顶端和底端设有将所述空腔进行密封的环形密封圈,所述 ...
【技术保护点】
1.一种电容式液位传感器,其特征在于:包括同轴设置的圆管状外筒套和内筒套,所述外筒套套设在内筒套外,所述外筒套和内筒套之间形成管状空腔,所述空腔的顶端和底端设有将所述空腔进行密封的环形密封圈,所述空腔中朝向空腔的顶端固设有两片弧形金属极板,两片金属极板呈中心对称分布,所述内筒套中设有适配的圆柱状浮块,所述内筒套的顶端和底端设有将所述浮块限制在内筒套中的挡板,所述挡板开设有至少一个供水流入及流出的开口,所述浮块随内筒套内的水位变化在内筒套中升降;所述浮块朝向内筒套顶端的一端面上设有圆柱状金属块,所述浮块驱动金属块在两片所述的金属极板之间升降;所述外筒套、内筒套、密封圈、挡板和浮块均绝缘。/n
【技术特征摘要】
1.一种电容式液位传感器,其特征在于:包括同轴设置的圆管状外筒套和内筒套,所述外筒套套设在内筒套外,所述外筒套和内筒套之间形成管状空腔,所述空腔的顶端和底端设有将所述空腔进行密封的环形密封圈,所述空腔中朝向空腔的顶端固设有两片弧形金属极板,两片金属极板呈中心对称分布,所述内筒套中设有适配的圆柱状浮块,所述内筒套的顶端和底端设有将所述浮块限制在内筒套中的挡板,所述挡板开设有至少一个供水流入及流出的开口,所述浮块随内筒套内的水位变化在内筒套中升降;所述浮块朝向内筒套顶端的一端面上设有圆柱状金属块,所述浮块驱动金属块在两片所述的金属极板之间升降;所述外筒套、内筒套、密封圈、挡板和浮块均绝缘。
2.根据权利要求1所述的一种电容式液位传感器,其特征在于:所述开口在所述挡板上呈均匀分布的扇形。
3.根据权利要求1所述的一种电容式液位传感器,其特征在...
【专利技术属性】
技术研发人员:赵升,方量,方向斌,吴泽平,朱嘉炜,李丹阳,
申请(专利权)人:温州大学,
类型:新型
国别省市:浙江;33
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