Table-type reversed-filtering recharging and water-drawing dual-purpose well head device

Abstract

The invention discloses a self-seeping-type underground-water recharging and water-drawing dual-purpose well head device, and belongs to the technical field of intersection of water retention and watering. The well head device comprises a recharging well cover and a water drawing device. The well head device is characterized in that the recharging well cover is composed of a well-head top cover body, a water-drawing-device fixing ring beam and a geotextile reversed-filtering layer; the whole well cover is a hollow bottomless square table body; a square hole defined by the water-drawing-device fixing ring beam is formed in the middle of the top face of the upper portion of the well-head top cover body; circular water inlets are formed in the top face and the side face of the upper portion of the well-head top cover body; the lower portion of the well-head top cover body is a waterproof body; the geotextile reversed-filtering layer is arranged on the outer side of the well cover, and matched with the well cover in shape. The water drawing device is composed of a water drawing pump, a water pump water pipe, a water pump support and a water pump valve. The water drawing pump is a common submersible pump; the water pump support is a steel frame and is fixed to the water-drawing-device fixing ring beam. By means of the well head device, the organic combination of underground-water recharging and underground-water drawing is achieved, and the well head device has the advantages of being large in recharging quantity, capable of filtering particles in water, resistant to silt and impact and capable of preventing recharging of low-water-level sewage.

Description

technical field [0001] The invention relates to a dual-purpose wellhead device with dual functions of self-seeping groundwater recharge and groundwater pumping, and belongs to the technical field of crossing water retention and water use. Background technique [0002] With the rapid development of social economy, the contradiction between supply and demand of water resources has become increasingly prominent. Due to the over-exploitation of groundwater, many provinces have formed a large area of ​​groundwater level decline funnel centered on the city, and many environmental geological problems have also emerged. In the face of the above problems, artificial groundwater recharge is a more active and effective strategy and an important technical means to maintain the balance of groundwater recharge. At the same time, in the dry season, groundwater needs to be pumped to make up for the shortage of surface water resources. At present, in areas where groundwater is mainly artif...

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Problems solved by technology

[0008] In order to solve the above-mentioned bottleneck problem, the present invention provides a dual-purpose de

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