Negative pressure fish tank with internal overflow function and without vacuum pump

Abstract

The invention provides a negative pressure fish tank with an internal overflow function and without vacuum pumps, the fish tank belonging to the technique field of negative pressure fish tanks. By use of the negative pressure fish tank, problems that fish tanks by existing technology do not possess four-in-one function(filtration, circulation, oxygen supply and air exhaust), and thus specialized vacuum pumps and external overflow are necessary, are solved. The negative pressure fish tank comprises: a negative pressure tank body, a normal pressure tank body, a bottom tank for filtration and water supply device. The negative pressure fish tank is characterized by comprising: an internal overflow device constituted by an overflow pipe and an overflow pipe cap; a negative pressure generating device constituted by an exhaust tube, an ejector and a water pump. The overflow pipe is arranged inside the negative pressure tank body. The lower end of the overflow pipe goes through the bottom of the normal pressure tank body and connects to the atmosphere. The overflow pipe cap covers above the overflow pipe and keeps a certain distance with the overflow pipe opening. The upper end of the exhaust tube extends upwards to the top of the negative pressure tank body. The lower end of the exhaust tube goes through the middle part of the overflow pipe and connects to a gas introduction pipe of the ejector by a flexible pipe. The negative pressure generating device and the water supply device share the water pump by a tee joint. The top of the negative pressure tank is provided with an openable top cover.

Description

Technical field [0001] The invention belongs to the technical field of negative pressure fish tanks, and specifically relates to a negative pressure fish tank with internal overflow and no vacuum pump. Background technique [0002] The interactive negative pressure fish tank installed by Ocean World has a sealed top and negative pressure inside the fish tank. As there are vacuum pumps, pipelines, one-way valves and other components on the pumping line, the overflow drainage device is arranged outside the negative pressure cylinder, namely The side filter device cannot be hidden, which affects the beauty; the top of the negative pressure cylinder is not easy to clean; the prior art three-in-one water pump only has the functions of filtering, circulating, and oxygen supply, and the negative pressure generated by its air extraction function is too low to meet actual needs; With negative pressure fish tank technology, air extraction and oxygen delivery are carried out separately, whi...

AI Technical Summary

Problems solved by technology

[0002] The interactive negative pressure fish tank installed in Sea World has a sealed top and negative pressure inside the fish tank. Since there are various components such as vacuum pumps, pipelines, and one-way valves on the air extraction line, the overflow drainage device is arranged outside the negative pressure tank, that is, The side filter device cannot be hidden, which affects the appearance; the top of the negative pressure cylinder is not easy to clean; the existing three-in-one water pump only has the functions of filtration, circulation, and oxygen supply, and the negative pressure generated by its air extraction function is too low to meet actual needs; With negative pressure fish tank technology, air extraction and oxygen delivery are carried out separately, the control is complicated, and it is easy to cause water inflow to the air extraction device, and at the same time, it increases the workload of maintenance

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