Negative pressure fish tank watched from all around

Abstract

The invention provides a negative pressure fish tank watched from all around, and belongs to the technical field of negative pressure fish tanks. The negative pressure fish tank mainly solves the problems in the prior art that a check valve is likely to be not tightly closed and cause water leaking accordingly impurities are likely to be accumulated near the check valve and an air pumping pipe opening and clog the opening, and cleaning is difficult. The negative pressure fish tank comprises a negative pressure tank body, a common pressure tank body, a bottom tank body, a water pump, a negativepressure generator, an overflow drain pipe and a diffuser; the negative pressure fish tank is characterized by further comprising an air pumping water supply assembly and a water return device; the air pumping water supply assembly comprises a locating plug, a water supply pipe, an assembly connector, an assembly body, an air pumping pipe and a sealing part, wherein the locating plug, the water supply pipe, the assembly connector, the assembly body, the air pumping pipe and the sealing part are fixedly connected to the top of the negative pressure tank body; the water supply pipe is insertedon the assembly connector, the water return device comprises a water return cap, a water delivery pipe, a water return pipe, a water return body, an oxygen supply water outlet, a water return water outlet, a water return connector and a locking nut, the oxygen supply water outlet is formed in the upper portion of the water return pipe and is communicated with the diffuser, the water return cap covers the upper end of the water return pipe in a sealing mode, and flow intercepting small holes are formed in the side wall of the water return cap.

Description

technical field [0001] The invention belongs to the technical field of negative pressure fish tanks, and in particular relates to negative pressure fish tanks for viewing around. Background technique [0002] The technique adopted in the negative pressure fish tank for viewing around the prior art is: central air pumping and central overflow, diffuser for oxygen supply, negative pressure generator to generate negative pressure, bottom tank for filtration and check valve installed on the water supply pipeline. [0003] For the single-type negative pressure fish tank with surrounding views, the shape of the top view is square, round or hexagonal, etc., because the oil on the top water surface is not circulated smoothly, it is difficult to remove, and near the exhaust pipe, it is easy to accumulate impurities to block the nozzle, making it dirty. Dirt easily enters the exhaust pipe, blocks the negative pressure generator, and affects the extraction. [0004] The outlet of the ...

AI Technical Summary

Problems solved by technology

[0005] The pressure of the existing aquarium pump is not high enough, using a spring check valve, the spring will not be completely compressed in a static state, but in a dynamic state of expansion and contraction, resulting in loud noise, easy wear and tear of the valve core, fatigue and breakage of the spring; no spring check Due to the small back pressure generated by the positive pressure water level of the fish tank, the valve is easy to close laxly and cause water leakage; installing a check valve in the water pump outlet pipe becomes a big hidden danger. When the check valve is damaged and replaced, it is a disaster for negative pressure fish tanks

Existing check valves are not suitable for negative pressure fish tanks

Images