Combined jet fish pump

Abstract

The invention relates to a combined jet fish pump comprising a water delivery regulating box group which is sleeved outside a drain conical pipe and comprises a drain tank, a steady flow box and a variable flow box respectively, wherein the interior of the drain tank is respectively separated by water separating plates along the shaft axis of the drain conical pipe; drain holes are arranged on the wall of the drain conical pipe; an overflow opening is respectively arranged at the lower part of each water separating box; the downward side of the steady flow box is communicated with the variable flow box; the downward side of the variable flow box is communicated with an outer water pipe; an upper valve port is arranged between the steady flow box and the variable flow box; a lower valve port is arranged between the variable flow box and the outer water pipe; a two-way valve rod penetrates in the upper and the lower valve ports; when the valve rod moves downwards, the upper valve port is closed and the lower valve port is opened; when the valve rod moves upwards, the upper valve port is opened and the lower valve port is closed; the two-way valve rod moves up and down along with the height variation of a floating body in the steady flow box; and the variable flow box is connected with a water suction port of a water pump. The combined jet fish pump disclosed by the invention is simple in structure and has the advantages that the suction ability is increased by about 4 times; the density of fish and water pumped for a jet device in the box is increased through draining; and the working efficiency is increased for the fish pump.

Description

technical field [0001] The invention relates to a combined jet fish suction pump, which belongs to the technical field of fishery equipment engineering. Background technique [0002] China is a big country in aquatic product breeding. With the modernization of fishery, fish suction pumps have been put into use more and more as related supporting equipment for cage fish farming. At present, different styles of fish suction pumps have been developed at home and abroad. Such as centrifugal fish suction pump, pneumatic fish suction pump, vacuum type fish suction pump, jet type fish suction pump, etc. Among them, the jet type fish suction pump has less damage to live fish, simple structure, convenient manufacture, and low cost. Advantages, but the efficiency of the jet pump is low, generally only one-third of the power of the water pump. [0003] Existing jet-type fish suction pumps, such as figure 1 As shown, it includes a fish suction pipe 1, the fish suction pipe 1 is connec...

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is: the efficiency of the traditional jet-type fish suction pump is low, the water flow ra

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