Multi-channel jet pumps

The invention relates to a multi-channel jet vacuum pump, and belongs to the technical field of injection pumps pumping fluid through the inertia of the fluid to be pumped. The multi-channel jet vacuum pump comprises a submersible pump, a jet device and a vacuum tank. The jet device comprises a jet box with an outlet. A left clamping plate and a right clamping plate attached to the left clamping plate are arranged in the jet box. A jet liquid inlet pipe which penetrates through the left clamping plate and is perpendicular to the left clamping plate is arranged in the center of the left clamping plate, and the inlet end of the jet liquid inlet pipe is communicated with the outlet of the submersible pump. A plurality of jet nozzles communicated with the jet liquid inlet pipe are arranged between the left clamping plate and the right clamping plate and uniformly distributed in the circumferential direction of the center of the jet liquid inlet pipe. The diameter of each jet nozzle is 8-20 mm. The outlet end of each jet nozzle is opposite to the outlet of the jet box. An air inlet pipe communicated with each jet nozzle is arranged on the edge of the right clamping plate and communicated with the outlet of the vacuum tank. The multi-channel jet vacuum pump has the advantages that the bearing pressure is large and the cleaning performance is good.