A new type of water circulation vacuum pump with compact structure and small volume

The utility model discloses a water circulating vacuum pump, which comprises a water tank, a driving motor arranged at the upper part of the water tank, a pump body driven by the driving motor arranged at the lower part of the water tank, and a drainage pipe connected with the outlet of the pump body. The drainage pipe is connected with four jets through the connecting pipe and is located at the water tank. A three-way pipe is connected on the side wall of each jet through a check valve, and the other two ports of the three-way pipe are respectively connected with a vacuum meter and a suction nozzle. The utility model has the advantages that four jets are connected through connecting pipes on the drainage pipe of the pump body, a three-way pipe is connected through a backstop valve on the side wall of each jet, and the other two pipes of the three-way pipe are respectively connected with a vacuum meter and a suction nozzle, so that four people can be simultaneously realized. The operation is not only convenient for teachers to visually demonstrate teaching, but also has the advantages of small size and compact structure.technical fieldThe utility model relates to a vacuum pump for teaching, in particular to a water circulation vacuum pump.To achieve the above purpose, the utility model can adopt the following technical scheme: the utility model comprises a water tank, a driving motor arranged at the upper part of the water tank, a pump body driven by the driving motor arranged at the lower part of the water tank, and a drainage pipe connected with the outlet of the pump body. The drainage pipe passes through a connecting pipe. There are four fluidizers, each fluidizer side wall is connected with a three-way pipe through a check valve, and the other two pipe orifices of the three-way pipe are respectively connected with a vacuum meter and an air extraction nozzle.In order to purify circulating water, a filter hose is arranged at the outlet of each jet.

The utility model has the advantages that four jets are connected through connecting pipes on the drainage pipe of the pump body, a three-way pipe is connected through a backstop valve on the side wall of each jet, and the other two pipes of the three-way pipe are respectively connected with a vacuum meter and a suction nozzle, thus realizing the simultaneous operation of four persons. The operation is not only convenient for teachers to visually demonstrate teaching, but also has the advantages of small size and compact structure.