Inlet and outlet base of multistage centrifugal pump

Abstract

The invention relates to the technical field of centrifugal pumps, in particular to the water inlet and inlet and outlet base of a multistage centrifugal pump and a manufacturing method of the water inlet and inlet and outlet base. The water inlet and inlet and outlet base is mainly structurally characterized in that a water inlet and a water outlet are formed in the side wall of an shell, an inner cylinder is welded into the cavity of the shell, a water inlet corresponding to the water inlet of the shell in position is formed in the side wall of the inner cylinder, an opening is formed at the upper end of each of the shell and the inner cylinder, a shaft hole is formed in the middle of the bottom of the inner cylinder, a water inlet pipe is welded and fixed on the water inlet holes of the shell and the inner cylinder, a water outlet pipe is welded and fixed on the water outlet of the shell, and a water passing gap is formed between the shell and the side wall of the inner cylinder. The water inlet and inlet and outlet base has the advantages that the water inlet and inlet and outlet base is environmental friendly and relatively extremely low in cost, precious resources are saved, and investment in manpower and financial resources is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a structure of a water inlet and outlet base of a multistage centrifugal pump and a manufacturing method thereof. Background technique [0002] The multi-stage centrifugal pump relies on the high-speed rotating impeller, so that the liquid obtains energy under the action of inertial centrifugal force to increase the pressure. Multi-stage centrifugal pumps are widely used in daily life and industry. Therefore, for the production and manufacture of the component parts of the multistage centrifugal pump, the water inlet and outlet base of the multistage centrifugal pump is produced and processed, and the mold is used for integrated casting processing, and the casting of the water inlet and outlet base cast by the mold is used. There may be air holes or shrinkage cavities, and it is easy to leak water. At the same time, the use of mold casting processing has certain polluti...

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Problems solved by technology

Therefore, for the production and manufacture of the component parts of the multistage centrifugal pump, the water inlet and outlet base of the multistage centrifugal pump is produced and processed, and the mold is used for integrated casting processing, and the casting of the water inlet and outlet base cast by the mold is used. There may be air holes or shrinkage cavities, and it is easy to leak water. At the same time, the use of mold casting processing has certain pollution and has a great impact on the environment. Moreover, using mold casting processing, from mold opening to mold casting, the cost investment in the whole process is extremely high. As a result, the price of the water inlet and outlet bases processed by mold casting is also extremely high. This casting method, in today's increasingly serious environmental pollution, seems to be a waste of precious resources, manpower and financial resources.

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