Centrifugal pump
AssigneeKabushiki Kaisha Saginomiya Seisakusho
InventorSeiichi Nakano
Life of this patent
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Abstract
A centrifugal pump includes a main body casing. The main body casing includes an upper main body casing, a lower main body casing fixed to the upper main body casing, and a blade casing. In the blade casing, an interior space S1 formed by the upper main body casing and the lower main body casing is partitioned, and a fluid introducing passage is formed on the upper portion and a rotating accommodating space S2 to accommodate the rotating blade member is formed on lower portion. A joint portion of the upper main body casing, the lower main body casing, and the blade casing is fixed on the state of sealing. A joint portion of the suction side coupling member and the main body casing and a joint portion of the discharge side coupling member and the main body casing 34 are fixed on the state of sealing.
Claims13
A centrifugal pump comprising,
- a rotating blade member including an impeller and a rotor magnet disposed under the impeller,
- a metallic main body casing in which the rotating blade member is accommodated,
- a metallic suction side coupling member which is connected to the metallic main body casing to introduce a fluid to the impeller,
- a metallic discharge side coupling member which is connected to the metallic main body casing to exhaust the fluid by rotation of the impeller,
- a coil portion which is located in a periphery of the rotor magnet and rotates the rotating blade member,
- a main body side fixing bracket associated with the metallic main body casing;
- a coil side fixing bracket associated with the coil portion, and
- wherein the metallic main body casing and the coil portion are fixed and detached by rotating at least one of the main body side fixing bracket or the coil side fixing bracket,
- wherein the metallic main body casing includes:
- an upper main body casing,
- a lower main body casing fixed to the upper main body casing, wherein the lower main body casing includes a cylindrical part having a bottom surface that closes an end of the cylindrical part, and
- a blade casing, which partitions an interior space, which is formed by the upper main body casing and the lower main body casing, into an upper interior space and a lower interior space, wherein the upper interior space is surrounded by the upper main body casing and the blade casing,
- wherein a fluid introducing passage is formed in the upper interior space, and a rotating accommodating space to accommodate the rotating blade member is formed in the lower interior space,
- wherein the fluid introducing passage is connected to the metallic suction side coupling member, and the rotating accommodating space is connected to the metallic discharge side coupling member,
- wherein the metallic suction side coupling member is fixed to an opening portion of a side peripheral wall of the upper main body casing,
- wherein the metallic discharge side coupling member is fixed to another opening portion of the side peripheral wall of the upper main body casing and a side peripheral wall of the blade casing,
- wherein a joint portion of the upper main body casing, the lower main body casing, and the blade casing are fixed and sealed by a first heating process, and
- wherein a joint portion of the metallic suction side coupling member and the metallic main body casing and a joint portion of the metallic discharge side coupling member and the metallic main body casing are fixed and sealed by a second heating process.
Dependencies are inferred from the claim text.