Pump and liquid supply device possessing the pump
A pump chamber and housing technology, applied in the field of liquid supply devices, can solve the problems of reduced self-priming function, gas-liquid separation, and inability to supply liquid effectively, and achieves the effect of improving discharge performance and good freedom of use
Inactive Publication Date: 2009-02-04
MATSUSHITA ELECTRIC WORKS LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] However, in the above-mentioned conventional pumps, the gas-liquid separation cannot be sufficiently performed due to the installation direction, and the self-priming function is reduced. As a result, the liquid cannot be reliably supplied.
Method used
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Embodiment Construction
[0027] Hereinafter, the present invention will be described through an example of an embodiment with reference to the accompanying drawings. figure 1 and figure 2 Among them, the composition of the pump includes: a casing, which is composed of a pump casing 16 with a concave portion formed on one side and a partition plate 17 fixed on the surface of the pump casing 16 having the above-mentioned concave portion; an impeller 11, which is arranged on the casing. Inside the pump chamber 23 in the body; and the motor stator 15, which is used to rotate the impeller 11 having the rotor magnet 13, and the impeller 11 rotatably supported by the bearing 14 receiving the shaft 18, on one end side of the outer peripheral portion in the axial direction It has blades 12 . In addition, the vane 12 and the rotor magnet 13 may be formed of different materials, and may be integrated by fitting them together, or may be made of a magnetic resin material, and the vane 12 and the rotor magnet 13 ...
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The invention provide a pump without restricting by the installing direction for maintaining self-priming function, always supplying with liquid step by step. The pump includes a rotary-driven impeller (12), a casing of the pump chamber (23) for forming an admition impeller (12), a sucking port (20) for sucking liquid and a discharge port (21) for discharging liquid. Said discharge port is connected with said pump chamber (23) via the discharge way (22) formed along the circumference of the pump chamber (23). Said discharge way of the liquid sucking from the sucking port to the pump chamber and discharging towards the discharge port, in the process has a jar (25) for inflowing liquid flowing along the discharge way, the jar is connected with said pump chamber via a reflow way (24). By keeping a part of liquid discharging via the discharge way in the jar, the liquid is supplied from the jar to the pump chamber, capable of exerting self-priming function.
Description
technical field [0001] The present invention relates to a pump for supplying liquid by rotating an impeller and a liquid supply device provided with the pump. Background technique [0002] There is a type of pump called a self-priming pump that includes a rotationally driven impeller, a casing in which a pump chamber for housing the impeller is formed, and a suction port through which liquid is sucked in and a discharge port through which liquid is discharged are connected to the casing. This pump has the function of being able to discharge the air entering the pump chamber together with the liquid. The liquid containing gas such as air introduced into the pump chamber from the suction port by the rotating impeller is sent to the discharge path, and the gas-liquid separation is carried out in the discharge path. The gas and part of the liquid separated above the liquid due to the difference in specific gravity are discharged from the discharge port (for example, refer to Pat...
Claims
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IPC IPC(8): F04D9/02
Inventor 福田哲也酒井敏辅
Owner MATSUSHITA ELECTRIC WORKS LTD