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Casing of pump unit and pump device having thereof

A technology of pump unit and pump device, which is applied in the direction of parts, pump elements, pumps, etc. of pumping devices used for elastic fluids, to achieve the effect of low noise and improved rigidity

Active Publication Date: 2008-07-30
KAWASAKI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such connecting screw rods 10 are exposed outside the casings 5 ​​and 6 of the pump, and the generated noise is directly radiated to the outside.

Method used

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  • Casing of pump unit and pump device having thereof
  • Casing of pump unit and pump device having thereof
  • Casing of pump unit and pump device having thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] figure 1 It is a perspective view of the pump housing 20 of one embodiment of the present invention. figure 2 is from with figure 1 Stereoscopic view of pump outer light 20 viewed from different directions. image 3 is from with figure 1 and figure 2 Perspective views of the pump housing 20 viewed from different directions. FIG. 4 is a perspective view showing a pump device 21 including a pump housing 20 . exist figure 1 In , the pump casing 20 is shown so that the left side, the front, and the back can be seen. exist figure 2 In , the pump casing 20 is shown so that the front, the left side, and the bottom can be seen. exist image 3 The pump housing is shown with the right side, back and bottom visible. The structure other than the pump housing 20 is simplified in FIG. 4 . The pump device 21 is a pump device installed in, for example, industrial equipment and construction machinery, and is a compound type pump device composed of two pump parts, such ...

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PUM

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Abstract

The pump casing 20 of a pump unit of the pump device constituted by fastening the pump unit to a valve unit by a fastening bolt has a sound barrier 40. Due to the sound barrier 40, the pump casing 20 can cover the fastening bolt inserted into a fastening member insertion hole 35 to insulate noise generated by the fastening bolt. The sound barrier 40 has a constitution not merely covering the fastening bolt but covering the fastening bolt to insulate noise generated by the fastening bolt. Thus, this can prevent noise caused by the fastening bolt from being emitted and transferred to outside.

Description

technical field [0001] The invention relates to a pump device, in particular to the housing of a pump unit thereof. Background technique [0002] Figure 16 It is a perspective view showing a conventional pump device 1 . The pump device 1 shown in Non-Patent Document 1 is a compound type pump device called a tandem pump in which two swash plate type piston pumps are arranged side by side in the axial direction. The pump device 1 has two pump units 2 , 3 and a valve unit 4 . Each pump unit 2, 3 has a pump housing 5, 6, respectively, and each pump housing 5, 6 has a cylinder block, a piston, a swash plate, and the like, respectively. The valve unit 4 has a valve housing 7 in which each cylinder block of each pump unit 2, 3 is housed, and two valve plates are slidably housed. [0003] The respective pump units 2 , 3 and the valve unit 4 are connected by a plurality of connecting screws 10 . Each connecting screw 10 may resonate with the n-order frequency component of the fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/12F04B27/08
CPCF04D29/406F04D29/605F04D29/669F05D2210/11F05D2260/962F16B5/02Y10S415/00Y10S417/00
Inventor 大西正贵吉村勇和田寿夫
Owner KAWASAKI HEAVY IND LTD