Combined-type shaft seal device for centrifugal pump
A combined and centrifugal pump technology, which is applied to parts, pumps, and pump components of pumping devices for elastic fluids. It can solve the problems of high installation and maintenance requirements, easy wear of packing, and high operating costs, and meet the installation and maintenance requirements. Low cost, good sealing effect and low operating cost
Inactive Publication Date: 2011-05-04
SHUANGLUN GRP CO LTD SHANDONG
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Problems solved by technology
[0003] The technical problem solved by the present invention is to solve the problem of poor sealing effect of the stuffing shaft seal device, low power of the pump, easy wear of the stuffing, and the need to stop the pump frequently to replace the stuffing, which has high operating costs and affects normal work; the mechanical sealing device is expensive and requires installation and maintenance. To solve the high problem, provide a centrifugal pump combined shaft seal device with good sealing effect, high pump power, no need to stop the pump frequently to replace packing, low operating cost, not affect normal work, low price, and low installation and maintenance requirements
Method used
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Embodiment Construction
[0008] In the centrifugal pump combined shaft seal device shown in the figure, a shaft seal box 3 is provided on the shaft sleeve 1, a shaft seal gland 11 is provided at the port of the shaft seal box 3, a packing 2 is provided inside the shaft seal box 3, and a packing 2 There is a pressure pad 4 on the outside, and a pressure piece 6 is provided on the shaft seal gland 11. The pressure piece 6 is inserted into the shaft seal box 3 and pressed on the pressure pad 4. There are several oil seal assemblies 10 between the pressure piece 6 and the shaft sleeve 1. An oil inlet ring 7 is arranged between the oil seal components, and a pressure oil injection cup 8 is provided on the shaft seal box 3. The pressure injection oil cup 8 communicates with each oil inlet ring, and the pressure injection oil cup 8 can inject lubricating oil into the oil seal assembly 10, reducing shaft and The friction of the oil seal frame ensures the sealing effect and increases the service life of the oil...
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The invention discloses a combined-type shaft seal device for a centrifugal pump, relating to shaft seal devices for centrifugal pumps. A shaft seal box is arranged on a shaft sleeve, a shaft seal gland is arranged on the end of the shaft seal box, a filler is arranged on the inner side of the shaft seal box, a pressure pad is arranged on the outer side of the filler, a pressure sheet is arranged on the shaft seal gland, the pressure sheet is inserted into the shaft seal box and then pressed on the pressure pad, a plurality of oil seal parts are arranged between the pressure sheet and the shaft sleeve, oil feed rings are arranged among the oil seal parts, a forced filling oil cup is arranged on the shaft seal box, and the forced filling oil cup is communicated with the oil feed rings. The combined-type shaft seal device has the advantages of good seal effect, high pump efficiency, low operation cost, low price, and low requirement for installation and maintenance, avoids frequent pump pausing when the filler is changed, and is suitable for pump shaft seal of centrifugal pumps; and normal work of the device is not influenced.
Description
technical field [0001] The invention relates to a shaft seal device of a centrifugal pump, in particular to a combined shaft seal device of a centrifugal pump. Background technique [0002] We know that the existing centrifugal pump stuffing shaft seal device is to set a shaft seal box on the shaft sleeve, a packing ring is arranged in the shaft seal box, packing is provided on both sides of the packing ring, and a packing pressure is provided at the port of the shaft seal box. Cover, this kind of shaft sealing device, because there is a packing ring in the shaft sealing box, fillers are provided on both sides of the packing ring, and a packing gland is provided at the port of the shaft sealing box. The pressure of the packing gland is small, and the sealing effect is poor. When the pressure is high, the friction between the packing and the shaft sleeve is large, the power of the pump is low, and the packing is easy to wear. It is necessary to stop the pump frequently to rep...
Claims
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IPC IPC(8): F04D29/10
Inventor 邢磊吴鑫山王国华刘佳李媛
Owner SHUANGLUN GRP CO LTD SHANDONG