Shaft sealing body, shaft sealing device and control method
A shaft seal and main seal technology, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of unsatisfactory sealing effect, large friction and wear, etc., to broaden the use range, improve service life, and reduce friction and wear. Effect
Active Publication Date: 2017-08-18
BEIJING UNIV OF CHEM TECH +1
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Problems solved by technology
[0003] In view of this, the present invention proposes a shaft sealing body, a shaft sealing device and a control method, aiming to solve the problems of large friction and wear and unsatisfactory sealing effect caused by the current stuffing seal
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[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0026] Embodiment of the sealing body:
[0027] see figure 1 and figure 2 , the figure shows the preferred structure of the shaft seal. As shown in the f...
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The invention provides a shaft sealing body, a shaft sealing device and a control method. The shaft sealing body comprises a main sealing body and a sealing ring fabricated by a flexible material. The main sealing body is provided with a through hole allowing a shaft to penetrate through in the axial direction, and a preset gap is reserved between the through hole and the shaft; the sealing ring is connected to the position between the shaft and the main sealing body in a sleeved manner and arranged in the preset gap; the outer wall of the sealing ring is provided with first annular slots in the circumferential direction, the main sealing body is provided with pressurizing holes, one end of each pressurizing hole communicates with the corresponding annular slot, the other end of each pressurizing hole penetrates through the side wall of the main sealing body and is used for being connected with a pressure adjustment pump. Sealing is achieved through the sealing ring; due to the fact that the sealing ring can be deformed, the sealing device is suitable for shafts of different diameters, wherein the shaft diameters are slightly changeable, and the application range of the sealing device is broadened; and due to the fact that the sealing ring is made of the flexible material, friction wear of the shafts is greatly reduced, and the service lives of the shafts and the service life of the sealing ring are prolonged.
Description
technical field [0001] The invention relates to the technical field of shaft sealing, in particular to a shaft sealing body, a shaft sealing device and a control method. Background technique [0002] At present, the sealing form of the shaft mainly adopts the packing seal, and the packing seal needs to be realized by pressing, and the large pressing force makes the friction and wear of the shaft during the movement serious, which seriously affects the service life of the seal and the shaft. Especially for flexible shafts, steel wire ropes are generally used for flexible shafts. Due to the irregular surface of the steel wire ropes, even if a large pressing force is used, uniform contact cannot be guaranteed, and the leakage of sealing fluid is extremely large. At the same time, the large pressing force also leads to increased frictional resistance and serious frictional heat generation, which not only affects the service life, but also increases energy consumption. Contents...
Claims
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CPCF16J15/46
Inventor 李双喜陈杰杜江王磊张馨予林盼栋
Owner BEIJING UNIV OF CHEM TECH