Mechanical seal used for pump
A technology for mechanical seals and pumps, which is applied to engine seals, mechanical equipment, engine components, etc. It can solve the problems of shortening the service life of springs, affecting the sealing effect of mechanical seals, aging and corrosion of springs, and prolonging the service life. The effect of novel structure and reliable operation
Inactive Publication Date: 2016-07-06
SHANDONG SHUANGLUN
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Problems solved by technology
[0002] At present, the existing mechanical seals for pumps are usually composed of a moving ring part and a static ring part. The moving ring part and the static ring part are sleeved on the pump shaft. The moving ring part is connected with a spring seat through a spring to compensate the pump shaft. During the rotation, the friction gap between the moving ring and the static ring friction surface, such as the Chinese patent CN103244677, has the disadvantage that: since the compensation element spring rotates with the pump shaft and is completely in contact with the conveying medium, it is easily affected by the operation of the pump and the pump conveying medium. The spring is easy to age and corrode, which shortens the service life of the spring and affects the sealing effect of the mechanical seal
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[0010] The present invention is further described below in conjunction with specific embodiment:
[0011] as attached figure 1 As shown, a pump mechanical seal includes a moving ring part, a static ring part and a compensation spring 7, the moving ring part includes a mechanical seal moving ring seat 1 and a mechanical seal moving ring 2, and the static ring part includes a mechanical seal The static ring seat 3 and the mechanical seal static ring 4, one end of the mechanical seal dynamic ring 2 is fixedly connected with the mechanical seal dynamic ring seat 1, and the other end is in contact with the mechanical seal static ring 4, which is characterized in that a sealing sleeve 5 and a spring The thrust ring 6, the sealing sleeve 5 is composed of an inner ring, an outer ring and a bottom ring, the outer ring is set outside the inner ring, the outer ring at one end of the bottom ring is fixedly connected with the outer ring, and the inner ring and the inner ring are fixed con...
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The invention discloses mechanical seal used for a pump. The mechanical seal comprises a moving ring portion, a static ring portion, and a compensating spring. The mechanical seal is characterized by providing with a sealing cartridge and a spring thrust ring. The sealing cartridge is formed by an inner ring, an outer ring, and a bottom ring. The outer ring is sleeved out of the inner ring. The outer circle of one end of the bottom ring is fixedly connected with the outer ring, and the inner circle is fixedly connected with the inner ring. The periphery of the end face of the bottom ring which is between the outer ring and the inner ring is uniformly provided with spring positioning holes. The spring thrust ring is arranged between the outer ring and the inner ring. One end of the compensating spring is abutted against the spring positioning hole, and the other end is abutted against the spring thrust ring. The other end of the spring thrust ring is abutted against a mechanical seal static ring base which is inserted between the outer ring and the inner ring of the sealing cartridge in a sealed manner. The other end of the mechanical seal static ring base is connected with the mechanical seal static ring. The mechanical seal used for a pump is novel in structure, high in sealing performance, reliable and stable in operation, and service life is prolonged.
Description
technical field [0001] The invention relates to the technical field of mechanical engineering pumps, in particular to a mechanical seal for pumps. Background technique [0002] At present, the existing mechanical seals for pumps are usually composed of a moving ring part and a static ring part. The moving ring part and the static ring part are sleeved on the pump shaft. The moving ring part is connected with a spring seat through a spring to compensate the pump shaft. During the rotation, the friction gap between the moving ring and the static ring friction surface, such as the Chinese patent CN103244677, has the disadvantage that: since the compensation element spring rotates with the pump shaft and is completely in contact with the conveying medium, it is easily affected by the operation of the pump and the pump conveying medium. The spring is easy to age and corrode, which shortens the service life of the spring and affects the sealing effect of the mechanical seal. Con...
Claims
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IPC IPC(8): F16J15/18
Inventor 孟凡玉吴鑫山刘斌斌张振中
Owner SHANDONG SHUANGLUN