Mechaniclly sealing device of immersible pump
A mechanical seal device and mechanical seal technology, applied to mechanical equipment, parts of pumping devices for elastic fluids, pumps, etc., can solve problems such as inconvenient operation, blind spots, mechanical seals or complex structures of submersible pumps, and achieve extended The effect of improving service life, improving reliability, and improving traceability
Inactive Publication Date: 2008-02-20
于业明
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Problems solved by technology
[0006] The mechanical seal or structure of the submersible pump of the known technology is complex; or the anti-pump performance and anti-wear performance of the mechanical seal cannot reach a better level; or it is impossible to visually check whether the inner and outer seals leak under static pressure, The blind area in the operation process; or it is not suitable to realize the dismantling and inspection of the sealing mechanism alone, which brings inconvenience to the operation
Method used
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[0026] Below in conjunction with preferred embodiments, the specific implementation, features and effects provided by the present invention are described in detail as follows; for the purpose of simplicity and clarity, the description of known technologies is appropriately omitted below to avoid unnecessary details Affect the description of this technical solution.
[0027] Please refer to Figure 1-3, a mechanical seal device for a submersible pump, including a seal body, the seal body 1 is fixed between the motor chamber (or bearing chamber) and the pump chamber by the pump shaft 2, and 4 is a bearing, wherein , the sealing body includes a shaft sleeve 14 fixed on the pump shaft 2 through a fastening screw 26, a sealing housing 11 is set on the shaft sleeve, and a sealing cover 12 is connected to the sealing housing by a fastener 13 After the body is matched and combined, the seal cover and the seal housing are assembled on the pump body 3 through the fastener 13a;
[0028] ...
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The present invention relates to a mechanical sealing device of submerged pump. It includes a sealing self-body, in which the described sealing self-body has a shaft sleeve fixedly mounted on the pump shaft, a sealing shell body cover-mounted on the described shaft sleeve and a sealing cover, said sealing cover and said sealing shell body are combined to form said sealing self-body. In the upper half-portion of the described sealing shell body a sealing shell upper cavity chamber is set and is used for containing first mechanical sealing group, said first mechanical sealing group is fixedly mounted in the sealing cavity filled up with lubricating oil so as to form first sealing structure; in the lower half portion of the described sealing shell body a sealing shell lower cavity chamber is set and is used for containing second mechanical sealing group, between the sealing shell lower cavity chamber portion and the shaft sleeve a preset gap is remained, said second mechanical sealing group is placed in the sealing shell lower cavity chamber interior so as to form second sealing structure. Besides, said mechanical sealing device also includes a supercharger, said supercharger is connected with a supercharger interface connected with the sealing shell lower cavity chamber.
Description
technical field [0001] The invention belongs to the field of mechanical seals of submersible electric pumps, in particular to a mechanical seal oil-filled cavity arranged between a motor cavity and a pump cavity. Background technique [0002] In the known technology, such as the Chinese patent application CN200410041188.0, the double-end mechanical seal for centrifugal pump is characterized in that the double-end seal is pressed by a drum-shaped rubber ring, and the two ends of the drum-shaped rubber ring are equipped with radial anti-rotation and axial rotation respectively. The moving connecting body is connected with the pump body, and the outer circumference of the drum-shaped rubber ring is sealed by a sealing box. There is a compression adjustment device on the outer side of the rear seal of the coolant cavity. [0003] Another example is the Chinese patent application CN00803748.5, which makes lubricating oil stay on the sliding surface of a compound shaft seal insta...
Claims
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IPC IPC(8): F04D29/10
Inventor 于业明
Owner 于业明