Packing seal structure internally provided with reinforcing rings
A technology of packing seal and reinforcing ring, applied in the direction of engine seal, engine components, mechanical equipment, etc., can solve problems such as false seal and leakage
Active Publication Date: 2016-03-23
大庆金佰顺建筑材料制造有限公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
When the cross-sectional shape of the packing is rectangular, the deformation of the packing in the radial direction is basically similar to the overall structure, which can easily cause leakage due to poor sealing. Therefore, it is urgent to improve and perfect
Method used
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Embodiment 1
[0018] Refer to attached figure 1 , a stuffing seal structure with a built-in reinforcing ring, the shaft rod passes through the stuffing shell, and the annular gap between the stuffing shell and the shaft forms a stuffing box, and the stuffing box is filled with sealants to prevent fluid from leaking from the sealing liquid area to the atmospheric area Combined packing, and the upper opening of the stuffing box is provided with a gland that presses down the combined packing, and the combined packing includes a graphite layer 2 arranged in the middle of the stuffing box in the axial direction and a packing layer arranged on the upper and lower sides of the graphite layer 1;
[0019] The graphite layer 2 includes several layers of graphite rings 21 and rigid reinforcing rings 22 arranged between adjacent graphite rings 21. The graphite rings 21 and the reinforcing rings 22 are closely fitted, and the cross section of the reinforcing rings 22 is triangular in shape. The shape o...
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Abstract
The invention discloses a packing seal structure internally provided with reinforcing rings. A shaft rod penetrates through a packing shell. An annular gap between the packing shell and a shaft serves as a packing box. The packing box is filled with combined packing capable of preventing fluid from leaking from a sealing liquid area to an atmosphere area. A gland used for pressing the combined packing tightly downwards is arranged at an opening of the upper end of the packing box. The combined packing comprises a graphite layer arranged in the middle of the packing box in the axial direction and packing layers which are arranged on the upper surface and the lower surface of the graphite layer. The graphite layer comprises a plurality of layers of graphite rings and rigid reinforcing rings arranged between the adjacent graphite rings. The graphite rings are tightly attached to the reinforcing rings. The cross section of each reinforcing ring is a triangle. The shape of each reinforcing ring is matched with the shape of the corresponding graphite ring on the reinforcing ring and the shape of the corresponding graphite rings under the reinforcing ring.
Description
technical field [0001] The invention relates to a packing sealing structure with a built-in reinforcing ring. Background technique [0002] Compression packing seals are also called packing seals and gland packing seals. Its sealing structure is simple, the source of materials is wide, the installation and maintenance are convenient, and the price is low, so it is widely used in centrifugal pumps, vacuum pumps, mixers, reactors and ship propellers, etc. Motion shaft seal, and rotary seal of various valve stems, etc. [0003] Packing is a kind of compressible sealing material. The packing seal is to install the packing in the stuffing box, expand the packing in the radial direction through the gland during the compaction process, and then stick to the shaft surface to prevent the leakage of the medium to achieve the sealing effect. Therefore, the size and distribution of contact stress on the shaft surface are the key factors to determine the sealing performance of compress...
Claims
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Login to View More IPC IPC(8): F16J15/28F16J15/30
CPCF16J15/28F16J15/30
Inventor 沈明学孟祥铠彭旭东励行根
Owner 大庆金佰顺建筑材料制造有限公司