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Sealing device

A technology of sealing device and rotating shaft, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of wear resistance and other problems, and achieve the effect of ensuring sealing and improving durability.

Inactive Publication Date: 2019-09-06
SANWA KOKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Conventional mechanical seals have had problems with wear resistance due to friction between the rotating ring and the stationary ring that rotate together with the rotating shaft
In addition, in the sealing device to which the conventional packing seal is applied, the space between the packing seal and the shaft is pressurized, and there is a problem in wear resistance.
[0013] That is, in the conventional sealing device, since there is a sliding part, there is a problem of sealing performance accompanied by wear resistance, and further improvement in durability is required.

Method used

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  • Sealing device
  • Sealing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0068] [Implementation mode 1: figure 1 ]

[0069] refer to figure 1 The sealing device 1a according to Embodiment 1 of the present invention will be described.

[0070] figure 1 It is a sectional view showing the basic structure of the sealing mechanism of the sealing device 1 a according to Embodiment 1 of the present invention.

[0071] The sealing device 1 a seals between the rotating shaft 20 inserted into the container 10 and the container 10 . The sealing device 1a includes: a casing 40 positioned around the rotating shaft 20 and fixed to the container 10; a filler PK filled between the casing 40 and the rotating shaft 20; The holding mechanism part 50 for holding the filler PK between them. Note that the rotating shaft 20 is inserted into the container 10 through the shaft hole 10h.

[0072] It should be noted that the filler PK is described separately in the third embodiment.

[0073] In the sealing device 1a, since the holding mechanism part 50 fills and holds...

Embodiment approach 2

[0101] [Implementation mode 2: figure 2 ]

[0102] refer to figure 2 The sealing device 1b according to Embodiment 2 of the present invention will be described.

[0103] figure 2 It is a sectional view showing the basic structure of the sealing mechanism of the sealing device 1b according to Embodiment 2 of the present invention.

[0104] In the sealing device 1b, the same parts as those of the sealing device 1a according to Embodiment 1 are denoted by the same reference numerals, and description thereof will be appropriately omitted.

[0105] The sealing device 1 b seals between the rotating shaft 20 inserted into the container 10 and the container 10 . The sealing device 1b includes: a casing 40 located around the rotating shaft 20 and fixed to the container 10; a filler PK filled between the casing 40 and the rotating shaft 20; The holding mechanism part 50 for holding the filler PK between them. Note that the rotating shaft 20 is inserted into the container 10 thr...

Embodiment approach 3

[0132] The filler PK and the regulating portion gp in the first and second embodiments will be described in detail as a third embodiment.

[0133] The filler PK in Embodiments 1 and 2 is necessary to ensure the filling property and the sealing performance after filling when the holding mechanism part 50 located between the rotating shaft 20 and the housing 40 is filled with the filler PK from the outside.

[0134] That is, in order to fill the holding mechanism part 50 with the filler PK, it is necessary to fill the holding mechanism part 50 with fluidity and lubricity, and it is also necessary not to separate from the side of the rotating shaft 20 and the casing in the axial direction DL of the holding mechanism part 50. 40 (container 10) side between the restriction part gp outflow sealing. The tightness of the filling PK is mainly determined by the viscosity. Therefore, the viscosity required for the filler PK is a physical property value that seals between the rotating sh...

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PUM

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Abstract

The invention provides a sealing device. Sealing performance can be ensured and durability is improved. The sealing device (1a) performs sealing between a rotating shaft (20) inserted into a container(10) and the container (10). The sealing device (1a) includes a housing (40) positioned around the rotating shaft (20) and fixed to the container (10), a filler (PK) filled between the housing (40) and the rotating shaft (20), and a holding mechanism part (50) securing the filler (PK) positioned between the housing (40) and the rotating shaft (20). The holding mechanism part (50) includes a storing chamber (51a) in which the filler (PK) is stored in a housing (40) side with respect to the rotating shaft (20), and a driving part (61a) which projects to the storing chamber (51a) fixed to the rotating shaft (20) and is driven to flow the filler (PK).

Description

technical field [0001] The present invention relates to a sealing device that can easily improve the airtightness and durability between a rotating shaft inserted into a container and the container. Background technique [0002] As a conventional sealing device, a structure applying a mechanical seal (for example, refer to Patent Document 1), a structure applying a packing seal (for example, refer to Patent Document 2), and the like have been proposed. [0003] The technique described in Patent Document 1 that applies a mechanical seal is a rotary-side seal surface of a rotary seal ring mounted on the rotary side (shaft side) and a static seal surface mounted on the stationary side (box (container) side). The stationary-side sealing surface of the ring is in sliding contact (see paragraph 0020 of Patent Document 1). [0004] The rotary seal surface of the rotary seal ring is in sliding contact with the stationary seal surface of the stationary seal ring with a predetermined...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/16
CPCF16J15/16F16J15/164F16J15/40F16J15/022F16J15/102F16J15/14
Inventor 大谷桂一
Owner SANWA KOKI KK