CN202914744U - Combination seal structure dust-prevention cushion - Google Patents
Combination seal structure dust-prevention cushion Download PDFInfo
- Publication number
- CN202914744U CN202914744U CN 201220638977 CN201220638977U CN202914744U CN 202914744 U CN202914744 U CN 202914744U CN 201220638977 CN201220638977 CN 201220638977 CN 201220638977 U CN201220638977 U CN 201220638977U CN 202914744 U CN202914744 U CN 202914744U
- Authority
- CN
- China
- Prior art keywords
- cushion
- lower seal
- dust
- sealing gasket
- seal cushion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a combination seal structure dust-prevention cushion which comprises an upper seal cushion, a lower seal cushion and a connection sleeve, wherein the upper seal cushion and the lower seal cushion are both of a round annular structure, the upper seal cushion, the lower seal cushion and the connection sleeve are provided with shaft holes having the same diameter, the outer edge of the lower surface of the upper seal cushion is provided with an annular butt joint protruded edge, and the outer edge of the upper surface of the lower seal cushion is provided with an annular butt joint protruded edge. The upper sea cushion is connected with the lower seal cushion through the butt joint protruded edges, the connection sleeve is placed between the upper seal cushion and the lower seal cushion, two ends of the connection sleeve are respectively connected with the upper seal cushion and the lower cushion in a sealed mode, and the surface of the upper seal cushion and the surface of the lower seal cushion are respectively provided with an annular dust-prevention ring. According to the combination seal structure dust-prevention cushion, the upper seal cushion and the lower seal cushion are connected with the connection sleeve to form a middle cavity which is separated from the outside, and an air seal purpose is achieved.
Description
Technical field
The utility model relates to a kind of combined sealing structure dust-proof cushion, is applied on the main shaft of tunnel excavator.
Background technique
The working environment of tunnel excavator is complicated, so often can enter dust or particle in the main shaft of tunnel excavator, causes easily spindle abrasion serious.Dust-proof cushion commonly used is a simple pad, adopts the flexible material manufacturing, because working environment is complicated, after using a period of time, flexible material can dust stratification, aging, distortion etc., causes and can't play dustproof effect.
The model utility content
In order to prevent that dust and particle from entering in the main shaft of tunnel excavator, the utility model provides a kind of combined sealing structure dust-proof cushion.
The purpose of this utility model is come specific implementation by the following technical programs:
The combined sealing structure dust-proof cushion, comprise sealing gasket, lower seal pad and connecting sleeve, described upper sealing gasket, the lower seal pad all is cirque structure, upper sealing gasket, lower seal pad and connecting sleeve have the axis hole of same diameter, the outward edge of the lower surface of described upper sealing gasket is provided with the docking fin of ring-type, and be provided with the docking fin of ring-type at the outward edge of the upper surface of lower seal pad, dock by the docking fin between upper sealing gasket and the lower seal pad, described connecting sleeve is between upper sealing gasket and lower seal pad, the two ends of connecting sleeve are tightly connected with upper sealing gasket and lower seal pad respectively, and the surface of upper sealing gasket and lower seal pad is respectively equipped with the dust ring of ring-type.
The cross section of described dust ring is rectangular configuration, and the distance between the twice dust ring is greater than the width of any dust ring wherein.
Combined sealing structure dust-proof cushion through above-mentioned design, by be tightly connected cavity in the middle of forming of upper sealing gasket, lower seal pad and connecting sleeve, separate cavity and outside, reach the effect of hermetic seal, and then guarantee that upper sealing gasket and lower seal spacer have enough toughness, reach the dustproof effect of bilateral, and dust-proof effect is better.
Description of drawings
The below is described in further detail the utility model with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing of the described combined sealing structure dust-proof cushion of the utility model embodiment.
Embodiment
As shown in Figure 1, the described combined sealing structure dust-proof cushion of the utility model embodiment, comprise sealing gasket 1, lower seal pad 3 and connecting sleeve 2, described upper sealing gasket 1, lower seal pad 3 all is cirque structure, upper sealing gasket 1, the axis hole that lower seal pad 3 and connecting sleeve 2 have same diameter, the outward edge of the lower surface of described upper sealing gasket 1 is provided with the docking fin of ring-type, and be provided with the docking fin of ring-type at the outward edge of the upper surface of lower seal pad 3, dock by the docking fin between upper sealing gasket 1 and the lower seal pad 3, described connecting sleeve 2 is between upper sealing gasket 1 and lower seal pad 3, the two ends of connecting sleeve 2 are tightly connected with upper sealing gasket 1 and lower seal pad 3 respectively, and the surface of upper sealing gasket 1 and lower seal pad 3 is respectively equipped with the dust ring 4 of ring-type.
The cross section of described dust ring 4 is rectangular configuration, and the distance between the twice dust ring 4 is greater than the width of any dust ring wherein.
Combined sealing structure dust-proof cushion through above-mentioned design, by be tightly connected cavity in the middle of forming of upper sealing gasket, lower seal pad and connecting sleeve, separate cavity and outside, reach the effect of hermetic seal, and then guarantee that upper sealing gasket and lower seal spacer have enough toughness, reach the dustproof effect of bilateral, and dust-proof effect is better.
Claims (2)
1. combined sealing structure dust-proof cushion, it is characterized in that, comprise sealing gasket, lower seal pad and connecting sleeve, described upper sealing gasket, the lower seal pad all is cirque structure, upper sealing gasket, lower seal pad and connecting sleeve have the axis hole of same diameter, the outward edge of the lower surface of described upper sealing gasket is provided with the docking fin of ring-type, and be provided with the docking fin of ring-type at the outward edge of the upper surface of lower seal pad, dock by the docking fin between upper sealing gasket and the lower seal pad, described connecting sleeve is between upper sealing gasket and lower seal pad, the two ends of connecting sleeve are tightly connected with upper sealing gasket and lower seal pad respectively, and the surface of upper sealing gasket and lower seal pad is respectively equipped with the dust ring of ring-type.
2. combined sealing structure dust-proof cushion as claimed in claim 1 is characterized in that, the cross section of described dust ring is rectangular configuration, and the distance between the twice dust ring is greater than the width of any dust ring wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638977 CN202914744U (en) | 2012-11-28 | 2012-11-28 | Combination seal structure dust-prevention cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638977 CN202914744U (en) | 2012-11-28 | 2012-11-28 | Combination seal structure dust-prevention cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914744U true CN202914744U (en) | 2013-05-01 |
Family
ID=48163061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638977 Expired - Fee Related CN202914744U (en) | 2012-11-28 | 2012-11-28 | Combination seal structure dust-prevention cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914744U (en) |
-
2012
- 2012-11-28 CN CN 201220638977 patent/CN202914744U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20131128 |