CN201610972U - Sealing device for valve rod of multi-way valve - Google Patents
Sealing device for valve rod of multi-way valve Download PDFInfo
- Publication number
- CN201610972U CN201610972U CN2009202806089U CN200920280608U CN201610972U CN 201610972 U CN201610972 U CN 201610972U CN 2009202806089 U CN2009202806089 U CN 2009202806089U CN 200920280608 U CN200920280608 U CN 200920280608U CN 201610972 U CN201610972 U CN 201610972U
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- valve
- valve rod
- valve body
- way valve
- sleeve
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- Expired - Fee Related
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Abstract
The utility model discloses a sealing device for the valve rod of a multi-way valve. The sealing device for the valve rod of the multi-way valve comprises a valve body and a valve rod mounted on the valve body, wherein the valve rod is hermetically connected with the valve body; a sleeve is sleeved on the outer side of the valve rod; the sleeve is hermetically connected with the valve body; the sleeve is connected with the valve body of the multi-way valve through bolts during tightening; a baffle ring is led to compress an O-shaped ring to cause deformation and form a certain strength through a compressing pressure plate, so as to seal up hydraulic oil inside the body of the sealing valve and prevent the leakage; an extension structure ensures that the valve rod is sealed therein, so as to prevent erosions from outside dust and particles; and after the sleeve is mounted, the small hole of a respirator is positioned at the lowest end; and when the valve rod moves inside the sleeve, inside air is discharged through the small hole, and external air is inhaled through the small hole. Therefore, the dust-proof effect of the front end of the multi-way valve is improved, the pollution-resistant capability of the multi-way valve is enhanced, and the reliability of the complete machine is improved.
Description
Technical field
The utility model relates to a kind of multi-way valve valve rod sealing device that is widely used in being mechanically operated by in the formula engineering machinery multi-way valve control system, belongs to the engineering machinery class.
Background technique
At present, the structure of the mechanical handling formula multi-way valve valve rod front end that loader disposed as shown in Figure 1, multi-way valve valve rod front end mainly is made up of valve body 1, valve rod 2, pressing plate 3, screw 4, valve rod 5, O shape circle 6, baffle ring 7, dust ring 8 etc., when active force puts on valve rod 2, valve rod 5, valve rod 2, valve rod 5 are done in valve body 1 and are seesawed, realize the switching between the multi-way valve oil circuit when valve rod 2, valve rod 5 motions, thus actions such as the lifting of realization loader, decline, tipping bucket, receipts bucket.Extremely extraneous from the valve body internal leakage for preventing hydraulic oil, baffle ring 7 is under the effect of fastening screw trip bolt screw-down torque, and extruding O shape encloses 6, and the amount of deformation of O shape circle 6 generations have been filled the radial clearance between valve rod and the valve body and formed certain intensity, thereby reach the effect of sealing.For preventing that extraneous dust from entering valve body 1 inside, assembled dust ring 8 at valve rod 2, valve rod 5 ends, this structure has following shortcoming: 1., the frequent operation of loader among the more abominable operating mode of environment, dust ring 8 can not effectively prevent the erosion of extraneous dust and pollutant.2., that extraneous dust and pollutant cause valve rod 2, valve rod 5 and 1 of valve body to scratch is serious, thereby destroyed the sealing effect of O shape circle 6, cause hydraulic oil to leak serious and the valve rod steering force bigger than normal.
The model utility content
Technical problem to be solved in the utility model provides a kind of multi-way valve valve rod sealing device, can overcome the dustproof problem of multi-way valve valve rod front end, strengthens the multi-way valve contamination resistance, and then improves whole aircraft reliability.
In order to address the above problem, the utility model by the following technical solutions:
A kind of multi-way valve valve rod sealing device comprises valve body, and valve rod and valve rod are installed on valve body, is tightly connected respectively between described valve rod and valve body, valve rod and the valve body, is respectively installed with sleeve pipe in the outside of valve rod and valve rod, and described sleeve pipe is connected with valve seal.
Below be the utility model for further improvement of these options:
One end of described sleeve pipe is provided with flange plate, is tightly connected between described flange plate and the valve body.
Be connected with screw by platen between described flange plate and the valve body, between flange plate and valve body, be provided with packing ring.
Be provided with the resuscitation apparatus aperture near on the sleeve pipe away from valve body one end.
The utility model adopts such scheme, and sleeve pipe is connected with the multi-way valve valve body by screw, make baffle ring compression O shape enclose distortion and form certain intensity by the compression platen when fastening, thereby hydraulic oil in the sealed valve body prevents to leak; Sleeve type structure in it, prevents the erosion of extraneous dust and particulate matter with valve stem seal; Sleeve pipe is installed back resuscitation apparatus aperture and is in bottom, inner air sucks by aperture by aperture eliminating, ambient air when valve rod moves in sleeve pipe, effectively improved the multi-way valve front end dustproof effect, improved the multi-way valve contamination resistance, improve whole aircraft reliability.
The utility model is described in further detail below in conjunction with drawings and Examples
Description of drawings
Accompanying drawing 1 is the structural representation of multi-way valve valve rod front end in the background technique;
Accompanying drawing 2 is the mounting structure schematic representation of multi-way valve front cover among the utility model embodiment;
Accompanying drawing 3 is the structural representation of multi-way valve front cover among the utility model embodiment.、
Among the figure: the 1-valve body; 2,5-valve rod; The 3-pressing plate; The 4-screw; 6-O shape circle; The 7-baffle ring; The 8-dust ring; The 9-packing ring; The 10-platen; The 11-sleeve pipe; 12-resuscitation apparatus aperture; The 13-screw; The 14-flange plate.
Embodiment
Embodiment, as shown in Figure 2, a kind of multi-way valve valve rod sealing device, comprise valve body 1, valve rod 2 and valve rod 5 are installed on valve body 1, described valve rod 2 and valve body 1, be tightly connected by O shape circle 6 respectively between valve rod 5 and the valve body 1, the outside at O shape circle 6 is provided with baffle ring 7, outside at valve rod 2 and valve rod 5 is respectively installed with sleeve pipe 11, and an end of described sleeve pipe 11 is provided with flange plate 14, is connected with screw 13 by platen 10 between described flange plate 14 and the valve body 1, between flange plate 14 and valve body 1, be provided with packing ring 9, make baffle ring 7 compression O shapes enclose 6 distortion and form certain intensity by compression platen 10 when fastening, thereby hydraulic oil in the sealed valve body prevent to leak; Sleeve pipe 11 seals valve rod 2 and valve rod 5 in it, prevents the erosion of extraneous dust and pollutant; As shown in Figure 3, end away from valve rod 2 and valve rod 5 on the described sleeve pipe 11 is provided with resuscitation apparatus aperture 12, sleeve pipe 11 is installed back resuscitation apparatus apertures 12 and is in bottom, when valve rod 2 and valve rod 5 moves sleeve pipe 11 in inner air by aperture 12 get rid of, ambient air passes through aperture 12 suctions.
Claims (4)
1. multi-way valve valve rod sealing device, comprise valve body (1), valve rod (2,5) is installed on valve body (1), be tightly connected between described valve rod (2,5) and the valve body (1), it is characterized in that: the outer cover at valve rod (2,5) is equipped with sleeve pipe (11), and described sleeve pipe (11) is tightly connected with valve body (1).
2. a kind of multi-way valve valve rod sealing device according to claim 1 is characterized in that: an end of described sleeve pipe (11) is provided with flange plate (14), is tightly connected between described flange plate (14) and the valve body (1).
3. a kind of multi-way valve valve rod sealing device according to claim 2 is characterized in that: be connected with screw (13) by platen (10) between described flange plate (14) and the valve body (1), be provided with packing ring (9) between flange plate (14) and valve body (1).
4. a kind of multi-way valve valve rod sealing device according to claim 2 is characterized in that: upward be provided with resuscitation apparatus aperture (12) away from valve body (1) one end near sleeve pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202806089U CN201610972U (en) | 2009-12-08 | 2009-12-08 | Sealing device for valve rod of multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202806089U CN201610972U (en) | 2009-12-08 | 2009-12-08 | Sealing device for valve rod of multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610972U true CN201610972U (en) | 2010-10-20 |
Family
ID=42961606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202806089U Expired - Fee Related CN201610972U (en) | 2009-12-08 | 2009-12-08 | Sealing device for valve rod of multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201610972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207235A (en) * | 2020-03-26 | 2020-05-29 | 徐工集团工程机械股份有限公司科技分公司 | Multi-way valve rod dustproof device |
-
2009
- 2009-12-08 CN CN2009202806089U patent/CN201610972U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207235A (en) * | 2020-03-26 | 2020-05-29 | 徐工集团工程机械股份有限公司科技分公司 | Multi-way valve rod dustproof device |
| CN111207235B (en) * | 2020-03-26 | 2023-09-26 | 徐工集团工程机械股份有限公司科技分公司 | Valve rod dust-proof device of multi-way valve |
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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: 20101020 Termination date: 20131208 |