CN1035282C - Stem-jumping-out preventing structure in a valve device - Google Patents
Stem-jumping-out preventing structure in a valve device Download PDFInfo
- Publication number
- CN1035282C CN1035282C CN 93114331 CN93114331A CN1035282C CN 1035282 C CN1035282 C CN 1035282C CN 93114331 CN93114331 CN 93114331 CN 93114331 A CN93114331 A CN 93114331A CN 1035282 C CN1035282 C CN 1035282C
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- CN
- China
- Prior art keywords
- valve
- valve rod
- sleeve
- flange
- chest
- 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 - Lifetime
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Abstract
The present invention provides a structure for preventing a valve stem of a valve device from pulling out. When the valve device of a ball valve, etc. is assembled, the valve stem with a flange is inserted into a valve hole of a valve shell body from the upward side; a divided sleeve is transversely arranged on the valve stem in the valve shell body, and then, the valve stem is lifted so as to enable the sleeve to be engaged with a concave part of the inner wall of the valve shell body. The valve stem is supported on the valve shell body through the flange of the valve stem and the sleeve so as to prevent the valve stem from pulling out; the sleeve is almost covered by the circumambience surface of the concave part of the inner wall and thus, after the sleeve is assembled, the present invention prevents the sleeve from pulling out from the valve stem.
Description
The valve rod that the present invention relates to control valve units such as ball valve deviates to prevent structure.
Deviate to prevent to be formed with a flange on the valve rod in the structure at general valve rod, this valve rod inserts the valve rod hole from the inboard of valve chest, and this valve rod flange is meshed with the inboard of valve chest.The advantage of this structure is simply, is easy to sealing, and still along with the high-pressure trend of control valve unit, in order to obtain higher sealing, with regard to the long valve rod of necessary use, this has caused new problem.
That is to say, as shown in Figure 4, for a valve rod 101 than the height gauge modest ability of valve chest inside is inserted in the valve rod hole 103 from the inboard of valve chest 102, a valve rod patchhole 104 that matches with the size of valve rod hole 103 will be set in the bottom of valve chest.Here, valve rod 101 is at first inserted in the valve chest 102 via valve rod patchhole 104, then insert in the valve rod hole 103.With suitable blocking device 105 valve rod patchhole 104 is sealed then.Its structure of this structure becomes complicated, and includes the danger of the external leaks at valve rod patchhole 104 additional seal places.
Japanese Patent Publication 60-5833 communique discloses a kind of known valve rod that valve rod is inserted this form in the valve rod hole from the valve chest outside and has deviate to prevent structure.As shown in Figure 5, deviate to prevent in the structure that a plurality of along radial contraction and be inserted into circular-arc baffle ring 109 in the valve rod hole 107, its peripheral part swells and is entrenched in the groove 108 set on the inwall of valve rod hole 107 of valve chest 106 at this valve rod.Between the periphery wall of the inner circle wall of baffle ring 109 and valve rod 110, be provided with a sleeve 111,, then be engaged in another groove 113 of valve rod 110 or valve rod hole 107 in order to the snap ring 112 that sleeve 111 is held in place.Valve rod is deviate from pressure, i.e. pressure in the valve chest is by valve rod 110, be passed on the valve chest 106 with groove 108 on valve rod all-in-one-piece flange 114, baffle ring 109 and valve opening 107 inwalls.This structure advantageously, except that position between the valve rod hole 107 of valve 110 and valve chest, does not have other sealing position.
But, this known valve rod deviates to prevent structure, since need a plurality of baffle rings 109, a plurality of as sleeve 111 and snap ring 112 and so on less part and with the groove 108 and 113 of their tablings, make complex structureization, its manufacturing and assembling also require to increase a lot of time and labors, especially processing groove on the inwall of valve rod hole 107, is very difficult technically.
The width of baffle ring 109, be the difference between its external diameter and the internal diameter,, in fact have only very little fair limit from the restriction of the difference between the external diameter of textural internal diameter that must be subjected to valve rod hole 107 and valve rod 110.Therefore, act on the valve rod 110 deviate from pressure, be that pressure in the valve chest finally is to be born by the groove 108 that less baffle ring 109 and this baffle ring embed, thereby make baffle ring 109 and groove 108 must be subjected to stress, like this, the pressure of deviating from that may bear just is limited in less value.
In this case, have the valve chest 106 of the chimeric with it groove 108 of baffle ring 109 and this baffle ring 109, its material or intensity become determine to bear deviate from pressure the time the factor that must take in especially.
In view of above-mentioned shortcoming, the object of the present invention is to provide a kind of valve rod to deviate to prevent structure, its simple structure, be easy to manufacture and assemble, also can enlarge markedly the pressure of deviating from that it may bear simultaneously.
In order to achieve the above object, valve rod of the present invention deviates to prevent structure, and it comprises: one has the valve chest of valve rod hole; One inserts the valve rod in the valve rod hole from the top, it has flange; A plurality of sleeves of cutting apart, they are installed on this valve rod from transverse direction in valve chest, and are adjacent with flange; One has the inwall of the valve chest of recess, and this recess almost surrounds entirely cuts apart sleeve.
When assembling, the valve rod that at first will have flange inserts in the valve rod hole of valve chest from the top, and the sleeve that will cut apart in valve chest is installed on this valve rod from transverse direction; Then valve rod is promoted, make the recess of the sleeve contact valve chest inwall of cutting apart.Like this, valve rod is by the valve rod flange and cut apart sleeve and be supported on the valve chest, prevents that it from deviating from.At this moment, cut apart the almost full side face of sleeve and surrounded, cutting apart sleeve and can not throw off after the dress group from valve rod by the recess of valve casing inwall.
The present invention has following advantage:
(a). be by the valve rod flange, cut apart sleeve and valve chest inwall recess is passed on the valve chest because valve rod is deviate from pressure, required part number is very little, and do not need on valve rod or valve chest, groove to be set, therefore structure becomes simple, makes and assembles required labour and time and also can cut down significantly.
(b). cut apart sleeve and need not pass valve rod hole, can directly be installed on the valve rod, therefore need not consider the internal diameter of valve rod hole and the external diameter of valve rod in essence, and can make arbitrary dimension with cutting apart sleeve as required from the valve chest inboard.Suitably strengthen by the area of contact that will cut apart between sleeve and the valve chest inner recesses, can consider to cut apart the material of sleeve and valve chest especially, just the pressure of deviating from that allows can be set to required numerical value.
(c). and since cut apart sleeve almost whole peripheral surface by the recess of valve chest inwall institute around, cutting apart sleeve and can not separate after the assembling from valve rod.
With reference to the accompanying drawings embodiments of the invention are described, wherein:
Fig. 1 is the longitudinal sectional view that valve rod of the present invention deviates to prevent structure;
Fig. 2 is the perspective view of cutting apart sleeve that above-mentioned valve rod deviates to prevent structure;
Fig. 3 is the assembling instruction figure that above-mentioned valve rod deviates to prevent structure;
Fig. 4 is the longitudinal sectional view that existing valve rod deviates to prevent structure;
Fig. 5 is the longitudinal sectional view that another kind of existing valve rod deviates to prevent structure.
In Fig. 1, valve rod 3 has the valve body of making 1 and carries out rotating linking department 2, and the top of linking department 2 is provided with integrally formed flange 4.A plurality of (particularly two of the situation of the present embodiment shown in Fig. 2) are circular-arc cuts apart sleeve 5, is installed in the outer circumferential face of valve rod 3 from transverse direction, and this will describe in detail in the back.The bottom of cutting apart sleeve 5 is formed with flange 6, and this is cut apart in the corresponding stepped shaft recess 10 of the shape with cutting apart sleeve 5 and flange 6 that forms on valve rod hole 8 inwalls 9 that sleeve 5 is seated in valve chest 7.Like this, almost full week of the recess 10 of valve chest inwall 9 surrounds and cuts apart sleeve 5 and flange 6 thereof.
The flange 6 of cutting apart sleeve 5 is not necessary, can save.In this case, the upper-end surface of the recess 10 of the upper-end surface of cutting apart sleeve 5 and valve chest inwall 9 is joined, form recess 10 like this.
In addition, cut apart between the flange 4 of the lower end surface of sleeve 5 and valve rod 3, and cut apart between the outer circumferential face of the inner peripheral surface of sleeve 5 and valve rod 3, clamped thrust bearing 11 and radial bearing 12 respectively, make that the rotary manipulation of valve rod 3 can carry out more sleekly in use.In the situation of present embodiment, each bearing 11 and 12 is to be made of the low plastic ring that rubs.In addition, for preventing the position deflection of radial bearing 12, also can on the outer circumferential face of valve rod 3, be arranged with groove 13.
In said structure, pressure in the valve chest 7, be the pressure of deviating from of valve rod 3, be by valve rod 3 flange 4, thrust bearing 11, cut apart sleeve 5, cut apart the recess of the flange 6 of sleeve 5 and valve chest inwall 9, promptly be delivered on the inwall 9 of valve chest by the mutual bigger area of contact of above-mentioned each member.The flange 6 of cutting apart sleeve 5 and cutting apart sleeve 5 is surrounded by the almost full side face of recess 10, in use is offset or comes off thereby prevented to cut apart sleeve 5.
Fig. 3 briefly shows the assembling process that valve rod deviates to prevent structure.When assembling, the valve rod 3 that thrust bearing 11 and radial bearing 12 are housed is in advance inserted in the valve rod hole 8 from the outside of valve chest 7.Here, the external diameter of the flange 4 of valve rod 3 is littler than the internal diameter of valve rod hole 8, and when valve rod 3 inserted, its flange 4 did not constitute obstacle.
Then, will cut apart sleeve 5 and be installed in being on the position in the valve chest 7 of valve rod 3 from transverse direction.At last, valve rod 3 is promoted, cut apart in the recess 10 that sleeve 5 and flange 6 thereof be embedded into valve chest inwall 9, finished the assembling process that valve rod deviates to prevent structure.
Recited above only is embodiments of the invention, and those of ordinary skill can be made various variations and remodeling in the scope that does not break away from claims.
Claims (7)
1. valve rod deviates to prevent structure, and it comprises:
One has the valve chest of valve rod hole;
One inserts the valve rod in the valve rod hole from the top, it has flange;
It is characterized in that this structure also comprises:
A plurality of sleeves of cutting apart, they are installed on this valve rod from transverse direction in valve chest, and are adjacent with flange;
One has the inwall of the valve chest of recess, and this recess almost surrounds entirely cuts apart sleeve.
2. structure according to claim 1 is characterized in that being provided with thrust bearing between sleeve end face and valve rod flange.
3. structure according to claim 1 is characterized in that being provided with radial bearing between the inner peripheral surface of sleeve and valve rod outer circumferential face.
4. structure according to claim 2 is characterized in that being provided with radial bearing between the inner peripheral surface of sleeve and valve rod outer circumferential face.
5. according to each described structure in the claim 1 to 4, it is characterized in that the shape of the recess of valve chest inwall is consistent with sleeve.
6. according to each described structure in the claim 1 to 4, it is characterized in that lower cartridge is formed with flange, this flange is meshed with the recess of valve chest inwall.
7. structure according to claim 5 is characterized in that lower cartridge is formed with flange, and this flange is meshed with the recess of valve chest inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114331 CN1035282C (en) | 1993-11-04 | 1993-11-04 | Stem-jumping-out preventing structure in a valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93114331 CN1035282C (en) | 1993-11-04 | 1993-11-04 | Stem-jumping-out preventing structure in a valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1102464A CN1102464A (en) | 1995-05-10 |
| CN1035282C true CN1035282C (en) | 1997-06-25 |
Family
ID=4990483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93114331 Expired - Lifetime CN1035282C (en) | 1993-11-04 | 1993-11-04 | Stem-jumping-out preventing structure in a valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035282C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519561B (en) * | 2017-09-20 | 2022-04-15 | 株式会社三国 | Rotary valve device |
| JP6940347B2 (en) * | 2017-09-20 | 2021-09-29 | 株式会社ミクニ | Rotary valve device |
-
1993
- 1993-11-04 CN CN 93114331 patent/CN1035282C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1102464A (en) | 1995-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131104 Granted publication date: 19970625 |