CN203686200U - Valve stem component and valve stem thereof - Google Patents
Valve stem component and valve stem thereof Download PDFInfo
- Publication number
- CN203686200U CN203686200U CN201320590062.3U CN201320590062U CN203686200U CN 203686200 U CN203686200 U CN 203686200U CN 201320590062 U CN201320590062 U CN 201320590062U CN 203686200 U CN203686200 U CN 203686200U
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- CN
- China
- Prior art keywords
- cylindrical shell
- valve rod
- plate
- baffle ring
- valve stem
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Abstract
The utility model relates to a valve stem component and a valve stem thereof. The valve stem component comprises the valve stem and a protecting sleeve sleeved on the valve stem, wherein the protecting sleeve is a telescopic sleeve which is formed by sequentially matching at least two sections of cylinder bodies in the vertical direction in an extending and retracting way; a pushing bearing part is arranged on the uppermost section of cylinder body; the valve stem comprises a rod body and a pushing disc; the axial line of the rod body extends along the vertical direction; the pushing disc is matched with the pushing bearing part in a jacking and pushing way and is fixed above the top end of the rod body through a fixed connection structure. The utility model provides the valve stem and the valve stem component with the valve stem, wherein the top end of the valve stem is not protruded on the uppermost section of cylinder body.
Description
Technical field
The utility model relates to a kind of valve rod assembly and valve rod thereof.
Background technique
Rising stem gate valve is the gate valve that current use amount is maximum, and it is widely used in connection and on-off valve regulation on waterworks water supply line, oil extraction in oil field, oil transportation production flow line, and general employing rotated handwheel, poppet stem and spool, thus open valve.In order to protect valve rod to avoid to clash into or to prevent foreign material, foul from entering in screw thread and affect the normal switch of valve, generally all can install protection cylinder outward additional at valve rod to be protected, valve rod and protect tin together with form the chief component of valve rod assembly.Existing valve rod assembly as disclosed in Chinese patent CN201964013U " retractable protection cylinder for valve rod of valve ", comprise valve rod and be sheathed on the protection cylinder of valve rod periphery, protection cylinder is the retracting cylinder being formed by least two joint cylindrical shells successively flexible cooperation, retracting cylinder can stretch along the vertical direction, in adjacent two cylindrical shells, the top cylindrical shell in position is upper cylinder, position cylindrical shell is on the lower lower cylinder body, in having turned in the upper end of lower cylinder body, turn edge, turn up to be useful on and coordinate with the interior block that turns edge and prevent outer the turning edge that upper cylinder is deviate from by lower cylinder body in the lower end of upper cylinder, wherein in each cylindrical shell, on the most top cylindrical shell in position, arrange and hold pushed section, holding pushed section is made up of the annular Stop structure extending towards inner barrel, valve rod comprises that top has the body of rod of double-screw bolt section, double-screw bolt section protrudes from the upper end of annular Stop structure, in double-screw bolt section, be set with pad and pad is fixed on to the nut on the body of rod, pad is equivalent to one and pushes away the push-plate that holds pushed section.In use, in the time that needs are opened valve, answer handwheel to make to move on valve rod band movable valve plug by rotating photo, valve rod moves past in journey upper, and pad holder on annular Stop structure and moved, thereby drives each cylindrical shell upwards to stretch out successively, until move on to limes superiors position on valve rod; In the time of needs throttle down, by rotation hand wheel, valve rod is moved down, each cylindrical shell relies on deadweight to retract in turn.The problem that existing this valve rod assembly exists is: pad is fixed on the body of rod by the nut rotating in double-screw bolt section, this that is to say that pad is positioned at the below on body of rod top, and the upper end guarantee pad that double-screw bolt section must protrude from annular Stop structure with hold pushed section bracketing and coordinate, so not only can affect attractive in appearancely, also limit near the working space that carries out maintenance work valve; Not sealing between each joint cylindrical shell, if there is water to infiltrate, can make valve rod get rusty and affect working life; In addition; may there is the situation of card cylinder in protection cylinder, taking three joint cylindrical shells as example, during as throttle down, the cylindrical shell at middle part fails to retract; and the cylindrical shell of the topmost part is retracted in the cylindrical shell of foot, will cause middle cylinder can not be retracted into the card cylinder phenomenon in foot cylindrical shell.
Summary of the invention
The purpose of this utility model is to provide a kind of top not protrude from the corresponding valve rod of going up joint cylindrical shell most; The purpose of this utility model is also to provide a kind of valve rod assembly that uses this valve rod.
In order to address the above problem, in the utility model, the technological scheme of valve rod is:
A valve rod for valve rod assembly, comprise the body of rod that axis extends along the vertical direction and upper end for the push-plate that pushed section pushing tow coordinates that holds of going up most on joint cylindrical shell, described push-plate is fixed on the top on described body of rod top by fixed connection structure.
Described fixed connection structure comprises the attachment post that upper end is fixedly connected with described push-plate, lower end is fixedly connected with described body of rod top, and the axis of attachment post extends setting along the vertical direction, and described push-plate and attachment post form "T"-shaped structure.
On the outer circumferential face of described push-plate, offer the annular mounting groove of installing for corresponding seal ring.
In the utility model, the technological scheme of valve rod assembly is:
A kind of valve rod assembly; comprise valve rod and be sheathed on the protection cylinder of valve rod periphery; protection cylinder is the retracting cylinder that is stretched and coordinate and form successively along the vertical direction by least two joint cylindrical shells; wherein go up most on joint cylindrical shell and be provided with and hold pushed section; valve rod comprises the body of rod that axis extends along the vertical direction and for holding with described the push-plate that pushed section pushing tow coordinates, described push-plate is fixed on the top on described body of rod top by fixed connection structure.
Described fixed connection structure comprises the attachment post that upper end is fixedly connected with described push-plate, lower end is fixedly connected with described body of rod top, and the axis of attachment post extends setting along the vertical direction, and described push-plate and attachment post form "T"-shaped structure.
On the outer circumferential face of described push-plate, offer the annular mounting groove of installing for corresponding seal ring.
Described upper end of going up joint cylindrical shell is most installed with baffle ring, and the described pushed section of holding is made up of the inner edge lower end of described baffle ring.
The described upper end cap of going up joint cylindrical shell is most equipped with the protective cap of being made up of transparent material, and the described pushed section of holding is made up of the lower end surface of described protective cap.
Described cylindrical shell has at least three joints, go up most the lower end of joint cylindrical shell, descend most the upper end of joint cylindrical shell and go up joint most, descend most the upper of each cylindrical shell between joint cylindrical shell, lower two ends are all installed with baffle ring, in each joint cylindrical shell, the inner edge lower end of the baffle ring of cylindrical shell upper end on the lower, position prevents that for spacing cooperation of outer rim upper end of the baffle ring of the cylindrical shell lower end top with position the top cylindrical shell in position from being deviate from by position cylindrical shell on the lower, the outer rim lower end of removing the baffle ring that descends joint cylindrical shell respectively to save top cylindrical shell lower end, position in cylindrical shell most for spacing cooperation of inner edge upper end of the baffle ring of cylindrical shell lower end on the lower, position.
On the outer circumferential face of the baffle ring of corresponding cylindrical shell lower end, all offer the seal ring mounting groove for seal ring is installed.
The beneficial effects of the utility model are: push-plate is fixed on the top on body of rod top by fixed connection structure, and owing to holding in use pushed section and be positioned at the top of push-plate, the top that is to say the body of rod can not protrude from holds pushed section and goes up joint cylindrical shell most, the body of rod not only can not affect attractive in appearancely like this, nor can take near the working space of maintenance work valve.
Further; the outer rim lower end of removing the baffle ring that descends joint cylindrical shell respectively to save top cylindrical shell lower end, position in cylindrical shell most for spacing cooperation of inner edge upper end of the baffle ring of cylindrical shell lower end on the lower, position; this just makes in the time that barrier gate protection cylinder is retracted; the outer end outer rim of the baffle ring of top cylindrical shell lower end, position can depressed position cylindrical shell lower end on the lower the inner outer rim of baffle ring; thereby each joint cylindrical shell is retracted successively, there will not be card cylinder phenomenon.
Brief description of the drawings
Fig. 1 is the embodiment's 1 of valve rod assembly in the utility model structural representation;
Fig. 2 is the structural representation of Fig. 1 in the time of barrier gate;
Fig. 3 is the embodiment's 2 of valve rod assembly in the utility model structural representation;
Fig. 4 is the embodiment's 3 of valve rod assembly in the utility model structural representation;
Fig. 5 is embodiment's 4 middle cylinder bodies of valve rod assembly in the utility model and the schematic diagram that coordinates of baffle ring.
Embodiment
The embodiment of valve rod assembly is as shown in Figure 1 and 2: comprise valve rod and be sheathed on the protection cylinder of valve rod periphery; protection cylinder is the retracting cylinder that is stretched and coordinate and form successively along the vertical direction by two joint cylindrical shells; two joint cylindrical shells are respectively upper cylinder 2 and lower cylinder body 3; the upper end cap of upper cylinder is equipped with the protective cap 1 of being made up of transparent material, and the lower end surface of protective cap has formed holds pushed section.The lower end of upper cylinder and the upper end of lower cylinder body are all installed with the baffle ring 4 of being made up of metallic material (or plastic materials), cylindrical shell is made up of stainless steel material (carbon fiber, glass fibre or plastics), on baffle ring, offer circular groove, the corresponding end plug-in mounting of cylindrical shell is also fixedly welded in the circular groove of baffle ring, the inner edge lower end 5 of the baffle ring of lower cylinder body upper end is deviate from by lower cylinder body for prevent upper cylinder with 6 spacing cooperations of outer rim upper end of the baffle ring of upper cylinder lower end, the outer rim lower end of push-plate for spacing cooperation of inner edge upper end 13 of the baffle ring of upper cylinder lower end.The lower end of lower cylinder body is also installed with metal ring 7, is provided with the screw thread for being connected with flashboard lift lug 10 on the inner peripheral surface of metal ring, and flashboard lift lug valve rod forms leading screw, screw mechanism.Valve rod comprises the push-plate 12 that the body of rod 8 that axis extends along the vertical direction and Yu Cheng pushed section, upper end pushing tow coordinate, push-plate is fixed on the top on body of rod top by fixed connection structure, fixed connection structure comprises 11 posts that are connected that upper end is connected with the welding of push-plate lower end, lower end is connected with body of rod welding, the axis of attachment post extends setting along the vertical direction, and push-plate and attachment post form "T"-shaped structure.
In the time that needs are opened valve, rotation hand wheel 9 makes to move on valve rod, and push-plate promotes to move on protective cap, and upper cylinder is by stretching out in lower cylinder body; In the time of needs throttle down, rotation hand wheel moves down valve rod, and push-plate is pressing the baffle ring of upper cylinder lower end to move down, and retracts smoothly thereby realize upper cylinder.In other embodiment of this valve rod assembly: during at barrier gate, push-plate also can not press down the baffle ring of upper cylinder lower end, now upper cylinder can rely on deadweight retract or by upper cylinder being retracted in lower cylinder body in the outside application of force, now the baffle ring on upper cylinder can not extend to the inner side of upper cylinder; Certainly the baffle ring on lower cylinder body also can not extend to the outside of lower cylinder body; Screw thread on metal ring and metal ring inner peripheral surface can also not established, can lower cylinder body be fixed in the frame at handwheel place by other fixed connection structure, such as bolt fastening structure, welded structure etc.; Protective cap is made up of transparent material, can conveniently observe the position of valve rod, determines the switching degree of valve, and protective cap also can be made up of opaque material certainly, now can protect the elongation of cylinder highly to carry out to determine the switching degree of valve by cylindrical shell; The upper and lower end of attachment post can also be threaded connection respectively with push-plate and be fixedly connected with the body of rod, and attachment post, push-plate and the body of rod can also be the overall structures of an integrally casting certainly; Certainly attachment post can also not established, and now fixed connection structure can be arranged at the welded structure between push-plate and the body of rod or push-plate is fixed on to bolt fastening structure or the integrally casting structure on the body of rod; In the time that baffle ring is made of plastics, baffle ring also can be adhered on corresponding cylindrical shell; Push-plate can be circular, square or other shape.
The embodiment 2 of valve rod assembly is as shown in Figure 3: embodiment 2 as different from Example 1, cylindrical shell has three joints, cylindrical shell between upper cylinder 2, lower cylinder body 3 is middle cylindrical shell 16, the upper/lower terminal of middle cylindrical shell is provided with baffle ring, the outer rim lower end 14 of the baffle ring of upper cylinder lower end for spacing cooperation of inner edge upper end 15 of the baffle ring of middle cylindrical shell lower end, in the time that upper cylinder is retracted, upper cylinder can press middle cylindrical shell to retract in turn like this, there will not be card cylinder phenomenon.In other embodiment of this valve rod assembly: cylindrical shell can also have four joints, five joints or more, and figure middle term 1 represents protective cap.
The embodiment 3 of valve rod assembly is as shown in Figure 4: embodiment 3 as different from Example 2, protective cap is replaced by a baffle ring, the superior displacement that now can observe valve rod from the endoporus of this baffle ring is put, to determine the unlatching of valve or to close degree, now holding pushed section is made up of the inner edge lower end of this baffle ring, and in order to prevent infiltration, on the outer circumferential face of push-plate 12, offer the annular mounting groove for seal ring is installed, on the baffle ring 4-2 outer circumferential face of on the baffle ring 4-1 outer circumferential face of upper cylinder lower end and middle cylindrical shell lower end, also offer the seal ring mounting groove of installing for seal ring, seal ring can play seal action can play again centralizing function.
The embodiment 4 of valve rod assembly is as shown in Figure 5: embodiment 4 is different from above embodiment: baffle ring 4 is fixed on corresponding cylindrical shell 17 by screw 18, is provided with radial groove 19 on baffle ring, and screw is radially fixed on baffle ring on corresponding cylindrical shell.In other embodiment of this valve rod assembly: screw also can be fixed on baffle ring on corresponding cylindrical shell vertically.
The embodiment of valve rod is as shown in Fig. 1 ~ 4: the concrete structure of valve rod is identical with the valve rod described in above-mentioned each valve rod assembly embodiment, is not described in detail in this.
Claims (10)
1. a valve rod for valve rod assembly, comprise the body of rod that axis extends along the vertical direction and upper end for the push-plate that pushed section pushing tow coordinates that holds of going up most on joint cylindrical shell, it is characterized in that: described push-plate is fixed on the top on described body of rod top by fixed connection structure.
2. valve rod according to claim 1, it is characterized in that: described fixed connection structure comprises the attachment post that upper end is fixedly connected with described push-plate, lower end is fixedly connected with described body of rod top, the axis of attachment post extends setting along the vertical direction, and described push-plate and attachment post form "T"-shaped structure.
3. valve rod according to claim 1, is characterized in that: on the outer circumferential face of described push-plate, offer the annular mounting groove of installing for corresponding seal ring.
4. a valve rod assembly; comprise valve rod and be sheathed on the protection cylinder of valve rod periphery; protection cylinder is the retracting cylinder that is stretched and coordinate and form successively along the vertical direction by least two joint cylindrical shells; wherein go up most on joint cylindrical shell and be provided with and hold pushed section; valve rod comprises the body of rod that axis extends along the vertical direction and for holding with described the push-plate that pushed section pushing tow coordinates, it is characterized in that: described push-plate is fixed on the top on described body of rod top by fixed connection structure.
5. valve rod assembly according to claim 4, it is characterized in that: described fixed connection structure comprises the attachment post that upper end is fixedly connected with described push-plate, lower end is fixedly connected with described body of rod top, the axis of attachment post extends setting along the vertical direction, and described push-plate and attachment post form "T"-shaped structure.
6. valve rod assembly according to claim 4, is characterized in that: on the outer circumferential face of described push-plate, offer the annular mounting groove of installing for corresponding seal ring.
7. valve rod assembly according to claim 6, is characterized in that: described upper end of going up joint cylindrical shell is most installed with baffle ring, and the described pushed section of holding is made up of the inner edge lower end of described baffle ring.
8. valve rod assembly according to claim 4, is characterized in that: the described upper end cap of going up joint cylindrical shell is most equipped with the protective cap of being made up of transparent material, and the described pushed section of holding is made up of the lower end surface of described protective cap.
9. valve rod assembly according to claim 4, it is characterized in that: described cylindrical shell has at least three joints, go up most the lower end of joint cylindrical shell, descend most the upper end of joint cylindrical shell and go up joint most, descend most the upper of each cylindrical shell between joint cylindrical shell, lower two ends are all installed with baffle ring, in each joint cylindrical shell, the inner edge lower end of the baffle ring of cylindrical shell upper end on the lower, position prevents that for spacing cooperation of outer rim upper end of the baffle ring of the cylindrical shell lower end top with position the top cylindrical shell in position from being deviate from by position cylindrical shell on the lower, the outer rim lower end of removing the baffle ring that descends joint cylindrical shell respectively to save top cylindrical shell lower end, position in cylindrical shell most for spacing cooperation of inner edge upper end of the baffle ring of cylindrical shell lower end on the lower, position.
10. valve rod assembly according to claim 9, is characterized in that: on the outer circumferential face of the baffle ring of corresponding cylindrical shell lower end, all offer the seal ring mounting groove for seal ring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590062.3U CN203686200U (en) | 2013-09-24 | 2013-09-24 | Valve stem component and valve stem thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590062.3U CN203686200U (en) | 2013-09-24 | 2013-09-24 | Valve stem component and valve stem thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686200U true CN203686200U (en) | 2014-07-02 |
Family
ID=51008100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590062.3U Expired - Fee Related CN203686200U (en) | 2013-09-24 | 2013-09-24 | Valve stem component and valve stem thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736818A (en) * | 2016-04-27 | 2016-07-06 | 重庆科技学院 | Protective device for high-pressure pipeline valves |
-
2013
- 2013-09-24 CN CN201320590062.3U patent/CN203686200U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736818A (en) * | 2016-04-27 | 2016-07-06 | 重庆科技学院 | Protective device for high-pressure pipeline valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20140924 |
|
| EXPY | Termination of patent right or utility model |