CN111895167A - Compound movement mechanism of isolating valve - Google Patents
Compound movement mechanism of isolating valve Download PDFInfo
- Publication number
- CN111895167A CN111895167A CN202010789784.6A CN202010789784A CN111895167A CN 111895167 A CN111895167 A CN 111895167A CN 202010789784 A CN202010789784 A CN 202010789784A CN 111895167 A CN111895167 A CN 111895167A
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- China
- Prior art keywords
- valve plate
- valve
- limiting
- valve body
- tension spring
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2007—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2021—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member with a plurality of valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a composite motion mechanism of an isolation valve, which comprises two groups of motion mechanisms which are symmetrical up and down, wherein each group of motion mechanisms comprises a shaft, a rocker arm, a tension spring bracket component, a limiting mechanism, an opening assisting mechanism and a taper pin; the shaft is fixed on bearings at two sides of the valve body and is connected with the driving device; two extension spring bracket components are fixed at the both ends of axle through the taper pin respectively, and two rocking arms are connected with the both ends of valve plate through the round pin axle respectively, and every rocking arm all is connected with the axle through the taper pin, is equipped with the extension spring between every extension spring bracket component and the valve plate, and two stop gear all weld in the valve body inboard, are located the place ahead of valve plate, the both ends of valve body, and two help opening mechanism all weld in the side frame inboard of valve body, are located the both ends of valve body, stop gear's the outside. The valve plate has a compact structure, the tension spring is adjustable, the moment acting on the valve plate can be effectively controlled, the valve plate can obtain enough moment in the whole opening and closing process, a composite motion track is generated, and zero interference between the valve plate and the sealing ring is ensured.
Description
Technical Field
The invention relates to a compound movement mechanism of an isolation valve, which is suitable for a rectangular isolation valve and belongs to the technical field of valve transmission systems.
Background
The isolation valve is conventional equipment in a ventilation system of a nuclear island factory building, and is driven to be fully opened and fully closed by an electric or manual device to isolate the ventilation system. The current motion modes of the isolation valve mainly comprise: 1) the side frame is directly welded with a tension spring support which is hung on the blade through a tension spring, the tension spring assists in pulling the valve plate, the valve plate is separated from the sealing ring in the initial opening process, but the tension spring has large stroke and is easy to fatigue and can fall off in the anti-seismic process. 2) The valve plate adopts a three-section structure, a compression spring is arranged at the spiral arm between two sections to assist opening, the valve plate is moved in a translation and rotation mode in the initial opening process, and the valve plate is separated from the sealing ring.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a stable and simple compound movement mechanism of an isolation valve.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a compound motion mechanism of an isolation valve comprises two groups of motion mechanisms which are symmetrical up and down, and each group of motion mechanisms comprises: the device comprises a shaft 1, two rocker arms 2, two tension springs 3, two tension spring bracket assemblies 4, two limiting mechanisms 5, two opening assisting mechanisms 6 and a plurality of taper pins 7;
the shaft 1 is fixed on bearings at two sides of the valve body 8 and is connected with a driving device; two extension spring bracket components 4 are fixed at the both ends of axle 1 through taper pin 7 respectively, the lower extreme of two rocking arms 2 is connected with the both ends of valve plate 9 through the round pin axle respectively, the upper end of two rocking arms 2 is connected with axle 1 through taper pin 7 respectively, rocking arm 2 is located the outside of extension spring bracket component 4, all be equipped with extension spring 3 between every extension spring bracket component 4 and the valve plate 9, two stop gear 5 all weld in valve body 8 inboardly, be located the place ahead of valve plate 9, the both ends of valve body 8, two help opening mechanism 6 all weld in the side frame inboard of valve body 8, be located the both ends of valve body 8, stop gear 5's the outside.
On the basis of above-mentioned scheme, extension spring bracket assembly 4 includes: the tension spring lifting device comprises a tension spring support 4-1, an adjustable lifting piece 4-2, two adjusting bolts 4-3, two locknuts 4-4, a screw 4-5 and a pin shaft 4-6 with a hole;
one end of the tension spring support 4-1 is fixed on the shaft 1 through a taper pin 7, the adjustable hanging part 4-2 is installed at the other end of the tension spring support 4-1, the pin shaft 4-6 with the hole is installed on the adjustable hanging part 4-2, a flat plate is arranged on the front side of the adjustable hanging part 4-2, two adjusting bolts 4-3 are installed on the flat plate, and a locknut 4-4 is installed on each adjusting bolt 4-3;
one end of the tension spring 3 is hung on the valve plate 9, the other end of the tension spring 3 is hung at a hole on the pin shaft with a hole 4-6, the adjusting bolt 4-3 is screwed, and the adjustable hanging bracket 4-2 drives the pin shaft with a hole 4-6 to be far away from the valve plate 9 along with the extension of the adjusting bolt 4-3, so that the tension spring 3 is extended, the tension is increased, and otherwise, the tension is reduced.
On the basis of the above scheme, the limiting mechanism 5 includes: the limiting base plate 5-1, the limiting bracket 5-2, the limiting bolt 5-3 and the bolt fastener; the limiting bottom plate 5-1 is welded on the inner side of the valve body 8, a threaded bottom hole is machined in the limiting bottom plate, the limiting support 5-2 is installed on the limiting bottom plate 5-1 through a bolt, the limiting bolt 5-3 is installed on the limiting support 5-2 through a bolt fastener, the upper position and the lower position of the limiting bolt 5-3 are adjustable, and the limiting bottom plate is used for limiting the valve plate 9 when the valve plate 9 is opened to 90 degrees and guaranteeing the accuracy of opening.
On the basis of the above scheme, the opening assisting mechanism 6 comprises: the collision block 6-1, the bracket 6-2 and the bolt fastener; the collision block 6-1 is installed on the bracket 6-2 through a bolt fastener, the bracket 6-2 is welded on the inner side of the side frame of the valve body 8, a hole in the collision block 6-1 is a long hole, the bolt fastener is loosened to adjust the extending length of the collision block 6-1 relative to the bracket 6-2, so that the collision block 6-1 and the valve plate 9 can be contacted at a certain angle, and the auxiliary valve plate 9 is opened to 90 degrees.
The invention has the following beneficial effects: the structure is compact, the stroke of the tension spring is small, and the service life is long; the adjustable tension spring can effectively control the moment acting on the valve plate, so that the valve plate can obtain enough moment and generate a composite motion track in the whole opening and closing process, zero interference between the valve plate and the sealing ring is ensured, and the valve plate is integral and has good rigidity.
Drawings
Figure 1 is a front view of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a front view of the tension spring bracket assembly.
Fig. 4 is a side view of the tension spring bracket assembly.
Fig. 5 is a sectional view taken along line B-B in fig. 2.
Fig. 6 is a cross-sectional view taken along line C-C of fig. 2.
Fig. 7 is a cross-sectional view taken along line D-D of fig. 2.
Fig. 8-1-8-4 are schematic diagrams of the composite motion mechanism track.
In the figure: 1-axis; 2-a rocker arm; 3-a tension spring; 4-tension spring bracket component: 4-1-tension spring support; 4-2-an adjustable hanger; 4-3-adjusting the bolt; 4-4-locknut; 4-5-screws; 4-6-pin shaft with hole; 5-a limiting mechanism: 5-1-a limit bottom plate; 5-2-a limiting bracket; 5-3 of a limit bolt; 6-opening assisting mechanism: 6-1-bump block; 6-2-bracket; 7-taper pin; 8-a valve body; 9-a valve plate; 10-sealing ring.
Detailed Description
The present invention will be described more fully with reference to the accompanying figures 1-8.
As shown in fig. 1 to 7, in the present embodiment, the rocker arm 2 and the tension spring bracket assembly 4 are assembled on the shaft 1 through a taper pin 7; the rocker arm 2 is in matched transmission with the two ends of the valve plate 9 through a pin shaft; a tension spring 3 is assembled between the tension spring bracket assembly 4 and the valve plate 9; the tension spring support assembly 4 is composed of a tension spring support 4-1, an adjustable hanging part 4-2, two adjusting bolts 4-3, two locknuts 4-4, screws 4-5 and a pin shaft with holes 4-6, when the tension of the tension spring 3 on the valve plate 9 is insufficient, the adjusting bolts 4-3 are screwed in, at the moment, the deformation of the tension spring 3 is increased, the tension is increased, otherwise, the tension is reduced.
A limiting bottom plate 5-1 in the limiting mechanism 5 is welded on the inner side of the valve body 8, and a limiting bolt 5-3 is adjusted to be limited when the valve plate 9 is opened to 90 degrees, so that the opening degree is accurate.
A bracket 6-2 in the opening assisting mechanism 6 is welded on the inner side of a side frame of a valve body 8, and a collision block 6-1 is adjusted, so that the collision block 6-1 can effectively promote the valve plate 9 to be just fully opened when a shaft 1 rotates for 90 degrees.
The movement process of the present invention is shown in fig. 8-1-8-4: the driving device drives the shaft 1 to be opened anticlockwise from the fully closed position shown in figure 8-1, the shaft 1 drives the valve plate 9 to be opened anticlockwise through the rocker arm 2, the pin shaft parts of the rocker arm 2 are inserted into pin shaft holes at two ends of the valve plate 9 (shown in figure 7), the tension spring 3 between the tension spring bracket assembly 4 and the valve plate 9 always applies certain tension to the valve plate 9 in the initial opening process, the tension of the tension spring 3 acts on the valve plate 9 at the synchronous moment when the rocker arm 2 is opened anticlockwise to drive the valve plate 9 to be opened, the valve plate 9 rotates around a pin shaft of the rocker arm 2, namely, the upper end of the valve plate 9 gradually moves towards the direction close to the shaft along with the increase of the opening angle, the lower end is always contacted with the sealing ring 10, when the valve plate 9 is contacted with the rocker arm 2, the tension spring 3 reaches and keeps the state of the minimum pre-tightening tension, i.e., fig. 8-2, this process is sufficient to disengage the upper end of the valve plate 9 and the seal ring 10 from a sufficient running clearance; then the shaft 1 drives the rocker arm 2 and the tension spring bracket assembly 4 to continue to run anticlockwise, the rocker arm 2 drives the valve plate 9 to move anticlockwise until the valve plate 9 contacts the collision block 6-1, and the operation is shown in fig. 8-3; finally, the shaft 1 drives the rocker arm 2 and the tension spring bracket assembly 4 to continue to run anticlockwise, the rocker arm 2 still drives the valve plate 9 to move anticlockwise, but at the moment, the collision block 6-1 limits the valve plate 9, so that the valve plate 9 rotates anticlockwise around the pin shaft of the rocker arm 2, the tension spring 3 is pulled open again until the valve plate 9 is contacted with the limiting bolt 5-3, and the valve plate 9 is fully opened, namely as shown in fig. 8-4.
Those not described in detail in this specification are within the skill of the art.
Claims (4)
1. The utility model provides a compound motion of isolating valve which characterized in that includes two sets of up-and-down symmetry's motion, every group motion includes: the device comprises a shaft (1), two rocker arms (2), two tension springs (3), two tension spring bracket assemblies (4), two limiting mechanisms (5), two opening assisting mechanisms (6) and a plurality of taper pins (7);
the shaft (1) is fixed on bearings at two sides of the valve body (8) and is connected with a driving device; two extension spring bracket components (4) are fixed at the both ends of axle (1) through taper pin (7) respectively, the lower extreme of two rocking arms (2) is connected with the both ends of valve plate (9) through the round pin axle respectively, the upper end of two rocking arms (2) is connected with axle (1) through taper pin (7) respectively, rocking arm (2) are located the outside of extension spring bracket component (4), all be equipped with extension spring (3) between every extension spring bracket component (4) and valve plate (9), two stop gear (5) all weld in valve body (8) inboard, be located the place ahead of valve plate (9), the both ends of valve body (8), two help open mechanism (6) all weld in the side frame inboard of valve body (8), be located the both ends of valve body (8), the outside of stop gear (5).
2. The compound motion mechanism of an isolation valve as claimed in claim 1, wherein the extension spring bracket assembly (4) comprises: a tension spring bracket (4-1), an adjustable hanging part (4-2), two adjusting bolts (4-3), two locknuts (4-4), a screw (4-5) and a pin shaft (4-6) with a hole;
one end of the tension spring support (4-1) is fixed on the shaft (1) through a taper pin (7), the adjustable hanging piece (4-2) is installed at the other end of the tension spring support (4-1), the pin shaft (4-6) with holes is installed on the adjustable hanging piece (4-2), a flat plate is arranged on the front side of the adjustable hanging piece (4-2), two adjusting bolts (4-3) are installed on the flat plate, and a check nut (4-4) is installed on each adjusting bolt (4-3);
one end of the tension spring (3) is hung on the valve plate (9), the other end of the tension spring (3) is hung at a hole on the perforated pin shaft (4-6), the adjusting bolt (4-3) is screwed, and the adjustable hanging bracket (4-2) drives the perforated pin shaft (4-6) to be far away from the valve plate (9) along with the extension of the adjusting bolt (4-3), so that the tension spring (3) is extended, the tension force is increased, and otherwise, the tension force is reduced.
3. The compound movement mechanism of an isolation valve as claimed in claim 1, characterized in that the limiting mechanism (5) comprises: the limiting base plate (5-1), the limiting bracket (5-2), the limiting bolt (5-3) and the bolt fastener; the limiting bottom plate (5-1) is welded on the inner side of the valve body (8), a threaded bottom hole is machined in the limiting bottom plate, the limiting support (5-2) is installed on the limiting bottom plate (5-1) through a bolt, the limiting bolt (5-3) is installed on the limiting support (5-2) through a bolt fastener, the upper position and the lower position of the limiting bolt (5-3) are adjustable, and the limiting bottom plate is used for limiting the valve plate (9) to ensure that the opening degree is accurate when the valve plate (9) is opened to 90 degrees.
4. The compound motion mechanism of an isolation valve as claimed in claim 1, wherein the opening assist mechanism (6) comprises: the collision block (6-1), the bracket (6-2) and the bolt fastener; the collision block (6-1) is mounted on the bracket (6-2) through a bolt fastener, the bracket (6-2) is welded on the inner side of a side frame of the valve body (8), a hole in the collision block (6-1) is a long hole, the bolt fastener is loosened to adjust the extending length of the collision block (6-1) relative to the bracket (6-2), so that the collision block (6-1) can be contacted with the valve plate (9) at a certain angle, and the auxiliary valve plate (9) is opened to 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789784.6A CN111895167A (en) | 2020-08-07 | 2020-08-07 | Compound movement mechanism of isolating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789784.6A CN111895167A (en) | 2020-08-07 | 2020-08-07 | Compound movement mechanism of isolating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111895167A true CN111895167A (en) | 2020-11-06 |
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ID=73247258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010789784.6A Pending CN111895167A (en) | 2020-08-07 | 2020-08-07 | Compound movement mechanism of isolating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111895167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458774A (en) * | 2022-02-15 | 2022-05-10 | 石家庄阀门一厂股份有限公司 | Isolation air valve |
-
2020
- 2020-08-07 CN CN202010789784.6A patent/CN111895167A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458774A (en) * | 2022-02-15 | 2022-05-10 | 石家庄阀门一厂股份有限公司 | Isolation air valve |
| CN114458774B (en) * | 2022-02-15 | 2023-12-12 | 石家庄先楚核能装备股份有限公司 | Isolation air valve |
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Address after: No.69, Shitong Road, Luquan District, Shijiazhuang City, Hebei Province 050200 Applicant after: Shijiazhuang Xianchu Nuclear Equipment Co.,Ltd. Address before: 050222 No.69, Shitong Road, Luquan District, Shijiazhuang City, Hebei Province Applicant before: SHIJIAZHUANG NO.1 VALVE FACTORY CO.,LTD. |