CN204345053U - A kind of switch display device for flap type - Google Patents
A kind of switch display device for flap type Download PDFInfo
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- CN204345053U CN204345053U CN201420808293.1U CN201420808293U CN204345053U CN 204345053 U CN204345053 U CN 204345053U CN 201420808293 U CN201420808293 U CN 201420808293U CN 204345053 U CN204345053 U CN 204345053U
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- valve stem
- valve
- stem casing
- display device
- flap type
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Abstract
For a switch display device for flap type, flap type comprises: valve rod; Be set in the pressure cap outside valve rod; Valve stem casing, bottom to be arranged between valve rod and pressure cap and to be fixed on valve stem top by safety pin, and middle part and top are stretched out by pressure cap top; Handwheel, is fixed on valve stem casing top; Switch display device comprises: two screw rods, be arranged in parallel with valve stem casing, and the bottom of every root screw rod is fixedly installed on pressure cap top, and is provided with gap between two screw rods; Outside thread, is arranged on the middle part outer wall of valve stem casing; Indicating ring, has a through hole, to be set on valve stem casing and to be embedded in externally threaded thread groove; One end of this indicating ring is passed from the gap between two screw rods; During opening and closing valve, drive valve stem casing and valve rod together to rotate by rotating handwheel, indicating ring is subject to the restriction of screw rod, moves up and down along externally threaded thread groove, display valve open-close state.The utility model distinguishes valve switch state by exposing indicating ring, and structure is simple, easy to operate, reliably easy.
Description
Technical field
The utility model relates to a kind of switch display device being applicable to flap type, specifically refers to a kind of switch display device for dark rod flat plate valve, belongs to valve opening/closing device field.
Background technique
Flap type is the key equipment in wellhead assembly and christmas tree equipment, and according to the forms of motion of valve rod, flap type can be divided into dark rod flat plate valve and rising stem flat valve.Wherein, the valve rod of dark rod flat plate valve opens and closes valve by rotary motion, is to see the switching position of valve from appearance, and must be distinguished the on off state of valve by operation handwheel.The valve rod of rising stem flat valve then opens and closes valve by moving up and down, therefore can moving up and down from external inspection to valve rod, thus directly distinguishes the on off state of valve.
But in actual use, the valve rod of rising stem flat valve at the volume carrying out changing in the process moved up and down in flap type cavity, and is unfavorable for the switch of valve.In ultrahigh pressure field, still still the utilization of dark rod flat plate valve is comparatively extensive, be more convenient for maintenance and maintenance, and working life is also longer, is therefore subject to the favor of user.But unique shortcoming of dark rod flat plate valve is exactly above-mentioned mentioning, and cannot distinguish the on off state of valve, therefore easily cause misoperation, and bring inconvenience to execute-in-place from appearance.
In current prior art, existing more switch indicator can be used on this dark rod flat plate valve, but because indicator self structure is complicated, profile is heavy, cause the transformation process on original valve mechanism also comparatively complicated, and final display effect is unsatisfactory, also there is the problems such as manufacture cost is higher, the use of indicator is restricted simultaneously.
Model utility content
The purpose of this utility model is to provide a kind of switch display device for flap type, and by exposing, indicating ring is clear distinguishes valve switch state, and structure is simple, easy to operate, reliably easy.
In order to achieve the above object, the utility model is achieved through the following technical solutions: a kind of switch display device for flap type, and described flap type comprises: valve rod; Pressure cap, it is set in outside described valve rod; Valve stem casing, to be arranged on bottom it between described valve rod and pressure cap and to be fixedly installed on the top of valve rod by safety pin, stretching out in the middle part of it with the top of top by pressure cap; Handwheel, it is fixedly installed on the top of described valve stem casing, rotates this handwheel and valve stem casing and valve rod can be driven together to rotate; Wherein, described switch display device comprises: two screw rods, all be arranged in parallel with described valve stem casing, and the bottom of every root screw rod is fixedly installed on the top of described pressure cap, and is provided with gap between two screw rods; Outside thread, it is arranged on the outer wall at the middle part of described valve stem casing; Indicating ring, it has a through hole, and this through hole to be set on described valve stem casing and to be embedded in externally threaded thread groove; And one end of this indicating ring is passed from the gap between described two screw rods; During opening and closing valve, drive valve stem casing and valve rod together to rotate by rotating handwheel, indicating ring is subject to the restriction of screw rod, moves up and down along externally threaded thread groove, the open and-shut mode of display valve.
The externally threaded number of turns on described valve stem casing is more than or equal to valve rod from the rotating cycle be opened to throttle down process.
The top of described pressure cap is provided with two tapped holes, arranges certain span between these two tapped holes; The bottom of the screw rod described in every root is screwed in corresponding tapped hole respectively, is fixedly installed on the top of described pressure cap, makes to be provided with gap between two screw rods.
One end of described indicating ring is provided with the baffle plate of protrusion, and this baffle plate passes from the gap between described two screw rods.
The aperture of the through hole of described indicating ring is greater than the externally threaded effective diameter of thread on valve stem casing, and is less than this externally threaded Major Diam.
The inwall of the through hole of described indicating ring is provided with a circle teeth groove.
The thickness of described indicating ring is less than or equal to the half of the externally threaded pitch on valve stem casing.
Described switch display device also comprises support ring, and its connection is arranged between the top of described valve stem casing and the top of two screw rods, fixes the top of two screw rods.
Described support ring has first fixed hole, and is arranged on two the second fixed holes of this first fixed hole side; First fixed hole is set on valve stem casing, and is positioned at externally threaded top; Two the second fixed holes are then set in the top of two screw rods respectively, and arrange nut at the upper-lower position of each second fixed hole respectively, and fastening nut is to be located at support ring fixed cover on screw rod.
The aperture of the first fixed hole of described support ring is less than the externally threaded Major Diam on valve stem casing, and this support ring utilizes the convex portion fixed cover of outside thread top to be located on valve stem casing.
In sum, the switch display device for flap type provided by the utility model, has the following advantages and beneficial effect: 1, structure is simple, only simply transform on existing flap type valve mechanism, increase arrange number of spare parts less, handling and easy to maintenance, with low cost; 2, carrying out rotary valve rod cover by rotating handwheel, making the outside thread on valve stem casing drive indicating ring to move up and down, thus display valve switch process, easy to operate; 3, because indicating ring is exposed outside flap type, significantly display valve switch state can be known, just can differentiate the on off state of valve a long way off, reliably easy.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the switch display device for flap type in the utility model;
Fig. 2 is the cross-sectional view of the valve stem casing in the utility model;
Fig. 3 is the cross-sectional view of the pressure cap in the utility model;
Fig. 4 is the plan view of Fig. 3;
Fig. 5 is the plan structure schematic diagram of the indicating ring in the utility model;
Fig. 6 is the plan structure schematic diagram of the support ring in the utility model.
Embodiment
Below in conjunction with Fig. 1 ~ Fig. 6, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, for provided by the utility model for the switch display device of flap type, wherein, described flap type comprises: valve rod 10; Pressure cap 1, it is set in outside described valve rod 10; Valve stem casing 2, to be arranged on bottom it between described valve rod 10 and pressure cap 1 and to be fixedly installed on the top of valve rod 10 by safety pin 9, coordinating simultaneously and install, stretch out in the middle part of it with the top of top by pressure cap 1 with bearing 8; Handwheel 6, as depicted in figs. 1 and 2, it is fixedly installed on the top 22 of described valve stem casing 2, rotates this handwheel 6 and valve stem casing 2 and valve rod 10 can be driven together to rotate.
Described switch display device comprises: two screw rods 3, all be arranged in parallel with described valve stem casing 2, and the bottom of every root screw rod 3 is fixedly installed on the top of described pressure cap 1, and is provided with gap between two screw rods 3; Outside thread 21, as shown in Figure 2, it is arranged on the outer wall at the middle part of described valve stem casing 2; Indicating ring 4, as shown in Figure 5, it has a through hole 43, and this through hole 43 to be set on described valve stem casing 2 and to be embedded in the thread groove of outside thread 21; And one end of this indicating ring 4 is passed from the gap between described two screw rods 3; During opening and closing valve, valve stem casing 2 and valve rod 10 is driven together to rotate by rotating handwheel 1, indicating ring 4 is rotated along the thread groove of outside thread 21, one end due to indicating ring 4 is clipped in the gap between two screw rods 3, restriction indicating ring 4 is followed valve stem casing 2 and is carried out circular-rotation, indicating ring 4 is moved up and down, the open and-shut mode of display valve along the thread groove of outside thread 21.
The number of turns of the outside thread 21 on described valve stem casing 2 is more than or equal to valve rod 10 from the rotating cycle be opened to throttle down process.
As shown in Figure 3 and Figure 4, the top of described pressure cap 1 is provided with two tapped holes 11, arranges certain span 12 between these two tapped holes 11; The bottom of the screw rod 3 described in every root is screwed in corresponding tapped hole 11 respectively, is fixedly installed on the top of described pressure cap 1, makes to be provided with gap between two screw rods 3.
As shown in Figure 5, one end of described indicating ring 4 is provided with the baffle plate 41 of protrusion, and this baffle plate 41 passes from the gap between described two screw rods 3.
The aperture D of the through hole 43 of described indicating ring 4 is greater than the effective diameter of thread of the outside thread 21 on valve stem casing 2, and is less than the Major Diam of this outside thread 21.
The inwall of the through hole 43 of described indicating ring 4 is provided with a circle teeth groove 42, makes indicating ring 4 when moving up and down along the thread groove rotation of the outside thread 21 on valve stem casing 2, can frictional force be reduced.
The thickness of described indicating ring 4 is less than or equal to the half of the pitch of the outside thread 21 on valve stem casing 2.
As shown in Figure 1, described switch display device also comprises support ring 7, and its connection is arranged between the top 22 of described valve stem casing 2 and the top of two screw rods 3, for fixing the top of two screw rods 3.
As shown in Figure 6, described support ring 7 has first fixed hole 71, and is arranged on two the second fixed holes 72 of this first fixed hole 71 side; First fixed hole 71 is set on valve stem casing 2, and is positioned at the top of outside thread 21; Two the second fixed holes 72 are set in the top of two screw rods 3 respectively, and arrange nut 5 at the upper-lower position of each second fixed hole 72 respectively, and fastening nut 5 is to be located at support ring 7 fixed cover on screw rod 3.
The aperture of the first fixed hole 71 of described support ring 7 is less than the Major Diam of the outside thread 21 on valve stem casing 2, and this support ring 7 utilizes the convex portion fixed cover of outside thread 21 top to be located on valve stem casing 2.
In the present embodiment, the outside thread 21 on described valve stem casing 2 is sinistral external thread.When opening or close flap type valve, drive valve stem casing 2 to rotate by rotation hand wheel 6, and this valve stem casing 2 being together rotated by safety pin 9 connecting band ovable valve stem 10, thus realizing unlatching or the closedown of flap type valve.Among this process, along with the rotary motion of valve stem casing 2, indicating ring 4 can be driven together to rotate along the thread groove of the outside thread 21 on valve stem casing 2, but the baffle plate 41 due to indicating ring 4 is folded in the gap between two screw rods 3, therefore follow while valve stem casing 2 carries out circular-rotation limiting indicating ring 4, the relative screw rod 3 of this indicating ring 4 is moved up and down, because the baffle plate 41 of this indicating ring 4 is exposed to flap type outside, therefore, it is possible to by the relative position residing for screw rod 3 of the baffle plate 41 of this indicating ring 4, the on off state of explicit judgement current flat panel valve valve.
In sum, the switch display device for flap type provided by the utility model, has the following advantages and beneficial effect: 1, structure is simple, only simply transform on existing flap type valve mechanism, increase arrange number of spare parts less, handling and easy to maintenance, with low cost; 2, carrying out rotary valve rod cover by rotating handwheel, making the outside thread on valve stem casing drive indicating ring to move up and down, thus display valve switch process, easy to operate; 3, because indicating ring is exposed outside flap type, significantly display valve switch state can be known, just can differentiate the on off state of valve a long way off, reliably easy.
Although content of the present utility model has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (10)
1., for a switch display device for flap type, described flap type comprises:
Valve rod (10);
Pressure cap (1), it is set in described valve rod (10) outward;
Valve stem casing (2), is arranged on the top being also fixedly installed on valve rod (10) between described valve rod (10) and pressure cap (1) by safety pin (9), stretches out in the middle part of it with the top of top by pressure cap (1) bottom it;
Handwheel (6), it is fixedly installed on the top (22) of described valve stem casing (2), rotates this handwheel (6) and valve stem casing (2) and valve rod (10) can be driven together to rotate;
It is characterized in that, described switch display device comprises:
Two screw rods (3), all be arranged in parallel with described valve stem casing (2), and the bottom of every root screw rod (3) is fixedly installed on the top of described pressure cap (1), and are provided with gap between two screw rods (3);
Outside thread (21), it is arranged on the outer wall at the middle part of described valve stem casing (2);
Indicating ring (4), it has a through hole (43), this through hole (43) is set in described valve stem casing (2) and goes up and be embedded in the thread groove of outside thread (21), and one end of this indicating ring (4) is passed from the gap between described two screw rods (3);
During opening and closing valve, drive valve stem casing (2) and valve rod (10) together to rotate by rotating handwheel (6), indicating ring (4) is subject to the restriction of screw rod (3), and the thread groove along outside thread (21) moves up and down, the open and-shut mode of display valve.
2., as claimed in claim 1 for the switch display device of flap type, it is characterized in that, the number of turns of the outside thread (21) on described valve stem casing (2) is more than or equal to valve rod (10) from the rotating cycle be opened to throttle down process.
3., as claimed in claim 1 for the switch display device of flap type, it is characterized in that: the top of described pressure cap (1) is provided with two tapped holes (11), between these two tapped holes (11), certain span (12) is set;
The bottom of the screw rod (3) described in every root is screwed in corresponding tapped hole (11) respectively, is fixedly installed on the top of described pressure cap (1), makes to be provided with gap between two screw rods (3).
4., as claimed in claim 1 for the switch display device of flap type, it is characterized in that: one end of described indicating ring (4) is provided with the baffle plate (41) of protrusion, and this baffle plate (41) passes from the gap between described two screw rods (3).
5. as claimed in claim 4 for the switch display device of flap type, it is characterized in that: the aperture of the through hole (43) of described indicating ring (4) is greater than the effective diameter of thread of the outside thread (21) on valve stem casing (2), and is less than the Major Diam of this outside thread (21).
6., as claimed in claim 4 for the switch display device of flap type, it is characterized in that: the inwall of the through hole (43) of described indicating ring (4) is provided with a circle teeth groove (42).
7., as claimed in claim 5 for the switch display device of flap type, it is characterized in that, the thickness of described indicating ring (4) is less than or equal to the half of the pitch of the outside thread (21) on valve stem casing (2).
8. as claimed in claim 1 for the switch display device of flap type, it is characterized in that: described switch display device also comprises support ring (7), between the top (22) that its connection is arranged on described valve stem casing (2) and the top of two screw rods (3), fix the top of two screw rods (3).
9., as claimed in claim 8 for the switch display device of flap type, it is characterized in that: described support ring (7) has first fixed hole (71), and be arranged on two the second fixed holes (72) of this first fixed hole (71) side;
First fixed hole (71) is set on valve stem casing (2), and is positioned at the top of outside thread (21);
Two the second fixed holes (72) are then set in the top of two screw rods (3) respectively, and arrange nut (5) at the upper-lower position of each second fixed hole (72) respectively, and fastening nut (5) is to be located at support ring (7) fixed cover on screw rod (3).
10. as claimed in claim 9 for the switch display device of flap type, it is characterized in that: the aperture of first fixed hole (71) of described support ring (7) is less than the Major Diam of the outside thread (21) on valve stem casing (2), and this support ring (7) utilizes the convex portion fixed cover of outside thread (21) top to be located on valve stem casing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808293.1U CN204345053U (en) | 2014-12-19 | 2014-12-19 | A kind of switch display device for flap type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808293.1U CN204345053U (en) | 2014-12-19 | 2014-12-19 | A kind of switch display device for flap type |
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| Publication Number | Publication Date |
|---|---|
| CN204345053U true CN204345053U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420808293.1U Active CN204345053U (en) | 2014-12-19 | 2014-12-19 | A kind of switch display device for flap type |
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| CN (1) | CN204345053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122573A (en) * | 2016-08-22 | 2016-11-16 | 江苏神通阀门股份有限公司 | A kind of pipeline ball-valve valve rod protection structure |
-
2014
- 2014-12-19 CN CN201420808293.1U patent/CN204345053U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122573A (en) * | 2016-08-22 | 2016-11-16 | 江苏神通阀门股份有限公司 | A kind of pipeline ball-valve valve rod protection structure |
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