CN203926859U - A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to - Google Patents
A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to Download PDFInfo
- Publication number
- CN203926859U CN203926859U CN201420249088.6U CN201420249088U CN203926859U CN 203926859 U CN203926859 U CN 203926859U CN 201420249088 U CN201420249088 U CN 201420249088U CN 203926859 U CN203926859 U CN 203926859U
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- Prior art keywords
- flashboard
- valve
- valve seat
- seat
- parallel
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- Expired - Lifetime
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- 230000004888 barrier function Effects 0.000 claims abstract description 7
- 239000007779 soft material Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000007789 sealing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model discloses and a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, comprise the valve seat being embedded in valve body two symmetrical seat holes, between each valve seat and seat hole, be provided with one and stop the barrier structure that valve seat moves to flashboard.The utility model is by being arranged to shaft shoulder structure by valve seat surface to the end of flashboard, then by being enclosed within guide plate on the shaft shoulder, stop that valve seat pushes flashboard to, gate valve is in opening-closing process, compacted of guide plate compresses with valve body, valve seat and flashboard are all the time in disengaged position, prevent the friction between valve seat and flashboard, reduced friction torque.
Description
Technical field
The utility model relates to a kind of gate valve, is specifically related to a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to.
Background technique
Expansion double-flashboard Parallel gate valve Parallel slide valve, has resistance of medium little, easy to operate, fast, can lead to the advantages such as the spherical pig pipe blow-through industries such as chemical industry, oil, rock gas, power plant, colliery, building, iron and steel, light industry and sewage treatment that are widely used.Conventional expansion double-flashboard Parallel gate valve Parallel slide valve, when valve closing, valve rod drives main gate-board to move downward, and auxiliary gate-board moves downward under the drive of spreading mechanism connecting rod together with main gate-board, struts major-minor flashboard realize the circulation of upstream and downstream medium and block in unlatching, the closed position of valve.Combination flashboard, at beginning and the terminal of movement process, is close to and distending effect the guarantor's effect to sealing surface while opening to reach forced seal and realization because major and minor flashboard coordinates the variation of incline position to make to combine the generation of flashboard both sides sealing face.In industry, generally believe in valve opening and closing process, between flashboard and valve seat, all the time in disengaged position, reduced the friction of sealing pair, there is the advantages such as wearing and tearing are little, good seal performance.Yet study discovery through our factory technician, because static pressure face is greater than sealing surface of seat, in valve opening and closing process, valve seat will be pushed tightly flashboard under the effect of medium power, causing can not be all the time in disengaged position between flashboard and valve seat, actual conditions are to have increased valve operation moment of torsion, are only again half of common gate valve due to the moment of torsion of expansion double-flashboard Parallel gate valve Parallel slide valve, are difficult for discovering.
Summary of the invention
The utility model provides a kind of and has prevented that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, and the valve seat that has solved conventional expanded formula double-flashboard Parallel gate valve Parallel slide valve is pushed the problem of flashboard under the effect of medium power.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is.
Prevent that valve seat from pushing an expansion double-flashboard Parallel gate valve Parallel slide valve for flashboard to, comprise the valve seat being embedded in valve body two symmetrical seat holes, between each valve seat and seat hole, be provided with one and stop the barrier structure that valve seat moves to flashboard.
Described valve seat surface is arranged to shaft shoulder structure to the end of flashboard, described barrier structure comprises the shaft shoulder and guide plate, on described guide plate, have the through hole mating with the shaft shoulder, the diameter of described through hole is less than the diameter of valve seat periphery, described guide plate is enclosed within on the shaft shoulder also by through hole, and compresses or fastening by fastening piece and valve body by compressing member and valve body.
Described compressing member is rocking arm, and the top of described rocking arm is flexibly connected with flashboard side, and oval termination is arranged in the bottom of described rocking arm, and the major axis of described oval termination mates with the distance between relative guide plate.
Described valve seat surface has annular groove on the end face of flashboard, in described annular groove, is pressed with seal ring.
Described seal ring is elasticity soft material seal ring.
On described valve seat periphery, have radially annular groove, in described annular groove, be pressed with static pressure elastomer.
The beneficial effects of the utility model are: 1, the utility model is by being arranged to shaft shoulder structure by valve seat surface to the end of flashboard, then by being enclosed within guide plate on the shaft shoulder, stop that valve seat pushes flashboard to, gate valve is in opening-closing process, compacted of guide plate compresses with valve body, valve seat and flashboard are all the time in disengaged position, prevent the friction between valve seat and flashboard, reduced friction torque; 2, when gate valve is opened, avoid valve seat to contact with flashboard sealing surface, reduce the friction of sealing, extended the gate valve life-span, promote the market core competitiveness of gate valve; 3, valve seat surface of the present utility model is provided with seal ring on the end face of flashboard, and sealing ring is elasticity soft material seal ring, makes to form resilient seal surface between valve seat and flashboard, seals tightr; 4, the utility model structural design is novel, can be directly in traditional valve seat construction transformation, make gate valve part accomplish seriation, standardization, generalization, improve the modularization of product specification and produce flexible, reduce mould and cost of production, foundry goods is general and do not need first assembling, significantly shortens manufacturing cycle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural scheme of mechanism of rocking arm.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, comprise the valve seat 2 being embedded in 1 liang of symmetrical seat hole of valve body, between each valve seat 2 and seat hole, be provided with one and stop the barrier structure that valve seat 2 moves to flashboard 3.Barrier structure comprises the shaft shoulder 4 and guide plate 5, this shaft shoulder is that the end setting towards flashboard 3 forms by valve seat 2, be that valve seat 2 is arranged to shaft shoulder structure towards the end of flashboard 3, on guide plate 5, have the through hole mating with the shaft shoulder 4, the diameter of through hole is less than the diameter of valve seat 2 peripheries, guide plate 5 is enclosed within on the shaft shoulder 4 by through hole, and compresses by compressing member and valve body 1.
Compressing member is rocking arm 7, as shown in Figure 2, the top of this rocking arm 7 is flexibly connected with flashboard 3 sides, and oval termination 8 is arranged in the bottom of rocking arm 7, and the major axis of oval termination 8 mates with the distance between relative guide plate 5, in opening-closing process, compacted of guide plate 5 compresses with valve body 1, and after opening-closing process finishes, flashboard 3 expands, directly compress guide plate 5, thus guide plate in whole process all the time in impaction state.
In order to make to form resilient seal surface between valve seat 2 and flashboard 3, seal closelyr, valve seat 2 has annular groove on the end face of flashboard 3, is pressed with seal ring 6 in annular groove, and sealing ring 6 adopts elasticity soft material seal rings.For guarantee valve seat 2 and and valve body 1 between elastic packing, on valve seat 2 peripheries, have radially annular groove, in annular groove, be pressed with static pressure elastomer 9.
Above-mentioned gate valve, when mounted, first embeds valve seat 2 in 1 hole of valve body, then guide plate 5 is enclosed within on valve seat 2, then will embed flashboard 3.
In sum, the utility model is by being arranged to shaft shoulder structure by valve seat 2 towards the end of flashboard 3, then by being enclosed within guide plate 5 on the shaft shoulder 4, stop that valve seat 2 pushes flashboard 3 to, gate valve 3 is in opening-closing process, compacted of guide plate compresses with valve body 1, valve seat 2 and flashboard 3 are all the time in disengaged position, prevented the friction between valve seat 2 and flashboard 3, reduced friction torque, when opening, gate valve avoid valve seat 2 to contact with flashboard 3 sealing surfaces, reduce the friction of sealing, extended the gate valve life-span, promote the market core competitiveness of gate valve; The utility model structural design is novel simultaneously, can be directly in traditional valve seat construction transformation, make gate valve part accomplish seriation, standardization, generalization, improve the modularization of product specification and produce flexible, reduce mould and cost of production, foundry goods is general and do not need first assembling, significantly shortens manufacturing cycle.
More than show and described basic principle of the present utility model, major character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. one kind prevents that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, it is characterized in that: comprise the valve seat (2) being embedded in valve body (1) two symmetrical seat hole, between each valve seat (2) and seat hole, be provided with one and stop that valve seat (2) is to the mobile barrier structure of flashboard (3);
Described valve seat (2) is arranged to shaft shoulder structure towards the end of flashboard (3), described barrier structure comprises the shaft shoulder (4) and the guide plate (5) in order to flashboard is led, on described guide plate (5), have the through hole mating with the shaft shoulder (4), the diameter of described through hole is less than the diameter of valve seat (2) periphery, it is upper that described guide plate (5) is enclosed within the shaft shoulder (4) by through hole, and compress by compressing member and valve body (1).
2. according to claim 1ly a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, it is characterized in that: described compressing member is rocking arm (7), the top of described rocking arm (7) is flexibly connected with flashboard (3) side, oval termination (8) is arranged in the bottom of described rocking arm (7), the distance coupling between the major axis of described oval termination (8) and relative guide plate (5).
3. according to claim 1ly a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, it is characterized in that: described valve seat (2) has annular groove on the end face of flashboard (3), in described annular groove, be pressed with seal ring (6).
4. according to claim 3ly a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, it is characterized in that: described seal ring (6) is elasticity soft material seal ring.
5. according to claim 1ly a kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to, it is characterized in that: on described valve seat (2) periphery, have radially annular groove, in described annular groove, be provided with static pressure elastomer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249088.6U CN203926859U (en) | 2014-05-16 | 2014-05-16 | A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249088.6U CN203926859U (en) | 2014-05-16 | 2014-05-16 | A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926859U true CN203926859U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249088.6U Expired - Lifetime CN203926859U (en) | 2014-05-16 | 2014-05-16 | A kind ofly prevent that valve seat from pushing the expansion double-flashboard Parallel gate valve Parallel slide valve of flashboard to |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953743A (en) * | 2014-05-16 | 2014-07-30 | 昆山维萨阀门有限公司 | Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate |
-
2014
- 2014-05-16 CN CN201420249088.6U patent/CN203926859U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953743A (en) * | 2014-05-16 | 2014-07-30 | 昆山维萨阀门有限公司 | Expansion-type dual-gate parallel gate valve capable of preventing valve seat from being pushed towards gate |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |