CN106195388A - Three-eccentric butterfly valve - Google Patents
Three-eccentric butterfly valve Download PDFInfo
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- CN106195388A CN106195388A CN201610822542.6A CN201610822542A CN106195388A CN 106195388 A CN106195388 A CN 106195388A CN 201610822542 A CN201610822542 A CN 201610822542A CN 106195388 A CN106195388 A CN 106195388A
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- butterfly
- valve
- main shaft
- sealing ring
- eccentric
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- 238000007789 sealing Methods 0.000 claims abstract description 97
- 239000002184 metal Substances 0.000 claims description 29
- 239000000956 alloy Substances 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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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
- F16K1/22—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 crossing the valve member, e.g. butterfly valves
- F16K1/224—Details of bearings for the axis of rotation
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
本发明公开了一种三偏心蝶阀，包括阀体、主轴、蝶板，阀体中设置有流道内腔，阀体上设置有上主轴孔和下主轴孔；蝶板上具有主轴通孔；蝶板设置在流道内腔内，主轴依次穿过上主轴孔、主轴通孔、下主轴孔并伸出下主轴孔。本发明提供的三偏心蝶阀，有效解决了加工误差和热胀冷缩变形以及主轴在介质不平衡力作用下上下微动造成的密封面损坏等问题，同时，本发明密封可靠，结构简单合理，生产成本低，使用寿命长。
The invention discloses a triple-eccentric butterfly valve, which includes a valve body, a spindle, and a butterfly plate. The valve body is provided with a flow channel inner cavity, and the valve body is provided with an upper spindle hole and a lower spindle hole; the butterfly plate is provided with a spindle through hole; The plate is arranged in the inner cavity of the flow channel, and the spindle passes through the upper spindle hole, the spindle through hole, the lower spindle hole in sequence and extends out of the lower spindle hole. The triple-eccentric butterfly valve provided by the invention effectively solves the problems of processing errors, thermal expansion and contraction deformation, and sealing surface damage caused by the up and down micro-movement of the main shaft under the action of the unbalanced force of the medium. At the same time, the invention has reliable sealing, simple and reasonable structure. Low production cost and long service life.
Description
技术领域technical field
本发明涉及阀门技术领域，特别涉及一种三偏心蝶阀。The invention relates to the technical field of valves, in particular to a triple-eccentric butterfly valve.
背景技术Background technique
在三偏心蝶阀的设计中，通常采用在主轴底部端面与下盖板端面之间预留间隙的方式来实现对加工误差、热胀冷缩变形等的调整，在实际使用中，主轴会存在一个竖直向上的介质力，在蝶阀打开的情况下，介质力会推动主轴产生向上的微动，当蝶阀关闭时，在阀座密封面作用下，使得主轴向下微动，恢复原位，密封面这样不断地上下微动，易产生磨损，影响蝶阀的密封性和使用寿命，进而破坏了系统传输的稳定性并降低了系统的整体可靠性。In the design of the triple eccentric butterfly valve, it is usually used to reserve a gap between the bottom end surface of the main shaft and the end surface of the lower cover to realize the adjustment of machining errors, thermal expansion and contraction deformation, etc. In actual use, the main shaft will have a Vertical upward medium force, when the butterfly valve is open, the medium force will push the main shaft to produce a slight upward movement. When the butterfly valve is closed, under the action of the sealing surface of the valve seat, the main shaft will be slightly moved downward to return to its original position. The sealing surface is constantly moving up and down in this way, which is prone to wear and tear, which affects the sealing and service life of the butterfly valve, thereby destroying the stability of the system transmission and reducing the overall reliability of the system.
发明内容Contents of the invention
(一)要解决的技术问题(1) Technical problems to be solved
本发明所要解决的技术问题在于如何解决主轴在加工误差、热胀冷缩变形影响下以及介质不平衡力作用下导致的上下微动而造成的密封面损坏等问题。The technical problem to be solved by the present invention is how to solve the problems such as the damage of the sealing surface caused by the up and down micro-movement of the spindle under the influence of machining error, thermal expansion and contraction deformation, and unbalanced force of the medium.
(二)技术方案(2) Technical solutions
为了实现上述目的，本发明提供了一种三偏心蝶阀，包括阀体、主轴、蝶板，所述阀体中设置有流道内腔；所述阀体上设置有上主轴孔和下主轴孔；所述蝶板上具有主轴通孔；所述蝶板设置在流道内腔内，所述主轴依次穿过所述上主轴孔、所述主轴通孔、所述下主轴孔并伸出所述下主轴孔。In order to achieve the above object, the present invention provides a triple eccentric butterfly valve, which includes a valve body, a main shaft, and a butterfly plate. The valve body is provided with a flow channel inner cavity; the valve body is provided with an upper main shaft hole and a lower main shaft hole; The butterfly plate has a main shaft through hole; the butterfly plate is arranged in the inner cavity of the flow channel, and the main shaft passes through the upper main shaft hole, the main main shaft through hole, the lower main shaft hole in turn and extends out of the lower main shaft hole. Spindle hole.
优选地，所述上主轴孔中所述主轴与所述阀体之间，和/或所述下主轴孔中所述主轴与所述阀体之间采用填料密封。Preferably, packing seals are used between the main shaft and the valve body in the upper main shaft hole, and/or between the main shaft and the valve body in the lower main shaft hole.
优选地，所述上主轴孔中所述主轴与所述阀体之间，和/或所述下主轴孔中所述主轴与所述阀体之间设置有轴套。Preferably, a shaft sleeve is provided between the main shaft and the valve body in the upper main shaft hole, and/or between the main shaft and the valve body in the lower main shaft hole.
优选地，所述主轴与所述轴套接触处喷焊或堆焊耐磨硬质合金一。Preferably, the contact between the main shaft and the sleeve is spray-welded or overlay-welded with wear-resistant cemented carbide.
优选地，所述主轴与所述蝶板通过一个或多个键连接。Preferably, the main shaft is connected to the butterfly plate through one or more keys.
优选地，所述流道内腔内设置有阀座；所述蝶板上设置有密封环；所述密封环与所述阀座相抵接形成密封副。Preferably, a valve seat is provided in the cavity of the flow channel; a sealing ring is provided on the butterfly plate; the sealing ring abuts against the valve seat to form a sealing pair.
优选地，所述蝶板与密封环相抵接的端面设置环形槽，环形槽中设置有密封垫片。Preferably, an annular groove is provided on the end surface of the butterfly plate abutting against the sealing ring, and a sealing gasket is arranged in the annular groove.
优选地，所述密封环为全金属密封环或多层次结构密封环。Preferably, the sealing ring is an all-metal sealing ring or a multi-layer structure sealing ring.
优选地，所述阀座的阀座密封面喷焊或堆焊耐磨硬质合金二；和/或所述全金属密封环的全金属密封环密封面喷焊或堆焊耐磨硬质合金三。Preferably, the valve seat sealing surface of the valve seat is spray-welded or surfacing wear-resistant hard alloy II; and/or the full-metal sealing ring sealing surface of the all-metal sealing ring is spray-welded or surfacing wear-resistant hard alloy three.
优选地，所述阀座中阀座密封面的耐磨硬质合金二与所述全金属密封环中全金属密封环密封面的耐磨硬质合金三存在硬度差。Preferably, there is a difference in hardness between the wear-resistant hard alloy II on the sealing surface of the valve seat in the valve seat and the wear-resistant hard alloy III on the sealing surface of the all-metal sealing ring in the all-metal sealing ring.
优选地，所述阀座中阀座密封面的耐磨硬质合金二比所述全金属密封环中全金属密封环密封面的耐磨硬质合金三硬2～6洛氏硬度。Preferably, the wear-resistant cemented carbide on the sealing surface of the valve seat in the valve seat is 2-6 Rockwell harder than the wear-resistant cemented carbide on the sealing surface of the all-metal sealing ring in the all-metal sealing ring.
优选地，所述多层次结构密封环包括一个或多个金属板以及一个或多个石墨板。Preferably, the multi-layer structure sealing ring comprises one or more metal plates and one or more graphite plates.
优选地，所述金属板与所述石墨板交替压制成一整体。Preferably, the metal plates and the graphite plates are pressed alternately to form a whole.
(二)有益效果(2) Beneficial effects
本发明相比有显著的优点和有益效果：Compared with the present invention, there are significant advantages and beneficial effects:
1.通过将主轴设置在阀体的上主轴孔和下轴孔中，主轴两端均伸出阀体的方法，有效解决了主轴在加工误差、热胀冷缩变形影响下以及介质不平衡力作用下导致的上下微动而造成的密封面损坏等问题；1. By setting the main shaft in the upper main shaft hole and the lower shaft hole of the valve body, both ends of the main shaft protrude from the valve body, which effectively solves the problem of the main shaft under the influence of machining error, thermal expansion and contraction deformation, and unbalanced force of the medium. The sealing surface is damaged due to the up and down micro-movement caused by the action;
2.密封可靠，结构简单合理，生产成本底，使用寿命长。2. Reliable sealing, simple and reasonable structure, low production cost and long service life.
附图说明Description of drawings
图1为本发明实施例提供的一种三偏心蝶阀的结构示意图；Fig. 1 is a schematic structural view of a triple eccentric butterfly valve provided by an embodiment of the present invention;
图2为本发明实施例提供的一种三偏心蝶阀的阀体结构示意图；Fig. 2 is a schematic diagram of a valve body structure of a triple eccentric butterfly valve provided by an embodiment of the present invention;
图3为本发明实施例提供的一种三偏心蝶阀的主轴结构示意图；Fig. 3 is a schematic diagram of the spindle structure of a triple eccentric butterfly valve provided by an embodiment of the present invention;
图4为本发明实施例提供的一种三偏心蝶阀的蝶板结构示意图；Fig. 4 is a schematic diagram of a butterfly plate structure of a triple eccentric butterfly valve provided by an embodiment of the present invention;
图5为本发明实施例提供的一种三偏心蝶阀的密封环放大示意图。Fig. 5 is an enlarged schematic diagram of a sealing ring of a triple-eccentric butterfly valve provided by an embodiment of the present invention.
图6为本发明实施例提供的一种三偏心蝶阀的全金属密封环示意图。Fig. 6 is a schematic diagram of an all-metal sealing ring of a triple-eccentric butterfly valve provided by an embodiment of the present invention.
图7为本发明实施例提供的一种三偏心蝶阀的多层次结构密封环示意图。Fig. 7 is a schematic diagram of a multi-layer structure sealing ring of a triple-eccentric butterfly valve provided by an embodiment of the present invention.
图中：In the picture:
1.阀体；101.流道内腔；102.上主轴孔；103.阀座；104.阀座密封面；105.耐磨硬质合金二；106.下主轴孔；2.主轴；201.耐磨硬质合金一；3.蝶板；301.主轴通孔；302.环形槽；4.密封环；4a.全金属密封环；4a01.全金属密封环密封面；4a02.耐磨硬质合金三；4b.多层次结构密封环；4b01.金属板；4b02.石墨板；4b03.多层次结构密封环密封面；5.轴套；6.填料；7.键；8.密封垫片。1. Valve body; 101. Runner cavity; 102. Upper spindle hole; 103. Valve seat; 104. Valve seat sealing surface; 105. Wear-resistant hard alloy 2; 106. Lower spindle hole; 2. Spindle; 201. Wear-resistant hard alloy 1; 3. Butterfly plate; 301. Main shaft through hole; 302. Annular groove; 4. Seal ring; 4a. Full metal seal ring; 4a01. Full metal seal ring sealing surface; 4a02. Wear-resistant hard Alloy 3; 4b. Multi-level structure sealing ring; 4b01. Metal plate; 4b02. Graphite plate; 4b03. Multi-level structure sealing ring sealing surface;
具体实施方式detailed description
下面将结合本发明实施例以及附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
实施例1Example 1
如图1-4所示，本发明提供的一种三偏心蝶阀，包括阀体1、主轴2、蝶板3、阀座103，阀体1中设置有流道内腔101，阀体1上设置有上主轴孔102和下主轴孔106；蝶板3上具有主轴通孔301；流道内腔101内设置有阀座103；蝶板3设置在流道内腔101内，主轴2依次穿过上主轴孔102、主轴通孔301、下主轴孔106并伸出下主轴孔106，主轴2在阀体1的上主轴孔102和下主轴孔106中均伸出阀体1，避免了主轴2在介质不平衡力作用下上下微动造成的密封面损坏，并且主轴2能够自由上下微小窜动，实现补偿加工误差和热胀冷缩变形等的功能。As shown in Figures 1-4, a triple eccentric butterfly valve provided by the present invention includes a valve body 1, a main shaft 2, a butterfly plate 3, and a valve seat 103. There are an upper spindle hole 102 and a lower spindle hole 106; the butterfly plate 3 has a spindle through hole 301; the valve seat 103 is arranged in the flow channel inner cavity 101; the butterfly plate 3 is set in the flow channel inner cavity 101, and the main shaft 2 passes through the upper spindle in turn Hole 102, main shaft through hole 301, lower main shaft hole 106 and stretch out lower main shaft hole 106, main shaft 2 all stretches out valve body 1 in upper main shaft hole 102 and lower main shaft hole 106 of valve body 1, has avoided main shaft 2 Under the action of unbalanced force, the sealing surface is damaged due to up and down fretting, and the main shaft 2 can freely move up and down slightly, so as to realize the functions of compensating for processing errors and thermal expansion and contraction deformation.
具体地，上主轴孔102中主轴2与所述阀体1之间，以及下主轴孔106中主轴2与阀体1之间采用填料6密封；上主轴孔102中主轴2与阀体1之间，以及下主轴孔106中主轴2与阀体1之间设置有轴套5，轴套5用来支撑主轴2；主轴2与蝶板3通过至少一个键7连接。Specifically, packing 6 is used to seal between the main shaft 2 in the upper main shaft hole 102 and the valve body 1, and between the main shaft 2 and the valve body 1 in the lower main shaft hole 106; A shaft sleeve 5 is arranged between the main shaft 2 and the valve body 1 in the lower main shaft hole 106, and the shaft sleeve 5 is used to support the main shaft 2; the main shaft 2 and the butterfly plate 3 are connected by at least one key 7.
其中，主轴2与轴套5接触处喷焊或堆焊耐磨硬质合金一201，以有效减少本三偏心蝶阀的启闭力矩，同时提高主轴2的耐磨性能。Among them, the contact between the main shaft 2 and the shaft sleeve 5 is spray-welded or surfacing with wear-resistant hard alloy-201 to effectively reduce the opening and closing torque of the triple-eccentric butterfly valve and improve the wear resistance of the main shaft 2 at the same time.
根据该实施例，如图5所示，还可以包括密封环4，密封环4设置在蝶板3上，蝶板3与密封环4相抵接的端面设置环形槽302，环形槽302中设置有密封垫片8，提高密封环4和蝶板3的密封性能，实现端面密封，密封环4与阀座103相抵接形成密封副。According to this embodiment, as shown in FIG. 5 , a sealing ring 4 may also be included, and the sealing ring 4 is arranged on the butterfly plate 3. An annular groove 302 is provided on the end surface of the butterfly plate 3 abutting against the sealing ring 4, and an annular groove 302 is provided in the annular groove 302. The sealing gasket 8 improves the sealing performance of the sealing ring 4 and the butterfly plate 3 to realize end face sealing, and the sealing ring 4 abuts against the valve seat 103 to form a sealing pair.
其中，如图6所示，密封环4是全金属密封环4a。Wherein, as shown in FIG. 6 , the sealing ring 4 is an all-metal sealing ring 4a.
具体地，阀座103的阀座密封面104喷焊或堆焊耐磨硬质合金二105，全金属密封环4a的全金属密封环密封面4a01喷焊或堆焊耐磨硬质合金三4a02，以使得本三偏心蝶阀的密封副具有较高的寿命。Specifically, the valve seat sealing surface 104 of the valve seat 103 is spray-welded or surfacing wear-resistant hard alloy 2 105, and the all-metal sealing ring sealing surface 4a01 of the all-metal sealing ring 4a is spray-welded or surfacing wear-resistant hard alloy 3 4a02 , so that the sealing pair of the triple eccentric butterfly valve has a higher life.
同时，阀座103中阀座密封面104的耐磨硬质合金二105与全金属密封环4a中全金属密封环密封面4a01的耐磨硬质合金三4a02存在硬度差；耐磨硬质合金二105比全金属密封环4a中全金属密封环密封面4a01的耐磨硬质合金三4a02硬2～6洛氏硬度。这是因为密封环更换维修比阀座更方便，成本更低，这样设置以降低维护成本。At the same time, there is a hardness difference between the wear-resistant hard alloy 105 of the valve seat sealing surface 104 in the valve seat 103 and the wear-resistant hard alloy 3 4a02 of the all-metal sealing ring sealing surface 4a01 in the all-metal sealing ring 4a; 2-105 is 2-6 Rockwell hardness harder than the wear-resistant cemented carbide 3 4a02 of the all-metal sealing ring sealing surface 4a01 in the all-metal sealing ring 4a. This is because the sealing ring is more convenient to replace and maintain than the valve seat, and the cost is lower, so it is set to reduce maintenance costs.
实施例2Example 2
如图1-4所示，本发明提供的一种三偏心蝶阀，包括阀体1、主轴2、蝶板3、阀座103，阀体1中设置有流道内腔101，阀体1上设置有上主轴孔102和下主轴孔106；蝶板3上具有主轴通孔301；流道内腔101内设置有阀座103；蝶板3设置在流道内腔101内，主轴2依次穿过上主轴孔102、主轴通孔301、下主轴孔106并伸出下主轴孔106，主轴2在阀体1的上主轴孔102和下主轴孔106中均伸出阀体1，避免了主轴2在介质不平衡力作用下上下微动造成的密封面损坏，并且主轴2能够自由上下微小窜动，实现补偿加工误差和热胀冷缩变形等的功能。As shown in Figures 1-4, a triple eccentric butterfly valve provided by the present invention includes a valve body 1, a main shaft 2, a butterfly plate 3, and a valve seat 103. There are an upper spindle hole 102 and a lower spindle hole 106; the butterfly plate 3 has a spindle through hole 301; the valve seat 103 is arranged in the flow channel inner cavity 101; the butterfly plate 3 is set in the flow channel inner cavity 101, and the main shaft 2 passes through the upper spindle in turn Hole 102, main shaft through hole 301, lower main shaft hole 106 and stretch out lower main shaft hole 106, main shaft 2 all stretches out valve body 1 in upper main shaft hole 102 and lower main shaft hole 106 of valve body 1, has avoided main shaft 2 Under the action of unbalanced force, the sealing surface is damaged due to up and down fretting, and the main shaft 2 can freely move up and down slightly, so as to realize the functions of compensating for processing errors and thermal expansion and contraction deformation.
具体地，上主轴孔102中主轴2与所述阀体1之间，以及下主轴孔106中主轴2与阀体1之间采用填料6密封；上主轴孔102中主轴2与阀体1之间，以及下主轴孔106中主轴2与阀体1之间设置有轴套5，轴套5用来支撑主轴2；主轴2与蝶板3通过至少一个键7连接。Specifically, packing 6 is used to seal between the main shaft 2 in the upper main shaft hole 102 and the valve body 1, and between the main shaft 2 and the valve body 1 in the lower main shaft hole 106; A shaft sleeve 5 is arranged between the main shaft 2 and the valve body 1 in the lower main shaft hole 106, and the shaft sleeve 5 is used to support the main shaft 2; the main shaft 2 and the butterfly plate 3 are connected by at least one key 7.
其中，主轴2与轴套5接触处喷焊或堆焊耐磨硬质合金一201，以有效减少本三偏心蝶阀的启闭力矩，同时提高主轴2的耐磨性能。Among them, the contact between the main shaft 2 and the shaft sleeve 5 is spray-welded or surfacing with wear-resistant hard alloy-201 to effectively reduce the opening and closing torque of the triple-eccentric butterfly valve and improve the wear resistance of the main shaft 2 at the same time.
根据该实施例，如图5所示，还可以包括密封环4，密封环4设置在蝶板3上，蝶板3与密封环4相抵接的端面设置环形槽302，环形槽302中设置有密封垫片8，提高密封环4和蝶板3的密封性能，实现端面密封，密封环4与阀座103相抵接形成密封副。According to this embodiment, as shown in FIG. 5 , a sealing ring 4 may also be included, and the sealing ring 4 is arranged on the butterfly plate 3. An annular groove 302 is provided on the end surface of the butterfly plate 3 abutting against the sealing ring 4, and an annular groove 302 is provided in the annular groove 302. The sealing gasket 8 improves the sealing performance of the sealing ring 4 and the butterfly plate 3 to realize end face sealing, and the sealing ring 4 abuts against the valve seat 103 to form a sealing pair.
其中，如图7所示，密封环4是多层次结构密封环4b或弹性密封环。Wherein, as shown in FIG. 7 , the sealing ring 4 is a multi-layer structure sealing ring 4 b or an elastic sealing ring.
具体地，多层次结构密封环4b包括多个金属板4b01和多个石墨板4b02，具有多层次结构密封环密封面4b03，多个金属板4b01和多个石墨板4b02之间交替压制成一整体。Specifically, the multi-layer structure sealing ring 4b includes multiple metal plates 4b01 and multiple graphite plates 4b02, and has a multi-layer structure seal ring sealing surface 4b03, and the multiple metal plates 4b01 and multiple graphite plates 4b02 are alternately pressed to form a whole.
以上所述，仅为本发明的一些具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。The above are only some specific implementations of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
Claims (12)
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| CN201610822542.6A CN106195388A (en) | 2016-09-13 | 2016-09-13 | Three-eccentric butterfly valve |
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| CN201610822542.6A CN106195388A (en) | 2016-09-13 | 2016-09-13 | Three-eccentric butterfly valve |
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| CN106195388A true CN106195388A (en) | 2016-12-07 |
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| CN201610822542.6A Pending CN106195388A (en) | 2016-09-13 | 2016-09-13 | Three-eccentric butterfly valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949249A (en) * | 2017-04-13 | 2017-07-14 | 航天长征化学工程股份有限公司 | Three-eccentric butterfly valve sealing ring and three-eccentric butterfly valve |
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| US3666236A (en) * | 1969-03-07 | 1972-05-30 | Jean Gachot | Butterfly valve |
| CN201326750Y (en) * | 2008-11-20 | 2009-10-14 | 无锡智能自控工程有限公司 | Triple eccentric high-pressure metal seal butterfly valve |
| CN201827390U (en) * | 2010-09-20 | 2011-05-11 | 天工阀门集团有限公司 | Triple eccentric multilayer hard seal butterfly valve with access hole |
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| CN106949249A (en) * | 2017-04-13 | 2017-07-14 | 航天长征化学工程股份有限公司 | Three-eccentric butterfly valve sealing ring and three-eccentric butterfly valve |
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Application publication date: 20161207 |