CN102678948A - Butterfly valve - Google Patents
Butterfly valve Download PDFInfo
- Publication number
- CN102678948A CN102678948A CN2012101891108A CN201210189110A CN102678948A CN 102678948 A CN102678948 A CN 102678948A CN 2012101891108 A CN2012101891108 A CN 2012101891108A CN 201210189110 A CN201210189110 A CN 201210189110A CN 102678948 A CN102678948 A CN 102678948A
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- China
- Prior art keywords
- valve
- butterfly
- valve body
- groove
- butterfly plate
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Abstract
The invention relates to a butterfly valve, comprising a valve body, a butterfly plate and a valve rod. The valve body is provided with an axle hole; the valve rod passes through the axle hole and is fixedly connected with the butterfly plate; the valve body is matched with the butterfly plate to form a passage which can be opened or closed; a sealing mechanism is arranged between the valve body and the butterfly plate, and comprises a groove arranged on the valve body and a sealing ring arranged in the groove; the sealing ring is provided with a dovetail groove part which is reversely inserted in the groove; resin is injected between the dovetail groove part and the groove; and when the butterfly valve is under a closed state, the butterfly plate is attached to the sealing ring. By setting the groove and the sealing ring to seal the valve body and the butterfly plate, the butterfly valve has the advantages of simple structure, good sealing effect, convenience in installation and online maintenance.
Description
Technical field
the present invention relates to a kind of valve, particularly relate to a kind of butterfly valve.
Background technique
butterfly valve is Flap valve again, is a kind of modulating valve simple in structure, also can be used for the switch control of low pressure pipeline medium simultaneously.Butterfly valve is meant that closure member (flap or butterfly plate) is a disk, rotates a kind of valve that reaches open and close around valve shaft, and main rising cut off and throttling action on pipeline.The butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.Butterfly valve is applicable in the engineering systems such as producer, coal gas, rock gas, LPG, town gas, cold and hot air, chemical industry smelting and generation environment-friendly and carries on the pipeline of various corrosivity, non-corrosive fluids medium, is used to regulate and block flowing of medium.
The key of the keying of
butterfly valve is the sealing between valve body and the butterfly plate; Because butterfly plate is in the state of switching for a long time; And the friction between the valve body is more; Cause sealing variation or blow-by thereby all be easy to generate wearing and tearing between the two, the serious whole butterfly valve that makes is scrapped, and it keeps in repair the also inconvenience of ten minutes.
Summary of the invention
the purpose of this invention is to provide a kind of butterfly valve.
For achieving the above object, the technological scheme that the present invention adopts is:
a kind of butterfly valve comprises valve body, butterfly plate and valve rod, offers axis hole on the described valve body; Described valve rod passes described axis hole and described butterfly plate is fixedly connected; Described valve body cooperates the path that forms switching with described butterfly plate, be provided with sealing mechanism between described valve body and the butterfly plate, and described sealing mechanism comprises the groove that is opened on the described valve body; Be arranged on the seal ring in the described groove; Described seal ring has a dovetail grooved limit portion, and described dovetail grooved limit portion is inserted in the described groove, and injection has resin between described dovetail grooved limit portion and the described groove; When described butterfly valve was in closed condition, described butterfly plate and described seal ring fitted.
preferably, described valve body has a ring-shaped valve seats, described ring-shaped valve seats has outer circumferential face, inner peripheral surface, described groove is opened on the inner peripheral surface of described ring-shaped valve seats.
Preferably, the surface of described valve body is offered porose, and described hole is connected with described groove,
preferably, the width of described slot opening to the width of described groove floor reduces gradually.
preferably, the material of described seal ring is an ethylene propylene diene rubber.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
Structure and valve body and the butterfly plate of
butterfly valve of the present invention through groove and seal ring are set seals, and simple in structure, good sealing effect is convenient to install and on-line maintenance.
Description of drawings
Accompanying drawing 1 is the plan view of valve body among the present invention;
Accompanying drawing 2 is the side view of valve body among the present invention;
Accompanying drawing 3 is the sectional view of valve body among the present invention;
Accompanying drawing 4 is the plan view of seal ring among the present invention;
accompanying drawing 5 is the side view of seal ring among the present invention.
wherein: 1, valve body; 10, axis hole; 11, groove; 12, ring-shaped valve seats; 120, outer circumferential face; 121, inner peripheral surface; 2, seal ring; 20, dovetail grooved limit portion; 3, hole.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
a kind of butterfly valve comprises valve body 1, butterfly plate and valve rod, offers axis hole 10 on the valve body 1, and valve rod passes axis hole 10 and is fixedly connected with butterfly plate, and valve body 1 cooperates the path that forms switching with butterfly plate.Wherein: butterfly plate, valve rod are not key points in design of the present invention, and its structure is not given unnecessary details at this.
are shown in Fig. 1-3: be provided with sealing mechanism between valve body 1 and the butterfly plate; Sealing mechanism comprises the groove 11 that is opened on the valve body 1; Be arranged on the seal ring 2 in the groove 11, in the present embodiment, valve body 1 has a ring-shaped valve seats 12; Ring-shaped valve seats 12 has outer circumferential face 120, inner peripheral surface 121, and groove 11 is opened on the inner peripheral surface 121 of ring-shaped valve seats 12; Offer porosely 3 on the surface of valve body 1, hole 3 is connected with groove 11, and specifically, hole 3 is arranged on the outer circumferential face 120 of ring-shaped valve seats 12, and the concrete quantity in hole 3 can be offered according to actual needs; In addition, the width of width to groove 11 bottom surfaces of groove 11 openings reduces gradually.
are shown in Fig. 4-5: seal ring 2 has a dovetail grooved limit portion 20, and dovetail grooved limit portion 20 is inserted in the groove 11, and injection has resin between dovetail grooved limit portion 20 and the groove 11; The material of seal ring 2 is typically chosen in ethylene propylene diene rubber (EPDM).
Below the concrete installation process of setting forth sealing mechanism in the present embodiment down:
Insert dovetail grooved limit portion 20 openings of seal ring 2
towards the bottom surface of groove 11; Because the width of width to groove 11 bottom surfaces of groove 11 openings reduces gradually; Dovetail grooved limit portion 20 inserts grooves 11 backs by the restriction of the opening of groove 11, prevents that in open and close seal ring 2 is brought out by butterfly plate; Close butterfly plate,, seal fully until seal ring 2 and butterfly plate through injecting resin in 3 pairs of grooves in hole on ring-shaped valve seats 12 outer circumferential faces 120 11; Hole 3 is sealed, and cured resin is accomplished the installation of sealing mechanism.
make itself and seal ring 2 constantly wear and tear because butterfly plate is in the state of open and close for a long time, cause seal ring 2 sealing effect variation even damaged, therefore, need online sealing mechanism be repaired.
Below concrete online mending course of setting forth sealing mechanism in the present embodiment down:
Butterfly plate is closed in
, and broken ring ring-shaped valve seats 12 has the sealing in hole 3 on the outer circumferential face 120, adopts pressure unit that pressure is provided; Continue in groove 11, to inject resin through this hole 3; Make seal ring 2 outside and butterfly plate generation extruding, seal fully, once more hole 3 is sealed until seal ring 2 and butterfly plate; Cured resin is accomplished online repairing.
the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. a butterfly valve comprises valve body, butterfly plate and valve rod, offers axis hole on the described valve body; Described valve rod passes described axis hole and described butterfly plate is fixedly connected; Described valve body cooperates the path that forms switching with described butterfly plate, it is characterized in that: be provided with sealing mechanism between described valve body and the butterfly plate, described sealing mechanism comprises the groove that is opened on the described valve body; Be arranged on the seal ring in the described groove; Described seal ring has a dovetail grooved limit portion, and described dovetail grooved limit portion is inserted in the described groove, and injection has resin between described dovetail grooved limit portion and the described groove; When described butterfly valve was in closed condition, described butterfly plate and described seal ring fitted.
2. butterfly valve according to claim 1 is characterized in that: described valve body has a ring-shaped valve seats, and described ring-shaped valve seats has outer circumferential face, inner peripheral surface, and described groove is opened on the inner peripheral surface of described ring-shaped valve seats.
3. butterfly valve according to claim 1 is characterized in that: the surface of described valve body is offered porose, and described hole is connected with described groove.
4. butterfly valve according to claim 1 is characterized in that: the width of the width of described slot opening to described groove floor reduces gradually.
5. butterfly valve according to claim 1 is characterized in that: the material of described seal ring is an ethylene propylene diene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101891108A CN102678948A (en) | 2012-06-11 | 2012-06-11 | Butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101891108A CN102678948A (en) | 2012-06-11 | 2012-06-11 | Butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102678948A true CN102678948A (en) | 2012-09-19 |
Family
ID=46811304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101891108A Pending CN102678948A (en) | 2012-06-11 | 2012-06-11 | Butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102678948A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202983B1 (en) * | 1999-10-13 | 2001-03-20 | Thomas A. Hartman | Valve seal structured to prevent circumferential slippage |
| CN201461990U (en) * | 2009-06-03 | 2010-05-12 | 上海高低压阀门有限公司 | Eccentric soft sealing butterfly valve |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
| CN202040346U (en) * | 2011-04-13 | 2011-11-16 | 天津市塘沽沃特斯阀门有限公司 | Sealing pair of eccentric flange butterfly valve |
| CN202252028U (en) * | 2011-09-21 | 2012-05-30 | 铁岭方众阀门有限公司 | Metal-rubber sealing sub butterfly valve |
| CN202597736U (en) * | 2012-06-11 | 2012-12-12 | 格朗富（苏州）集团有限公司 | Butterfly valve |
-
2012
- 2012-06-11 CN CN2012101891108A patent/CN102678948A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202983B1 (en) * | 1999-10-13 | 2001-03-20 | Thomas A. Hartman | Valve seal structured to prevent circumferential slippage |
| CN201461990U (en) * | 2009-06-03 | 2010-05-12 | 上海高低压阀门有限公司 | Eccentric soft sealing butterfly valve |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
| CN202040346U (en) * | 2011-04-13 | 2011-11-16 | 天津市塘沽沃特斯阀门有限公司 | Sealing pair of eccentric flange butterfly valve |
| CN202252028U (en) * | 2011-09-21 | 2012-05-30 | 铁岭方众阀门有限公司 | Metal-rubber sealing sub butterfly valve |
| CN202597736U (en) * | 2012-06-11 | 2012-12-12 | 格朗富（苏州）集团有限公司 | Butterfly valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120919 |