CN2895912Y - Two-way metal sealed cutting butterfly valve - Google Patents
Two-way metal sealed cutting butterfly valve Download PDFInfo
- Publication number
- CN2895912Y CN2895912Y CN 200620031622 CN200620031622U CN2895912Y CN 2895912 Y CN2895912 Y CN 2895912Y CN 200620031622 CN200620031622 CN 200620031622 CN 200620031622 U CN200620031622 U CN 200620031622U CN 2895912 Y CN2895912 Y CN 2895912Y
- Authority
- CN
- China
- Prior art keywords
- butterfly plate
- valve
- butterfly
- sealing
- valve seat
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a two-way metal sealed cutting butterfly valve which comprises a valve body, a valve seat which is mounted in the internal cavity of the valve body, a butterfly plate which is in a sealed conjunction with the valve seat and a valve shaft which is connected with the butterfly plate; wherein the longitudinal section of the butterfly plate is a groove-shaped structure, the valve shaft penetrates the connecting lever of the butterfly plate to be connected with the butterfly plate by a dowel, the structures of both the valve seat and the butterfly plate are double eccentric structures, the sealing face of the butterfly plate is a spherical surface, and an alloy-steel plate is mounted on both sealing faces of the butterfly plate and the valve seat by build-up welding. The advantages of the utility model are in that the adoption of the eccentric spherical hard sealing structure satisfies the requirements of two-way sealing, in particular for a high pressure high grain density medium, the hard alloy plate mounted on the sealing faces by build-up welding greatly improves the performance in scratch strength and anti-scaling, and a non-toxic epoxy powder coating pasted on the inside surface of the cavity of the valve body and the surface of the butterfly plate adheres to the surface of the casting hard after the heat cure treatment and does not cause a secondary pollution.
Description
Technical field
The utility model relates to the butterfly valve that uses on the urban pipe network systemic circulation waterpipe, especially relates to bidirectional metal sealing and cuts off butterfly valve.
Background technique
Existing metallic sealing butterfly valve, two eccentric metal elastic packings and the three eccentric graphite metal sandwich sealing configurations of adopting in use expose following deficiency: 1, can't realize two way sealed more.2, cause the sealing pair scratch to lose efficacy easily to impure high medium, reduce working life.3, sealing surface uses the Expanded graphite interlayer, unhygienic, pollution medium and environment.
The model utility content
The utility model purpose is to provide a kind of long service life, free of contamination bidirectional metal sealing to cut off butterfly valve.
For achieving the above object, the utility model can be taked following technical proposals:
Bidirectional metal sealing described in the utility model cuts off butterfly valve, and it comprises valve body, is arranged on the valve seat of described body cavity, the butterfly plate that cooperates with described valve base sealing, and with the valve shaft that is connected with described butterfly plate, described butterfly plate longitudinal section is " [" shape structure; Described valve shaft runs through the connecting lever of butterfly plate and is connected with butterfly plate by pin; Valve seat, butterfly plate are two eccentric structures; The sealing surface of butterfly plate is a sphere, adopts the built-up welding mode to be provided with the alloyed steel layer on the sealing contact surface of butterfly plate and valve seat respectively.
Be coated with nontoxic epoxy powder coating layer on described body cavity surface, butterfly plate surface.
Inlet at described valve body is provided with the adjustment ring.
Advantage of the present utility model is to adopt two eccentric sphere hard sealing structures, has satisfied the requirement of two way sealed, and long service life is particularly useful for high pressure and contains the high medium of particle; Sealing surface weld deposit has the hard alloy layer of high hardness, has improved scrape resistence, resistive connection dirt performance greatly; On the body cavity surface, the butterfly plate surface is coated with nontoxic epoxy powder coating layer, after heat cure is handled, attached to the inner and outer surface of foundry goods, can not cause secondary pollution to tap water very securely.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Embodiment
As shown in the figure, bidirectional metal sealing described in the utility model cuts off butterfly valve, and it comprises valve body 1, be arranged on the valve seat 2 of described valve body 1 inner chamber, with the butterfly plate 3 that described valve seat 2 is sealed and matched, with the valve shaft 4 that is connected with described butterfly plate 3, described butterfly plate 3 longitudinal sections are " [" shape structure; Described valve shaft 4 runs through the connecting lever 5 of butterfly plate 3 and is connected with butterfly plate 3 by pin 6; Valve seat 2, butterfly plate 3 are two eccentric structures; The sealing surface of butterfly plate 3 is a sphere, adopts the built-up welding mode to be provided with alloyed steel layer 7 respectively on the sealing contact surface of butterfly plate 3 and valve seat 2.Be coated with a nontoxic epoxy powder coating layer on valve body 1 surface of internal cavity, butterfly plate 3 surfaces.Inlet at valve body 1 is provided with adjustment ring 8.
Claims (3)
1, a kind of bidirectional metal sealing cuts off butterfly valve, it comprises valve body (1), be arranged on the valve seat (2) of described valve body (1) inner chamber, the butterfly plate (3) that is sealed and matched with described valve seat (2), valve shaft (4) with being connected with described butterfly plate (3) is characterized in that: described butterfly plate (3) longitudinal section is " [" shape structure; Described valve shaft (4) runs through the connecting lever (5) of butterfly plate (3) and is connected with butterfly plate (3) by pin (6); Valve seat (2), butterfly plate (3) are two eccentric structures; The sealing surface of butterfly plate (3) is a sphere, adopts the built-up welding mode to be provided with alloyed steel layer (7) respectively on the sealing contact surface of butterfly plate (3) and valve seat (2).
2, ball valve according to claim 1 is characterized in that: be coated with nontoxic epoxy powder coating layer on described valve body (1) surface of internal cavity, butterfly plate (3) surface.
3, ball valve according to claim 1 and 2 is characterized in that: the inlet at described valve body (1) is provided with adjustment ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031622 CN2895912Y (en) | 2006-04-19 | 2006-04-19 | Two-way metal sealed cutting butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031622 CN2895912Y (en) | 2006-04-19 | 2006-04-19 | Two-way metal sealed cutting butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2895912Y true CN2895912Y (en) | 2007-05-02 |
Family
ID=38065488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620031622 Expired - Fee Related CN2895912Y (en) | 2006-04-19 | 2006-04-19 | Two-way metal sealed cutting butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2895912Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900851A (en) * | 2011-07-26 | 2013-01-30 | 天特阀门集团有限责任公司 | Bidirectional rigidly-sealed butterfly valve |
-
2006
- 2006-04-19 CN CN 200620031622 patent/CN2895912Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900851A (en) * | 2011-07-26 | 2013-01-30 | 天特阀门集团有限责任公司 | Bidirectional rigidly-sealed butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |