CN202867883U - Center line-type butterfly valve - Google Patents
Center line-type butterfly valve Download PDFInfo
- Publication number
- CN202867883U CN202867883U CN 201220554987 CN201220554987U CN202867883U CN 202867883 U CN202867883 U CN 202867883U CN 201220554987 CN201220554987 CN 201220554987 CN 201220554987 U CN201220554987 U CN 201220554987U CN 202867883 U CN202867883 U CN 202867883U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly
- valve body
- butterfly plate
- center line
- 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 relates to the technical field of a butterfly valve, in particular to a center line-type butterfly valve. The center line-type butterfly valve comprises a valve body, a butterfly plate, a valve rod, a valve seat and a handle. The valve rod is inserted in a lower shaft hole which is formed in the valve body through filler, a filler press cover and the butterfly plate, and the filler, the filler press cover and the butterfly plate are arranged on the valve body. The valve seat is stuck to an inner cavity of the valve body, the end face of a water inlet and the end face of a water outlet. A sealing face of the butterfly plate is designed into a spherical shape and fits in with the valve seat in a sealing mode. The handle fits in with and is connected with the valve rod, and the handle and the valve rod are fixed to form a whole through a hexagonal head bolt. The center line-type butterfly valve effectively solves the problems of gap swaying or invalidation of the opening and closing of the valve, and the gap swaying or the invalidation of the opening and closing of the valve is easily produced in the process of opening and closing the valve. The center line-type butterfly valve enables the valve to be precisely opened, closed and located, enables the transmission to be stable, strengthens sealing performance of the valve and prolongs service lift of the valve.
Description
Technical field
The utility model relates to the butterfly valve technical field, particularly a kind of centre-pivoted butterfly valve.
Background technique
Centre-pivoted butterfly valve is comprised of valve body, butterfly plate, valve rod, valve seat and start-stop device.Existing centre-pivoted butterfly valve ubiquity following defective: one, valve rod and butterfly plate is connected to connect or be processed into square at the tail end of valve rod with taper pin and is connected with butterfly plate.The former, valve rod adopts shaft type usually, produces easily fracture with the taper pin of butterfly plate joint or comes off, and causes valve opening and closing out of control.The latter, valve rod adopts long and short axle construction usually, produces easily the gap and rock in the process of valve opening and closing, affects the working life of valve seal pair, and not quick detachable in the maintenance of valve.Two, existing valve seat adopts hard backrest structure design, and there is less gap width the cooperation place of valve seat and valve body, produces herein easily the valve leak phenomenon.Three, existing upper sealing structure of valve adopts O shape coil structures, and O shape circle produces wearing and tearing, seal leakage phenomenon in the generation easily in the opening-closing process of valve.Think and overcome above-mentioned defective that it is very necessary that the center line butterfly valve carries out structural improvement.
The model utility content
The purpose of this utility model is for the deficiencies in the prior art, and a kind of simple in structure, reliable centre-pivoted butterfly valve of sealability is provided.
For achieving the above object, the utility model is by the following technical solutions:
A kind of centre-pivoted butterfly valve described in the utility model comprises valve body, butterfly plate, valve rod, valve seat and handle.Described valve rod is inserted in the bottom axis hole of valve body by filler, Gland and the butterfly plate that is arranged on the valve body; Described valve seat sticks on the end face of the internal chamber wall of valve body and entery and delivery port; The sealing surface of described butterfly plate is designed to spherical shape and cooperates with valve base sealing; Described handle and valve rod are connected and are fixed by hexagon head bolt and connect as one.
Further, the terminal cross section of described valve rod be shaped as the zigzag fashion spline, its size and shape and butterfly plate endoporus cross section are consistent, both are connected and are integrated and are inserted in by butterfly plate in the axis hole of valve body lower portion, and the other end of valve rod cooperates with valve seal by Gland and filler.
Further, described filler comprises packing support plate ring and y-shaped ring, and described packing support plate ring is installed in the packing groove bottom of valve body; Described y-shaped ring is installed in the upper end of packing support plate ring; The two by Gland closely together and be fixed in the valve body packing groove.
After adopting said structure, the utility model beneficial effect is: the valve rod of the utility model centre-pivoted butterfly valve is that the zigzag fashion spline fitted is connected with the Placement of butterfly plate, effectively solved the problem that rock in the generation gap or valve opening and closing lost efficacy easily in the process of valve opening and closing, make the valve opening and closing location more accurate, more stable transmission.The upper design of Sealing Structure of valve is packing seal structure, has effectively solved the valve leak problem that causes because of the circle wearing and tearing of O shape, makes the sealability of valve more reliable and be not easy wearing and tearing, has increased the working life of valve.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is packing support plate ring cross-sectional view.
Fig. 3 is Y shape seal ring cross-sectional view.
Among the figure:
1, valve body 2, valve rod 3, valve seat 4, butterfly plate
5, packing support plate ring 6, y-shaped ring 7, socket head screw 8, Gland
9, hexagon head bolt I 10, tooth plate 11, handle 12, hexagon head bolt II
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1 to Figure 3, a kind of centre-pivoted butterfly valve described in the utility model comprises valve body 1, valve rod 2, valve seat 3, butterfly plate 4 and handle, and above-mentioned several parts consist of the utility model agent structure.
Described valve rod 2 terminal cross sections be shaped as the zigzag fashion spline, the top cross section be shaped as square, valve rod 2 is inserted in the bottom axis hole of valve body 1 by filler, Gland 8 and the butterfly plate 4 that is arranged on the valve body 1; The inner chamber shape of cross section of described butterfly plate 4 is the zigzag fashion spline, its size equates with valve rod 2 terminal cross sections, both are connected and are integrated, and it is excessive with butterfly plate 4 Joint failures or joint gap effectively to solve valve rod 2, thereby produce the problem that valve opening and closing lost efficacy and keying is rocked easily.
Described valve seat 3 sticks on the end face of the internal chamber wall of valve body 1 and entery and delivery port and butterfly plate 4 Spherical Seals faces are sealed and matched.
Described filler, comprise packing support plate ring 5 and y-shaped ring 6, the two is installed in the packing groove of valve body 1 and by Gland 8 with from bottom to top form respectively the two is closely connected together, Gland 8 is fixed on the valve body 1 by socket head screw 7, can regulate the degree of tightness of Gland 8, reality is to the adjusting of the utility model top seal effect.
Described handle comprises tooth plate 10 and handle 11 2 parts, and described tooth plate 10 is installed on the middle flanged surface of valve body 1 and is fixed on the valve body 1 by hexagon head bolt I 9; It is consistent with the square cross-sectional sizes on valve rod 2 tops that the end face of described handle 11 is provided with the square through hole, the two is connected and is integrated, and drives butterfly plate 4 by handle with sleeve 11 and does the keying angle that 90 ° of teeth groove that rotatablely move and can rely on the tooth plate 10 come positioning valve.
The above only is preferred embodiments of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (3)
1. centre-pivoted butterfly valve, comprise valve body (1), valve rod (2), valve seat (3), butterfly plate (4) and handle, it is characterized in that: described valve rod (2) is inserted in the bottom axis hole of valve body (1) by filler, Gland (8) and the butterfly plate (4) that is arranged on the valve body (1); Described valve seat (3) sticks on the end face of the internal chamber wall of valve body (1) and entery and delivery port; The sealing surface of described butterfly plate (4) is designed to spherical shape and is sealed and matched with valve seat (3); Described handle and valve rod (2) are connected and are fixed by hexagon head bolt II (12) and be integrated.
2. centre-pivoted butterfly valve according to claim 1 is characterized in that: the terminal cross section of described valve rod (2) be shaped as the zigzag fashion spline, its size and shape and butterfly plate (4) inner chamber cross section is consistent, both are connected and are integrated.
3. centre-pivoted butterfly valve according to claim 1 is characterized in that: described filler, comprise packing support plate ring (5), y-shaped ring (6) two parts, and the two is by Gland (8) closely together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554987 CN202867883U (en) | 2012-10-27 | 2012-10-27 | Center line-type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220554987 CN202867883U (en) | 2012-10-27 | 2012-10-27 | Center line-type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867883U true CN202867883U (en) | 2013-04-10 |
Family
ID=48034605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220554987 Expired - Fee Related CN202867883U (en) | 2012-10-27 | 2012-10-27 | Center line-type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322213A (en) * | 2013-07-05 | 2013-09-25 | 杨元亭 | Center glue-lined butterfly valve for medium-pressure pipeline |
| CN107654668A (en) * | 2016-07-26 | 2018-02-02 | 天津奇昌阀门制造有限公司 | The preparation method of butterfly plate impact resistance more preferably valve |
-
2012
- 2012-10-27 CN CN 201220554987 patent/CN202867883U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322213A (en) * | 2013-07-05 | 2013-09-25 | 杨元亭 | Center glue-lined butterfly valve for medium-pressure pipeline |
| CN107654668A (en) * | 2016-07-26 | 2018-02-02 | 天津奇昌阀门制造有限公司 | The preparation method of butterfly plate impact resistance more preferably valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20151027 |
|
| EXPY | Termination of patent right or utility model |