CN203627819U - High-pressure pin-free butterfly valve - Google Patents
High-pressure pin-free butterfly valve Download PDFInfo
- Publication number
- CN203627819U CN203627819U CN201320729827.7U CN201320729827U CN203627819U CN 203627819 U CN203627819 U CN 203627819U CN 201320729827 U CN201320729827 U CN 201320729827U CN 203627819 U CN203627819 U CN 203627819U
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- CN
- China
- Prior art keywords
- valve
- rotary shaft
- valve plate
- coaxially installed
- rotating shaft
- 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 a high-pressure pin-free butterfly valve. The high-pressure pin-free butterfly valve comprises a transmission device, a valve plate, a valve seat, a valve body, an upper rotary shaft and a lower rotary shaft, wherein the valve plate is coaxially installed in the valve seat in a guiding and rotating mode, the lower rotary shaft is installed in the middle of the lower end of the valve plate and is coaxially installed in a shaft hole formed in the lower portion of the valve body in a rotary mode, the upper rotary shaft is coaxially installed in the middle of the upper end of the valve plate, filler is coaxially installed in the portion, outside the upper rotary shaft, of the valve body, a sealing gland is coaxially installed outside a valve rod at the upper end of the valve body, multiple O-shaped sealing rings are arranged between the sealing gland and the valve seat in a sleeved mode at intervals in the axial direction of the outer circle of the upper rotary shaft, and the portions, between the multiple O-shaped sealing rings, of the upper rotary shaft are sleeved with copper shaft sleeves. The high-pressure pin-free butterfly valve has the advantages that the sealing performance is good, the valve can be opened easily, sealing is reliable, the elastic memory is good, the service life is long, and the valve can be directly in contact with acid and alkaline media and can be widely applied to various pipeline regulating and throttling devices.
Description
Technical field
The utility model belongs to valve field, and especially a kind of high pressure is without pin butterfly valve.
Background technique
The valve that high-pressure medium environment uses exists Sealing easily to produce elastic fatique, ageing of rubber and get rusty, the problem such as distortion, cause seal failure.And existing butterfly valve valve rod is connected with valve plate and conventionally adopts on valve plate punching that pin is installed to be fixed; cannot meet the materials demand of image height aggressive medium; the position of mounting hole that pin is especially installed is easily corroded, damages, and becomes leak point, and valve plate spraying protective layer is also comparatively difficult.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, a kind of simple in structure, design science, good sealing effect is provided, opens high pressure that valve is light and handy without pin butterfly valve.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of high pressure is without pin butterfly valve, comprise transmission device, valve plate, valve seat, valve body, upper rotating shaft and lower rotary shaft, in this valve seat, coaxial guided rotation is provided with a valve plate, this middle part, valve plate lower end is provided with a lower rotary shaft, this lower rotary shaft coaxial rotation is arranged in the made axis hole of valve body lower portion, is coaxially installed with rotating shaft in valve plate upper center; The valve body lower end of described lower rotary shaft lower end is coaxially fixed with an end cap, between this end cap and lower rotary shaft, be coaxially installed with a spring washer, it is characterized in that: in the valve body outside described upper rotating shaft, be coaxially installed with filler, and be coaxially installed with sealing gland outward at the valve rod of valve body upper end, between sealing gland and valve seat, upper rotating shaft outside journal axle is equipped with multiple O type ring seal rings to spacer sleeve, in the upper rotating shaft between the plurality of O type ring seal ring, is all set with copper axle sleeve.
And the lower end of described upper rotating shaft is shaped with milling square column type valve rod, valve plate upper end is coaxially shaped with the milling square column type blind hole with milling square column type valve rod form fit, and milling square column type valve rod rotates with the coaxial setting-in of valve plate drive valve plate.
And the upper end of described upper rotating shaft is stretched out sealing gland upper end and is coaxially installed with a transmission device, the neat key of joint of setting-in between this transmission device and sealing gland.
Advantage of the present utility model and good effect are:
1, between the valve shaft of this butterfly valve and valve plate, coordinate for milling square column type, connect without taper pin, simple in structure easy for installation, particularly valve plate does not need drilling, guarantees integrity and the leak resistance of valve plate.
2, this butterfly valve compare common have pin butterfly valve without pin do not exist pin leak, valve plate leak source is few, and the anti-corrosion material processing such as high pressure can be PT in valve plate surface without pin butterfly valve, PTFE, according to selecting different materials valve plate can be arranged on special media pipeline, make it use more extensively diversification more.
3, good airproof performance of the present utility model, opens that valve is light and handy, sealing is reliable, elastic memory is good and long service life, can be direct and acid alkaline medium contact, can be widely used in multiple pipeline adjusting and cut-off device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be Fig. 1 in cut open left view;
Fig. 3 is the A portion partial schematic diagram in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of high pressure is without pin butterfly valve, comprise transmission device 1, valve plate 4, valve seat 5, valve body 6, upper rotating shaft 8 and lower rotary shaft 11, in valve body, be coaxially fixed with the valve seat that vulcanized rubber is made, in this valve seat, coaxial guided rotation is provided with a valve plate, this middle part, valve plate lower end is provided with a lower rotary shaft, this lower rotary shaft coaxial rotation is arranged in the made axis hole of valve body lower portion, is coaxially installed with rotating shaft in valve plate upper center.
In order to guarantee lower rotary shaft flexible rotating, the valve body lower end of described lower rotary shaft lower end is coaxially fixed with an end cap 7, is coaxially installed with a spring washer 10 between this end cap and lower rotary shaft.
Innovative point of the present utility model is:
In order to guarantee the sealing of upper rotating shaft, in valve body outside described upper rotating shaft, be coaxially installed with filler 14, and be coaxially installed with sealing gland 2 outward at the valve rod of valve body upper end and prevent that filler from leaking, on this, the upper end of rotating shaft is stretched out sealing gland upper end and is coaxially installed with a transmission device, the neat key of joint 13 of setting-in between this transmission device and sealing gland, neat key of joint prevents transmission device pivot offset.
Between sealing gland and valve seat, upper rotating shaft outside journal axle is equipped with three O type ring seal rings 15 to spacer sleeve, in upper rotating shaft between these three O type ring seal rings, be all set with copper axle sleeve 16, frictional force can reduce switch time, significantly reduces water leakage phenomenon and seal ring is changed in the construction of can not cutting off the water.
The lower end of described upper rotating shaft is shaped with milling square column type valve rod 9, and valve plate upper end is coaxially shaped with the milling square column type blind hole with milling square column type valve rod form fit, and milling square column type valve rod rotates with the coaxial setting-in of valve plate drive valve plate, and valve plate is connected without pin with valve rod.
In order to guarantee valve plate intensity, in the cavity of described valve plate inside, be fixed with uniformly at intervals many supporting structures 12.
This structure in use, is shaped with two direct contact mediums of parts of valve plate and valve seat, connects without pin or screw, effectively avoids contact and division corrosion.
For the ease of valve installation, at subsurface, interval is fixed with ground foot rest 3 outside described valve body.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. a high pressure is without pin butterfly valve, comprise transmission device, valve plate, valve seat, valve body, upper rotating shaft and lower rotary shaft, in this valve seat, coaxial guided rotation is provided with a valve plate, this middle part, valve plate lower end is provided with a lower rotary shaft, this lower rotary shaft coaxial rotation is arranged in the made axis hole of valve body lower portion, is coaxially installed with rotating shaft in valve plate upper center; The valve body lower end of described lower rotary shaft lower end is coaxially fixed with an end cap, between this end cap and lower rotary shaft, be coaxially installed with a spring washer, it is characterized in that: in the valve body outside described upper rotating shaft, be coaxially installed with filler, and be coaxially installed with sealing gland outward at the valve rod of valve body upper end, between sealing gland and valve seat, upper rotating shaft outside journal axle is equipped with multiple O type ring seal rings to spacer sleeve, in the upper rotating shaft between the plurality of O type ring seal ring, is all set with copper axle sleeve.
2. high pressure according to claim 1 is without pin butterfly valve, it is characterized in that: the lower end of described upper rotating shaft is shaped with milling square column type valve rod, valve plate upper end is coaxially shaped with the milling square column type blind hole with milling square column type valve rod form fit, and milling square column type valve rod rotates with the coaxial setting-in of valve plate drive valve plate.
3. high pressure according to claim 1, without pin butterfly valve, is characterized in that: the upper end of described upper rotating shaft is stretched out sealing gland upper end and is coaxially installed with a transmission device, the neat key of joint of setting-in between this transmission device and sealing gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320729827.7U CN203627819U (en) | 2013-11-15 | 2013-11-15 | High-pressure pin-free butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320729827.7U CN203627819U (en) | 2013-11-15 | 2013-11-15 | High-pressure pin-free butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627819U true CN203627819U (en) | 2014-06-04 |
Family
ID=50814300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320729827.7U Expired - Fee Related CN203627819U (en) | 2013-11-15 | 2013-11-15 | High-pressure pin-free butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627819U (en) |
-
2013
- 2013-11-15 CN CN201320729827.7U patent/CN203627819U/en not_active Expired - Fee Related
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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: 20140604 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |