CN203463737U - High-pressure composite sealed air valve - Google Patents
High-pressure composite sealed air valve Download PDFInfo
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- CN203463737U CN203463737U CN201320479661.8U CN201320479661U CN203463737U CN 203463737 U CN203463737 U CN 203463737U CN 201320479661 U CN201320479661 U CN 201320479661U CN 203463737 U CN203463737 U CN 203463737U
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- floating drum
- valve gap
- valve
- hard
- described valve
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Abstract
The utility model discloses a high-pressure composite sealed air valve used for pipelines. The high-pressure composite sealed air valve comprises a valve body, a buoy, a valve deck, a guide sleeve, a valve rod, a spring, a pressing plate, a fastening nut and a dust cover, wherein a rubber sealing ring is arranged at the place where the buoy and the valve deck are sealed and is mounted on the buoy; the hard sealing conical surface of the valve deck and the hard sealing spherical surface of the buoy form a hard sealing pair; the hard sealing conical surface of the valve deck and the rubber sealing ring of the buoy form a soft sealing pair. The high-pressure composite sealed air valve provided by the utility model has the advantages of good sealing performance, zero leakage, high nominal pressure and long service life.
Description
Technical field
The utility model belongs to waterline protective equipment technical field, is specifically related to a kind of high pressure compound seal air valve.
Background technique
On the high point of the pressure tank of pumping plant and each aqueduct, air valve is installed, for the air in aqueduct being discharged outward during water-filling after aqueduct initial stage water-filling, pipeline periodical repair, is avoided pressure surge; When negative pressure appears in aqueduct generation water hammer, air valve is opened, and makes pipeline outer air enter pipeline, in order to avoid produce larger negative pressure in pipeline, plays a protective role; In pipe-line system when operation,, while air soluble in water being released when pipeline internal cause pressure or temperature variation, air valve is discharged it in time, prevents from forming air bag in pipeline and affects the operation of pipe-line system.In prior art, air valve has a lot of structural type, but has many problems, as not up to standard in suction tolerance, only depends on the secondary sealing of hard envelope in use to have poorly sealed leaking, and only depends on the secondary sealing of soft envelope to exist applicable nominal pressure not high.Therefore, providing a kind of high pressure compound seal air valve that can overcome above-mentioned one or more defects is problems that those skilled in the art need solution badly.
Model utility content
The purpose of this utility model is to provide a kind of good airproof performance, zero leakage, high pressure compound seal air valve that nominal pressure is high.
In order to realize above-mentioned first object, the utility model provides a kind of high pressure compound seal air valve, for pipeline, comprise valve body, floating drum, valve gap, guide sleeve, valve rod, spring, pressing plate, locking nut, dust-proof cover, described floating drum is connected with described valve rod, described guide sleeve is arranged on described valve gap and is set in described valve rod near on described valve gap one end, described spring housing is loaded on described valve rod, described pressing plate is pressed on described spring, described locking nut is arranged on described valve rod, and described pressing plate is between described locking nut and described valve rod, described valve body is fixedly connected with described valve gap, described valve gap is fixedly connected with described dust-proof cover, described floating drum and described valve bonnet seal place are provided with rubber seal, described rubber seal is arranged on described floating drum, it is secondary that hard sealing cone on described valve gap and the hard seal ball face on described floating drum form hard envelope, it is secondary that hard sealing cone on described valve gap and the described rubber seal on described floating drum form soft envelope.
Preferably, on described floating drum and described valve gap surface of contact, be provided with dovetail groove, described rubber seal is arranged in this dovetail groove.
Preferably, the hard sealing cone on described valve gap and the hard seal ball face on described floating drum are provided with built-up welding stainless steel lining.
Preferably, described valve body and described valve gap are bolted to connection, and described valve gap and described dust-proof cover are bolted to connection.
Compared with prior art, high pressure compound seal air valve provided by the utility model has the following advantages:
1, by rubber seal is installed on floating drum, it is secondary that hard sealing cone on valve gap and the hard seal ball face on floating drum form hard envelope, it is secondary that hard sealing cone on valve gap and the described rubber seal on floating drum form soft envelope, thereby at valve gap, build the composite seal pair that hard envelope is secondary and soft envelope parafacies is combined between floating drum, utilized hard envelope pair can bear the advantage of high pressure head, soft seal can stop seepage under low pressure, the advantage of good sealing effect, thereby realize sealing and the zero leakage of bubble level, the spring energy that the buoyancy that floating drum produces and spring provide is offset floating drum, valve rod, pressing plate, the gravity of locking nut, thereby switching motion is flexible, simultaneously, the floating drum top bearing capacity of spherical shell shape is strong, the applicable nominal pressure of air valve is greatly improved,
2, by be provided with dovetail groove on floating drum and valve gap surface of contact, and rubber seal is arranged in this dovetail groove, can effectively prevents that rubber seal from use coming off, thereby further improve air valve stability in use;
3, by equal one deck built-up welding stainless steel lining on the hard sealing cone on valve gap and the hard seal ball face on floating drum, can improve scour resistance and the corrosion resistance of valve gap and floating drum surface of contact, thus the working life of improving air valve.
In sum, high pressure compound seal air valve provided by the utility model, has advantages of good airproof performance, zero leakage, nominal pressure is high and long service life.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's of a kind of high pressure compound seal air valve that the utility model proposes structural representation;
Fig. 2 is the sealed department bit architecture schematic diagram of Fig. 1 mesohigh compound seal air valve.
Embodiment
The purpose of this utility model is to provide a kind of good airproof performance, zero leakage, high pressure compound seal air valve that nominal pressure is high.
In order to make those skilled in the art understand better the technical solution of the utility model; below in conjunction with accompanying drawing, the utility model is described in detail; the description of this part is only exemplary and explanatory, should not have any restriction to protection domain of the present utility model.
Please refer to Fig. 1 and in conjunction with Fig. 2, in one embodiment, a kind of high pressure compound seal air valve provided by the utility model, for pipeline, comprise valve body 1, floating drum 2, rubber seal 3, valve gap 4, guide sleeve 5, valve rod 6, spring 7, pressing plate 8, locking nut 9, dust-proof cover 10, floating drum 2 is connected with valve rod 6, guide sleeve 5 is arranged on valve gap 4 and is set in valve rod 6 near on valve gap 4 one end, hard sealing cone on valve gap 4 and the hard seal ball face on floating drum 2 are provided with built-up welding stainless steel lining 11, in built-up welding stainless steel lining 11 on hard seal ball face on floating drum 2, be provided with dovetail groove, rubber seal 3 is arranged in this dovetail groove, it is secondary that hard sealing cone on valve gap 4 and the hard seal ball face on floating drum 2 form hard envelope, it is secondary that hard sealing cone on valve gap 4 and the rubber seal on floating drum 23 form soft envelope, spring 7 is set on valve rod 6, pressing plate 8 is pressed on spring 7, locking nut 9 is arranged on valve rod 6, and pressing plate 8 is between locking nut 9 and valve rod 6, valve body 1 is bolted to connection with valve gap 4, valve gap 4 is bolted to connection with dust-proof cover 10, floating drum 2 is provided with rubber seal 3 with valve gap 4 sealings place, valve body 1, floating drum 2 is cylindrical shape, air-discharging is entered in dust-proof cover 10 perforates.
Compared with prior art, the high pressure compound seal air valve that the present embodiment provides has the following advantages:
1, by rubber seal 3 is installed on floating drum 2, it is secondary that hard sealing cone on valve gap 4 and the hard seal ball face on floating drum 2 form hard envelope, it is secondary that hard sealing cone on valve gap 4 and the described rubber seal on floating drum 23 form soft envelope, thereby at valve gap 4, build the composite seal pair that hard envelope is secondary and soft envelope parafacies is combined between floating drum 2, utilized hard envelope pair can bear the advantage of high pressure head, soft seal can stop seepage under low pressure, the advantage of good sealing effect, thereby realize sealing and the zero leakage of bubble level, the spring energy that the buoyancy that floating drum 2 produces and spring 7 provide is offset floating drum 2, valve rod 6, pressing plate 8, the gravity of locking nut 9, thereby switching motion is flexible, simultaneously, the floating drum top bearing capacity of spherical shell shape is strong, the applicable nominal pressure of air valve is greatly improved,
2, by be provided with dovetail groove on floating drum 2 and valve gap 4 surface of contact, and rubber seal 3 is arranged in this dovetail groove, can effectively prevent that rubber seal 3 from use coming off, thereby further improve air valve stability in use;
3, by equal one deck built-up welding stainless steel lining 11 on the hard sealing cone on valve gap 4 and the hard seal ball face on floating drum 2, can improve scour resistance and the corrosion resistance of valve gap 4 and floating drum 2 surface of contact, thus the working life of improving air valve.
In sum, the high pressure compound seal air valve that the present embodiment provides, has advantages of good airproof performance, zero leakage, nominal pressure is high and long service life.
It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation and another entity or control panel to separate, and not necessarily require or imply these entities or operation between exist any this reality relation or order, and, term " comprises ", " comprise " or its any other variant is intended to contain comprising of nonexcludability, thereby make to comprise the process of a series of key elements, method, which key element article or equipment not only comprise, but also comprise other key elements of clearly not listing, or be also included as this process, method, the key element that article or equipment are intrinsic.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises key element and also have other identical element.
Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.The above is only preferred implementation of the present utility model, should be understood that, finiteness due to literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvement, retouching or variation, also above-mentioned technical characteristics can be combined by rights; These improve retouching, change or combination, or without improving, the design of model utility and technological scheme are directly applied to other occasion, all should be considered as protection domain of the present utility model.
Claims (4)
1. a high pressure compound seal air valve, for pipeline, comprise valve body (1), floating drum (2), valve gap (4), guide sleeve (5), valve rod (6), spring (7), pressing plate (8), locking nut (9), dust-proof cover (10), described floating drum (2) is connected with described valve rod (6), described guide sleeve (5) is arranged on described valve gap (4) and goes up and be set in described valve rod (6) near on described valve gap (4) one end, described spring (7) is set on described valve rod (6), described pressing plate (8) is pressed on described spring (7), described locking nut (9) is arranged on described valve rod (6), and described pressing plate (8) is positioned between described locking nut (9) and described valve rod (6), described valve body (1) is fixedly connected with described valve gap (4), described valve gap (4) is fixedly connected with described dust-proof cover (10), it is characterized in that, described floating drum (2) is provided with rubber seal (3) with described valve gap (4) sealing place, described rubber seal (3) is arranged on described floating drum (2), it is secondary that hard seal ball face on hard sealing cone on described valve gap (4) and described floating drum (2) forms hard envelope, it is secondary that described rubber seal (3) on hard sealing cone on described valve gap (4) and described floating drum (2) forms soft envelope.
2. high pressure compound seal air valve according to claim 1, is characterized in that, on described floating drum (2) and described valve gap (4) surface of contact, is provided with dovetail groove, and described rubber seal (3) is arranged in this dovetail groove.
3. high pressure compound seal air valve according to claim 1 and 2, is characterized in that, the hard seal ball face on the hard sealing cone on described valve gap (4) and described floating drum (2) is provided with built-up welding stainless steel lining (11).
4. high pressure compound seal air valve according to claim 1, is characterized in that, described valve body (1) is bolted to connection with described valve gap (4), and described valve gap (4) is bolted to connection with described dust-proof cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479661.8U CN203463737U (en) | 2013-08-07 | 2013-08-07 | High-pressure composite sealed air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479661.8U CN203463737U (en) | 2013-08-07 | 2013-08-07 | High-pressure composite sealed air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463737U true CN203463737U (en) | 2014-03-05 |
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ID=50176104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320479661.8U Expired - Fee Related CN203463737U (en) | 2013-08-07 | 2013-08-07 | High-pressure composite sealed air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
-
2013
- 2013-08-07 CN CN201320479661.8U patent/CN203463737U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246978A (en) * | 2015-12-29 | 2016-12-21 | 中国特种飞行器研究所 | A kind of aerostatics is with tool-free machine automatization drain tap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20170807 |