CN203906840U - Abrasion-resistant low-noise stop valve - Google Patents
Abrasion-resistant low-noise stop valve Download PDFInfo
- Publication number
- CN203906840U CN203906840U CN201420343938.9U CN201420343938U CN203906840U CN 203906840 U CN203906840 U CN 203906840U CN 201420343938 U CN201420343938 U CN 201420343938U CN 203906840 U CN203906840 U CN 203906840U
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- CN
- China
- Prior art keywords
- valve
- valve rod
- resistant low
- wear
- stop valve
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Abstract
The utility model discloses an abrasion-resistant low-noise stop valve. The stop valve comprises parts such as a valve body, a valve clack, a valve rod, a pressing sleeve and the like, wherein a bonnet is connected with the valve body, the valve rod is fixedly connected with the valve clack through the pressing sleeve, a body of the valve rod is sleeved with the pressing sleeve, a lock washer for fastening the pressing sleeve can be arranged on the pressing sleeve, and a conical-surface-shaped sealing surface welding layer is arranged at the contact part of the valve clack and the valve body. The abrasion-resistant low-noise stop valve further comprises a valve rod support ring, wherein two ends of the valve rod support ring are connected with the valve rod and the valve body respectively, and the valve rod support ring and the pressing sleeve form two fulcrums for the valve rod, so that the valve rod moves more stably, and the deflection can be reduced; the valve clack is in a ball streamline shape, so that turbulent currents and eddy currents can be avoided when media flow through the valve clack quickly, vibration of the valve clack and the valve body can be reduced, and noises can be reduced. Besides, a plurality of grooves can also be formed inside and outside the body of the valve rod, and O-shaped coils are placed in the grooves, so that dynamic sealing can be formed, abrasion can be reduced, and leakage can be reduced.
Description
Technical field
The utility model relates to valve field, relates in particular to a kind of wear-resistant low noise stop valve.
Background technique
Stop valve claims again pipe valve valve, refers to the valve that closure member (flap) moves along valve seat center line.Its closed principle is to rely on valve rod pressure, is that valve clack sealing surface and sealing surface of seat are combined closely, and stops medium circulation, thereby realizes the closure of valve.Stop valve only allows medium one-way flow, has directivity during installation, and the structure length of stop valve is greater than gate valve, and fluid resistance is large simultaneously, and during long-time running, sealing reliability is not strong.Sealed type stop valve has been eliminated the fast shortcoming of easily leaking of common valve stem packing seal aging, has not only improved use energy efficiency, has increased the Security of manufacturing mechanism, has reduced maintenance expenses machine and has maintained frequently, and clean and safe working environment is also provided.
Sealed type stop valve is divided into soft sealing type, hard sealed type, these three kinds of soft and hard seals simultaneously.The stop valve of common employing soft seal, exists the poor defect of high-voltage performance, and soft material easily weares and teares, and having used sealability of a specified duration can variation.And common hard sealed stop valve mainly contains two kinds of cone sealing stop valve and plane sealed stop valves in the market, its structural principle is to be opened and done lifting or rotary lifting movement (thereby Stem Mut trapezoidal thread and valve rod trapezoidal thread coordinate band ovable valve stem flap) by handwheel or drive unit, and the axial pressure while closing by valve rod is blocked flap and valve body tight seal the circulation of medium.But the fluid resistance of these two kinds of stop valves is large, and medium circulation time can produce eddy current or turbulent flow, and the vibrations of flap and valve body are also larger.In addition, can produce very large noise during medium flow at high speed.
Model utility content
The purpose of this utility model is to overcome the above-mentioned defect existing in prior art, and a kind of wear-resistant, low noise stop valve that seepage is low is provided.
For achieving the above object, the utility model provides following technological scheme:
A kind of wear-resistant low noise stop valve, comprise valve body, flap, valve rod, valve gap and gland, described valve gap is connected with described valve body, described valve rod is by described gland and described flap Joint, described gland is enclosed within on the shaft of described valve rod, on described flap, be provided with sealing surface layer with the place, contact position of described valve body, it is characterized in that, also comprise valve rod support ring, the two ends of described valve rod support ring are connected with described valve body with described valve rod respectively, and described valve rod support ring and described gland form two fulcrums to described valve rod; Described flap is bulb streamline shape.
Preferably, described sealing surface layer is cone-shaped.
Preferably, described sealing surface is hard sealing and/or soft seal.
Preferably, on described gland, be provided with for fastening lock washer.
Preferably, at described valve rod support ring and described valve rod contacting point, be provided with groove, at least one seal ring is installed in described groove.
Preferably, in the contacting point of described gland and described valve rod, be provided with groove, at least one seal ring is installed in described groove.
Preferably, in the lower end of described valve rod, be provided with groove, at least one seal ring is installed in described groove.
Preferably, described seal ring is O type circle, and the material of described O type circle is rubber, polyurethane TPU or teflon.
Compared with prior art, the utlity model has following beneficial effect:
1) valve rod support ring and gland form two fulcrums to valve rod, make stem movement more steady, and can reduce amount of deflection;
2) flap is bulb streamline shape, can make medium Rapid Flow when flap without turbulent flow and eddy current, reduce the vibrations of flap and valve body, thereby reduce noise.
3) at valve rod inside and outside, be also provided with a plurality of grooves, lay O type coil in groove, this can form dynamic seal (packing), thereby reduces wearing and tearing, reduces seepage.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment technology, to the accompanying drawing of required use in embodiment's technical description be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the partial schematic diagram of the wear-resistant low noise stop valve of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the utility model embodiment's technological scheme is carried out to clear, complete description.
Embodiment
Fig. 1 is the partial schematic diagram of wear-resistant low noise stop valve in the utility model.This is wear-resistant, and low noise stop valve comprises valve body 1, valve rod 2, valve gap 3, the fusiform flap 4 of bulb, gland 5, lock washer 6, valve rod support ring 7.Wherein, valve gap 3 is connected with valve body 1, and valve rod 2 is by gland 5 and flap 4 Joints, and gland 5 is enclosed within on the shaft of valve rod 2, and lock washer 6 is positioned on gland 5, gland 5 is carried out fastening, in case its downslide.On flap 4, be provided with sealing surface layer 9 with the place, contact position of valve body 1,9 one-tenth cone-shapeds of sealing face layer, and adopt hard sealing pile-up welding hard alloy, if needed, also can adopt soft seal or while soft and hard seal.The two ends of valve rod support ring 7 are connected with valve body 1 with valve rod 2 respectively, and valve rod support ring 7 forms two fulcrums with 5 pairs of valve rods of gland 2, makes the motion of valve rod 2 more steady, can also reduce amount of deflection.At valve rod support ring 7 and contacting point and the gland 5 of valve rod 2, with the contacting point of valve rod 2, groove can be set, seal ring 8 is installed in groove, preferably, seal ring 8 is O type circle.In addition, at least one seal ring 8 being installed in the groove being provided with in the lower end of valve rod 2, is three in the present embodiment, preferably, seal ring 8 is O type circle, and the material of O type circle can be the materials such as rubber, polyurethane TPU or teflon, but is not limited to above-mentioned material.
Medium enters from the below of flap 4, from the sidepiece of flap 4, flows out.When MEDIA FLOW is during through flap 4, through calculating and analyze the streamline border of flap 4, thereby impel medium to flow according to calculating track, avoid forming eddy current or turbulent flow, this has reduced the vibrations of flap 4 and valve body 1, thereby reduces the noise that medium flow at high speed produces.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the present invention can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a wear-resistant low noise stop valve, comprise valve body, flap, valve rod, valve gap and gland, described valve gap is connected with described valve body, described valve rod is by described gland and described flap Joint, described gland is enclosed within on the shaft of described valve rod, on described flap, be provided with sealing surface layer with the place, contact position of described valve body, it is characterized in that, also comprise valve rod support ring, the two ends of described valve rod support ring are connected with described valve body with described valve rod respectively, and described valve rod support ring and described gland form two fulcrums to described valve rod; Described flap is bulb streamline shape.
2. a kind of wear-resistant low noise stop valve according to claim 1, is characterized in that, described sealing surface layer is cone-shaped.
3. a kind of wear-resistant low noise stop valve according to claim 1 and 2, is characterized in that, described sealing surface is hard sealing and/or soft seal.
4. a kind of wear-resistant low noise stop valve according to claim 1, is characterized in that, on described gland, is provided with for fastening lock washer.
5. a kind of wear-resistant low noise stop valve according to claim 1, is characterized in that, at described valve rod support ring and described valve rod contacting point, is provided with groove, and at least one seal ring is installed in described groove.
6. a kind of wear-resistant low noise stop valve according to claim 1, is characterized in that, in the contacting point of described gland and described valve rod, is provided with groove, and at least one seal ring is installed in described groove.
7. a kind of wear-resistant low noise stop valve according to claim 1, is characterized in that, in the lower end of described valve rod, is provided with groove, and at least one seal ring is installed in described groove.
8. according to a kind of wear-resistant low noise stop valve described in any one in claim 5-7, it is characterized in that, described seal ring is O type circle, and the material of described O type circle is rubber, polyurethane TPU or teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343938.9U CN203906840U (en) | 2014-06-25 | 2014-06-25 | Abrasion-resistant low-noise stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420343938.9U CN203906840U (en) | 2014-06-25 | 2014-06-25 | Abrasion-resistant low-noise stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906840U true CN203906840U (en) | 2014-10-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420343938.9U Expired - Fee Related CN203906840U (en) | 2014-06-25 | 2014-06-25 | Abrasion-resistant low-noise stop valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN203906840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469739A (en) * | 2018-12-30 | 2019-03-15 | 宁夏吴忠生辉仪表有限公司 | The double guiding single-seat adjusting valves of multichannel |
-
2014
- 2014-06-25 CN CN201420343938.9U patent/CN203906840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469739A (en) * | 2018-12-30 | 2019-03-15 | 宁夏吴忠生辉仪表有限公司 | The double guiding single-seat adjusting valves of multichannel |
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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: 20141029 Termination date: 20150625 |
|
| EXPY | Termination of patent right or utility model |