CN103867734A - Check valve with elastic spiral clamping sleeve - Google Patents
Check valve with elastic spiral clamping sleeve Download PDFInfo
- Publication number
- CN103867734A CN103867734A CN201410110145.7A CN201410110145A CN103867734A CN 103867734 A CN103867734 A CN 103867734A CN 201410110145 A CN201410110145 A CN 201410110145A CN 103867734 A CN103867734 A CN 103867734A
- Authority
- CN
- China
- Prior art keywords
- valve
- check valve
- cutting ferrule
- clamping sleeve
- elastic spiral
- 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.)
- Granted
Links
- 230000007797 corrosion Effects 0.000 claims abstract description 9
- 238000005260 corrosion Methods 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- -1 chemical engineering Substances 0.000 abstract 1
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 230000006837 decompression Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a check valve with an elastic spiral clamping sleeve. The check valve comprises a valve body, a valve seat, a valve clack, a valve rod, padding, a hinge pin, a valve cover, a valve rod nut and a hand wheel. The elastic spiral clamping sleeve is arranged between the lower portion of the valve rod located in the valve body and the valve clack. Defects of existing valves are overcome with the combination of the diverting, pressure reducing and cavitation resisting principle and a sealing structure. According to the check valve with the elastic spiral clamping sleeve, the elastic spiral clamping sleeve is used for enabling the check valve to be wholly opened for a long time, and the functions of sealing, pressure reducing, diverting, cavitation resisting, impact corrosion reducing on the valve rod by fluid, vibration preventing and noise lowering are achieved. When the valve rod nut fails, the function of a safety valve is achieved. The impact failure resisting capability of the check valve is improved, noise is lowered, the service life of the check valve is prolonged, and the requirement for the performance of the check valve by various special fluid media is met. The check valve with the elastic spiral clamping sleeve can meet the requirements of the fields of petroleum, chemical engineering, water conservancy and the like.
Description
Technical field
The present invention relates to a kind of stop valve, especially relate to a kind of stop valve with elastic helix cutting ferrule.
Background technique
Due in switching process between sealing surface frictional force little, more durable, Lift is little, easy to manufacture, easy to maintenance, is not only applicable to mesolow, and is applicable to high pressure.The closed principle of stop valve is that dependence valve thick stick pressure, fits tightly valve clack sealing surface and sealing surface of seat, stops medium circulation.Stop valve is only permitted medium one-way flow, has directivity when installation.The structure length of stop valve is greater than gate valve, and fluid resistance is large simultaneously, and when long-time running, sealing reliability is not strong.
In petrochemical industry, oil and energy industry, chloroazotic acid, sulfuric acid, hydrochloric acid, hydrofluoric acid and the various organic acid of various concentration, strong acid, strong oxidizer, and the highly basic organic solvent of various concentration and other corrosive gas, in the pipeline of liquid medium, stop valve is one of fluid control elements of extensive use the most, control the circulation of this special fluid, must there is corresponding survivability and avoid corrosion and the temporary impact of fluid to sealing surface to destroy.
But existing stop valve is in design course of working, seldom consider valve sealability in valve body in the time of standard-sized sheet, and the impingment corrosion that is subject in special fluid of valve rod, less for the research that the time that is held open is grown, thereby affect the performance and used life of valve, therefore, be just of great practical significance for a kind of stop valve with elastic helix cutting ferrule that keeps the normal work of valve under full-gear of development.
Summary of the invention
In order to overcome the deficiency of stop valve in background technique, the object of the present invention is to provide a kind of stop valve with elastic helix cutting ferrule, thereby reduce the cavitation that valve produces in the time of standard-sized sheet, noise, the corrosion of the special fluid that valve rod is subject to is impacted, change valve inner impact flow, improve the valve effect in working life.Valve rod nut played the effect of safety valve while inefficacy, and did not increase the heavy burden of valve.
The technical solution used in the present invention is:
The present invention includes valve body, valve seat, flap, valve rod, filler, bearing pin, valve gap, Stem Mut and handwheel.Be positioned between the stem lower portion of valve body and flap elastic helix cutting ferrule is housed.
Described elastic helix cutting ferrule is that outer surface is the cylindrical body that helix structure, center have hole.
The external diameter of described elastic helix cutting ferrule is 2.44D, and internal diameter is 1.88D, and pitch is 1/6D, and D is and the stem diameter of the elastic helix cutting ferrule endoporus section of cooperation.
The material of described elastic helix cutting ferrule is corrosion resistant teflon.
The beneficial effect that the present invention has is:
The present invention is intended to some shortcomings by solve modern valve in conjunction with shunting decompression and anti-cavitation erosion principle and sealing configuration.Make full use of elastic helix cutting ferrule and make stop valve in the time that the long period keeps standard-sized sheet, play sealing, decompression shunting, prevents cavitation, reduces fluid to valve rod impingment corrosion, the effect of vibrationproof noise reduction.In the time that Stem Mut lost efficacy, play the effect of safety valve.Improve shock resistance damage capability and the noise of stop valve, increased the life-span of stop valve simultaneously, adapted to the demand of multiple special flow body medium to stop valve performance.
The present invention can meet the demand in the fields such as oil, chemical industry and water conservancy.
Accompanying drawing explanation
Fig. 1 is the structural representation of stop valve.
Fig. 2 is the plan view of Fig. 1 Elastic spiral cutting ferrule.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is elastic helix ferrule structure stereogram of the present invention.
In Fig. 1: 1, valve body, 2, valve seat, 3, flap, 4, valve rod, 5, light-duty elastic helix cutting ferrule, 6, filler, 7, bearing pin, 8, valve gap, 9, Stem Mut, 10, handwheel.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention includes valve body 1, valve seat 2, flap 3, valve rod 4, filler 6, bearing pin 7, valve gap 8, Stem Mut 9 and handwheel 10.Be positioned between valve rod 4 bottoms of valve body 1 and flap 3 elastic helix cutting ferrule 5 is housed.Drive handwheel 10 to drive the flap 3 and the elastic helix cutting ferrule 5 that are arranged in valve gap 8 and valve body 1 to move up and down through valve rod 4, elastic helix cutting ferrule passes through tolerance fit, be arranged on flap 3 tops to this section of valve rod of valve wide open, between flap 3 tops and elastic helix cutting ferrule 5 bottom surface of contact, seal by seal ring, flap 3 is realized the opening and closing of stop valve by moving up and down.
As shown in Figure 2, Figure 3, Figure 4, described elastic helix cutting ferrule 5 is that outer surface is the cylindrical body that helix structure, center have hole.
The external diameter of described elastic helix cutting ferrule 5 is 2.44D, and internal diameter is 1.88D, and pitch is 1/6D, and D is and the stem diameter of the elastic helix cutting ferrule endoporus section of cooperation.Selection of dimension can also be carried out feasibility adjustment according to practical application.
The material of described elastic helix cutting ferrule 5 is chosen cheap light-duty resistant material as far as possible.As corrosion resistant teflon.
working principle of the present invention is:
When valve is gradually in opening process, medium is during by valve, due to elastic helix cutting ferrule 5, can make to reduce by the medium velocity of stop valve in the situation of little aperture, thereby play shunting decompression effect.In the time of valve wide open, reaching stable is, for the stop valve working long hours in opening, plays sealing, and decompression shunting, prevents cavitation, reduces fluid to valve rod impingment corrosion, the effect that anti-vibration and noise is made an uproar, thus extend working life of valve.In the time that Stem Mut lost efficacy, play the effect of safety valve.And adapt to the demand of multiple special flow body medium to stop valve performance.
Claims (4)
1. with a stop valve for elastic helix cutting ferrule, comprise valve body (1), valve seat (2), flap (3), valve rod (4), filler (6), bearing pin (7), valve gap (8), Stem Mut (9) and handwheel (10); It is characterized in that: be positioned between valve rod (4) bottom of valve body (1) and flap (3) elastic helix cutting ferrule (5) is housed.
2. a kind of stop valve with elastic helix cutting ferrule according to claim 1, is characterized in that: described elastic helix cutting ferrule (5) be outer surface be helix structure, center has the cylindrical body in hole.
3. a kind of stop valve with elastic helix cutting ferrule according to claim 1, it is characterized in that: the external diameter of described elastic helix cutting ferrule (5) is 2.44D, internal diameter is 1.88D, and pitch is 1/6D, and D is and the stem diameter of the elastic helix cutting ferrule endoporus section of cooperation.
4. a kind of stop valve with light-duty elastic helix cutting ferrule according to claim 1, is characterized in that: the material of described elastic helix cutting ferrule (5) is corrosion resistant teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110145.7A CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110145.7A CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867734A true CN103867734A (en) | 2014-06-18 |
| CN103867734B CN103867734B (en) | 2016-03-09 |
Family
ID=50906579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410110145.7A Active CN103867734B (en) | 2014-03-24 | 2014-03-24 | With the stop valve of elastic helix cutting ferrule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103867734B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907249A (en) * | 1973-03-15 | 1975-09-23 | Ba Installationsutveckling Ab | Valve device for restricting the flow of a liquid by a helical flow passage |
| CN202432037U (en) * | 2011-12-13 | 2012-09-12 | 上海倍夫克阀门有限公司 | Stop valve |
| CN102966744A (en) * | 2012-11-28 | 2013-03-13 | 江苏鼎晟阀门有限公司 | Chlorine stop valve |
| CN202851993U (en) * | 2012-10-23 | 2013-04-03 | 河南航天液压气动技术有限公司 | Corrugated pipe stop valve |
| CN203115112U (en) * | 2012-12-21 | 2013-08-07 | 尹波 | Cover type sealing cutoff valve |
| CN203880112U (en) * | 2014-03-24 | 2014-10-15 | 浙江理工大学 | Stop valve with elastic spiral clamping sleeve |
-
2014
- 2014-03-24 CN CN201410110145.7A patent/CN103867734B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3907249A (en) * | 1973-03-15 | 1975-09-23 | Ba Installationsutveckling Ab | Valve device for restricting the flow of a liquid by a helical flow passage |
| CN202432037U (en) * | 2011-12-13 | 2012-09-12 | 上海倍夫克阀门有限公司 | Stop valve |
| CN202851993U (en) * | 2012-10-23 | 2013-04-03 | 河南航天液压气动技术有限公司 | Corrugated pipe stop valve |
| CN102966744A (en) * | 2012-11-28 | 2013-03-13 | 江苏鼎晟阀门有限公司 | Chlorine stop valve |
| CN203115112U (en) * | 2012-12-21 | 2013-08-07 | 尹波 | Cover type sealing cutoff valve |
| CN203880112U (en) * | 2014-03-24 | 2014-10-15 | 浙江理工大学 | Stop valve with elastic spiral clamping sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867734B (en) | 2016-03-09 |
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| C14 | Grant of patent or utility model | ||
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