CN204042090U - A kind of axial flow is without shock buffer valve - Google Patents
A kind of axial flow is without shock buffer valve Download PDFInfo
- Publication number
- CN204042090U CN204042090U CN201420340696.8U CN201420340696U CN204042090U CN 204042090 U CN204042090 U CN 204042090U CN 201420340696 U CN201420340696 U CN 201420340696U CN 204042090 U CN204042090 U CN 204042090U
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- China
- Prior art keywords
- cavity
- guide
- flap
- piston
- axis
- 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 - Lifetime
Links
- 230000035939 shock Effects 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a kind of axial flow without shock buffer valve, include valve body, described valve body is provided with medium runner, flap is provided with in described medium runner, guide holder, flap is provided with the axis of guide, the described axis of guide is located in guide holder, the axis of guide is provided with piston, described guide holder is provided with positioning seat, piston cavity is provided with in positioning seat, piston is placed in described piston cavity, piston cavity includes the first cavity axially arranged along the axis of guide, second cavity, the second described cavity is positioned near flap side relative to the first cavity, positioning seat is provided with the through hole with the first cavity conducting, the diameter of the first cavity is greater than the diameter of the second cavity.Adopt technique scheme, the utility model provides a kind of axial flow type check valve, reduces water hammer pressure when it is closed, shock when simultaneously can prevent it from closing between flap and valve seat, thus guarantees the safety of valve and pipe-line system.
Description
Technical field
The utility model relates to valve field, and particularly a kind of axial flow is without shock buffer valve.
Background technique
Safety check is mainly arranged on pipe-line system, for preventing the refluence of pipeline medium.When pipeline medium forward flow, safety check flap is automatically opened under the effect of medium power, and when ducted medium reverse flow, and safety check flap is automatically closed under the effect of medium power and spring force.
Existing axial flow type check valve, generally comprise valve body, described valve body is provided with medium runner, flap, guide holder is provided with in described medium runner, flap is provided with the axis of guide, and the described axis of guide is located in guide holder, is provided with spring between described flap and guide holder, the valve seat matched with flap is provided with, the closure of check ring when flap and valve seat are conflicted in described medium runner.
But, the axial flow type check valve of this structure, when medium flows backwards, under the effect of medium power, safety check flap meeting quick closedown, in the moment of flap quick closedown, usually can produce larger water hammer pressure, water hammer pressure even can reach the several times of pipeline normal pressure, and too high water hammer pressure can cause the damage of valve and whole pipe-line system, particularly when safety check is used for the liquid pipeline system that bore is comparatively large, pressure is higher, water hammer pressure is larger; In addition, when flap quick closedown, clashing fast of flap and valve seat is abnormally dangerous, more dangerous when being inflammable, explosive medium in pipe-line system.
Summary of the invention
The purpose of this utility model: in order to overcome the defect of prior art, the utility model provides a kind of axial flow without shock buffer valve, reduce water hammer pressure when it is closed, shock when simultaneously can prevent it from closing between flap and valve seat, thus guarantee the safety of valve and pipe-line system.
The technical solution of the utility model: a kind of axial flow is without shock buffer valve, include valve body, described valve body is provided with medium runner, flap is provided with in described medium runner, guide holder, flap is provided with the axis of guide, the described axis of guide is located in guide holder, spring is provided with between described flap and guide holder, the valve seat matched with flap is provided with in described medium runner, it is characterized in that: the described axis of guide is provided with piston, described guide holder is provided with positioning seat, piston cavity is provided with in described positioning seat, described piston is placed in described piston cavity, described piston cavity includes the first cavity axially arranged along the axis of guide, second cavity, the second described cavity is positioned near flap side relative to the first cavity, positioning seat is provided with the through hole with the first cavity conducting, the diameter of the first described cavity is greater than the diameter of the second cavity.
Adopt technique scheme, when ducted medium forward flows through medium runner, the flap of safety check is opened, and medium enters piston cavity by through hole, the first cavity, the second cavity is filled up, when ducted medium flows counterflow through medium runner, flap starts to close under the effect of medium power and spring force, when flap aperture is larger, because piston is in the first cavity of piston cavity, gap between piston and the first cavity is larger, therefore, the motion of flap is not substantially by the impact of the first cavity medium, therefore, flap has closing velocity faster, when flap is closed to the less position of aperture, piston has entered in the second cavity, now, because the gap between piston and the second cavity is less, in order to close flap, the medium in piston cavity in the second cavity must be made to be discharged by the gap between piston and the second cavity, because gap is less, therefore, discharge medium and need the longer time, therefore, can be slowed down the closing velocity of flap, thus the water hammer pressure reduced when it is closed, shock when simultaneously can prevent it from closing between flap and valve seat, and then guarantee the safety of valve and pipe-line system.
Further setting of the present utility model: the joint that described guide holder includes positioning part, guide portion and is arranged between positioning part, guide portion, described positioning part is fixedly connected with valve body, the described axis of guide is located in described guide portion, described positioning seat is arranged on described guide portion, and described spring housing is located on guide portion and two ends and conflicts with flap, joint respectively.
Adopt above-mentioned further setting, the guide seat structure of this structure is simple, easy for installation, and, make the easy for installation of positioning seat, spring.
Setting further more of the present utility model: described piston is arranged on the axis of guide the is provided with flap one end the other end relative to it, and described piston is fixedly connected with through bolt with the axis of guide.
Adopt and above-mentionedly to arrange further again, the piston of this structure and axis of guide Placement, structure is simple, installs, convenient disassembly.
Of the present utility modelly further to arrange again: described guide portion is provided with positioning boss, described positioning seat to be set on described positioning boss and with positioning boss screw-thread fit.
Adopt and above-mentionedly further to arrange again, the positioning seat of this structure and guide holder Placement, structure is simple, installs, convenient disassembly.
Accompanying drawing explanation
Structural representation when Fig. 1 is the utility model specific embodiment valve open;
Structural representation when Fig. 2 is the utility model specific embodiment valve closing;
Fig. 3 is I part partial enlarged drawing in Fig. 1.
Embodiment
As Figure 1-3, a kind of axial flow is without shock buffer valve, include valve body 1, described valve body 1 is provided with medium runner 11, flap 2 is provided with in described medium runner 11, guide holder 3, flap 2 is provided with the axis of guide 4, the described axis of guide 4 is located in guide holder 3, spring 5 is provided with between described flap 2 and guide holder 3, the valve seat 6 matched with flap 2 is provided with in described medium runner 11, valve seat 6 and valve body 1 are wholely set, valve seat 6 and the flap 2 i.e. valve seat 6 that matches can be formed when conflicting with flap 2 and seals, the described axis of guide 4 is provided with piston 7, piston 7 and the axis of guide 4 are coaxially arranged, described guide holder 3 is provided with positioning seat 8, piston cavity 81 is provided with in described positioning seat 8, described piston 7 is placed in described piston cavity 81, described piston cavity 81 includes the first cavity 811 axially arranged along the axis of guide 4, second cavity 812, first cavity 811, second cavity 812 is coaxially arranged with the axis of guide 4, the second described cavity 812 is positioned near flap 2 side relative to the first cavity 811, positioning seat 8 is provided with the through hole 82 with the first cavity 811 conducting, the diameter of the first described cavity 811 is greater than the diameter of the second cavity 812.
In the utility model specific embodiment, described guide holder 3 includes positioning part 31, guide portion 32 and be arranged on positioning part 31, joint 33 between guide portion 32, joint 33 is provided with the gap (not shown) that can flow through for medium, described positioning part 31 is fixed with valve body 1 screw thread, the described axis of guide 4 is located in described guide portion 32, described positioning seat 8 is arranged on described guide portion 32, described spring 5 be set on guide portion 32 and two ends respectively with flap 2, joint 33 is conflicted, described piston 7 is arranged on the axis of guide 4 the is provided with flap 2 one end the other end relative to it, described piston 7 is fixedly connected with through bolt 9 with the axis of guide 4, described guide portion 32 is provided with positioning boss 321, described positioning seat 8 to be set on described positioning boss 321 and with positioning boss 321 screw-thread fit.
The working principle of the utility model specific embodiment: when ducted medium forward flows through medium runner 11, the flap 2 of safety check is opened, and medium enters piston cavity 81 by through hole 82, fills up the first cavity 811, second cavity 812, when ducted medium flows counterflow through medium runner 11, flap 2 starts to close under the effect of medium power and spring 5 power, when flap 2 aperture is larger, because piston 7 is in the first cavity 811 of piston cavity 81, gap between piston 7 and the first cavity 811 is larger, therefore, the motion of flap 2 is not substantially by the impact of the first cavity 811 medium, therefore, flap 2 has closing velocity faster, when flap 2 is closed to the less position of aperture, piston 7 has entered in the second cavity 812, now, because the gap between piston 7 and the second cavity 812 is less, in order to close flap 2, the medium in piston cavity 81 in second cavity 812 must be made to be discharged by the gap between piston 7 and the second cavity 812, because gap is less, therefore, discharge medium and need the longer time, therefore, can be slowed down the closing velocity of flap 2, thus the water hammer pressure reduced when it is closed, shock when simultaneously can prevent it from closing between flap 2 and valve seat 6, and then guarantee the safety of valve and pipe-line system.
Claims (3)
1. an axial flow is without shock buffer valve, include valve body, described valve body is provided with medium runner, flap is provided with in described medium runner, guide holder, flap is provided with the axis of guide, the described axis of guide is located in guide holder, spring is provided with between described flap and guide holder, the valve seat matched with flap is provided with in described medium runner, it is characterized in that: the described axis of guide is provided with piston, described guide holder is provided with positioning seat, piston cavity is provided with in described positioning seat, described piston is placed in described piston cavity, described piston cavity includes the first cavity axially arranged along the axis of guide, second cavity, the second described cavity is positioned near flap side relative to the first cavity, positioning seat is provided with the through hole with the first cavity conducting, the diameter of the first described cavity is greater than the diameter of the second cavity, described guide holder includes positioning part, guide portion and be arranged on positioning part, joint between guide portion, described positioning part is fixedly connected with valve body, the described axis of guide is located in described guide portion, described positioning seat is arranged on described guide portion, described spring housing be located on guide portion and two ends respectively with flap, joint is conflicted.
2. axial flow according to claim 1 is without shock buffer valve, it is characterized in that: described piston is arranged on the axis of guide the is provided with flap one end the other end relative to it, and described piston is fixedly connected with through bolt with the axis of guide.
3. axial flow according to claim 1 is without shock buffer valve, it is characterized in that: described guide portion is provided with positioning boss, described positioning seat to be set on described positioning boss and with positioning boss screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340696.8U CN204042090U (en) | 2014-06-24 | 2014-06-24 | A kind of axial flow is without shock buffer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340696.8U CN204042090U (en) | 2014-06-24 | 2014-06-24 | A kind of axial flow is without shock buffer valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042090U true CN204042090U (en) | 2014-12-24 |
Family
ID=52242758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420340696.8U Expired - Lifetime CN204042090U (en) | 2014-06-24 | 2014-06-24 | A kind of axial flow is without shock buffer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042090U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375096A (en) * | 2019-08-27 | 2019-10-25 | 江苏江恒阀业有限公司 | A kind of differential Slow Close Valve of angie type |
| CN112392995A (en) * | 2020-11-27 | 2021-02-23 | 博纳斯威阀门股份有限公司 | Adjustable slow-closing axial flow type check valve |
| CN113653837A (en) * | 2021-09-06 | 2021-11-16 | 刘余 | Assembled forged steel axial flow check valve |
-
2014
- 2014-06-24 CN CN201420340696.8U patent/CN204042090U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375096A (en) * | 2019-08-27 | 2019-10-25 | 江苏江恒阀业有限公司 | A kind of differential Slow Close Valve of angie type |
| CN112392995A (en) * | 2020-11-27 | 2021-02-23 | 博纳斯威阀门股份有限公司 | Adjustable slow-closing axial flow type check valve |
| CN113653837A (en) * | 2021-09-06 | 2021-11-16 | 刘余 | Assembled forged steel axial flow check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |
|
| CX01 | Expiry of patent term |