CN104633146B - A kind of piston type pressure release sealing device - Google Patents
A kind of piston type pressure release sealing device Download PDFInfo
- Publication number
- CN104633146B CN104633146B CN201510069690.0A CN201510069690A CN104633146B CN 104633146 B CN104633146 B CN 104633146B CN 201510069690 A CN201510069690 A CN 201510069690A CN 104633146 B CN104633146 B CN 104633146B
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- CN
- China
- Prior art keywords
- valve shaft
- pallet
- pressure release
- piston type
- sealing device
- 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.)
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Classifications
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- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- 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
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- 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
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of piston type pressure release sealing device, including pallet, the relief hole running through disk body it is additionally provided with on described pallet, described pallet is arranged on valve shaft and can be along the axial-movement of valve shaft, gas pressure relief slot is offered on described valve shaft, it has been disposed adjacently sealing ring with described gas pressure relief slot, realize sealing or opening by adjusting the position relationship between described pallet and valve shaft, i.e. sealing ring is higher than realizing during relief hole position sealing, otherwise then realizing open state, the flowing after fluid is communicated with gas pressure relief slot by relief hole realizes pressure release simultaneously.The present invention can realize the classification of convection cell and seals or open, and reduces the moment of torsion caused owing to pressure is high big when opening, and reduces the overall jitter that the impact of accessory is caused by high-pressure fluid simultaneously；The water hammer alleviating pressure fusion during closedown and the formed damage to spare and accessory parts.
Description
Technical field
The present invention relates to a kind of fire-fighting equipment, particularly relate to a kind of piston type pressure release sealing device.
Background technology
At present, cut-off class fluid control device have open or close in the case of pressure time moment of torsion big, phase
Corresponding accessory desired strength is high, adds design and production cost；Meanwhile, process is being opened or closed
In due to fluid circulation latus rectum change, make fluid to control device related accessory impact drastically change,
Shake is occurred even to destroy to making control device.Such as in our daily life, sometimes open the fire hose
During head, the instantaneous water tap opened due to hydraulic pressure height can send ear-piercing sound and slight shake.
Summary of the invention
It is an object of the invention to solve above-mentioned technical problem and a kind of piston type pressure release sealing device is provided.
For achieving the above object, the technical scheme that the present invention carries is:
A kind of piston type pressure release sealing device, including pallet, described pallet is additionally provided with and runs through disk body
Relief hole, described pallet is arranged on valve shaft and can offer on described valve shaft along the axial-movement of valve shaft
Gas pressure relief slot, has been disposed adjacently sealing ring with described gas pressure relief slot, by adjusting between described pallet and valve shaft
Position relationship realize seal or open, i.e. sealing ring higher than relief hole position time realize seal, otherwise then
Realizing open state, the flowing after fluid is communicated with gas pressure relief slot by relief hole simultaneously realizes pressure release.
Preferred as one, described pallet is provided with platen by screw, described platen be provided with for
Location and compressing seal the indent of offset plate.
Preferred as one, the lower section being positioned at described pallet is provided with locknut, and described locknut is fixedly mounted
On valve shaft.
Preferred as one, the axis of described relief hole has angle with the axis of valve shaft.
Preferred as one, also include being easy to turn the rotation screw rod mother that valve shaft rotates, described rotation screw rod
Mother is arranged on valve shaft the one end away from pallet.
Preferred as one, also include valve seat, described valve seat is for connecting with it when sealing offset plate and moving
Touch and form sealed section.
The present invention can realize the classification of convection cell and seals or open, and reduces and cause owing to pressure is high when opening
Moment of torsion big, reduce the overall jitter that the impact of accessory is caused by high-pressure fluid simultaneously；Alleviate during closedown
Pressure fusion and the damage to spare and accessory parts of the water hammer that formed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment；
Fig. 2 is the structural representation that the present embodiment is applied under fire hydrant sealing state；
Fig. 3 is the structural representation that the present embodiment is applied under fire hydrant pressure release state；
Fig. 4 is the structural representation that the present embodiment is applied under fire hydrant full-gear.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features and the advantage of the present invention are further described, but this
Bright it is not limited to listed embodiment.
Referring to Fig. 1-4, a kind of piston type pressure release sealing device, including pallet 3, on described pallet 3
Being additionally provided with the relief hole 4 running through disk body, described pallet 3 is arranged on valve shaft 8 and can be along valve shaft 8
Axial-movement, described valve shaft 8 offers gas pressure relief slot, has been disposed adjacently sealing ring with described gas pressure relief slot
6, realize sealing or opening by adjusting the position relationship between described pallet 3 and valve shaft 8, i.e. seal
Circle 6 is higher than realizing during relief hole 4 position sealing, otherwise then realizes open state, and fluid passes through pressure release simultaneously
Flowing after hole 4 communicates with gas pressure relief slot realizes pressure release.By screw 7, platen is installed on described pallet 3
1, described platen 1 is provided with the indent sealing offset plate 2 for location and compressing.
The lower section being positioned at described pallet 3 is provided with locknut 5, and described locknut 5 is fixedly mounted in valve shaft 8
On.The axis of described relief hole 4 has angle with the axis of valve shaft 8.Also include being easy to turn valve shaft 8
The rotation screw rod mother 11 rotated, described rotation screw rod mother 11 is arranged on valve shaft 8 away from pallet 3
End.Also including valve seat 10, described valve seat 10 is for contacting formation when sealing offset plate 2 and moving
Sealed section.
Referring to the drawings 2-4, is described further the application on fire hydrant of the art scheme of the present embodiment:
Pallet 3 can do the most axially displacement on valve shaft 8, and locknut 5 is fixed on valve shaft 8；Fire hydrant is close
During envelope as shown in Figure 2.When opening, rotate screw rod mother 11, drive valve shaft 8 and locknut 5 to move down,
The most under the pressure of fluid, pallet 3 and sealing offset plate 2 and valve seat 10 remain sealing, due to lock
The bearing area of mother 5 and valve shaft 8 is little, so open torque is the least, when sealing ring 6 is less than relief hole 4
During upper port, fluid is by the gas pressure relief slot on relief hole 4, pallet 3 and the gap of valve shaft 8 and valve shaft 8
Partial pressure on one side is released, reduces the impact to each part of the high-pressure flow medium, decrease shake
(as shown in Figure 3)；Continuing to open, valve shaft 8 promotes pallet 3 and assembly to standard-sized sheet (as shown in Figure 4).
Rotating screw rod mother 11 during closedown, drive valve shaft 8 and sealing device to move up, when sealing, offset plate 2 is close
During valve seat 10, due to the free displacement of pallet 3, first automatic shutdown seal under the thrust of fluid, this
Time relief hole 4 upper end be positioned at the top (as shown in Figure 2) of sealing ring 6, fluid continues through relief hole
4 flowings so that pallet 3 pressure at both sides will not drastically change；Continue to close to locknut 5 to completely attach to and hold in the palm
Dish 3 (shown in institute Fig. 2).Do not occur due to pressure drastically to change, decrease water hammer, thus subtract
Lack the impact to each parts particularly fire hydrant housing.
The above is only the preferred embodiment of the present invention, it is noted that general for the art
For logical technical staff, under the premise without departing from the principles of the invention, it is also possible to make some improvement and profit
Decorations, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a piston type pressure release sealing device, it is characterised in that include pallet (3), described pallet
(3) being additionally provided with the relief hole (4) running through disk body on, described pallet (3) is arranged on valve shaft (8)
Upper and can be along the axial-movement of valve shaft (8), described valve shaft offers gas pressure relief slot on (8), lets out with described
Indent has been disposed adjacently sealing ring (6), by adjusting between described pallet (3) and valve shaft (8)
Position relationship realize seal or open, i.e. sealing ring (6) higher than relief hole (4) position time realize close
Envelope, on the contrary then realize open state, the flowing after fluid is communicated with gas pressure relief slot by relief hole (4) simultaneously
Realize pressure release.
A kind of piston type pressure release sealing device the most according to claim 1, it is characterised in that institute
State and by screw (7), platen (1) be installed on pallet (3), described platen (1) be provided with for
Location and compressing seal the indent of offset plate (2).
A kind of piston type pressure release sealing device the most according to claim 1, it is characterised in that position
Be provided with locknut (5) in the lower section of described pallet (3), described locknut (5) is fixedly mounted in valve
On axle (8).
A kind of piston type pressure release sealing device the most according to claim 1, it is characterised in that institute
The axis of the axis and valve shaft (8) of stating relief hole (4) has angle.
A kind of piston type pressure release sealing device the most according to claim 1, it is characterised in that also
Including being easy to turn rotation screw rod mother (11) that valve shaft (8) rotates, described rotation screw rod is female (11)
It is arranged on one end away from pallet (3) on valve shaft (8).
A kind of piston type pressure release sealing device the most according to claim 2, it is characterised in that also
Including valve seat (10), described valve seat (10) is for contacting when sealing offset plate (2) and being mobile
Form sealed section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069690.0A CN104633146B (en) | 2015-02-10 | 2015-02-10 | A kind of piston type pressure release sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510069690.0A CN104633146B (en) | 2015-02-10 | 2015-02-10 | A kind of piston type pressure release sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104633146A CN104633146A (en) | 2015-05-20 |
| CN104633146B true CN104633146B (en) | 2016-08-31 |
Family
ID=53212220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510069690.0A Active CN104633146B (en) | 2015-02-10 | 2015-02-10 | A kind of piston type pressure release sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104633146B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207071A (en) * | 2002-01-10 | 2003-07-25 | Toshiba Corp | Control valve |
| CN201428803Y (en) * | 2009-04-23 | 2010-03-24 | 成都凯远流体控制工程有限公司 | Balanced cut-off throttling valve |
| CN201779282U (en) * | 2010-07-05 | 2011-03-30 | 大连船用阀门有限公司 | Valve buffering structure |
| CN104315155A (en) * | 2014-08-27 | 2015-01-28 | 中国船舶重工集团公司第七二五研究所 | Improvement method for internal bypass structure of cut-off valve |
| CN204493755U (en) * | 2015-02-10 | 2015-07-22 | 宁津宝华机械有限公司 | A kind of piston type pressure release seal arrangement |
-
2015
- 2015-02-10 CN CN201510069690.0A patent/CN104633146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207071A (en) * | 2002-01-10 | 2003-07-25 | Toshiba Corp | Control valve |
| CN201428803Y (en) * | 2009-04-23 | 2010-03-24 | 成都凯远流体控制工程有限公司 | Balanced cut-off throttling valve |
| CN201779282U (en) * | 2010-07-05 | 2011-03-30 | 大连船用阀门有限公司 | Valve buffering structure |
| CN104315155A (en) * | 2014-08-27 | 2015-01-28 | 中国船舶重工集团公司第七二五研究所 | Improvement method for internal bypass structure of cut-off valve |
| CN204493755U (en) * | 2015-02-10 | 2015-07-22 | 宁津宝华机械有限公司 | A kind of piston type pressure release seal arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104633146A (en) | 2015-05-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20180205 Address after: 253400 Taishan Road, Ningjin County, Shandong Province, No. 18 Patentee after: Ningjin Meihua Industrial Co., Ltd. Address before: No. 18, Taishan Road, Ningjin County, Shandong, Shandong Province, Dezhou Patentee before: NINGJIN BAOHUA MACHINERY CO., LTD. |
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| TR01 | Transfer of patent right |