CN105135005A - Rotary starting type check valve of water hammer prevention mechanism for pipelines - Google Patents
Rotary starting type check valve of water hammer prevention mechanism for pipelines Download PDFInfo
- Publication number
- CN105135005A CN105135005A CN201510497202.6A CN201510497202A CN105135005A CN 105135005 A CN105135005 A CN 105135005A CN 201510497202 A CN201510497202 A CN 201510497202A CN 105135005 A CN105135005 A CN 105135005A
- Authority
- CN
- China
- Prior art keywords
- valve
- boatswain chair
- valve body
- dunnage
- check valve
- 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.)
- Pending
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention relates to a rotary starting type check valve of a water hammer prevention mechanism for pipelines. The rotary starting type check valve comprises a valve body, wherein a valve part and a valve base are mounted in the valve body; the valve part is mounted in the valve body through a swing arm and a lifting plate; the lifting plate is n-shaped, and is mounted in the valve body through a support plate; the support plate is transversely placed in an inner cavity of the valve body, and is fixedly connected with the inner side wall of the valve body; the swing arm is arranged at the lower end of the lifting plate, and is fixed on the lifting plate through a pin shaft; the lower end of the swing arm is fixedly connected with the valve part; and the pin shaft is coated with a compression spring. The rotary starting type check valve has the following advantages: as the internal compression spring is added, preopening force is provided to the valve part when a medium normally flows, the valve is quickly opened, and the flow resistance is reduced; and when the medium flows back, slow closing force is provided to the valve part at the moment of closing the valve part, so that the closing speed is slowed down, the collision force of the valve part to a sealing surface is reduced, the water hammer phenomenon can be effectively prevented, the safe operation of the pipelines is guaranteed, and the service life of the pipelines is prolonged.
Description
Technical field
The present invention relates to a kind of safety check, particularly a kind of pipeline water hammer-resistant mechanism Swing check valve.
Background technique
Safety check is as the term suggests be one way stop peturn valve, and when medium forward flow, flap is opened under fluid pressure action; When medium reverse flow, flap is closed under self gravitation and retrograde fluid pressures, is blocked by passage, prevents equipment after medium refluence damage threshold.As modal water pump water supply system, when system operationally shuts down suddenly for a certain reason, pump internal pressure disappears, the high pressure water be connected with exit of pump will reverse flow waterback pump, if exit of pump is without safety check, high pressure water will reverse flow waterback pump, and water pump vane produces reversing under the impact of high pressure water.Impeller, because bearing the impulsive load of high pressure water, can make impeller or other component occur to loosen or damage time serious.Impeller may be caused when water pump operates again to fly out, cause very large threat to safety in production.
At present, micro-resistance slowly-closed heavy hammer type safety check is used for the safety check be arranged on pipeline, and bearing pin need be stretched out outside valve body by the micro-resistance slowly-closed heavy hammer type safety check in existing commercially use, then mix weight; This structure valve body needs prepared filler letter, and bearing pin place also needs to set up the component such as filler, filler pressing sleeve, hold-down grid, antirotation keys, rocking bar, weight, bolt and nut; Processing, assemble loaded down with trivial details, cost is higher, and the valve of this structure at bearing pin place many outer leak sources, meanwhile, because rocking bar and weight stretch out valve body, this valve can propose higher requirement again to installing space, at the outer High Rotation Speed of valve body, also there is larger potential safety hazard in rocking bar and weight.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of pipeline water hammer-resistant mechanism Swing check valve, effectively can prevent the generation of water hammer.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of pipeline water hammer-resistant mechanism Swing check valve, described Swing check valve comprises a valve body, flap and valve seat are installed in valve body, and the sealing surface of the sealing surface of flap and valve seat forms sealing pair jointly, its innovative point is:
Described flap is arranged in valve body by rocking arm and boatswain chair;
Described boatswain chair is n shape, and boatswain chair is arranged in valve body by dunnage, and described dunnage is horizontally placed in body cavity, and and be fixedly linked between the madial wall of valve body, the lower end of boatswain chair is provided with rocking arm;
Described rocking arm is fixed on boatswain chair by bearing pin, and lower end and the flap of rocking arm are connected to a fixed, and described bearing pin is also set with Compress Spring.
Further, connection between described boatswain chair and dunnage is specially: described dunnage is close to the lower end that boatswain chair is positioned at the madial wall of upper end, after two socket head screws are connected with dunnage after running through boatswain chair from top to bottom, boatswain chair and dunnage are fixed, the two ends of socket head screw have respectively one run through boatswain chair from top to bottom after the position limit pin that is connected with dunnage.
Further, described Compress Spring by be sleeved on bearing pin and be positioned at rocking arm two ends mounting end and be positioned at the upper and lower two ends of mounting end and be connected with mounting end be positioned at conplane upper limit end, lower limit end forms jointly, upper limit end one has two, be connected with two outer ends of two mounting ends respectively, and prop up the two-arm of boatswain chair respectively, lower limit end takes the shape of the letter U shape, and its two ends are connected with the medial extremity of two mounting ends respectively, and prop up the side of rocking arm.
The invention has the advantages that: by setting up built-in Compress Spring, when medium proper flow for flap provides an opening force in advance, valve being opened rapidly, reduces flow resistance simultaneously; When medium flows backwards, provide a Slow Close power in the moment that flap is closed for flap, slow down closing velocity, reduce flap to the impact force of sealing surface, increase sealing surface working life, also effectively can prevent water hammer accordingly, ensure the safe operation of pipeline, lift line working life.
By the setting of the position limit pin at socket head screw two ends, relative movement between boatswain chair and dunnage can well be avoided.
Safety check in the present invention solves the shortcoming that micro-resistance slowly-closed heavy hammer type safety check component are many, assembling bothers, manufacture cost is high, decreases an outer leak source simultaneously, eliminates safe hidden trouble without particular/special requirement, the outer heavy hammer structure of cancellation valve body to installing space.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of pipeline Swing check valve of the present invention.
Fig. 2 is the schematic diagram of pipeline water hammer-resistant mechanism of the present invention Swing check valve.
Embodiment
Schematic diagram is as shown in Figure 1 known, and pipeline Swing check valve of the present invention comprises a valve body 10, be provided with flap 9 and valve seat 12, and the sealing surface of the sealing surface of flap 9 and valve seat 12 forms sealing pair jointly in valve body 10.
Schematic diagram is as shown in Figure 2 known, and flap 9 is arranged in valve body 10 by rocking arm 8 and boatswain chair 4.
Boatswain chair 4 is in n shape, and boatswain chair 4 is arranged in valve body 10 by dunnage 3, and dunnage 3 is horizontally placed in the inner chamber of valve body 10, and is fixedly linked between the madial wall of the two ends of dunnage 3 and valve body 10.
Connection between boatswain chair 4 and dunnage 3 is specially: dunnage 3 is close to the lower end that boatswain chair is positioned at the madial wall of upper end, after two socket head screws 1 run through the upper end of boatswain chair 4 from top to bottom and after being connected with dunnage 3, thus realize being connected and fixed between boatswain chair 4 and dunnage 3, have one at the two ends of socket head screw 1 respectively and run through the rear position limit pin 2 be connected with dunnage 3 of boatswain chair 4 from top to bottom.By the setting of the position limit pin 2 at socket head screw 1 two ends, after can being connected between dunnage 3 with boatswain chair 4, can also well avoid, between boatswain chair 4 and dunnage 3, relative movement occurs.
Rocking arm 8 is positioned at the lower end of boatswain chair 4, and be fixed on boatswain chair 4 by bearing pin 5, it specifically connects: bearing pin 5 is through after a sidewall of boatswain chair 4, again through rocking arm 8, again through another sidewall of boatswain chair 4, thus rocking arm 8 is connected with boatswain chair 4, lower end and the flap 9 of rocking arm 8 are connected to a fixed, and bearing pin 5 is also set with Compress Spring 7.
Compress Spring 7 by be sleeved on bearing pin 5 and be positioned at rocking arm 8 two ends mounting end and be positioned at the upper and lower two ends of mounting end and be connected with mounting end be positioned at conplane upper limit end, lower limit end forms jointly, upper limit end one has two, be connected with two outer ends of two mounting ends respectively, and prop up the two-arm of boatswain chair 4 respectively, lower limit end takes the shape of the letter U shape, its two ends are connected with the medial extremity of two mounting ends respectively, and prop up the side of rocking arm 8.
Working principle of the present invention is: Compress Spring 7 makes to form an opening force in advance when valve closing between boatswain chair 4 and rocking arm 8, can Quick open valve lobe 9 during medium proper flow, reduce flow resistance medium produced from gravity because of flap 9 and rocking arm 8 simultaneously, when medium flows backwards, in the moment that flap 9 is closed, Compress Spring 7 forms a Slow Close power by rocking arm 8 pairs of flaps 9, slows down closing velocity, reduce flap to the impact force of sealing surface, improve sealing surface working life; When the pressure medium simultaneously flowing through valve occurs to fluctuate, Compress Spring 7 can also alleviate the shock range of flap 9, reduces noise when valve runs on pipeline; Meanwhile, the Swing check valve of this structure effectively can prevent the water hammer of pipeline, ensures the safe operation of pipeline, lift line working life.
The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a pipeline water hammer-resistant mechanism Swing check valve, described Swing check valve comprises a valve body, is provided with flap and valve seat in valve body, and the sealing surface of the sealing surface of flap and valve seat forms sealing pair jointly, it is characterized in that:
Described flap is arranged in valve body by rocking arm and boatswain chair;
Described boatswain chair is n shape, and boatswain chair is arranged in valve body by dunnage, and described dunnage is horizontally placed in body cavity, and and be fixedly linked between the madial wall of valve body, the lower end of boatswain chair is provided with rocking arm;
Described rocking arm is fixed on boatswain chair by bearing pin, and lower end and the flap of rocking arm are connected to a fixed, and described bearing pin is also set with Compress Spring.
2. pipeline water hammer-resistant mechanism according to claim 1 Swing check valve, it is characterized in that: the connection between described boatswain chair and dunnage is specially: described dunnage is close to the lower end that boatswain chair is positioned at the madial wall of upper end, after two socket head screws are connected with dunnage after running through boatswain chair from top to bottom, boatswain chair and dunnage are fixed, the two ends of socket head screw have respectively one run through boatswain chair from top to bottom after the position limit pin that is connected with dunnage.
3. pipeline water hammer-resistant mechanism according to claim 1 Swing check valve, it is characterized in that: described Compress Spring by be sleeved on bearing pin and be positioned at rocking arm two ends mounting end and be positioned at the upper and lower two ends of mounting end and be connected with mounting end be positioned at conplane upper limit end, lower limit end forms jointly, upper limit end one has two, be connected with two outer ends of two mounting ends respectively, and prop up the two-arm of boatswain chair respectively, lower limit end takes the shape of the letter U shape, its two ends are connected with the medial extremity of two mounting ends respectively, and prop up the side of rocking arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497202.6A CN105135005A (en) | 2015-08-14 | 2015-08-14 | Rotary starting type check valve of water hammer prevention mechanism for pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510497202.6A CN105135005A (en) | 2015-08-14 | 2015-08-14 | Rotary starting type check valve of water hammer prevention mechanism for pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105135005A true CN105135005A (en) | 2015-12-09 |
Family
ID=54720478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510497202.6A Pending CN105135005A (en) | 2015-08-14 | 2015-08-14 | Rotary starting type check valve of water hammer prevention mechanism for pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105135005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810684A (en) * | 2020-07-17 | 2020-10-23 | 哈电集团哈尔滨电站阀门有限公司 | Low flow resistance slow-closing check valve |
| CN112081966A (en) * | 2020-09-25 | 2020-12-15 | 武芳 | Swing check valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617959A (en) * | 1985-10-04 | 1986-10-21 | Nippondenso Co., Ltd. | Check valve assembly for pipeline system |
| WO1997008481A1 (en) * | 1995-08-29 | 1997-03-06 | Kabushiki Kaisha Yokota Seisakusho | Swing type non-water hammer check valve |
| CN202327251U (en) * | 2011-11-23 | 2012-07-11 | 温州纳川阀门有限公司 | Swing check valve |
| CN203604728U (en) * | 2013-12-03 | 2014-05-21 | 南通市电站阀门有限公司 | Ultra-large-calibre forged steel check valve of main water supply system |
| CN203880156U (en) * | 2014-06-12 | 2014-10-15 | 卢子童 | Check valve capable of eliminating noise and preventing burst |
| CN204533675U (en) * | 2014-12-26 | 2015-08-05 | 大连船用阀门有限公司 | A kind of Swing check valve |
-
2015
- 2015-08-14 CN CN201510497202.6A patent/CN105135005A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617959A (en) * | 1985-10-04 | 1986-10-21 | Nippondenso Co., Ltd. | Check valve assembly for pipeline system |
| WO1997008481A1 (en) * | 1995-08-29 | 1997-03-06 | Kabushiki Kaisha Yokota Seisakusho | Swing type non-water hammer check valve |
| CN202327251U (en) * | 2011-11-23 | 2012-07-11 | 温州纳川阀门有限公司 | Swing check valve |
| CN203604728U (en) * | 2013-12-03 | 2014-05-21 | 南通市电站阀门有限公司 | Ultra-large-calibre forged steel check valve of main water supply system |
| CN203880156U (en) * | 2014-06-12 | 2014-10-15 | 卢子童 | Check valve capable of eliminating noise and preventing burst |
| CN204533675U (en) * | 2014-12-26 | 2015-08-05 | 大连船用阀门有限公司 | A kind of Swing check valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810684A (en) * | 2020-07-17 | 2020-10-23 | 哈电集团哈尔滨电站阀门有限公司 | Low flow resistance slow-closing check valve |
| CN112081966A (en) * | 2020-09-25 | 2020-12-15 | 武芳 | Swing check valve |
| CN112081966B (en) * | 2020-09-25 | 2021-12-17 | 浙江阿尔法阀门有限公司 | Swing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |