CN107202184B - Piston type swing check valve - Google Patents
Piston type swing check valve Download PDFInfo
- Publication number
- CN107202184B CN107202184B CN201710569766.5A CN201710569766A CN107202184B CN 107202184 B CN107202184 B CN 107202184B CN 201710569766 A CN201710569766 A CN 201710569766A CN 107202184 B CN107202184 B CN 107202184B
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- CN
- China
- Prior art keywords
- cover assembly
- valve cover
- inlet pipe
- valve
- suspension bracket
- 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
-
- 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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
Abstract
The invention discloses a piston type swing check valve, which comprises a shell, a valve cover assembly and a suspension bracket, wherein an inlet pipe and an outlet pipe are respectively arranged at two ends of the shell, and an assembly hole is arranged between the inlet pipe and the outlet pipe; the end of the inlet pipe is provided with a valve seat, the right end of the valve seat is provided with a valve cover assembly, the valve cover assembly is provided with a radial sealing surface, the radial sealing surface is attached to the end surface of the inlet pipe during sealing, the valve seat is provided with a circular groove around the inlet pipe, the valve cover assembly is provided with a circular convex ring matched with the circular groove, the upper end of the valve cover assembly is connected with a suspension bracket through a movable pin shaft, and the suspension bracket is fixed on the shell; the movable pin shaft is positioned in the long-strip hanging hole and perpendicular to the long-strip hanging hole, and can move along the length direction of the long-strip hanging hole. The invention increases the end face soft seal on the basis of the radial seal of the traditional swing check valve, and improves the sealing effect.
Description
Technical Field
The invention relates to a check valve, in particular to a piston type swing check valve.
Background
Currently, check valves used in fluid pipelines mainly comprise lifting type check valves, swing type check valves, piston type check valves and the like, but the check valves have leakage problems to different degrees. To address this problem, there are some relying on spring pressure to eliminate leakage, but this approach certainly increases flow resistance.
Disclosure of Invention
In order to overcome the defects, the invention provides a piston type swing check valve, and an end face soft seal is added on the basis of radial seal of the swing check valve, so far, the structure has not been found. In order to ensure the centering of the end face soft sealing circular convex ring, the hanging structure of the valve cover assembly is different from the hanging structure of the traditional swing check valve, and the hanging movable pin shaft of the valve cover assembly can axially move so as to ensure the axial movement of the circular convex ring.
The invention is realized by adopting the following technical scheme:
the piston type swing check valve comprises a shell, a valve cover assembly and a suspension bracket, wherein an inlet pipe and an outlet pipe are respectively arranged at two ends of the shell, and an assembly hole is formed between the inlet pipe and the outlet pipe; the end of the inlet pipe is provided with a valve seat, the right end of the valve seat is provided with a valve cover assembly, the valve cover assembly is provided with a radial sealing surface, the radial sealing surface is attached to the end surface of the inlet pipe during sealing, the valve seat is provided with a circular groove around the inlet pipe, the valve cover assembly is provided with a circular convex ring matched with the circular groove, and a sealing ring is arranged in the circular groove; the upper end of the valve cover assembly is connected with a suspension bracket through a movable pin shaft, and the suspension bracket is fixed on the shell; the movable pin shaft is arranged in the long-strip hanging hole and is perpendicular to the long-strip hanging hole, the movable pin shaft can move along the length direction of the long-strip hanging hole, and the movement distance is greater than the depth of the circular convex ring entering the circular groove.
The mounting flange is arranged above the assembly hole, the blind flange is arranged above the mounting flange, and the sealing gasket is arranged between the mounting flange and the blind flange.
An anti-reversion slide block is arranged below the suspension bracket and is positioned at the left side of the valve cover assembly.
The outlet pipe is a conical pipe.
The invention has the advantages and beneficial effects that:
1. the invention increases the end face soft seal on the basis of the radial seal of the traditional swing check valve, and improves the sealing effect.
2. The piston type swing check valve is simple in structural design and practical in function.
Drawings
Fig. 1 is a schematic structural view of a piston type swing check valve.
In the figure: 1. casing 2, inlet pipe 3, suspension bracket 5, movable pin 6, outlet pipe 9, assembly hole 10, long suspension hole 11, radial sealing surface 19, valve cover assembly 21, sealing ring 22, valve seat 23, anti-reverse slider 24, mounting flange 25, sealing pad 26, blind flange
Detailed Description
The piston type swing check valve comprises a shell 1, a valve cover assembly 19 and a suspension bracket 3, wherein an inlet pipe 2 and an outlet pipe 6 are respectively arranged at two ends of the shell 1, an assembly hole 9 is arranged between the inlet pipe 2 and the outlet pipe 6, an installation flange 24 is arranged above the assembly hole 9, a blind flange 26 is arranged above the installation flange 24, and a sealing gasket 25 is arranged between the installation flange 24 and the blind flange 26; the end of the inlet pipe 2 is provided with a valve seat 22, the right end of the valve seat 22 is provided with a valve cover assembly 19, the valve cover assembly 19 is provided with a radial sealing surface 11, the radial sealing surface 11 is attached to the end surface of the inlet pipe 2 during sealing, the valve seat 22 is provided with a circular groove around the inlet pipe, the valve cover assembly 19 is provided with a circular convex ring matched with the circular groove, the circular groove is internally provided with a sealing ring 21, a flexible material with a variable type is arranged in the circular groove, the circular convex ring is embedded into the circular groove during closing, and the circular convex ring compresses the flexible material in the circular groove to form a second seal; the upper end of the valve cover assembly 19 is connected with the suspension bracket 3 through a movable pin shaft 5, the suspension bracket 3 is fixed on the shell 1, a strip suspension hole 10 is arranged in the suspension bracket 3, the movable pin shaft 5 is positioned in the strip suspension hole 10 and is perpendicular to the strip suspension hole 10, the movable pin shaft 5 can move along the length direction of the strip suspension hole 10, and the movement distance is longer than the depth of the circular convex ring entering the circular groove; an anti-reversion slide block 23 is arranged below the suspension bracket 3, the anti-reversion slide block 23 is positioned at the left side of the valve cover assembly 19, the valve cover assembly 19 firstly drops when being closed, then translates, and finally is closed, the anti-reversion slide block 23 can play a role in slow closing, the generation of water hammer is prevented, and the vibration phenomenon in small pressure difference is also prevented;
when the valve cover assembly is in use, fluid enters from the left side, the valve cover assembly 19 is pushed, the movable pin shaft 5 is driven to move from the point a to the point b along the axial direction, the valve cover assembly is started to swing at the point b, and the valve cover assembly 19 stops when the valve cover assembly contacts the outlet pipe 6. When the pressure of the inlet side fluid is reduced and the pressure of the outlet side fluid is high, the valve cover assembly 19 falls to a vertical state, and is pushed by the right side pressure to axially drive the movable pin 5 to move from the point b to the point a; at this time, the circular convex ring enters the circular groove, and soft end face sealing and radial sealing are realized under the back pressure of the outlet side pressure, so that the purpose of no leakage is achieved.
Claims (4)
1. Piston formula swing check valve, including the casing, its characterized in that: the valve cover assembly comprises a valve cover assembly, a valve cover assembly and a suspension bracket, wherein an inlet pipe and an outlet pipe are respectively arranged at two ends of the shell, and an assembly hole is formed between the inlet pipe and the outlet pipe; the end of the inlet pipe is provided with a valve seat, the right end of the valve seat is provided with a valve cover assembly, the valve cover assembly is provided with a radial sealing surface, and the radial sealing surface is attached to the end surface of the inlet pipe during sealing; the valve seat is provided with a circular groove around the inlet pipe, the valve cover assembly is provided with a circular convex ring matched with the circular groove, and a sealing ring is arranged in the circular groove; the upper end of the valve cover assembly is connected with a suspension bracket through a movable pin shaft, and the suspension bracket is fixed on the shell; the movable pin shaft is arranged in the long-strip hanging hole and is perpendicular to the long-strip hanging hole, the movable pin shaft can move along the length direction of the long-strip hanging hole, and the movement distance is greater than the depth of the circular convex ring entering the circular groove.
2. The piston type swing check valve according to claim 1, wherein: the mounting flange is arranged above the assembly hole, the blind flange is arranged above the mounting flange, and the sealing gasket is arranged between the mounting flange and the blind flange.
3. The piston type swing check valve according to claim 1, wherein: an anti-reversion slide block is arranged below the suspension bracket and is positioned at the left side of the valve cover assembly.
4. The piston type swing check valve according to claim 1, wherein: the outlet pipe is a conical pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569766.5A CN107202184B (en) | 2017-07-13 | 2017-07-13 | Piston type swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569766.5A CN107202184B (en) | 2017-07-13 | 2017-07-13 | Piston type swing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202184A CN107202184A (en) | 2017-09-26 |
| CN107202184B true CN107202184B (en) | 2023-05-26 |
Family
ID=59910816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569766.5A Active CN107202184B (en) | 2017-07-13 | 2017-07-13 | Piston type swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107202184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311479A (en) * | 2018-01-31 | 2018-07-24 | 倪惠芳 | A kind of aerospace equipment surface dust cleaning apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838547A1 (en) * | 1988-11-14 | 1990-05-17 | Weinhold Karl | Non-return valve |
| CA2548143A1 (en) * | 2005-05-26 | 2006-11-26 | The Viking Corporation | Check valve with an improved clapper and valve seat |
| CN204717065U (en) * | 2015-06-24 | 2015-10-21 | 浙江加能阀门有限公司 | Swing check valve |
| CN204985872U (en) * | 2015-09-17 | 2016-01-20 | 天津市盛亿德阀门有限公司 | Open formula noise -eliminated check valve soon |
| CN205877292U (en) * | 2016-07-12 | 2017-01-11 | 浙江新旭阀业有限公司 | Soft seal swing check valve |
| CN206159560U (en) * | 2016-11-09 | 2017-05-10 | 尚绪河 | Qi shihuan that revolves that structure is succinct closes silence check valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080308159A1 (en) * | 2007-06-15 | 2008-12-18 | Stunkard Gerald A | Top entry swing check valve |
| CN201651437U (en) * | 2010-03-31 | 2010-11-24 | 温州纳川阀门有限公司 | Sealing rotating starting type check valve |
| CN202165649U (en) * | 2011-06-08 | 2012-03-14 | 严云北 | Dual-clamp easily-replaced seat check valve |
| ITVI20110312A1 (en) * | 2011-12-02 | 2013-06-03 | Tyco Valves And Controls Italia S R L | NON-RETURN VALVE WITH QUICK-MAINTENANCE MAINTENANCE |
| CN203009930U (en) * | 2012-12-30 | 2013-06-19 | 江苏理想阀门有限公司 | Internal-pressure self-sealing swing type check valve |
| CN104847930B (en) * | 2015-04-18 | 2017-06-30 | 张新丰 | Water hammer-resistant slow closing swing check valve |
| CN205745471U (en) * | 2016-06-23 | 2016-11-30 | 环球阀门集团有限公司 | Built-in rocking arm swing check valve |
| CN106704648A (en) * | 2017-03-28 | 2017-05-24 | 永嘉县信诚科技服务有限公司 | Swing slow-closure check valve |
| CN207018580U (en) * | 2017-07-13 | 2018-02-16 | 辽宁飞鸿达蒸汽节能设备有限公司 | Check-valves is opened in piston type rotation |
-
2017
- 2017-07-13 CN CN201710569766.5A patent/CN107202184B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838547A1 (en) * | 1988-11-14 | 1990-05-17 | Weinhold Karl | Non-return valve |
| CA2548143A1 (en) * | 2005-05-26 | 2006-11-26 | The Viking Corporation | Check valve with an improved clapper and valve seat |
| CN204717065U (en) * | 2015-06-24 | 2015-10-21 | 浙江加能阀门有限公司 | Swing check valve |
| CN204985872U (en) * | 2015-09-17 | 2016-01-20 | 天津市盛亿德阀门有限公司 | Open formula noise -eliminated check valve soon |
| CN205877292U (en) * | 2016-07-12 | 2017-01-11 | 浙江新旭阀业有限公司 | Soft seal swing check valve |
| CN206159560U (en) * | 2016-11-09 | 2017-05-10 | 尚绪河 | Qi shihuan that revolves that structure is succinct closes silence check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107202184A (en) | 2017-09-26 |
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