CN105927764B - Check-valves - Google Patents
Check-valves Download PDFInfo
- Publication number
- CN105927764B CN105927764B CN201610410866.9A CN201610410866A CN105927764B CN 105927764 B CN105927764 B CN 105927764B CN 201610410866 A CN201610410866 A CN 201610410866A CN 105927764 B CN105927764 B CN 105927764B
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- Prior art keywords
- valve body
- space
- check
- valve
- gland
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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
- F16K15/00—Check valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses check-valves, the upper lid closed including valve body and by the opening end of valve body, the both sides of valve body are respectively arranged inlet channel and outlet passageway, inlet channel is connected by the first Vertical Channel with the opening end of valve body, stick harness patch component is installed in the first Vertical Channel, one end of stick harness patch component is connected after stretching into the opening end of valve body with valve head, valve head sealing ring is installed below valve head, the second non-return system is formed between valve head and valve head sealing ring, spring is installed between the lower surface of valve head and stick harness patch component, the gasket seal and gland that are sequentially arranged above with ring-type of valve head, the first non-return system is formed between gasket seal and valve head.It is under absolute small value back pressure, the first non-return system is activated, so as to cut off all backflows.When return pressure increases, the second non-return system is closed and keeps its position to cut off all backflows by packing, and then ensures the security in backflow.The present invention is applied to the check-valves of combustion gas or coal gas.
Description
Technical field
The present invention relates to a kind of control valve in combustion gas or coal gas control research field, particularly a kind of check-valves.
Background technology
Check-valves refers to flow in itself by medium and automatic open and close flap, for preventing the valve of medium refluence, also known as
Non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, and its main function is to prevent medium from falling
Flow, prevent pump and drive motor from inverting, and vessel media is released.However, be provided with existing check-valves lever or
Person's chain link, easily occurs mechanical breakdown.In addition, existing check-valves safeguard it is inconvenient, it is necessary to by whole check-valves from pipeline or
Detected and/or safeguarded after being removed on person's circuit.Further, existing check-valves is easily cold in valve inner appearance at work
Condensate, but condensed water is not easy valve inner discharge.
The content of the invention
The purpose of the present invention, it is to provide a kind of check-valves.
The present invention solve its technical problem solution be：Check-valves, including the open valve body in upper end and by valve body
Opening end closing upper lid, in wide at the top and narrow at the bottom bucket-shaped, the both sides of the valve body are respectively arranged air inlet and led to for the opening end of valve body
Road and outlet passageway, the inlet channel are connected by the first Vertical Channel with the opening end of valve body, first Vertical Channel
Stick harness patch component is inside installed, one end of the stick harness patch component stretch into after the opening end of valve body with the opening positioned at valve body
Valve head inside end connects, and is provided with valve head sealing ring below the valve head, second is formed between valve head and valve head sealing ring
Non-return system, be provided with spring between the lower surface of valve head and stick harness patch component, valve head is sequentially arranged above with ring-type
Gasket seal and gland, form the first non-return system between gasket seal and valve head, the gasket seal and gland are by valve body
Opening end is separated into the first space below gasket seal, the second space between gasket seal and gland and position
The 3rd space between gland and upper lid, first space, second space and the 3rd space directly or indirectly connect, institute
Outlet passageway is stated to connect with the 3rd space by the second Vertical Channel.It is under absolute small value back pressure, the first non-return system is swashed
It is living, so as to cut off all backflows.When return pressure increases, the second non-return system is closed and keeps its position by packing
All backflows are cut off, and then ensure the security in backflow.
As the further improvement of above-mentioned technical proposal, steel wire, the steel are arranged between the gasket seal and gland
Silk screen is located in second space.Steel wire is preferably copper bound steel wire, and when check-valves is by excessively stream, copper bound steel wire will hinder
Only gasket seal is pasted onto gland.
As the further improvement of above-mentioned technical proposal, the gasket seal includes the first pad of close valve head and is located at
The second pad above first pad, after the outer of first pad, the second pad and gland is laminated from the bottom up, gland leads to
The outer of first pad and the second pad is pressed in the caulking groove of valve inner by over-pressed box nut.Completely closed when check-valves is in
Position when, the first pad and the second pad can be all attached on the outer round surface of valve head, so avoid its rupture.
As the further improvement of above-mentioned technical proposal, valve seal packing ring is disposed between the upper lid and valve body, on
Lid is arranged on valve body by bolt.In order to facilitate detection, when upper lid is removed, in check-valves all parts be can
Demolition part.This also to remove check-valves to be detected from pipeline or circuit.
As the further improvement of above-mentioned technical proposal, air inlet pressure tap is disposed with the lower wall of the inlet channel,
Air inlet pressure measurement mouth, air inlet pressure tap screw and air inlet pressure measurement sealing gasket, the outlet are installed on the air inlet pressure tap to lead to
Outlet pressure tap is disposed with the lower wall in road, outlet pressure measurement mouth, outlet pressure tap screw are installed on the outlet pressure tap
And outlet pressure measurement sealing gasket.
As the further improvement of above-mentioned technical proposal, the inlet channel is vertical with the first Vertical Channel, the outlet
Passage is vertical with the second Vertical Channel, i.e. inlet channel and outlet passageway is arranged horizontally.Preferably, the center of inlet channel
The center line of line and outlet passageway overlaps.
As the further improvement of above-mentioned technical proposal, the lower end of the stick harness patch component is fixed on by the first nut
In the lower wall of inlet channel, the first nut, cloth between first nut and valve body are disposed with the outside of first nut
Nut seal pad is equipped with, condensed water can be discharged by simply removing the first nut and the first nut.
As the further improvement of above-mentioned technical proposal, first space and second space pass through gasket seal and valve body
Gap connection between cylindrical, the second space and the 3rd space are connected by the through hole in the middle part of gland.
The beneficial effects of the invention are as follows：The present invention is under absolute small value back pressure, first by setting two non-return systems
Non-return system is activated, so as to cut off all backflows.When return pressure increases, the second non-return system is closed and passes through packing
To keep its position to cut off all backflows, and then ensure the security in backflow.There is no lever or chain link, institute in the check valve
So that the generation of mechanical breakdown can be avoided.Therefore, check-valves simply needs to be installed in a horizontal level to ensure normally
Operation.In addition, condensed water can be discharged by simply removing the first nut and the first nut.The present invention is applied to combustion
The check-valves of gas or coal gas.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described.Obviously, described accompanying drawing is the part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art on the premise of not paying creative work, can also obtain other designs according to these accompanying drawings
Scheme and accompanying drawing.
Fig. 1 is the sectional view of the present invention.
Embodiment
Carried out below with reference to the design of embodiment and accompanying drawing to the present invention, concrete structure and caused technique effect clear
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, be previously mentioned in text
All connection/annexations, not singly refer to component and directly connect, and refer to be added deduct by adding according to specific implementation situation
Few couple auxiliary, to form more excellent draw bail.
The open valve body 1 in reference picture 1, check-valves, including upper end and the upper lid 10 for closing the opening end of valve body 1, valve
For the opening end of body 1 in wide at the top and narrow at the bottom bucket-shaped, the both sides of the valve body 1 are respectively arranged inlet channel 2 and outlet passageway 24, described
Inlet channel 2 is connected by the first Vertical Channel 3 with the opening end of valve body 1, and stick harness plug is provided with first Vertical Channel 3
Piece component 4, one end of the stick harness patch component 4 stretch into after the opening end of valve body 1 with the valve inside the opening end of valve body 1
First 5 connection, the lower section of the valve head 5 is provided with valve head sealing ring 18, the second non-return is formed between valve head 5 and valve head sealing ring 18
System, be provided with spring 25 between the lower surface of valve head 5 and stick harness patch component 4, valve head 5 is sequentially arranged above with ring-type
Gasket seal and gland 9, form the first non-return system between gasket seal and valve head 5, the gasket seal and gland 9 is by valve body
1 opening end be separated into the first space below gasket seal, the second space between gasket seal and gland 9 with
And the 3rd space between gland 9 and upper lid 10, first space, second space and the 3rd space are directly or indirectly
Connection, the outlet passageway 24 are connected by the second Vertical Channel 19 with the 3rd space.It is under absolute small value back pressure, first stops
The system of returning is activated, so as to cut off all backflows.When return pressure increases, the second non-return system close and by packing come
Keep its position to cut off all backflows, and then ensure the security in backflow.
When combustion gas enters check-valves from inlet channel 2, gasket seal that combustion gas will can be provided with the valve head 5 of spring 25
Lift, the first space connects with second space, it is allowed to which combustion gas passes sequentially through the first Vertical Channel, first in the degree of admission of minimum
Space, second space, the 3rd space, the second Vertical Channel and outlet passageway pass through check-valves.When most slight back pressure will make
Obtain on the position before gasket seal returns to, so as to prevent any backflow.If back pressure increases again, valve head 5 can be effective
Close, play a part of secondary seal, in this case, check-valves can bear 0.5MPa high back pressure.When check-valves is in
During the position completely closed, two the first pads and the second pad can be all attached on the outer round surface of valve head 5, so avoided
Its rupture.
Preferred embodiment is further used as, steel wire 8, the steel wire are arranged between the gasket seal and gland 9
Net 8 is located in second space.Steel wire 8 is preferably copper bound steel wire, and when check-valves is by excessively stream, copper bound steel wire will hinder
Only gasket seal is pasted onto gland 9.
It is further used as preferred embodiment, the gasket seal is included close to the first pad 6 of valve head 5 and positioned at the
Second pad of the top of one pad 6, after the outer of first pad 6, the second pad 7 and gland 9 is laminated from the bottom up, gland
9 are pressed in the outer of the first pad 6 and the second pad 7 in the caulking groove inside valve body 1 by gland nut 26.When check-valves is in
During the position completely closed, the first pad 6 and the second pad 7 can be all attached on the outer round surface of valve head 5, so avoid it
Rupture.
Preferred embodiment is further used as, valve seal packing ring 11 is disposed between the upper lid 10 and valve body 1, on
Lid 10 is arranged on valve body 1 by bolt.In order to facilitate detection, when upper lid 10 is removed, all parts in check-valves
It is knockdown pieces.This also to remove check-valves to be detected from pipeline or circuit.
Preferred embodiment is further used as, air inlet pressure tap 12, institute are disposed with the lower wall of the inlet channel 2
State and air inlet pressure measurement mouth 13, air inlet pressure tap screw 14 and air inlet pressure measurement sealing gasket 15 are installed on air inlet pressure tap 12, it is described
Outlet pressure tap 20 is disposed with the lower wall of outlet passageway 24, be provided with the outlet pressure tap 20 outlet pressure measurement mouth 21,
Outlet pressure tap screw 22 and outlet pressure measurement sealing gasket 23.
Preferred embodiment is further used as, the inlet channel 2 is vertical with the first Vertical Channel 3, and the outlet leads to
Road 24 is vertical with the second Vertical Channel 19, i.e. inlet channel 2 and outlet passageway 24 is arranged horizontally.Preferably, inlet channel 2
Center line and outlet passageway 24 center line overlap.The use level pipeline of valve body 1 connects, therefore is managed when check-valves is arranged on
When in road, check-valves will be on horizontal plane.Importantly, when installing check-valves, it should keep the horizontal position within ± 3 °
Put.On this position, the first nut and the first nut of bottom vertically downward, will contribute to the discharge of condensed water.In air inlet
A shutoff valve is preferably installed in the import of pipeline and the outlet of outlet pipe, the valve of the position of shutoff valve as close to check-valves
Body 1, in order to detect and repair check-valves.
Preferred embodiment is further used as, the lower end of the stick harness patch component 4 is fixed on by the first nut 16
In the lower wall of inlet channel 2, the outside of first nut 16 is disposed with the first nut 17, first nut 17 and valve body
Nut seal pad 27 is disposed between 1, condensed water can be discharged by simply removing the first nut and the first nut 16.
Be further used as preferred embodiment, first space and second space by gasket seal and valve body 1 outside
Gap connection between circle, the second space and the 3rd space are connected by the through hole at the middle part of gland 9.
Above is the better embodiment of the present invention is illustrated, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent modifications on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (8)
1. check-valves, it is characterised in that：Including the open valve body in upper end and the upper lid for closing the opening end of valve body, the valve
The both sides of body are respectively arranged inlet channel and outlet passageway, and the inlet channel passes through the first Vertical Channel and the opening end of valve body
Connect, stick harness patch component is installed in first Vertical Channel, the spacious of valve body is stretched into one end of the stick harness patch component
Mouth is connected behind end with the valve head inside the opening end of valve body, and valve head sealing ring is provided with below the valve head, valve head
Spring is installed between lower surface and stick harness patch component, the gasket seal and gland that are sequentially arranged above with ring-type of valve head,
The opening end of valve body is separated into the first space below gasket seal, positioned at gasket seal by the gasket seal and gland
Second space between gland and the 3rd space between gland and upper lid, first space, second space and
3rd space is directly or indirectly connected, and the outlet passageway is connected by the second Vertical Channel with the 3rd space.
2. check-valves according to claim 1, it is characterised in that：Steel wire is arranged between the gasket seal and gland,
The steel wire is located in second space.
3. check-valves according to claim 2, it is characterised in that：The gasket seal includes the first pad close to valve head
With the second pad above the first pad, after the outer of first pad, the second pad and gland is laminated from the bottom up,
The outer of first pad and the second pad is pressed in the caulking groove of valve inner by gland by gland nut.
4. according to the check-valves described in claim 1 or 2 or 3, it is characterised in that：Valve body is disposed between the upper lid and valve body
Seal washer, upper lid are arranged on valve body by bolt.
5. check-valves according to claim 1, it is characterised in that：Air inlet survey is disposed with the lower wall of the inlet channel
Press hole, air inlet pressure measurement mouth, air inlet pressure tap screw and air inlet pressure measurement sealing gasket be installed on the air inlet pressure tap, it is described go out
Outlet pressure tap is disposed with the lower wall of gas passage, outlet pressure measurement mouth, outlet pressure tap are installed on the outlet pressure tap
Screw and outlet pressure measurement sealing gasket.
6. according to the check-valves described in claim 1 or 2 or 3, it is characterised in that：The inlet channel hangs down with the first Vertical Channel
Directly, the outlet passageway is vertical with the second Vertical Channel.
7. according to the check-valves described in claim 1 or 2 or 3, it is characterised in that：The lower end of the stick harness patch component passes through
One nut is fixed in the lower wall of inlet channel, and the first nut, first nut are disposed with the outside of first nut
Nut seal pad is disposed between valve body.
8. check-valves according to claim 1 or 2, it is characterised in that：First space and second space pass through sealing
Gap connection between pad and valve body are cylindrical, the second space and the 3rd space are connected by the through hole in the middle part of gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410866.9A CN105927764B (en) | 2016-06-12 | 2016-06-12 | Check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410866.9A CN105927764B (en) | 2016-06-12 | 2016-06-12 | Check-valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105927764A CN105927764A (en) | 2016-09-07 |
| CN105927764B true CN105927764B (en) | 2018-02-13 |
Family
ID=56833872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410866.9A Active CN105927764B (en) | 2016-06-12 | 2016-06-12 | Check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927764B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386222B1 (en) * | 1997-10-02 | 2002-05-14 | Stant Manufacturing Inc. | Electronic fill limit control |
| CN201059380Y (en) * | 2007-06-14 | 2008-05-14 | 广东长青（集团）股份有限公司 | Gas relief valve |
| CN203297693U (en) * | 2013-05-31 | 2013-11-20 | 袁东日 | One-way valve device |
| CN204756059U (en) * | 2015-07-28 | 2015-11-11 | 宁波万安股份有限公司 | Non return formula gas pressure regulator |
| CN205806577U (en) * | 2016-06-12 | 2016-12-14 | 广州市精鼎电器科技有限公司 | Check-valves |
-
2016
- 2016-06-12 CN CN201610410866.9A patent/CN105927764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386222B1 (en) * | 1997-10-02 | 2002-05-14 | Stant Manufacturing Inc. | Electronic fill limit control |
| CN201059380Y (en) * | 2007-06-14 | 2008-05-14 | 广东长青（集团）股份有限公司 | Gas relief valve |
| CN203297693U (en) * | 2013-05-31 | 2013-11-20 | 袁东日 | One-way valve device |
| CN204756059U (en) * | 2015-07-28 | 2015-11-11 | 宁波万安股份有限公司 | Non return formula gas pressure regulator |
| CN205806577U (en) * | 2016-06-12 | 2016-12-14 | 广州市精鼎电器科技有限公司 | Check-valves |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105927764A (en) | 2016-09-07 |
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