CN115585286A - Breather valve case and breather valve - Google Patents
Breather valve case and breather valve Download PDFInfo
- Publication number
- CN115585286A CN115585286A CN202211159789.6A CN202211159789A CN115585286A CN 115585286 A CN115585286 A CN 115585286A CN 202211159789 A CN202211159789 A CN 202211159789A CN 115585286 A CN115585286 A CN 115585286A
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- China
- Prior art keywords
- valve
- diaphragm
- valve disc
- disc
- breather
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
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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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a valve core of a breather valve, and relates to the field of protective valves.A valve rod of the valve core is fixed at the central position of a valve disc, the valve disc is provided with a plurality of connecting holes, and the valve disc is provided with a recoil structure and a buffer groove in an extension way; the lower surface of the valve disc is tightly attached to a diaphragm with a slightly smaller diameter, the center of the diaphragm is fixed with the valve rod, and a plurality of connecting holes are formed in the center of the diaphragm and aligned with the connecting holes of the valve disc; the lower side of the diaphragm is tightly attached to a diaphragm pressing plate with a slightly smaller diameter, the center of the diaphragm pressing plate is fixed with the valve rod, and a plurality of connecting holes are formed and aligned with the diaphragm connecting holes; and the valve disc, the diaphragm and the diaphragm pressing plate are fixed through the connecting holes. The valve core of the breather valve not only meets the sealing requirement of a low set point and a high pressure-bearing working condition, but also ensures the discharge capacity and the service life of the diaphragm of the breather valve on the premise of maintaining the lowest set point of the valve to be 0.1-0.3 or-0.1-0.3 kPag.
Description
Technical Field
The invention belongs to the technical field of protective valves, and particularly relates to a valve core of a breather valve.
Background
The breather valve is a safety accessory used for preventing the storage tank from being broken or shriveled due to exceeding the designed pressure/vacuum, maintaining the storage tank at the normal working pressure, reducing the volatilization of materials in the tank and reducing the environmental pollution. Normally mounted on the top of the tank, the exhalation valve opens to discharge pressure outwardly when the tank pressure exceeds the set pressure of the exhalation valve; when the canister pressure is below the breather valve set vacuum, the suction valve opens to draw air into the canister.
The setting range of the breather valve is 0.1-103.4 kPag and-0.1-48 kPag, and gravity or spring loading is adopted according to the set point. Traditional breather valve case links into an integrated entity valve disc, diaphragm and diaphragm clamp plate through valve rod nut, because only connect in the valve rod department at the valve disc center, the diaphragm clamp plate can't sticis the diaphragm again when the non-sealed side pressurized of valve disc produces the deformation, produces the accumulative pressure between valve disc and the diaphragm and takes out the diaphragm from between disk seat and valve disc, leads to sealed inefficacy serious leakage to appear.
For example, setting the pressure between 0.1 and 1.0kPag, and the outlet pressure is larger than 10 kPag; the vacuum is set to be-0.1 to-1.0 kPag, the pressure of an inhalation valve and a breathing valve with the operation pressure in the tank being more than 10kPag is set to be more than 10kPag, and the vacuum is set to be-0.1 to-1.0 kPag. In the above situation, because the set point of the exhalation or inhalation end is low, the mass is reduced by reducing the thickness of the valve disc to meet the requirement of the low set point, so that the strength of the valve disc is poor, the non-sealing side bears large pressure, the diaphragm pressing plate cannot press the diaphragm, the diaphragm is drawn out from the valve seat and the valve disc by the accumulated pressure between the valve disc and the diaphragm, and the sealing is failed, so that the medium backflow or leakage occurs.
Consequently to the operating mode of low set point high pressure-bearing, the problem frequently appears leaking in traditional breather valve case, can't satisfy the normal use needs.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the valve core of the breather valve is provided, and the problem of leakage of the breather valve with a low set point and a high pressure bearing point is solved.
The technical solution of the invention is as follows:
a valve core of a breather valve comprises a valve disk, a diaphragm and a diaphragm pressing plate which are arranged in sequence, wherein the diameter of the diaphragm pressing plate is smaller than that of the diaphragm; the central positions of the valve disc, the diaphragm and the diaphragm pressure plate are fixed through the valve rod; the valve disc, the diaphragm and the diaphragm pressing plate are connected through connecting pieces, and the number of the connecting pieces is not less than two.
Preferably, the valve disc, the diaphragm and the diaphragm pressing plate are provided with connecting holes, and the connecting piece is used for mechanically connecting the valve disc, the diaphragm and the diaphragm through the connecting holes.
Preferably, the connecting piece can be a bolt, and the valve disc, the diaphragm and the diaphragm pressing plate are fixedly connected through the bolt.
Preferably, the valve disc should have a recoil structure to meet the requirement of 10% overpressure full opening of the breather valve.
Specifically, the edge of one side, facing the diaphragm, of the valve disc is provided with a recoil structure. The height of the recoil structure is not less than 2mm.
Preferably, the valve disc should be equipped with the dashpot, can form the buffering at valve seat position diaphragm and valve disc, and the disk seat causes the impact to the diaphragm when avoiding the valve disc to return the seat, leads to the diaphragm damage.
Specifically, the surface of the valve disc, which is attached to the diaphragm, is provided with an annular buffer groove, the position of the diaphragm, which is not right opposite to the diaphragm pressing plate, is an annular part, and the buffer groove is opposite to the annular part.
Preferably, the included angle between the folded edge of the buffer groove and the bottom surface of the buffer groove is 90-150 degrees.
Preferably, the membrane is made of flexible material. The flexible material comprises rubber, PTFE, FEP or PFA.
Preferably, the valve disc is made of stainless steel or a low-density high-rigidity material; the low-density high-rigidity material comprises aluminum alloy and titanium alloy.
Preferably, the valve disc is provided with a reinforcing rib, or a reinforcing structure is adopted for the valve disc.
Specifically, the valve disc is provided with reinforcing structures such as radial and/or circumferential reinforcing ribs or arch reinforcing structures.
Preferably, the spool set point is in the range of 0.1 to 0.3 or-0.1 to-0.3 kPag, at a minimum.
Further, the valve discs should be stamped or otherwise machined to reduce mass to meet the set point requirement of a minimum of ± 0.1 kPag.
In summary, the present application at least includes the following beneficial technical effects:
(1) The invention ensures that the diaphragm pressing plate is tightly attached to the diaphragm through the connecting holes for fixing the valve disc, the diaphragm and the diaphragm pressing plate, and ensures that the valve core still maintains a sealing state at a low set point and a high pressure bearing.
(2) The valve disc of the invention adopts the design of the buffer groove, thereby ensuring that the valve seat can not impact the diaphragm when returning the seat and prolonging the service life of the diaphragm.
(3) The valve disc of the invention adopts a recoil structure design, and ensures that the breather valve can be fully opened at 10% overpressure.
(4) The valve core of the breather valve adopts a valve disc in a stamping form, so that the minimum requirement of 0.1-0.3 kPag or-0.1-0.3 kPag of a set point can be met.
In conclusion, the valve core of the breather valve disclosed by the invention not only meets the sealing requirement of a low set point and a high pressure-bearing working condition, but also ensures the discharge capacity of the breather valve and the service life of the diaphragm on the premise of maintaining the lowest set point of the valve to be 0.1-0.3 or-0.1-0.3 kPag.
Drawings
FIG. 1 is a schematic structural diagram of a valve core of a breather valve in an embodiment of the invention;
FIG. 2 is a schematic view of a portion of the enlarged structure at A of FIG. 1;
FIG. 3 is an exploded view of the valve cartridge of FIG. 1;
FIG. 4 is a schematic diagram of a single exhalation valve with particular application of the valve cartridge in the combing process according to the present invention;
FIG. 5 is a schematic view of a single suction valve;
fig. 6 is a schematic view of a breather valve.
Reference numerals are as follows: 1. a valve disc; 2. a membrane; 3. a diaphragm pressing plate; 4. a valve stem; 5. a nut; 6. a gasket; 7. a stud; 8. a nut; 9. a gasket; 10. a breather valve spool; 11. a recoil structure; 12. a buffer tank.
Detailed Description
The present application will now be described in further detail with reference to the following figures and specific examples:
the embodiment of the application discloses breather valve case, refer to fig. 1 and 3, include: valve disc 1, diaphragm 2, diaphragm clamp plate 3 and valve rod 4. The valve rod 4 is fixed at the central position of the valve disc 1, and a plurality of connecting holes are formed in the valve disc 1; the lower surface of the valve disc 1 is tightly attached to a diaphragm 2 with a slightly smaller diameter, the center of the diaphragm 2 is fixed with the valve rod 4, and a plurality of connecting holes are formed and aligned with the connecting holes of the valve disc 1; the lower side of the diaphragm 2 is tightly attached to a diaphragm pressing plate 3 with a slightly smaller diameter, the center of the diaphragm pressing plate 3 is fixed with the valve rod 4, and a plurality of connecting holes are formed and aligned with the connecting holes of the diaphragm 2; the valve rod 4 is connected with the valve disc 1, the diaphragm 2 and the diaphragm pressure plate 3 through a nut 5 and a gasket 6 at the tail end. And the valve disc 1, the diaphragm 2 and the diaphragm pressing plate 3 are fixed through the connecting holes by a stud 7, a nut 8 and a washer 9.
As shown in FIG. 2, the valve disc 1 is provided with a recoil structure 11 with a certain height in an extending manner, the recoil structure 11 faces to the sealing side, and the height of the recoil structure 11 is not less than 2mm. When the valve core rises, the recoil structure 11 can reduce the pressure attenuation of the sealing side of the valve core, the whole stress on the sealing side surface of the valve core is increased, and the valve core can rise quickly to meet the purpose of 10% overpressure full opening.
As shown in fig. 2, the valve disc 1 is provided with an annular buffer groove 12, the buffer groove 12 is located on the surface of the valve disc which is attached to the diaphragm 2, the position of the diaphragm 2 which is not directly opposite to the diaphragm pressing plate 3 is an annular part, and the buffer groove 12 is opposite to the annular part. When the valve core is opened, the buffer groove 12 is filled with gas to form a gas blanket, and when the valve core returns to the seat, the gas blanket can relieve the impact of the valve seat on the diaphragm 2, reduce the loss of the diaphragm and prolong the service life.
The working principle of the invention is as follows:
the valve core is in a sealing state: the flexible diaphragm 2 is coated on the sealing surface of the valve seat under the weight action of the valve disc 1, so that the valve is sealed. One side of the flexible membrane 2, which is attached to the sealing surface of the valve seat, is a sealing surface, and the other side is a non-sealing surface.
When the non-sealing side pressure is higher, the valve disc 1 is pressed to deform, but because the diaphragm 2 and the diaphragm pressing plate 3 are fixed with the valve disc 1 through the connecting hole, the diaphragm pressing plate 3 can still cling to the diaphragm 2 along with the deformation of the valve disc 1, the diaphragm 2 is guaranteed not to be drawn out from the valve seat, the leakage problem is avoided, and the sealing requirement of the high-pressure-bearing working condition is met.
Some common examples of applications are presented below:
as shown in fig. 4, a valve seat is provided at the inlet of the housing, the valve core of the breather valve is installed in the housing, the valve core is in contact with the valve seat at the sealing side, a valve cover is installed on the housing, and the valve rod 4 is inserted into the valve cover. For example, the valve core of the invention is selected to set the pressure between 0.1kPag and 1.0kPag, the outlet pressure is more than 10kPag, and the outlet discharge pipeline is used as the exhalation valve. When the inlet pressure is lower than the set pressure, the valve is in a sealing state; when the inlet pressure reaches the set pressure, the valve core lifts the medium and is discharged from the outlet; when the outlet pressure is high, the valve core 10 can avoid the sealing failure caused by the outlet pressure, and avoid the medium backflow.
As shown in fig. 5, a valve seat is provided at the suction port of the housing, the valve element of the breather valve is mounted in the housing so as to be in contact with the valve seat at the sealing side, a valve cover is mounted on the housing, and the valve rod 4 is inserted into the valve cover. For example, a single-suction valve with a vacuum set between-0.1 and-1.0 kPag and an operating pressure in the tank greater than 10kPag should be selected as the valve core of the present invention. When the inlet pressure is higher than the set vacuum, the valve is in a sealing state; when the inlet pressure reaches a set vacuum, the valve core lifts the medium to be sucked from the suction port; when the operation pressure in the tank is high, the valve core 10 can avoid the sealing failure caused by the high pressure in the tank, and avoid the leakage of the medium from the suction inlet.
As shown in fig. 6, the valve element of the breather valve is installed in a housing, a valve seat is provided at a suction port of the housing, a sealing side of the valve element of the breather valve is in contact with the valve seat, a valve cover is installed on the housing, and the valve rod 4 is inserted into the valve cover. For example, a breather valve with vacuum set between-0.1 and-1.0 kPag and pressure set higher than 10kPag can be selected as the valve core of the invention. When the inlet pressure is higher than the set vacuum and lower than the set vacuum, the valve is in a sealing state; when the inlet pressure reaches the set vacuum, the suction-end valve core 10 lifts the medium to be sucked from the suction port; when the inlet pressure reaches the set pressure, the valve core at the exhalation end lifts the medium to be discharged from the outlet; when the operating pressure in the tank is high, the valve core 10 can prevent the valve core at the suction end from sealing failure due to high pressure in the tank, and prevent media from leaking out of the suction port.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A breather valve case which is characterized in that: the valve comprises a valve disc (1), a diaphragm (2) and a diaphragm pressing plate (3) which are arranged in sequence, wherein the diameter of the diaphragm pressing plate (3) is smaller than that of the diaphragm (2);
the center positions of the valve disc (1), the diaphragm (2) and the diaphragm pressing plate (3) are fixed through a valve rod (4);
the valve disc (1), the diaphragm (2) and the diaphragm pressing plate (3) are connected through connecting pieces, and the number of the connecting pieces is not less than two.
2. A respiratory valve cartridge as claimed in claim 1, wherein: the valve disc (1), the diaphragm (2) and the diaphragm pressing plate (3) are provided with connecting holes, and the connecting piece is used for mechanically connecting the valve disc (1), the diaphragm (2) and the diaphragm pressing plate (3) through the connecting holes.
3. A breather valve cartridge according to claim 1, wherein: the connecting pieces are distributed in a centrosymmetric manner by taking the circle center of the valve disc (1) as the center.
4. A respiratory valve cartridge as claimed in claim 1, wherein: the surface that valve disc (1) and diaphragm (2) were laminated is equipped with annular dashpot (12), and the position that diaphragm (2) surpassed diaphragm clamp plate (3) edge is annular portion, and dashpot (12) are relative with annular portion.
5. The breather valve cartridge of claim 4, wherein: the included angle between the folded edge of the buffer groove (12) and the bottom surface of the buffer groove (12) is 90-150 degrees.
6. The respiratory valve cartridge of claim 5, wherein: the depth of the buffer groove is not less than 0.5mm.
7. A breather valve cartridge according to claim 1, wherein: the edge of one side, facing the diaphragm (2), of the valve disc (1) is provided with a recoil structure (11), and the height of the recoil structure (11) is not less than 2mm.
8. A breather valve cartridge according to claim 1, wherein: the membrane (2) is made of flexible material; the flexible material comprises rubber, PTFE, FEP or PFA;
the valve disc (1) is made of stainless steel or a low-density high-rigidity material; the low-density high-rigidity material comprises aluminum alloy and titanium alloy;
the valve disc (1) is provided with a reinforcing rib, or the valve disc (1) adopts a reinforcing structure.
9. A breather valve cartridge according to claim 1, wherein: the minimum valve core set point is in the range of 0.1-0.3 or-0.1-0.3 kPag.
10. A breather valve case which is characterized in that: comprising a valve seat and a breather valve cartridge (10) according to any of claims 1-9, the sealing side of the breather valve cartridge (10) abutting the sealing surface of the valve seat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211159789.6A CN115585286A (en) | 2022-09-22 | 2022-09-22 | Breather valve case and breather valve |
| PCT/CN2023/099362 WO2024060697A1 (en) | 2022-09-22 | 2023-06-09 | Breather valve core and breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211159789.6A CN115585286A (en) | 2022-09-22 | 2022-09-22 | Breather valve case and breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115585286A true CN115585286A (en) | 2023-01-10 |
Family
ID=84778430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211159789.6A Pending CN115585286A (en) | 2022-09-22 | 2022-09-22 | Breather valve case and breather valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115585286A (en) |
| WO (1) | WO2024060697A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060697A1 (en) * | 2022-09-22 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Breather valve core and breather valve |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5048560A (en) * | 1989-12-12 | 1991-09-17 | L&J Engineering Inc. | Sealing valve assembly |
| CA2582631A1 (en) * | 2007-03-16 | 2008-09-16 | Robert C. Rajewski | Tank vent pallet |
| CN103591347B (en) * | 2012-08-13 | 2016-01-27 | 北京航天动力研究所 | A kind of magnetic force type emergency release valve |
| CN204025801U (en) * | 2014-08-22 | 2014-12-17 | 罗浮阀门集团有限公司 | Inhalation valve with heat insulation function |
| CN210531639U (en) * | 2019-05-28 | 2020-05-15 | 普瑞泰格(南京)安全设备有限公司 | Quick opening and closing zero-leakage breather valve sealing structure |
| CN110285245A (en) * | 2019-06-20 | 2019-09-27 | 徐州八方安全设备有限公司 | A kind of breathing valve core |
| CN211117826U (en) * | 2019-12-13 | 2020-07-28 | 罗浮阀门集团有限公司 | Breather valve |
| CN113970005A (en) * | 2021-12-03 | 2022-01-25 | 江苏爵格工业集团有限公司 | Integrated fire-retardant breather valve with replaceable valve seat |
| CN217271912U (en) * | 2022-01-12 | 2022-08-23 | 吴江天吴特种安全阀有限公司 | Air cushion combined type sealed emergency relief valve |
| CN115585286A (en) * | 2022-09-22 | 2023-01-10 | 北京航天石化技术装备工程有限公司 | Breather valve case and breather valve |
-
2022
- 2022-09-22 CN CN202211159789.6A patent/CN115585286A/en active Pending
-
2023
- 2023-06-09 WO PCT/CN2023/099362 patent/WO2024060697A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024060697A1 (en) * | 2022-09-22 | 2024-03-28 | 北京航天石化技术装备工程有限公司 | Breather valve core and breather valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024060697A1 (en) | 2024-03-28 |
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