CN211231731U - Soft and hard composite sealing check valve - Google Patents
Soft and hard composite sealing check valve Download PDFInfo
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- CN211231731U CN211231731U CN201922219046.3U CN201922219046U CN211231731U CN 211231731 U CN211231731 U CN 211231731U CN 201922219046 U CN201922219046 U CN 201922219046U CN 211231731 U CN211231731 U CN 211231731U
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Abstract
The utility model relates to a soft or hard composite seal's check valve, including the valve body that is equipped with water inlet and delivery port, the inside valve clack that is used for opening and close the water inlet that is equipped with of valve body, the edge seal face of valve clack be the valve clack disk seat, and the valve body is the valve body disk seat at the sealed face of water inlet inward flange, and through hard seal face and hard seal face, soft seal face and hard seal face contact each other sealed between valve clack disk seat and the valve body disk seat, the delivery port side of valve clack is connected. The soft and hard composite sealing check valve is simple in structure.
Description
Technical Field
The utility model relates to a soft or hard composite seal's check valve.
Background
The check valve is opened and closed automatically by the force generated by the medium flowing in the pipeline, and belongs to an automatic valve. The check valve is used for a pipeline system and mainly has the functions of preventing media from flowing backwards, preventing the pump and a driving motor thereof from reversing and discharging the media in the container. Check valves may also be used to provide make-up lines to auxiliary systems in which the pressure may rise above the pressure of the primary system.
Check valves allow media flow in only one direction and prevent flow in the opposite direction. The valve is opened and closed by pressure difference, automatically works by water power, and the valve clack is opened under the action of fluid pressure flowing in one direction; when the fluid flows in the reverse direction, the fluid pressure and the spring act on the valve clack to form effective seal with the valve seat, thereby cutting off the flow and playing a role in preventing the medium from flowing backwards.
When the pipeline front end pressure ratio rear end pressure high valve is automatic to be opened, when the pressure high valve of pipeline rear end closes, if the flow of use is unstable, then the check valve will be opened and closed repeatedly, can influence the check valve life-span, influences the check and seals, and the power of opening and shutting can not be adjusted to general check valve.
The valve seat is sealed with the sealing element, metal-to-metal sealing is called hard sealing, metal-to-nonmetal sealing is called soft sealing, the soft sealing is good in sealing effect and can achieve zero leakage, but the soft sealing cannot resist high temperature and high pressure, and the soft sealing is used for sealing the valve at normal temperature. The hard seal is used for sealing a high-temperature high-pressure valve.
The existing sealing mode is hard-hard sealing or soft-hard sealing, and cannot be used at the same time under high temperature and high pressure.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of prior art, the utility model aims to solve the technical problem that a soft or hard composite seal's check valve is provided, not only simple structure, convenient high efficiency moreover.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a soft or hard compound seal's check valve, is including the valve body that is equipped with water inlet and delivery port, and the valve body is inside to be equipped with the valve clack that is used for opening and close the water inlet, and the edge seal face of valve clack is the valve clack disk seat, and the valve body is the valve body disk seat at the sealed face of water inlet inward flange, through hard seal face and hard seal face, soft seal face and hard seal face mutual contact seal between valve clack disk seat and the valve body disk seat, and the delivery port side.
Preferably, the valve body valve seat is a hard sealing surface, the valve clack valve seat is a hard sealing surface, wherein a circle of soft sealing surface is further arranged on the hard sealing surface of the valve clack valve seat, and the hard sealing surface and the soft sealing surface of the valve clack valve seat are in contact sealing with the hard sealing surface of the valve body valve seat during sealing.
Preferably, an inner chamfer is arranged on a hard sealing surface of the valve body valve seat, an outer chamfer is arranged on a hard sealing surface of the valve clack valve seat, the soft sealing surface is located at the root of the outer chamfer, the inner chamfer is in conical contact with the outer chamfer during sealing to realize conical surface sealing, and the soft sealing surface is in planar contact with the hard sealing surface at the periphery of the inner chamfer to realize planar sealing.
Preferably, the valve body is provided with a guide sleeve support, the middle part of the guide sleeve support is screwed with an adjusting ring, the valve clack is in an inverted T shape, a thin shaft on the water outlet side of the valve clack is coaxially inserted into the adjusting ring for guiding, a wide shaft on the water inlet side of the valve clack is used as a sealing surface, the spring is coaxially sleeved into the thin shaft, one end of the spring is abutted to the adjusting ring, and the other end of the spring is abutted to the water outlet side of the sealing surface.
Compared with the prior art, the utility model discloses following beneficial effect has: the soft-hard composite sealing check valve is simple in structure, the valve flap valve seat and the valve body valve seat are sealed in a contact mode through the hard sealing surface and the hard sealing surface, and the soft sealing surface and the hard sealing surface at normal temperature.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic view of the structure of the embodiment of the present invention in which the check valve is opened.
Fig. 2 is a schematic view of the structure of the check valve closed according to the embodiment of the present invention.
Detailed Description
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-2, a soft-hard composite sealed check valve comprises a valve body 3 provided with a water inlet 1 and a water outlet 2, a valve clack 4 for opening and closing the water inlet is arranged inside the valve body, the edge sealing surface of the valve clack is a valve clack valve seat, the sealing surface of the valve body at the inner edge of the water inlet is a valve body valve seat, the valve clack valve seat and the valve body valve seat are in contact sealing with each other through a hard sealing surface 5 and a hard sealing surface, a soft sealing surface 6 and a hard sealing surface, and the water outlet side of the valve cla. The valve flap valve seat and the valve body valve seat are mutually contacted and sealed through the hard sealing surface and the soft sealing surface and the hard sealing surface at normal temperature, and the valve can be sealed through the hard sealing surface and the hard sealing surface under the condition that the nonmetal sealing material completely fails when the soft sealing fails under high temperature and under the conditions of fire and other factors, so that the complete sealing of the valve is kept.
The embodiment of the utility model provides an in, the valve body disk seat is the hard seal face, and the valve clack disk seat is the hard seal face, wherein still is equipped with the soft seal face of round on the hard seal face of valve clack disk seat, and the hard seal face of valve clack disk seat all seals with the hard seal face contact of valve body disk seat with the soft seal face when sealed.
The embodiment of the utility model provides an in, be equipped with interior chamfer on the hard sealed face of valve body disk seat, be equipped with outer chamfer on the hard sealed face of valve clack disk seat, the soft sealed face is located the root of outer chamfer, and interior chamfer and outer chamfer toper contact realize the conical surface sealed during sealed, and the soft sealed face realizes the plane seal with the hard sealed face plane contact of interior chamfer periphery.
The embodiment of the utility model provides an in, be equipped with uide bushing support 7 on the valve body, the middle part screw thread of uide bushing support has connect the adjusting collar 8 soon, and the shape of valve clack is "perpendicular to" shape, leads in the coaxial insertion adjusting collar of the thin axle of its delivery side, and the wide axle of its delivery side is as sealed face, and the thin axle is emboliaed to the spring is coaxial, and one end top of spring is on the adjusting collar, and the other end top is in the delivery side of sealed face. The valve can adapt to the use requirements of different working conditions through the opening and closing force of an adjusting ring in the adjusting valve according to different medium pressures.
In the embodiment of the present invention, as shown in fig. 1, when the medium flows from the inlet end in a predetermined direction, the valve flap is opened by the medium force; when the medium flows back from the outlet end as shown in fig. 2, the valve clack is tightly sealed with the sealing surface of the valve body and closed due to the action of the spring and the medium reverse force, so that the aim of preventing the medium from flowing back is fulfilled. The valve is made of corrosion-resistant stainless steel materials, can be installed on any pipeline, and prevents media from flowing backwards. It has wide application range, and can be used for water, gas, oil, acid, alkali liquor, hydrogen, ammonia, and especially fire-fighting pipeline.
The present invention is not limited to the above preferred embodiments, and any person can obtain other soft and hard composite sealing check valves of various forms under the teaching of the present invention. All the equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.
Claims (4)
1. The utility model provides a soft or hard combined seal's check valve which characterized in that: the water inlet valve comprises a valve body provided with a water inlet and a water outlet, wherein a valve clack used for opening and closing the water inlet is arranged inside the valve body, the edge sealing surface of the valve clack is a valve clack valve seat, the sealing surface of the valve body at the inner edge of the water inlet is a valve body valve seat, the valve clack valve seat and the valve body valve seat are in contact sealing with each other through a hard sealing surface and a soft sealing surface, and the water outlet side of the valve.
2. The soft-hard composite sealed check valve according to claim 1, wherein: the valve body valve seat is a hard sealing surface, the valve clack valve seat is a hard sealing surface, wherein a circle of soft sealing surface is further arranged on the hard sealing surface of the valve clack valve seat, and the hard sealing surface and the soft sealing surface of the valve clack valve seat are in contact sealing with the hard sealing surface of the valve body valve seat during sealing.
3. The soft-hard composite sealed check valve according to claim 2, wherein: an inner chamfer is arranged on a hard sealing surface of the valve body valve seat, an outer chamfer is arranged on a hard sealing surface of the valve clack valve seat, a soft sealing surface is positioned at the root of the outer chamfer, the inner chamfer is in conical contact with the outer chamfer during sealing to realize conical surface sealing, and the soft sealing surface is in plane contact with the hard sealing surface at the periphery of the inner chamfer to realize plane sealing.
4. The soft-hard composite sealed check valve according to claim 1, wherein: the valve body is provided with a guide sleeve support, the middle part of the guide sleeve support is screwed with an adjusting ring, the valve clack is in an inverted T shape, a thin shaft on the water outlet side of the valve clack is coaxially inserted into the adjusting ring for guiding, a wide shaft on the water inlet side of the valve clack is used as a sealing surface, a spring is coaxially sleeved into the thin shaft, one end of the spring is abutted to the adjusting ring, and the other end of the spring is abutted to the water outlet side of the sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922219046.3U CN211231731U (en) | 2019-12-12 | 2019-12-12 | Soft and hard composite sealing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922219046.3U CN211231731U (en) | 2019-12-12 | 2019-12-12 | Soft and hard composite sealing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231731U true CN211231731U (en) | 2020-08-11 |
Family
ID=71923488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922219046.3U Active CN211231731U (en) | 2019-12-12 | 2019-12-12 | Soft and hard composite sealing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211231731U (en) |
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2019
- 2019-12-12 CN CN201922219046.3U patent/CN211231731U/en active Active
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