CN215568209U - Novel broken vacuum check valve - Google Patents
Novel broken vacuum check valve Download PDFInfo
- Publication number
- CN215568209U CN215568209U CN202121839111.3U CN202121839111U CN215568209U CN 215568209 U CN215568209 U CN 215568209U CN 202121839111 U CN202121839111 U CN 202121839111U CN 215568209 U CN215568209 U CN 215568209U
- Authority
- CN
- China
- Prior art keywords
- valve
- cover
- check valve
- valve cover
- check
- 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.)
- Active
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to a novel vacuum breaking check valve, which comprises a valve body and a lower valve cover arranged on the valve body, the valve body is provided with a water inlet channel and a water outlet channel along the radial direction, a valve seat which is integrally formed with the valve body is arranged between the water inlet channel and the water outlet channel, the valve seat is provided with a valve port, the valve seat is provided with a valve plate which is matched with the valve port and used for fluid medium interception, the valve plate is connected with a check valve rod for controlling the valve plate to stop, the lower valve cover is detachably provided with an upper valve cover, an accommodating cavity is formed between the upper valve cover and the lower valve cover, the upper end part of the check valve rod penetrates into the accommodating cavity, an elastic piece for driving the check valve rod to keep a downward sliding trend is arranged between the upper valve cover and the check valve rod, and the upper valve cover is provided with an air inlet device for air to enter the accommodating cavity and the valve body.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a novel vacuum breaking check valve.
Background
The vacuum break valve is a safety valve. The valve is mainly used in a container or a pipeline, when the pipeline or the container generates negative pressure or vacuum gradually rises due to the running or stopping of a system, the valve can be automatically opened to destroy the vacuum effect, so that the pipeline and other equipment cannot be shriveled or dented, and the safety of the equipment is protected. When the system generates negative pressure, the pressure difference between the atmospheric pressure and the system pressure acts on the sealing element to push the vacuum breaker valve sealing element, the sealing surface is opened to introduce the external atmosphere into the system, the system pressure rises to break the negative pressure until the vacuum breaker valve sealing element resets again for sealing, and the external atmosphere does not enter the system.
The check valve is a valve which automatically opens and closes a valve flap by the flow of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve. The check valve is an automatic valve and mainly used for preventing medium from flowing backwards, preventing the pump and a driving motor from reversing and discharging container medium. And the check valve can be divided into a lift check valve, a swing check valve and a butterfly check valve according to the structure.
However, in the use process of the prior valve, the check valve and the vacuum breaker valve are required to be respectively installed on the pipeline, the arrangement mode is large in occupied space, the installation steps are multiple, a plurality of valves are required to be installed by workers, and the construction efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above problems, the present invention provides a novel vacuum-breaking check valve.
In order to realize the technical problem, the utility model adopts a solution of a novel vacuum breaking check valve, which comprises a valve body and a lower valve cover arranged on the valve body, the valve body is provided with a water inlet channel and a water outlet channel along the radial direction, a valve seat which is integrally formed with the valve body is arranged between the water inlet channel and the water outlet channel, the valve seat is provided with a valve port, the valve seat is provided with a valve plate which is matched with the valve port and used for fluid medium interception, the valve plate is connected with a check valve rod for controlling the valve plate to stop, the lower valve cover is detachably provided with an upper valve cover, an accommodating cavity is formed between the upper valve cover and the lower valve cover, the upper end part of the check valve rod penetrates into the accommodating cavity, an elastic piece for driving the check valve rod to keep a downward sliding trend is arranged between the upper valve cover and the check valve rod, and the upper valve cover is provided with an air inlet device for air to enter the accommodating cavity and the valve body.
The further improvement is that: the air inlet device is as follows: the vertical ventilation through hole is vertically arranged on the upper valve cover and communicated with the containing cavity, and the transverse ventilation through hole is transversely arranged on the upper valve cover and communicated with the vertical ventilation through hole.
The further improvement is that: the elastic piece is a compression spring, one end of the compression spring is connected to the upper end part of the check valve rod, and the other end of the compression spring abuts against the lower end part of the upper valve cover.
The further improvement is that: a first sealing element is arranged between the upper valve cover and the elastic element.
The further improvement is that: and a second sealing element is arranged between the lower valve cover and the upper valve cover.
The further improvement is that: and a gasket is arranged between the lower valve cover and the valve body.
The further improvement is that: and a third sealing element is arranged between the valve plate and the valve seat.
By adopting the technical scheme, the utility model has the beneficial effects that: the utility model can play a role in non-return when in normal use, so that the fluid medium can only enter the water outlet channel from the water inlet channel; when appearing the negative pressure in the pipeline, under the effect of outside atmospheric pressure, sealed the pad sinks for during the outside gas at first can enter into and hold the chamber, during the clearance between gaseous rethread valve rod of later outside and the lower valve gap enters into the pipeline, destroys the vacuum in the pipeline, thereby the protection pipeline can not be inhaled flatly.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the embodiment of the utility model when the pipeline is under negative pressure.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings and specific embodiments.
Example (c);
a novel vacuum breaking check valve, which comprises a valve body 1, the lower valve cover 2 arranged on the valve body 1 in a detachable mode is arranged on the valve body 1 through threads, a water inlet channel 3 and a water outlet channel 4 are radially arranged on the valve body 1, a valve seat 5 integrally formed with the valve body 1 is arranged between the water inlet channel 3 and the water outlet channel 4, a valve port 6 is arranged on the valve seat 5, a valve plate 7 matched with the valve port 6 and used for intercepting fluid media is arranged on the valve seat 5, a check valve rod 8 used for controlling the valve plate 7 to intercept is connected to the valve plate 7, an upper valve cover 9 is detachably arranged on the lower valve cover 2 through threads, a containing cavity 10 is formed between the upper valve cover 9 and the lower valve cover 2, the upper end of the check valve rod 8 penetrates into the containing cavity 10, an elastic piece used for driving the valve rod 8 to keep a downward sliding trend is arranged between the upper valve cover 9 and the check valve rod 8, and an air inlet device used for air to enter into the containing cavity 10 and the valve body 1 is arranged on the upper valve cover 9.
In this embodiment, the access device is: a vertical ventilation through hole 11 vertically arranged on the upper valve cover 9 and communicated with the containing cavity 10, and a transverse ventilation through hole 12 transversely arranged on the upper valve cover 9 and communicated with the vertical ventilation through hole 11.
In this embodiment, the elastic member is a compression spring 13, one end of the compression spring 13 is connected to the upper end of the check valve rod 8, and the other end of the compression spring abuts against the lower end of the upper valve cover 9, meanwhile, a sealing gasket 14 is arranged between the upper valve cover 9 and the elastic member, the lower end of the sealing gasket 14 abuts against the compression spring 13, a connecting protrusion 15 is arranged on the lower end face of the sealing gasket 14, the upper end of the compression spring 13 is sleeved on the connecting protrusion 15, so that the sealing gasket 14 can be prevented from deviating during use, and meanwhile, the upper end of the sealing gasket 14 is sealed at the vertical air vent, so that the fluid medium can be prevented from leaking from the vertical air vent 11 and the horizontal air vent 12.
In order to prevent the leakage at the joint of the upper valve cap 9 and the lower valve cap 2, a 0-type sealing ring 16 is arranged between the lower valve cap 2 and the upper valve cap 9.
A gasket 17 is arranged between the lower valve cover 2 and the valve body 1, so that leakage between the lower valve cover 2 and the valve body 1 can be prevented.
A third sealing gasket 18 is arranged between the valve plate 7 and the valve seat 5, the third sealing gasket 18 is clamped at the lower end of the valve plate 7 and can be matched with the valve seat 5 to prevent fluid media from flowing into the water inlet channel 3 from the water outlet channel 4, and meanwhile, the service life of the valve plate 7 can be prolonged.
The working principle is as follows:
in normal use: the valve plays a role in non-return, at the moment, the pressure inside the pipeline is high, and the vertical ventilating through hole 11 is sealed by the sealing gasket 14 to prevent fluid medium from leaking; meanwhile, the check valve rod 8 keeps a downward sliding trend under the action of the compression spring 13, so that the valve plate 7 is driven to seal the valve port 6, and fluid media can only flow from the water inlet channel 3 to the water outlet channel 4.
The valve body 1 is usually screwed with water pipes on both sides, when negative pressure occurs in the pipes due to flow break or water flow reduction: under the action of external air pressure, the sealing gasket 14 sinks, so that external air can firstly enter the accommodating cavity 10, and then enters the pipeline through the gap between the valve rod and the lower valve cover 2, the vacuum degree in the pipeline is damaged, and the pipeline is protected from being deflated; after the pressure inside the pipeline is recovered, the sealing gasket 14 is reset upwards under the action of the compression spring 13, and the vertical air hole is sealed again to prevent the leakage of fluid medium.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (7)
1. The utility model provides a novel broken vacuum check valve, include the valve body, set up in lower valve gap on the valve body, water inlet channel and water outlet channel have radially been seted up to the valve body, water inlet channel with be provided with between the water outlet channel with valve body integrated into one piece's disk seat, the valve port has been seted up on the disk seat, be provided with on the disk seat with the valve port cooperation is used for the valve plate that fluid medium dams, be connected with on the valve plate and be used for control the non return valve rod that the valve plate dams, its characterized in that: the upper valve cover is detachably arranged on the lower valve cover, an accommodating cavity is formed between the upper valve cover and the lower valve cover, the upper end of the check valve rod penetrates into the accommodating cavity, an elastic part used for driving the check valve rod to keep a downward sliding trend is arranged between the upper valve cover and the check valve rod, and an air supply device used for supplying air to the accommodating cavity and the air inlet device in the valve body is arranged on the upper valve cover.
2. The novel vacuum-breaking check valve as claimed in claim 1, wherein: the air inlet device is as follows: the vertical ventilation through hole is vertically arranged on the upper valve cover and communicated with the containing cavity, and the transverse ventilation through hole is transversely arranged on the upper valve cover and communicated with the vertical ventilation through hole.
3. The novel vacuum-breaking check valve as claimed in claim 2, wherein: the elastic piece is a compression spring, one end of the compression spring is connected to the upper end part of the check valve rod, and the other end of the compression spring abuts against the lower end part of the upper valve cover.
4. The novel vacuum-breaking check valve as claimed in claim 3, wherein: a first sealing element is arranged between the upper valve cover and the elastic element.
5. The novel vacuum-breaking check valve as claimed in claim 1, wherein: and a second sealing element is arranged between the lower valve cover and the upper valve cover.
6. The novel vacuum-breaking check valve as claimed in claim 1, wherein: and a gasket is arranged between the lower valve cover and the valve body.
7. The novel vacuum-breaking check valve as claimed in claim 1, wherein: and a third sealing element is arranged between the valve plate and the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839111.3U CN215568209U (en) | 2021-08-06 | 2021-08-06 | Novel broken vacuum check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121839111.3U CN215568209U (en) | 2021-08-06 | 2021-08-06 | Novel broken vacuum check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215568209U true CN215568209U (en) | 2022-01-18 |
Family
ID=79833512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121839111.3U Active CN215568209U (en) | 2021-08-06 | 2021-08-06 | Novel broken vacuum check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215568209U (en) |
-
2021
- 2021-08-06 CN CN202121839111.3U patent/CN215568209U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107387849B (en) | Double-control-chamber double-floating-body exhaust valve | |
| CN215568209U (en) | Novel broken vacuum check valve | |
| WO2022078135A1 (en) | Check valve for low pressure operating conditions | |
| CN108437964B (en) | Air treatment unit assembly for vehicle and four-loop protection valve thereof | |
| CN204403466U (en) | Low pressure check valve | |
| CN201141456Y (en) | Bypass non-return valve of novel safety casing isolation system | |
| CN203730856U (en) | Vacuum-backflow preventive pilot safety valve | |
| CN218582297U (en) | Locking gate valve with pressure relief function | |
| CN208859044U (en) | A kind of pressure-adjusting type solenoid valve with corrosion resistance | |
| CN210623631U (en) | Wear-resistant high-sealing-performance knife gate valve | |
| CN111412127A (en) | Nuclear-grade reciprocating hydraulic diaphragm pump | |
| CN210661437U (en) | High-performance expansion gate valve with inverted sealing function | |
| CN209977283U (en) | Forged isolation type vacuum starting valve | |
| CN210510424U (en) | Gas self-closing valve | |
| CN204114167U (en) | Reduction valve | |
| CN106931205A (en) | A kind of compensated with air device | |
| CN219242791U (en) | Overpressure protection valve | |
| CN206439449U (en) | Check-valves | |
| CN219242793U (en) | Air seal type valve | |
| CN211010046U (en) | Exhaust valve with good sealing performance | |
| CN213088917U (en) | Novel combined assembled sewage treatment valve | |
| CN217228582U (en) | Pure water tank nitrogen sealing system | |
| CN212250418U (en) | Nuclear-grade reciprocating hydraulic diaphragm pump | |
| CN219911889U (en) | High-pressure overflow valve | |
| CN218118613U (en) | Marine double-seal wave-proof valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |