CN208519228U - A kind of check valve - Google Patents
A kind of check valve Download PDFInfo
- Publication number
- CN208519228U CN208519228U CN201821047613.0U CN201821047613U CN208519228U CN 208519228 U CN208519228 U CN 208519228U CN 201821047613 U CN201821047613 U CN 201821047613U CN 208519228 U CN208519228 U CN 208519228U
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- valve
- flap
- flow channel
- valve body
- extension tube
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Abstract
The utility model discloses a kind of check valves, belong to valve technology field, including valve body and valve deck, valve body is connected with valve deck by bolt, flow channel and flow pass are equipped in valve body, flow channel end and flow pass end are provided with ring flange, valve shaft is set in valve body, rocking bar is connected on valve shaft, 2 springs are provided on rocking bar, the spring other end is fixedly connected on flow pass, rocking bar connects flap by positioning pin, flap and valve body junction are provided with sealing ring A, flap and flow pass are adapted, the bottom of flow channel is equipped with extension tube attached, extension tube attached is connected to flow channel, extension tube attached bottom end is equipped with lower cover, detent ring is equipped in flow channel, detent ring is clamped filter core, the filter core other end extends into extension tube attached and is fixedly connected with lower cover.The utility model avoids the solid particle polluter in fluid from being gathered on flap, slows down impact of the fluid to flap and flow channel significantly；It is more convenient to simplify pipeline equipment, installation and maintenance.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of check valve.
Background technique
Check-valves refers to be flowed and automatic open and close flap by medium itself, for the valve for preventing medium from flowing backwards, also known as
Non-return valve, check valve and reflux valve.Check-valves belongs to a kind of automatic valve, and main function is to prevent medium from flowing backwards, preventing from pumping
And drive motor reversion and vessel media are released.In general, fluid under pressure opens the flap of check-valves,
And outlet side is flowed to from inlet side.When import lateral pressure is lower than outlet side, effect of the flap in Fluid pressure and gravity itself
Under automatically channel is closed, prevent fluid countercurrent current.However, existing check-valves, when flowing back closing, shock is very big, may
Cause liquid hammer in fluid pipeline, generate noise, even result in the damage of valve parts, some operating conditions have noise requirements or
Medium has particular/special requirement that cannot hit, and existing check-valves cannot use in this case.
Notification number is CN207421410U, and the day for announcing discloses one kind for the Chinese patent literature on May 29th, 2018 and stops
Return valve, which is characterized in that including flap shaft and buffer gear；The buffer gear includes lever and cylinder, and the one of the lever
End is fixedly connected with the flap shaft, and the other end of the lever is equipped with weight；The piston rod of the cylinder and the lever
Hingedly, when the lever is rotated around the flap shaft, the piston rod that the lever is able to drive the cylinder is flexible.
When patent check-valves reflux is closed, flap drives flap shaft to rotate counterclockwise around the axis of flap shaft, thus band
Dynamic lever is rotated counterclockwise around the axis of flap shaft, and in lever rotation, the piston rod for being able to drive cylinder is moved towards cylinder barrel,
Under the action of cylinder and weight, the rotational velocity of flap shaft is reduced, and realizes check-valves slowly closing, is reduced shock and is made an uproar
Sound, but may build up on valve seat in fluid containing solid particle polluter, so that because between spool and valve seat when valve is closed
There is gap and fit badly, not can effectively prevent medium counter flow.
Summary of the invention
The purpose of this utility model is to provide a kind of with the check valve filtered with check function, not only can avoid fluid
In solid particle polluter be gathered on flap and flow channel, slow down impact of the fluid to flap and flow channel significantly, protect
Demonstrate,prove the stability of fluid flowing；And production and installation cost can be reduced, simplify pipeline equipment, installation and maintenance, user
Just.
The purpose of this utility model is achieved through the following technical solutions:
A kind of check valve, including valve body and valve deck, the valve body are connected with valve deck by bolt, and stream is equipped in the valve body
Enter channel and flow pass, the flow channel end and flow pass end are provided with ring flange, it is characterised in that: described
Valve shaft is set in valve body, is connected with rocking bar on the valve shaft, 2 springs are provided on the rocking bar, the spring other end is solid
Surely it is connected on flow pass, the rocking bar connects flap by positioning pin, and the flap and valve body junction are provided with sealing
A is enclosed, the flap and flow pass are adapted, and the bottom of the flow channel is equipped with extension tube attached, and the extension tube attached and inflow are logical
Road connection, the extension tube attached bottom end are equipped with lower cover, detent ring are equipped in the flow channel, and the detent ring is clamped filter core, institute
The filter core other end is stated to extend into extension tube attached and be fixedly connected with lower cover.
Preferably, sealing ring B is equipped at the cooperation of the valve deck and valve body.
Preferably, the lower lid is equipped with mudhole, is equipped with blowdown valve in the mudhole.
Preferably, the ring flange is provided with sealing ring mounting groove and 6 bolts hole.
Preferably, the flow channel, flow pass, flap, rocking bar, valve shaft and lower interior surface carry out at electrodeposited chromium
Reason.
The technical program has the beneficial effect that:
One, check valve provided by the utility model, the valve body is interior to be arranged valve shaft, is connected with rocking bar on the valve shaft, institute
It states and is provided with 2 springs on rocking bar, the spring other end is fixedly connected on flow pass, and the setting of spring is opened in flap
When reduce shock of the rocking bar to flow pass, reduce shock of the flap to flow channel when flap is closed, reduce noise and increasing
Add the service life of check valve；The rocking bar connects flap by positioning pin, and the flap and valve body junction are provided with sealing
A is enclosed, sealing ring A uses rubber seal, and the setting of sealing ring A strengthens the leakproofness at flap, effectively prevent medium counter flow；
The flap and flow pass are adapted, and the bottom of the flow channel is equipped with extension tube attached, and the extension tube attached and flow channel connect
Logical, the extension tube attached bottom end is equipped with lower cover, and detent ring is equipped in the flow channel, and the detent ring is clamped filter core, the filter
The core other end extends into extension tube attached and is fixedly connected with lower cover, and the setting of filter core is reduced in fluid to be assembled containing solid particle polluter
On flap, so that the phenomenon that flap fits badly when closing because there is gap between flap and flow channel, detent ring
The installation for facilitating filter core, the presence of detent ring are set, and liquid is difficult to start filter core when flowing, and guarantees the effect of filtering.
Two, sealing ring B is equipped at the cooperation of check valve provided by the utility model, valve deck and valve body, sealing ring B uses rubber
Glue sealing ring, the setting of sealing ring B increase the leakproofness of valve body and valve deck, effectively reduce the generation of fluid seepage phenomenon.
Three, check valve provided by the utility model, lower lid are equipped with mudhole, are equipped with blowdown valve, day in the mudhole
Blowdown valve is opened to the blowdown that can be realized in filter core when being often used, reduces the work of disassembly lower cover, using more convenient.
Four, check valve provided by the utility model, ring flange are provided with sealing ring mounting groove and 6 bolts hole, ring flange
Upper 6 bolts hole are uniformly distributed, and sealing ring position when sealing ring mounting groove facilitates pipeline to connect is arranged on ring flange and fixes, prevents
Pipeline is because of pipeline water clock caused by sealing ring malposition.
Five, check valve provided by the utility model, table in flow channel, flow pass, flap, rocking bar, valve shaft and lower cover
Face carries out electrodeposited chromium processing, improve flow channel, flow pass, flap, rocking bar, valve shaft and lower interior surface finish and
Corrosion resistance, reduction impurity form stifled in the accumulation of flow channel, flow pass, flap, rocking bar, valve shaft and lower interior surface
Plug reduces the corrosion of flow channel, flow pass, flap, rocking bar, valve shaft and lower interior surface to enhance the use of check valve
Service life.
Detailed description of the invention
The utility model aforementioned and being detailed description below becomes more apparent upon when reading in conjunction with the following drawings, in attached drawing:
Fig. 1 is the sectional side elevation of the utility model；
Fig. 2 is the structural schematic diagram of the utility model ring flange；
In figure:
1, valve body；2, valve deck；3, flow channel；4, flow pass；5, ring flange；6, valve shaft；7, rocking bar；8, spring；9,
Flap；10, sealing ring A；11, extension tube attached；12, lower cover；13, filter core；14, sealing ring B；15, mudhole；16, sealing ring is installed
Slot；17, bolt hole.
Specific embodiment
It is further illustrated below by several specific embodiments and realizes the utility model aim technical solution, needed
Bright, the technical solution of the requires of the utility model protection includes but is not limited to following embodiment.
Embodiment 1
As a kind of most basic embodiment of the utility model, present embodiment discloses a kind of check valves, such as Fig. 1 institute
Show, including valve body 1 and valve deck 2, the valve body 1 is connected with valve deck 2 by bolt, is equipped with flow channel 3 and stream in the valve body 1
Channel 4 out, 3 end of flow channel and 4 end of flow pass are provided with ring flange 5, and valve shaft 6 is arranged in the valve body 1,
It is connected with rocking bar 7 on the valve shaft 6,2 springs 8 are provided on the rocking bar 7,8 other end of spring is fixedly connected on stream
Out on channel 4, the rocking bar 7 connects flap 9 by positioning pin, and the flap 9 and 1 junction of valve body are provided with sealing ring A10,
The flap 9 and flow pass 4 are adapted, and the bottom of the flow channel 3 is equipped with extension tube attached 11, the extension tube attached 11 and inflow
Channel 3 is connected to, and 11 bottom end of extension tube attached is equipped with lower cover 12, and detent ring, the detent ring clamping are equipped in the flow channel 3
Filter core 13, the filter core 13 using using stainless steel filter core, 13 other end of filter core extend into extension tube attached 11 and with lower cover 12
It is fixedly connected.
Check valve provided by the utility model, the valve body 1 is interior to be arranged valve shaft 6, is connected with rocking bar 7, institute on the valve shaft 6
It states and is provided with 2 springs 8 on rocking bar 7,8 other end of spring is fixedly connected on flow pass 4, and the setting of spring 8 is in valve
Reduce shock of the rocking bar 7 to flow pass 4 when valve 9 is opened, reduce shock of the flap 9 to flow channel 3 when flap 9 is closed,
It reduces noise and increases the service life of check valve；The rocking bar 7 connects flap 9, the flap 9 and valve body 1 by positioning pin
Junction is provided with sealing ring A10, and sealing ring A10 uses rubber seal, and the setting of sealing ring A10 strengthens at flap 9
Leakproofness effectively prevent medium counter flow；The flap 9 and flow pass 4 are adapted, and the bottom of the flow channel 3 is equipped with outer
Adapter tube 11, the extension tube attached 11 are connected to flow channel 3, and 11 bottom end of extension tube attached is equipped with lower cover 12, in the flow channel 3
Equipped with detent ring, the detent ring is clamped filter core 13, and 13 other end of filter core extends into extension tube attached 11 and fixes with lower cover 12
Connection, the setting of filter core 13 is reduced in fluid to be gathered on flap 9 containing solid particle polluter, so that because of valve when flap 9 is closed
The phenomenon that having gap between valve 9 and flow channel 3 and fitting badly, the setting of detent ring facilitates the installation of filter core 13, detent
The presence of ring, liquid flowing are difficult to start filter core 13, guarantee the effect of filtering.
Embodiment 2
As a kind of preferred embodiment of the utility model, present embodiment discloses a kind of check valves, as shown in Figure 1,
Including valve body 1 and valve deck 2, the valve body 1 is connected with valve deck 2 by bolt, is equipped with flow channel 3 and outflow in the valve body 1
Channel 4,3 end of flow channel and 4 end of flow pass are provided with ring flange 5, and valve shaft 6, institute is arranged in the valve body 1
It states and is connected with rocking bar 7 on valve shaft 6,2 springs 8 are provided on the rocking bar 7,8 other end of spring is fixedly connected on outflow
On channel 4, the rocking bar 7 connects flap 9 by positioning pin, and the flap 9 and 1 junction of valve body are provided with sealing ring A10, institute
It states flap 9 and flow pass 4 is adapted, the bottom of the flow channel 3 is equipped with extension tube attached 11, and the extension tube attached 11 and inflow are logical
Road 3 is connected to, and 11 bottom end of extension tube attached is equipped with lower cover 12, and detent ring, the detent ring clamping filter are equipped in the flow channel 3
Core 13, using stainless steel filter core is used, 13 other end of filter core extends into extension tube attached 11 and consolidates with lower cover 12 filter core 13
Fixed connection.
Preferably, sealing ring B14 is equipped at the cooperation of the valve deck 2 and valve body 1.
Preferably, the lower cover 12 is equipped with mudhole 15, is equipped with blowdown valve in the mudhole 15.
As shown in Figure 2, it is preferred that the ring flange 5 is provided with sealing ring mounting groove 16 and 6 bolt hole 17.
Preferably, the flow channel 3, flow pass 4, flap 9, rocking bar 7, valve shaft 6 and 12 inner surface of lower cover carry out
Electrodeposited chromium processing.
Check valve provided by the utility model, the valve body 1 is interior to be arranged valve shaft 6, is connected with rocking bar 7, institute on the valve shaft 6
It states and is provided with 2 springs 8 on rocking bar 7,8 other end of spring is fixedly connected on flow pass 4, and the setting of spring 8 is in valve
Reduce shock of the rocking bar 7 to flow pass 4 when valve 9 is opened, reduce shock of the flap 9 to flow channel 3 when flap 9 is closed,
It reduces noise and increases the service life of check valve；The rocking bar 7 connects flap 9, the flap 9 and valve body 1 by positioning pin
Junction is provided with sealing ring A10, and sealing ring A10 uses rubber seal, and the setting of sealing ring A10 strengthens at flap 9
Leakproofness effectively prevent medium counter flow；The flap 9 and flow pass 4 are adapted, and the bottom of the flow channel 3 is equipped with outer
Adapter tube 11, the extension tube attached 11 are connected to flow channel 3, and 11 bottom end of extension tube attached is equipped with lower cover 12, in the flow channel 3
Equipped with detent ring, the detent ring is clamped filter core 13, and 13 other end of filter core extends into extension tube attached 11 and fixes with lower cover 12
Connection, the setting of filter core 13 is reduced in fluid to be gathered on flap 9 containing solid particle polluter, so that because of valve when flap 9 is closed
The phenomenon that having gap between valve 9 and flow channel 3 and fitting badly, the setting of detent ring facilitates the installation of filter core 13, detent
The presence of ring, liquid flowing are difficult to start filter core 13, guarantee the effect of filtering.
Sealing ring B14 is equipped at the cooperation of valve deck 2 and valve body 1, sealing ring B14 uses rubber seal, sealing ring B14's
The leakproofness for increasing valve body 1 and valve deck 2 is set, the generation of fluid seepage phenomenon is effectively reduced.Lower cover 12 is equipped with mudhole 15,
It is equipped with blowdown valve in the mudhole 15, blowdown valve is opened into the blowdown that can be realized in filter core 13 when routine use, reduction is torn open
The work for unloading lower cover 12, using more convenient.Ring flange 5 is provided with sealing ring mounting groove 16 and 6 bolt hole 17,6 on ring flange 5
A bolt hole 17 is uniformly distributed, and sealing ring position when sealing ring mounting groove 16 facilitates pipeline to connect is arranged on ring flange 5 and fixes, prevents
Only pipeline is because of pipeline water clock caused by sealing ring malposition.Flow channel 3, flow pass 4, flap 9, rocking bar 7,6 and of valve shaft
12 inner surface of lower cover carries out electrodeposited chromium processing, improves flow channel 3, flow pass 4, flap 9, rocking bar 7, valve shaft 6 and lower cover
The finish and corrosion resistance of 12 inner surfaces reduce impurity in flow channel 3, flow pass 4, flap 9, rocking bar 7,6 and of valve shaft
The accumulation of 12 inner surface of lower cover forms clogging, reduce flow channel 3, flow pass 4, flap 9, rocking bar 7, valve shaft 6 and under
The corrosion of 12 inner surface of lid is to enhance the service life of check valve.
Claims (5)
1. a kind of check valve, including valve body (1) and valve deck (2), the valve body (1) are connected with valve deck (2) by bolt, the valve
Flow channel (3) and flow pass (4) are equipped in body (1), flow channel (3) end and flow pass (4) end are all provided with
It is equipped with ring flange (5), it is characterised in that: valve shaft (6) are set in the valve body (1), are connected with rocking bar (7) on the valve shaft (6),
2 springs (8) are provided on the rocking bar (7), spring (8) other end is fixedly connected on flow pass (4), described to shake
Bar (7) connects flap (9) by positioning pin, and the flap (9) and valve body (1) junction are provided with sealing ring A(10), the valve
Valve (9) and flow pass (4) are adapted, and the bottom of the flow channel (3) is equipped with extension tube attached (11), the extension tube attached (11) and
Flow channel (3) connection, extension tube attached (11) bottom end are equipped with lower cover (12), and detent ring, institute are equipped in the flow channel (3)
Detent ring clamping filter core (13) is stated, filter core (13) other end extends into extension tube attached (11) and is fixedly connected with lower cover (12).
2. a kind of check valve according to claim 1, it is characterised in that: set at the cooperation of the valve deck (2) and valve body (1)
There is sealing ring B(14).
3. a kind of check valve according to claim 1, it is characterised in that: the lower cover (12) is equipped with mudhole (15),
Blowdown valve is equipped in the mudhole (15).
4. a kind of check valve according to claim 1, it is characterised in that: the ring flange (5) is provided with sealing ring installation
Slot (16) and 6 bolts hole (17).
5. a kind of check valve according to claim 1, it is characterised in that: the flow channel (3), flow pass (4), valve
Valve (9), rocking bar (7), valve shaft (6) and lower cover (12) inner surface carry out electrodeposited chromium processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821047613.0U CN208519228U (en) | 2018-07-04 | 2018-07-04 | A kind of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821047613.0U CN208519228U (en) | 2018-07-04 | 2018-07-04 | A kind of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208519228U true CN208519228U (en) | 2019-02-19 |
Family
ID=65336591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821047613.0U Active CN208519228U (en) | 2018-07-04 | 2018-07-04 | A kind of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208519228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506535A (en) * | 2018-07-04 | 2018-09-07 | 德阳市迪信佳阀门制造有限公司 | A kind of check valve |
-
2018
- 2018-07-04 CN CN201821047613.0U patent/CN208519228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506535A (en) * | 2018-07-04 | 2018-09-07 | 德阳市迪信佳阀门制造有限公司 | A kind of check valve |
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