CN208816747U - Low back pressure pipe power valve - Google Patents
Low back pressure pipe power valve Download PDFInfo
- Publication number
- CN208816747U CN208816747U CN201821610048.4U CN201821610048U CN208816747U CN 208816747 U CN208816747 U CN 208816747U CN 201821610048 U CN201821610048 U CN 201821610048U CN 208816747 U CN208816747 U CN 208816747U
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- CN
- China
- Prior art keywords
- valve
- flap
- valve body
- piston
- piston chamber
- 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.)
- Expired - Fee Related
Links
- 238000013016 damping Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
A kind of low back pressure pipe power valve.It is characterized by: small flap is rotatably installed in mounting groove by shaft, and small flap can seal with passway and cooperate；Second hydraulic damping mechanism is arranged on valve body top, including second piston chamber, second piston bar, the second diversion pipe, third diversion pipe, spring；Second piston bar is arranged vertically, second piston chamber sealing in the upper end is slidably matched, lower end is stretched out and is connect with small flap by connecting rod, and the second diversion pipe is connected to the cavity of resorption of second piston chamber and the intake channel of valve body, and third diversion pipe is connected to the epicoele of second piston chamber and the exit passageway of valve body；Spring can drive second piston bar to move downward between being arranged at the top of second piston top of chamber and second piston bar.When the advantage is that valve opening and closing is more flexible, and closing, while spring bias and pressure difference under effect, so that preventing from leaking even if also ensuring that the sealing effect of valve in the case where low back pressure.
Description
Technical field
The utility model relates to a kind of valves, are specifically related to a kind of low back pressure pipe power valve.
Background technique
Check-valves refers to opening and closing element for round flap and by own wt and pressure medium generation movement to block medium to fall
A kind of valve of stream.Belong to automatic valve class, also known as non-return valve, check valve, return valve or isolating valve.Flap motion mode is divided into lifting
Formula and swing type.
Swing check valve has the flap that can be pivoted, when inlet pressure is greater than flap weight and its flow resistance
The sum of when, valve is turned on.Conversely, valve is then closed when medium is flow backwards.
Check-valves is commonly used for the bottom valve of water plug, can prevent the reflux of water, the disadvantage is that resistance is big, when closing is sealed
Property it is poor, especially valve back pressure be lower than 0.3MPa when, it may appear that serious leak problem.
Utility model content
In order to overcome the shortcomings of background technique, the utility model provides a kind of low back pressure pipe power valve, solves existing check-valves
Resistance is big, when closing the problem of poor sealing performance.
Technical solution adopted by the utility model: a kind of low back pressure pipe power valve, including valve body, valve shaft, big valve flap；It is described
The horizontal channel of one-way flow is formed in valve body, the horizontal channel includes intake channel and exit passageway；The big valve flap
It is rotatably installed in the horizontal channel of valve body by valve shaft, and big valve flap can cooperate with valve seal；Further include small flap,
Shaft, connecting rod, the second hydraulic damping mechanism；The back side is equipped with mounting groove in the middle part of the big valve flap, and installation slot center is equipped with passway；
The small flap is rotatably installed in mounting groove by shaft, and small flap can seal with passway and cooperate；
Second hydraulic damping mechanism is arranged on valve body top, including second piston chamber, second piston bar, the second water conservancy diversion
Pipe, third diversion pipe, spring；The second piston bar arranges that second piston chamber sealing in the upper end is slidably matched, and lower end is stretched vertically
It connect out and with small flap by connecting rod, the cavity of resorption of the second diversion pipe connection second piston chamber and the intake channel of valve body,
The epicoele of the third diversion pipe connection second piston chamber and the exit passageway of valve body；The spring is arranged on second piston chamber top
Between at the top of portion and second piston bar, second piston bar can be driven to move downward.
The big valve flap slips back structure in wing type close to the side of exit passageway.
It further include the first hydraulic damping mechanism, the setting of first hydraulic damping mechanism is in valve body lower portion, including the first work
Fill in chamber, First piston bar, the first diversion pipe；The First piston bar is slidably matched with the sealing of first piston chamber, and described first is living
Stopper rod one end is stretched out and, the intake channel of first diversion pipe connection the first piston chamber and valve body corresponding with big valve flap.
The big valve flap is obliquely installed, the setting of first hydraulic damping mechanism corresponding tilt.
The big valve flap is in triple eccentric seat sealing system.
When pressure increase valve needs to open in intake channel, medium enters second piston chamber by the second diversion pipe
Cavity of resorption drives second piston bar that spring power is overcome to rise, to drive small flap to open by connecting rod, while medium passes through
First diversion pipe enters first piston chamber, and First piston bar is driven to act, First piston bar push big valve flap open, with into
Pressure further increases in mouthful channel, and big valve flap fully opens under the pressure effect of medium.
When pressure reduction valve needs to close in intake channel, big valve flap is by self gravity quick closedown as first
The position of plunger rod contacts, after big valve flap completely closes, pressure is further decreased in intake channel, and medium passes through third diversion pipe
Second piston chamber is entered, in combination with the elastic force of spring, second piston bar downward actuation is pushed, small flap is pushed slowly to close
It closes.
The beneficial effects of the utility model are: small flap and the second damping mechanism are set, so that valve opening and closing is more flexible,
And when closing, while spring bias and pressure difference under effect, even if also ensuring that valve in the case where low back pressure
Sealing effect prevents from leaking.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the low back pressure pipe power valve of the utility model embodiment.
Specific embodiment
For make the above-mentioned purpose of the utility model, feature and a little can become apparent it is understandable, with reference to the accompanying drawing to this
Invention is further described in detail, and embodiments given below is only for illustrating the utility model, rather than in order to limit
The scope of the utility model.
In the description of the present invention, it should be noted that term " first ", " second ", " third " are only used for conveniently
The purpose of description, cannot be understood as indicating or implying relative importance.
As shown, a kind of low back pressure pipe power valve, including valve body 1, valve shaft 2, big valve flap 3, the first hydraulic damping mechanism 4,
Small flap 5, shaft 6, connecting rod 7, the second hydraulic damping mechanism 8.
The horizontal channel of one-way flow is formed in the valve body 1, the horizontal channel includes intake channel 11 and outlet
Channel 12；The big valve flap 3 is rotatably installed in the horizontal channel of valve body 1 by valve shaft 2, and big valve flap 3 can be with valve body 1
Sealing cooperation.
The setting of first hydraulic damping mechanism 4 is in 1 lower part of valve body, including first piston chamber 41, First piston bar 42, the
One diversion pipe (is not drawn into) in figure；The First piston bar 42 is slidably matched with the sealing of first piston chamber 41, the first piston
42 one end of bar is stretched out and, the intake channel of first diversion pipe connection the first piston chamber 41 and valve body 1 corresponding with big valve flap 3
11。
The 3 middle part back side of big valve flap is equipped with mounting groove 31, and 31 center of mounting groove is equipped with passway 32；The small flap 5
It is rotatably installed in mounting groove 31 by shaft 6, and small flap 5 can seal with passway 32 and cooperate；
The setting of second hydraulic damping mechanism 8 is on 1 top of valve body, including second piston chamber 81, second piston bar 82, the
Two diversion pipes 83, third diversion pipe 84；The second piston bar 82 vertically match by arrangement, the sealing sliding of the upper end second piston chamber 81
Close, lower end, which is stretched out, simultaneously to be connect with small flap 5 by connecting rod 7, second diversion pipe 83 be connected to the cavity of resorption of second piston chamber 81 with
The intake channel 11 of valve body 1, the third diversion pipe 84 are connected to the epicoele of second piston chamber 81 and the exit passageway 12 of valve body 1.
Spring 85 is equipped in the second piston chamber 81, and the setting of the spring 85 is at 81 top of second piston chamber and second
Between 82 top of piston rod, second piston bar 82 can be driven to move downward.
When pressure increase valve needs to open in intake channel 11, medium enters second piston by the second diversion pipe 83
The cavity of resorption of chamber 81 drives second piston bar 82 that 85 elastic force of spring is overcome to rise, thus drive small flap 5 to open by connecting rod 7,
Medium enters first piston chamber 41 by the first diversion pipe simultaneously, and First piston bar 42 is driven to act, and First piston bar 42 pushes away
Dynamic big valve flap 3 is opened, to reduce flow resistance, be convenient for valve opening, as pressure further increases in intake channel 11, big valve
Valve 3 fully opens under the pressure effect of medium.
Wherein, 42 maximum of First piston bar is able to maintain the aperture of big valve flap 85%.
When in intake channel 11 pressure reduce valve need to close when, big valve flap 3 by self gravity quick closedown as
The position that First piston bar 42 contacts, due to the effect of damping, the subsequent closing velocity of big valve flap 3 will become slowly, thus
Most of water hammer energy is eliminated, until completely closing, so that protective conduit long-term safety is run.
After big valve flap 3 completely closes, pressure is further decreased in intake channel 11, and medium is entered by third diversion pipe 84
82 downward actuation of second piston bar is pushed in combination with the elastic force of spring 85 to second piston chamber 81, pushes small flap 5 slow
It is slow to close.
Using the above structure, it can not only be effectively eliminated by the first hydraulic damping mechanism 4 because termination of pumping, burst accident etc. draw
Water hammer caused by valve is closed is played, so that protective conduit long-term safety is run；Size flap and the first fluid power is cooperated to hinder simultaneously
Buddhist nun mechanism 4 and the second hydraulic damping mechanism 8, when valve starts, can further decrease flow resistance, can so that opening and closing is more flexible
It leans on, while spring 85 is set in second hydraulic damping mechanism 8 and is loaded, so that valve is the case where inlet outlet pressure differential is 0.05MP
Under, it remains to be safely operated, greatly improves sealing effect when valve is closed, prevent from leaking.
In addition, the big valve flap 3 is obliquely installed, the setting of first hydraulic damping mechanism, 4 corresponding tilt is obliquely installed energy
It is enough to reduce opening and closing stroke, it is further reduced impact force when closing valve.
The big valve flap 3 slips back structure in wing type close to the side of exit passageway 12, can be effectively reduced big when operation
The shake of flap 3 causes pipe vibration, reduces noise, reduces abrasion, improves service life.
The big valve flap 3 is in triple eccentric seat sealing system, high-low pressure self-tightening sealing, acts sensitiveer, and sealing performance is also more
It is good.
Embodiment is not construed as the limitation to utility model, but any spiritual improvements introduced based on the utility model,
It should all be within the protection scope of the utility model.
Claims (5)
1. a kind of low back pressure pipe power valve, including valve body (1), valve shaft (2), big valve flap (3)；It is formed in the valve body (1) unidirectional
The horizontal channel of circulation, the horizontal channel include intake channel (11) and exit passageway (12)；The big valve flap (3) passes through valve
Axis (2) is rotatably installed in the horizontal channel of valve body (1), and big valve flap (3) can seal with valve body (1) and cooperate；
It is characterized by also including small flap (5), shaft (6), connecting rod (7), the second hydraulic damping mechanisms (8)；The big valve flap
(3) the middle part back side is equipped with mounting groove (31), and mounting groove (31) center is equipped with passway (32)；The small flap (5) passes through shaft
(6) it is rotatably installed in mounting groove (31), and small flap (5) can seal with passway (32) and cooperate；
Second hydraulic damping mechanism (8) is arranged on valve body (1) top, including second piston chamber (81), second piston bar
(82), the second diversion pipe (83), third diversion pipe (84), spring (85)；The second piston bar (82) is vertical to arrange, the upper end
Second piston chamber (81) sealing is slidably matched, and lower end is stretched out and connect with small flap (5) by connecting rod (7), second water conservancy diversion
Manage the cavity of resorption of (83) connection second piston chamber (81) and the intake channel (11) of valve body (1), third diversion pipe (84) connection
The epicoele of second piston chamber (81) and the exit passageway (12) of valve body (1)；The spring (85) is arranged in second piston chamber (81)
Between at the top of top and second piston bar (82), second piston bar (82) can be driven to move downward.
2. low back pressure pipe power valve according to claim 1, it is characterised in that: the big valve flap (3) is close to exit passageway
(12) side slips back structure in wing type.
3. low back pressure pipe power valve according to claim 1 or 2, it is characterised in that: further include the first hydraulic damping mechanism
(4), first hydraulic damping mechanism (4) is arranged in valve body (1) lower part, including first piston chamber (41), First piston bar
(42), the first diversion pipe；The First piston bar (42) is slidably matched with first piston chamber (41) sealing, the First piston bar
(42) one end is stretched out and corresponding with big valve flap (3), first diversion pipe connection first piston chamber (41) and valve body (1) into
Mouth channel (11).
4. low back pressure pipe power valve according to claim 3, it is characterised in that: the big valve flap (3) is obliquely installed, and described
The setting of one hydraulic damping mechanism (4) corresponding tilt.
5. low back pressure pipe power valve according to claim 1, it is characterised in that: the big valve flap (3) is in three eccentricity sealing knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821610048.4U CN208816747U (en) | 2018-09-30 | 2018-09-30 | Low back pressure pipe power valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821610048.4U CN208816747U (en) | 2018-09-30 | 2018-09-30 | Low back pressure pipe power valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208816747U true CN208816747U (en) | 2019-05-03 |
Family
ID=66279036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821610048.4U Expired - Fee Related CN208816747U (en) | 2018-09-30 | 2018-09-30 | Low back pressure pipe power valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208816747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173579A (en) * | 2019-05-07 | 2019-08-27 | 浙江高中压阀门有限公司 | A kind of fused salt check-valves and its manufacture craft for photo-thermal power generation |
-
2018
- 2018-09-30 CN CN201821610048.4U patent/CN208816747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173579A (en) * | 2019-05-07 | 2019-08-27 | 浙江高中压阀门有限公司 | A kind of fused salt check-valves and its manufacture craft for photo-thermal power generation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 |