CN208831816U - A kind of non-return valve - Google Patents
A kind of non-return valve Download PDFInfo
- Publication number
- CN208831816U CN208831816U CN201821453281.6U CN201821453281U CN208831816U CN 208831816 U CN208831816 U CN 208831816U CN 201821453281 U CN201821453281 U CN 201821453281U CN 208831816 U CN208831816 U CN 208831816U
- Authority
- CN
- China
- Prior art keywords
- valve
- dsah
- pot
- spool
- water inlet
- 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
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a kind of non-return valves, comprising: a valve body, inside one valve chamber of tool；A water outlet is connected between the body top and the valve chamber；A water inlet is connected between the body base and the valve chamber；One valve seat is arranged in the water inlet；One spool is arranged in the valve chamber and cooperates with the valve seat to be opened and closed the water inlet；One dsah-pot is arranged in the water inlet along water (flow) direction；It is fixed by more connecting rods with the valve body；The dsah-pot axial ends separately puts and towards the axial end face necking of water inlet outer end；One piston is slidably located in the dsah-pot；One piston rod, one end are fixed on piston, and the other end is fixed on spool, so that piston and valve spool；One earrings, fixation are set in outside the dsah-pot；One spring is set in outside the dsah-pot, and the spring one end connects spool, other end connecting lugs ring；The spring makes spool have fastening force with valve seat when closing the water inlet.
Description
Technical field
The utility model relates to fire-fighting equipment field more particularly to a kind of non-return valves.
Background technique
Non-return valve (also known as check-valves) refers to be flowed and automatic open and close flap by medium itself, for preventing medium from falling
The valve of stream, also known as non-return valve, check valve, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, main function
It is to prevent medium from flowing backwards, prevent pump and drive motor reversion and vessel media from releasing.Check-valves can also be used in wherein
Pressure may be raised above system pressure auxiliary system provide supply pipeline on.Check-valves can be divided mainly into swing type non-return
Valve (being rotated according to center of gravity) and lift check valve (being moved along axis).Non-return valve realizes opening and closing by the differential water pressures of its two sides, is opening
Its spool is quickly opened and closed during closing, and bring physical shock and water hammer effect are easy to destroy the structure of valve body, reduces it
Service life, traditional water hammer effect be a kind of figuratively method it refer to feed pump when starting and stopping, water impact pipe
Road, a kind of serious water attack of generation.Due to inside water pipe, inside pipe wall be it is smooth, water flowing is freely.When open valve is prominent
It so closes or feed pump stops, water flow can generate a pressure to valve and tube wall, mainly valve or pump.Due to tube wall light
Sliding, under the action of inertia, waterpower is rapidly reached maximum to subsequent water flow, and generates destruction, and here it is in hydraulics
" water hammer effect ", that is, positive water hammer.On the contrary, close valve throw open or water supply pump startup after, can also generate water hammer,
It is negative water hammer, but big without the former.
Utility model content
The utility model proposes a kind of non-return valve, which is buffered using water itself, thus make valve opening and closing compared with
Be it is mild, the phenomenon that opening rapid pass suddenly is prevented, to avoid the physical shock and issuable water between spool and valve seat
Hammer effect into shape.
The technical solution of the utility model is as follows:
A kind of non-return valve, comprising:
One valve body, inside one valve chamber of tool；A water outlet is connected between the body top and the valve chamber；The valve body bottom
A water inlet is connected between portion and the valve chamber；
One valve seat is arranged in the water inlet；
One spool is arranged in the valve chamber and cooperates with the valve seat to be opened and closed the water inlet；
One dsah-pot is arranged in the water inlet along water (flow) direction；It is fixed by more connecting rods with the valve body；It is described
Dsah-pot axial ends separately puts and towards the axial end face necking of water inlet outer end；
One piston is slidably located in the dsah-pot；
One piston rod, one end are fixed on piston, and the other end is fixed on spool, so that piston and valve spool；
One earrings, fixation are set in outside the dsah-pot；
One spring is set in outside the dsah-pot, and the spring one end connects spool, other end connecting lugs ring；It is described
Spring makes spool have fastening force with valve seat when closing the water inlet.
Wherein, another axial end also necking of the dsah-pot.
Wherein, the spool includes rigid structure plate and gasket seal；The gasket seal is fixed on the rigid structure
Plate towards in the one side of valve seat, and with the valve base sealing against；The piston rod other end is fixed on the rigid structure plate
On.
Wherein, the reentrant diameter of the dsah-pot towards the axial end of water inlet end face is small compared with other end reentrant diameter, and two
End reentrant diameter is not less than the half of dsah-pot interior diameter.
The utility model has the following beneficial effects:
1, the utility model is buffered using water itself, to keep valve opening and closing more mild, is prevented and is opened suddenly suddenly
The phenomenon that pass, to avoid the physical shock and issuable water hammer effect between spool and valve seat.
2, the dsah-pot of the utility model setting cooperates piston, effective to be carried out using the water accumulated in dsah-pot to piston
Buffering, to carry out linkage buffering to spool by connecting rod, structure is simple, is situated between using itself existing water in valve body as buffering
Matter, without additionally introducing buffer medium or structure.
3, the utility model is provided with spring, can not only play the role of limiting spool position, but also can use elastic change
Change the position of adjusting spool, to adapt to the different variations of hydraulic pressure, plays the role of automatic adjustment, pressure stabilizing, moreover it is possible to ensure to work as valve
When two side hydraulic pressure of core is identical, spool can have certain fastening force to valve seat, to ensure the one-way sealing of valve body and non-return
Effect.
Detailed description of the invention
Fig. 1 is structural schematic diagram when the utility model spool is opened；
Fig. 2 is the enlarged diagram of circled in Fig. 1；
Fig. 3 is schematic diagram when the utility model spool is closed；
Fig. 4 is the enlarged diagram of circled in Fig. 3.
Appended drawing reference indicates in figure are as follows:
1- valve body, 11- valve chamber, 12- water outlet, 13- water inlet, 2- valve seat, 3- spool, 4- dsah-pot, 31- rigid structure
Plate, 32- gasket seal, 41- connecting rod, 5- piston, 6- piston rod, 7- spring, 8- branch earrings.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1 to 4, a kind of non-return valve, comprising:
One valve body 1, inside one valve chamber 11 of tool；1 top of the valve body be connected to a water outlet 12 between the valve chamber 11；Institute
It states and is connected to a water inlet 13 between 1 bottom of valve body and the valve chamber 11；
One valve seat 2 is arranged in the water inlet 13；
One spool 3 is arranged in the valve chamber 11 and cooperates with the valve seat 2 to be opened and closed the water inlet 13；
One dsah-pot 4 is arranged in the water inlet 13 along water (flow) direction；It is solid by more connecting rods 41 and the valve body 1
It is fixed；4 axial ends of dsah-pot separately puts and towards the axial end face necking of 13 outer end of water inlet；
One piston 5 is slidably located in the dsah-pot 4；
One piston rod 6, one end are fixed on piston 5, and the other end is fixed on spool 3, so that piston 5 and spool 3 link；
One earrings 8, fixation are set in outside the dsah-pot 4；
One spring 7 is set in outside the dsah-pot 4, and described 7 one end of spring connects spool 3, other end connecting lugs ring 8；
There is fastening force with valve seat 2 when the spring 7 makes spool 3 close the water inlet 13.
Further, another axial end also necking of the dsah-pot 4.
Further, the spool 3 includes rigid structure plate 31 and gasket seal 32；The gasket seal 32 is fixed on institute
Rigid structure plate 31 is stated towards in the one side of valve seat 2, and is sealed against with the valve seat 2；6 other end of piston rod is fixed on
On the rigid structure plate 31.
Further, the reentrant diameter of the dsah-pot 4 towards the axial end of 13 end face of water inlet is straight compared with other end necking
Diameter is small, and both ends reentrant diameter is not less than the half of 4 interior diameter of dsah-pot.
Working principle of the utility model is:
Referring to Fig. 1 and 2, when 13 1 side hydraulic pressure of valve inleting water mouth is greater than 12 1 side hydraulic pressure of water outlet, in the impact of water flow
Under, 3 extension spring 7 of spool is mobile to 12 side of water outlet, and gasket seal 32 loses with valve seat 2 and is sealed against, and water is from water inlet
13 flow into valve chamber 11, and in this course, due to being full of water in dsah-pot 4, spool 3 is driven in moving process by connecting rod 41
Piston 5 moves in dsah-pot 4, since 4 axial ends of dsah-pot is open and necking, water flow is squeezed by piston 5 to flow out
Reversed active force can be played to piston 5 during dsah-pot 4, buffer function is played to piston 5, due to piston 5 and spool 3
Linkage, therefore, spool 3 is also by buffer function；The impact force that the stage spool 3 is subject to comes from and water flow, and buffer function is by bullet
Water in spring 7 and dsah-pot 4 pulls together to provide together.
Ginseng is seen figures 3 and 4, and when 3 liang of side hydraulic pressures of spool restore balance, under the elastic force effect of spring 7, spool 3 is to water inlet
The mobile return in mouthful 13 sides, during this, due to being full of water in dsah-pot 4, spool 3 passes through 41 band of connecting rod in moving process
Piston 5 moves in dsah-pot 4, since 4 axial ends of dsah-pot is open and necking, water flow is squeezed by piston 5 to flow
Reversed active force can be played to piston 5 during dsah-pot 4 out, buffer function is played to piston 5, due to piston 5 and valve
Core 3 links, and therefore, spool 3 is also by buffer function；The impact force that the stage spool 3 is subject to is to act in 7 restoring force of spring
Bottom spool 3 and 2 physical shock of valve seat, buffer function are provided by the water in dsah-pot 4.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of non-return valve characterized by comprising
One valve body (1), inside tool one valve chamber (11)；At the top of the valve body (1) be connected to a water outlet between the valve chamber (11)
(12)；A water inlet (13) are connected between valve body (1) bottom and the valve chamber (11)；
One valve seat (2), setting is in the water inlet (13)；
One spool (3), setting cooperate in the valve chamber (11) and with the valve seat (2) to be opened and closed the water inlet (13)；
One dsah-pot (4), along water (flow) direction setting in the water inlet (13)；Pass through more connecting rods (41) and the valve body
(1) fixed；Dsah-pot (4) axial ends separately puts and towards the axial end face necking of water inlet (13) outer end；
One piston (5), the dsah-pot (4) that is slidably located in are interior；
One piston rod (6), one end are fixed on piston (5), and the other end is fixed on spool (3), so that piston (5) and spool
(3) it links；
One earrings (8), fixation are set in the dsah-pot (4) outside；
One spring (7) is set in the dsah-pot (4) outside, and described spring (7) one end connects spool (3), other end connecting lugs
Ring (8)；The spring (7) makes spool (3) to have fastening force with valve seat (2) when closing water inlet (13).
2. a kind of non-return valve as described in claim 1, it is characterised in that: another axial end also necking of the dsah-pot (4).
3. a kind of non-return valve as claimed in claim 2, it is characterised in that: the spool (3) include rigid structure plate (31) and
Gasket seal (32)；The gasket seal (32) is fixed on the rigid structure plate (31) towards in the one side of valve seat (2), and with
The valve seat (2) is sealed against；Piston rod (6) other end is fixed on the rigid structure plate (31).
4. a kind of non-return valve as claimed in claim 3, it is characterised in that: the dsah-pot (4) is towards water inlet (13) end face
Axial end reentrant diameter it is small compared with other end reentrant diameter, both ends reentrant diameter is not less than the one of dsah-pot (4) interior diameter
Half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453281.6U CN208831816U (en) | 2018-09-06 | 2018-09-06 | A kind of non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821453281.6U CN208831816U (en) | 2018-09-06 | 2018-09-06 | A kind of non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208831816U true CN208831816U (en) | 2019-05-07 |
Family
ID=66312124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821453281.6U Active CN208831816U (en) | 2018-09-06 | 2018-09-06 | A kind of non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208831816U (en) |
-
2018
- 2018-09-06 CN CN201821453281.6U patent/CN208831816U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203286063U (en) | Slowly-closed mute axial-flow type check valve | |
| CN208831816U (en) | A kind of non-return valve | |
| CN207064736U (en) | A kind of swing type waterpower delayed on-off non-return valve | |
| CN211117947U (en) | Large-displacement floating ball trap valve seat | |
| CN204477396U (en) | A kind of one-way non-return control valve unit | |
| CN205479527U (en) | Check valve with adjustable damping buffering | |
| CN208605682U (en) | A kind of combined type check-valves | |
| CN209509060U (en) | A kind of device based on pumping plant ball check valve anti-floating power | |
| CN103775691B (en) | From flushing damping and wear-resistant screw-lift type safety check | |
| CN201100461Y (en) | Combined control dual petal butterfly check valve | |
| CN206539740U (en) | A kind of barrier film buffer-type rubber flap check valve | |
| CN207080654U (en) | A kind of ramp type three-level Slow Close non-return butterfly valve | |
| CN208816747U (en) | Low back pressure pipe power valve | |
| CN205806584U (en) | A kind of check valve | |
| CN210135315U (en) | Many orifices type water conservancy control valve | |
| CN204878881U (en) | Swing check valve | |
| CN211010010U (en) | Swing type rubber valve clack slow-closing check valve | |
| CN100353103C (en) | Full-flow buffer check valve | |
| CN209278503U (en) | Novel butterfly valve | |
| CN208252841U (en) | A kind of angle one-way valve | |
| CN207349518U (en) | A kind of external control check-valves suitable for ultralow pressure | |
| CN205896290U (en) | Fast closed check valve | |
| CN215568041U (en) | Gate valve opening and closing device for hydraulic safety valve | |
| CN206874826U (en) | A kind of hydraulic control conveys casting resin stop valve | |
| CN209213094U (en) | A kind of swing type speed closes check-valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |