CN206268573U - A kind of valve arrangement with cavitation-preventive cover - Google Patents
A kind of valve arrangement with cavitation-preventive cover Download PDFInfo
- Publication number
- CN206268573U CN206268573U CN201621048476.3U CN201621048476U CN206268573U CN 206268573 U CN206268573 U CN 206268573U CN 201621048476 U CN201621048476 U CN 201621048476U CN 206268573 U CN206268573 U CN 206268573U
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- China
- Prior art keywords
- cavitation
- preventive
- preventive cover
- valve
- cover
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Abstract
The utility model discloses a kind of valve arrangement with cavitation-preventive cover,The valve arrangement includes valve chest,Fluid inlet channel and fluid outlet channels are provided with the valve chest,The fluid inlet channel is located at the upstream of the fluid outlet channels,The fluid inlet channel is connected with the lower chambers,The fluid outlet channels are connected with upper chamber,Cavitation-preventive shade assembly is provided with the connected entrance of the upper chamber and lower chambers,There is the pressure chamber separated with upper chamber in the valve chest and positioned at the top of the upper chamber,The pressure chamber is connected by pipeline with the fluid outlet channels,The elastic diaphragm for moving under pressure is provided with the pressure chamber,The elastic diaphragm is connected with one end of valve rod,The other end of the valve rod is connected through upper chamber with cavitation-preventive shade assembly,The utility model can solve valve in the prior art and often cavitate,Cause the problem of excessive noise and vibration.
Description
Technical field
The utility model is related to fluid valve, more particularly to a kind of valve arrangement with cavitation-preventive cover.
Background technology
Hydraulic control valve is exactly the valve of hydraulic pressure control, and it is by a main valve and its Dao Guan ﹑ Dao Fa ﹑ Zhen Fa ﹑ balls set up
Valve and pressure gauge etc. are constituted, and using pipeline, pressure medium, as power source, is opened and closed, adjusted in itself for it.According to occupation mode
It is different, it is possible to achieve pressure-reduced and-regulated, pressure release hold the pressure function such as Slow Close non-return and fast shut-off (similar to magnetic valve).
Hydraulic control valve can be divided into diaphragm type and the class of piston-type two by structure, and operation principle is identical, is all with upstream and downstream pressure
Power difference △ P are power, by pilot valve control, make barrier film (piston) fluid pressure type differential operation, are adjusted by hydraulic automatism completely, so that
Main valve valve disc is fully open or fully closed or in adjustment state.Press water in the control room of entrance barrier film (piston) top
When being discharged to air or down stream low pressure zones, the pressure value that the pressure value below valve disc bottom and barrier film is greater than top is acted on,
So main valve valve disc to be shifted onto the position for fully opening；When the press water entered in the control room of barrier film (piston) top can not be discharged to
When air or down stream low pressure zones, the pressure value that the pressure value above barrier film (piston) is greater than lower section is acted on, so will be
Main valve valve disc is pressed onto the position for completely closing；When the pressure value in the control room of barrier film (piston) top is in inlet pressure with outlet
When in the middle of pressure, main valve valve disc is at adjustment state, and its adjusting position depends on the needle-valve and adjustable pilot valve in conduit system
Jointly control effect.Adjustable pilot valve can be opened greatly by the outlet pressure in downstream and with its change or turn down its own
Small valve port, so as to change the pressure value of barrier film (piston) top control room, controls the adjusting position of valve disc.
Valve with above-mentioned characteristic, close to it is fully closed when, the action of flap accelerates, and the water hammer (impact of water easily occurs
Pressure), close to it is fully closed when, valve event is more slow better, and throttle mechanism can be then set on flap.In addition when valve is in High Pressure Difference
Or during high flow rate, often cavitate, excessive noise and vibration is caused, so as to damage valve and associated conduit
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of valve knot with cavitation-preventive cover
Structure, it can solve valve in the prior art and often cavitate, and cause the problem of excessive noise and vibration.
The purpose of this utility model is realized using following technical scheme：
A kind of valve arrangement with cavitation-preventive cover, the valve arrangement includes valve chest, and fluid is provided with the valve chest
Access road and fluid outlet channels, the fluid inlet channel are located at the upstream of the fluid outlet channels, and the fluid enters
Mouth passage is connected with the lower chambers, and the fluid outlet channels are connected with upper chamber, and the upper chamber connects with lower chambers
Cavitation-preventive shade assembly is provided with mouthful, there is the pressure separated with upper chamber in the valve chest and positioned at the top of the upper chamber
Power chamber, the pressure chamber is connected by external pipe fitting with the stream socket passage, is provided with the pressure chamber in pressure
The lower mobile elastic diaphragm of power effect, the elastic diaphragm is connected with one end of valve rod, and the other end of the valve rod passes through epicoele
Room is connected with cavitation-preventive shade assembly.
Preferably, the cavitation-preventive shade assembly includes outer cavitation-preventive cover and interior cavitation-preventive cover, and the outer cavitation-preventive cover is top
The cup part of portion opening, the wall portion of the outer cavitation-preventive cover and is provided with the first groove near the position of bottom, described interior anti-
The cup part of the bottom opening of cavitation erosion cover, the interior cavitation-preventive cover stretches into outer anti-from the open top of the outer cavitation-preventive cover
Cavitation erosion cover in and the outer wall of the interior cavitation-preventive cover be engaged with the inwall of the outer cavitation-preventive cover, the interior cavitation-preventive cover it is upper
Wall portion is provided with the second groove, and the outer cavitation-preventive cover is located at the connected entrance of the upper chamber and lower chambers and the outer gas-tight
Erosion cover is fixed on the valve chest.
Preferably, second groove is oblique slot.
Preferably, the interior cavitation-preventive cover is connected with the lower end of the valve rod.
Preferably, the fluid inlet channel is upstream, and the fluid outlet channels are downstream, the fluid inlet channel
It is located in same level with fluid outlet channels, the cavitation-preventive shade assembly and the pressure chamber and the fluid outlet channels
In 60 degree of angles.
Preferably, top cover is provided between the upper chamber and pressure chamber, is set between the top cover and interior cavitation-preventive cover
There is spring.
Preferably, the lower surface of the top cover is provided with the first lug boss, second is provided with the top of the flap raised
Portion, one end of the spring is set in the first lug boss, and the other end is set in the second lug boss.
Preferably, it is provided with screen pack in the lower chambers.
Preferably, the screen pack is tube structure, and an end entrance of the screen pack faces the fluid intake and leads to
Road, the other end of the screen pack is pressed against on a side end cap of the lower chambers.
Compared to existing technology, the beneficial effects of the utility model are：The utility model fluid by when cause
Fluid pressure is reduced and makes cavitation erosion minimum.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model embodiment；
Fig. 2 is the structural representation of cavitation-preventive shade assembly in the utility model embodiment；
Fig. 3 is the structural representation of interior cavitation-preventive cover in the utility model embodiment；
In figure：1st, valve chest；2nd, fluid inlet channel；3rd, screen pack；4th, end cap；5th, fluid outlet channels；6th, first connects
Through hole；7th, valve rod；8th, top board；9th, chamber lid；10th, the second intercommunicating pore；11st, pressure chamber；12nd, cavitation-preventive shade assembly；13rd, epicoele
Room；14th, lower chambers；15th, top cover；16th, elastic diaphragm；17th, outer cavitation-preventive cover；18th, bottom；19th, interior cavitation-preventive cover；20th, first
Groove；21st, the second locking nut；22nd, the second check bolt；23rd, spring；24th, the first locking nut；25th, the first check bolt；
26th, lower platen；27th, the second groove；28th, the first lug boss；29th, the second lug boss.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the utility model is described further：
It is as shown in Figures 1 to 3 a kind of valve arrangement with cavitation-preventive cover of the utility model, the valve arrangement includes valve chest
1, fluid inlet channel 2 and fluid outlet channels 5 are provided with the valve chest 1, the fluid inlet channel 2 is located at the stream
The upstream of body exit passageway 5, the fluid inlet channel 2 is connected with the lower chambers 14, the fluid outlet channels 5 and epicoele
Room 13 is connected, and cavitation-preventive shade assembly 12 is provided with the connected entrance of the upper chamber 13 and lower chambers 14, and institute is located in the valve
Stating the top of upper chamber 13 has the pressure chamber 11 separated with upper chamber 13, and the pressure chamber 11 passes through external pipe fitting and the stream
Connected at body exit and entrance, the elastic diaphragm 16 for moving under pressure, the elasticity are provided with the pressure chamber 11
Barrier film 16 is connected with one end of valve rod 7, and the other end of the valve rod 7 is connected through upper chamber 13 with cavitation-preventive shade assembly 12, on
The setting of chamber 13, lower chambers 14 and fluid inlet channel 2 and fluid outlet channels 5 can be effectively reduced the work of cavitation erosion
With.
Cavitation-preventive shade assembly 12 includes outer cavitation-preventive cover 17 and interior cavitation-preventive cover 19, and the outer cavitation-preventive cover 17 is to open at top
The cup part of mouth, the wall portion of the outer cavitation-preventive cover 17 and the position near bottom 18 are provided with the first groove 20, described interior
The cup part of the bottom opening of cavitation-preventive cover 19, the interior cavitation-preventive cover 19 is from the open top of the outer cavitation-preventive cover 17
Stretch into outer cavitation-preventive cover 17 and the outer wall of the interior cavitation-preventive cover 19 is engaged with the inwall of the outer cavitation-preventive cover 17, it is described
The upper wall portions of interior cavitation-preventive cover 19 are provided with the second groove 27, and the outer cavitation-preventive cover 17 is located at the upper chamber 13 and lower chambers
At 14 connected entrance and the outer cavitation-preventive cover 17 is fixed on the valve chest 1.
Second groove 27 is oblique slot.
Interior cavitation-preventive cover 19 is connected with the lower end of the valve rod 7.
Fluid inlet channel 2 is upstream, and the fluid outlet channels 5 are downstream, and the fluid inlet channel 2 and fluid go out
Mouth passage 5 is located in same level, and the cavitation-preventive shade assembly and the pressure chamber and the fluid outlet channels are in 60 degree
Angle, the setting can preferably make cavitation-preventive shade assembly work so as to effectively reduce cavitation erosion.
Top cover 15 is provided between upper chamber 13 and pressure chamber 11, is provided between the top cover 15 and interior cavitation-preventive cover 19
Spring 23.
The lower surface of top cover 15 is provided with the first lug boss 28, and the second lug boss 29, the bullet are provided with the top of flap
One end of spring 23 is set in the first lug boss 28, and the other end is set in the second lug boss 29, and the structure can effectively give spring 23
Positioning.
Screen pack 3 is provided with lower chambers 14.
Screen pack 3 is tube structure, and an end entrance of the screen pack 3 faces the fluid inlet channel 2, the mistake
The other end of filter screen 3 is pressed against on a side end cap 4 of the lower chambers 14, the both ends open of the screen pack 3, and is set in wall portion
Filter bores are equipped with, the screen pack 3 can not only play a role in filtering, prevent big impurity from entering into cavitation-preventive shade assembly 12 and cause
Block, and it also has the antihypertensive effect on a top, meanwhile, the mounting means of the screen pack 3 in the present embodiment is simple, and structure is more
Adduction is managed.
In the present embodiment, the wall portion of fluid outlet channels 5 is provided with the first intercommunicating pore 6, and in the present embodiment, on top cover 15
Chamber lid 9 is installed, the space between top cover 15 and chamber lid 9 is pressure chamber 11, and the second intercommunicating pore 10 is provided with chamber lid 9, the
One intercommunicating pore 6 is connected by Relief pilot valve and the second intercommunicating pore 10, and the second intercommunicating pore 10 is connected by external pipe fitting and causes fluid
Access road 2 is consistent with the pressure in pressure chamber 11.
Further, in the present embodiment, the edge of elastic diaphragm 16 is placed between top cover 15 and chamber lid 9, and elastic diaphragm 16
Upper surface be provided with top board 8, the lower surface of elastic diaphragm 16 is provided with lower platen 26, the upper end of valve rod 7 and top board 8 and
Lower platen 26 is connected, more specifically, in the present embodiment the upper end of valve rod 7 sequentially pass through lower platen 26, elastic diaphragm 16 and on
Pressing plate 8, and the top of valve rod 7 is provided with the first locking nut 24, and also the top of the first locking nut 24 sets first
Check bolt 25, first check bolt 25 is connected through the top of the first locking nut 24 with the top of valve rod 7, valve rod 7
Lower end passes through interior cavitation-preventive cover 19, and the bottom of valve rod 7 is provided with the second locking nut 21, the lower end of second locking nut 21
The second check bolt 22 is provided with face, second check bolt 22 is passed through under end and the valve rod 7 of the second locking nut 21
End face is connected, and the structure can effectively prevent the loose or dislocation in motion process of valve rod 7.
In the present embodiment, when water enters by fluid inlet channel 2, in the first groove by outer cavitation-preventive cover 17
20 and by the second groove 27 on interior cavitation-preventive cover 19, repeatedly decompression is realized in the process, reduce cavitation erosion.
When work, current enter valve inner to the present embodiment by fluid inlet channel 2, flow through screen pack 3 and arrive
Up at the position of cavitation-preventive shade assembly 12, the inner chamber of outer cavitation-preventive cover 17 is entered by first groove 20 of outer cavitation-preventive cover 17, then
The inner chamber of interior cavitation-preventive cover 19 is upwardly into along its circumferential wall, thus promotes interior cavitation-preventive cover 19 to be moved relative to outer cavitation-preventive cover 17
Dynamic, while drive flap and valve rod 7 to move up, the elastic diaphragm 16 at top is with top board, lower platen also while upward
It is mobile.
Valve arrangement in the present embodiment includes that the design of valve chest 1 is more reasonable, cavitation-preventive shade assembly 12 and the knot of valve chest 1
Conjunction can effectively reduce cavitation erosion.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection of the utility model claim
Within the scope of.
Claims (9)
1. a kind of valve arrangement with cavitation-preventive cover, the valve arrangement includes valve chest (1), is provided with the valve chest (1)
Fluid inlet channel (2) and fluid outlet channels (5), it is characterised in that the fluid inlet channel (2) goes out positioned at the fluid
The upstream of mouth passage (5), is additionally provided with lower chambers (14) and upper chamber (13) on the valve chest (1), the fluid intake leads to
Road (2) is connected with the lower chambers (14), and the fluid outlet channels (5) connect with upper chamber (13), the upper chamber (13)
With cavitation-preventive shade assembly (12) is provided with the connected entrance of lower chambers (14), in the valve positioned at the upper chamber (13) top
With the pressure chamber (11) separated with upper chamber (13), the elasticity for moving under pressure is provided with the pressure chamber (11)
Barrier film (16), elastic diaphragm (16) top is upper pressure chamber, and elastic diaphragm (16) lower section is lower pressure chamber, the two-way pressure chamber
(11) connected with the fluid outlet channels (5) and the fluid inlet channel (2) place respectively by external pipe fitting, the elasticity
Barrier film (16) is connected with one end of valve rod (7), and the other end of the valve rod (7) passes through upper chamber (13) and cavitation-preventive shade assembly
(12) connect.
2. a kind of valve arrangement with cavitation-preventive cover according to claim 1, it is characterised in that the cavitation-preventive shade assembly
(12) including outer cavitation-preventive cover (17) and interior cavitation-preventive cover (19), the outer cavitation-preventive cover (17) is open-topped cupule
Part, the wall portion of the outer cavitation-preventive cover (17) and is provided with the first groove (20), the interior gas-tight near the position of bottom (18)
The cup part of the bottom opening of erosion cover (19), open top of the interior cavitation-preventive cover (19) from the outer cavitation-preventive cover (17)
In stretch into outer cavitation-preventive cover (17) and the outer wall of the interior cavitation-preventive cover (19) and the outer cavitation-preventive cover (17) inwall phase
Coordinate, the upper wall portions of the interior cavitation-preventive cover (19) are provided with the second groove (27), and the outer cavitation-preventive cover (17) is positioned at described
At the connected entrance of upper chamber (13) and lower chambers (14) and the outer cavitation-preventive cover (17) is fixed on the valve chest (1).
3. a kind of valve arrangement with cavitation-preventive cover according to claim 2, it is characterised in that second groove (27)
It is oblique slot.
4. a kind of valve arrangement with cavitation-preventive cover according to claim 2, it is characterised in that the interior cavitation-preventive cover
(19) lower end with the valve rod (7) is connected.
5. a kind of valve arrangement with cavitation-preventive cover according to claim 1, it is characterised in that the fluid inlet channel
(2) cavitation-preventive shade assembly is flowed into for upstream and by screen pack, the fluid outlet channels (5) are downstream, the fluid intake
Passage (2) and fluid outlet channels (5) on horizontal plane, the cavitation-preventive shade assembly and the pressure chamber (11) and the stream
Body exit passageway (5) is in 60 degree of angles.
6. a kind of valve arrangement with cavitation-preventive cover according to any one of claim 2 to 4, it is characterised in that described
Top cover (15) is provided between upper chamber (13) and pressure chamber (11), is set between the top cover (15) and interior cavitation-preventive cover (19)
There is spring (23).
7. a kind of valve arrangement with cavitation-preventive cover according to claim 6, it is characterised in that described a kind of have gas-tight
The lower surface that losing the valve arrangement of cover has flap, the top cover (15) is provided with the first lug boss (28), the top of the flap
The second lug boss (29) is provided with, one end of the spring (23) is set in the first lug boss (28), and the other end is set in second
Lug boss (29).
8. a kind of valve arrangement with cavitation-preventive cover according to claim 1, it is characterised in that in the lower chambers (14)
It is provided with screen pack (3).
9. a kind of valve arrangement with cavitation-preventive cover according to claim 8, it is characterised in that the screen pack (3) is
Tube structure a, end entrance of the screen pack (3) faces the fluid inlet channel (2), the screen pack (3) it is another
Side pressure is leaned against on a side end cap (4) of the lower chambers (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048476.3U CN206268573U (en) | 2016-09-09 | 2016-09-09 | A kind of valve arrangement with cavitation-preventive cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048476.3U CN206268573U (en) | 2016-09-09 | 2016-09-09 | A kind of valve arrangement with cavitation-preventive cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206268573U true CN206268573U (en) | 2017-06-20 |
Family
ID=59036669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621048476.3U Expired - Fee Related CN206268573U (en) | 2016-09-09 | 2016-09-09 | A kind of valve arrangement with cavitation-preventive cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206268573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN108180304A (en) * | 2017-12-29 | 2018-06-19 | 浙江省平湖市北辰实业有限公司 | A kind of four-way valve of the shockproof shell of band |
-
2016
- 2016-09-09 CN CN201621048476.3U patent/CN206268573U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387825A (en) * | 2017-07-31 | 2017-11-24 | 陈炯亮 | A kind of pressure-reducing valve |
| CN107387825B (en) * | 2017-07-31 | 2024-04-05 | 陈炯亮 | Pressure reducing valve |
| CN108180304A (en) * | 2017-12-29 | 2018-06-19 | 浙江省平湖市北辰实业有限公司 | A kind of four-way valve of the shockproof shell of band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Valve structure with gas -tight loses cover Effective date of registration: 20181203 Granted publication date: 20170620 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd. Pledgor: GUANGDONG YONGQUAN VALVE TECHNOLOGY Co.,Ltd. Registration number: 2018990001132 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200109 Granted publication date: 20170620 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd. Pledgor: GUANGDONG YONGQUAN VALVE TECHNOLOGY Co.,Ltd. Registration number: 2018990001132 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |