CN106870779B - Protecting against shock lift check valve - Google Patents
Protecting against shock lift check valve Download PDFInfo
- Publication number
- CN106870779B CN106870779B CN201710218470.9A CN201710218470A CN106870779B CN 106870779 B CN106870779 B CN 106870779B CN 201710218470 A CN201710218470 A CN 201710218470A CN 106870779 B CN106870779 B CN 106870779B
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- China
- Prior art keywords
- flap
- valve
- spacing block
- head
- guide sleeve
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The present invention relates to a kind of protecting against shock lift check valves, it is characterised in that：Spacing block is equipped with inside guide sleeve, spacing block is isolated into plunger shaft and pressure regulating cavity for inner cavity is oriented to, and plunger shaft is in the top of spacing block, pressure regulating cavity is in the lower section of spacing block, guide sleeve top is equipped with air inlet, which communicates with plunger shaft, and the other end is communicated with outlet flow；Flap is made of flap head and flap handle, flap head lower end surface is equipped with the valve clack sealing surface that sealing can be formed with sealing surface of seat, flap head upper end is protruded into pressure regulating cavity, flap handle is mounted on flap head upper end, flap handle upper end penetrates the centre bore of spacing block, plunger shaft is protruded into, an adjustment hole perpendicular to valve clack sealing surface is equipped between the upper and lower end face of flap head, which is connected to inlet channel and pressure regulating cavity；It is equipped with counter sink at spacing block position, is equipped with floating plug at the position of falling counter sink, venthole is equipped with inside valve deck, there is flap and sealing surface of seat to be hardly damaged, the advantage that the service life is long, noise is small.
Description
Technical field
The present invention relates to a kind of valves, more particularly, to a kind of protecting against shock lift check valve.
Background technique
Lift check valve refers to be flowed and automatic open and close flap by medium itself, for the valve for preventing medium from flowing backwards
Door, check-valves belong to a kind of automatic valve, and main function is to prevent medium from flowing backwards, prevent pump and drive motor reversion, with
And vessel media is released, existing lift check valve mainly includes：Valve body, valve seat, flap, guide sleeve and valve deck, in valve body
Equipped with inlet channel, outlet flow and lumen, it is equipped with valve seat in inlet channel outlet end, valve seat upper end is equipped with sealing surface of seat,
Valve deck is mounted on upper end in the middle part of valve body, and guiding set upper side is fixedly mounted between valve body and valve deck, and lumen is protruded into guide sleeve lower end,
Flap is arranged inside guide sleeve, and flap outer circle and guide sleeve inner wall form upper and lower guiding, and flap lower end is equipped with can be close with valve seat
Cover forms the valve clack sealing surface for opening and closing valve, and guiding set upper side is equipped with a non-return hole, the non-return hole one end and outlet flow
It communicates, is communicated at the other end and the flap top in guide sleeve, its shortcoming is that：Flap is in opening process, valve inlet side
When medium interrupts suddenly, flap under the action of the medium of valve export side, quickly close downwards, and valve clack sealing surface is to valve by flap
Seat sealing surface forms a biggish impact force, and valve clack sealing surface is easy to be destroyed with sealing surface of seat, influences service life,
Noise is big simultaneously.
Summary of the invention
In view of the deficiencies in the prior art, the present invention provides one kind when valve inlet side medium interrupts suddenly, valve
Valve is slowly closed downwards, and valve clack sealing surface is smaller to the impact force of sealing surface of seat, and the small one kind of long service life, noise is anti-
Impact lift check valve.
The present invention realizes by following technical solution：
The protecting against shock lift check valve includes:Valve body, valve seat, valve deck and guide sleeve, valve inner be equipped with inlet channel,
Outlet flow and lumen, outlet flow are communicated with lumen, and in inlet channel outlet end, it is close that valve seat upper end is equipped with valve seat for valve seat setting
Cover, valve deck are fixedly mounted on upper end in the middle part of valve body, and guiding set upper side is fixedly mounted on valve deck lower end, is equipped with and leads inside guide sleeve
To inner cavity, lumen is protruded into guide sleeve lower end, it is characterised in that：Spacing block is equipped with inside guide sleeve, spacing block outer circle, which is fixed on, to be led
To at internal chamber wall, spacing block is isolated into plunger shaft and pressure regulating cavity for inner cavity is oriented to, and plunger shaft exists in the top of spacing block, pressure regulating cavity
The lower section of spacing block, spacing block are equipped with centre bore, and guide sleeve top is equipped with air inlet, which communicates with plunger shaft,
The other end is communicated with outlet flow；Flap is made of flap head and flap handle, and flap head lower end surface is equipped with energy and sealing surface of seat
The valve clack sealing surface of sealing is formed, flap head upper end is protruded into pressure regulating cavity, the guiding internal chamber wall shape of flap head outer circle and guide sleeve
At upper and lower guiding, O-ring seal is equipped at the guiding internal chamber wall at the guiding position, flap handle is mounted on flap head upper end, valve
Valve handle outer circle is less than the outer circle of flap head, and flap handle upper end penetrates the centre bore of spacing block, protrudes into plunger shaft, flap handle outer circle with
The center hole wall of spacing block forms upper and lower guiding, and groove is equipped at the center hole wall, and in the groove equipped with O-shaped close
Seal；An adjustment hole perpendicular to valve clack sealing surface is equipped between the upper and lower end face of flap head, which is connected to inlet channel
With pressure regulating cavity；It is equipped with counter sink at spacing block position, the macropore of counter sink is located at aperture lower part, at the position of falling counter sink
Equipped with floating plug, floating plug lower end is equipped with floating plug tail, and floating plug tail outer circle and the macropore inner circle of counter sink form upper and lower guiding, floating plug
O-ring seal is equipped at tail outer circle, floating plug upper end is equipped with floating plug head, and floating plug head is equipped with one can form the floating of sealing with air inlet
Fill in sealing surface；Venthole is equipped with inside valve deck, venthole one end is communicated with outlet flow, and the other end is equipped with vertical release
Mouthful, spherical check ball is equipped in the upper end of the bleed outlet.
Further, the check ball is made of stainless steel material.
Further, the flap head outer circle position is equipped with positive stop lug boss, the size of the outside diameter of the positive stop lug boss
It is in the same size with guide sleeve lower end outside diameter.
The assembly method of protecting against shock lift check valve of the present invention is as follows：
1. the assembling of valve body and valve seat：Valve seat setting keeps sealing surface of seat level upward in inlet channel outlet end, uses
Welding rod is protruded into from lumen, and the position between valve seat outer circle and valve body is welded, and is welded valve seat；
2. the assembling of the parts such as valve deck and guide sleeve：Guiding set upper side is fixedly welded on valve deck lower end, and air inlet is kept to exist
Below valve deck, and on the top of guide sleeve, spherical check ball is put into outlet by this end that venthole is communicated with outlet flow
Hole adjusts the direction worked off one's feeling vent one's spleen by overturning valve deck, spherical check ball is made to enter bleed outlet upper end；
3. the assembling of the parts such as spacing block and floating plug：It is packed into O-ring seal at floating plug tail outer circle, floating plug is packed into and is isolated
The place of falling counter sink of block is fixed together floating plug head with piston tail part, and the component that spacing block and floating plug are completed fills
Enter and be oriented to inner cavity, spacing block is isolated into plunger shaft and pressure regulating cavity for inner cavity is oriented to, and plunger shaft exists in the top of spacing block, pressure regulating cavity
The lower section of spacing block keeps floating plug sealing surface that can be formed with air inlet and seals, and is packed into O in the groove of the center hole wall of spacing block
Type sealing ring is packed into O-ring seal at the guiding internal chamber wall at pressure regulating cavity position；
4. overall package：Flap is put into lumen, valve clack sealing surface and sealing surface of seat is kept to carry out plane contact, adjustment
Good flap axis is overlapped with valve seat axis, and the component that dress serial number 3 is completed slowly is mounted on valve body in such a way that guide sleeve is directed downwardly
Lumen is protruded into portion, guide sleeve lower end, and flap head and flap handle are respectively protruding into pressure regulating cavity and centre bore, valve deck are fixedly mounted on valve
Upper end in the middle part of body keeps the sealing between valve deck and valve body；
5. pressure testing：A. hydraulic pressure strength is tested：Closed valve outlet side is passed through test(ing) medium from valve body import side, delays
Slowly Strengh testing pressure is boosted to, observation valve surface has No leakage；B. pressurized seal is tested：It is passed through air from valve outlet side,
Test pressure is slowly boosted to, there is No leakage in observation valve inlet side；
6. the protecting against shock lift check valve of pass the test is dried up, outer surface japanning, storage.
The advantage of the invention is that：When valve inlet side medium interrupts suddenly, flap is slowly closed downwards, and flap is to valve
The impact force of seat is smaller, and valve clack sealing surface is hardly damaged with sealing surface of seat, and long service life, noise are small；This valve assembly side
Method is simple, conveniently, accuracy rate it is high.
Detailed description of the invention
Fig. 1 is the open state structural schematic diagram of protecting against shock lift check valve of the present invention.
Fig. 2 is the closed state structural schematic diagram of protecting against shock lift check valve of the present invention.
Specific embodiment：
According to Fig. 1, Fig. 2 it is found that protecting against shock lift check valve of the present invention includes：Valve body 1, valve seat 2, valve deck 10 and guiding
8 are covered, is equipped with inlet channel, outlet flow and lumen inside valve body 1, outlet flow is communicated with lumen, and valve seat 2 is arranged in inlet flow
Road outlet end, 2 upper end of valve seat are equipped with sealing surface of seat, and valve deck 10 is fixedly mounted on 1 middle part upper end of valve body, and 8 upper end of guide sleeve is solid
Dingan County is mounted in 10 lower end of valve deck, guiding inner cavity is equipped with inside guide sleeve 8,8 lower end of guide sleeve is protruded into lumen, set inside guide sleeve 8
There is spacing block 6,6 outer circle of spacing block is fixed at guiding internal chamber wall, and spacing block 6 is isolated into plunger shaft 9 and pressure regulation for inner cavity is oriented to
Chamber 5, plunger shaft 9 is in the top of spacing block 6, and for pressure regulating cavity 5 in the lower section of spacing block 6, spacing block 6 is equipped with centre bore, on guide sleeve 8
Portion is equipped with air inlet 14, which communicates with plunger shaft 9, and the other end is communicated with outlet flow；Flap 3 is by flap head
It is formed with flap handle, flap head lower end surface is equipped with the valve clack sealing surface that sealing can be formed with sealing surface of seat, and flap head upper end is stretched
Enter in pressure regulating cavity 5, the guiding internal chamber wall of flap head outer circle and guide sleeve 8 forms upper and lower guiding, in the guiding at the guiding position
O-ring seal 4 is equipped at cavity wall, flap handle is mounted on flap head upper end, and flap handle outer circle is less than the outer circle of flap head, flap handle
Upper end penetrates the centre bore of spacing block 6, protrudes into plunger shaft 9, and the center hole wall of flap handle outer circle and spacing block 6 is formed leads above and below
To, and O-ring seal 7 is equipped at the center hole wall；One is equipped between the upper and lower end face of flap head perpendicular to valve clack sealing surface
Adjustment hole 17, which is connected to inlet channel and pressure regulating cavity 5；It is equipped with counter sink at 6 position of spacing block, counter sink
Macropore be located at aperture lower part, the position of falling counter sink be equipped with floating plug 15,15 lower end of floating plug be equipped with floating plug tail 16, floating plug tail 16
Outer circle and the macropore inner circle of counter sink form upper and lower guiding, are equipped with O-ring seal, 15 upper end of floating plug at 16 outer circle of floating plug tail
Equipped with floating plug head 13, floating plug head 13 is equipped with the floating plug sealing surface that sealing can be formed with air inlet 14；It is set inside valve deck 10
There is venthole 12,12 one end of venthole is communicated with outlet flow, and the other end is equipped with vertical bleed outlet, in the upper end of the bleed outlet
Equipped with spherical check ball 11.
The assembly method of protecting against shock lift check valve of the present invention is as follows：
1. the assembling of valve body 1 and valve seat 2：The setting of valve seat 2 keeps sealing surface of seat level court in inlet channel outlet end
On, it is protruded into welding rod from lumen, the position between 2 outer circle of valve seat and valve body 1 is welded, and valve seat 2 is welded；
2. the assembling of the parts such as valve deck 10 and guide sleeve 8：8 upper end of guide sleeve is fixedly welded on 10 lower end of valve deck, keep into
Stomata is below valve deck 10, and at the top of guide sleeve 8, this end that spherical check ball is communicated by venthole with outlet flow
It is put into venthole, the direction worked off one's feeling vent one's spleen is adjusted by overturning valve deck 10, spherical check ball is made to enter bleed outlet upper end；
3. the assembling of the parts such as spacing block 6 and floating plug 15：O-ring seal is packed at 16 outer circle of floating plug tail, floating plug 15
It is packed into the place of falling counter sink of spacing block 6, floating plug head 13 and piston tail part 16 are fixed together, spacing block 6 and floating plug 13
The component being completed is packed into guiding inner cavity, and spacing block 6 is isolated into plunger shaft 9 and pressure regulating cavity 5 for inner cavity is oriented to, and plunger shaft 9 exists
The top of spacing block 6, pressure regulating cavity 5 are kept floating plug sealing surface that can be formed with air inlet 14 and sealed in the lower section of spacing block 6, every
The groove of center hole wall from block 6 is packed into O-ring seal, and O-shaped sealing is packed at the guiding internal chamber wall at 5 position of pressure regulating cavity
Circle；
4. overall package：Flap 3 is put into lumen, keeps valve clack sealing surface and sealing surface of seat to carry out plane contact, adjusts
Whole good flap axis is overlapped with valve seat axis, and the component that dress serial number 3 is completed slowly is mounted in valve in such a way that guide sleeve 8 is directed downwardly
Lumen is protruded into 1 top of body, 8 lower end of guide sleeve, and flap head and flap handle are respectively protruding into pressure regulating cavity 5 and centre bore, valve deck fixed
It is mounted on 1 middle part upper end of valve body, keeps the sealing between valve deck 10 and valve body 1；
5. pressure testing：A. hydraulic pressure strength is tested：1 outlet side of closed valve is passed through test(ing) medium from 1 inlet side of valve body,
Strengh testing pressure is slowly boosted to, observation valve surface has No leakage；B. pressurized seal is tested：Sky is passed through from 1 outlet side of valve body
Gas, slowly boosts to test pressure, and there is No leakage in observation valve inlet side；
6. the protecting against shock lift check valve of pass the test is dried up, outer surface japanning, storage.
When medium enters from the valve inlet channel, medium pushes flap to move up, while medium enters from adjustment hole
To pressure regulating cavity, medium pushes floating plug to move up, and floating plug sealing surface seals air inlet, the certain media in plunger shaft from bleed outlet, then
It releases by venthole to outlet flow.
When sudden shutting off the medium in the valve inlet channel, flap moves down under the action of from gravity, due to work
Fill in it is intracavitary enter at this time without medium, plunger shaft forms certain negative pressure, and flap decrease speed slows down, at this time Jie in pressure regulating cavity
Matter is slowly flowed downward out by adjustment hole, and floating plug moves down under the action of from gravity, and floating plug head moves down, floating plug sealing
Air inlet is opened in face, and the medium in outlet flow enters plunger shaft by air inlet, and plunger shaft forms certain pressure, piston
Intracavitary medium further pushes flap to move down, and final valve clack sealing surface compresses sealing surface of seat, to form sealing, valve
It closes.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of protecting against shock lift check valve, including:Valve body, valve seat, valve deck and guide sleeve, valve inner are equipped with inlet flow
Road, outlet flow and lumen, outlet flow are communicated with lumen, and valve seat setting is equipped with valve in inlet channel outlet end, valve seat upper end
Seat sealing surface, valve deck are fixedly mounted on upper end in the middle part of valve body, and guiding set upper side is fixedly mounted on valve deck lower end, sets inside guide sleeve
There is guiding inner cavity, lumen is protruded into guide sleeve lower end, it is characterised in that：Spacing block is equipped with inside guide sleeve, spacing block outer circle is fixed
At guiding internal chamber wall, spacing block is isolated into plunger shaft and pressure regulating cavity for inner cavity is oriented to, and plunger shaft is in the top of spacing block, pressure regulation
For chamber in the lower section of spacing block, spacing block is equipped with centre bore, and guide sleeve top is equipped with air inlet, the air inlet one end and plunger shaft phase
Logical, the other end is communicated with outlet flow；Flap is made of flap head and flap handle, and flap head lower end surface is equipped with energy and valve base sealing
Face forms the valve clack sealing surface of sealing, and flap head upper end is protruded into pressure regulating cavity, the guiding internal chamber wall of flap head outer circle and guide sleeve
Upper and lower guiding is formed, O-ring seal is equipped at the guiding internal chamber wall at the guiding position, flap handle is mounted on flap head upper end,
Flap handle outer circle is less than the outer circle of flap head, and flap handle upper end penetrates the centre bore of spacing block, protrudes into plunger shaft, flap handle outer circle
Upper and lower guiding is formed with the center hole wall of spacing block, and is equipped with groove at the center hole wall, and in the groove equipped with O-shaped
Sealing ring；An adjustment hole perpendicular to valve clack sealing surface is equipped between the upper and lower end face of flap head, which is connected to inlet flow
Road and pressure regulating cavity；It is equipped with counter sink at spacing block position, the macropore of counter sink is located at aperture lower part, falls counterbore portion at this
Position is equipped with floating plug, and floating plug lower end is equipped with floating plug tail, and floating plug tail outer circle and the macropore inner circle of counter sink form upper and lower guiding, float
It fills in and is equipped with O-ring seal at tail outer circle, floating plug upper end is equipped with floating plug head, and floating plug head, which is equipped with one, to form sealing with air inlet
Floating plug sealing surface；Venthole is equipped with inside valve deck, venthole one end is communicated with outlet flow, and the other end is equipped with vertical release
Mouthful, spherical check ball is equipped in the upper end of the bleed outlet.
2. a kind of protecting against shock lift check valve according to claim 1, it is characterised in that：The check ball is by stainless steel
Material is made.
3. a kind of protecting against shock lift check valve according to claim 1, it is characterised in that：The flap head outer circle position
Equipped with positive stop lug boss, the size of the outside diameter of the positive stop lug boss is in the same size with guide sleeve lower end outside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218470.9A CN106870779B (en) | 2017-04-05 | 2017-04-05 | Protecting against shock lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218470.9A CN106870779B (en) | 2017-04-05 | 2017-04-05 | Protecting against shock lift check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106870779A CN106870779A (en) | 2017-06-20 |
| CN106870779B true CN106870779B (en) | 2018-11-23 |
Family
ID=59160912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710218470.9A Active CN106870779B (en) | 2017-04-05 | 2017-04-05 | Protecting against shock lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870779B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296247B (en) * | 2019-07-19 | 2020-12-25 | 浙江青合工业科技有限公司 | Double-seal regulating valve |
| CN112178246A (en) * | 2020-09-25 | 2021-01-05 | 任林赟 | Lifting check valve for oil field oil transportation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760444A2 (en) * | 1995-07-25 | 1997-03-05 | Hansa Metallwerke Ag | Sanitary armature, particularly thermostatic valve |
| KR20090005539U (en) * | 2009-05-19 | 2009-06-08 | 주식회사 코밸 | Valve for preventing backflow |
| CN202659991U (en) * | 2012-05-31 | 2013-01-09 | 福建海洋铜业有限公司 | Slow-closing check valve |
| CN103899805A (en) * | 2014-04-23 | 2014-07-02 | 刘工勤 | Micro-force switch valve with backflow stopping function |
| CN205745469U (en) * | 2016-06-21 | 2016-11-30 | 浙江精杰实业有限公司 | A kind of tilting disc check valve |
-
2017
- 2017-04-05 CN CN201710218470.9A patent/CN106870779B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0760444A2 (en) * | 1995-07-25 | 1997-03-05 | Hansa Metallwerke Ag | Sanitary armature, particularly thermostatic valve |
| KR20090005539U (en) * | 2009-05-19 | 2009-06-08 | 주식회사 코밸 | Valve for preventing backflow |
| CN202659991U (en) * | 2012-05-31 | 2013-01-09 | 福建海洋铜业有限公司 | Slow-closing check valve |
| CN103899805A (en) * | 2014-04-23 | 2014-07-02 | 刘工勤 | Micro-force switch valve with backflow stopping function |
| CN205745469U (en) * | 2016-06-21 | 2016-11-30 | 浙江精杰实业有限公司 | A kind of tilting disc check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106870779A (en) | 2017-06-20 |
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Effective date of registration: 20201223 Address after: 224400 No. 21 Huashan Road, Funing Economic Development Zone, Yancheng City, Jiangsu Province (A) Patentee after: TEFA JIANGSU LIUTI FLUID MACHINERY MANUFACTURING Co.,Ltd. Address before: 325115 Lixi Village, Yantou Town, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: Li Xiangqing |
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Effective date of registration: 20221130 Address after: 224511 Intersection of Hengyi Road and Zong'er Road, Binhai Modern Agricultural Industrial Park, Yancheng City, Jiangsu Province Patentee after: JIANGSU JINFUCUN PETROLEUM EQUIPMENT Co.,Ltd. Address before: 224400 No. 21 Huashan Road, Funing Economic Development Zone, Yancheng City, Jiangsu Province (A) Patentee before: TEFA JIANGSU LIUTI FLUID MACHINERY MANUFACTURING CO.,LTD. |
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| TR01 | Transfer of patent right |