CN105003694B - Protecting against shock check-valves - Google Patents
Protecting against shock check-valves Download PDFInfo
- Publication number
- CN105003694B CN105003694B CN201510418815.6A CN201510418815A CN105003694B CN 105003694 B CN105003694 B CN 105003694B CN 201510418815 A CN201510418815 A CN 201510418815A CN 105003694 B CN105003694 B CN 105003694B
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- Prior art keywords
- flap
- hole
- valve
- guide sleeve
- lumen
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Classifications
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- 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
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of protecting against shock check-valves, including valve body, valve seat, flap, elastic component and valve deck, flap is arranged up and down on the valve seat, elastic component, which is sleeved on, makes flap have the trend being closed to valve seat on flap, guide sleeve and fixed plug are fixedly installed above the lumen of valve body, fixed plug is positioned at the centre of guide sleeve and extends downwardly, and the top of flap can slide up and down to cooperation in guide sleeve, and guide sleeve is equipped with empty avoiding space in the top of flap；The piston hole being inserted into for fixed plug is offered on flap, the sidewall bottom of piston hole offers the through-hole being connected to lumen, the buffer structure hole of connection piston hole and lumen is further opened with above through-hole, the length direction in buffer structure hole vertically extends, and buffer structure hole has the epimere and hypomere being connected.The present invention controls the movement velocity of flap by fixed plug and the relative position relation in buffer structure hole, generates impact force with valve seat when preventing flap from closing, extends the service life of valve.
Description
Technical field
The present invention relates to a kind of lift check valve for oil exploitation pipeline, especially one kind can prevent flap because more
Secondary Shocks and the protecting against shock check-valves for leading to sealing face damage.
Background technology
Check-valves refers to being 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, reflux valve and counterbalance valve.Check-valves belongs to a kind of automatic valve, and main function is to prevent medium from falling
It flows, prevent pump and drive motor reversion and vessel media from releasing.It is divided by structure, check-valves, which can be divided into lift, to be stopped
Return three kinds of valve, swing check valve and butterfly swing check valve.Lift check valve can be divided into vertical and two kinds horizontal again.
Be mainly horizontal check valve for the check-valves in oil exploitation pipeline, mainly have valve body, valve seat, flap and
There is on valve body valve deck feed pathway, lumen and liquid outlet channel, feed pathway to be connected to liquid outlet channel by lumen, and valve seat is solid
It is scheduled in lumen, flap can be arranged up and down to be closed in lumen and by elastic component abutting on valve seat.When
High-pressure medium is after feed pathway entrance, and the gravity of elastic force and flap that elastic component is overcome under the pressure of medium is by flap top
It opens, flap and valve seat is made to open, to be flowed out from liquid outlet channel after so that medium is passed through lumen.After pressure medium reduces, flap exists
The lower reset of falling again of elastic component effect is closed with valve seat, prevents medium back flow.
Traditional horizontal check valve all has larger impact force when flap is closed every time, so as to cause flap lower part
Sealing surface（Typically circular conical surface）Frequent impact and cause to damage, cause valve leaks.For example, Chinese utility model patent
A kind of check-valves disclosed in CN204284543U, although provided with the valve rod that is limited to flap, when flap is closed
Still larger impact is generated under the action of spring, the sealing surface of flap does not take safeguard measure appropriate yet, seals face
Fragile, this check-valves service life is not grown commonly, and scene is replaced and safeguard frequent.
Invention content
In view of the defect of the prior art, the object of the present invention is to provide a kind of opening and closing to flap to have buffering
The protecting against shock check-valves of effect avoids flap from clashing with valve seat and sealing surface is caused to damage to protect the sealing surface of flap
And valve leaks, extend check-valves service life, reduces on-site maintenance cost.
In order to achieve the above object, the present invention uses following technical scheme：
A kind of protecting against shock check-valves, including valve body, valve seat, flap, elastic component and valve deck, the valve body, which has, to be connected
Feed pathway, lumen and liquid outlet channel, the valve base sealing are connected in the lumen, and the flap is arranged up and down
On the valve seat, the elastic component, which is sleeved on, makes the flap have the trend being closed to the valve seat, feature on the flap
It is：
Be fixedly installed above the lumen guide sleeve and it is fixed fill in, the fixed plug positioned at the centre of the guide sleeve and to
The top of lower extension, the flap can slide up and down to cooperation in the guide sleeve, and the guide sleeve is set above the flap
There is empty avoiding space；The piston hole being inserted into for the fixed plug is offered on the flap, the sidewall bottom of the piston hole opens up
There is the through-hole being connected to the lumen, the buffering for being connected to the piston hole and the lumen is further opened with above the through-hole
The length direction of structure hole, the buffer structure hole vertically extends, and the buffer structure hole has the epimere being connected
And hypomere；
The flap has closed position and open position, and at closed position, the flap is closed with the valve seat, institute
The epimere of buffer structure hole length is completely covered in the side for stating the lower end of fixed plug；The valve in open position
Valve is opened with the valve seat, and the buffer structure hole is connected to the empty avoiding space and the lumen.
Preferably, the lower end of the fixed plug has the seal head that the inner wall with the piston hole is slidingly fitted, described
The top of fixed plug has the main part that outer diameter is less than the seal head, the main part of the fixed plug and the piston hole
Between there is the gap that is connected to the empty avoiding space；For the flap at closed position, the outer circumference surface of the seal head is complete
The epimere of buffer structure hole length described in all standing.
Preferably, the buffer structure hole is strip-shaped hole, and the width of the epimere of the strip-shaped hole circumferentially is less than hypomere.
It is highly preferred that the length of the outer circumference surface of the seal head along the vertical direction is more than the epimere along the vertical direction
Length.
Preferably, the valve bonnet seal is connected on the valve body and covers the lumen, and the guide sleeve passes through screw
It is fixed on the lower end of the valve deck.
It is highly preferred that having the groove for installing the guide sleeve on the valve deck, there is ear on the peripheral surface of the guide sleeve,
The ear is fixedly connected with the valve deck by screw.
It is further preferred that there is round T connector, the diameter of the circle T connector to be more than institute for the upper end of the fixed plug
The internal diameter of guide sleeve is stated, the mounting groove with the round T connector cooperation is offered on the valve deck, the guide sleeve fills in the fixation
It is pressed in the mounting groove.
Wherein, the valve seat is threaded on the lumen, and O-ring is additionally provided between the valve seat and the lumen.
In one embodiment, it is equipped between the outer circumference surface on the top of the flap and the inner peripheral surface of the guide sleeve
Sealed connecting component.
Wherein, the sealed connecting component is O-ring.
The operation principle of protecting against shock check-valves of the present invention is：Since connection guide sleeve is played in the buffer structure hole opened up on flap
The effect in interior empty avoiding space and lumen, during flap opens and closes, the medium in lumen can be kept away in guide sleeve
Absolutely empty flows between lumen；When flap is closed to during being closed completely with valve seat, the peripheral surface of fixed plug lower end
The gradually epimere in covering buffer structure hole, has gradually cut off the connected relation in the empty avoiding space and lumen in guide sleeve so that guide sleeve
Pressure medium in interior empty avoiding space is gradually reduced to form low pressure seal area, and the speed moved downward when flap being made to close is rapid
Reduce, to make flap realize soft landing and the sealing surface of flap is made slowly to be bonded with the sealing surface of valve seat, avoids because of flap
Impact force between valve seat causes sealing surface to damage and generate the defect revealed.
Under original state, flap is in the closed position, and after medium enters valve body by feed pathway, flap is in upward Jie
It is moved upwards along guide sleeve and fixed plug under the effect of matter pressure, valve is opened rapidly, and when fully opening, elastic component can prevent
Flap continues high speed and moves upwards, and prevents flap from clashing with fixed plug；After pressure medium reduces, flap is in downward medium
It is moved downward rapidly along guide sleeve and fixed plug under pressure and elastic component effect, and due to offering buffer structure hole on flap, when
When flap moves down into certain position, the lower end for being gradually fixed plug with the buffer structure hole on flap covers, and fixes beyond the Great Wall
The amount that the medium at end enters is gradually reduced, and to reach the speed that control flap moves down, flap is avoided to clash with valve seat, real
Existing soft landing, protects the purpose of sealing surface.
Compared to the prior art, protecting against shock check-valves of the invention is utilized using the design of fixed plug and buffer structure hole
The relative position relation of the two controls movement velocity when flap is closed, and can avoid between flap and valve seat fierce hit
Hit, the sealing surface being effectively protected between flap and valve seat extends valve service life, avoid live frequently repair or
It safeguards, it is cost-effective.
Description of the drawings
Fig. 1 is the longitudinal profile schematic diagram of protecting against shock check-valves of the present invention.
Fig. 2 is the longitudinal profile schematic diagram of the flap in protecting against shock check-valves of the present invention.
Fig. 3 is the diagrammatic cross-section that the flap in the present invention is closed.
Fig. 4 is in the diagrammatic cross-section of half-open position for the flap in the present invention.
Fig. 5 is in the diagrammatic cross-section of fully open state for the flap in the present invention.
In attached drawing：
1- valve seats, 2- baffle rings, 3-O type circles, 4- elastic components, 5- flaps, 6- screws, 7- valve bodies, 8- guide sleeves, 9- fix plug,
10- valve decks, 11- sealing rings, 12- nuts, 13- studs, 14- lifting lugs；
51- piston holes, 52- through-holes, 53- buffer structures hole, the epimere in 531- buffer structures hole, 532- buffer structures hole
Hypomere, 81- empty avoidings space, 91- seal heads, 92- fix the main part of plug, the gaps 93-.
Specific implementation mode
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
It please refers to Fig.1 to 5, a kind of protecting against shock check-valves, including valve body 7, valve seat 1, flap 5, elastic component 4 and valve deck 10.
Valve body 7 has feed pathway 71, lumen 72 and the liquid outlet channel 73 being connected, during valve seat 1 is threadedly attached in
It is tightly connected in chamber 72 and by baffle ring 2 and O-ring.
Flap 5 is arranged up and down on valve seat 1, and flap 5 opens and closes lumen, bullet by coordinating with valve seat 1
Property part 4 be sleeved on and make flap 5 that there is the trend that is closed to valve seat 1 on flap 5.Elastic component 4 is spring in the present embodiment.
Valve deck 10 is fixed on by nut 12 and stud 13 on valve body 7, and the closing of valve deck 10 is covered on lumen 72, valve
Sealing ring 11 is equipped between lid 10 and valve body 7.
The top of lumen 72 is fixedly installed guide sleeve 8 and fixed plug 9, has the groove of mounting guide sleeve 8, guide sleeve on valve deck 10
There is ear, the ear to be fixedly connected by screw 6 with valve deck 10 on 8 peripheral surface.The upper end of fixed plug 9 has circle T
The diameter of type head, the circle T connector is more than the internal diameter of guide sleeve 8, and the peace with the round T connector cooperation is offered on valve deck 10
Fixed plug 9 is pressed in the mounting groove by tankage, guide sleeve 8.Fixed plug 9 is located at the centre of guide sleeve 8 and extends downwardly, flap 5
Top can slide up and down to cooperation in guide sleeve 8, guide sleeve 8 the top of flap 5 be equipped with empty avoiding space 81.
The piston hole 51 being inserted into for the fixed plug is offered on flap 5, the sidewall bottom of piston hole 51 is offered in
The through-hole 52 that chamber 72 is connected to, through-hole 52 is for circular hole and radially to wearing flap 5.It is further opened with connection piston in the top of through-hole 52
The length direction in the buffer structure hole 53 in hole 51 and lumen 72, buffer structure hole 53 vertically extends, buffer structure hole 53
With the epimere 531 and hypomere 532 being connected.There is the sealing surface coordinated with valve seat 1 on the outer circumference surface of the lower part of flap 5
54, which is circular conical surface.
As in Figure 3-5, the lower end of fixed plug 9 has the seal head 91 that the inner wall with piston hole 51 is slidingly fitted, Gu
Surely the top of plug 9 has the main part 92 that outer diameter is less than seal head 91, between the main part 92 and piston hole 51 of fixed plug 9
With the gap 93 being connected to empty avoiding space 81.In the present embodiment, buffer structure hole 53 is the strip-shaped hole of two-part, strip-shaped hole 53
The width circumferentially of epimere 531 be less than hypomere 532.In other embodiments, buffer structure hole 53 can also be used from the bottom up
Width is by big gradually smaller structure.The length of the outer circumference surface of seal head 91 along the vertical direction is more than the upper of buffer structure hole 53
The length of section 531 along the vertical direction.In this way when flap 5 is closed, seal head 91 can be complete by the epimere 531 in buffer structure hole 53
All standing and Cutting clearance 93 are contacted with lumen, and gap 93 and empty avoiding space 81 is made to form sealing higher-pressure region.
Flap 5 has closed position and open position.Flap 5 fills in 9 with fixation when being closed for valve such as Fig. 3
Diagrammatic cross-section, the flap 5 at closed position of flap 5 are closed with valve seat 1, the excircle of the seal head 91 of the lower end of fixed plug 9
The epimere 531 of 53 length of buffer structure hole is completely covered in face.As shown in Figures 4 and 5, flap is in half-open position and opens completely
When opening state, flap is in the open position, and flap 5 is opened with valve seat 1 at this time, and buffer structure hole 53 is connected to empty avoiding space 81 in
Chamber 72, medium can be flowed into from lumen 72 by buffer structure hole 53 and gap 93 in the empty avoiding space 81 of guide sleeve 8.
In order to make the empty avoiding space 81 of the top of guide sleeve 8 that there is preferable leakproofness, the outer circumference surface on the top of flap 5 and lead
Sealed connecting component is equipped between the inner peripheral surface of set 8, such as the present embodiment is O-ring（Do not show in figure）.
Under original state, flap 5 is in the closed position under the elastic force effect of elastic component 4, as shown in figure 3, medium passes through
After feed pathway 71 enters valve body 7, flap 5 moves upwards under upward pressure medium effect along guide sleeve 8 and fixed plug 9, valve
Door is rapid to be opened, and when fully opening, 9 lower ends of fixed plug form relatively high pressure seal area, as shown in Figures 4 and 5, prevent valve
Valve 5 continues high speed and moves upwards, and prevents flap 5 from clashing with fixed plug 9.After pressure medium reduces, flap 5 is downward
Pressure medium and elastic component 4 move downward rapidly under acting on along guide sleeve 8 and fixed plug 9, and due to offering buffering knot on flap 5
Structure hole 53 is gradually fixed plug when flap 5 moves down into certain position with the epimere 531 in the buffer structure hole 53 on flap 5
The seal head 91 of 9 lower end covers, and the speed that the medium of 9 upper ends of fixed plug enters is gradually reduced, to reach under control flap 5
The speed of shifting avoids flap 5 from clashing with valve seat 1, realizes soft landing, protects the sealing of the sealing surface 54 and valve seat 1 of flap 5
The purpose in face.
The present embodiment plays the empty avoiding space 81 in connection guide sleeve 8 in due to the buffer structure hole 53 opened up on flap 5
The effect of chamber 72, when flap 5 is closed to during being closed completely with valve seat 1, the peripheral surface of the seal head 91 of 9 lower ends of fixed plug
Gradually the epimere 531 in covering buffer structure hole 53, the speed that medium is flowed out from the empty avoiding space 81 in guide sleeve 8 are reduced rapidly,
Pressure medium in empty avoiding space 81, which gradually increases, forms high pressure sealing area, to which the speed for making flap 5 move downward subtracts rapidly
It is small, soft landing and the sealing surface 54 of flap 5 is made slowly to be bonded with the sealing surface of valve seat to make flap 5 realize, prevent flap 5 and
Large impact power between valve seat 1 causes sealing surface to damage and generate leakage.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of protecting against shock check-valves, including valve body, valve seat, flap, elastic component and valve deck, the valve body have be connected into
Liquid channel, lumen and liquid outlet channel, the valve base sealing are connected in the lumen, and the flap is arranged up and down in institute
It states on valve seat, the elastic component, which is sleeved on, makes the flap that there is the trend being closed to the valve seat, feature to exist on the flap
In：
Be fixedly installed above the lumen guide sleeve and it is fixed fill in, the fixed plug is positioned at the centre of the guide sleeve and to downward
It stretches, the top of the flap can slide up and down to cooperation in the guide sleeve, and the guide sleeve is equipped in the top of the flap and keeps away
Absolutely empty；Offer the piston hole being inserted into for the fixed plug on the flap, the sidewall bottom of the piston hole offer with
The through-hole of the lumen connection, is further opened with the buffer structure for being connected to the piston hole and the lumen above the through-hole
The length direction in hole, the buffer structure hole vertically extends, and the buffer structure hole has the epimere being connected under
Section；
The flap has closed position and open position, and at closed position, the flap is closed with the valve seat, described solid
Surely the epimere of buffer structure hole length is completely covered in the side for the lower end filled in；In open position the flap with
The valve seat is opened, and the buffer structure hole is connected to the empty avoiding space and the lumen；
The lower end of the fixed plug has the seal head that the inner wall with the piston hole is slidingly fitted, the top of the fixed plug
It is less than the main part of the seal head with outer diameter, has and institute between the main part and the piston hole of the fixed plug
State the gap of empty avoiding space connection；For the flap at closed position, described delay is completely covered in the outer circumference surface of the seal head
Rush the epimere of structure hole length；The buffer structure hole is strip-shaped hole, and the width of the epimere of the strip-shaped hole circumferentially is small
In hypomere；The length of the outer circumference surface of the seal head along the vertical direction is more than the length of the epimere along the vertical direction；
There is the groove for installing the guide sleeve on the valve deck, there is ear, the ear and institute on the peripheral surface of the guide sleeve
Valve deck is stated to be fixedly connected by screw；There is round T connector, the diameter of the circle T connector to be more than for the upper end of the fixed plug
The internal diameter of the guide sleeve, offers the mounting groove with the round T connector cooperation on the valve deck, and the guide sleeve is by the fixation
Plug is pressed in the mounting groove.
2. a kind of protecting against shock check-valves according to claim 1, it is characterised in that：The valve bonnet seal is connected to the valve
On body and the lumen is covered, the guide sleeve is fixed by screws in the lower end of the valve deck.
3. a kind of protecting against shock check-valves according to claim 1, it is characterised in that：The valve seat be threaded in it is described in
On chamber, O-ring is additionally provided between the valve seat and the lumen.
4. a kind of protecting against shock check-valves according to claim 1, it is characterised in that：The outer circumference surface on the top of the flap
Sealed connecting component is equipped between the inner peripheral surface of the guide sleeve.
5. a kind of protecting against shock check-valves according to claim 4, it is characterised in that：The sealed connecting component is O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418815.6A CN105003694B (en) | 2015-07-17 | 2015-07-17 | Protecting against shock check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418815.6A CN105003694B (en) | 2015-07-17 | 2015-07-17 | Protecting against shock check-valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105003694A CN105003694A (en) | 2015-10-28 |
| CN105003694B true CN105003694B (en) | 2018-11-09 |
Family
ID=54376482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510418815.6A Active CN105003694B (en) | 2015-07-17 | 2015-07-17 | Protecting against shock check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105003694B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161089B (en) * | 2020-09-20 | 2023-05-23 | 浙江东和阀门制造有限公司 | Waterproof hammer slow-closing check valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2827189A1 (en) * | 1978-06-21 | 1980-01-31 | Motoren Turbinen Union | Mushroom-type gas non-return valve - has damping cushion with adjustable volume and is closed by spring against flange at end of stem |
| ITMI20041549A1 (en) * | 2004-07-29 | 2004-10-29 | Caleffi Spa | AUTOMATIC FLOW STABILIZER VALVE |
| CN201277351Y (en) * | 2008-09-10 | 2009-07-22 | 兰州理工大学 | Non-return combined valve equipped with bypass ball valve |
| US8267666B2 (en) * | 2009-08-06 | 2012-09-18 | Campbell Hausfeld/Scott Fetzer Company | Air flow control apparatus |
| CN202418744U (en) * | 2011-12-21 | 2012-09-05 | 南京恒达压缩机有限公司 | Gas check valve |
| CN203374901U (en) * | 2013-07-05 | 2014-01-01 | 天津百利展发集团有限公司 | Novel check valve |
| CN203453558U (en) * | 2013-09-17 | 2014-02-26 | 浙江石化阀门有限公司 | Axial flow type check valve |
| CN204878888U (en) * | 2015-07-17 | 2015-12-16 | 纽威石油设备（苏州）有限公司 | Protecting against shock check valve |
-
2015
- 2015-07-17 CN CN201510418815.6A patent/CN105003694B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105003694A (en) | 2015-10-28 |
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