CN203394742U - Inclined plate check valve - Google Patents
Inclined plate check valve Download PDFInfo
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- CN203394742U CN203394742U CN201320416011.9U CN201320416011U CN203394742U CN 203394742 U CN203394742 U CN 203394742U CN 201320416011 U CN201320416011 U CN 201320416011U CN 203394742 U CN203394742 U CN 203394742U
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Abstract
The utility model discloses an inclined plate check valve, which comprises a left valve body (1), a right valve body (2), a large valve plate (3), a small valve plate (3) and a diaphragm control component (5), wherein the left valve body (1) and the right valve body (2) are jointed into a whole through an inclined opening; the upper part of the inclined opening is inclined towards the right valve body (2); the diaphragm control component (5) is arranged on the left valve body (1); the large valve plate (3) is arranged along the inclined opening, is positioned in a valve cavity formed by the left valve body (1) and the right valve body (2), and is suspended on a shaft hole of the left valve body (1) through a valve shaft (6); the small valve plate (4) is connected with the diaphragm control component (5), and is arranged at a slowly closed valve port of the large valve plate (3) through a small valve plate pin shaft (7). According to the inclined plate check valve, a two-stage valve closing process of quickly closing the large valve plate and slowly closing the small valve plate on a discharging hole of the large valve plate in a time-adjustable way can be implemented, and the aims of reducing the backflow of a water body and eliminating pump starting and stopping water hammer are fulfilled.
Description
Technical field
The utility model relates to safety check technical field, especially, relates to a kind of diaphragm type slide block that is arranged on pump outlet and controls tilt-disc check valve.
Background technique
Safety check is to be arranged in pipeline, to make medium directional flow and the member of unlikely refluence is more and more widely used in all kinds of pipe networks.At present, being arranged on pump outlet can play and not need additional other devices automatically to realize to close lock starts and two stages closed safety check structurally with in use to have a lot of problems:
1. the little valve plate of Slow Close (or claiming Slow Close cam) adopts the hinge (or carrier bar) with chute to be connected with valve rod, there is free travel, valve rod can not be controlled the position of the little valve plate of Slow Close completely, in valve running, the little valve plate of Slow Close is in uncontrolled state, can be subject to current disturbance and swing, increased flow resistance and cannot reflect to the external world its aperture state: when small flow or little pressure working condition, little valve plate is not when fully open position, when large valve plate speed is closed, the little valve plate of Slow Close is because existing free travel also can close in speed under Action of Gravity Field, thereby cause the Slow Close stage form of two-stage pass valve illusory.
2. the design of the bias of large valve plate is unreasonable, through center of gravity, do not check, large valve plate is closed completely need be by counter-flow water, cause closing valve and occur collision phenomenon, reflux flow is large, and water pump reversing time is long, and reversion rotating speed is high, there is potential safety hazard, and can not make metal hard-sealing form because sealing pair exists collision impact phenomenon.
3. after whole valve closing, valve rod is as maximum application of force thing, and its suffered maximum support reaction and valve rod axis has angle, and makes valve rod be subject to radially moment of flexure, and valve rod buckling phenomenon squeeze and destroy stem guiding lining easily occur, and causes valve rod to lose efficacy.
4. the connection component of the little valve plate of Slow Close (or claiming Slow Close cam) adopt the structure anticreeps such as locking nut, cotter pin, because being subject to current disturbance, it swings, the washed away phenomenon that often occurs that cotter pin is cut off, locking nut gets loose, whole Slow Close cam comes off, causes Slow Close hole not close.
5. the profile of large valve plate does not meet the drops airflow design of low flow resistance, and little valve plate exists free travel to occur swinging because of current disturbance, increases operation damage by water, is non-band energy product.
6. adopt direct current type structure, drag losses is large.
Therefore, the diaphragm of development of new control slide block type tilt-disc check valve has been technical problem urgently to be resolved hurrily.
Model utility content
The utility model object is to provide diaphragm to control slide block type tilt-disc check valve, loses efficacy, corrects irrational eccentric design, and stopped Slow Close part and get loose, eliminate and close valve and impact, reduce flow resistance and damage by water, prevent the technical problem of oil leaking pollution environment etc. to solve two-stage Slow Close.
For achieving the above object, according to Yi Ge of the present utility model aspect, tilt-disc check valve is provided, comprise left valve barrel, right valve barrel, large valve plate, little valve plate and diaphragm control unit, between left valve barrel and right valve barrel, by angle, dock and be integrated, angle true dip direction is that top tilts to right valve barrel direction, diaphragm control unit is arranged on left valve barrel, large valve plate is arranged along angle, in the valve pocket of large valve plate in left valve barrel and right valve barrel formation, large valve plate is suspended on the axis hole of left valve barrel by valve shaft, little valve plate is connected with diaphragm control unit, little valve plate is arranged on the Slow Close valve port place of large valve plate by little valve plate bearing pin.
Further, the angle of angle or large valve plate and horizontal plane is 50 °～65 °.
Further, in diaphragm control unit, be provided with valve rod, valve rod is connected with connecting rod and/or slide block, between diaphragm control unit and little valve plate, by connecting rod and/or slide block, is connected.
Further, valve shaft is symmetricly set on large valve plate both sides, and valve shaft and valve rod fitting surface are provided with the bearing that plays connection function while opening and closing for large valve plate; The end face of valve shaft is provided with thrust bearing; Bearing and thrust bearing are self oiling bearing.
Further, the keep right outer surface of a side of valve body of large valve plate is provided with the fusiform depressed part of indent; Large valve plate is also provided with balancing weight; Little valve plate plate face area is the 3%-10% of large valve plate plate face area.
Further, left valve barrel and right valve barrel between be provided with tilting valve seat, on large valve plate, be provided with valve plate seal ring, valve plate seal ring and tilting valve seat form a pair of large valve plate sealing pair; The sealing configuration that large valve plate sealing pair adopts sphere to contact with the conical surface seals.
Further, on the angle of left valve barrel and right valve barrel, all with oblique flange, tilting valve seat is held between the oblique flange of left valve barrel and the oblique flange of right valve barrel, and tilting valve seat is detachable block or non-removable integral component.
Further, tilt-disc check valve bottom is provided with spare interface, and capping or damper are installed on spare interface.
Further, be connected with opening indicator device on valve shaft, opening indicator device comprises aperture locating column, aperture indicating arm, aperture pointer and aperture label, and aperture locating column is arranged on the position that valve shaft is connected with large valve plate; Aperture indicating arm is arranged in the valve shaft of hollow; Aperture indicating arm one end connects aperture locating column, and the other end exposes valve shaft and through end cap, through on the aperture indicating arm of end cap, aperture pointer is housed, and aperture pointer is indicated on aperture label; Or device for signalling is also installed on opening indicator device.
Further, diaphragm control unit comprises diaphragm seat, elastomer diaphragm and valve gap, take elastomer diaphragm as separating surface, diaphragm epicoele and diaphragm cavity of resorption two-part of the chamber of diaphragm seat and valve gap composition being divided into not water flowing up and down, diaphragm epicoele is communicated with valve export by upper bypass tube, and diaphragm cavity of resorption is communicated with valve inlet by lower bypass tube; Diaphragm control unit also comprises valve lever bushing, valve rod and diaphragm pressing plate, diaphragm pressing plate is close on elastomer diaphragm, valve lever bushing is fixed on diaphragm seat, valve rod top through elastomer diaphragm and diaphragm pressing plate and be fixed on elastomer diaphragm and composite part that diaphragm pressing plate forms on, valve rod middle part is enclosed within valve lever bushing, and valve rod lower end is connected on little valve plate; Valve rod lower end is provided with slide block and/or connecting rod; Between valve rod and little valve plate, by connecting rod, be connected, or be also provided with chute on little valve plate, between valve rod and little valve plate, by slide block, coordinate and be connected with chute, or between valve rod and little valve plate, the assembly parts cooperation by slide block and connecting rod is connected.
The utlity model has following beneficial effect:
A, speed are closed the double valve plates design that large valve plate adds the little valve plate of Slow Close, and while driving valve, first slow opening opened soon afterwards, and slow open adjustable; While closing valve, large valve plate is under the transient equiliblium of eccentric weight moment and forward residual current moment of thrust, and complete shut-down when forward current approach zero flow velocity cuts off 95% flow area; The little valve plate adjustable slow-closure of Slow Close, boosts and carries out off-load and release the refluence that may exist, and has the function that optimum deflate opens pump and pump-stopping water hammer.
B, diaphragm epicoele have the effect that water hammer receives.
C, speed is closed large valve plate and is adopted center of gravity Check Method, the plane rolling thrust bearing arranging in pairs carries out axially without the location completely that rubs large valve plate, in conjunction with bottom surface, hollow out, the back side adds counterweight, during termination of pumping, large valve plate is quick on the draw to the decline of forward residual current, speed is closed action soon, by self gravitation, close and put in place, not needing to rely on adverse current to drive closes, avoided relying on adverse current to drive and closed the pass valve collision causing, sealing pair impacts, the adverse current time is long, when adverse current strengthens, just speed such as closes at the problem, also solved that because of speed, closed collision and impacted sealing pair can only can not be by difficult problems such as metal hard-sealings with rubber sealing, the drops design that while following current Xiang cross section is low flow resistance has reduced valve minimum flow resistance,
D, be provided with the indication of outside aperture, it is completely controlled that the little valve plate of Slow Close installs aperture indication additional.By the hollow valve shaft of level, aperture indicating arm are set, the little valve plate of Slow Close is connected by the chute slide block without free travel with vertical valve rod, and the parts such as little valve plate stroke indicating arm are set, and has realized the real-time demonstration of big or small valve plate aperture;
E, the utility model design slide block (valve rod bearing pin) slide in chute, make the little valve plate of valve rod and Slow Close become a complete controlled sliding bar mechanism, and making stressed surface of contact is a plane contact, the suffered support reaction of valve rod passes through valve rod axis, valve rod no longer bears moment of flexure, and the phenomenon that valve rod extruding guide bush causes lining fragmentation can not occur yet.The utility model adopts slide block sliding groove structure, and the motion of the little valve plate of Slow Close is the controlled dancing that do not exist completely, and the locking measure of bearing pin adopts the junction of the edges of two sheets of paper screw check measure without evagination worries, locking reliable.Valve rod adopts chute slide block to be connected with the little valve plate of Slow Close, and the stroke of little valve plate is controlled completely, without freely swinging space.
F, the utility model are located large valve plate fully open position, axially by plane thrust rolling bearing, locating completely, avoided the appearance of swing and play phenomenon, with plane rolling thrust bearing, large valve plate is axially located completely, gapless, without play, opens and closes without jam, sensitive to the flow of forward residual current and pressure reacting condition while closing valve, close valve absence of collision, can realize zero flow velocity quick closing valve.Little valve plate anticreep design adopts border junction of the edges of two sheets of paper Cock screw structure.
G, large valve plate bottom surface hollow out, the back side adds counterweight, and overflow section is the drops of low flow resistance and establishes juice, and sealing pair is designed to rubber sealing and the general structure of metal hard-sealing.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is that the diaphragm of the utility model preferred embodiment is controlled one of structural representation of slide block type tilt-disc check valve;
Fig. 2 is two of the diaphragm of the utility model preferred embodiment structural representation of controlling slide block type tilt-disc check valve;
Fig. 3 is the structural representation of the diaphragm control link formula tilt-disc check valve of the utility model preferred embodiment.
Marginal data:
1, left valve barrel, 2, right valve barrel, 3, large valve plate, 4, little valve plate, 5, diaphragm control unit, 6, valve shaft, 7, little valve plate bearing pin, 8, tilting valve seat, 9, diaphragm seat, 10, elastomer diaphragm, 11, valve gap, 12, upper bypass tube, 13, lower bypass tube, 14, valve lever bushing, 15, valve rod, 16, diaphragm pressing plate, 19, thrust bearing, 20, bearing setting sleeve, 21, bearing, 22, end cap, 23, aperture locating column, 24, aperture indicating arm, 25, aperture pointer, 26, aperture label, 27, valve plate seal ring, 28, little valve plate cushion rubber, 29, Slow Close valve seat, 30, depressed part, 31, valve rod bearing pin, 32, lining on valve rod, 33, lining under valve rod, 34, connecting rod.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Fig. 1 is that the diaphragm of the utility model preferred embodiment is controlled one of structural representation of slide block type tilt-disc check valve, Fig. 2 is two of the diaphragm of the utility model preferred embodiment structural representation of controlling slide block type tilt-disc check valve, Fig. 3 is the structural representation of the diaphragm control link formula tilt-disc check valve of the utility model preferred embodiment, as Fig. 1, 2, shown in 3, tilt-disc check valve, comprise left valve barrel 1, right valve barrel 2, diaphragm unit 5, large valve plate 3 and little valve plate 4, between left valve barrel 1 and right valve barrel 2, by oblique flange, with bolt, be connected, tiltedly flange top tilts to right valve barrel 2 directions from left valve barrel 1, tilting valve seat 8 is positioned on right valve barrel 2, and be held between two oblique flanges, control slide block type tilt-disc check valve conduit axis with diaphragm and become 55 ° of angles.Large valve plate 3 is along angle layout, and large valve plate 3 is suspended on by left and right valve shaft 6 on the axis hole of left valve barrel 1, and its axis hole is positioned at large valve plate 3 center deviation Shang1/3 positions, can as hard-over, be 45 ° rotatablely moving around left and right valve shaft 6.The gyration center of little valve plate 4 is concentric with large valve plate 3 gyration center, by slide block 17, is connected with valve rod 15 ends in diaphragm control unit 5, can seal the Slow Close valve port a of large valve plate 3 by sealing pair.
Speed is closed the double valve plates design that large valve plate adds the little valve plate of Slow Close, and while driving valve, first slow opening opened soon afterwards, and slow open adjustable; While closing valve, large valve plate 3 is under the transient equiliblium of eccentric weight moment and forward residual current moment of thrust, at the forward current complete shut-down while approaching zero flow velocity that declines, cuts off 95% flow area; Little valve plate 4 adjustable slow-closures, the refluence that may exist is boosted and carried out off-load and release, simultaneously in closing valve process, the diaphragm epicoele volume with elastomer diaphragm 10 being communicated with by bypass tube with valve export slowly increases, band has to flowing backwards to boost the effect of well receiving, be equivalent to a water shock absorber, make valve there is the function that optimum deflate opens pump and pump-stopping water hammer.
It is also, angle or large valve plate 3 are 50 °～65 ° with the angle of horizontal plane.In diaphragm control unit 5, be provided with valve rod 15, valve rod 15 is connected with connecting rod 34 and/or slide block 17, between diaphragm control unit 5 and little valve plate 4, by connecting rod 34 and/or slide block 17, be connected, to guarantee valve rod in diaphragm control unit 5 15 and little valve plate 4 interlocks, and valve rod 15 moves up and down and rotatablely moves and do not interfere with little valve plate 4.Valve shaft 6 is symmetricly set on large valve plate 3 both sides, and valve shaft 6 plays the bearing 21 of connection function while being provided with for large valve plate switching with valve rod 15 fitting surfaces; The end face of valve shaft 6 is provided with thrust bearing 19; Bearing 21 and thrust bearing 19 are self oiling bearing.The keep right outer surface of a side of valve body 2 of large valve plate 3 is provided with the fusiform depressed part 30 of indent, and large valve plate 3 is also provided with balancing weight; Large valve plate 3 adopted the large valve plate 3 of depressed part 30 and balancing weight to pass through position of centre of gravity check, so that can be closed completely under Gravitative Loads; Little valve plate 4 plate face areas are 3%-10% of large valve plate 3 plate face areas.Left valve barrel 1 and right valve barrel 2 between be provided with tilting valve seat 8, on large valve plate 3, be provided with valve plate seal ring 27, valve plate seal ring 27 forms a pair of large valve plate sealing pair with tilting valve seat 8; Large valve plate sealing pair adopts sphere to contact seal form with the conical surface and seals; Valve plate seal ring 27 adopts metal hard-sealing material and/or soft sealing material.On the angle of left valve barrel 1 and right valve barrel 2, all with oblique flange, tilting valve seat 8 is held between the oblique flange of left valve barrel 1 and the oblique flange of right valve barrel 2, and tilting valve seat 8 is detachable block or non-removable integral component.Tilt-disc check valve bottom is provided with spare interface, and capping or damper are installed on spare interface.On valve shaft 6, be connected with opening indicator device, opening indicator device comprises aperture locating column 23, aperture indicating arm 24, aperture pointer 25 and aperture label 26, and aperture locating column 23 is arranged on the position that valve shaft 6 is connected with large valve plate 3; Aperture indicating arm 24 is arranged in the valve shaft 6 of hollow; Aperture indicating arm 24 one end connect aperture locating column 23, and the other end exposes valve shaft 6 and through end cap 22, through on the aperture indicating arm 24 of end cap 22, aperture pointer 25 is housed, and 25 indications of aperture pointer are on aperture label 26; Or device for signalling is also installed on opening indicator device.Diaphragm control unit 5 comprises diaphragm seat 9, elastomer diaphragm 10 and valve gap 11, take elastomer diaphragm 10 as separating surface, the chamber that diaphragm seat 9 and valve gap 11 are formed is divided into diaphragm epicoele and diaphragm cavity of resorption two-part of not water flowing up and down, diaphragm epicoele is communicated with valve export by upper bypass tube 12, and diaphragm cavity of resorption is communicated with valve inlet by lower bypass tube 13; Diaphragm control unit 5 also comprises valve lever bushing 14, valve rod 15 and diaphragm pressing plate 16, diaphragm pressing plate 16 is close on elastomer diaphragm 10, valve lever bushing 14 is fixed on diaphragm seat 9, valve rod 15 tops through elastomer diaphragm 10 and diaphragm pressing plate 16 and be fixed on elastomer diaphragm 10 and composite part that diaphragm pressing plate 16 forms on, valve rod 15 middle parts are enclosed within valve lever bushing 14, and valve rod 15 lower ends are connected on little valve plate 4; Valve rod 15 lower ends are provided with slide block 17 and/or connecting rod 34, on little valve plate 4, be provided with chute 18, between valve rod 15 and little valve plate 4, by slide block 17 and/or connecting rod 34, be connected, valve rod 15 keeps valve rods 15 in vertical direction by slide block 17 in the interior slip of chute 18 or by connecting rod 34; The volume size of diaphragm epicoele and diaphragm cavity of resorption is subject to the differential water pressures of valve inlet and valve export affect and change, the variation actuate valve stem 15 of volume moves up and down in valve lever bushing 14, move up and down and pass to little valve plate 4 by slide block 17, just little valve plate 4 rotates around little valve plate bearing pin 7.
It is also, diaphragm control unit 5 comprises diaphragm seat 9, valve rod 15, elastomer diaphragm 10, diaphragm pressing plate 16, valve gap 11, slide block 17 and valve lever bushing 14, diaphragm pressing plate 16 and elastomer diaphragm 10 are arranged in the diaphragm chamber of diaphragm seat 9 and valve gap 11 compositions, diaphragm pressing plate 16 is close to respectively the face up and down of elastomer diaphragm 10, and diaphragm pressing plate 16 is fixed with composite part and valve rod 15 tops that elastomer diaphragm 10 forms.Elastomer diaphragm 10 is divided into upper and lower disconnected diaphragm epicoele and diaphragm cavity of resorption by diaphragm chamber.By upper bypass tube 12 and lower bypass tube 13, diaphragm epicoele is communicated with respectively with the pipeline of valve inlet with pipeline, the diaphragm cavity of resorption of valve export.Valve rod 15 in diaphragm control unit 5, end is in its lower section provided with slide block 17 by valve rod bearing pin 31, on little valve plate 4, has chute 18, and slide block 17 is arranged in sliding grain 18.When valve rod 15 is changed by diaphragm upper and lower cavity pressure reduction and while moving up and down, slide block 17 will slide in the chute at little valve plate 4 18, and moving up and down of valve rod 15 is converted to little valve plate 4 around the rotation motion of little valve plate bearing pin 7, forms sliding-block linkage.This sliding-block linkage is at little valve plate 4 during in complete shut-down position, and the center line of chute 18 becomes level.The joint of being connected of slide block 17 and valve rod 15, little valve plate 4 and little valve plate bearing pin 7, all adopts the anticreep anti-loose structure without evagination, border junction of the edges of two sheets of paper screw.Axis hole two ends at large valve plate 3, are provided with thrust bearing 19, by left and right valve shaft 6 and left and right end cap 22, large valve plate 3 are located completely in axis hole direction, make large valve plate 3 both have sufficient rotation flexibility, again can be by current disturbance and play.The utility model adopts slide block connecting rod structure, and the little valve plate of Slow Close is completely controlled, adopts border junction of the edges of two sheets of paper screw check, is not subject to water impact, and anti-vibration, has stopped obscission in use.Adopt sliding-block linkage, in design, make little valve plate 4 in the closed position of stressed maximum, suffered power Vertical loading is under water on chute face, and the suffered counter-force of valve rod 15 is by its axis, be not subject to moment of flexure, overcome prior art and adopted link plate structure to make valve rod be subject to moment of flexure, the extruded phenomenon of lining.Large valve plate 3 is axially located without play completely, is rotated flexibly without jam.The utility model adopts thrust bearing 19 axially to locate completely to large valve plate 3, and large valve plate 3 in service, completely without play, opens and closes without jam, is active in one's movements, and can accurately adapt in time the variation of instantaneous current, closes the steady absence of collision of valve.Therefore prior art generally can only be made soft seal form, and the utility model can be made metal hard-sealing form, and soft seal and hard seal form only need to change valve plate seal ring 27, and other component can be completely general, can really realize zero flow velocity quick closing valve, soft and hard seal exchanges.
It is also, on left valve barrel 1 and right valve barrel 2, all with oblique flange, left valve barrel and right valve barrel connect as one by flange and bolt.On right valve barrel 2, be provided with tilting valve seat 8, tilting valve seat 8 is held between the oblique flange of left valve barrel 1 and the oblique flange of right valve barrel 2.Diaphragm control unit 5 comprises diaphragm seat 9, elastomer diaphragm 10 and valve gap 11, take elastomer diaphragm 10 as separating surface, the chamber that diaphragm seat 9 and valve gap 11 are formed is divided into diaphragm epicoele and diaphragm cavity of resorption two-part of not water flowing up and down, diaphragm epicoele is communicated with valve export by upper bypass tube 12, and diaphragm cavity of resorption is communicated with valve inlet by lower bypass tube 13.Diaphragm control unit 5 also comprises valve lever bushing 14, valve rod 15 and diaphragm pressing plate 16, diaphragm pressing plate 16 is close on elastomer diaphragm 10, valve lever bushing 14 is fixed on diaphragm seat 9, valve rod 15 tops through elastomer diaphragm 10 and diaphragm pressing plate 16 and be fixed on elastomer diaphragm 10 and composite part that diaphragm pressing plate 16 forms on, valve rod 15 middle parts are enclosed within valve lever bushing 14, and valve rod 15 lower ends are connected on little valve plate 4.Valve rod 15 lower ends are provided with slide block 17, on little valve plate 4, be provided with chute 18 or axis hole, between valve rod 15 and little valve plate 4, by slide block 17 and/or connecting rod 34, be connected, valve rod 15 keeps valve rod 15 by connecting rod 34, to keep valve rods 15 in vertical direction in vertical direction or valve rod 15 by slide block 17 in the interior slip of chute 18.The volume size of diaphragm epicoele and diaphragm cavity of resorption is subject to the differential water pressures of valve inlet and valve export affect and change, the variation actuate valve stem 15 of volume moves up and down in valve lever bushing 14, move up and down and pass to little valve plate 4 by slide block 17, little valve plate 4 is rotated around little valve plate bearing pin 7.The face up and down of elastomer diaphragm 10 is provided with diaphragm pressing plate 16.Angle, oblique flange or tilting valve seat 8 are 40 °～70 ° with horizontal plane angle.Little valve plate bearing pin 7 places adopt the escapement without evagination worries and border junction of the edges of two sheets of paper tightening.Valve shaft 6 is symmetricly set on large valve plate 3 both sides, and the valve shaft 6 that is arranged on large valve plate 3 both sides is concentric with the axis of little valve plate bearing pin 7; Valve shaft 6 two ends are connected on left valve barrel 1 and large valve plate 3.Valve shaft 6 one end are connected on left valve barrel 1 by movable axis, the other end is connected on large valve plate 3 by thrust bearing 19, bearing setting sleeve 20, bearing 21 and end cap 22,6 pairs of large valve plates 3 of valve shaft position, so that large valve plate can only axial float not occur along bearing 21 directions rotations.It is 45 ° rotatablely moving around valve shaft 6 as hard-over that limiting stopper on valve shaft 6 and left valve barrel 1 limits large valve plate 3.On valve shaft 6, be connected with opening indicator device.Opening indicator device comprises aperture locating column 23, aperture indicating arm 24, aperture pointer 25 and aperture label 26, and aperture locating column 23 is arranged on the position that valve shaft 6 is connected with large valve plate 3; Aperture indicating arm 24 is arranged in the valve shaft 6 of hollow; Aperture indicating arm 24 one end connect aperture locating column 23, and the other end exposes valve shaft 6 and through end cap 22, through on the aperture indicating arm 24 of end cap 22, aperture pointer 25 is housed, and 25 indications of aperture pointer are on aperture label 26.The upstream face cylindrical position of large valve plate 3 is provided with valve plate seal ring 27, and valve plate seal ring 27 forms a pair of large valve plate sealing pair with tilting valve seat 8; The bottom surface of little valve plate 4 is provided with little valve plate cushion rubber 28, and little valve plate cushion rubber 28 forms a pair of Slow Close valve port sealing pair with the Slow Close valve seat 29 that large valve plate 3 Slow Close valve port a install.The outer surface of large valve plate 3 upstream face one sides is designed with streamline drop-shaped depressed part 30, and described large valve plate 3 is also provided with balancing weight.Adopted the large valve plate 3 of depressed part 30 and balancing weight to pass through position of centre of gravity check, made large valve plate 3 guarantee to close completely under Gravitative Loads.The little valve plate 4 of diaphragm control unit 5 restriction is the rotation motion of 55 ° as hard-over around little valve plate bearing pin 7.Valve lever bushing 14 comprises on valve rod lining 33 under lining 32 and valve rod, and valve rod 15 is simultaneously through lining 33 under lining 32 on valve rod and valve rod.
It is also, between valve rod 15 and little valve plate 4, by connecting rod, is connected.On little valve plate 4, be also provided with chute 18, between valve rod 15 and little valve plate 4, by slide block 17, coordinate and be connected with chute 18.Assembly parts by slide block 17 and connecting rod 34 between valve rod 15 and little valve plate 4 coordinates and is connected.Valve rod 15 keeps valve rod 15 in vertical direction by slide block 17 in the interior slip of chute 18 or by connecting rod 34.The volume size of diaphragm epicoele and diaphragm cavity of resorption is subject to the differential water pressures of valve inlet and valve export affect and change, the variation actuate valve stem 15 of volume moves up and down in valve lever bushing 14, move up and down and pass to little valve plate 4 by slide block 17 and/or connecting rod 34, little valve plate 4 is rotated around little valve plate bearing pin 7.
It is also, has set up the opening indicator device of large valve plate 3, and can install easily the stroke aperture indication of little valve plate 4 additional, can show in real time the aperture of big or small valve plate.
It is also, the bottom surface of large valve plate 3 hollows out form and back side counterweight parameter designs through three-dimensional optimized, make large valve plate 3 along each cross section of water (flow) direction the streamlined drops close to low flow resistance, after valve opening, very little only to current, can maintain speed closes large valve plate 3 in fully open position, and is limited in fully open position, with current, does not shake, little valve plate 4 is located non-jitter completely, has reduced the damage by water by valve.
During termination of pumping, the large valve plate 3 of energy flexible rotating can drop in time relevant position with the minimizing of forward current under the effect of eccentric weight moment, when forward current are close to zero time, large valve plate 3 will be closed in time, thereby realize zero stream quick-closing valve, block more than 95% flow area.
The little valve plate 4 that controlled by diaphragm control unit 5, adopts without evagination border junction of the edges of two sheets of paper screw anticreep anti-loose structure, in use without obscission, and foreign material in worries current nowhere.Opening the starting stage, little valve plate 4 is delivered to large valve plate 3 by the differential water pressures of diaphragm chamber, makes the opening speed of large valve plate 3 controlled, realizes slow opening; At little valve plate 4, close at the end, it is delivered to the differential water pressures of diaphragm chamber on large valve plate 3, increases the seal pressure of large valve plate 3, and closing more of large valve plate 3 tightly do not leaked.
When water pump just starts, valve keeps closed condition, for water pump is made pressure, realizes and closes pump after valve underloading, reduces the inrush current of pump motor; When water pump normal operation influent side pressure rise, utilize the differential water pressures of valve plate both sides to drive big or small valve plate to open, speed is closed maximum opening angle and flow and the pressure correlation of large valve plate 3, the control that is subject to diaphragm upper and lower cavity pressure reduction of little valve plate 4, only needs the pressure reduction of 2m can remain on maximum opening and does not shake.When water pump is shut down when forward water flow and pressure drop; speed is closed large valve plate 3 and under Gravitative Loads, is fallen to closing most of flow area; realize quick closing valve and block a large amount of adverse currents; after large valve plate 3 complete shut-downs; little valve plate 4 controlled slow decreasing with valve rod 15 under the control of diaphragm control unit 5 is closed discharge orifice; realize slow closing with reduction water pump reversing time and maximum inversion rotating speed; prevent impact of water hammer; the effect that can play energy-absorbing chamber in the process that simultaneously diaphragm epicoele expands at volume absorbs the head that boosts, for water pump assembly and pipe-line system provide the hammer protection that disappears.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a tilt-disc check valve, comprises left valve barrel (1), right valve barrel (2), large valve plate (3), little valve plate (4) and diaphragm control unit (5),
It is characterized in that,
Between described left valve barrel (1) and described right valve barrel (2), by angle, dock and be integrated,
Angle true dip direction is that top tilts to described right valve barrel (2) direction,
It is upper that described diaphragm control unit (5) is arranged on described left valve barrel (1),
Described large valve plate (3) arranges along angle,
In the valve pocket of described large valve plate (3) in described left valve barrel (1) and described right valve barrel (2) formation,
Described large valve plate (3) is suspended on the axis hole of described left valve barrel (1) by valve shaft (6),
Described little valve plate (4) is connected with described diaphragm control unit (5),
Described little valve plate (4) is arranged on the Slow Close valve port place of described large valve plate (3) by little valve plate bearing pin (7).
2. tilt-disc check valve according to claim 1, is characterized in that, angle or large valve plate (3) are 50 °～65 ° with the angle of horizontal plane.
3. tilt-disc check valve according to claim 2, it is characterized in that, in described diaphragm control unit (5), be provided with valve rod (15), valve rod (15) is connected with connecting rod (34) and/or slide block (17), between described diaphragm control unit (5) and described little valve plate (4), by connecting rod (34) and/or slide block (17), is connected.
4. tilt-disc check valve according to claim 3, is characterized in that,
Described valve shaft (6) is symmetricly set on described large valve plate (3) both sides,
Described valve shaft (6) plays the bearing (21) of connection function while being provided with for large valve plate switching with valve rod (15) fitting surface;
The end face of described valve shaft (6) is provided with thrust bearing (19);
Described bearing (21) and described thrust bearing (19) are self oiling bearing.
5. tilt-disc check valve according to claim 4, is characterized in that, the keep right outer surface of a side of valve body (2) of described large valve plate (3) is provided with the fusiform depressed part of indent (30);
Described large valve plate (3) is also provided with balancing weight;
Described little valve plate (4) plate face area is the 3%-10% of described large valve plate (3) plate face area.
6. tilt-disc check valve according to claim 5, is characterized in that,
Between described left valve barrel (1) and described right valve barrel (2), be provided with tilting valve seat (8),
On described large valve plate (3), be provided with valve plate seal ring (27),
Described valve plate seal ring (27) forms a pair of large valve plate sealing pair with described tilting valve seat (8);
The sealing configuration that described large valve plate sealing pair adopts sphere to contact with the conical surface seals.
7. tilt-disc check valve according to claim 6, is characterized in that,
On the angle of described left valve barrel (1) and described right valve barrel (2) all with oblique flange,
Described tilting valve seat (8) is held between the oblique flange of described left valve barrel (1) and the oblique flange of described right valve barrel (2),
Tilting valve seat (8) is detachable block or non-removable integral component.
8. according to the tilt-disc check valve described in any one in claim 1 to 7, it is characterized in that, tilt-disc check valve bottom is provided with spare interface, and capping or damper are installed on spare interface.
9. according to the tilt-disc check valve described in any one in claim 1 to 7, it is characterized in that,
Described valve shaft is connected with opening indicator device on (6),
Described opening indicator device comprises aperture locating column (23), aperture indicating arm (24), aperture pointer (25) and aperture label (26),
Described aperture locating column (23) is arranged on the position that described valve shaft (6) is connected with described large valve plate (3);
Described aperture indicating arm (24) is arranged in the described valve shaft (6) of hollow;
Described aperture indicating arm (24) one end connects described aperture locating column (23), and the other end exposes described valve shaft (6) and passes end cap (22),
Through on the described aperture indicating arm (24) of described end cap (22), aperture pointer (25) is housed,
Described aperture pointer (25) indication is on described aperture label (26);
Or device for signalling is also installed on opening indicator device.
10. according to the tilt-disc check valve described in any one in claim 1 to 7, it is characterized in that,
Described diaphragm control unit (5) comprises diaphragm seat (9), elastomer diaphragm (10) and valve gap (11),
The described elastomer diaphragm (10) of take is separating surface, and the chamber that described diaphragm seat (9) and described valve gap (11) are formed is divided into diaphragm epicoele and diaphragm cavity of resorption two-part of not water flowing up and down,
Described diaphragm epicoele is communicated with valve export by upper bypass tube (12),
Described diaphragm cavity of resorption is communicated with valve inlet by lower bypass tube (13);
Described diaphragm control unit (5) also comprises valve lever bushing (14), valve rod (15) and diaphragm pressing plate (16),
It is upper that described diaphragm pressing plate (16) is close to described elastomer diaphragm (10),
It is upper that described valve lever bushing (14) is fixed on described diaphragm seat (9),
Described valve rod (15) top through described elastomer diaphragm (10) and described diaphragm pressing plate (16) and be fixed on described elastomer diaphragm (10) and the composite part of described diaphragm pressing plate (16) composition on,
Described valve rod (15) middle part is enclosed within described valve lever bushing (14),
Described valve rod (15) lower end is connected on described little valve plate (4);
Described valve rod (15) lower end is provided with slide block (17) and/or connecting rod (34);
Between described valve rod (15) and described little valve plate (4), by described connecting rod, be connected,
Or on described little valve plate (4), be also provided with chute (18), between described valve rod (15) and described little valve plate (4), by described slide block (17), coordinate and be connected with described chute (18),
Or the assembly parts by described slide block (17) and described connecting rod (34) between described valve rod (15) and described little valve plate (4) coordinates and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416011.9U CN203394742U (en) | 2013-07-12 | 2013-07-12 | Inclined plate check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416011.9U CN203394742U (en) | 2013-07-12 | 2013-07-12 | Inclined plate check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394742U true CN203394742U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416011.9U Expired - Lifetime CN203394742U (en) | 2013-07-12 | 2013-07-12 | Inclined plate check valve |
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| Country | Link |
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| CN (1) | CN203394742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334920A (en) * | 2013-07-12 | 2013-10-02 | 株洲南方阀门股份有限公司 | Inclined plate check valve |
-
2013
- 2013-07-12 CN CN201320416011.9U patent/CN203394742U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334920A (en) * | 2013-07-12 | 2013-10-02 | 株洲南方阀门股份有限公司 | Inclined plate check valve |
| WO2015003584A1 (en) * | 2013-07-12 | 2015-01-15 | 株洲南方阀门股份有限公司 | Inclined plate check valve |
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