CN205978754U - Novel high -speed admission valve that exhausts of combined type - Google Patents

Abstract

The utility model discloses a novel high -speed admission valve that exhausts of combined type has valve body, valve gap, floater, its characterized in that: the floater is spherical body, the floater top be provided with that direction length is high, proportion is littleer than the floater, the bottom has with the floater complex in the lift cover in frustum hole, be provided with the floater cover in the floater and the cover outside of going up and down, floater cover bottom is equipped with the water conservancy diversion piece that has a plurality of spiral stators, suitable high department at the valve body barrel is equipped with exhausting function detection device. The utility model discloses it require to reduce to hang down straightness to the installation, prevent effectively that a large amount of water from spouting from the hole of exhausting greatly to can make things convenient for, detect exhausting function at any time.

Description

Novel combined high speed exhaust intake valve

Technical field

This utility model is related to a kind of intake and exhaust valve, the combined high-speed aerofluxuss air inlet more particularly, in water supply and sewerage pipeline Valve.

Background technology

In order to improve transfer efficiency and prevent conveyance conduit to be damaged because of negative pressure, combined high-speed aerofluxuss intake valve （Hereinafter referred to as air bleeding valve）It is widely used on aqueduct, be typically mounted at the highest point of pipeline or the position easily gathering air Put.The structural shape of air bleeding valve is more, the Integral exhaustion type valve wherein disclosed in CN200420103028X patent and Split type air bleeding valve disclosed in CN103470836 patent is classified as typical construction by GB, but this kind of valve has following asking Topic：1）Can not be slightly larger in gradient（Such as 2 ° of ＞）Pipeline on use, if install heel row air valve perpendicularity deviation larger, So because buoyancy direction and large and small steam vent require the direction of sealing inconsistent although lifting cover or ball float are additionally arranged guiding Mechanism, but due to kinematic pair between fit clearance larger, the guiding length of especially ball float is shorter, when they rise easily with phase Answer the contact internal walls in hole, cause crooked not dead, or the valve seat because of big small de-air hole is unable to precise alignment with flap, causes sealing Unreliable cause leak, the installation perpendicularity of therefore national regulations air bleeding valve answers 2 ° of ＜, this just give install and pipeline laying increase Plus difficulty；Some air bleeding valves in order to solve the above problems, using long cylinder ball float, although the sealing of small de-air hole of having determined that is so situated between Problem, but increased the height of valve, this requires the high missile silo of comparison；2）First or tubing supplies water after overhauling again When, when aerofluxuss terminate, after water enters air bleeding valve, because valve inner lead is narrower, flow velocity is high, and the rate of climb of lifting cover is not with On, therefore before big vent closure, there is substantial amounts of water outwards to spray from big steam vent, pollute surrounding；3）Due to Inevitably carry trace impurity in the water of conveying, influence whether degassing function long afterwards using day, for example, cause small de-air hole Blocking；Also have the rubber on small de-air hole surface, with the passing of time easily degeneration, with ball float, " adhesion " occurs, cause and lose degassing function.

Content of the invention

This utility model is mainly the deficiency solving existing for prior art, thus developing one kind to may be mounted at gradient Larger

（5 ° of ＜）Pipeline on, reduce the outside spray volume of water, and be conducive to absorbing impact of water hammer ripple and conveniently being arranged The novel combined high speed exhaust intake valve of airway dysfunction detection.

Above-mentioned technical problem of the present utility model is mainly addressed by following technical proposals：A kind of NEW TYPE OF COMPOSITE Formula high speed exhaust intake valve, have valve body, valve gap, ball float it is characterised in that：Described ball float is ball float, above ball float It is provided with that guiding length is high, proportion is less than ball float, the lifting cover with the interior cone machine hole of ball float cooperation is arranged at bottom；In ball float and lifting It is provided with ball float cover, described ball float cover bottom is provided with the flow deflector with some spiral type stators outside cover；In valve body cylinder Suitable height at be provided with degassing function detection means.

The technical solution of the utility model can also be perfect further：

Preferably, the profile of described valve gap is stairstepping, diameter is up big and down small, and outer rim has several installing holes, central authorities It is provided with big steam vent, on upper surface, the vicinity near big steam vent is evenly equipped with the projection of some certain altitudes, for installing aerofluxuss Cover, is embedded with O-ring seals one as the valve seat of big steam vent, the lower convex platform of lower end and valve body in the annular inverted trapezoidal groove of lower surface The low groove pine of upper end is joined, and compresses ball float cover；The convex platform of lower end is matched with the upper groove of valve body upper end, and it is close to compress O shape Seal two, in case medium leaks.

Preferably, described hood is similar to the plate of a back-off, it is screwed on the projection of valve gap upper surface；Row Cavity between gas hood and valve gap is discharge chamber.

Preferably, described ball float cover is a upper end and carrying minor face flange, have the thin cylinder of circular arc bottom, it is arranged on valve In the cylinder of body, the through hole slide fit of the cylindrical and valve body upper end internal shoulder of cylinder upper end, the minor face flange of upper end is pressed in valve Between the lower surface of lid and the low groove of valve body upper end, the outer wall of cylinder forms annular chamber with the inwall of valve body cylinder；On cylinder Four perisporiums in portion are provided with the exhausting window that several are divided equally, and the top of exhausting window is formed with the lower surface of the internal shoulder of valve body upper end Pit buffer；The appropriate location of spherical bottom side is provided with a limbers, and the upside of bottom center is fixed with cushion pad, prevents from floating It is damaged when ball hurtles down；The lower end of bottom is provided with a center the small boss of screw, in order to fixing flow deflector.

Preferably, the main body of described lifting cover is a cylinder, its cylindrical endoporus with ball float cover moves joins, upper surface There is the outer frustum of a protrusion, the maximum gauge of outer frustum is slightly less than the diameter of big steam vent, when before big vent closure, ventilation Or water flowing area is gradually reduced, turns off speed and be gradually lowered, reach the purpose reducing impulsive force；The bottom of lifting cover have one with The interior cone machine hole of ball float cooperation；There is a shoulder hole at the center of outer frustum, and interior cone machine hole top surface insertion, the centrage of shoulder hole with Cylindrical centrage is consistent, and the bottom of shoulder hole is provided with the stairstepping exhaust nozzle that center has small de-air hole, and by having in The holding screw of heart through hole is fixed；Exhaust nozzle bottom surrounding is covered with rubber, and the top surface of interior cone machine hole is slightly protruded in the lower end of exhaust nozzle, As small de-air hole and valve seat：It is drilled with three pairs of radial holes in cylindrical outer surface and waiting of internal taper hole top surface on isometry position, Between each pair, angle is 60 °, and between each pair holes, angle is 150 °；

After installation, the centrage of above-mentioned each part is on the same line, and vertical with the lower surface of valve body.

Preferably, described degassing function detection means includes the detection screw with handwheel, side chamber, aperture one and its outside Conical valve seat；The outside of side chamber is provided with female thread, screws with the external screw thread of detection screw, and the head of detection screw is provided with cone Platform, the taper of frustum is consistent with the conical valve seat in aperture one outside, and the two forms valve port；Detection screw center is drilled with blind hole, directly Footpath direction is drilled with aperture two, and aperture two is vertical with blind hole to be communicated；After assembling, frustum and the aperture one of detection screw and its end and The centrage of the conical valve seat outside it is consistent.

This utility model beneficial effect is：

1）It is provided with guiding length height, proportion is less than ball float and the inner cone with ball float cooperation is arranged at bottom above ball float The lifting cover in platform hole, because guiding length is high, therefore may be mounted at gradient larger（Such as 5 ° of ＜）Pipeline on, and make valve Interior air content increases, and is conducive to absorbing impact of water hammer ripple and prevents water-ice jelly from expanding and spalling valve body；Because lifting cover proportion is little, After water inlet, do sth. in advance the rise time of lifting cover, closed big steam vent earlier, decrease the water yield of outside ejection；

2）Floating-body cover bottom is provided with the flow deflector with some spiral type stators, make current in annular chamber twist Rise, slow down the rate of climb of current, and the connecting portion in valve body and ball float cover is provided with pit buffer, make the current of rising Slow down further, accomplish the closing basic synchronization with big steam vent, decrease the water yield of outside ejection；

3）It is provided with degassing function detection means, can facilitate, momentarily the degassing function of small de-air hole be detected.

Brief description

Accompanying drawing 1 is a kind of structural representation of the present utility model（In valve anhydrous when state）；

Accompanying drawing 2 be Fig. 1 aerofluxuss at the end of state.

Description of reference numerals：1st, flow deflector, 2, ball float cover, 3, ball float, 4, lifting cover, 5, exhaust nozzle, 6, holding screw, 7, Valve body, 8, O-ring seals one, 9, O-ring seals two, 10, valve gap, 11, bolt, 12, nut, 13, hood, 14, screw, 15 Detection screw；

H, guiding length, H1, annular chamber, H2, intermediate cavity, H3, side chamber, H4, discharge chamber；

D, radial hole, a, exhausting window, c, small de-air hole, b, big steam vent, n, pit buffer, m, water flowing are led to, e, aperture One, f, aperture two, g, blind hole.

Specific embodiment

Below by embodiment, and combine accompanying drawing, the technical solution of the utility model is further described in detail.

Embodiment：

As shown in figure 1, this utility model is by flow deflector 1, ball float cover 2, ball float 3, lifting cover 4, exhaust nozzle 5, holding screw 6th, valve body 7, O-ring seals 1, O-ring seals 29, valve gap 10, bolt 11, nut 12, hood 13, screw 14 and detection Screw 15 forms.

Valve body 7 be two ends there is flange, middle part be cylinder hollow valve casing, lower through-hole is water inlet h, and diameter compares cylinder Internal footpath is little；Lower flange is general and service valve（Do not draw on figure）Upper flange connect, the lower flange of service valve and ventilating water pipe Respective flange connects, and closes service valve when overhauling air bleeding valve, in order to avoid spraying outside the water in pipeline；The outer rim of upper flange is provided with 8- Valve body 7, valve gap 10 and ball float cover 2 are integrally fixed by 12 uniform installing holes with bolt 11, nut 12 etc.；On upper through hole Side is provided with upper and lower two grooves and an internal shoulder, and O-ring seals 29 are arranged in upper groove.

The profile of valve gap 10 is stairstepping, and diameter is up big and down small, and outer rim has a 4-8 installing hole, quantity, size, distribution and Installing hole on valve body 7 upper flange is consistent；Central authorities are provided with big steam vent b；On upper surface, the vicinity near big steam vent b is evenly equipped with Three projections having certain altitude；It is embedded with O-ring seals 1 as the valve of big steam vent b in the annular inverted trapezoidal groove of lower surface Seat；The low groove pine of the lower convex platform of lower end and valve body 7 upper end is joined, and compresses ball float cover 2；The convex platform of lower end and valve body 7 upper end Upper groove match, and compress O-ring seals 29, in case medium leaks.

Hood 13 is similar to the plate of a back-off, is made of clear material, is screwed the three of valve gap 10 upper surface On individual projection, its effect has four：1）Prevent the water spraying from big steam vent b from splashing to surrounding；2）Prevent extraneous dirt from entering Air bleeding valve；3）Observe the sealing situation of large and small steam vent；4）When for the first time to pipeline water-filling, whether closed according to big steam vent, really Recognize the water-filling situation in pipeline.Cavity between hood 13 and valve gap 10 is discharge chamber H4.

Ball float cover 2 is that a upper end carries minor face flange, has the thin cylinder of circular arc bottom, is arranged in the cylinder of valve body 7, The through hole slide fit of the cylindrical and valve body 7 upper end internal shoulder of cylinder upper end, the minor face flange of upper end is pressed in the lower end of valve gap 10 Between the low groove of face and valve body 7 upper end, the outer wall of cylinder forms annular chamber H1 with the inwall of valve body 7 cylinder；Cylinder top Four perisporiums are provided with 6 exhausting window a dividing equally, and the top of window a forms pit buffer n with the lower surface of the internal shoulder of valve body 7 upper end； The appropriate location of spherical bottom side is provided with a limbers m, and the upside of bottom center is fixed with cushion pad k, prevents spherical floating Ball 3 is damaged when hurtling down, and the lower end of bottom is provided with a center has the square small boss of screw, in order to be screwed Flow deflector 1.Flow deflector 1 is made up of 4-8 piece stator, and stator has certain angle, and current, can be in annular after flow deflector 1 Spiral in the H1 of chamber, to slow down the speed of current rising.

The cylinder of lifting cover 4 moves in the endoporus fitting over ball float cover 2, can freely up and down move wherein, engagement height H foot To prevent it when installing 5 ° of perpendicularity, move up and down not crooked not dead；There is the outer frustum of a protrusion upper surface, outer frustum Maximum gauge is slightly less than the diameter of big steam vent b, in order to ventilate before big vent closure（Water）Area is gradually reduced, and turns off Speed is gradually lowered, and reduces impulsive force；Cylinder bottom has an interior cone machine hole with special angle；The center of outer frustum has one Shoulder hole, and interior cone machine hole top surface insertion, the centrage of shoulder hole is consistent with cylindrical centrage, and the bottom of shoulder hole is provided with Center has small de-air hole c stairstepping exhaust nozzle 5, and fixing by the holding screw 6 with central through hole, exhaust nozzle 5 bottom four It is covered with rubber week, the valve seat as small de-air hole c for the top surface of interior cone machine hole is slightly protruded in the lower end of exhaust nozzle 5；In cylinder appearance It is drilled with three couples of radial hole d, between each pair, angle is 60 °, and between each pair two hole, angle is on face and the isometry position of inner cone countertop 150 °, so, no matter where lifting cover 4 goes to, at least three holes are communicated with exhausting window a；When lifting cover 4 is in water buoyancy When rising to extreme higher position under effect, cylindrical upper surface is contacted with O-ring seals 1, and big steam vent b is closed, and The lower compression of intrinsic pressure effect is water-tight, and now the top of radial hole d is more lower slightly than the top of exhausting window a.Lifting cover 4 adopts resin to produce Product, proportion is less than the proportion of ball float 3.

Because the bearing strength of spheroplast is higher, therefore using the ball float 3 with stainless steel casing, for closing little aerofluxuss Hole c, its weight can not be too light, and otherwise small de-air hole is difficult to open, generally 0.7-0.8；Ball float 3 is arranged on the interior of lifting cover 4 Below cone machine hole, when ball float 3 is contacted, only has the gap of very little with the lower surface of exhaust nozzle with the inner conical surface of surrounding, to ensure When tilting to install, small de-air hole c can be made to keep sealing.Space above it is intermediate cavity H2.

After installation, the centrage of above-mentioned each part is on the same line, and vertical with the lower surface of valve body 7.

Degassing function detection means is arranged on suitably highly going up of valve body 7 cylinder, and it highly by pumped (conveying) medium, ball float and floats In the proportion of ball cover and cavity, the pressure of the pressure of gas and pumped (conveying) medium determines, because the pressure of pumped (conveying) medium is to change, Thus expand when compressing during gas in valve, therefore water level fluctuates up and down, but must assure that normally functioning in air bleeding valve In the case of, this is highly below the lowest water level of fluctuation.

Detection means is formed by detecting screw 15, conical valve seat of side chamber H3, aperture one e and its outside etc., side chamber H3 Outside is provided with female thread, screws with the external screw thread of detection screw 15, and the head of detection screw 15 is provided with frustum, the taper of frustum with Conical valve seat outside aperture one e is consistent, and the two forms valve port, and the cylindrical upper rolling of handwheel of detection screw 15 other end has straight burr, Center is drilled with blind hole g, and diametric(al) is drilled with aperture two f, and aperture two f is vertical with blind hole g to be communicated.After assembling, detect screw 15 And its frustum of end is consistent with the centrage of aperture one e and its conical valve seat in outside.

Operation principle of the present utility model：

In valve anhydrous when（Fig. 1）, ball float 3 and lifting cover 4 are located at the bottom of ball float cover 2.When first or tubing maintenance Afterwards again to during piped water supply, the large quantity of air in pipeline passes through service valve, water inlet h, stator 1, annular chamber H1, exhausting window In a, entrance ball float cover 2, then quickly discharged by big steam vent b and discharge chamber H4.Because air bleeding valve is typically mounted at The highest point of pipeline, therefore after being full of water in pipeline, water just enters air bleeding valve, due to the effect of stator 1, makes entrance annular chamber Helically formula rises the current of H1, slow down the rate of climb of current；The current rising are got back in the pit buffer n at top Slow down further；The hole m from ball float cover 2 bottom for the water enters the bottom of ball float cover 2 simultaneously, because limbers m deviates cylinder bottom, therefore Can will be incorporated into discharge in annular chamber H1 from the air in pipeline to greatest extent, and reduce the air entering in floating-body cover 2 Amount, in order to avoid have influence on the rising of ball float 3 grade；Because the proportion of lifting cover 4 is less than ball float 3, therefore rise first；Limbers m's The angle of size and stator can be essentially ensures that big steam vent b connects when the current in annular chamber H1 spray from big steam vent b Nearly closing, stops Quick air-discharge, which prevent substantial amounts of water and outwards sprays and pollute environment.In water, the air of residual is by rising Ball float 3 under pressure, discharged by small de-air hole c, then ball float 3 by small de-air hole c close（Fig. 2）, aerofluxuss knot Bundle, the air that now must discharge in valve is nearly all discharged.Because guiding length H of lifting cover 4 is larger, the therefore rate of climb Even, even if slightly larger with the fit clearance of floating-body cover 2, also will not occur can not close big steam vent because crooked not dead.

When water-filling completes, after big steam vent b and the closing of small de-air hole c, in annular chamber H1 more than lifting cover 4 lower surface Contain more air, and communicated with intermediate cavity H2 by radial hole d, this partial air is airtight, and has one Fixed pressure, therefore in the case of normal water supply, big steam vent b will not open.In water supply process with temperature and The change of pressure, the air in water is released, and gathers to the top of annular chamber H1 and intermediate cavity H2, and air pressure constantly rises Height, the water level in valve pocket declines therewith, and the buoyancy suffered by ball float 3 also reduces therewith, when the weight of ball float 3 exceedes suffered buoyancy During with small de-air hole c because of upwards thrust sum suffered by inside and outside differential pressure, ball float 3 declines, and small de-air hole c is opened, in annular chamber H1 Body of calming the anger pass through aperture d and intermediate cavity H2, discharge from small de-air hole c, after body of calming the anger is discharged, water level in valve pocket Raise, ball float 3 rises, again small de-air hole c is closed, such iterative cycles, therefore in air bleeding valve normal work, little aerofluxuss Hole is ceaselessly to work.

When pipe drainage, produce negative pressure in pipeline, the water level in valve declines rapidly, ball float 3 and lifting cover 4 fall back to floating The bottom of ball cover 2, through air bleeding valve, the order contrary with during aerofluxuss, to QI invigorating in pipeline, eliminates in pipeline extraneous air Negative pressure, prevents pipeline from damaging because producing negative pressure.

Because guiding length H of lifting cover 4 is longer, the space of intermediate cavity H2 is less in addition, therefore on annular chamber H1 top Air capacity more, that is, water level is relatively low because air is elastomer, this not only favorable for absorption impact of water hammer ripple, and can prevent because Frost expands and spalling valve body.

Degassing function detection means

Air bleeding valve fault has two：One is big small de-air hole causes leak because debris such as block at the reason, and this can be from transparent aerofluxuss Down see sth with half an eye above cover 13, if it find that leak, hood 13 can be pulled down and carry out respective handling.Two is small de-air hole because of dirt Thing blocks, or small de-air hole lower end caulking gum is with the passing of time rotten, is bonded together with ball float 3, even if water level decreasing, ball float is not yet Decline, now small de-air hole loses degassing function.This device can detect at any time and easily to this fault.

As it was previously stated, the water level in annular chamber H1 in the case of normal water supply should be in more than aperture e, if small de-air hole is not Recurrence degassing function, then the gas atmosphere in annular chamber H1 increases, water level can be reduced under aperture e.

Detection method is as follows：Rotate detection screw 15, open valve port, annular chamber H1 pass through aperture one e, valve port, side chamber H3, And aperture two f is communicated with blind hole g, if from blind hole g first ejection be water, then can confirm that small de-air hole degassing function Normally, if first ejection be gas, then can confirm that function is abnormal.

Additionally, when dismounting air bleeding valve is overhauled, this device should be first passed through and discharges the body of calming the anger in valve body, keep away Exempt to make valve gap etc. fly up to hurt sb.'s feelings due to intrinsic pressure.

Claims (6)

1. a kind of novel combined high speed exhaust intake valve, has valve body（7）, valve gap（10）, ball float（3）It is characterised in that：? Spherical ball float（3）Top, is provided with that guiding length is high, proportion is less than ball float, the liter with the interior cone machine hole of ball float cooperation is arranged at bottom Fall cover（4）；In ball float（3）With lifting cover（4）Outside is provided with ball float cover（2）, described ball float cover bottom is provided with some has spiral shell The flow deflector of rotation shape stator（1）；In valve body（7）It is provided with degassing function detection means at the suitable height of cylinder.

2. novel combined high speed exhaust intake valve according to claim 1 it is characterised in that：Described valve gap（10）Outer Shape is stairstepping, and diameter is up big and down small, and outer rim has several installing holes, and central authorities are provided with big steam vent（b）；Near big on upper surface Steam vent（b）Vicinity be evenly equipped with the projection of some certain altitudes, for installing hood（13）；The annular inverted trapezoidal of lower surface It is embedded with O-ring seals one in groove（8）As big steam vent（b）Valve seat；The lower convex platform of lower end and valve body（7）The low groove of upper end Pine is joined, and compresses ball float cover（2）；The convex platform of lower end and valve body（7）The upper groove of upper end matches, and compresses O-ring seals two （9）, in case medium leaks.

3. novel combined high speed exhaust intake valve according to claim 2 it is characterised in that：Described hood（13）Shape Like the plate of a back-off, it is made of clear material, is screwed in valve gap（10）On the projection of upper surface；Hood（13）With Valve gap（10）Between cavity be discharge chamber（H4）.

4. the novel combined high speed exhaust intake valve according to claim 1 or 2 or 3 it is characterised in that：Described ball float cover （2）It is arranged on valve body（7）Cylinder in, be that a upper end carries minor face flange, has the thin cylinder of circular arc bottom, cylinder upper end Cylindrical and valve body（7）The through hole slide fit of upper end internal shoulder, the minor face flange of upper end is pressed in valve gap（10）Lower surface and valve Body（7）Between the low groove of upper end, the outer wall of cylinder and valve body（7）The inwall of cylinder forms annular chamber（H1）；Cylinder top Four perisporiums are provided with 6 exhausting windows divided equally（a）, exhausting window（a）Top and valve body（7）The lower surface shape of the internal shoulder of upper end Become pit buffer（n）；The appropriate location of spherical bottom side is provided with a limbers（m）, the upside of bottom center is fixed with buffering Pad（k）, prevent ball float（3）It is damaged when hurtling down；The lower end of bottom is provided with a center the small boss of screw, in order to Fixing flow deflector（1）.

5. the novel combined high speed exhaust intake valve according to claim 1 or 2 or 3 it is characterised in that：Described lifting cover （4）Main body be a cylinder, its cylindrical with ball float cover（2）Endoporus move join, upper surface have one protrusion outer frustum, outward The maximum gauge of frustum is slightly less than big steam vent（b）Diameter；Lifting cover（4）Cylinder bottom has one and ball float（3）Cooperation Interior cone machine hole；There is a shoulder hole at the center of outer frustum, and interior cone machine hole top surface insertion, the centrage of shoulder hole with cylindrical in Heart line is consistent, and the bottom of shoulder hole is provided with center and has small de-air hole（c）Stairstepping exhaust nozzle（5）, and led to by having center The holding screw in hole（6）Fixing；Exhaust nozzle（5）Bottom surrounding is covered with rubber, exhaust nozzle（5）Lower end slightly protrude interior cone machine hole Top surface, as small de-air hole（c）Valve seat：The isometry position with interior cone machine hole top surface for the cylindrical outer surface is drilled with three diameters To aperture（d）, between each pair, angle is 60 °, and between each pair holes, angle is 150 °；

After installation the centrage of above-mentioned each part on the same line, and and valve body（7）Lower surface vertical.

6. the novel combined high speed exhaust intake valve according to claim 1 or 2 or 3 it is characterised in that：Described aerofluxuss work( Detection means can include the detection screw with handwheel（15）, side chamber（H3）, aperture one（e）And its conical valve seat in outside；Side chamber （H3）Outside be provided with female thread, with detection screw（15）External screw thread screw, detect screw（15）Head be provided with frustum, cone The taper of platform and aperture one（e）The conical valve seat in outside is consistent, and the two forms valve port；Detection screw（15）Center is drilled with blind hole （g）, diametric(al) is drilled with aperture two（f）, aperture two（f）And blind hole（g）Vertically communicate；After assembling, detect screw（15）And its The frustum of end and aperture one（e）And its centrage of the conical valve seat in outside is consistent.