CN106246940A - A kind of plunger piston type valve core - Google Patents
A kind of plunger piston type valve core Download PDFInfo
- Publication number
- CN106246940A CN106246940A CN201610729344.5A CN201610729344A CN106246940A CN 106246940 A CN106246940 A CN 106246940A CN 201610729344 A CN201610729344 A CN 201610729344A CN 106246940 A CN106246940 A CN 106246940A
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- China
- Prior art keywords
- liquid chlorine
- valve rod
- conical section
- valve
- fixture block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 230000007423 decrease Effects 0.000 claims abstract description 16
- 208000015943 Coeliac disease Diseases 0.000 claims abstract description 8
- 208000002925 dental caries Diseases 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 6
- 229950000845 politef Drugs 0.000 claims description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract description 96
- 238000011049 filling Methods 0.000 abstract description 16
- 238000003860 storage Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008676 import Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 235000017168 chlorine Nutrition 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of plunger piston type valve core, including insert body and valve seat, described insert body includes valve rod and two sprues, sprue lower surface is provided with the conical section that external diameter successively decreases downwards along valve rod axis direction, valve seat horizontal positioned, two vertical sections of valve seat all have the connection cavity matched with conical section, valve rod vertically runs through two connection cavitys, multiple fixture block it is being provided with on its external wall along conical section circumference, connection cavity inner wall has multiple draw-in groove adapted with fixture block, is fixed with sealing ring in the lower surface of conical section.Reciprocating motion by valve rod in the vertical direction, the connection between liquid chlorine storage tank and transfer cask and opening and closing can be realized, and then the accurate of liquid chlorine flow controls during quickly realizing liquid chlorine filling, avoid damming not in time or damming low precision and cause the leakage of liquid chlorine because of liquid chlorine, to reach to ensure the liquid chlorine flexible when filling, improve the purpose of the measuring accuracy of liquid chlorine.
Description
Technical field
The present invention relates to the control valve of a kind of liquid chlorine filling system, specifically refer to a kind of plunger piston type valve core.
Background technology
In chemical industry chlor-alkali production industry, product relates to the harmful influence such as liquid chlorine, and its sale is filled with the biggest difficulty, and
Fill the most various complexity of formality；Owing to liquid chlorine has toxicity, easily gasifies, once reveal, process and the most maybe cannot locate
During reason, will cause serious injury the person, thus cause serious accident, therefore it fills requirement strictly, safety guarantee
Measure must be perfect.When liquefied chlorine cistern car is carried out, tank car pressure can rise with liquid chlorine temperature in tank car and increase, once hypertonia
Tank car tank body just has the danger that blast occurs.Any liquid chloro container, its volumetric efficiency all must not exceed 80%, it is seen that liquid chlorine filling
During accurate metering just seem particularly significant, safety factors to be considered, and as benefit unit, its measuring accuracy
Also sales achievement it is directly connected to.But, the metering that fills of liquid chlorine is a complex process affected by many factors, as filled
Error in dipping that the type selecting of device self and alignment error cause, fill pipeline gas-liquid two-phase and evacuate error in dipping, the ring caused
Error in dipping, extraneous vibration that border temperature causes disturb the error etc. caused.Simultaneously for improving quantifying and loading metering benefit, reduce
The lost on sale that error in dipping brings, selects and a kind of had not only had higher measuring accuracy, stability, but also compares proper measurement environment
Mass flowmenter and i.e. open the quantitative controller i.e. stopped to improve safety, just seem necessary.
Summary of the invention
It is an object of the invention to provide a kind of plunger piston type valve core, it is ensured that the liquid chlorine flexible when filling, improve
The measuring accuracy of liquid chlorine.
The purpose of the present invention is achieved through the following technical solutions:
A kind of plunger piston type valve core, including insert body and matched U-shaped valve seat, described insert body include valve rod and
Two sprues being disposed on valve rod, are provided with the circular cone that external diameter successively decreases downwards along valve rod axis direction on sprue lower surface
Section, conical section is set on the outer circle wall of valve rod, described valve seat horizontal positioned, and all has in two vertical sections of valve seat
The connection cavity matched with conical section, valve rod vertically runs through two described connection cavitys, circumferential at it along described conical section
Outer wall is provided with multiple fixture block, has the draw-in groove that multiple and described fixture block adapts, at described circular cone on connection cavity inner wall
The lower surface of section is fixed with sealing ring, and the external diameter of described sealing ring is more than the internal diameter of described connection cavity lower ending opening；Described
Valve rod be provided with two just to connection cavity lower ending opening baffle, described baffle epimere external diameter along described valve rod axis to
On successively decrease, and have multiple guiding gutter on its external wall along described baffle epimere circumference, the width of described guiding gutter is along along institute
State valve rod axis downward.
For in prior art, control spool and the most easily occur damming inaccuracy and the leakage problem that causes, send out
Bright existing spool is improved, on the premise of ensureing to control spool flexible, improve and control damming precisely of spool
Degree, to ensure liquid chlorine measuring accuracy in filling process, what the loss reducing liquid chlorine improved liquid chlorine simultaneously fills efficiency；Use
Time, in valve body, have liquid chlorine runner, and the valve seat horizontal positioned of U-shaped is arranged on the middle part of liquid chlorine runner so that entering of valve body
Mouth is by two the connection cavitys being opened on valve seat and outlet, and before filling, conical section contacts, simultaneously with connection cavity wall
Fixture block cooperates with draw-in groove so that two connection cavitys realize primary seal, and the sealing ring on conical section lower surface is then real
Now connect the secondary seal of cavity lower ending opening, by primary seal and secondary seal so that liquid chlorine runner is insulated completely
Become two parts, control spool to liquid chlorine storage tank and extraneous isolation effect to maintain；When filling, liquid chlorine is flowed into by import
Between U-shaped valve base inner wall and import constitute first paragraph runner in, now stir valve rod so that conical section with connect cavity wall it
Between be gradually disengaged, liquid chlorine then along connection cavity and conical section between gap enter into U-shaped valve seat outer wall and outlet between constitute
Second segment runner in, eventually pass outlet and be injected in transfer cask body.By the reciprocating motion of valve rod in the vertical direction, i.e.
Can realize the connection between liquid chlorine storage tank and transfer cask and opening and closing, and then quickly realize the essence of liquid chlorine flow during liquid chlorine filling
Really control, it is to avoid cause the leakage of liquid chlorine, to reach to ensure that liquid chlorine exists because of the damming not in time or damming low precision of liquid chlorine
Flexible when filling, improves the purpose of the measuring accuracy of liquid chlorine.
Wherein, valve rod moves until conical section with connect after cavity inner wall completely disengages from, liquid chlorine is quickly through connecting chamber
Body is flowed in second segment runner by first paragraph runner, and now the liquid chlorine in first paragraph runner can be because of under connection cavity above
End opening internal diameter is less and selects to be positioned at outflow in the connection cavity of lower section, and in first paragraph runner, the liquid chlorine of the overwhelming majority can be right
The valve interior wall of the connection cavity lower ending opening being just pointed to lower section in second segment runner forms intense impact, can lead time serious
Causing valve interior wall impaired by sharp impacts, inventor is provided with two on valve rod and just leads connection cavity lower ending opening
Flow block, and the epimere external diameter of described baffle successively decreases upward along valve rod axis, i.e. the lower end at connection cavity forms a circular cone
The guide face of shape so that the liquid chlorine in first paragraph runner is again divided into two plumes and goes out, i.e. first strand liquid chlorine is in the guiding of guide face
Lower flow out along at connection cavity lower ending opening above, and second strand of liquid chlorine is along the connection cavity lower ending opening being positioned at lower section
Place flows out, and second strand of liquid chlorine spreads apart to surrounding after flowing in second segment runner under the guiding of guide face, it is to avoid can
To a little carrying out constant impingement on valve interior wall, and then reduce the loss percentage of valve interior wall, ensure by first paragraph runner simultaneously
The flow branching in second segment runner two strands of liquid chlorines tends to balance, and the stress with two parts upper and lower in ensureing valve body is equal
Weighing apparatus, it is to avoid the lower section excessive wear of valve interior wall and reduce its service life.Further, have on guide face multiple leads
Chute can improve the water conservancy diversion effect in first paragraph runner and second segment runner, the width of guiding gutter along valve rod axially the most down
Being incremented by, i.e. at first strand of liquid chlorine when flowing out, first strand of liquid chlorine flow velocity in the guiding gutter that flow area gradually successively decreases can be by
Edge up height, i.e. guiding gutter to outside first strand of liquid chlorine arrange effect play booster action so that along above within the unit interval
Guide face flow out liquid chlorine flow increase；And when second strand of liquid chlorine flows out, gradually increasing at flow area of second strand of liquid chlorine
Flow velocity in the guiding gutter added can be gradually lowered, and the flowing velocity of second strand of liquid chlorine is played the work slowed down by guiding gutter the most now
With so that the liquid chlorine flow-reduction flowed out along the guide face being positioned at lower section within the unit interval, to reduce second strand of liquid chlorine to valve
The impact dynamics in internal portion.
The width of described fixture block successively decreases downwards along the axis direction of described valve rod.Fixture block coordinates so that conical section with draw-in groove
Increasing with the contact area connected between cavity wall, i.e. increase the sealing effectiveness of primary seal, the width of fixture block is along valve rod simultaneously
Axis direction successively decrease downwards, similarly connection cavity wall on draw-in groove groove width also successively decrease downwards along the axis direction of valve rod, i.e.
Can reduce the liquid chlorine residual quantity in draw-in groove when liquid chlorine runner is blocked, and fixture block with in the contact process of draw-in groove,
The deformation quantity that fixture block is squeezed and occurs can be restricted in the part that draw-in groove groove width is gradually reduced, i.e. fixture block and draw-in groove it
Between interaction force be incremented by along valve rod axially direction the most down, and then increase the sealing effectiveness of primary seal.
The longitudinal cross-section of described sealing ring is the U-shaped of horizontal positioned.As preferably, the longitudinal cross-section of sealing ring is U-shaped, i.e.
In the folding process of valve rod, sealing ring gradually contacts with the lower ending opening connecting cavity, until draw-in groove agrees with completely with fixture block,
Valve rod stops mobile, and now sealing ring occurs certain deformation that the lower end connecting cavity realizes secondary seal, and longitudinal cross-section
For U-shaped sealing ring with connect cavity occur mutually extrude time, the deformation of sealing ring outer circumference divided by its U-shaped portion and
Possess certain deformation space, i.e. prevent the part playing sealing function on sealing ring not result in internal action stress and concentrate
And impaired, to guarantee the stability of secondary seal, extend the service life of sealing ring simultaneously.
Described fixture block and sealing ring all use politef material.As preferably, liquid chlorine possesses active chemical
Matter, is provided simultaneously with corrosivity, and the general elastomeric material as sealing medium is shorter, easily for the service life under liquid chlorine environment
The phenomenon of hardening cracking occurs, and inventor selects politef material as fixture block and the raw material of sealing ring, utilizes
Its good decay resistance, to ensure to ensure primary seal and the stability of secondary seal in control valve, extends simultaneously
Fixture block and the service life of sealing ring, reduce the frequency that control valve inner part is changed.
The present invention compared with prior art, has such advantages as and beneficial effect:
1, the present invention reciprocating motion by valve rod in the vertical direction, can realize the connection between liquid chlorine storage tank and transfer cask
With opening and closing, and then quickly realize the accurate control of liquid chlorine flow during liquid chlorine filling, it is to avoid because of liquid chlorine dam not in time or
It is to dam low precision and cause the leakage of liquid chlorine, to reach to ensure the liquid chlorine flexible when filling, improves the metering of liquid chlorine
The purpose of precision；
2, the draw-in groove groove width on the connection cavity wall of the present invention is also successively decreased downwards along the axis direction of valve rod, i.e. to liquid chlorine runner
Can reduce the liquid chlorine residual quantity in draw-in groove when blocking, and fixture block is with the contact process of draw-in groove, fixture block is squeezed
And the deformation quantity occurred can be restricted in the part that draw-in groove groove width is gradually reduced, i.e. interaction between fixture block and draw-in groove
Power is being incremented by along the axial direction the most down of valve rod, and then increases the sealing effectiveness of primary seal；
3, the present invention selects politef material as fixture block and the raw material of sealing ring, utilizes the corrosion resistance that it is good
Can, to ensure to ensure primary seal and the stability of secondary seal in control valve, extend fixture block and sealing ring simultaneously
In service life, reduce the frequency that control valve inner part is changed.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of insert body；
Fig. 2 is the installation diagram of insert body and valve body.
Labelling and corresponding parts title in accompanying drawing:
1-valve body, 2-import, 3-retaining hole, 4-valve seat, 5-connection cavity, 51-draw-in groove, 6-insert body, 61-valve rod, 62-block up
Block, 63-conical section, 64-fixture block, 65-sealing ring, 66-baffle, 67-guiding gutter, 7-export.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment includes insert body 6 and matched U-shaped valve seat 4, described insert body 6
Including valve rod 61 and two sprues 62 being disposed on valve rod 61, sprue 62 lower surface is provided with external diameter along valve rod 61 axle
The conical section 63 successively decreased downwards in line direction, conical section 63 is set on the outer circle wall of valve rod 61, described valve seat 4 horizontal positioned,
And in two vertical sections of valve seat 4, all having the connection cavity 5 matched with conical section 63, valve rod 61 vertically runs through two institutes
State connection cavity 5, be provided with multiple fixture block 64 on its external wall along described conical section 63 circumference, connection cavity 5 inwall is opened
The draw-in groove 51 having multiple and described fixture block 64 to adapt, is fixed with sealing ring 65 in the lower surface of described conical section 63, described close
The external diameter of seal ring 65 is more than the internal diameter of described connection cavity 5 lower ending opening；Described valve rod 61 is provided with two just to connection chamber
The baffle 66 of body 5 lower ending opening, described baffle 66 epimere external diameter upwards successively decreases along described valve rod 61 axis, and leads described in edge
Stream block 66 epimere circumference has multiple guiding gutter 67 on its external wall, and the width of described guiding gutter 67 is along along described valve rod 61 axis
Downward.
For in prior art, control spool and the most easily occur damming inaccuracy and the leakage problem that causes, send out
Bright existing spool is improved, on the premise of ensureing to control spool flexible, improve and control damming precisely of spool
Degree, to ensure liquid chlorine measuring accuracy in filling process, what the loss reducing liquid chlorine improved liquid chlorine simultaneously fills efficiency；Use
Time, in valve body 1, have liquid chlorine runner, and valve seat 4 horizontal positioned of U-shaped is arranged on the middle part of liquid chlorine runner so that valve body 1
Import 2 is connected with exporting 7 by be opened on valve seat 4 two connection cavitys 5, before filling, conical section 63 with connect cavity 5 wall
Contact, fixture block 64 cooperates with draw-in groove 51 simultaneously so that two connect cavitys 5 and realize primary seal, and conical section 63 lower end
Sealing ring 65 on face then realizes connecting the secondary seal of cavity 5 lower ending opening, by primary seal and secondary seal so that
Liquid chlorine runner is insulated into two parts completely, controls spool to liquid chlorine storage tank and extraneous isolation effect to maintain；When filling,
Liquid chlorine is flowed between U-shaped valve seat 4 inwall and import 2 in the first paragraph runner constituted by import 2, now stirs valve rod 61,
Making conical section 63 and be gradually disengaged between cavity 5 wall with connecting, liquid chlorine then enters along the gap between connection cavity 5 and conical section 63
Enter in the second segment runner constituted between U-shaped valve seat 4 outer wall and outlet 7, eventually pass outlet 7 and be injected in transfer cask body.
By the reciprocating motion of valve rod 61 in the vertical direction, the connection between liquid chlorine storage tank and transfer cask and opening and closing can be realized, enter
And the accurate of liquid chlorine flow controls during quickly realizing liquid chlorine filling, it is to avoid damming not in time or damming precision because of liquid chlorine
Differ from and cause the leakage of liquid chlorine, to reach to ensure the liquid chlorine flexible when filling, improve the purpose of the measuring accuracy of liquid chlorine.
Wherein, valve rod 61 moves until conical section 63 with connect after cavity 5 inwall completely disengages from, liquid chlorine is quickly through company
Cavity body 5 is flowed in second segment runner by first paragraph runner, and now the liquid chlorine in first paragraph runner can be because of connection above
Cavity 5 lower ending opening internal diameter is less and selects to be positioned at outflow in the connection cavity 5 of lower section, and the overwhelming majority in first paragraph runner
Liquid chlorine can form intense impact to valve body 1 inwall of connection cavity 5 lower ending opening being just pointed to lower section in second segment runner,
Valve body 1 inwall can be caused impaired by sharp impacts time serious, inventor is provided with two just to connection chamber on valve rod 61
The baffle 66 of body 5 lower ending opening, and the epimere external diameter of described baffle 66 successively decreases upward along valve rod 61 axis, i.e. in connection chamber
The lower end of body 5 forms a cone shape guide face so that the liquid chlorine in first paragraph runner is again divided into two plumes and goes out, and i.e. first
Stock liquid chlorine flows out under the guiding of guide face at connection cavity 5 lower ending opening above, and second strand of liquid chlorine is along being positioned at
Flow out at connection cavity 5 lower ending opening of lower section, and second burst of liquid chlorine leading at guide face after flowing in second segment runner
Draw and lower spread apart to surrounding, it is to avoid to a little carrying out constant impingement on valve body 1 inwall, and then being subject to of valve body 1 inwall can be reduced
Loss rate, ensures that the flow being branched to two strands of liquid chlorines in second segment runner by first paragraph runner tends to balance, to ensure valve simultaneously
The stress equalization of upper and lower two parts in body 1, it is to avoid the lower section excessive wear of valve body 1 inwall and reduce its service life.Enter one
Step ground, the multiple guiding gutters 66 having on guide face can improve the water conservancy diversion effect in first paragraph runner and second segment runner
Really, the width of guiding gutter 66 being axially incremented by down along valve rod 1, i.e. at first strand of liquid chlorine when flowing out, first strand of liquid chlorine is at stream
Flow velocity in the guiding gutter 66 gradually successively decreased in logical cross section can gradually rise, i.e. guiding gutter 66 to outside first strand of liquid chlorine arrange effect rise
To booster action so that the liquid chlorine flow flowed out along guide face above within the unit interval increases；And at second strand of liquid
When chlorine flows out, the flow velocity in the guiding gutter 66 that flow area is gradually increased of second strand of liquid chlorine can be gradually lowered, the most now
The flowing velocity of second strand of liquid chlorine is played the effect slowed down by guiding gutter 66 so that along the water conservancy diversion being positioned at lower section within the unit interval
The liquid chlorine flow-reduction that surface current goes out, to reduce second strand of liquid chlorine to the impact dynamics within valve body 1.
The width of described fixture block 64 successively decreases downwards along the axis direction of described valve rod 61.Fixture block 64 made with coordinating of draw-in groove 51
Obtain conical section 63 and the contact area connected between cavity 5 wall increases, i.e. increase the sealing effectiveness of primary seal, simultaneously fixture block 64
Width successively decrease downwards along the axis direction of valve rod 61, similarly draw-in groove 51 groove width on connection cavity 5 wall is also along valve rod 61
Axis direction successively decreases downwards, i.e. can reduce the liquid chlorine residual quantity in draw-in groove 51, and fixture block when blocking liquid chlorine runner
64 with the contact process of draw-in groove 51, and the deformation quantity that fixture block 64 is squeezed and occurs can be gradually reduced in draw-in groove 51 groove width
Be restricted in part, i.e. interaction force between fixture block 64 and draw-in groove 51 is being passed along the axial direction the most down of valve rod 61
Increase, and then increase the sealing effectiveness of primary seal.
Further, being additionally provided with retreat stop block inside valve body 1, the upper surface of retreat stop block has just retaining hole to valve rod 61
3, during valve rod 61 moves down, the end of valve rod 61 can move along a straight line along retaining hole 3, it is to avoid liquid chlorine when filling to valve
Bar 61 and conical section 63 impact and cause valve rod 61 that circular runout occurs, to improve the control accuracy of insert body 6.
As preferably, the longitudinal cross-section of sealing ring 65 is U-shaped, and i.e. in the folding process of valve rod 61, sealing ring 65 is gradually
Contacting with the lower ending opening of connection cavity 5, until draw-in groove 51 agrees with completely with fixture block 64, valve rod 61 stops mobile, now seals
There is certain deformation and the lower end of connection cavity 5 realized secondary seal in ring 65, and the sealing ring 65 that longitudinal cross-section is U-shaped with
When connection cavity 5 occurs mutually to extrude, the deformation of sealing ring 65 outer circumference is divided by its U-shaped portion and possesses certain deformation
Space, i.e. prevent the part playing sealing function on sealing ring 65 do not result in internal action stress concentrate and impaired, with really
Protect the stability of secondary seal, extend the service life of sealing ring 65 simultaneously.
As preferably, liquid chlorine possesses active chemical property, is provided simultaneously with corrosivity, the general rubber as sealing medium
Glue material is shorter for the service life under liquid chlorine environment, the phenomenon of hardening cracking easily occurs, and inventor selects polytetrafluoroethyl-ne
Alkene material, as fixture block 64 and the raw material of sealing ring 65, utilizes the decay resistance that it is good, to ensure in control valve
Ensure primary seal and the stability of secondary seal, extend fixture block 64 and the service life of sealing ring 65 simultaneously, reduce control
The frequency that valve inner part processed is changed.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (4)
1. a plunger piston type valve core, including insert body (6) and matched U-shaped valve seat (4), it is characterised in that: institute
State insert body (6) and include valve rod (61) and two sprues (62) being disposed on valve rod (61), in sprue (62) lower end
Face is provided with the conical section (63) that external diameter successively decreases downwards along valve rod (61) axis direction, and conical section (63) is set in valve rod (61)
On outer circle wall, described valve seat (4) horizontal positioned, and all have in two vertical sections of valve seat (4) and conical section (63) phase
The connection cavity (5) coordinated, valve rod (61) vertically runs through two described connection cavitys (5), along described conical section (63) circumference
It is provided with multiple fixture block (64) on its external wall, connection cavity (5) inwall has and multiple adapts with described fixture block (64)
Draw-in groove (51), is fixed with sealing ring (65) in the lower surface of described conical section (63), and the external diameter of described sealing ring (65) is more than institute
State the internal diameter of connection cavity (5) lower ending opening；Described valve rod (61) is provided with two just to connection cavity (5) lower ending opening
Baffle (66), described baffle (66) epimere external diameter upwards successively decreases along described valve rod (61) axis, and along described baffle
(66) epimere circumference has multiple guiding gutter (67) on its external wall, and the width of described guiding gutter (67) is along along described valve rod (61)
Axis downward.
A kind of plunger piston type valve core the most according to claim 1, it is characterised in that: the width of described fixture block (64) is along described
The axis direction of valve rod (61) successively decreases downwards.
A kind of plunger piston type valve core the most according to claim 1, it is characterised in that: the longitudinal cross-section of described sealing ring (65)
U-shaped for horizontal positioned.
A kind of plunger piston type valve core the most according to claim 1, it is characterised in that: described fixture block (64) and sealing ring
(65) politef material is all used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729344.5A CN106246940B (en) | 2016-08-26 | 2016-08-26 | A kind of plunger piston type valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610729344.5A CN106246940B (en) | 2016-08-26 | 2016-08-26 | A kind of plunger piston type valve core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246940A true CN106246940A (en) | 2016-12-21 |
| CN106246940B CN106246940B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610729344.5A Expired - Fee Related CN106246940B (en) | 2016-08-26 | 2016-08-26 | A kind of plunger piston type valve core |
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| Country | Link |
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| CN (1) | CN106246940B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19747919A1 (en) * | 1996-10-31 | 1998-05-07 | Yamatake Honeywell Co Ltd | Valve for fluid flow pipe |
| CN2580222Y (en) * | 2002-11-06 | 2003-10-15 | 上海阀特流体控制阀门有限公司 | Self centering valve seat structure |
| CN101305227A (en) * | 2005-11-12 | 2008-11-12 | 图钦哈根有限公司 | Double seat valve |
| CN201763989U (en) * | 2010-08-20 | 2011-03-16 | 浙江伟星新型建材股份有限公司 | Valve core |
| CN202531869U (en) * | 2012-05-02 | 2012-11-14 | 郭海新 | Flexible-seal dual-valve-seat plunger adjusting valve |
| CN203214895U (en) * | 2013-03-20 | 2013-09-25 | 河北喜之郎食品有限公司 | Pneumatic angle seat valve |
| CN203272822U (en) * | 2013-04-01 | 2013-11-06 | 厦门力森电力设备有限公司 | Adjusting valve |
| CN103671985A (en) * | 2013-12-10 | 2014-03-26 | 重庆巨康建材有限公司 | Rotary control type stop valve |
| CN105626880A (en) * | 2016-03-10 | 2016-06-01 | 杭州佳能阀门有限公司 | Soft and hard dual-sealing regulation valve |
| CN205446756U (en) * | 2015-10-29 | 2016-08-10 | 中国电建集团上海能源装备有限公司 | Case and case, disk seat sub -assembly with improve annular groove structure |
-
2016
- 2016-08-26 CN CN201610729344.5A patent/CN106246940B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19747919A1 (en) * | 1996-10-31 | 1998-05-07 | Yamatake Honeywell Co Ltd | Valve for fluid flow pipe |
| CN2580222Y (en) * | 2002-11-06 | 2003-10-15 | 上海阀特流体控制阀门有限公司 | Self centering valve seat structure |
| CN101305227A (en) * | 2005-11-12 | 2008-11-12 | 图钦哈根有限公司 | Double seat valve |
| CN201763989U (en) * | 2010-08-20 | 2011-03-16 | 浙江伟星新型建材股份有限公司 | Valve core |
| CN202531869U (en) * | 2012-05-02 | 2012-11-14 | 郭海新 | Flexible-seal dual-valve-seat plunger adjusting valve |
| CN203214895U (en) * | 2013-03-20 | 2013-09-25 | 河北喜之郎食品有限公司 | Pneumatic angle seat valve |
| CN203272822U (en) * | 2013-04-01 | 2013-11-06 | 厦门力森电力设备有限公司 | Adjusting valve |
| CN103671985A (en) * | 2013-12-10 | 2014-03-26 | 重庆巨康建材有限公司 | Rotary control type stop valve |
| CN205446756U (en) * | 2015-10-29 | 2016-08-10 | 中国电建集团上海能源装备有限公司 | Case and case, disk seat sub -assembly with improve annular groove structure |
| CN105626880A (en) * | 2016-03-10 | 2016-06-01 | 杭州佳能阀门有限公司 | Soft and hard dual-sealing regulation valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246940B (en) | 2018-09-28 |
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