CN108825807A - A kind of rotation self-grind spool gate valve - Google Patents
A kind of rotation self-grind spool gate valve Download PDFInfo
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- CN108825807A CN108825807A CN201811000315.0A CN201811000315A CN108825807A CN 108825807 A CN108825807 A CN 108825807A CN 201811000315 A CN201811000315 A CN 201811000315A CN 108825807 A CN108825807 A CN 108825807A
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- plectane
- grind
- self
- special
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- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 20
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 34
- 238000007789 sealing Methods 0.000 abstract description 34
- 230000003028 elevating effect Effects 0.000 abstract description 9
- 238000005498 polishing Methods 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 7
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 24
- 238000010586 diagram Methods 0.000 description 15
- 210000003128 head Anatomy 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 239000010884 boiler slag Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003340 mental effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0263—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor using particular material or covering means
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
Abstract
The invention discloses a kind of rotation self-grind spool gate valve, the top of manual actuator is arranged in pneumatic actuator；Upper bracket is arranged in external in manual actuator；It is bolted lower bracket below upper bracket, is fixedly connected with valve deck in the lower square bolt of lower bracket；Valve body is bolted below valve deck；In valve inner, self-grind core assembly is set；The inside of valve seat is arranged in self-grind core assembly；Self-grind core assembly connect with valve rod by enlarged head and second shaft coupling is used to connect with pneumatic actuator and manual actuator；The technical effects of the invention are that, the elevating movement of valve rod directly with movable valve plug realize to the cutting of pipeline medium be connected to, while the spool is with valve rod straight line elevating movement, effect by opposite center axis thereof imbalance torque, around central axis rotation occurs for spool, and then continuous grinding and polishing sealing surface, significantly extend valve service life.
Description
Technical field
The present invention relates to gate valve more particularly to a kind of rotation self-grind spool gate valves.
Background technique
In the material systems such as petrochemical industry, coal chemical industry, polysilicon, power plant's ash disposal, mud, boiler slag removal, medium is mostly
The solids such as graininess, powdery, hardness height (HRC >=60), temperature height (>=500 DEG C), and valve opening is frequent, thus, erosion,
Serious wear.Traditional valve of linear motion uses symmetrical structure in structure, cannot achieve between spool and valve seat
The function of spool self-regeneration cannot achieve the realization of rotation such a function of self-grind for spool, in existing valve
Once spool is impaired in door, it will be unable to be restored to original function, spool can be caused to leak.In addition, spool is mostly in difference
The hard alloy such as Si Taili of built-up welding thickness about 2mm on matrix make to match the surfacing hardness maintenance composition sealing pair of HBS ≈ 50,
Effect between sealing pair is the sliding friction of translation form, and frictional force is big, seriously damages sealing surface；And wear-resistant Si Taili
Hard alloy thickness is smaller, and hardness is no more than HRC48, it is difficult to bear the higher graininess of hardness, powdery medium it is macrocyclic anti-
Multiple effect, in the case where granule medium " squeezes into " sealing surface, it is easier to cause significantly to reveal generation.If be mingled in medium
High temperature and high pressure gas, the caused flash distillation of high pressure gas, cavitation damage are especially prominent, directly influence valve service performance and longevity
Life, it is difficult to meet the needs of Chemical Manufacture.
Summary of the invention
In place of according to above-mentioned the deficiencies in the prior art, the object of the invention realizes a kind of rotation self-grind
Spool gate valve, which is characterized in that including pneumatic actuator, manual actuator, upper bracket, valve rod, lower bracket, valve deck, valve
Body, self-grind core assembly；The top of the manual actuator is arranged in the pneumatic actuator；In the hand
Upper bracket is arranged in the external of dynamic executing agency；Lower bracket is bolted below upper bracket, it is solid in the lower square bolt of lower bracket
Surely valve deck is connected；Valve body is bolted below valve deck；In valve inner, self-grind core assembly is set；The self-grind
The inside of valve seat is arranged in core assembly；The self-grind core assembly is connected by valve rod enlarged head and the valve rod
It connects；The valve rod passes through upper bracket, lower bracket, valve deck, valve body, and using second shaft coupling and the pneumatic actuator
It is connected with the manual actuator.
Further, the self-grind core assembly further include hoisting frame, left plectane, right plectane, special-shaped axis, upper clamp plate,
Lower clamp plate, spring；In the groove being arranged above the enlarged head insertion hoisting frame being arranged on the valve rod；In the upper of hoisting frame
Upper clamp plate in square set；The both ends of upper clamp plate are respectively embedded in the upper end of left plectane, right plectane；Left plectane, right plectane are around setting
In the two sides of hoisting frame；A lateral special-shaped through-hole is opened up in the intermediate lateral of hoisting frame, a special-shaped axis is run through in special-shaped through-hole；
The position for the internal diameter circle that special-shaped axis and left plectane, right plectane surround is in eccentric setting, in the upper and lower of special-shaped axis, in hoisting frame
On respectively open up a coil spring hole；One spring is respectively set in spring eye；Lower clamp plate is symmetrically fixed in the lower end screw of hoisting frame；Under
One end of clamping plate is embedded into left plectane, in right plectane.
Further, the centre of the special-shaped axis is regular hexagon shape；A diamond shape is respectively arranged in the both ends of the special-shaped axis
The edge of shape, in one plane of upper and lower each setting；In the upper of the right side of the special-shaped axis.Under it is each setting be less than the abnormity
The platform on the diamond shape side of axis.
Further, the pneumatic actuator further includes piston/cylinder, piston, piston rod, and piston/cylinder is fixed on institute
On the upper bracket stated, piston is set inside piston/cylinder；If piston further includes the piston sheet of dry plate；Piston sheet is fixed on piston
One end of bar；The other end second shaft coupling of piston rod is connect with the valve rod.
Further, the manual actuator further includes handwheel, handwheel drive rod, bevel pinion, large helical gear, bearing
Set, plane bearing；One end of handwheel drive rod connects handwheel, and bevel pinion is arranged on the other end of handwheel drive rod；Small helical teeth
It takes turns and is engaged with the large helical gear being arranged on the valve rod；Large helical gear is inserted on the valve rod；Under large helical gear
Side's setting latch segment, fixed large helical gear is on the valve rod；Bearing holder (housing, cover) is set in the lower section of latch segment, fastening is arranged in axis
Plane bearing below bearing sleeve；Plane bearing resists the bottom of the upper bracket.
Further, on the valve rod, filler is set in the junction of lower bracket and valve deck；It is arranged in the top of filler
The upper end of valve deck is arranged in filler pressing sleeve, filler, and to the stem ring around setting.
It further, is high hardness alloy ASTM A276440C in the material of the left plectane, right plectane.
Further, in the surface spraying weld nickel-base alloy of the valve seat, thickness is not less than 1.5mm.
The technical effects of the invention are that when the present invention is applied in petrochemical industry, coal chemical industry, polysilicon, power plant's ash disposal, mud
When in the high abrasion field of the material systems such as slurry, boiler slag removal, unique rotation self-grind mainly for conventional valves not
Foot, takes appropriate measures, and solves the problems, such as that the sealing pair service life generally existing in industry is insufficient.The elevating movement of valve rod is direct
With movable valve plug realize to the cutting of pipeline medium be connected to, while the spool is with valve rod straight line elevating movement, by opposite
Around central axis rotation, and then constantly grinding and polishing sealing surface occur for the effect of center axis thereof imbalance torque, spool.Valve
Door is longer using the time, and sealing performance is better, significantly improves conventional valves service performance, significantly extends valve service life.
Detailed description of the invention
Fig. 1 is half section structure diagram of the invention.
Fig. 2 be A-A of the invention to spool schematic diagram.
Fig. 3 is the schematic diagram of spool of the invention.
Fig. 4 be spool of the invention B to schematic diagram.
Fig. 5 be spool of the invention A to schematic diagram.
Fig. 6 is the main view direction schematic diagram of hoisting frame of the invention.
Fig. 7 is the schematic diagram of left view direction of hoisting frame of the invention.
Fig. 8 is the schematic diagram of left plectane of the invention.
Fig. 9 is the schematic diagram of right plectane of the invention.
Figure 10 is the schematic diagram of upper clamp plate of the invention.
Figure 11 is the schematic diagram of lower clamp plate of the invention.
Figure 12 is the schematic diagram of special-shaped axis of the invention and left plectane, right plectane eccentric setting.
Figure 13 is the movement schematic diagram of special-shaped axis of the invention and left plectane, right plectane.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
A kind of rotation self-grind spool gate valve, including pneumatic actuator are provided in conjunction with shown in attached drawing 1, in the present embodiment
25, manual actuator 24, upper bracket 21, valve rod 4, lower bracket 18, valve deck 8, valve body 1, self-grind core assembly 2；Pneumatically hold
The top of manual actuator 24 is arranged in row mechanism 25；Upper bracket 21 is arranged in external in manual actuator 24；In upper branch
The lower section of frame 21 is bolted lower bracket 18, is fixedly connected with valve deck 8 in the lower square bolt of lower bracket 18；In the lower section spiral shell of valve deck 8
It tethers and connects valve body 1；Self-grind core assembly 2 is set inside valve body 1；The inside of valve seat 3 is arranged in self-grind core assembly 2；
Self-grind core assembly 2 is connect by enlarged head 5 with valve rod 4；Valve rod 4 passes through upper bracket 21, lower bracket 18, valve deck 8, valve body
1, and connect using second shaft coupling 22 with pneumatic actuator 25 and manual actuator 25；In such a configuration, it solves
The problem of spool abrasion, meanwhile, it is uneven by opposite center axis thereof while spool is with valve rod straight line elevating movement
Around central axis rotation, and then constantly grinding and polishing sealing surface occur for the effect of torque, spool.Valve is longer using the time,
Sealing performance is better, significantly improves conventional valves service performance, significantly extends valve service life.
In conjunction with shown in attached drawing 1, attached drawing 2 and attached drawing 6- attached drawing 11, self-grind core assembly 2 further includes hoisting frame 201, Zuo Yuan
Plate 2021, right plectane 2022, special-shaped axis 203, upper clamp plate 205, lower clamp plate 206, spring 204；The rotary table 41 being arranged on valve rod 4 is embedding
Enter in the groove 2011 being arranged above hoisting frame 201；Upper upper clamp plate 205 is covered in the top of hoisting frame 201；The two of upper clamp plate 205
End is respectively embedded in the upper end of left plectane 2021, right plectane 2022；Left plectane 2021, right plectane 2022 are circumferentially positioned at promotion
The surrounding of frame 201；A cross through hole is opened up in the intermediate lateral of hoisting frame 201, a special-shaped axis 203 is run through in through-hole；Abnormity
The position for the internal diameter circle that axis 203 and left plectane 2021, right plectane 2022 surround is in eccentric setting, such as the e of institute's standard in attached drawing 2；
In the upper and lower of special-shaped axis 3, a coil spring hole 2012 is respectively opened up on hoisting frame 201；Spring is respectively set in spring eye 2012
204；Lower clamp plate 206 is symmetrically fixed in the lower end screw of hoisting frame 201；One end of lower clamp plate 206 be embedded into left plectane 2021,
In right plectane 2022.In conjunction with shown in attached drawing 12, the shape in the internal diameter circle that left plectane 2021, right plectane 2022 surround of special-shaped axis 203
At the function of self-grind.
Spring 204 guarantees that left plectane 2021, right plectane 2022 and hoisting frame 201 maintain corresponding gap, i.e. maintenance part
Between elasticity, left plectane 2021 can also be provided, right plectane 2022 is adjacent to the valve seat 3 of respective side respectively, guaranteed the smallest pre-
Clamp force guarantees the sealing performance under the conditions of operating on low voltage.Left plectane 2021, right plectane 2022 are located at the two of hoisting frame 201
The raised outer rim of side, the former two is embedded in the through-hole of hoisting frame 201.The profiled holes of hexagon are provided in the through-hole of hoisting frame 201,
The profiled holes are just distributed with the osculant face of special-shaped axis 203 and are closed, and are limited the rotation of special-shaped axis 203, guarantee abnormity
203, the axis play but not rotations of circumferencial direction with runner direction, and the rear and front end shaped face of special-shaped axis is
Cylinder embody symmetrical inclined cut, only direction non-specular surface is symmetrical, but just on the contrary, and be inserted in respectively left plectane 2021,
Among the blind hole of right plectane 2022；Upper clamp plate 205 on the lower clamp plate 206 and hoisting frame 201 of hoisting frame 201 is respectively in left plectane
2021, the upper and lower part of right plectane 2022 is clamped, and cooperatively prevents left plectane 2021, right plectane 2022 with valve body 1
Phenomenon is fallen off, to constitute a compact entirety.Special-shaped axis 203 is passed through from the T-slot of hoisting frame 201, both ends point
The upper limb of left plectane 2021 and right plectane 2022 is not clamped, and 206 1 sections of lower clamp plate are connected by screw to hoisting frame 201
Lower end, in addition one section of lower edge for clamping left plectane 2021 and right plectane 2022 respectively.The enlarged head of 4 lower part of valve rod point is i.e.
41 side of rotary table when valve rod 4 moves along a straight line, drives self-grind core assembly 2 therewith to being mechanically embedding in the T-slot of hoisting frame 201
Acted accordingly, self-grind core assembly 2 under the action of valve rod 4, perpendicular to valve flowing channel direction carry out rise or
Person's descending motion, and then realize connection and cutting for pipeline medium, left plectane 2021, right plectane 2022 are in spring 204
Under the collective effect of medium in the eyes, left plectane 2021, the right plectane 2022 of downstream are close to valve seat 3 and realize sealing function,
Belong to automatic-sealed type.The shaft coupling 22 on 4 top of valve rod is closely connected by the output shaft of screw thread and pneumatic actuator 25
It is connected together, when the movement of the vertical direction of the output shaft of pneumatic actuator 25, the promotion with ovable valve stem 4 or decline fortune
It is dynamic.The top smooth bar part of valve rod 4 realizes the sealing of valve rod 4 using filler 10, and filler 10 is by filler pressing sleeve 13 in bolt
Collective effect realizes the low leakage structure of valve, prevents the leakage of valve lumen medium, in addition other than pneumatic actuator 25 also
It is configured with manual actuator 24, once pneumatic actuator 25 breaks down, can be converted extremely by manual actuator 24
Geared system operates valve, ensures the needs of commercial plant smoothly produced.
In conjunction with attached drawing 2, shown in attached drawing 12, left plectane 2021, the right plectane 2022, hoisting frame of self-grind core assembly 2
201, special-shaped axis 203 and spring 204 collectively form, and motion principle is shown in the movement schematic diagram in attached drawing 13.Left plectane 2021, the right side
Plectane 2022 uses high hardness alloy ASTM A276 440C, and 1020 DEG C of heat treatment temperature, hardness is up to HRC58 or more, valve seat
3 surface spraying weld nickel-base alloys, effective thickness are not less than 1.5mm, and hardness is not less than HRC55, both ensure that the dimension between sealing surface
Certain difference of hardness is held, and effective hardness of sealing surface is greatly improved, much higher than the hardness of conventional stellite, the latter
Hardness substantially in HRC45 hereinafter, other foreign matters for entering sealing surface can be crushed, prevent the damage of sealing surface.Special-shaped axis
The left plectane 2021 of 203 both ends abnormity axial symmetry, right plectane 2022 blind round hole in, and the Cylindrical symmetry of special-shaped axis 203
The both ends direction of shaped face made of beveling is relative to promotion Block direction just on the contrary, non-specular surface is symmetrical, in special-shaped axis 203
Between partially cooperate profiled holes position in 201 through-hole of hoisting frame, the rotation of special-shaped axis 203 is limited, guarantees special-shaped axis
203 play but not rotations of circumferencial direction with runner direction, the specific portions at both ends maintain specific side always
To the deflection generation without larger angle, keep the effect for left plectane 2021, right plectane 2022 is missing to maintain
Vertical direction guarantees that two plectanes maintain specific sub- direction of rotation always；Valve rod 4 under the driving of pneumatic actuator 25,
It can only be along the rising of specific direction linear reciprocation or descending motion.The both ends cylinder arc radius of special-shaped axis 203 is less than left circle
Blind hole 2~6mm of internal diameter of plate 2021, right plectane 2022, and end is also symmetrically chamfer, so the two centre of effort begins
It will not be overlapped eventually, there are an eccentric distance e, the two remains two dynamics, tangent off-centre operation, due to eccentric distance e
In the presence of left plectane 2021, right plectane 2022 are always by the effect relative to center axis thereof imbalance torque.Left plectane
2021, right plectane 2022 will surround the generation rotation of center axis respectively, and continuous grinding and polishing sealing surface, structure diagram is shown in attached
Figure 13.
Valve carries out closing motion, firstly, the output shaft of pneumatic actuator 25 or manual actuator 24 carries out down
Drop movement, under the effect of end shaft coupling 22 on it of valve rod 4, band ovable valve stem 4 acts straight down, and the lower end of valve rod 4 increases
The restriction for the self-grind core assembly 2 that head is connected by T-slot, the not displacement of horizontal direction only occur under vertical direction
Drop movement, when 4 linear vertical of valve rod moves downward, hoisting frame 201 moves straight down in the drive lower edge of valve rod 4, is mentioning
Under the drive for rising the special-shaped axis 203 that frame 201 is socketed, corresponding movement also occurs therewith for left plectane 2021.What hoisting frame 201 was socketed
203 circular section highest point of special-shaped axis contacts and generates effect with the cylindrical hole wall line of the left plectane 2021 in side first,
And left plectane 2021 is driven to move downward.Since contact line is not overlapped with the central axis of left plectane 2021 in vertical direction,
There is eccentric distance e, and the two arc radius part maintains the gap of 2~6mm, and 203 end of special-shaped axis also symmetrical inclined is cut away
Two rim portions, there are anisopleual spaces.The elevating movement of valve rod 4 drives hoisting frame 201 to decline therewith, drives therewith different
Shape axis 203 is in contact and has an effect with the left plectane 2021 in the side first, this high hardness alloy plectane 202A is by special-shaped axis 2-
The 03 wobbler action power applied, eccentric moment caused by the wobbler action power promote here left plectane 2021 around center axis thereof
Rotationally clockwise；It, will be under the action of pipe medium pressure, by under medium once left plectane 2021 acts
Swim the frictional force applied in valve seat 3.The frictional force and 4 direction of motion of valve rod on the contrary, hinder that left plectane 2021 moves downward, side
To frictional force straight up, due to the presence of eccentric distance e, left 2021 left side active area of plectane is greater than right side active area,
So left side frictional force is greater than right side frictional force, thus also generate relative to the clockwise torque of center axis thereof, produce
The raw clockwise rotation for surrounding center axis thereof；Under the collective effect of two clockwise direction torques, left plectane
2021 around its own central axis rotationally clockwise.
So left plectane 2021, the active force by 4 direction of valve rod downwards, eccentric, generation one are clockwise partially
Mental and physical efforts square；Meanwhile the frictional force downward, not of uniform size from the direction that sealing pair applies that left plectane 2021 is subject to, partially
Heart effect line of force is not overlapped with frictional force center, since there are eccentric distance es, under the action of the frictional force, will be made
The left plectane 2021 of this side is rotationally clockwise.Due to the special designing of eccentric structure e, left plectane 2021 is also by hoisting frame
Caused by 201, the effect for the power that special-shaped axis 203 applies under the action of the active force, equally also generates clockwise power
Square, left plectane 2021 generates in turn to be rotated clockwise.I.e. left plectane 2021 is under the drive of special-shaped axis 203, not only along valve rod 4
Direction vertical direction lowering action, but also under the action of unbalanced force caused by eccentric structure, around left plectane 2021
Rotation occurs for central axis.
Correspondingly, the beveling type face that the direction of both ends of special-shaped axis 203 is just opposite, leads to the right side of 201 other side of hoisting frame
Plectane 2022, the active force by 4 direction of valve rod downwards, eccentric, but generates an anticlockwise eccentric moment；Meanwhile
The frictional force downward, not of uniform size from the direction that sealing pair applies that right plectane 2022 is subject to, the effect of wobbler action power
Line is not overlapped with frictional force center, since there are eccentric distance es, under the action of the frictional force, will make the right plectane of this side
2022 rotate in an anti-clockwise direction.Due to the special designing of eccentric structure e, right plectane 2022 is by abnormity caused by hoisting frame 2-1
The effect for the power that axis 203 applies, under the comprehensive function of the active force, generates anticlockwise torque, right plectane 2022 is in turn
Generation rotates counterclockwise.Right plectane 2022 not only declines along 4 direction vertical direction of valve rod dynamic under the drive of hoisting frame 201
Make, but also under the action of unbalanced force caused by eccentric structure, rotation occurs for the central axis around right plectane 2022.
The both sides of hoisting frame 201, which act on, two identical left plectanes 2021, right plectanes 2022, only hoisting frame 201
In 203 both ends direction of special-shaped axis just on the contrary, special-shaped axis 203 will will receive the anti-work of left plectane 2021 and right plectane 2022
With the two reactions are equal in magnitude, and only direction is just on the contrary, caused torque is just cancelled out each other, so hoisting frame
201 will keep vertical direction movement with valve rod 4, prevent valve rod 4 from deflecting, strong defencive function is provided to filler 10,
The sealing performance for effectively extending filler 10, lowers possible disclosure risk.
Valve carries out breakdown action, firstly, the output shaft of pneumatic actuator 25 or manual actuator 24 carries out
Elevator is dynamic, and under the effect of end shaft coupling 22 on it of valve rod 4, band ovable valve stem 4 acts straight up, and the lower end of valve rod 4 increases
The restriction for the spool 2 that head is connected by T-slot, the not displacement of horizontal direction only occur the vertical motion of vertical direction, work as valve
When bar 4 moves straight up, hoisting frame 201 moves straight up in the drive lower edge of valve rod 4, is socketed in hoisting frame 201 different
Under the drive of shape axis 203, corresponding movement also occurs therewith for left plectane 2021.The special-shaped axis 203 that hoisting frame 201 is socketed is arc-shaped
Section highest point contacts with the cylindrical hole wall line of left plectane 2021 first and generates effect, and drives left plectane 2021 upwards
Movement.Since contact line is not overlapped with the central axis of left plectane 2021 in vertical direction, there are eccentric distance e, and the two circle
Arc radius part maintains the gap of 2~6mm, and 203 end of special-shaped axis also symmetrical inclined cuts away two rim portions, and it is not right that there are two sides
The space of title.The elevating movement of valve rod 4 drives hoisting frame 201 to rise with it, therewith drive special-shaped axis 203 first with the left plectane
2021 are in contact and have an effect, the wobbler action power that this left plectane 2021 is applied by special-shaped axis 203, the wobbler action power
Caused eccentric moment promotes the left plectane 2021 of this side to surround center axis thereof rotationally clockwise；Once left plectane 2021
Act, will under the action of pipe medium pressure, by medium downstream valve seat 3 apply frictional force.The frictional force with
4 direction of motion of valve rod on the contrary, hinder that left plectane 2021 moves downward, the frictional force of direction straight down, due to eccentric distance e
In the presence of, left 2021 right side active area of plectane is greater than left side active area, so right side frictional force is greater than left side frictional force, thus
Also generate relative to the clockwise torque of center axis thereof, generate clockwise turn for surrounding center axis thereof
It is dynamic；Under the collective effect of two clockwise direction torques, left plectane 2021 around its own central axis rotationally clockwise.
So left plectane 2021, the active force by 4 direction of valve rod upwards, eccentric, generation one are clockwise partially
Mental and physical efforts square；Meanwhile the frictional force downward, not of uniform size from the direction that sealing pair applies that the left plectane 2021 is subject to,
Wobbler action line of force is not overlapped with frictional force center, due to there are eccentric distance es will under the action of the frictional force
Make the left plectane 2021 of this side rotationally clockwise.Due to the special designing of eccentric structure e, left plectane 2021 is also promoted
Caused by frame 201, the effect for the power that special-shaped axis 203 applies under the action of the active force, equally also generates clockwise power
Square, left plectane 2021 generates in turn to be rotated clockwise.I.e. the left plectane 2021 is under the drive of special-shaped axis 203, not only along valve
Bar direction vertical direction lowering action, but also under the action of unbalanced force caused by eccentric structure, surround left plectane 2021
Central axis occur rotation.
Correspondingly, the beveling type face that the direction of both ends of special-shaped axis 203 is just opposite, leads to the right side of 201 other side of hoisting frame
Plectane 2022, the active force by 4 direction of valve rod upwards, eccentric, but generates an anticlockwise eccentric moment；Meanwhile
The frictional force upward, not of uniform size from the direction that sealing pair applies that right plectane 2022 is subject to, the effect of wobbler action power
Line is not overlapped with frictional force center, since there are eccentric distance es, under the action of the frictional force, will make the right plectane of this side
2022 rotate in an anti-clockwise direction.Due to the special designing of eccentric structure e, right plectane 2022 is by abnormity caused by hoisting frame 201
The effect for the power that axis 203 applies, under the comprehensive function of the active force, generates anticlockwise torque, right plectane 2022 is in turn
Generation rotates counterclockwise.That is the right plectane 2022 not only declines along valve rod direction vertical direction dynamic under the drive of hoisting frame
Make, but also under the action of unbalanced force caused by eccentric structure, rotation occurs for the central axis around right plectane 2022.
The both sides of hoisting frame 201, which act on, two identical left plectanes 2021, right plectanes 2022, only hoisting frame 201
In the both ends special-shaped axis 2-03 direction just on the contrary, special-shaped axis 203 is anti-by the left plectane 2021 that will receive, right plectane 2022
Effect, the two reactions are equal in magnitude, and only direction is just on the contrary, caused torque is just cancelled out each other, so being promoted
Frame 201 will keep vertical direction movement with valve rod 4, prevent valve rod 4 from deflecting, strong protection function is provided to filler 10
Can, effectively extend the sealing performance of filler 10, lowers possible disclosure risk.
In conclusion the left plectane 2021 at 203 both ends of special-shaped axis, right plectane 2022 are either steered off by open state
State, or from closed state to during open state transformation, the plectanes of two sides maintains the respectively same rotation always respectively
Turn direction, and just on the contrary, the direction of rotation of the two opposite directions ensure that respective unique direction of rotation, it can also be effectively
Guarantee that valve rod maintains vertical direction without the generation of deflection always, effective 10 defencive function of filler is provided.
So left plectane 2021, right plectane 2022 are under the driving of valve rod 4, it is on the one hand perpendicular along the direction of motion of valve rod 4
Directly move downward, on the other hand, also along left plectane 2021, the center rotating of right plectane 2022, so, left plectane 2021, the right side
Plectane 2022 can constantly push the granule medium on motion path open under compound motion effect, effectively prevent solid particle
The accumulation and precipitating of medium.Under the rotary motion effect of plectane, continuous polishing, grinding seal surface keep sealing performance more next
It is better, while the foreign matter on the motion path of left plectane 2021, right plectane 2022 can also be pushed open, play the role of " scraper ",
Prevent foreign matter from entering, protection sealing surface；In addition, even if foreign matter enters, it, can also under the action of self-grind 2 rotation of core assembly
To crush foreign matter, the destruction of sealing surface is prevented, thus realize the polishing to sealing surface, meanwhile, for any possible sealing surface
Damage the function of on-line automatic reparation may be implemented, with the increase of valve switch number, valve sealing face performance is got over instead
It is better to come, and overturns conventional valves sealing surface completely once being damaged the shortcomings that can not repairing.
Furthermore when valve rod 4 drives hoisting frame 201 to carry out corresponding sports, first under the drive of valve rod 4, promoted
The special-shaped axis 203 that further driving relative position is fixed of frame 201, and the both ends abnormity end of special-shaped axis 203 and plectane blind hole
Contact point be not located at the top or the bottom of blind hole, but relatively two sides of center line, therefore form and tied in bias
Under structure effect, left plectane 2021, right plectane 2022 not instead of directly do not realize linear motion by whole drag, first by left plectane
2021, after right plectane 2022 deflects certain angle, then pull left plectane 2021, right plectane 2022 realize valve promoted or under
Drop movement, i.e., prejudicially relatively rotate first by left plectane 2021, right plectane 2022 first, then slide again, can effectively subtract
Minor valve operational torque.According to above-mentioned structure, special-shaped axis 203 forms rotation in left plectane 2021, right plectane 2022 and grinds certainly
Mill, work while self-grind core assembly 2 is with valve rod straight line elevating movement, by opposite center axis thereof imbalance torque
With playing self-grind core assembly 2 around central axis and rotation, and then the effect of constantly grinding and polishing sealing surface occur.
In conjunction with shown in attached drawing 3- attached drawing 5, the centre of special-shaped axis 203 is positive six deformation shapes；The both ends of special-shaped axis 203 are respectively arranged
The edge of one diamond shaped, in one plane 2031 of upper and lower each setting；Upper and lower each setting on the right side of special-shaped axis 203 is less than described
Special-shaped axis 203 diamond shape side platform 2033.
In conjunction with shown in attached drawing 2, pneumatic actuator 25 further includes piston/cylinder 251, piston 253, piston rod 252, piston
Cylinder body 251 is fixed on upper bracket 21, and piston 253 is arranged inside piston/cylinder 251；If piston 253 further includes the work of dry plate
Patch 2531；Piston sheet 2531 is fixed on one end of piston rod 252；The other end of piston rod 252 second shaft coupling 22 and institute
The valve rod 4 stated connects.
In conjunction with shown in attached drawing 2, manual actuator 24 further include handwheel 241, handwheel drive rod 242, bevel pinion 243,
Large helical gear 247, bearing holder (housing, cover) 245, plane bearing 246；One end of handwheel drive rod 242 connects handwheel 241, handwheel drive rod
Bevel pinion 243 is set on 242 other end；Bevel pinion 243 is engaged with the large helical gear 247 being arranged on valve rod 4；Greatly
Helical gear 246 is inserted on valve rod 4；Latch segment 244 is set in the lower section of large helical gear 246, fixed large helical gear 247 is in valve rod 4
On；Bearing holder (housing, cover) 245 is set in the lower section of latch segment 244, the plane bearing 246 below bearing holder (housing, cover) 245 is arranged in fastening；Plane axis
Hold 246 bottoms for resisting upper bracket 21.
Above-mentioned structure is that pneumatic actuator 25 and manual actuator 24 are realized and automatically and manually promoted or reduced
The structure of valve rod 4.Realize the up and down motion of valve rod 4.Valve rod 4 drives self-grind core assembly 2 to move up and down, to ensure that
While self-grind core assembly 2 is with valve rod straight line elevating movement, by the effect of opposite center axis thereof imbalance torque,
It plays self-grind core assembly 2 and rotation, and then the effect of constantly grinding and polishing sealing surface occurs around central axis.
In order to realize above-mentioned effect, on the valve rod 4, filler is set in the junction of lower bracket 18 and valve deck 8
10；Filler pressing sleeve 13 is set in the top of filler 10, the upper end of valve deck 8 is arranged in filler 10, and surround to the valve rod 4
Setting.
In terms of material in order to realize rotation self-grind spool gate valve, left plectane 2021, right plectane 2022 material be height
Hardness alloy ASTM A276, in the surface spraying weld nickel-base alloy of valve seat 3, thickness is not less than 1.5mm.
The present invention is applicable not only to parallel double-flashboard gate valve, is equally also suitable Wedge type double gate board gate valve, changes only
It is merely the variation of sealing surface angle, corresponding change occurs for remaining region of interest.The invention patent technology is suitable for height,
In, the various pressure ratings of low pressure, the gate valve of various specifications, throttle valve, blowdown valve etc.；Being applicable in maximum temperature is 950 DEG C；The technology
It is particularly suitable for frequently opening and closing the materials such as particle, wear requirements high polysilicon, coal chemical industry, power plant's ash disposal, mud, boiler slag removal
System significantly improves valve service performance, hence it is evident that extends valve service performance and service life.
As the preferred embodiment of the invention, it is obvious to a person skilled in the art that showing the present invention is not limited to above-mentioned
The details of exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it can be with other specific
Form realizes the present invention and protection scope of the present invention.Therefore, in all respects, the embodiments should be taken as
It is exemplary, and be non-limiting, the scope of the invention being indicated by the appended claims rather than by the foregoing description, therefore purport
It is including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.Right should not be wanted
Any appended drawing reference in asking is construed as limiting the claims involved.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of rotation self-grind spool gate valve, which is characterized in that including pneumatic actuator, manual actuator, upper bracket,
Valve rod, lower bracket, valve deck, valve body, self-grind core assembly；The pneumatic actuator, which is arranged in, described manually performs machine
The top of structure；Upper bracket is arranged in external in the manual actuator；Lower bracket is bolted below upper bracket,
The lower square bolt of lower bracket is fixedly connected with valve deck；Valve body is bolted below valve deck；In valve inner, self-grind valve is set
Core assembly；The inside of valve seat is arranged in the self-grind core assembly；The self-grind core assembly is increased by valve rod
Head is connect with the valve rod；The valve rod pass through upper bracket, lower bracket, valve deck, valve body, and using shaft coupling with it is described
Pneumatic actuator connected with the manual actuator.
2. a kind of rotation self-grind spool gate valve as described in claim 1, which is characterized in that the self-grind core assembly
It further include hoisting frame, left plectane, right plectane, special-shaped axis, upper clamp plate, lower clamp plate, spring；The increasing head being arranged on the valve rod
Portion is embedded in the groove being arranged above hoisting frame；Upper upper clamp plate is covered in the top of hoisting frame；The both ends of upper clamp plate are respectively embedded in
The upper end of left plectane, right plectane；Left plectane, right plectane are circumferentially positioned at the two sides of hoisting frame；It is opened in the intermediate lateral of hoisting frame
If a lateral special-shaped through-hole, runs through a special-shaped axis in special-shaped through-hole；The internal diameter circle that special-shaped axis and left plectane, right plectane surround
Position respectively opens up a coil spring hole in the upper and lower of special-shaped axis in eccentric setting on hoisting frame；Respectively it is arranged in spring eye
Spring；Lower clamp plate is symmetrically fixed in the lower end screw of hoisting frame；One end of lower clamp plate is embedded into left plectane, in right plectane.
3. a kind of rotation self-grind spool gate valve as claimed in claim 2, which is characterized in that the centre of the special-shaped axis is
Positive six become side shape；The edge of a diamond shaped is respectively arranged in the both ends of the special-shaped axis, in one plane of upper and lower each setting；Described
Special-shaped axis right side it is upper and lower it is each setting be less than the special-shaped axis diamond shape side platform.
4. a kind of rotation self-grind spool gate valve as described in claim 1, which is characterized in that the pneumatic actuator is also
Including piston/cylinder, piston, piston rod, piston/cylinder is fixed on the upper bracket, and piston is arranged inside piston/cylinder；
If piston further includes the piston sheet of dry plate；Piston sheet is fixed on one end of piston rod；The other end second shaft coupling of piston rod
It is connect with the valve rod.
5. a kind of rotation self-grind spool gate valve as described in claim 1, which is characterized in that the manual actuator is also
Including handwheel, handwheel drive rod, bevel pinion, large helical gear, bearing holder (housing, cover), plane bearing；One end of handwheel drive rod connects hand
It takes turns, bevel pinion is set on the other end of handwheel drive rod；Bevel pinion is nibbled with the large helical gear being arranged on the valve rod
It closes；Large helical gear is inserted on the valve rod；Latch segment is set in the lower section of large helical gear, fixed large helical gear is in the valve
On bar；Bearing holder (housing, cover) is set in the lower section of latch segment, the plane bearing below bearing holder (housing, cover) is arranged in fastening；Plane bearing resists described
Upper bracket bottom.
6. a kind of rotation self-grind spool gate valve as claimed in claim 5, which is characterized in that on the valve rod, under
Filler is arranged in the junction of bracket and valve deck；Filler pressing sleeve is set in the top of filler, the upper end of valve deck is arranged in filler, and right
The stem ring is around setting.
7. a kind of rotation self-grind spool gate valve as claimed in claim 2, which is characterized in that the left plectane, right plectane
Material be high hardness alloy ASTM A276 440C.
8. a kind of rotation self-grind spool gate valve as described in claim 1, which is characterized in that sprayed on the surface of the valve seat
Nickel-base alloy is welded, thickness is not less than 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000315.0A CN108825807A (en) | 2018-08-30 | 2018-08-30 | A kind of rotation self-grind spool gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000315.0A CN108825807A (en) | 2018-08-30 | 2018-08-30 | A kind of rotation self-grind spool gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108825807A true CN108825807A (en) | 2018-11-16 |
Family
ID=64150891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811000315.0A Pending CN108825807A (en) | 2018-08-30 | 2018-08-30 | A kind of rotation self-grind spool gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329316A (en) * | 2023-10-25 | 2024-01-02 | 浙江联大阀门有限公司 | Parallel double-flashboard gate valve |
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| CN2755371Y (en) * | 2004-10-10 | 2006-02-01 | 天津市圣恺工业技术发展有限公司 | Reciprocating and sliding ceramic sealed sluice valve with double flashboard |
| CN202392140U (en) * | 2011-11-17 | 2012-08-22 | 四川格林流体控制设备有限公司 | Wear-resistant disc valve |
| CN202418681U (en) * | 2011-12-31 | 2012-09-05 | 苏州安特威阀门有限公司 | Metal hard sealing disc valve |
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| CN206530722U (en) * | 2017-03-07 | 2017-09-29 | 许成伟 | Direct acting rotates self-grind disc valve |
| CN208764355U (en) * | 2018-08-30 | 2019-04-19 | 上海凯科阀门制造有限公司 | A kind of rotation self-grind spool gate valve |
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| JP2000161505A (en) * | 1998-11-26 | 2000-06-16 | Hitachi Valve Kk | Eccentric rotary valve |
| CN2755371Y (en) * | 2004-10-10 | 2006-02-01 | 天津市圣恺工业技术发展有限公司 | Reciprocating and sliding ceramic sealed sluice valve with double flashboard |
| CN202392140U (en) * | 2011-11-17 | 2012-08-22 | 四川格林流体控制设备有限公司 | Wear-resistant disc valve |
| CN202418681U (en) * | 2011-12-31 | 2012-09-05 | 苏州安特威阀门有限公司 | Metal hard sealing disc valve |
| CN203979453U (en) * | 2014-05-30 | 2014-12-03 | 上海华通阀门有限公司 | High abrasion plate valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117329316A (en) * | 2023-10-25 | 2024-01-02 | 浙江联大阀门有限公司 | Parallel double-flashboard gate valve |
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