CN109826970A - A kind of dark rod flat plate valve of no flange and bolted bonnet (BB) structure - Google Patents
A kind of dark rod flat plate valve of no flange and bolted bonnet (BB) structure Download PDFInfo
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- CN109826970A CN109826970A CN201910232363.0A CN201910232363A CN109826970A CN 109826970 A CN109826970 A CN 109826970A CN 201910232363 A CN201910232363 A CN 201910232363A CN 109826970 A CN109826970 A CN 109826970A
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- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 16
- 210000004907 gland Anatomy 0.000 claims description 13
- 239000000806 elastomer Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 238000005266 casting Methods 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a kind of no flange and the dark rod flat plate valves of bolted bonnet (BB) structure, including valve body, flashboard and driving device, the valve body is equipped with flow channel and flow pass, valve chamber is equipped between flow channel and flow pass, flashboard is equipped in valve chamber, flashboard is equipped with valve component close to flow channel end and flow pass end, it is characterized in that, the valve body is made of complete closed valve chamber lower valve body and associated valve deck, the self-energized seal device (4) is lip shape, its section configuration is inverted U-shaped, it is formed by sealed outer ring (41) and sealing inner ring (42) stack combinations, two sides are respectively equipped with guide plate (8) at flashboard (9) the up and down motion position, reinforcing rib (105) equipped with the design of several horizontal distributions in the lower valve body (111), with good seal performance etc. Advantage.
Description
Technical field
The present invention relates to valve field, belong to fluid and control class universal machine product, is widely used in petroleum, chemical industry, natural
The pipeline fluid of the industries such as gas conveys and control；The dark rod flat plate valve of specifically a kind of no flange and bolted bonnet (BB) structure.
Background technique
The classification of gate valve is classified with the structure type of flashboard, is broadly divided into wedge-type flashboard and run-in index flashboard two at present
Major class, that is, Wedge Gate Valves and parallel gate valve (abbreviation flap type), it is parallel with similar existing program rising stem (RS.) of the invention or dark bar
Formula slide valve mainly has valve body, valve deck, valve component, run-in index flashboard (with deflector hole or without deflector hole), valve rod, valve rod and lock
Plate connector (rising stem (RS.)), valve rod and valve cover chamber airtight and watertight padding component, valve deck bracket (rising stem (RS.)), valve stem nut, switch handwheel or valve
Door operators and valve body valve deck connection bolt etc. are constituted.The valve body and valve deck are casting and forming, and valve body is cylindrical or oblate
Tubular simultaneously has valve latus rectum adapter tube and connecting flange, and group is bolted with connecting flange and bonnet flange in valve body top
At closeding valve cavity to accommodate the internals such as flashboard and valve component, valve component is mounted on valve body cavity two and takes at inner end, flashboard dress
Enter between two valve components, is cast with guide rail in channel lumen two sides in valve chamber, it is bright to control the offset of flashboard switch motion process
Stem valve bar is connected by connector with flashboard, and non-rising stem valve bar is connected by valve stem nut, and valve rod passes through valve deck, and valve deck is matched with valve rod
It is packed into airtight and watertight padding between conjunction and guarantees that valve stem seal, a pair of of valve component are affixed to flashboard to folder under the action of one group of spring force and realize
Sealing is equipped with valve deck bracket (rising stem (RS.)) on valve deck, and frame upper is packed into valve stem nut, and the trapezoidal thread segment in valve rod top screws in valve
Stem nut (rising stem (RS.)), handwheel or valve driver, which are inserted in drive valve stem nut and rotate counterclockwise or clockwise, is threaded into its valve rod
Flashboard is driven to move up (left hand thread) Open valve or move down closing valve；Rising stem flat valve switch movement is valve rod
The nut rotation band related flashboard of ovable valve stem moves up and down, the valve rod liter that valve rod passes through leakage without rotation, the position of the switch of valve
Demotion is set can be obvious, and the movement of dark rod flat plate threshold switch is that valve rod rotation drives the related flashboard of valve stem nut in valve chamber to go up and down
Movement, for valve stem nut without rotation, the flashboard position of the switch of valve can not be obvious in the outside of valve.
The main problem of the prior art: 1. structure is more complex, and valve body middle chamber top has ring flange, and valve deck is also with method
The semi-cavity structure of blue disk, it is that bolt and nut is covered by number by valve body middle chamber upper flange and bonnet flange pair that valve body is connect with valve cover chamber
Pressure connects, and the sealing between flange is that the power of enforcement of bolt is leaned on to realize, when bolt is without uniformly pre-tightening or loosening one by one, between flange
Leakage may be generated；2. it is that plane connects folder that valve body middle chamber upper flange, which connect contact sealing surface with bonnet flange, two flanges
Between without cooperation positioning spigot, by each bolt hole position up and down to just when assembly, dimensional discrepancy is big, not can guarantee valve rod after assembly
Axis intersects with conduit, that is, valve component latus rectum axis, and generating offset will affect occurring to neutral and valve rod eccentric wear for flashboard
Leakage；3. flashboard limition orientation slideway of upper lower switch motion process flashboard two sides in valve body is cast with valve body consubstantiality
, since casting guide rail can not machine, then there is the uncontrollable of casting dimensional tolerance, keeps flashboard side and slideway gap size inclined
Greatly, cooperate permitted dimensional tolerance range beyond connection between valve rod and flashboard, when flashboard up and down motion process excursions side is led
Rail can cause valve rod skew and airtight and watertight padding eccentric wear and generate leakage；4. the limit that flashboard downlink closes valve is by valve rod and lock
Plate connection T-block touch valve seat installation aperture passage outer circle on edge, due to the position be casting hair side, can not machine add
Work causes the switch of valve to limit inaccurate so size is uncontrollable, and especially electric operator can not be unified to set up limit position
It sets；5. existing dark rod flat plate valve is generally without position indication, the position of the switch state of valve can not identify from the appearance.
Summary of the invention
The purpose of the present invention is to provide a kind of no flange and the dark rod flat plate valves of bolted bonnet (BB) structure, existing to solve
There is the problems in technology.
To achieve the above object, the invention provides the following technical scheme: a kind of no flange and bolted bonnet (BB) structure
Dark rod flat plate valve, including valve body, flashboard and driving device, the valve body are equipped with flow channel and flow pass, flow into logical
It is equipped with valve chamber between road and flow pass, is equipped with flashboard in valve chamber, flashboard is equipped with close to flow channel end and flow pass end
Screw thread mouth on valve component, valve rod one end and flashboard constitutes screw connection structure, and the other end is pierced by valve body and is indicated by screw rod
Device is connect with driving device, which is characterized in that the valve body is made of complete closed lower valve body and associated valve deck
Valve chamber, wherein the lower valve body is connect suitable for reading for sleeping " U " word lipped configuration with valve deck, and the lower valve body is long oblate tubular,
It is equipped with lip shape mouth, gland contact platform, gland contact platform and boss positioning spigot, the gland at the top of the lower valve body and contacts platform position
In lip shape mouth center, the boss positioning spigot is located at valve deck contact countertop center；The valve deck is mounted in lip shape mouth, institute
Valve deck outside dimensions is stated greater than lip shape mouth internal orifice size, valve deck outer rim upper surface is contacted with baseplane in lip shape mouth, and in the two
Sealing ring is equipped at contact position, bonnet central is equipped with the concentric counterbore that positioning disk locating slot and valve rod hole are constituted；The positioning
Disk is mounted on valve deck by holding screw and contacts on platform, and the positioning pan bottom is equipped with end face positioning convex platform, top is equipped with instruction
Device sleeve positioning convex platform, positioning disk center are equipped with positioning disk valve rod hole and constitute concentric counter bore structure with bearing groove, and the end face is fixed
Position boss matches cooperation positioning with the boss positioning spigot on lower valve body lip shape top, and the end face positioning convex platform is mounted on institute
It states in the locating slot of bonnet central, and is equipped with exterior seal ring, endface position in the cooperation side of end face positioning convex platform and locating slot
Place is equipped with self-energized seal device, while the positioning disk and valve deck being strained and fixed by holding screw, makes its positioning disk bottom
End surface positioning convex platform is inserted into concentric cooperation in the locating slot of bonnet central, screws holding screw, makes valve deck outer rim upper end
Baseplane completely attaches in face and lip shape mouth, and valve body and valve deck is made to constitute complete closed valve chamber.
Using above technical scheme, valve body of the invention is connect suitable for reading for sleeping " U " word lipped configuration with valve deck, and valve deck is same
Be it is long oblate, when assembly the oblique side of valve deck need to be made its projection size shorten narrow less than valve body lip shape internal orifice length shaft size with
Civilian dress enters at valve body lip shape mouth, and valve body lip shape mouth inner cavity is integrally entered to valve deck and is balanced again, close in the outer rim of valve deck at this time
In sealing groove and valve rod mounting hole has been charged into valve bonnet seal circle and lip shape self-tightening seal ring, and positioning disk is packed into valve body lip shape top
The Internal hole positioning seam allowance of dome is matched with positioning side surface positioning convex platform, and in the same intracardiac aperture and bottom dome of positioning disk
It is packed into O-ring in hole, screws in interior hexagonal fastening screw and fastens positioning disk, level pull-up valve deck makes it position pan bottom dome slotting
Enter concentric cooperation in the valve rod mounting hole of bonnet central, screw interior hexagonal pre-loading screw, makes transverse plane in its valve deck outer rim
It is completely attached to valve body lip shape mouth inner plane, the valve bonnet seal circle in valve bonnet seal slot is completely in preload compressive state, at this time
Valve body and valve deck constitute complete closed valve chamber；Due to the oblate no flange of length according to the present invention and it is bolted valve
The technical solution of lid structure is vertical by mode group as previously described with the non-flanged sleeping U-shaped lip shape mouth in associated valve body upper end
It is realized at a complete closed valve chamber, the gluing, sealing power between valve deck and valve body is completed by previous bolt external force,
Lifting valve deck pre-loading screw when assembly upwards completely attaches to transverse plane and valve body lip shape mouth inner plane in its valve deck outer rim, is
It is in the sealing ring in valve bonnet seal slot and pre-tightens compressive state, make it have initial sealing ability, and it is required when operating
Sealing force is realized by pressure medium in valve chamber, and sealing force enhances with the raising of pressure medium.
As the further preferred embodiment of the present invention, the self-energized seal device is lip shape, and section configuration is inverted U-shaped
Structure is formed by sealed outer ring and sealing inner ring stack combinations, and sealed outer ring is nonmetallic materials, is times in rubber or PTFE
It anticipates one kind, sealing inner ring is U-shaped sheet metal spring, and the interior outer lip of self-energized seal device is made to be adjacent to valve rod and exit orifice always
Wall.
Using above technical scheme, valve stem seal according to the present invention its section of lip shape self-tightening seal ring technical solution
Shape be it is inverted U-shaped, lip-shaped ring exterior material can be equipped with U-shaped sheet metal spring for rubber or PTFE etc. on the inside of lip shape, spring is made
With making, outer lip is adjacent to valve rod always in it and outer hole wall guarantees the initial sealing power of two-side sealing, the higher self-sealing of pressure medium
Power is stronger, and filled O-ring is the pre- anti-seal of double insurance, and the technical solution sealed reliable, valve rod torque is small, substitutes material filling type
Sealing.
As the further preferred embodiment of the present invention, the valve component includes valve cup ring, the first valve seat O-ring, second
Valve seat O-ring, sealing ring and elastomer, wherein the outer of valve cup ring is arranged in the first valve seat O-ring, the second valve seat O-ring
On side, valve cup ring is equipped with sealing ring close to flashboard end, is equipped with several close to the flow channel end of valve body and flow pass end
Elastomer, described elastomer one end are located in the valve seat slot on valve cup ring, and the other end is contacted with body cavity wall, makes sealing ring end
Face is affixed to flashboard always.
Using above technical scheme, valve component of the present invention is placed between two valve components in flashboard, and two valve components exist
Valve base sealing end face is made to be affixed to flashboard always on folder flashboard under the action of the spring force of one group of each tail portion, valve seat can be in the change of spring
It is moved within the scope of shape along channel direction, there is piston effect, it may be assumed that with the raising of pipe medium pressure, between valve seat and flashboard
Seal pressure is with enhancing.
As the further preferred embodiment of the present invention, two sides are respectively equipped with guide plate at flashboard up and down motion position,
Two pieces of guiding plate bodys are separately mounted on the flow channel and flow channel flange positioning spigot of lower valve intracoelomic cavity upstream and downstream,
And the fit clearance of flashboard two sides and guide plate is can be controlled within 0.5mm.
Using above technical scheme, flashboard guide plate technical solution according to the present invention be with workpiece guide rail substitute with
Toward non-machinable casting guide rail, machine and numerical control bender is cut by laser using modern metal plate technology, steel plate is cut
Bending and forming is cut, the body cavity upstream and downstream that bending guide plate is packed into processing is flanked on Pipe Flange positioning spigot, flashboard two sides
The fit dimension precision of side and bending guide plate is can be controlled within 0.5mm, flashboard can be made precisely to move up and down, in addition, guiding
Along being also only off-position when flashboard downlink is closed in the level of plate, i.e., when dextrorotation handwheel closes valve, flashboard downlink, in valve chamber
The baseplane that valve stem nut grows flashboard caliper portion touches and closes in place in guide plate level along i.e. flashboard.
As the further preferred embodiment of the present invention, the screw rod instruction device includes indicator and instruction needle sleeve, institute
It states valve rod upper section and is additionally provided with instruction screw thread, the instruction needle sleeve is sleeved on valve rod upper section, and indicator cartridges sides are equipped with instruction
Slot, the instruction slot is parallel with valve rod, and described indicator one end is located in instruction slot, and the indicator other end is revolved equipped with inner screw sheath
On instruction screw thread, the instruction needle sleeve is fixed on positioning disk by fastener；The working thread is trapezoidal thread, institute
Stating instruction screw thread is fine thread, indicates that the screw pitch of screw thread is less than the screw pitch of working thread；And the indicator set on positioning disk
Cylinder positioning convex platform is packed into lower bearing in hole, and is fixed with bearing gland, by rotation drive device driving stem, realizes that flashboard moves
Dynamic truncation channel.
Using above technical scheme, its principle of ono-rising-stem valve position indication technical solution according to the present invention is
With the conversion of valve stroke distance and valve rod screw pitch, show that valve rod turnning circle is multiplied by scaled when turning off or on valve
Fine thread screw pitch, be greater than obtained shortening distance length valve rod top process fine thread, and screw in a band refer to
The nut for showing needle mixes up the switch proportional positions with flashboard with position, then shows the sleeve set slotted with anti-rotation with indicator with one
It is attached to valve rod ratio thread segment, carries out position of the switch groove mark, fixes sleeve, the so very short distance of use are in proportion accurately
Show valve traveled distance distance and valve locating for the position of the switch, the outside dimension height of valve increases limited.
As the further preferred embodiment of the present invention, the reinforcing rib of several horizontal distributions design is equipped in the lower valve body.
Using above technical scheme, reinforcing rib design technical solution is wanted meeting intensity in valve body according to the present invention
It is beautiful, light and handy from casting technique and smooth in appearance under the premise of asking to consider for reinforcing rib to be arranged into valve chamber, it is outer in use
Shape compact dimensions save space.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
Fig. 1 is sectional view one of the invention；
Fig. 2 is sectional view two of the invention；
Fig. 3 is the view A-A in Fig. 2；
Fig. 4 is valve body schematic diagram；
Fig. 5 is gland detail view；
Fig. 6 is lip shape self-tightening sealing structural schematic diagram；
Fig. 7 is switch indicating device schematic diagram；
Fig. 8 is the main view of valve component of the present invention；
Fig. 9 is that figure is cutd open on a left side for valve component of the present invention；
Figure 10 is valve cover structure figure；
Figure 11 is the structural schematic diagram of guide plate；
In figure: 1- valve body, 111- lower valve body, 102- boss positioning spigot, 103- lip shape mouth, 104- gland contact platform,
105- reinforcing rib, 2- valve deck, 201- locating slot, 202- valve rod hole, 3- positioning disk, the end face 301- positioning convex platform, 302- indicator
Sleeve positioning convex platform, 303- positioning disk valve rod hole, 304- bearing groove；
4- self-energized seal device, 5- exterior seal ring, 6- bearing, 7- sealing ring, 8- guide plate, 9- flashboard, 10- valve seat group
Part, 1001- valve cup ring, the first valve seat of 1002- O-ring, the second valve seat of 1003- O-ring, 1004- sealing ring, 1005- elastomer,
11- valve rod, 1101- indicate screw thread, 1102- trapezoidal thread, 12- screw rod instruction device, 121- indicator, 122- indicator set
Cylinder, 13- driving device, 14- holding screw.
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 described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In conjunction with shown in Fig. 1,2,4,9, the dark rod flat plate valve of a kind of no flange and bolted bonnet (BB) structure, including valve body
(1), flashboard (9) and driving device (13), the valve body (1) are equipped with flow channel and flow pass, flow channel and stream
Valve chamber is equipped between channel out, is equipped with flashboard (9) in valve chamber, flashboard (9) is equipped with close to flow channel end and flow pass end
Screw thread mouth on valve component (10), valve rod (11) one end and flashboard constitutes screw connection structure, and it is logical that the other end is pierced by valve body (1)
Screw rod instruction device (12) is crossed to connect with driving device (13), it is characterised in that: the valve body (1) by lower valve body (111) and with
Its valve deck (2) to match constitutes complete closed valve chamber, wherein the lower valve body (111) connect with valve deck (2) it is suitable for reading be sleeping
" U " word lipped configuration, the lower valve body (111) are long oblate tubular, are equipped with lip shape mouth at the top of the lower valve body (111)
(1003), gland contact platform (1004), gland contact platform (1004) and boss positioning spigot (1002), the gland contact platform
(1004) it is located at lip shape mouth (1003) center, the boss positioning spigot (1002) is located in valve deck contact platform (1004) top surface
Centre；The valve deck (2) is mounted in lip shape mouth (1003), and valve deck (2) outside dimensions is greater than lip shape mouth (1003) internal orifice ruler
Very little, valve deck (2) outer rim upper surface is contacted with lip shape mouth (1003) interior baseplane, and sealing ring is equipped at the two contact position
(7), the concentric counterbore that valve deck (2) center is equipped with positioning disk locating slot (201) and valve rod hole (202) is constituted；The positioning disk (3)
It is mounted in valve deck contact platform (1004) by holding screw (14), positioning disk (3) bottom is equipped with end face positioning convex platform
(301), top is equipped with indicator sleeve positioning convex platform (302), and positioning disk (3) center is equipped with positioning disk valve rod hole (303) and axis
It holds slot (304) and constitutes concentric counter bore structure, the end face positioning convex platform (301) and the boss on lower valve body (111) lip shape top are fixed
Position seam allowance (1002) matches cooperation positioning, and the end face positioning convex platform (301) is mounted on to the positioning at the valve deck (2) center
In slot (201), and exterior seal ring (5) are equipped in the cooperation side of end face positioning convex platform (301) and locating slot (201), end face position
It sets place and is equipped with self-energized seal device (4), while the positioning disk (3) and valve deck (2) being tensed admittedly by holding screw (24)
It is fixed, make concentric in the locating slot (201) at its positioning disk (3) bottom end face positioning convex platform (301) insertion valve deck (2) center match
It closes, screws holding screw (24), completely attach to valve deck (2) outer rim upper surface and lip shape mouth (1003) interior baseplane, make valve body
Complete closed valve chamber is constituted with valve deck.
In the present embodiment, valve body of the invention (1) is connect suitable for reading for sleeping " U " word lipped configuration, valve deck with valve deck (2)
(2) be all it is long oblate, need to tiltedly side make its projection size shorten the lip to narrow less than lower valve body (111) by valve deck (2) when assembly
The interior length shaft size of shape mouth (103) integrally enters lower valve to be packed at the lip shape mouth (103) of lower valve body (111), to valve deck (2)
Lip shape mouth (103) inner cavity of body (111) is balanced again, at this time in the outer fringe seal slot of valve deck (2) and valve rod hole has been charged into
Positioning disk (3) are packed into the Internal hole positioning of lower valve body (111) lip shape top dome by sealing ring (7) and self-energized seal device (4)
Seam allowance (102) is matched with positioning disk (3) upper surface positioning convex platform (301), and fixed in the concentric indicator sleeve of positioning disk (3)
It is packed into O-ring in position boss (302) and bottom positioning disk valve rod hole (303), screws in interior hexagonal fastening screw and fastens positioning disk
(3), horizontal pull-up valve deck (2) makes the valve rod hole at its positioning disk (3) bottom positioning disk valve rod hole (303) insertion valve deck (2) center
(202) concentric cooperation in screws interior hexagonal pre-loading screw, makes transverse plane and lower valve body (111) in its valve deck (2) outer rim
Lip shape mouth (103) inner plane completely attaches to, and the sealing ring (7) in valve deck (2) seal groove is completely in preload compressive state, at this time
Valve body and valve deck constitute complete closed valve chamber；Due to the oblate no flange of length according to the present invention and it is bolted valve
The technical solution of lid structure is vertical by mode group as previously described with the non-flanged sleeping U-shaped lip shape mouth in associated valve body upper end
At a complete closed valve chamber come what is realized, the gluing, sealing power between valve deck (2) and valve body (1) is not by previous bolt external force
It completes, when assembly lifts valve deck (2) pre-loading screw upwards makes the lip of transverse plane and lower valve body (111) in its valve deck (2) outer rim
Shape mouth (103) inner plane completely attaches to, and is to be in the sealing ring (7) in valve deck (2) seal groove to pre-tighten compressive state, makes its tool
There is initial sealing ability, and required sealing force is realized by pressure medium in valve chamber when operating, sealing force is with Jie
The raising of matter pressure and enhance.
In conjunction with shown in Fig. 2, Fig. 6, in order to realize the sealing of replacement, the self-energized seal device (4) is lip shape,
Section configuration is inverted U-shaped, is formed by sealed outer ring (41) and sealing inner ring (42) stack combinations, and sealed outer ring (41) is non-
Metal material, for any one in rubber or PTFE, sealing inner ring (42) is U-shaped sheet metal spring, makes self-energized seal
The interior outer lip of device is adjacent to valve rod and outer hole wall always；Valve stem seal lip shape self-tightening seal ring technical solution in the present embodiment
Its section configuration be it is inverted U-shaped, lip packing outer ring (41) exterior material can be for rubber or PTFE etc., in lip packing inner ring (42)
Side is equipped with U-shaped sheet metal spring, and spring effect makes its interior outer lip be adjacent to valve rod (11) and outer hole wall always to guarantee that bilateral is close
The initial sealing power of envelope, pressure medium is higher, and self-sealing power is stronger, and the technical solution sealed reliable, valve rod torque is small, and substitution is filled out
The sealing of material formula.
In conjunction with shown in Fig. 1 and Fig. 8, in order to realize zero leakage sealing effect, the valve component (10) includes valve cup ring
(101), the first valve seat O-ring (102), the second valve seat O-ring (103), sealing ring (104) and elastomer (105), wherein institute
State the first valve seat O-ring (102), the second valve seat O-ring (103) is arranged on the lateral surface of valve cup ring (101), valve cup ring
(101) sealing ring (104) are equipped with close to flashboard (9) end, are equipped with close to the flow channel end of valve body (1) and flow pass end several
A elastomer (105), described elastomer (105) one end are located at the valve seat slot (1001) on valve cup ring (101) Nei, the other end and valve
The contact of body (1) internal chamber wall, makes sealing ring (104) end face be affixed to flashboard (9) always；Two valves are placed in flashboard (9) in the present embodiment
Between holder assembly (10), two valve components (10) are under the action of the spring force of the one group of elastomer (105) in each tail portion to folder flashboard
(9) it is affixed to valve base sealing end face always flashboard (9), valve component (10) can be in the deformation range of spring along channel direction
It is mobile, there is piston effect, it may be assumed that the seal pressure with the raising of pipe medium pressure, between valve component (10) and flashboard (9)
With enhancing.
In conjunction with shown in Fig. 2,3,10, two sides are respectively equipped with guide plate (8) at flashboard (9) the up and down motion position, and two pieces
Guide plate (8) body is separately mounted to the flow channel of lower valve body (111) inner cavity upstream and downstream and the positioning of flow channel flange stops
On mouth, and the fit clearance of flashboard (9) two sides and guide plate (8) is can be controlled within 0.5mm.It is with processing in the present embodiment
The previous non-machinable casting guide rail of part guide rail substitution, is cut by laser machine and numerical control bender using modern metal plate technology
Cutting and bending forming is carried out to steel plate, it is fixed that valve body (1) inner cavity upstream and downstream that bending guide plate (8) are packed into processing is flanked Pipe Flange
On the seam allowance of position, the fit dimension precision of the guide plate (8) of flashboard (9) two sides and bending is can be controlled within 0.5mm, can make lock
Plate (9) precisely moves up and down, in addition, working as in the level of guide plate (8) along only off-position when being also the closing of flashboard (9) downlink
When dextrorotation driving device (13) closes valve, flashboard (9) downlink, while valve chamber inner valve stem (11) nut grows flashboard caliper portion
Baseplane touch in guide plate (8) level along the closing of i.e. flashboard (9) in place.
In conjunction with shown in Fig. 2,7, the screw rod instruction device (12) includes indicator (121) and instruction needle sleeve (122), institute
It states valve rod (11) upper section and is additionally provided with instruction screw thread (1101), the instruction needle sleeve (122) is sleeved on valve rod (11) upper section, indicates
Needle sleeve (122) side is equipped with instruction slot (1221), and the instruction slot (1221) is parallel with valve rod (11), the indicator
(121) one end is located in instruction slot (1221), and indicator (121) other end is equipped with inner screw sheath and is spun on instruction screw thread (1101)
On, the instruction needle sleeve (122) is fixed on positioning disk (3) by fastener；The working thread (1102) is trapezoidal spiral shell
Line, the instruction screw thread (1101) are fine thread, and the screw pitch of instruction screw thread (1101) is less than the screw pitch of working thread (1102)；
And lower bearing (6) are packed into indicator sleeve positioning convex platform (302) hole on positioning disk (3), and are fixed with bearing gland, are led to
Rotation drive device (13) driving stem (11) is crossed, realizes flashboard (9) mobile truncation channel；The principle of the present embodiment is with valve
The conversion of stroke distances and valve rod (11) screw pitch obtains when turning off or on valve valve rod (11) turnning circle multiplied by contracting in proportion
Small fine thread screw pitch processes fine thread on valve rod top with obtained shortening distance length is greater than, and screws in a band
The nut of indicator (121) mixes up the switch proportional positions with flashboard (9) with position, then is shown and prevented with band indicator (121)
Instruction slot (1221) set for turning on slot is attached to valve rod (11) ratio thread segment, carries out position of the switch groove and identifies, fixes sleeve, this
The very short distance of sample accurately show in proportion valve traveled distance distance and valve locating for the position of the switch, valve it is outer
Dimensional height increases limited.
As shown in Fig. 2, beautiful, light and handy from casting technique and smooth in appearance under the premise of in order to meet intensity requirement consider,
Reinforcing rib (105) equipped with the design of several horizontal distributions in the lower valve body (111), outer dimension is compact in use, saves
Space.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (6)
1. the dark rod flat plate valve of a kind of no flange and bolted bonnet (BB) structure, including valve body (1), flashboard (9) and driving dress
It sets (13), the valve body (1) is equipped with flow channel and flow pass, and valve chamber, valve are equipped between flow channel and flow pass
Intracavitary to be equipped with flashboard (9), flashboard (9) is equipped with valve component (10) close to flow channel end and flow pass end, valve rod (11)
Screw thread mouth on one end and flashboard constitutes screw connection structure, the other end be pierced by valve body (1) by screw rod instruction device (12) with
Driving device (13) connection, it is characterised in that: the valve body (1) has been made of lower valve body (111) and associated valve deck (2)
Whole closed valve chamber, wherein the lower valve body (111) connect suitable for reading for sleeping " U " word lipped configuration with valve deck (2), under described
Valve body (111) is long oblate tubular, and lip shape mouth (1003), gland contact platform (1004), pressure are equipped at the top of the lower valve body (111)
Lid contact platform (1004) and boss positioning spigot (1002), gland contact platform (1004) are located at lip shape mouth (1003) center,
The boss positioning spigot (1002) is located at valve deck contact platform (1004) top surface center；
The valve deck (2) is mounted in lip shape mouth (1003), and valve deck (2) outside dimensions is greater than lip shape mouth (1003) internal orifice ruler
Very little, valve deck (2) outer rim upper surface is contacted with lip shape mouth (1003) interior baseplane, and sealing ring is equipped at the two contact position
(7), the concentric counterbore that valve deck (2) center is equipped with positioning disk locating slot (201) and valve rod hole (202) is constituted；
The positioning disk (3) is mounted in valve deck contact platform (1004) by holding screw (14), and positioning disk (3) bottom is set
There are end face positioning convex platform (301), top to be equipped with indicator sleeve positioning convex platform (302), positioning disk (3) center is equipped with positioning moushroom valve
Rod aperture (303) constitutes concentric counter bore structure, the end face positioning convex platform (301) and lower valve body (111) lip shape with bearing groove (304)
The boss positioning spigot (1002) on top matches cooperation positioning, and the end face positioning convex platform (301) is mounted on the valve deck
(2) in the locating slot (201) at center, and external seal is equipped in the cooperation side of end face positioning convex platform (301) and locating slot (201)
It encloses (5), is equipped with self-energized seal device (4) at endface position, while the positioning disk (3) and valve deck (2) are passed through into clamp screw
Nail (24) is strained and fixed, and makes the locating slot (201) at its positioning disk (3) bottom end face positioning convex platform (301) insertion valve deck (2) center
In concentric cooperation, screw holding screw (24), keep valve deck (2) outer rim upper surface and lip shape mouth (1003) interior baseplane complete
Contact makes valve body and valve deck constitute complete closed valve chamber.
2. the dark rod flat plate valve of a kind of no flange according to claim 1 and bolted bonnet (BB) structure, which is characterized in that
The self-energized seal device (4) is lip shape, and section configuration is inverted U-shaped, by sealed outer ring (41) and sealing inner ring
(42) stack combinations form, and sealed outer ring (41) is nonmetallic materials, for any one in rubber or PTFE, seal inner ring
(42) it is U-shaped sheet metal spring, the interior outer lip of self-energized seal device is made to be adjacent to valve rod and outer hole wall always.
3. the dark rod flat plate valve of a kind of no flange according to claim 1 and bolted bonnet (BB) structure, which is characterized in that
The valve component (10) includes valve cup ring (101), the first valve seat O-ring (102), the second valve seat O-ring (103), sealing ring
(104) and elastomer (105), wherein the first valve seat O-ring (102), the second valve seat O-ring (103) are arranged in valve cup ring
(101) on lateral surface, valve cup ring (101) is equipped with sealing ring (104) close to flashboard (9) end, the flow channel close to valve body (1)
End and flow pass end are equipped with several elastomers (105), and described elastomer (105) one end is located at the valve on valve cup ring (101)
In seat slot (1001), the other end is contacted with valve body (1) internal chamber wall, and sealing ring (104) end face is made to be affixed to flashboard (9) always.
4. the dark rod flat plate valve of a kind of no flange according to claim 1 and bolted bonnet (BB) structure, which is characterized in that
Two sides are respectively equipped with guide plate (8) at flashboard (9) the up and down motion position, and two pieces of guide plate (8) bodies are separately mounted to
On the flow channel and flow channel flange positioning spigot of lower valve body (111) inner cavity upstream and downstream, and flashboard (9) two sides and guiding
The fit clearance of plate (8) is can be controlled within 0.5mm.
5. the dark rod flat plate valve of a kind of no flange according to claim 1 and bolted bonnet (BB) structure, which is characterized in that
The screw rod instruction device (12) includes indicator (121) and instruction needle sleeve (122), and valve rod (11) upper section is additionally provided with finger
Show screw thread (1101), the instruction needle sleeve (122) is sleeved on valve rod (11) upper section, and instruction needle sleeve (122) side, which is equipped with, to be referred to
Show slot (1221), the instruction slot (1221) is parallel with valve rod (11), and described indicator (121) one end is located at instruction slot (1221)
Interior, indicator (121) other end is equipped with inner screw sheath and is spun in instruction screw thread (1101), and the instruction needle sleeve (122) passes through
Fastener is fixed on positioning disk (3)；The working thread (1102) is trapezoidal thread, and the instruction screw thread (1101) is closely-pitched
Screw thread, the screw pitch of instruction screw thread (1101) are less than the screw pitch of working thread (1102)；And the indicator sleeve on positioning disk (3)
Lower bearing (6) are packed into positioning convex platform (302) hole, and are fixed with bearing gland, rotation drive device (13) driving stem is passed through
(11), flashboard (9) mobile truncation channel is realized.
6. the dark rod flat plate valve of a kind of no flange according to claim 3 and bolted bonnet (BB) structure, it is characterised in that:
Reinforcing rib (105) equipped with the design of several horizontal distributions in the lower valve body (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232363.0A CN109826970B (en) | 2019-03-26 | 2019-03-26 | Hidden rod flat valve without flange and bolt connection valve cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232363.0A CN109826970B (en) | 2019-03-26 | 2019-03-26 | Hidden rod flat valve without flange and bolt connection valve cover structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109826970A true CN109826970A (en) | 2019-05-31 |
| CN109826970B CN109826970B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910232363.0A Active CN109826970B (en) | 2019-03-26 | 2019-03-26 | Hidden rod flat valve without flange and bolt connection valve cover structure |
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| Country | Link |
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| CN (1) | CN109826970B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498760A (en) * | 2023-06-26 | 2023-07-28 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
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| CN210600231U (en) * | 2019-03-26 | 2020-05-22 | 良工阀门集团有限公司 | Non-rising stem flat valve without flange and bolted connection valve cover structure |
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| CN101737514A (en) * | 2008-11-07 | 2010-06-16 | 浙江西麦克阀门制造有限公司 | Wedge type abrasion resistant plug valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498760A (en) * | 2023-06-26 | 2023-07-28 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
| CN116498760B (en) * | 2023-06-26 | 2023-08-22 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109826970B (en) | 2023-11-10 |
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Address after: 325000 Zhejiang province Wenzhou Longwan District Yongxing Street Hong Kong Road 32 Patentee after: Lianggu Valve Group Co.,Ltd. Address before: 325000 Zhejiang province Wenzhou Longwan District Yongxing Street Hong Kong Road 32 Patentee before: LIANGGONG VALVE GROUP CO.,LTD. |