CN106812961B - A kind of application method with scraper shut-off valve - Google Patents
A kind of application method with scraper shut-off valve Download PDFInfo
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- CN106812961B CN106812961B CN201710225807.9A CN201710225807A CN106812961B CN 106812961 B CN106812961 B CN 106812961B CN 201710225807 A CN201710225807 A CN 201710225807A CN 106812961 B CN106812961 B CN 106812961B
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- seat
- valve stem
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 92
- 230000000712 assembly Effects 0.000 claims abstract description 46
- 238000000429 assembly Methods 0.000 claims abstract description 46
- 238000007790 scraping Methods 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims description 11
- 210000004907 gland Anatomy 0.000 claims description 10
- 241001235022 Aplysia punctata Species 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The present invention relates to a kind of band scraper shut-off valve application methods, its step is: from open state to closed state: promoting positioning pin until positioning pin both ends are respectively clamped into concave mouth, rotate clockwise small handwheel, drive inner valve stem and doctor assemblies rotation, it is moved outside cutter head, upper scraping blade moves at valve clack sealing surface；Big handwheel is rotated outside inverse time, the components such as flap, doctor assemblies and chock plug are driven to move down, until lower scraping blade contacts sealing surface of seat, continue to rotate clockwise the circle of small handwheel one, another mistake hour hands rotate small handwheel, until brace head contacts link stopper, and continue rotation small handwheel counterclockwise, it is moved in band dynamic cutter head, upper and lower scraping blade is moved away from valve clack sealing surface and sealing surface of seat respectively, and stop rotating small handwheel；Positioning pin is moved away from concave mouth and moves down, and positioning pin both ends are caught in card slot；Continue to rotate big handwheel counterclockwise, until valve clack sealing surface compresses sealing surface of seat, valve is closed, this valve application method is simple, holding sealing surface is frayed less, enhancing life of valve.
Description
Technical field
The present invention relates to a kind of shut-off valves, more particularly, to a kind of application method with scraper shut-off valve.
Background technique
Shut-off valve is as a kind of extremely important truncation class valve, and sealing is by applying torque to valve rod, and valve rod exists
On axial direction to flap apply pressure, fit closely valve clack sealing surface with sealing surface of seat, prevention medium along sealing surface it
Between slot leakage, the sealing pair of shut-off valve is made of valve clack sealing surface and sealing surface of seat, and valve rod drives flap along valve seat
Center line is vertically moved, its shortcoming is that: when traditional shut-off valve uses the ore pulp having viscosity and containing solid particle
When equal media, medium is easily sticked on sealing pair, causes valve clack sealing surface that can not closely be combined with sealing surface of seat, to produce
Raw leakage, while the solid particle contained in medium is clipped on sealing pair, is easily destroyed sealing pair, service life is short.
Summary of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of use and is containing solid particle, and has viscosity
The operating conditions such as medium when, medium is not easy to be sticked on sealing pair, good airproof performance, the service life long dress with scraper shut-off valve and the valve
Method of completing the square and application method.
The present invention realizes by following technical solution:
A kind of band scraper shut-off valve includes: valve body, valve seat, outer valve rod, flap and valve deck, and valve inner is equipped with inlet flow
Road, outlet flow and lumen, outlet flow are communicated with lumen, and valve seat setting is equipped with valve in inlet channel outlet end, valve seat upper end
Seat sealing surface, valve seat are equipped with inner cavity, and valve deck is fixedly mounted on upper end in the middle part of valve body, stuffing-box is equipped in the middle part of valve deck, in the filler
Filler and gland being installed, gland compresses downwards filler at letter, it is characterised in that: valve deck top is equipped with headkerchief,
It is equipped with groove in the headkerchief, is equipped with valve stem nut and limit sleeve in the groove, limit sleeve, which is threadably secured, is mounted on groove
Upper end, and limit valve stem nut and move up and down, trapezoidal thread is equipped with inside valve stem nut, valve stem nut top is equipped with big hand
Wheel, outer valve rod lower end penetrate stuffing-box and protrude into lumen, be equipped with flap in lumen and flap seat, flap are fixedly mounted by flap seat
In outer valve rod lower end, flap lower end surface is equipped with the valve clack sealing surface that sealing can be formed with sealing surface of seat, in the flap lower end surface
Place is equipped with centered on flap axis, and at the link stopper of aplysia punctata, outer valve rod upper end is penetrated inside valve stem nut, stretches to top, outside
Valve rod top outer circle is equipped with the screw thread matched with the trapezoidal thread inside valve stem nut, and outer stem internal is equipped with inner valve stem, interior
Valve rod lower end penetrates outer valve rod lower end surface, lower section is stretched in flap lower end surface, and inner valve stem lower end is fixed with doctor assemblies and chock plug,
Doctor assemblies are mounted between valve clack sealing surface and chock plug, and chock plug is nonmetallic materials composition, and chock plug outer circle can be with valve base cavity
Sealing is formed between wall；Inner valve stem upper end penetrates outer valve rod upper surface, and inner valve stem top is equipped with the anti-of the transverse direction for penetrating inner valve stem
Turn trough, the anti-rotation groove is interior to be equipped with positioning pin and compressed spring, and positioning pin stretches out internal valve at lateral setting, the both ends of positioning pin respectively
Bar outer circle, compressed spring are arranged between positioning pin and anti-rotation groove upper surface, and it is symmetrical to be equipped with multiple groups in outer valve rod upper end
Card slot, valve rod axis is circumferentially distributed at center other than the card slot, and positioning pin is under the thrust of compressed spring, the two of positioning pin
End can enter the card slot, and two sides edge upper end of anti-rotation groove is respectively equipped with a concave mouth, and two concave mouths are with internal valve
It is symmetrically distributed centered on rod axis, positioning pin is moved up and rotated a certain angle, and two concave mouths can be caught in, in inner valve stem
End is fixed with small handwheel；It is equipped with guide groove in valve body middle chamber wall portion, outer stem lower portion is fixed with lateral guiding axis, this is led
It is protruded into guide groove to one end of axis.
Further, the doctor assemblies include cutter head and knife tail, and knife tail is fixed in inner valve stem, and cutter head front is equipped with
Upper and lower scraping blade, upper scraping blade can carry out plane contact with valve clack sealing surface, and lower scraping blade can carry out plane contact with sealing surface of seat,
It is attached between cutter head rear portion and knife tail with pin shaft, cutter head rear portion is also fixed with brace, the folder between the brace and cutter head
Angle is between 120 ° -150 °, and brace head is arc-shaped structure, and cutter head and knife tail junction are additionally provided with retaining plate, the retaining plate
It is mounted on the back side of brace.
Further, the blade is made of cemented carbide material.
A kind of band scraper shut-off valve assembly method of the present invention, its step are as follows:
A. each components are cleaned with clear water, and is dried up with hair dryer；
B. the assembling of valve body and valve seat: valve body heating is caused 200~250 DEG C, the inlet flow that valve seat is packed into valve body is said
Mouthful end keeps valve base sealing face-up, then the component of natural cooling valve body and valve seat in air；
C. the assembling of the parts such as outer valve rod and flap: the flap back side is protruded into outer valve rod lower end, and flap seat is packed into the flap back side,
And fixed outer valve rod, link stopper at the flap lower end surface that is fixedly mounted on of aplysia punctata centered on flap axis, guiding axis at
Lateral is fixed on outer stem lower portion；
D. doctor assemblies and chock plug the assembling of the parts such as inner valve stem, doctor assemblies and chock plug: are fixedly mounted on inner valve stem
Lower end, chock plug is mounted in the lower section of doctor assemblies, and abuts doctor assemblies；
E. the component that serial number c is completed is assembled with the serial number d component completed: inner valve stem upper end successively penetrates valve
Valve, outer valve rod inner hole stretch to top, make doctor assemblies against valve clack sealing surface, rotate inner valve stem, drive doctor assemblies rotation, make
The cutter head of doctor assemblies is moved away from valve clack sealing surface, successively installs positioning pin and compressed spring at the anti-rotation groove of inner valve stem upper end, fixed
Position pin is at lateral setting, and inner valve stem outer circle is stretched out at the both ends of positioning pin respectively, and compressed spring setting is on positioning pin and anti-rotation groove
Between end face, for positioning pin under the thrust of compressed spring, the both ends of positioning pin enter the card slot of outer valve rod upper end；
F. the assembling and overall package of bonnet assemblies: the lower that serial number e is completed is packed into the lumen position of valve body, protects
It holds valve clack sealing surface to combine with sealing surface of seat, guiding axis is kept to protrude into guide groove, at the stuffing-box in the middle part of valve deck, according to
It is secondary to be put into filler and gland, the bonnet assemblies that slow promotion group installs to the surface of inner valve stem and outer valve rod, then
Remove the positioning pin at the anti-rotation groove of inner valve stem upper end, then slowly put down bonnet assemblies, make inner valve stem upper end and outer valve rod
Upper end successively penetrate valve deck stuffing-box, filler, gland and headkerchief, until valve deck lower end combines with valve body upper end, and
With fixed valve body and valve deck；
G. the trapezoidal thread and outer valve in valve stem nut the assembling of the parts such as valve stem nut, limit sleeve and big handwheel: are utilized
The externally threaded cooperation on bar top, slow rotary valve rod nut move down, until valve stem nut lower end enters the groove in headkerchief
Then bottom is threadably secured limit sleeve and is mounted on groove upper end, big handwheel is fixedly mounted on valve stem nut top；
H. the assembling of the parts such as small handwheel: positioning pin is reloaded at anti-rotation groove, small handwheel is fixedly mounted on internal valve
Bar top；
I. hydraulic pressure strength test, pressurized seal test successively pressure testing: are carried out；
J. a kind of band scraper shut-off valve of pass the test is dried up, then japanning, lead sealing, storage.
Further, in the step d doctor assemblies assembly method: knife tail is fixed on inner valve stem lower end, scrapes above and below
Piece is fixedly mounted on cutter head front, is attached between cutter head rear portion and knife tail with pin shaft, and brace is fixedly mounted on cutter head rear portion,
Keep the angle between brace and cutter head between 120 ° -150 °, retaining plate is mounted on cutter head and knife tail junction, keeps retaining
The back side that plate is mounted on brace.
A kind of band scraper shut-off valve application method of the present invention, its step are as follows:
1. from off state to open state: rotating clockwise big handwheel, drive valve stem nut rotation, then drive outer valve
The components such as bar, inner valve stem, flap, doctor assemblies and chock plug move up, valve opening；
2. from open state to closed state: being lifted up positioning pin to concave mouth position, rotational positioning pin is until positioning
Pin both ends are respectively clamped into concave mouth, rotate clockwise small handwheel, drive inner valve stem and doctor assemblies rotation, move outside cutter head, above scrape
Piece moves at valve clack sealing surface, and lower scraping blade moves to right above sealing surface of seat；Big handwheel is rotated counterclockwise, drives valve stem nut rotation
Turn, then the components such as outer valve rod, inner valve stem, flap, doctor assemblies and chock plug is driven to move down, until lower scraping blade contacts valve base sealing
Face, stop rotating outer valve rod；Continue to rotate clockwise the circle of small handwheel one, another mistake hour hands rotate small handwheel, until brace head connects
Link stopper is touched, and continues rotation small handwheel counterclockwise, is moved in band dynamic cutter head, upper and lower scraping blade is moved away from valve clack sealing surface and valve seat respectively
Sealing surface, stop rotating small handwheel；Opposite direction rotational positioning pin, positioning pin are moved away from concave mouth, work of the positioning pin in compressed spring
It is moved down under, and positioning pin both ends is made to be caught in card slot again；Continuation rotates big handwheel counterclockwise, drives outer valve rod, internal valve
The components such as bar, flap, doctor assemblies and chock plug move down, until valve clack sealing surface compresses sealing surface of seat, valve is closed.
The present invention has the advantages that the design of doctor assemblies, it can effectively strike off that be adhered to valve clack sealing surface close with valve seat
Medium on cover, when valve is closed, it is not easy to destroy sealing pair, while valve clack sealing surface and sealing surface of seat are tighter
Close combination has the advantages that good airproof performance, long service life；The setting of chock plug, makes doctor assemblies on striking off sealing pair
When medium, medium is prevented to be adhered on sealing pair again, having further prevents valve clack sealing surface and sealing surface of seat viscous
The advantages of attached medium；The setting of inner valve stem and outer valve rod has the rotation for preferably freely controlling scraper, scrapes scraper preferably
Except the medium being adhered on sealing pair；The setting of positioning pin and compressed spring, better free switching inner valve stem and outer valve rod
Movement, have prevent due to inner valve stem with do not switch well when outer stem movement, lead to stuck advantage；Doctor assemblies packet
Include cutter head and knife tail, be attached between cutter head rear portion and knife tail with pin shaft, cutter head rear portion is also fixed with guide rod, the guide rod with
Angle between cutter head is to drive doctor assemblies rotation between 120 ° -150 ° in control inner valve stem, struck off and be adhered to sealing pair
On medium when, band dynamic cutter head remove sealing pair, have prevent cutter head to be stuck between valve clack sealing surface and sealing surface of seat, prevent
The advantages of sealing pair can not seal；This assembly method has the advantages that easy for installation, accurate, qualification rate is high；This valve application method
Simply, conveniently, keep sealing surface it is frayed less, enhancing life of valve.
Detailed description of the invention
Fig. 1 is a kind of open state structural schematic diagram with scraper shut-off valve of the present invention.
Fig. 2 is a kind of closed state structural schematic diagram with scraper shut-off valve of the present invention.
Fig. 3 is a kind of enlarged diagram of the doctor assemblies with scraper shut-off valve and valve clack sealing surface bottom view of the present invention.
Specific embodiment:
According to Fig. 1, Fig. 2 and Fig. 3 it is found that a kind of band scraper shut-off valve of the present invention include: valve body 1, valve seat 2, outer valve rod 7,
Flap 5 and valve deck 9 are equipped with inlet channel, outlet flow and lumen inside valve body 1, and outlet flow is communicated with lumen, and valve seat 2 is set
It sets in inlet channel outlet end, 2 upper end of valve seat is equipped with sealing surface of seat, and valve seat 2 is equipped with inner cavity, and valve deck 9 is fixedly mounted on valve body 1
Middle part upper end is equipped with stuffing-box in the middle part of valve deck 9, filler 10 and gland 11, gland 11 is equipped at the stuffing-box
Filler 10 is compressed downwards, and 9 top of valve deck is equipped with headkerchief 12, and groove is equipped in the headkerchief 12, is equipped with valve rod spiral shell in the groove
Mother 15 and limit sleeve 13, limit sleeve 13, which is threadably secured, is mounted on groove upper end, and limits valve stem nut 15 and move up and down,
Trapezoidal thread is equipped with inside valve stem nut 15,15 top of valve stem nut is equipped with big handwheel 14, and outer 7 lower end of valve rod penetrates stuffing-box
Lumen is protruded into, flap 5 and flap seat 6 are equipped in lumen, flap 5 is fixedly mounted by flap seat 6 in outer 7 lower end of valve rod, flap 5
Lower end surface is equipped with the valve clack sealing surface that sealing can be formed with sealing surface of seat, is equipped at 5 lower end surface of flap with flap axis
Centered on, at the link stopper 23 of aplysia punctata, outer 7 upper end of valve rod is penetrated inside valve stem nut 15, top is stretched to, outside outer 7 top of valve rod
Circle is equipped with the screw thread that matches with trapezoidal thread valve stem nut 15 inside, equipped with inner valve stem 8 inside outer valve rod 7, under inner valve stem 8
End penetrates outer 7 lower end surface of valve rod, lower section is stretched in 5 lower end surface of flap, and 8 lower end of inner valve stem is fixed with doctor assemblies 4 and chock plug 3,
Doctor assemblies 4 are mounted between valve clack sealing surface and chock plug 3, and chock plug 3 is nonmetallic materials composition, and 3 outer circle of chock plug can be with valve seat
Sealing is formed between internal chamber wall；8 upper end of inner valve stem penetrates outer 7 upper surface of valve rod, and 8 top of inner valve stem is equipped with the cross for penetrating inner valve stem
To anti-rotation groove, be equipped with positioning pin 17 and compressed spring 18 in the anti-rotation groove, positioning pin 17 is at lateral setting, the two of positioning pin 17
8 outer circle of inner valve stem is stretched out at end respectively, and compressed spring 18 is arranged between positioning pin 17 and anti-rotation groove upper surface, on outer valve rod 7
End is equipped with the symmetrical card slot of multiple groups, is circumferentially distributed centered on 7 axis of valve rod other than the card slot, positioning pin 17 is compressing
Under the thrust of spring 18, the both ends of positioning pin 17 can enter the card slot, and two sides edge upper end of anti-rotation groove is respectively equipped with one
A concave mouth, two concave mouths are symmetrically distributed with 8 axis of inner valve stem at center, and positioning pin 17 moves up and rotates certain angle
Degree, can be caught in two concave mouths, 8 upper end of inner valve stem is fixed with small handwheel 19；It is equipped with guide groove in 1 lumen wall portion of valve body,
Outer 7 lower part of valve rod is fixed with lateral guiding axis, and one end of the guiding axis is protruded into guide groove；The doctor assemblies 4 include
Cutter head 21 and knife tail 20, knife tail 20 are fixed in inner valve stem 8, and 21 front of cutter head is equipped with upper and lower scraping blade, and upper scraping blade can be close with flap
Cover carries out plane contact, and lower scraping blade can carry out plane contact with sealing surface of seat, use pin shaft between 21 rear portion of cutter head and knife tail
It being attached, cutter head rear portion is also fixed with brace 22, and the angle between the brace 22 and cutter head 21 is between 120 ° -150 °,
22 head of brace is arc-shaped structure, and cutter head 21 and 20 junction of knife tail are additionally provided with retaining plate, which is mounted on brace 22
The back side.
A kind of band scraper shut-off valve assembly method of the present invention, its step are as follows:
A. each components are cleaned with clear water, and is dried up with hair dryer；
B. the assembling of valve body 1 and valve seat 2: the heating of valve body 1 is caused 200~250 DEG C, valve seat 2 is packed into the inlet flow of valve body 1
Road outlet end keeps valve base sealing face-up, then the component of natural cooling valve body 1 and valve seat 2 in air；
C. the assembly of the parts such as outer valve rod 7 and flap 5: 5 back side of flap is protruded into outer 7 lower end of valve rod, and flap seat 6 is packed into flap
Link stopper 23, is fixedly mounted on 5 lower end of flap at aplysia punctata centered on 5 axis of flap by 5 back sides, and fixed outer valve rod 7
Face, guiding axis are fixed on outer 7 lower part of valve rod at lateral；
D. the assembling of the parts such as inner valve stem 8, doctor assemblies 4 and chock plug 3: by doctor assemblies 4 and chock plug 3 by being fixedly mounted on
8 lower end of inner valve stem, chock plug 3 is mounted in the lower section of doctor assemblies 4, and abuts doctor assemblies 4；
E. the component that serial number c is completed is assembled with the serial number d component completed: 8 upper end of inner valve stem successively penetrates valve
Valve 5,7 inner hole of outer valve rod stretch to top, make doctor assemblies 4 against valve clack sealing surface, rotate inner valve stem 8, doctor assemblies 4 is driven to revolve
Turn, so that the cutter head 21 of doctor assemblies 4 is moved away from valve clack sealing surface, 17 He of positioning pin is successively installed at 8 upper end anti-rotation groove of inner valve stem
Compressed spring 18, for positioning pin 17 at lateral setting, 8 outer circle of inner valve stem is stretched out at the both ends of positioning pin 17 respectively, and compressed spring 18 is set
Set between positioning pin 17 and anti-rotation groove upper surface, positioning pin 17 under the thrust of compressed spring 18, the both ends of positioning pin 17 into
Enter the card slot of outer 7 upper end of valve rod；
F. the assembling and overall package of bonnet assemblies: the lower that serial number e is completed is packed into the lumen position of valve body 1,
It keeps valve clack sealing surface to combine with sealing surface of seat, guiding axis is kept to protrude into guide groove, the stuffing-box at 9 middle part of valve deck
Place, is sequentially placed into filler 10 and gland 11, the bonnet assemblies that slow promotion group installs to inner valve stem 8 and outer valve rod 7
Then surface removes the positioning pin 17 at 8 upper end anti-rotation groove of inner valve stem, then slowly puts down bonnet assemblies, make inner valve stem 8
Upper end and the upper end of outer valve rod 7 successively penetrate valve deck stuffing-box, filler 10, gland 11 and headkerchief 12, until under valve deck 9
End is combined with 1 upper end of valve body, and fixed valve body 1 and valve deck 9；
G. the assembling of the parts such as valve stem nut 15, limit sleeve 13 and big handwheel 14: the trapezoidal spiral shell in valve stem nut 15 is utilized
The externally threaded cooperation of line and outer 7 top of valve rod, slow rotary valve rod nut 15 move down, until 15 lower end of valve stem nut enters
Then bottom portion of groove in headkerchief is threadably secured limit sleeve 13 and is mounted on groove upper end, big handwheel 14 is fixedly mounted
On 15 top of valve stem nut；
H. the assembling of the parts such as small handwheel 19: positioning pin 17 is reloaded at anti-rotation groove, small handwheel 19 is fixedly mounted
On inner valve stem top；
I. hydraulic pressure strength test, pressurized seal test successively pressure testing: are carried out；
J. a kind of band scraper shut-off valve of pass the test is dried up, then japanning, lead sealing, storage.
Further, in the step d doctor assemblies 4 assemble method: knife tail 20 is fixed on 8 lower end of inner valve stem, it is upper,
Lower scraping blade is fixedly mounted on 21 front of cutter head, is attached between 21 rear portion of cutter head and knife tail 20 with pin shaft, the fixed peace of brace 22
Mounted in 21 rear portion of cutter head, keep the angle between brace 22 and cutter head 22 between 120 ° -150 °, retaining plate is mounted on cutter head 21
With 20 junction of knife tail, retaining plate is kept to be mounted on the back side of brace 22.
A kind of band scraper shut-off valve application method of the present invention, its step are as follows:
1. from off state to open state: rotating clockwise big handwheel 14, valve stem nut 15 is driven to rotate, then drive outer
The components such as valve rod 7, inner valve stem 8, flap 5, doctor assemblies 4 and chock plug 3 move up, valve opening；
2. from open state to closed state: be lifted up positioning pin 17 to concave mouth position, rotational positioning pin 17 until
Positioning pin both ends are respectively clamped into concave mouth, rotate clockwise small handwheel 19, drive inner valve stem 8 and doctor assemblies 4 to rotate, cutter head 21
Outer shifting, upper scraping blade move at valve clack sealing surface, and lower scraping blade moves to right above sealing surface of seat；Big handwheel 19, band are rotated counterclockwise
Ovable valve stem nut 15 rotates, then the components such as outer valve rod 7, inner valve stem 8, flap 5, doctor assemblies 4 and chock plug 3 is driven to move down, directly
Sealing surface of seat is contacted to lower scraping blade, stop rotating outer valve rod 7；Continue to rotate clockwise the circle of small handwheel 19 1, the rotation of another mistake hour hands
Turn small handwheel 19, until 22 head of brace contacts link stopper, and continues rotation small handwheel 19 counterclockwise, is moved in band dynamic cutter head 21, upper,
Lower scraping blade is moved away from valve clack sealing surface and sealing surface of seat respectively, and stop rotating small handwheel 19；Opposite direction rotational positioning pin 17, positioning
Pin 17 is moved away from concave mouth, and positioning pin 17 moves down under the action of compressed spring 18, and is caught in 17 both ends of positioning pin again
Card slot；Continuation rotates big handwheel 14 counterclockwise, drives outer valve rod 7, inner valve stem 8, flap 5, doctor assemblies 4 and chock plug 3 etc. zero
Part moves down, until valve clack sealing surface compresses sealing surface of seat, valve is closed.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of application method with scraper shut-off valve, which includes: valve body, valve seat, outer valve rod, flap
And valve deck, valve inner are equipped with inlet channel, outlet flow and lumen, outlet flow is communicated with lumen, and valve seat is arranged in import
Runner exit end, valve seat upper end are equipped with sealing surface of seat, and valve seat is equipped with inner cavity, and valve deck is fixedly mounted on upper end in the middle part of valve body, valve
Lid middle part is equipped with stuffing-box, is equipped with filler and gland at the stuffing-box, and gland compresses downwards filler, on valve deck
Portion is equipped with headkerchief, and groove is equipped in the headkerchief, is equipped with valve stem nut and limit sleeve in the groove, limit sleeve is solid by screw thread
Dingan County is mounted in groove upper end, and limits valve stem nut and moves up and down, and is equipped with trapezoidal thread inside valve stem nut, on valve stem nut
Portion is equipped with big handwheel, and outer valve rod lower end penetrates stuffing-box and protrudes into lumen, is equipped with flap in lumen and flap seat, flap pass through valve
Valve seat is fixedly mounted in outer valve rod lower end, and flap lower end surface is equipped with the valve clack sealing surface that sealing can be formed with sealing surface of seat,
It is equipped with centered on flap axis at the flap lower end surface, at the link stopper of aplysia punctata, outer valve rod upper end is penetrated inside valve stem nut,
Top is stretched to, outer valve rod top outer circle is equipped with the screw thread matched with the trapezoidal thread inside valve stem nut, and outer stem internal is set
There is inner valve stem, inner valve stem lower end penetrates outer valve rod lower end surface, lower section is stretched in flap lower end surface, and inner valve stem lower end is fixed with scraper
Component and chock plug, doctor assemblies are mounted between valve clack sealing surface and chock plug, and chock plug is nonmetallic materials composition, and chock plug outer circle can
Sealing is formed between valve base cavity wall；Inner valve stem upper end penetrates outer valve rod upper surface, and inner valve stem top is equipped with and penetrates inner valve stem
Lateral anti-rotation groove, be equipped with positioning pin and compressed spring in the anti-rotation groove, positioning pin is at lateral setting, the both ends point of positioning pin
Not Shen Chu inner valve stem outer circle, compressed spring be arranged between positioning pin and anti-rotation groove upper surface, outer valve rod upper end be equipped with it is more
The symmetrical card slot of group, valve rod axis is circumferentially distributed at center other than the card slot, positioning pin under the thrust of compressed spring,
The both ends of positioning pin can enter the card slot, and two sides edge upper end of anti-rotation groove is respectively equipped with a concave mouth, this two recessed
Be symmetrically distributed centered on valve rod axis within seam allowance, positioning pin is moved up and is rotated a certain angle, can be caught in this two it is recessed only
Mouthful, inner valve stem upper end is fixed with small handwheel；It is equipped with guide groove in valve body middle chamber wall portion, outer stem lower portion is fixed with lateral
One end of guiding axis, the guiding axis is protruded into guide groove, and the doctor assemblies include cutter head and knife tail, and knife tail is fixed on inner valve stem
On, cutter head front is equipped with upper and lower scraping blade, and upper scraping blade can carry out plane contact with valve clack sealing surface, and lower scraping blade can be with valve base sealing
Face carries out plane contact, is attached between cutter head rear portion and knife tail with pin shaft, cutter head rear portion is also fixed with brace, the brace
Angle between cutter head is between 120 ° -150 °, and brace head is arc-shaped structure, and cutter head and knife tail junction are additionally provided with only
Plate is moved back, which is mounted on the back side of brace,
Its application method is as follows:
1) is from off state to open state: rotate clockwise big handwheel, drive valve stem nut rotation, then drive outer valve rod,
Inner valve stem, flap, knife tail, cutter head, brace, link stopper, chock plug, flap seat, positioning pin, compressed spring and small handwheel move up, valve
It opens；
2) is from open state to closed state: being lifted up positioning pin to concave mouth position, rotational positioning pin is until positioning pin
Both ends are respectively clamped into concave mouth, rotate clockwise small handwheel, drive inner valve stem and doctor assemblies rotation, move outside cutter head, upper scraping blade
It moves at valve clack sealing surface, lower scraping blade moves to right above sealing surface of seat；Big handwheel is rotated counterclockwise, drives valve stem nut rotation
Turn, then drive outer valve rod, inner valve stem, flap, knife tail, cutter head, brace, link stopper, chock plug, flap seat, positioning pin, compressed spring and
Small handwheel moves down, until lower scraping blade contacts sealing surface of seat, stop rotating outer valve rod；Continue to rotate clockwise the circle of small handwheel one,
Another mistake hour hands rotate small handwheel, until brace head contacts link stopper, and continues rotation small handwheel counterclockwise, move in band dynamic cutter head,
Upper and lower scraping blade is moved away from valve clack sealing surface and sealing surface of seat respectively, and stop rotating small handwheel；Opposite direction rotational positioning pin, positioning
Pin is moved away from concave mouth, and positioning pin moves down under the action of compressed spring, and positioning pin both ends is made to be caught in card slot again；Continue
Big handwheel is rotated counterclockwise, drives outer valve rod, inner valve stem, flap, knife tail, cutter head, brace, link stopper, chock plug, flap seat, positioning
Pin, compressed spring and small handwheel move down, until valve clack sealing surface compresses sealing surface of seat, valve is closed.
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| CN201710225807.9A CN106812961B (en) | 2017-04-07 | 2017-04-07 | A kind of application method with scraper shut-off valve |
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| CN201710225807.9A CN106812961B (en) | 2017-04-07 | 2017-04-07 | A kind of application method with scraper shut-off valve |
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| CN106812961B true CN106812961B (en) | 2019-04-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110440010B (en) * | 2019-08-14 | 2020-12-08 | 浙江云达流体智控股份有限公司 | Stop valve |
| CN110822138B (en) * | 2019-11-15 | 2021-07-13 | 中国化学工程第六建设有限公司 | Water supply and drainage system and construction method |
| CN110925447B (en) * | 2019-12-12 | 2024-01-30 | 浙江理工大学 | Double-valve clack magnetic stop regulating valve |
| CN115247710B (en) * | 2022-09-22 | 2022-12-27 | 杭州菲榭尔科技有限公司 | Electric low-noise sleeve regulating valve |
| CN117628194B (en) * | 2024-01-23 | 2024-05-03 | 河北凯盛流体设备制造有限公司 | Mud valve with good sealing performance and capable of automatically cleaning |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080081588A (en) * | 2007-03-06 | 2008-09-10 | 주식회사 신성엔지니어링 | Knife gate valve |
| CN104100728A (en) * | 2014-08-07 | 2014-10-15 | 郑子叶 | Self-sealing gate valve |
| CN105065701A (en) * | 2015-08-05 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Hard sealing lifting type brake plug valve and control method thereof |
| CN204985799U (en) * | 2015-07-16 | 2016-01-20 | 浙江福瑞科流控机械有限公司 | Lifting type plug -valve |
-
2017
- 2017-04-07 CN CN201710225807.9A patent/CN106812961B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080081588A (en) * | 2007-03-06 | 2008-09-10 | 주식회사 신성엔지니어링 | Knife gate valve |
| CN104100728A (en) * | 2014-08-07 | 2014-10-15 | 郑子叶 | Self-sealing gate valve |
| CN204985799U (en) * | 2015-07-16 | 2016-01-20 | 浙江福瑞科流控机械有限公司 | Lifting type plug -valve |
| CN105065701A (en) * | 2015-08-05 | 2015-11-18 | 浙江福瑞科流控机械有限公司 | Hard sealing lifting type brake plug valve and control method thereof |
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Effective date of registration: 20231130 Address after: 325100 East Ou Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province Patentee after: ZHEJIANG KEZHENG VALVE Co.,Ltd. Address before: 325115 Lixi Village, Yantou Town, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: Li Xiangqing |
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