CN106224572A - Double spool double-sealing face regulation valve - Google Patents
Double spool double-sealing face regulation valve Download PDFInfo
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- CN106224572A CN106224572A CN201610834755.0A CN201610834755A CN106224572A CN 106224572 A CN106224572 A CN 106224572A CN 201610834755 A CN201610834755 A CN 201610834755A CN 106224572 A CN106224572 A CN 106224572A
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- valve
- spool
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- sealing
- auxiliary
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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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The present invention relates to double spool double-sealing face regulation valve, it is specifically related to a kind of regulation valve, the cavity surrounded including valve body and valve gap, there is on described valve body valve inlet and the valve outlet port connecting this cavity, spool and valve seat it is provided with in this cavity, described spool is combined with auxiliary valve core by main valve plug, described valve seat is provided with the primary sealing area and secondary sealing area coordinated respectively with main valve plug and auxiliary valve core, it it is adjustable fixing connection between described main valve plug and auxiliary valve core, can be made by the relative position between regulation main valve plug and auxiliary valve core: when main valve plug and first front cover laminating, auxiliary valve core separates with secondary sealing area；Or when auxiliary valve core and secondary sealing area laminating, main valve plug separates with primary sealing area.In the present invention, the use of double spool double-sealing face can also utilize secondary sealing pair to realize sealing in the case of primary seal pair lost efficacy, and effectively provides the service life of valve.
Description
Technical field
The present invention relates to double spool double-sealing face regulation valve, more specifically one to apply at High Pressure Difference gas, consolidate
In two phase flow medium, system is carried out pressure controlled valve.
Background technology
In dry coal powder pressure gasifying technique, need to regulate valve and the pressure of equipment is carried out intermittent regulation, due to pressure reduction relatively
Greatly, velocity of medium is higher；On the other hand, due to the gas-particle two-phase flow medium that medium is airborne coal dust, structure internal for regulation valve
The strong row of part wash away the service life that highly shortened regulation valve.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, it is provided that one is especially suitable for utilization in high pressure
Difference, gas-particle two-phase flow medium carry out pressure controlled double spool double-sealing face regulation valve, at the base ensureing valve regulated performance
On plinth, medium is carried out the noise reduction that reduces pressure, and extends regulation valve service life.
For achieving the above object, the invention provides techniques below scheme:
A kind of double spool double-sealing face regulation valve, the cavity surrounded including valve body and valve gap, described valve body has connection
The valve inlet of this cavity and valve outlet port, be provided with spool and valve seat in this cavity, what described spool was axially movable is arranged on described
In cavity, and and valve seat constitute opening and closing movement and thus carry out the break-make between control valve entrance and valve outlet port, described spool is by passing through
The valve rod wearing valve gap setting is connected with the spool driver element outside cavity, and described spool is by main valve plug and auxiliary valve core combination
Becoming, described valve seat is provided with the primary sealing area and secondary sealing area coordinated respectively, described main valve plug with main valve plug and auxiliary valve core
And be adjustable fixing connection between auxiliary valve core, can be made by the relative position between regulation main valve plug and auxiliary valve core: main valve
When core and first front cover laminating, auxiliary valve core separates with secondary sealing area；Or when auxiliary valve core and secondary sealing area laminating, main valve plug
Separate with primary sealing area.
Preferably, being additionally provided with a valve cage in the cavity that described valve body and valve gap surround, described valve cage covers on outside spool, institute
State and on valve cage, be evenly equipped with flowing hole, enter the inner chamber at spool place from the medium of the valve inlet flowing hole on valve cage.
Preferably, the restricting element of tubular, the tubular inner chamber of described restricting element and valve it are fixedly installed in described cavity
Outlet is connected, and restricting element is coaxially disposed with spool, and the barrel of described restricting element sets the most successively
It is equipped with the throttle orifice that aperture is descending；Described spool has the tubular valve core cavity that bottom is uncovered, described restricting element fit
In described valve core cavity, the cylindrical sidewall of spool in the axial moving process of spool is enable to be enclosed in the different holes of restricting element
On the throttle orifice in footpath.
Preferably, described main valve plug and auxiliary valve core are the tubular structure that lower end is uncovered, and described main valve plug is sleeved on secondary valve
Outside core, and the relative axial position between main valve plug and auxiliary valve core is adjustable, when main valve plug is positioned at bottom relative to auxiliary valve core,
By main valve plug and the first close sealing surface form sealing pair, when main valve plug is positioned at upper relative to auxiliary valve core, by auxiliary valve core
Sealing pair is formed with secondary sealing area；Described restricting element is linked in the into the barrel chamber of auxiliary valve core.
Preferably, the upper end of described auxiliary valve core is affixed with valve rod, and described main valve plug upper end is provided with the screw thread passed for valve rod
Hole, valve rod is provided with the external screw thread coordinated with this screwed hole；It is provided with between upper surface and the lower surface of valve gap of described main valve plug
Lockable mechanism, described lockable mechanism includes upwards protruding out on main valve plug upper surface arranging limited block, and sets on valve gap lower surface
The stopper slot matched with described limited block put, the circumference that can limit main valve plug with stopper slot when limited block engages turns
Dynamic.
Preferably, the lower end of described main valve plug is the conical surface, and the lower end of auxiliary valve core is plane, and described valve seat is provided with and secondary valve
The groove that the outline of core matches, at the notch of described groove, edge is provided with chamfering, and this fillet surface i.e. constitutes described first close
Front cover, the bottom land of described groove i.e. constitutes described secondary sealing area.
Preferably, described valve seat be sleeved on the outer ring surface of described restricting element and valve seat and restricting element outer ring surface it
Between be provided with sealing ring.
Preferably, it is provided with sealing ring between inner ring surface and the outer ring surface of auxiliary valve core of described main valve plug.
Preferably, the top of described valve rod is provided with one section of thread segment and one section of square shaft section being easy to spanner clamping, this screw thread
Section is constituted with the drive rod of valve rod driver element threadeds, and described square shaft section is easy to manually utilize spanner rotation valve rod and secondary valve
Core；Described drive rod side is provided with stroke direction board, and the trip direction board indicates major and minor sealing and regulates region, and this region is used for
Switching between major and minor sealing, major and minor sealing regulation regulates region for valve stroke beyond region.
Preferably, described limited block is divided into two symmetrical quarter turn parts, and described stopper slot is two symmetrical 3/8
Circumferential section so that limited block can be inserted in stopper slot with comparalive ease.
The method have technical effect that:
1, in the present invention, the use of double spool double-sealing face can also utilize secondary sealing in the case of primary seal pair lost efficacy
Pair realizes sealing, and effectively provides the service life of valve.
2, the valve cage in the present invention can carry out certain buffering to medium, it is to avoid medium directly impacts spool.
3, in the present invention, the sealing surface of spool and valve seat separates with the throttleng surface on restricting element so that valve core sealed cover is exempted from
Impacted by high velocity stream medium, can effectively be alleviated the damage of valve core sealed cover.
4, the present invention is during regulation, owing to sealing surface of seat is away from throttling band, can be effectively prevented due to valve seat
Sealing surface damages the valve seal caused and lost efficacy.
5, the present invention is to bear washing away of medium with restricting element, therefore significantly reduces for spool and sealing surface of seat
Damage, restricting element use WC Hardmetal materials be greatly improved service life, product maintenance only need to change restricting element
?.
6, due to the fact that valve is moved by spool to change the circulation area of throttle orifice in restricting element and realize convection current
The regulation of amount, by porose regulation during big flow, is regulated by two less rounds during low discharge, by minimum aperture during fine setting
Regulation, can reach high accuracy control.
Accompanying drawing explanation
Fig. 1 a and Fig. 1 b is respectively the secondary fully closed and full-gear schematic diagram of primary seal of the present invention；
Fig. 2 a and Fig. 2 b is respectively that pair sealing pair of the present invention is fully closed and full-gear schematic diagram；
Valve when spool molectron, secondary seal operation state when Fig. 3 a and Fig. 3 b is respectively primary seal duty in the present invention
Core assembly structural representation.
Fig. 4 a and Fig. 4 b is respectively main valve plug and auxiliary valve core structural representation in the present invention.
Fig. 5 a and Fig. 5 b is respectively main valve plug in the present invention, valve gap anti-rotation portion structure schematic diagram；
When in Fig. 6 a and Fig. 6 b respectively present invention, major and minor sealing is worked, during valve wide open, locking structure duty is shown
It is intended to；
Fig. 7 is the stroke signboard structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Fig. 1 a, 1b, 2a, 2b, a kind of regulation valve, the cavity surrounded including valve body 1 and valve gap 2, on described valve body 1
Having valve inlet 12 and the valve outlet port 13 connecting this cavity, be provided with spool 3 and valve seat 9 in this cavity, described spool 3 can axially move
Dynamic is arranged in described cavity, and and valve seat 9 constitute opening and closing movement and thus come between control valve entrance 12 and valve outlet port 13
Break-make, described spool 3 by run through valve gap 2 arrange valve rod 5 be connected with the spool driver element 6 outside cavity, as Fig. 3 a,
Shown in 3b, 4a, 4b, described spool 3 is combined with auxiliary valve core 3b by main valve plug 3a, described valve seat 9 be provided with respectively with main valve
The primary sealing area of core 3a and auxiliary valve core 3b cooperation and secondary sealing area, be adjustable between described main valve plug 3a and auxiliary valve core 3b
Fixing connection, can be made by the relative position between regulation main valve plug 3a and auxiliary valve core 3b: main valve plug 3a and first front cover
During laminating, auxiliary valve core 3b separates with secondary sealing area；Or auxiliary valve core 3b and secondary sealing area are when fitting, main valve plug 3a and first close
Front cover separates.The preferred pneumatic actuator of the present invention is as spool driver element 6, and those skilled in the art should know spool and drive
Moving cell 6 can also use Electromagnetic Drive or other drive form such as manually.In the present invention, the use of double spool double-sealing face exists
Primary seal pair can also utilize secondary sealing pair to realize sealing in the case of losing efficacy, effectively provides the service life of valve.
Further, being additionally provided with a valve cage 7 in the cavity that described valve body 1 and valve gap 2 surround, described valve cage 7 covers on spool 3
Outside, described valve cage 7 is evenly equipped with flowing hole, enters spool 3 place from the medium of valve inlet 12 flowing hole on valve cage 7
Inner chamber.Valve cage 7 in the present invention can carry out certain buffering to medium, it is to avoid medium directly impacts spool 3.
Further, the restricting element 8 of tubular, the tubular inner chamber of described restricting element 8 it are fixedly installed in described cavity
Be connected with valve outlet port 13, and restricting element 8 be coaxially disposed with spool 3, on the barrel of described restricting element 8 axially from upper and
Under be disposed with the descending throttle orifice in aperture 16；Described spool 3 has the tubular valve core cavity that bottom is uncovered, described joint
Fluid element 8 is linked in described valve core cavity, and during enabling spool 3 to move axially, the cylindrical sidewall of spool 3 is enclosed in joint
On the throttle orifice 16 of the different pore size of fluid element 8.Spool 3 and the sealing surface of valve seat 9 and the throttling on restricting element 8 in the present invention
Face is separately so that spool 3 sealing surface, from the impact of high velocity stream medium, can alleviate the damage of spool 3 sealing surface effectively.This
Bright during regulation, owing to valve seat 9 sealing surface is away from throttling band, can be effectively prevented and make owing to valve seat 9 sealing surface damages
The valve seal become lost efficacy.The present invention is to bear washing away of medium with restricting element 8, therefore significantly reduces for spool 3 He
The damage of valve seat 9 sealing surface, restricting element 8 uses WC Hardmetal materials to be greatly improved service life, and product maintenance only needs
Change restricting element 8.
Preferably, described main valve plug 3a and auxiliary valve core 3b is the tubular structure that lower end is uncovered, and described main valve plug 3a is set with
Outside auxiliary valve core 3b, and the relative axial position between main valve plug 3a and auxiliary valve core 3b is adjustable, when main valve plug 3a is relative to pair
When spool 3b is positioned at bottom, main valve plug 3a's and the first close sealing surface form sealing pair, when main valve plug 3a is relative to auxiliary valve core
When 3b is positioned at upper, auxiliary valve core 3b's and secondary sealing area form sealing pair；Described restricting element 8 is linked in auxiliary valve core 3b's
Into the barrel chamber.
Preferably, the upper end of described auxiliary valve core 3b is affixed with valve rod 5, and described main valve plug 3a upper end is provided with and passes for valve rod 5
Screwed hole 20, valve rod 5 is provided with the external screw thread 21 coordinated with this screwed hole 20；The upper surface of described main valve plug 3a and valve gap 2
Lower surface between be provided with lockable mechanism, described lockable mechanism includes upwards protruding out on main valve plug 3a upper surface arranging limited block
The stopper slot 22 matched with described limited block 19 arranged on 19, and valve gap 2 lower surface, when limited block 19 and stopper slot 22
Circumferentially rotating of main valve plug 3a can be limited during engaging.Preferably, described limited block 19 is divided into two symmetrical quarter turn portions
Point, described stopper slot 22 is two 3/8 symmetrical circumferential sections so that limited block 19 can be inserted into stopper slot with comparalive ease
In 22.Valve seal pair handoff procedure is: valve reaches fully open position, relies on the locking structure of spool 3 and valve gap 2 composition,
After being specially the stopper slot 22 that main valve plug 3a upper end limited block 19 is inserted into valve gap 2, utilize spanner revolute pair spool 3b upper valve rod 5
The square shaft section 16 of part rotates clockwise spool 3, makes spool 3 decline a certain distance, until turning motionless.Now by leading
Seal operation State Transferring is secondary seal operation state.
Preferably, the lower end of described main valve plug 3a is the conical surface, and the lower end of auxiliary valve core 3b is plane, and described valve seat 9 is provided with
The groove 14 matched with the outline of auxiliary valve core 3b, at the notch of described groove 14, edge is provided with chamfering, this fillet surface i.e. structure
Described primary sealing area, the bottom land of described groove 14 is become i.e. to constitute described secondary sealing area.
Preferably, described valve seat 9 is sleeved on the outer ring surface of described restricting element 8 and the outer shroud of valve seat 9 and restricting element 8
Sealing ring 15 it is provided with between face.It is provided with sealing ring 18 between inner ring surface and the outer ring surface of auxiliary valve core 3b of described main valve plug 3a.
Preferably, the top of described valve rod 5 is provided with one section of thread segment 17 and one section of square shaft section 16 being easy to spanner clamping, should
Thread segment 17 is constituted with the drive rod 10 of spool driver element 6 threadeds, and described square shaft section 16 is easy to manually utilize spanner to turn
Ovable valve stem 5 and auxiliary valve core 3b；Described drive rod 10 side is provided with stroke direction board 11, and the trip direction board mark 11 has major and minor close
Envelope regulation region, the switching between major and minor sealing of this region, major and minor sealing regulation regulates for valve stroke beyond region
Region.Due to the fact that valve is moved by spool 3 and change the circulation area realization of throttle orifice 16 in restricting element 8 to flow
Regulation, by porose regulation during big flow, regulated by two less rounds during low discharge, by minimum aperture tune during fine setting
Joint, can reach high accuracy control.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. a double spool double-sealing face regulation valve, the cavity surrounded including valve body (1) and valve gap (2), the upper tool of described valve body (1)
There is valve inlet (12) and the valve outlet port (13) connecting this cavity, in this cavity, be provided with spool (3) and valve seat (9), described spool (3)
Be axially movable is arranged in described cavity, and thus comes control valve entrance (12) and valve with valve seat (9) composition opening and closing movement
Break-make between outlet (13), the valve rod (5) that described spool (3) is arranged by running through valve gap (2) drives with the spool outside cavity
Moving cell (6) is connected, it is characterised in that: described spool (3) is combined with auxiliary valve core (3b) by main valve plug (3a), described valve seat
(9) primary sealing area and secondary sealing area coordinated respectively, described main valve plug it are provided with main valve plug (3a) and auxiliary valve core (3b)
(3a) and be adjustable fixing connection between auxiliary valve core (3b), relative by between regulation main valve plug (3a) and auxiliary valve core (3b)
Position can make: when main valve plug (3a) and first front cover laminating, auxiliary valve core (3b) separates with secondary sealing area；Or auxiliary valve core
(3b), when fitting with secondary sealing area, main valve plug (3a) separates with primary sealing area.
Double spool double-sealing face the most according to claim 1 regulation valve, it is characterised in that: described valve body (1) and valve gap (2)
Being additionally provided with a valve cage (7) in the cavity surrounded, it is outside that described valve cage (7) covers on spool (3), and described valve cage was evenly equipped with on (7)
Discharge orifice, enters the inner chamber at spool (3) place from the medium of valve inlet (12) flowing hole on valve cage (7).
Double spool double-sealing face the most according to claim 1 regulation valve, it is characterised in that: it is fixedly installed in described cavity
The restricting element (8) of tubular, the tubular inner chamber of described restricting element (8) is connected with valve outlet port (13), and restricting element (8) with
Spool (3) is coaxially disposed, and the barrel of described restricting element (8) is disposed with aperture the most from top to bottom descending
Throttle orifice (16)；Described spool (3) has the tubular valve core cavity that bottom is uncovered, and described restricting element (8) is linked in described valve
In in-core chamber, during enabling spool (3) to move axially, the cylindrical sidewall of spool (3) is enclosed in the difference of restricting element (8)
On the throttle orifice (16) in aperture.
Double spool double-sealing face the most according to claim 3 regulation valve, it is characterised in that: described main valve plug (3a) and secondary valve
Core (3b) is the tubular structure that lower end is uncovered, and it is outside that described main valve plug (3a) is sleeved on auxiliary valve core (3b), and main valve plug (3a)
And the relative axial position between auxiliary valve core (3b) is adjustable, when main valve plug (3a) is positioned at bottom relative to auxiliary valve core (3b), by
Main valve plug (3a) and first close sealing surface formed sealing pair, when main valve plug (3a) is positioned at upper relative to auxiliary valve core (3b),
By auxiliary valve core (3b) and secondary sealing area form sealing pair；Described restricting element (8) is linked in the into the barrel chamber of auxiliary valve core (3b).
Double spool double-sealing face the most according to claim 4 regulation valve, it is characterised in that: the upper end of described auxiliary valve core (3b)
Affixed with valve rod (5), described main valve plug (3a) upper end is provided with for valve rod (5) screwed hole (20) that passes, valve rod (5) be provided with
The external screw thread (21) that this screwed hole (20) coordinates；It is provided with between upper surface and the lower surface of valve gap (2) of described main valve plug (3a)
Lockable mechanism, described lockable mechanism includes upwards protruding out on main valve plug (3a) upper surface and arranges limited block (19), and valve gap (2)
The stopper slot (22) matched with described limited block (19) arranged on lower surface, when limited block (19) engages with stopper slot (22)
Time can limit circumferentially rotating of main valve plug (3a).
Double spool double-sealing face the most according to claim 4 regulation valve, it is characterised in that: the lower end of described main valve plug (3a)
For the conical surface, the lower end of auxiliary valve core (3b) is plane, and described valve seat (9) is provided with recessed with what the outline of auxiliary valve core (3b) matched
Groove (14), at the notch of described groove (14), edge is provided with chamfering, and this fillet surface i.e. constitutes described primary sealing area, described groove
(14) bottom land i.e. constitutes described secondary sealing area.
Double spool double-sealing face the most according to claim 3 regulation valve, it is characterised in that: described valve seat (9) is sleeved on institute
State on the outer ring surface of restricting element (8) and between the outer ring surface of valve seat (9) and restricting element (8), be provided with sealing ring (15).
Double spool double-sealing face the most according to claim 4 regulation valve, it is characterised in that: the internal ring of described main valve plug (3a)
Sealing ring (18) it is provided with between the outer ring surface of face and auxiliary valve core (3b).
Double spool double-sealing face the most according to claim 5 regulation valve, it is characterised in that: the top of described valve rod (5) sets
There is one section of thread segment (17) and one section of square shaft section (16) being easy to spanner clamping, this thread segment (17) and spool driver element (6)
Drive rod (10) constitute threaded, described square shaft section (16) is easy to manually utilize spanner rotation valve rod (5) and auxiliary valve core
(3b)；Described drive rod (10) side is provided with stroke direction board (11), and the trip direction board mark (11) has major and minor sealing regulatory region
Territory, the switching between major and minor sealing of this region, major and minor sealing regulation regulates region for valve stroke beyond region.
Double spool double-sealing face the most according to claim 5 regulation valve, it is characterised in that: described limited block (19) is divided into
Two symmetrical quarter turn parts, described stopper slot (22) is two 3/8 symmetrical circumferential sections so that limited block (19) energy
Enough it is inserted into comparalive ease in stopper slot (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834755.0A CN106224572B (en) | 2016-09-20 | 2016-09-20 | Double spool double-sealing face regulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834755.0A CN106224572B (en) | 2016-09-20 | 2016-09-20 | Double spool double-sealing face regulating valve |
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| Publication Number | Publication Date |
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| CN106224572A true CN106224572A (en) | 2016-12-14 |
| CN106224572B CN106224572B (en) | 2018-07-27 |
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| CN201610834755.0A Active CN106224572B (en) | 2016-09-20 | 2016-09-20 | Double spool double-sealing face regulating valve |
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| CN109000034A (en) * | 2018-09-13 | 2018-12-14 | 浙江永盛科技股份有限公司 | A kind of compound voltage reducing silencing sleeve regulating valve |
| CN109798368A (en) * | 2019-02-27 | 2019-05-24 | 苏州纽威阀门股份有限公司 | A kind of seperating range control valve |
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| CN111810649A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Noise-reducing impurity-removing pressure-reducing regulating valve |
| CN111895112A (en) * | 2020-07-14 | 2020-11-06 | 泉州装备制造研究所 | Parallel straight-sliding type double-valve-core straight-through type throttle valve |
| CN112610708A (en) * | 2020-12-09 | 2021-04-06 | 浙江大学 | Double-seat type regulating valve and sealing structure and method thereof |
| CN113958742A (en) * | 2021-09-29 | 2022-01-21 | 合肥通用机械研究院有限公司 | Two-stage tower type adjustable constant flow balance valve |
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| CN110594431A (en) * | 2019-09-29 | 2019-12-20 | 尹秀兰 | Special valve for liquid delivery |
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| CN111810649A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Noise-reducing impurity-removing pressure-reducing regulating valve |
| CN112610708A (en) * | 2020-12-09 | 2021-04-06 | 浙江大学 | Double-seat type regulating valve and sealing structure and method thereof |
| CN112610708B (en) * | 2020-12-09 | 2021-11-02 | 浙江大学 | Double-seat type regulating valve and sealing structure and method thereof |
| CN113958742A (en) * | 2021-09-29 | 2022-01-21 | 合肥通用机械研究院有限公司 | Two-stage tower type adjustable constant flow balance valve |
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