CN110094528A - A kind of open and close valve for gasification of coal lock slag lock - Google Patents
A kind of open and close valve for gasification of coal lock slag lock Download PDFInfo
- Publication number
- CN110094528A CN110094528A CN201910511388.4A CN201910511388A CN110094528A CN 110094528 A CN110094528 A CN 110094528A CN 201910511388 A CN201910511388 A CN 201910511388A CN 110094528 A CN110094528 A CN 110094528A
- Authority
- CN
- China
- Prior art keywords
- spool
- open
- close
- gasification
- lock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 239000002893 slag Substances 0.000 title claims abstract description 25
- 238000002309 gasification Methods 0.000 title claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A kind of open and close valve for gasification of coal lock slag lock, is related to coal processing equipment field, including spool and valve rod, and valve core housing is set on the outside of valve rod, and valve rod includes the engaging portion and the exposed exposed portion except spool in spool；Exposed portion is provided with the spherical end for constituting spherical hinge structure with transmission mechanism far from one end of spool；Engaging portion is provided with reducer, and the diameter of reducer is gradually reduced towards the direction close to exposed portion.When open and close valve is closed, transmission mechanism driving stem is moved up, and is run with movable valve plug towards the direction of valve seat.After spool is contacted with valve seat, moving up for spool is prevented from, and valve rod can but continue to move up a small distance.Spool is pressed further by between spool and valve seat with respect to valve rod slide downward, the thrust outside by reducer, achievees the effect that tight seal at this time.
Description
Technical field
The present invention relates to coal processing equipment fields, in particular to a kind of open and close valve for gasification of coal lock slag lock.
Background technique
Gasification furnace is the capital equipment to gasify to coal, and slag lock is then the dress being discharged positioned at gasification furnace lower section for lime-ash
It sets, and the open and close valve of slag lock, it is the key equipment for controlling slag lock opening and closing.Gasification furnace in the prior art in the process of running, coal
The open and close valve leakproofness of lock and slag lock is poor, leaks frequent occurrence, and maintenance is frequent.And the maintenance of equipment is more troublesome, every time
Valve rod must entirely be hung out together with spool when replacing spool, valve seat, it is extremely time-consuming and laborious.
Summary of the invention
The purpose of the present invention is to provide a kind of open and close valves for gasification of coal lock slag lock, and structure is simple and novel, uses
Convenient, sealing effect is excellent, can effectively reduce the leakage problem of open and close valve.
The embodiment of the present invention is achieved in that
A kind of open and close valve for gasification of coal lock slag lock, including spool and valve rod, valve core housing are set on the outside of valve rod, and valve rod includes position
In engaging portion and the exposed exposed portion except spool in spool；Exposed portion far from one end of spool be provided with for
The spherical end of transmission mechanism composition spherical hinge structure；Engaging portion is provided with reducer, and the diameter of reducer is towards close to exposed portion
Direction be gradually reduced.
Further, in the other preferred embodiments of the present invention, valve rod includes tapered sleeve, tapered sleeve be sheathed on the outside of engaging portion with
Reducer is formed, the diameter of tapered sleeve is gradually reduced towards the direction close to exposed portion.
Further, in the other preferred embodiments of the present invention, tapered sleeve is divided into two and half by the plane of its axis
Tapered sleeve, two and half tapered sleeves piece together tapered sleeve.
Further, in the other preferred embodiments of the present invention, engaging portion is provided with locking in one end far from exposed portion
Nut, locking nut connect valve rod with spool.
Further, in the other preferred embodiments of the present invention, open and close valve further includes protective cover, and protective cover is sheathed on exposed
On the outside of portion, protective cover is generally round table-like, and diameter is gradually increased towards the direction close to spool.
Further, in the other preferred embodiments of the present invention, spool has the upper surface towards exposed portion, protective cover tool
There are the upset of close spool, and the tiny end far from spool, the diameter of upset is slightly larger than the diameter of upper surface.
Further, in the other preferred embodiments of the present invention, protective cover is divided into two by the plane by its axis
Half protective cover, two and half protective covers piece together protective cover.
Further, in the other preferred embodiments of the present invention, exposed portion is provided with logical in the position close to spherical end
Hole, through-hole are arranged along the diametrical direction of spool；Two and half protective covers are provided with pin hole corresponding with through-hole, two and half protective covers
After split, it can be fixed by passing through the fixed pin of through-hole and two pin holes.
Further, in the other preferred embodiments of the present invention, open and close valve further includes valve seat, and valve seat includes support and sealing
Ring, the matching hole with spool cooperation is formed in the middle part of support, and sealing ring is set to the inner wall of matching hole.
Further, in the other preferred embodiments of the present invention, the section of sealing ring is L shape, and the inner wall of matching hole is set
It is equipped with the ladder-like boss with sealing ring cooperation.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the invention provides a kind of open and close valves for gasification of coal lock slag lock, including spool and valve rod, valve core housing to be set to
On the outside of valve rod, valve rod includes the engaging portion and the exposed exposed portion except spool in spool；Exposed portion is far from spool
One end be provided with for transmission mechanism constitute spherical hinge structure spherical end；Engaging portion is provided with reducer, reducer
Diameter is gradually reduced towards the direction close to exposed portion.When open and close valve is closed, transmission mechanism driving stem is moved up, and drives
Spool is run towards the direction of valve seat.After spool is contacted with valve seat, moving up for spool is prevented from, and valve rod can but continue to move up one
Segment distance.Spool further squeezes between spool and valve seat with respect to valve rod slide downward, the thrust outside by reducer at this time
Pressure, achievees the effect that tight seal.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of cross-sectional view for the open and close valve that slag lock is locked for gasification of coal provided by the embodiment of the present invention；
Fig. 2 is a kind of cross-sectional view in the face A-A for the open and close valve that slag lock is locked for gasification of coal provided by the embodiment of the present invention.
Icon: 100- open and close valve；110- spool；111- curved surface；The upper surface 112-；120- valve rod；The exposed portion 121-；122-
Engaging portion；123- spherical end；124- tapered sleeve；Half tapered sleeve of 1241-；125- locking nut；1251- annular convex platform；1252- outer six
Square structure；130- valve seat；131- support；132- sealing ring；140- protective cover；141- upset；The tiny end 142-；143- is fixed
Pin.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects；It can be directly connected, the connection or two members inside two elements can also be can be indirectly connected through an intermediary
The interaction relationship of part.For the ordinary skill in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Embodiment
Please refer to Fig. 1, present embodiments provide it is a kind of for gasification of coal lock slag lock open and close valve 100, including spool 110,
Valve rod 120 and valve seat 130.For the convenience of description, the noun of locality designed below is subject to the visual angle of Fig. 1, in open and close valve 100
Placement position variation when, corresponding change need to be carried out by describing the noun of locality used.
The middle part of valve seat 130 is provided with the matching hole (not indicating) to be cooperated with spool 110, spool 110 it is outer
Side is a curved surface 111, and the diameter of the curved surface 111 from top to bottom becomes larger, and the diameter at the minimum of the upper end is less than cooperation
The aperture in hole, the diameter of lower end maximum are greater than the aperture of matching hole.In this way, in the case where spool 110 moves down, cinder can be with
By the gap discharge between spool 110 and valve seat 130, in the case where spool 110 moves up, under spool 110 and matching hole
Edge contact, and the lower edge of matching hole is squeezed, close the channel of cinder discharge.
In the present embodiment, spool 110 is sheathed on 120 outside of valve rod, and valve rod 120 includes the combination in spool 110
Portion 122, i.e. lower half portion and the exposed exposed portion 121 except spool 110 in Fig. 1, i.e. top half in Fig. 1.It is naked
Dew portion 121 is provided with the spherical end for constituting spherical hinge structure with transmission mechanism (not shown) far from one end of spool 110
123, under the drive of the transmission mechanism, valve rod 120 can move up or down, and the movement with movable valve plug 110.In valve rod
120 engaging portion 122 is provided with reducer (not indicating), and the diameter of reducer gradually subtracts towards the direction close to exposed portion 121
It is small.Setting in this way, when open and close valve 100 is closed, transmission mechanism driving stem 120 is moved up, and with movable valve plug 110
It is run towards the direction of valve seat 130.After spool 110 is contacted with valve seat 130, moving up for spool 110 is prevented from, and valve rod 120 is but
It can continue to move up a small distance.Spool 110 is with respect to 120 slide downward of valve rod, the thrust outside by reducer, spool at this time
It is pressed further by between 110 and valve seat 130, achievees the effect that tight seal.
Further, reducer can be processed into integral structure by directly on valve rod 120, can also by
Valve rod 120 outer additional structure is realized.In the present embodiment, in order to facilitate the processing and maintenance of valve rod 120, valve rod 120 remains unchanged
It is processed to straight-bar, reducer is realized by being arranged tapered sleeve 124 on the outside of valve rod 120, and the diameter of tapered sleeve 124 is towards close to naked
The direction in dew portion 121 is gradually reduced.Correspondingly, one of annular groove can be set by means such as turning at the middle part of valve rod 120
(not indicating) is used to accommodate tapered sleeve 124.Optionally, it is replaced for the ease of the disassembly of tapered sleeve 124, referring to shown in Fig. 2, tapered sleeve 124
Two and half tapered sleeves 1241 are divided by the plane by its axis, when being installed, two and half tapered sleeves 1241 are pieced together into cone
Set 124.It can not have to connection between two and half tapered sleeves 1241, it can be fixed by spool 110.
As shown in Figure 1, engaging portion 122 is provided with locking nut 125, locking nut 125 in one end far from exposed portion 121
Valve rod 120 and spool 110 are connected.The bottom convex of locking nut 125 is equipped with one section of annular convex platform 1251, to spool
110 bottom is abutted, and makes valve rod 120 when moving upwards, and can be moved together with movable valve plug 110.Meanwhile spool 110
The projection section of lower end is equipped with screw thread, installs and uses for locking nut 125.But since spool 110 has certain deformation quantity, lock
The fixation of tight nut 125 can't be entirely limited the opposite sliding of valve rod 120 and spool 110, to guarantee that tapered sleeve 124 can push
Spool 110 expands outwardly.The bottom of locking nut 125 is provided with outer hexagonal structure 1252, tightens use, easy access for spanner
Dismounting.
Further, open and close valve 100 further includes protective cover 140, and protective cover 140 is sheathed on exposed 121 outside of portion.Protective cover
140 is generally round table-like, and diameter is gradually increased towards the direction close to spool 110.Spool 110 has towards exposed portion 121
Upper surface 112, protective cover 140 have close to spool 110 upset 141, and far from spool 110 tiny end 142, slightly
The diameter of big end 141 is slightly larger than the diameter of upper surface 112.When carrying out deslagging operation, the dregs fallen by top can be along guarantor
The surface of shield 140 slides towards the side of spool 110, to play a protective role to spool 110.
Similarly, in order to facilitate the demolition and maintenance of protective cover 140, protective cover 140 is divided by the plane of its axis
Two and half protective covers, two and half protective covers piece together protective cover 140.Further, exposed portion 121 is close to spherical end 123
Position be provided with through-hole (not indicating), through-hole along spool 110 diametrical direction be arranged.Two and half protective covers are provided with and lead to
The corresponding pin hole in hole (not indicating), two and half protective covers can pass through the fixed pin 143 across through-hole and two pin holes after split
It is fixed.In addition, offer multiple slots in the upper surface of spool 110 112, can with 140 bottom of protective cover is set
Bolt is cooperated, and protective cover 140 is fixed.
The valve seat 130 of open and close valve 100 includes support 131 and sealing ring 132, and matching hole is located at the middle part of support 131, is sealed
Ring 132 is set to the inner wall of matching hole.Sealing ring 132 is made of elastic material, can occur one under the extruding of spool 110
Determine the deformation of degree, the sealing effect between Lai Zengqiang spool 110 and valve seat 130.Further, due to spool 110 and valve seat
130 action site can set L shape for the section of sealing ring 132 in the lower edge of matching hole, to the lower edge of matching hole into
Row protection.Correspondingly, the inner wall of matching hole is provided with the ladder-like boss cooperated with sealing ring 132, from top and two, outside
Sealing ring 132 is supported on direction.
In conclusion the embodiment of the invention provides a kind of open and close valve 100 for gasification of coal lock slag lock, including spool
110 and valve rod 120, spool 110 is sheathed on 120 outside of valve rod, and valve rod 120 includes the engaging portion 122 in spool 110, with
And the exposed exposed portion 121 except spool 110；Exposed portion 121 is provided with far from one end of spool 110 to be used for and transmission mechanism
Constitute the spherical end 123 of spherical hinge structure；Engaging portion 122 is provided with reducer, and the diameter of reducer is towards close to exposed portion 121
Direction be gradually reduced.Open and close valve 100 close when, transmission mechanism driving stem 120 moves up, and with movable valve plug 110 towards
The direction of valve seat 130 is run.After spool 110 is contacted with valve seat 130, moving up for spool 110 is prevented from, and valve rod 120 but can be after
It is continuous to move up a small distance.Spool 110 is with respect to 120 slide downward of valve rod, the thrust outside by reducer, spool 110 at this time
It is pressed further by between valve seat 130, achievees the effect that tight seal.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of open and close valve for gasification of coal lock slag lock, including spool and valve rod, which is characterized in that the valve core housing is set to institute
It states on the outside of valve rod, the valve rod includes the engaging portion and the exposed exposed portion except the spool in the spool；
The exposed portion is provided with the spherical end for constituting spherical hinge structure with transmission mechanism far from one end of the spool；The knot
Conjunction portion is provided with reducer, and the diameter of the reducer is gradually reduced towards the direction close to the exposed portion.
2. the open and close valve according to claim 1 for gasification of coal lock slag lock, which is characterized in that the valve rod includes cone
Set, the tapered sleeve are sheathed on the outside of the engaging portion to form the reducer, and the diameter of the tapered sleeve is towards close to described naked
The direction in dew portion is gradually reduced.
3. the open and close valve according to claim 2 for gasification of coal lock slag lock, which is characterized in that the tapered sleeve is passed through it
The plane of axis is divided into two and half tapered sleeves, and two half tapered sleeves piece together the tapered sleeve.
4. the open and close valve according to claim 3 for gasification of coal lock slag lock, which is characterized in that the engaging portion is separate
The one end in the exposed portion is provided with locking nut, and the locking nut connects the valve rod with the spool.
5. the open and close valve according to claim 1 for gasification of coal lock slag lock, which is characterized in that the open and close valve further includes
Protective cover, the protective cover are sheathed on the outside of the exposed portion, and the protective cover is generally round table-like, and diameter is towards close to institute
The direction for stating spool is gradually increased.
6. the open and close valve according to claim 5 for gasification of coal lock slag lock, which is characterized in that the spool has direction
The upper surface in the exposed portion, the protective cover have the upset close to the spool, and tiny far from the spool
End, the diameter of the upset are slightly larger than the diameter of the upper surface.
7. the open and close valve according to claim 6 for gasification of coal lock slag lock, which is characterized in that the protective cover is passed through
The plane of its axis is divided into two and half protective covers, and two half protective covers piece together the protective cover.
8. the open and close valve according to claim 7 for gasification of coal lock slag lock, which is characterized in that the exposed portion is close
The position of the spherical end is provided with through-hole, and the through-hole is arranged along the diametrical direction of the spool；Two described half are protected
Cover be provided with pin hole corresponding with the through-hole, two half protective covers after split, can by pass through the through-hole and
The fixed pin of two pin holes is fixed.
9. the open and close valve according to claim 1 for gasification of coal lock slag lock, which is characterized in that the open and close valve further includes
Valve seat, the valve seat include support and sealing ring, and the matching hole with spool cooperation is formed in the middle part of the support, described
Sealing ring is set to the inner wall of the matching hole.
10. the open and close valve according to claim 9 for gasification of coal lock slag lock, which is characterized in that the sealing ring is cut
Face is L shape, and the inner wall of the matching hole is provided with the ladder-like boss with sealing ring cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511388.4A CN110094528B (en) | 2019-06-13 | 2019-06-13 | A open and close valve for gasification coal lock sediment lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910511388.4A CN110094528B (en) | 2019-06-13 | 2019-06-13 | A open and close valve for gasification coal lock sediment lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110094528A true CN110094528A (en) | 2019-08-06 |
| CN110094528B CN110094528B (en) | 2024-06-21 |
Family
ID=67450859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910511388.4A Active CN110094528B (en) | 2019-06-13 | 2019-06-13 | A open and close valve for gasification coal lock sediment lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110094528B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2253960A1 (en) * | 1973-12-07 | 1975-07-04 | Utsue Valve Co Ltd | Locking device for fixing a valve to its stem - collar and end of stem fit within recess of the valve |
| CN2231255Y (en) * | 1995-06-28 | 1996-07-17 | 太原重机煤气设备工程公司 | Double bell-jar coal feeder for gas producer |
| CN1399086A (en) * | 2001-07-22 | 2003-02-26 | 孙德宣 | Up-sealed downstream sealed valve |
| US20070251588A1 (en) * | 2006-04-27 | 2007-11-01 | Linder James C | Poppet valve |
| CN201074678Y (en) * | 2007-07-25 | 2008-06-18 | 北京东方诚益通工业自动化技术有限公司 | Diaphragm type break valve |
| CN102943910A (en) * | 2012-12-03 | 2013-02-27 | 卓旦春 | Static balance valve |
| DE102012112605A1 (en) * | 2012-12-19 | 2014-06-26 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Pneumatic seat valve for switching compressed air supplied by compressed air connection to adjacent working connection by axially movable switching plunger, has sealing ring that is held on cone plate formed on switching plunger |
| CN103899775A (en) * | 2014-03-19 | 2014-07-02 | 哈尔滨工程大学 | Hydraulic self-locking type kingston valve |
| CN206694599U (en) * | 2017-03-30 | 2017-12-01 | 陕西航天动力高科技股份有限公司 | Inner elements of check valve and check valve |
| CN207005318U (en) * | 2017-06-17 | 2018-02-13 | 嘉兴依相动力科技有限公司 | A kind of high pressure needle valve-type pressure reduction structure |
| CN207195694U (en) * | 2017-08-05 | 2018-04-06 | 玉环迅琪阀门制造有限公司 | A kind of novel cutoff valve |
| CN209925652U (en) * | 2019-06-13 | 2020-01-10 | 云南煤化集团工程技术有限公司 | Opening and closing valve for gasified coal slag lock |
-
2019
- 2019-06-13 CN CN201910511388.4A patent/CN110094528B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2253960A1 (en) * | 1973-12-07 | 1975-07-04 | Utsue Valve Co Ltd | Locking device for fixing a valve to its stem - collar and end of stem fit within recess of the valve |
| CN2231255Y (en) * | 1995-06-28 | 1996-07-17 | 太原重机煤气设备工程公司 | Double bell-jar coal feeder for gas producer |
| CN1399086A (en) * | 2001-07-22 | 2003-02-26 | 孙德宣 | Up-sealed downstream sealed valve |
| US20070251588A1 (en) * | 2006-04-27 | 2007-11-01 | Linder James C | Poppet valve |
| CN201074678Y (en) * | 2007-07-25 | 2008-06-18 | 北京东方诚益通工业自动化技术有限公司 | Diaphragm type break valve |
| CN102943910A (en) * | 2012-12-03 | 2013-02-27 | 卓旦春 | Static balance valve |
| DE102012112605A1 (en) * | 2012-12-19 | 2014-06-26 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Pneumatic seat valve for switching compressed air supplied by compressed air connection to adjacent working connection by axially movable switching plunger, has sealing ring that is held on cone plate formed on switching plunger |
| CN103899775A (en) * | 2014-03-19 | 2014-07-02 | 哈尔滨工程大学 | Hydraulic self-locking type kingston valve |
| CN206694599U (en) * | 2017-03-30 | 2017-12-01 | 陕西航天动力高科技股份有限公司 | Inner elements of check valve and check valve |
| CN207005318U (en) * | 2017-06-17 | 2018-02-13 | 嘉兴依相动力科技有限公司 | A kind of high pressure needle valve-type pressure reduction structure |
| CN207195694U (en) * | 2017-08-05 | 2018-04-06 | 玉环迅琪阀门制造有限公司 | A kind of novel cutoff valve |
| CN209925652U (en) * | 2019-06-13 | 2020-01-10 | 云南煤化集团工程技术有限公司 | Opening and closing valve for gasified coal slag lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110094528B (en) | 2024-06-21 |
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