CN109780236A - The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe - Google Patents
The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe Download PDFInfo
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- CN109780236A CN109780236A CN201910083736.2A CN201910083736A CN109780236A CN 109780236 A CN109780236 A CN 109780236A CN 201910083736 A CN201910083736 A CN 201910083736A CN 109780236 A CN109780236 A CN 109780236A
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- Prior art keywords
- valve plate
- metallic particles
- flange
- plate
- quickly
- 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.)
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Links
- 239000013528 metallic particle Substances 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 16
- 230000002265 prevention Effects 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- Details Of Valves (AREA)
- Sliding Valves (AREA)
Abstract
The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe, overcome the prior art be easy to get stuck and valve plate when moving on valve seat, there are single-cantilever phenomenons, the problem of influencing the stability and reliability of valve plate movement, it is characterized in being connected with the combination valve plate being made of metal valve plate and graphite valve plate in the output end of valve plate driving device, discharge port is provided on metal valve plate, cylindrical baffle is connected on charging flange inner wall, metallic particles is prevented to enter movement clearance for the first time by cylindrical baffle, spring compression mechanism is separately installed in the two sides of charging flange and the two sides of blowdown flange, playing second of pressuring action to combination valve plate by the rectangle baffle in spring compression mechanism prevents metallic particles from entering movement clearance, beneficial effect is to realize no stuck phenomenon, it avoids metallic particles breakage or squeezes broken The phenomenon that, the stability and reliability of combination valve plate movement are improved, to improve the service life of gate valve.
Description
Technical field
The invention belongs to technical field of vacuum equipment, flow in vacuum pipe in particular for ADS spallation target metallic particles
The mobile mechanism for quickly obstructing and circulating when dynamic, in particular to for quickly obstructing and flowing when metallic particles flowing in vacuum pipe
Logical gate valve.
Background technique
ADS(Accelerator driven radioactive clean nuclear power apparatus clean radioactivity nuclear energy system) due to its good economy of resources, environmental benefit and safety
Benefit and the selection for becoming nuclear power source of new generation, form a research hotspot in the world in recent years.Spallation target is the system
One key and the great important component of technical difficulty.In the prior art, it is used for ADS spallation target metallic particles in vacuum pipe
The gate valve for quickly obstructing and circulating when flowing includes valve seat and the valve plate that is mounted in valve seat, is equipped in the inside of valve seat
The reciprocating motion of disc support block, valve plate is realized by the idler wheel or bearing of the installation of valve plate two sides, when valve plate arrives at the top of valve seat
When, the inclined-plane of valve plate bottom jacks up valve plate by disc support block Wedge type, makes the upper of valve plate with after the contact of incline plane of valve seat end
Surface is contacted with the inlet flange of valve seat, achievees the purpose that barrier metal granule materials, the problem is that, due to leaning on valve plate branch
Bracer squeezes valve plate and reaches barrier metal granule materials, and having metallic particles material in this process, (tungsten that diameter is 1mm closes
Gold goal) it is damaged or be squeezed broken phenomenon, in long-term use process, these damaged metallic particles materials can be full of valve plate and valve seat
Gap between upper and lower plates is entered inside valve seat by the gap between valve plate and valve seat upper and lower plates, thus keep valve plate stuck,
Cause gate valve to reduce the service life or be not available, especially, higher occasion is required for gate valve, such as diameter is less than
The valve plate mobile mechanism of the occasion that the metallic particles material of 1mm is quickly obstructed and circulated, prior art gate valve is unable to satisfy directly
The needs that metallic particles material of the diameter less than 1mm is effectively quickly obstructed and circulated.
Application No. is the utility models of CN201720906137.2 to disclose " a kind of gate valve of easy access ", this is practical
The novel valve body including being formed with material channel, the valve plate moved between the position closed or open material channel, setting exist
The roller group of support valve plate is used in valve body, roller group to include multiple idler wheels along the arrangement of valve plate moving direction, the roller group
It is installed on valve body by detachable structure, the roller group includes first group and support of the valve plate that support is in the open position
Second group of valve plate in detent position, first group and second group passes through the detachable structure respectively and is installed on valve body,
The gate valve of above-mentioned easy access, only idler wheel is mounted on valve body by detachable structure, realizes that overall structure is detachable, but
With the not substantive difference of the valve plate mobile mechanism of above-mentioned gate valve in overall structure, diameter is equally unable to satisfy less than 1mm
Metallic particles material effectively quickly obstruct and circulate needs.
Application No. is the disclosure of the invention of CN201710603875.4 " a kind of gate valve ", which includes valve seat, valve seat
Above have and be in material channel on material transport path, passing through for material when using, when reciprocating movement being installed on valve seat
The valve plate for cutting off and being connected the material channel, the wall surface for surrounding material channel, which is equipped with, leads valve plate when valve plate is mobile
To guide groove, the guide groove valve plate cut off material channel when close to valve plate inner end one end with surround material channel wall surface it
Between there is gap, if jumping a queue in guide groove has material, during valve plate is mobile, material can be driven by valve plate and from guide groove
The port positioned at gap location flow out, avoid material in this way and jump a queue not being discharged in guide groove and occur getting stuck, influence valve
The problem of plate opens and closes, still, the end of valve plate and guide groove, which are located between the port of gap location, does not have seal approach, moves in valve plate
During, material still can enter in the gap between guide groove and valve plate, so that the unlatching and closure of valve plate are influenced, moreover,
The one end of valve plate when being moved on valve seat far from driving device there are single-cantilever phenomenon, will affect valve plate movement stability and can
By property, equally it is unable to satisfy metallic particles material of the diameter less than 1mm and effectively quickly obstructs and circulate, especially in vacuum state
The lower needs for quickly obstructing and circulating.
Summary of the invention
The technical problem to be solved by the present invention is to it is small to solve ADS spallation target diameter in place of overcome the deficiencies in the prior art
In the reliability and the operation is stable of the mobile mechanism that the tungsten alloy ball particle of 1mm is quickly obstructed and circulated when vacuum pipe flows
Property the technical issues of, provide a kind of metallic particles less than 1mm under vacuum conditions effectively can quickly be obstructed in flowing and
Circulation, and stability and high reliablity can avoid getting stuck quick for metallic particles under vacuum state with blank phenomenon completely
The gate valve of barrier and circulation.
The technical side that the present invention uses includes between rectangular housing, charging flange, blowdown flange, valve plate driving device and movement
Gap is connected with the combination valve plate being made of metal valve plate and graphite valve plate in the output end of the valve plate driving device, in metal
It is provided with discharge port on valve plate, is connected with cylindrical baffle on charging flange inner wall, gold is prevented by cylindrical baffle for the first time
Metal particles enter movement clearance, are separately installed with spring compression in the two sides of the charging flange and the two sides of the blowdown flange
Mechanism plays second of pressuring action to combination valve plate by spring compression mechanism and metallic particles is prevented to enter movement clearance.
The spring compression mechanism includes the rectangular flange set being welded in rectangular housing upper plate and lower plate, in each rectangle
Rectangle baffle is installed in flange sleeve, counterbore is machined on rectangle baffle, holddown spring is installed in counterbore, in Rectangular Method
The end face of orchid set is equipped with sealing flange, and positioning pin is welded among the sealing surface of sealing flange, and positioning pin insertion compresses bullet
Positioning action is played to holddown spring in spring, pressuring action is played to combination valve plate by the rectangle baffle in spring compression mechanism
Second of prevention metallic particles enters movement clearance.
The rectangular housing is made of upper plate, lower plate, foreboard, back plate and left side plate and right end rectangular flange, in the square
Stiffener plate is welded on the upper plate and lower plate of shape shell.
The cylindrical baffle is made of stainless steel.
The rectangle baffle is made of brass material.
It is equipped between the sealing flange and rectangular flange set for vacuum-packed sealing ring.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is due to being provided with discharging on metal valve plate using the combination valve plate being made of metal valve plate and graphite valve plate
Mouthful, it is connected with cylindrical baffle on charging flange inner wall, prevents metallic particles from entering movement for the first time by cylindrical baffle
Gap is separately installed with spring compression mechanism in the two sides of the charging flange and the two sides of the blowdown flange, passes through spring
Rectangle baffle in hold-down mechanism plays second of pressuring action to combination valve plate and metallic particles is prevented to enter movement clearance, i.e., logical
It crosses 2 prevention metallic particles and enters movement clearance, metal particulate material can be made to be free in combination valve plate and charging flange always
Between, and discharging can will be carried out by remaining metallic particles material in movement clearance by discharging flange, it realizes without stuck
Phenomenon；It avoids metallic particles breakage or squeezes broken phenomenon；
(2) present invention is due to using the combination valve plate that is made of metal valve plate and graphite valve plate, and wherein graphite valve plate not only can be with
Closing is realized to the both ends of metal valve plate, metallic particles material is avoided to enter movement clearance, can also make to combine valve plate reduction fortune
Resistance when dynamic, improves the stability and reliability of combination valve plate movement, to improve barrier and velocity of liquid assets and steady
Property；
(3) present invention due to charging flange by cylindrical baffle with combine valve plate and be in close contact completely and 4 spring compressions
Mechanism by rectangle baffle with combine valve plate and be in close contact completely, allow entire mechanism be horizontally mounted or from the horizontal by
Any angle inclination installation, that is, be not limited to be horizontally mounted, also be adapted under charging line inclination conditions in 45 degree of angles
Installation makes the present invention be adapted to the needs of vertical or inclined charging line installation, so as to widely be answered
With, and facilitate the installation of client.
Test proves that the present invention realizes the tungsten alloy ball granule materials for ADS spallation target 0.5mm in vacuum pipe
It effectively quickly obstructs and circulates when flowing, and 5000 times without stuck phenomenon, eliminates metallic particles in barrier and the process of circulation
Broken phenomenon is squeezed in the breakage of material, pneumatic in driving method to realize with electronic.
Detailed description of the invention
Fig. 1 is main view of the invention,
Fig. 2 is the top view of Fig. 1,
Fig. 3 is the A-A cross-sectional view of Fig. 2,
Fig. 4 is the B-B cutaway view Amplified image of Fig. 2.
In figure:
1. rectangular housing,
1. rectangular flange of 1-, 1-2. charging flange, 1-3. discharging flange,
2. combining valve plate
2-1 metal valve plate, 2-1-1. discharge port
2-2. graphite valve plate, 2-3. sunk screw,
3. upper reinforcing plate,
4. lower reinforcing plate,
5. spring compression mechanism,
5-1. sealing flange, 5-2. positioning pin,
5-3. holddown spring, 5-4. sealing ring,
5-5. rectangle baffle, 5-6. rectangular flange set,
6. cylindrical baffle,
7. valve plate driving device,
7-1. valve plate driving device flange,
8. movement clearance.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.
As shown in Figures 1 to 4, the technical solution adopted by the present invention includes by upper plate, lower plate, foreboard, back plate and left side plate
And the rectangular housing 1 of right end rectangular flange 1-1 composition, upper reinforcing rib is welded on the upper plate of the rectangular housing 1 and lower plate
Plate 3 and lower stiffener plate 4 are connected with valve plate driving device 7, rectangular housing 1 and valve plate driving device in the right end of rectangular housing 1
7 connections are real by the connection of the rectangular flange 1-1 of rectangular housing 1 and the valve plate driving device flange 7-1 of valve plate driving device 7
It is existing, the combination valve plate 2 being made of metal valve plate 2-1 and graphite valve plate 2-2, institute are connected in the output end of valve plate driving device 7
It states metal valve plate 2-1 to be connected with graphite valve plate 2-2 with sunk screw 2-3,1 discharge port 2-1- is provided on metal valve plate 2-1
1, it is provided with circular through hole on the upper plate of rectangular housing 1, circular charging flange 1-2 is welded on the circular through hole, it is described
The discharge port 2-1-1 and charging flange 1-2 in rectangular housing 1 combined on valve plate 2 is concentric with circle, in the upper plate of rectangular housing 1
It is equipped with movement clearance 8 between valve plate 2 with combining, also is provided with movement clearance 8 between valve plate 2 with combining in the lower plate of rectangular housing 1,
It is connected with screw for preventing metallic particles material from entering movement clearance 8 for the first time on circular charging flange 1-2 inner wall
Using stainless steel material make the cylindrical baffle 6 with flange, blowdown hole is provided in the lower plate of rectangular housing 1,
It is welded with circular blowdown flange 1-3 on the blowdown hole, feeds flange 1-2's and discharging flange 1-3 in the rectangular housing 1
The left and right sides is separately installed with 4 sleeve spring hold-down mechanisms 5；The spring compression mechanism 5 includes being welded in the upper of rectangular housing 1
Rectangular flange on the upper and lower plate of plate covers 5-6, is equipped in each rectangular flange set 5-6 and prevents metallic particles for second
Into the rectangle baffle 5-5 of movement clearance 8 made of brass material, it is machined with counterbore on rectangle baffle 5-5, in counterbore
In holddown spring 5-3 is installed, rectangular flange set 5-6 end face sealing flange 5-1 is installed, in the close of sealing flange 5-1
It is welded with positioning pin 5-2 among cover, positioning action is played to holddown spring 5-3 in positioning pin 5-2 insertion holddown spring 5-3,
Holddown spring 5-3 is pressed between sealing flange 5-1 and rectangle baffle 5-5, and by rectangle baffle 5-5 to combination valve plate 2
Pressuring action is played, so that playing second of prevention metallic particles enters movement clearance 8, in sealing flange 5-1 and rectangular flange
It is equipped between set 5-6 for vacuum-packed sealing ring 5-4.
In use, the charging flange 1-2 and discharging flange 1-3 by rectangular housing 1 are connect with vacuum line, in gate valve
Under closed state, i.e., combination valve plate 2 discharge port 2-1-1 leave charging flange 1-2, cylindrical baffle 6 with combine valve plate 2 closely
The barrier of metallic particles material is realized in cooperation, and metallic particles material accumulation is on the combination valve plate 2 in cylindrical baffle 6 at this time；When
When needing to open, combination valve plate 2 moved under the driving of valve plate driving device 7, when combination valve plate 2 on discharge port 2-1-1 with
When feeding the centre bore coincidence of flange 1-2, metallic particles material realizes circulation；Conversely, when valve plate driving device 7 drives combination valve
Plate 2 return when, return to original state, can barrier metal granule materials pass through；The rectangle baffle 5-5 of spring compression mechanism 5 exists
It is in close contact always with the metal valve plate 2-1 for combining valve plate 2 under the action of holddown spring 5-3, graphite valve plate 2-2 is to metal valve plate
Closing is realized at the both ends of 2-1, and metallic particles material is further prevented to enter movement clearance 8, this plate valve plate is largely transported repeatedly
Row test proves, in the closed state, being provided with dumping pit 2-1-1 and combination valve plate 2 and 1 lower plate of rectangular housing on combination valve plate 2
Also there are movement clearances 8, discharging can will be carried out by remaining metallic particles material in movement clearance 8, so the present invention realizes
Without stuck phenomenon；And the graphite valve plate 2-2 of leaching antimony graphite material production is selected, coefficient of friction can be effectively reduced, is improved
The bearing capacity of metallic particles material effectively increases the service life of equipment.
Claims (6)
1. the gate valve for quickly obstructing and circulating when metallic particles flowing in vacuum pipe, including rectangular housing (1), charging
Flange (1-2), blowdown flange (1-3), valve plate driving device (7) and movement clearance (8), which is characterized in that driven in the valve plate
The output end of dynamic device (7) is connected with the combination valve plate (2) being made of metal valve plate (2-1) and graphite valve plate (2-2), in metal
It is provided with discharge port (2-1-1) on valve plate (2-1), is connected with cylindrical baffle (6) on charging flange (1-2) inner wall, passes through circle
Cylindrical baffle (6) prevents metallic particles from entering movement clearance (8) for the first time, in charging two sides of flange (1-2) and described
The two sides of blowdown flange (1-3) are separately installed with spring compression mechanism (5), by spring compression mechanism (5) to combination valve plate (2)
Playing second of pressuring action prevents metallic particles from entering movement clearance (8).
2. the gate valve according to claim 1 for quickly obstructing and circulating when metallic particles flowing in vacuum pipe,
It is characterized in that, the spring compression mechanism (5) includes the rectangular flange set being welded on the upper and lower plate of rectangular housing (1) upper plate
(5-6) is equipped with rectangle baffle (5-5) in each rectangular flange set (5-6), is machined with counterbore on rectangle baffle (5-5),
Holddown spring (5-3) is installed in counterbore, sealing flange (5-1) is installed in the end face of rectangular flange set (5-6), is being sealed
It is welded among the sealing surface of flange (5-1) positioning pin (5-2), positioning pin (5-2) is inserted into holddown spring (5-3) to compression bullet
Spring (5-3) plays positioning action, plays compression to combination valve plate (2) by the rectangle baffle (5-5) in spring compression mechanism (5)
Second of prevention metallic particles of effect enters movement clearance (8).
3. according to claim 1 with the plate for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe
Valve, which is characterized in that the rectangular housing (1) is by upper plate, lower plate, foreboard, back plate and left side plate and right end rectangular flange (1-1)
Composition, is welded with upper stiffener plate (3) and lower stiffener plate (4) on the upper plate of the rectangular housing (1) and lower plate.
4. the gate valve according to claim 1 for quickly obstructing and circulating when metallic particles flowing in vacuum pipe,
It is characterized in that, the cylindrical baffle (6) is made of stainless steel material.
5. the gate valve according to claim 2 for quickly obstructing and circulating when metallic particles flowing in vacuum pipe,
It is characterized in that, the rectangle baffle (5-5) is made of brass material.
6. the gate valve according to claim 2 for quickly obstructing and circulating when metallic particles flowing in vacuum pipe,
It is characterized in that, being equipped between the sealing flange (5-1) and rectangular flange set (5-6) for vacuum-packed sealing ring
(5-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083736.2A CN109780236A (en) | 2019-01-29 | 2019-01-29 | The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083736.2A CN109780236A (en) | 2019-01-29 | 2019-01-29 | The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109780236A true CN109780236A (en) | 2019-05-21 |
Family
ID=66502820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910083736.2A Withdrawn CN109780236A (en) | 2019-01-29 | 2019-01-29 | The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109780236A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619771A (en) * | 2009-03-10 | 2010-01-06 | 朱国辉 | Simply-closed elastic knife gate valve |
| CN201992165U (en) * | 2011-04-14 | 2011-09-28 | 张伟 | Sliding plate valve |
| CN202580082U (en) * | 2012-05-08 | 2012-12-05 | 黄德松 | Wear-free gate valve |
| CN104132150A (en) * | 2014-07-04 | 2014-11-05 | 丁洪超 | Novel hydraulic split gate valve |
| CN206754415U (en) * | 2017-04-17 | 2017-12-15 | 河南众森电力设备有限公司 | One kind singly drives electro-hydraulic push-pull valve |
| CN209671650U (en) * | 2019-01-29 | 2019-11-22 | 沈阳慧宇真空技术有限公司 | The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe |
-
2019
- 2019-01-29 CN CN201910083736.2A patent/CN109780236A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619771A (en) * | 2009-03-10 | 2010-01-06 | 朱国辉 | Simply-closed elastic knife gate valve |
| CN201992165U (en) * | 2011-04-14 | 2011-09-28 | 张伟 | Sliding plate valve |
| CN202580082U (en) * | 2012-05-08 | 2012-12-05 | 黄德松 | Wear-free gate valve |
| CN104132150A (en) * | 2014-07-04 | 2014-11-05 | 丁洪超 | Novel hydraulic split gate valve |
| CN206754415U (en) * | 2017-04-17 | 2017-12-15 | 河南众森电力设备有限公司 | One kind singly drives electro-hydraulic push-pull valve |
| CN209671650U (en) * | 2019-01-29 | 2019-11-22 | 沈阳慧宇真空技术有限公司 | The gate valve for quickly obstructing and circulating when being flowed for metallic particles in vacuum pipe |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190521 |