CN110107703B - Full-floating double-sealing high-temperature gate valve - Google Patents
Full-floating double-sealing high-temperature gate valve Download PDFInfo
- Publication number
- CN110107703B CN110107703B CN201910369956.1A CN201910369956A CN110107703B CN 110107703 B CN110107703 B CN 110107703B CN 201910369956 A CN201910369956 A CN 201910369956A CN 110107703 B CN110107703 B CN 110107703B
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- Prior art keywords
- valve plate
- valve
- sealing
- sealing ring
- elastic sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 106
- 238000007667 floating Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
A fully floating double-sealing high-temperature gate valve. The main poor, the problem that the life-span is low of current push-pull valve of solving. The method is characterized in that: the valve plate is provided with a floating mechanism for driving the valve plate to transversely float; the valve body is provided with a sealing surface capable of being in sealing fit with the valve plate, the valve body of the outer ring of the sealing surface is provided with an annular concave groove, an elastic sealing ring is arranged in the annular concave groove, and the transverse distance between the elastic sealing ring and the valve plate in a free state is smaller than that between the sealing surface and the valve plate. The sealing device has the advantages that 1, the sealing surface and the valve plate form a first layer of sealing, the elastic sealing ring and the valve plate form a second layer of sealing, double-layer sealing is realized, and sealing is ensured; 2. the elastic sealing ring is arranged on the outer ring of the first sealing surface, so that the elastic sealing ring is prevented from contacting with a medium flow, abrasion and deformation are avoided, meanwhile, the valve plate is arranged in a floating mode, the elastic sealing ring can push away the valve plate in the opening and closing process, abrasion between the valve plate and the sealing surface is avoided, and the service life of the elastic sealing ring can be greatly prolonged while sealing is ensured.
Description
Technical Field
The invention relates to a gate valve, in particular to a full-floating double-seal high-temperature gate valve.
Background
The gate valve is light in weight, simple to install and wide in application range, and is widely used for materials and gas pipelines of enterprises such as steel, mines and coking.
Along with the improvement of the capacity of each system, the performance requirements on the gate valve are higher and higher, and especially the requirements on the high temperature resistance, the sealing performance and the stability of the gate valve are stricter, and the prior gate valve is too simple in structure, poor in sealing and low in strength, and cannot be used or has very short service life under the working conditions of high temperature and strong sealing.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides a full-floating double-seal high-temperature gate valve, which solves the problems of poor sealing and low service life of the existing gate valve.
The invention adopts the technical scheme that: the full-floating double-seal high-temperature gate valve comprises a valve body, a valve plate and a valve rod, wherein the valve plate is inserted into the valve body, and the valve plate is connected with the valve rod and can drive the valve body to slide up and down along the valve body; the valve plate is also provided with a floating mechanism for driving the valve plate to transversely float; the valve body is provided with a sealing surface capable of being in sealing fit with the valve plate, the valve body of the outer ring of the sealing surface is provided with an annular concave groove, an elastic sealing ring is arranged in the annular concave groove, and the transverse distance between the elastic sealing ring and the valve plate in a free state is smaller than that between the sealing surface and the valve plate.
The floating mechanism is arranged on the other end surface of the valve plate opposite to the sealing surface and comprises a lifting nut, a nut positioning seat, a positioning support, a vertical plate and a sliding pin; the center of the lifting nut is provided with a threaded hole which is longitudinally arranged, the valve rod is a screw rod and is matched with the threaded hole, and guide blocks are arranged on two side walls of the lifting nut; the nut positioning seat is fixedly arranged in the middle of the upper side of the valve plate, the nut positioning seat is provided with a mounting groove matched with the lifting nut, two side walls of the mounting groove are provided with first guide grooves which are obliquely arranged, the lifting nut is arranged in the mounting groove, and the guide blocks are in sliding fit with the first guide grooves; the positioning support is arranged at two sides of the valve plate, is provided with a plurality of second guide grooves which are obliquely arranged, and the bottom edge of the positioning support is lower than the bottom edge of the valve plate; the vertical plates are arranged at the edges of two sides of the valve plate, and positioning pin holes corresponding to the second guide grooves are formed in the vertical plates; the sliding pin passes through the second guide groove and is arranged with the positioning pin hole, and the vertical plate is connected with the positioning support.
The vertical plate and the valve plate are integrally formed, and a reinforcing rib plate is formed between the vertical plate and the valve plate.
And the valve body is integrally welded and formed.
The valve body is formed by welding Q345B steel.
The elastic sealing ring is made of metal materials, the outer ring of the elastic sealing ring is welded with the valve body, and the inner ring of the elastic sealing ring is obliquely arranged towards the valve plate.
The elastic sealing ring is characterized in that the inner ring of the elastic sealing ring is bent and comprises a sealing part sealed with the valve plate, a contact part capable of abutting against the valve body and a connecting part for connecting the sealing part with the contact part, and the section of the elastic sealing ring is of a J-shaped structure.
The valve plate and the elastic sealing ring are both made of SUS304 stainless steel materials.
The beneficial effects of the invention are as follows: 1. a first layer of seal is formed between the sealing surface of the valve body and the valve plate, and a second layer of seal is formed between the elastic sealing ring and the valve plate, so that double-layer seal is realized, and the sealing performance is improved; 2. the elastic sealing ring is arranged on the outer ring of the first sealing surface, so that the elastic sealing ring is prevented from contacting with a medium flow, is free from abrasion and deformation, and is matched with the floating arrangement of the valve plate, so that the valve plate is pushed away in the opening and closing process to avoid contact abrasion of the valve plate and the sealing surface, and therefore the abrasion problems of the sealing surface, the elastic sealing piece and the valve plate are fewer, and the service life of the elastic sealing ring can be greatly prolonged while sealing is ensured.
Drawings
FIG. 1 is a schematic diagram 1 of a fully floating dual seal high temperature gate valve according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a fully floating dual seal high temperature gate valve according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a fully floating dual seal high temperature gate valve according to an embodiment of the present invention.
Fig. 4 is an enlarged schematic view at a in fig. 3.
Fig. 5 is a schematic structural view 1 of a valve plate and a lifting mechanism according to an embodiment of the present invention.
Fig. 6 is a schematic structural view 2 of a valve plate and a lifting mechanism according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a valve plate according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a lifting nut seat according to an embodiment of the invention.
Fig. 9 is a schematic structural view 1 of a lifting nut according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a lifting nut according to an embodiment of the invention 2.
Fig. 11 is a schematic structural view of a positioning support according to an embodiment of the present invention.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
As shown in the figure, the full-floating double-seal high-temperature gate valve comprises a valve body 1, a valve plate 2 and a valve rod 3, wherein the valve plate 2 is inserted into the valve body 1, the valve plate 2 is connected with the valve rod 3, the valve rod 3 is connected with an operation hand wheel, two vertically arranged slide rails 13 are formed in the valve body 1, the valve plate 2 is arranged between the two slide rails 13, and can slide up and down along the valve body 1 under the driving of the valve rod 3.
The valve plate 2 is further provided with a floating mechanism, and the valve plate 2 can transversely float in the opening and closing process through the floating mechanism, so that a certain offset exists between the opening and closing states of the valve plate 2.
The valve body 1 is provided with a sealing surface 11 which can be in sealing fit with the valve plate 2, the valve body 1 on the outer ring of the sealing surface 11 is provided with an annular concave groove 12, an elastic sealing ring 4 is arranged in the annular concave groove 12, and the transverse distance between the elastic sealing ring 4 and the valve plate 2 in a free state is smaller than the transverse distance between the sealing surface 11 and the valve plate 2.
The valve body 1 is integrally formed by welding Q345B metal steel, the valve plate 2 and the elastic sealing ring 4 are made of SUS304 stainless steel, the heat stability is good, high-temperature deformation compensation can be realized structurally, normal work can be realized below 450 ℃, high-temperature working conditions can be well adapted, and sealing is guaranteed.
The fully-floating double-seal high-temperature gate valve with the structure has the advantages that a first layer of seal is formed between the sealing surface 11 of the valve body 1 and the valve plate 2, and a second layer of seal is formed between the elastic sealing ring 4 and the valve plate 2, so that double-layer seal is realized, the sealing requirements of different system pressures can be met, and the sealing performance is further ensured.
Because elastic sealing ring 4 sets up at sealed face 11 outer lane to set up in forming annular recess 12 on valve body 1, when the valve is closed, elastic sealing ring 4 can avoid the direct contact with the medium flow, consequently guaranteed the no wearing and tearing of elastic sealing ring 4 and have not warp, the horizontal floating setting of cooperation valve plate 2 simultaneously makes valve plate 2 open and close the in-process, elastic sealing ring 4 can push away valve plate 2, avoid valve plate 2 at the in-process of opening and close with sealed face 11's direct contact wearing and tearing, avoid sealed face 11's wearing and tearing, consequently sealed face 11, elastic sealing ring 4, valve plate 2's wearing and tearing problem is all very few, when guaranteeing sealed, can greatly increased its life.
As shown in the figure, the floating mechanism is arranged on the other end surface of the valve plate 2 opposite to the sealing surface 11 and comprises a lifting nut 5, a nut positioning seat 6, a positioning support 7, a vertical plate 8 and a sliding pin 9.
The center of the lifting nut 5 is provided with a threaded hole 51 which is longitudinally arranged, the valve rod 3 is a screw rod and is matched with the threaded hole 51, and two side walls of the lifting nut 5 are provided with guide blocks 52; the nut positioning seat 6 is fixedly arranged at the middle position of the upper side of the valve plate 2, the nut positioning seat 6 is provided with a mounting groove 61 matched with the lifting nut 5, two side walls of the mounting groove 61 are provided with first guide grooves 62 which are obliquely arranged, the lifting nut 5 is arranged in the mounting groove 61, and the guide blocks 52 are in sliding fit with the first guide grooves 62; the positioning support 7 is arranged on two sides of the valve plate 2, the positioning support 7 is provided with a plurality of second guide grooves 71 which are obliquely arranged, and the bottom edge of the positioning support 7 is lower than the bottom edge of the valve plate 2; the vertical plates 8 are arranged at the edges of the two sides of the valve plate 2, and positioning pin holes 81 corresponding to the second guide grooves 71 are formed in the vertical plates 8; the sliding pin 9 passes through the second guide groove 71 and the positioning pin hole 81, and connects the vertical plate 8 and the positioning support 7.
When the valve is closed, the valve rod 3 is rotated through the hand wheel, the valve rod 3 drives the valve plate 2 to move downwards through being matched with the lifting nut 5, in the closing process, the positioning support 7 is firstly in contact with the bottom, the valve rod 3 is stopped to rotate downwards, the valve plate 2 is driven to move downwards continuously, at the moment, the valve plate 2 transversely slides along the second guide groove 71 due to the action of the second guide groove 71 and the sliding pin 9 on the positioning support 7 and is pushed to the sealing surface 11, meanwhile, the lifting nut 5 is also in the mounting groove of the nut positioning seat 6, the valve plate 2 is pushed to the sealing surface due to the action of the guide block 52 and the first guide groove 62, at the moment, the valve rod 3 is still kept at the center of the original shaft, and meanwhile, the valve plate is attached to the elastic sealing ring 4 and the sealing surface 11 in sequence, so that bidirectional sealing is realized.
When the valve is opened, the valve rod is reversely rotated through the hand wheel, the valve rod 3 is matched with the lifting nut 5 to drive the valve plate 2 to move upwards, and in the opening process, the valve plate can be rapidly separated from the sealing surface 11 under the action of the elastic sealing element 4, so that friction and abrasion with the sealing surface 11 are avoided.
In addition, the nut positioning seat 6 is connected to the valve plate 2 through bolt fastening, the vertical plate 8 and the valve plate 2 are integrally formed, and a reinforcing rib plate 82 is formed between the vertical plate 8 and the valve plate 2, so that the strength requirement is ensured, the structure is simple, and the installation is convenient.
The elastic sealing ring 4 is welded with the valve body 1 through the outer ring, and the inner ring is obliquely arranged towards the valve plate 2 to form the elastic performance.
The inner ring of the elastic sealing ring 4 is formed to be bent and arranged, the valve comprises a sealing part 41 sealed with the valve plate 2, a contact part 42 capable of abutting against the valve body 1, and a connecting part 43 for connecting the sealing part 41 with the contact part 42, the section of the elastic sealing ring 4 is of a J-shaped structure, when the valve is closed, the valve plate 2 is in contact sealing with the sealing part 41, and meanwhile, the contact part 42 of the valve plate is in contact with the end face of the annular concave groove 12 of the valve body 1, and the contact sealing is ensured by mutual abutting and pressing.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (5)
1. The full-floating double-seal high-temperature gate valve comprises a valve body (1), a valve plate (2) and a valve rod (3), wherein the valve plate (2) is inserted into the valve body (1), and the valve rod (3) is connected with the valve plate (2) and can drive the valve plate (2) to slide up and down along the valve body (1);
The method is characterized in that: the valve plate (2) is made of stainless steel materials, and a floating mechanism for driving the valve plate (2) to transversely float is further arranged on the valve plate (2); a sealing surface (11) capable of being in sealing fit with the valve plate (2) is formed on the valve body (1), an annular concave groove (12) is formed on the valve body (1) on the outer ring of the sealing surface (11), an elastic sealing ring (4) is arranged in the annular concave groove (12), and the transverse distance between the elastic sealing ring (4) and the valve plate (2) in a free state is smaller than the transverse distance between the sealing surface (11) and the valve plate (2); in the valve closing process, the valve plate is sequentially attached to the elastic sealing ring and the sealing surface to realize double-layer sealing;
the floating mechanism is arranged on the other end face of the valve plate (2) opposite to the sealing face (11) and comprises a lifting nut (5), a nut positioning seat (6), a positioning support (7), a vertical plate (8) and a sliding pin (9);
the center of the lifting nut (5) is provided with a threaded hole (51) which is longitudinally arranged, the valve rod (3) is a screw rod and is matched with the threaded hole (51), and guide blocks (52) are arranged on two side walls of the lifting nut (5);
The nut positioning seat (6) is fixedly arranged at the middle position of the upper side of the valve plate (2), the nut positioning seat (6) is provided with a mounting groove (61) matched with the lifting nut (5), two side walls of the mounting groove (61) are provided with first guide grooves (62) which are obliquely arranged, the lifting nut (5) is arranged in the mounting groove (61), and the guide blocks (52) are in sliding fit with the first guide grooves (62);
The positioning support (7) is arranged on two sides of the valve plate (2), the positioning support (7) is provided with a plurality of second guide grooves (71) which are obliquely arranged, and the bottom edge of the positioning support (7) is lower than the bottom edge of the valve plate (2);
the vertical plates (8) are arranged at the edges of two sides of the valve plate (2), and positioning pin holes (81) corresponding to the second guide grooves (71) are formed in the vertical plates (8);
the sliding pin (9) passes through the second guide groove (71) and the positioning pin hole (81) to connect the vertical plate (8) and the positioning support (7).
2. The fully floating double-seal high temperature gate valve of claim 1, wherein: the vertical plate (8) and the valve plate (2) are integrally formed, and a reinforcing rib plate (82) is formed between the vertical plate (8) and the valve plate (2).
3. The fully floating double-seal high temperature gate valve of claim 1, wherein: the valve body (1) is integrally welded and formed by adopting metal steel.
4. The fully floating double-seal high temperature gate valve of claim 1, wherein: the elastic sealing ring (4) is made of stainless steel materials, the outer ring of the elastic sealing ring is welded with the valve body (1), and the inner ring of the elastic sealing ring is obliquely arranged towards the valve plate (2).
5. The fully floating double-seal high temperature gate valve of claim 4, wherein: the inner ring of the elastic sealing ring (4) is bent and arranged, the elastic sealing ring comprises a sealing part (41) sealed with the valve plate (2), a contact part (42) capable of abutting against the valve body (1), and a connecting part for connecting the sealing part (41) with the contact part (42), and the section of the elastic sealing ring (4) is of a J-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369956.1A CN110107703B (en) | 2019-05-06 | 2019-05-06 | Full-floating double-sealing high-temperature gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369956.1A CN110107703B (en) | 2019-05-06 | 2019-05-06 | Full-floating double-sealing high-temperature gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110107703A CN110107703A (en) | 2019-08-09 |
| CN110107703B true CN110107703B (en) | 2024-05-24 |
Family
ID=67488094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369956.1A Active CN110107703B (en) | 2019-05-06 | 2019-05-06 | Full-floating double-sealing high-temperature gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107703B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685672Y (en) * | 2003-11-21 | 2005-03-16 | 林德宽 | Gate valve with adjustable combined spool |
| CN101915318A (en) * | 2010-08-09 | 2010-12-15 | 上海启会机电科技有限公司 | Wedge block jacking valve |
| CN202493705U (en) * | 2012-03-12 | 2012-10-17 | 湖南泵阀制造有限公司 | Bidirectional hard seal track spiral cone valve |
| CN103161969A (en) * | 2013-03-26 | 2013-06-19 | 山东鲁临阀门有限公司 | Floating sealing environment-friendly push-and-pull valve |
| CN204201139U (en) * | 2014-10-31 | 2015-03-11 | 天胜阀门集团有限公司 | A kind of plate valve of sealing surface separate mobile |
| CN204852399U (en) * | 2015-07-24 | 2015-12-09 | 伊马莱富（北京）制药系统有限公司 | Freeze -drying sampling device's isolation valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| DE102015010782A1 (en) * | 2015-08-20 | 2017-02-23 | Murrplastik Produktionstechnik Gmbh | Valve |
| CN106764008A (en) * | 2016-12-28 | 2017-05-31 | 湖南泵阀制造有限公司 | Two-way self sealing valve |
| CN209839196U (en) * | 2019-05-06 | 2019-12-24 | 秦皇岛中青冶金阀门有限公司 | Full-floating double-seal high-temperature gate valve |
-
2019
- 2019-05-06 CN CN201910369956.1A patent/CN110107703B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685672Y (en) * | 2003-11-21 | 2005-03-16 | 林德宽 | Gate valve with adjustable combined spool |
| CN101915318A (en) * | 2010-08-09 | 2010-12-15 | 上海启会机电科技有限公司 | Wedge block jacking valve |
| CN202493705U (en) * | 2012-03-12 | 2012-10-17 | 湖南泵阀制造有限公司 | Bidirectional hard seal track spiral cone valve |
| CN103161969A (en) * | 2013-03-26 | 2013-06-19 | 山东鲁临阀门有限公司 | Floating sealing environment-friendly push-and-pull valve |
| CN204201139U (en) * | 2014-10-31 | 2015-03-11 | 天胜阀门集团有限公司 | A kind of plate valve of sealing surface separate mobile |
| CN204852399U (en) * | 2015-07-24 | 2015-12-09 | 伊马莱富（北京）制药系统有限公司 | Freeze -drying sampling device's isolation valve |
| DE102015010782A1 (en) * | 2015-08-20 | 2017-02-23 | Murrplastik Produktionstechnik Gmbh | Valve |
| CN105351604A (en) * | 2015-11-27 | 2016-02-24 | 四川九天真空科技股份有限公司 | Opening structure and opening method of valve under large pressure difference |
| CN106764008A (en) * | 2016-12-28 | 2017-05-31 | 湖南泵阀制造有限公司 | Two-way self sealing valve |
| CN209839196U (en) * | 2019-05-06 | 2019-12-24 | 秦皇岛中青冶金阀门有限公司 | Full-floating double-seal high-temperature gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110107703A (en) | 2019-08-09 |
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