CN209839196U - Full-floating double-seal high-temperature gate valve - Google Patents
Full-floating double-seal high-temperature gate valve Download PDFInfo
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- CN209839196U CN209839196U CN201920631581.7U CN201920631581U CN209839196U CN 209839196 U CN209839196 U CN 209839196U CN 201920631581 U CN201920631581 U CN 201920631581U CN 209839196 U CN209839196 U CN 209839196U
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Abstract
A full-floating double-sealing high-temperature gate valve. The problem that current push-pull valve is sealed poor, the life-span is low is mainly solved. The method is characterized in that: the valve plate is provided with a floating mechanism for driving the valve plate to float transversely; the valve body is provided with a sealing surface which can be matched with the valve plate in a sealing way, the valve body on 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 the transverse distance between the sealing surface and the valve plate. The valve has the advantages that 1, a first layer of seal is formed by the sealing surface and the valve plate, and a second layer of seal is formed by the elastic sealing ring and the valve plate, so that double-layer seal is realized, and seal is ensured; 2. elastic sealing ring sets up in first sealed face outer lane, avoids contacting with the medium stream, and no wearing and tearing do not have the deformation, and the valve plate floats simultaneously and sets up, at the in-process of opening and close, and elastic sealing ring can push the valve plate open, avoids the wearing and tearing of valve plate and sealed face, when guaranteeing to seal, can its life greatly increased.
Description
Technical Field
The utility model relates to a push-pull valve, concretely relates to double containment high temperature push-pull valve floats entirely.
Background
The gate valve is widely adopted by material and gas pipelines of enterprises such as steel, mines, coking and the like due to light weight, simple installation and wide application range.
Along with the performance requirement of each system ability to the picture peg valve also more and more high, especially to its high temperature resistance ability, sealing performance, requirement of stability is strict day by day, and the picture peg valve in the past can not be used or life is very short because of the structure is too simple, and is sealed poor, and intensity is low at high temperature, the strong operating mode of leakproofness.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of background art, the utility model provides a full floating double containment high temperature push-pull valve solves the problem that current push-pull valve is sealed poor, life is low.
The utility model discloses the technical scheme who adopts: a full-floating double-sealing 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 float transversely; the valve body is provided with a sealing surface which can be matched with the valve plate in a sealing mode, an annular concave groove is formed in the valve body on the outer ring of the sealing surface, 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 the transverse distance between the sealing surface and the valve plate.
The floating mechanism is arranged on the other end face 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 two side walls of the lifting nut are provided with guide blocks; the nut positioning seat is fixedly arranged in the middle of the upper side of the valve plate, an installation groove matched with the lifting nut is formed in the nut positioning seat, first guide grooves which are obliquely arranged are formed in two side walls of the installation groove, the lifting nut is arranged in the installation groove, and the guide block is in sliding fit with the first guide grooves; the positioning supports are arranged on two sides of the valve plate and provided with a plurality of second guide grooves which are obliquely arranged, and the bottom edges of the positioning supports are lower than the bottom edges of the valve plate; the vertical plate is arranged on the edges of the two sides of the valve plate, and a positioning pin hole corresponding to the second guide groove is formed in the vertical plate; the sliding pin penetrates through the second guide groove and the positioning pin hole to be arranged to connect the vertical plate 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.
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, an outer ring of the elastic sealing ring is welded with the valve body, and an inner ring of the elastic sealing ring is obliquely arranged towards the valve plate.
The elastic sealing ring inner ring is bent and arranged and comprises a sealing portion sealed with the valve plate, a contact portion capable of abutting against the valve body, and a connecting portion for connecting the sealing portion and the contact portion, wherein the cross 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 utility model has the advantages that: 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, avoids contacting with medium flow, is free from abrasion and deformation, and is matched with the floating arrangement of the valve plate, so that the valve plate pushes away the valve plate to avoid the contact abrasion of the valve plate and the sealing surface in the opening and closing process, the abrasion problem of the sealing surface, the elastic sealing element and the valve plate is very little, and the service life of the elastic sealing ring can be greatly prolonged while the sealing is ensured.
Drawings
Fig. 1 is a schematic structural diagram 1 of a full-floating dual-seal high-temperature gate valve according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram 2 of a full-floating dual-seal high-temperature gate valve according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram 3 of a full-floating dual-seal high-temperature gate valve according to an embodiment of the present invention.
Fig. 4 is an enlarged schematic view of a portion a of fig. 3.
Fig. 5 is a schematic structural diagram 1 of the valve plate and the lifting mechanism according to the embodiment of the present invention.
Fig. 6 is a schematic structural diagram 2 of the valve plate and the lifting mechanism according to the embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a valve plate according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of the lifting nut seat according to the embodiment of the present invention.
Fig. 9 is a schematic structural diagram 1 of a lifting nut according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram 2 of a lifting nut according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a positioning support according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
as shown in the figure, a full floating double-sealing high-temperature gate valve, includes valve body 1, valve plate 2, valve rod 3, valve plate 2 inserts in the valve body 1, valve plate 2 is connected with valve rod 3, valve rod 3 is connected with the operation hand wheel, be formed with two vertical slide rails 13 of arranging in the valve body 1, valve plate 2 sets up between two slide rails 13, under the drive of valve rod 3, can follow the slide from top to bottom of valve body 1.
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 the valve plate 2 has certain offset between the opening state and the closing state.
The valve body 1 is provided with a sealing surface 11 which can be matched with the valve plate 2 in a sealing mode, an annular concave groove 12 is formed in 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.
Wherein, valve body 1 adopts the whole welding forming of Q345B steel, valve plate 2 all adopts SUS304 stainless steel material to make with elastic sealing ring 4, and thermal stability is good, and structurally can realize the high temperature deformation compensation, can normally work below 450 ℃, can adapt to high temperature operating mode well, guarantees sealed moreover.
The full-floating double-sealing high-temperature gate valve adopting the structure has the advantages that the first layer of sealing is formed between the sealing surface 11 of the valve body 1 and the valve plate 2, and the second layer of sealing is formed between the elastic sealing ring 4 and the valve plate 2, so that double-layer sealing 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 in sealed face 11 outer lane, and set up and form in annular depressed groove 12 on valve body 1, when the valve is closed, elastic sealing ring 4 can avoid the direct contact with the medium stream, consequently, guaranteed that elastic sealing ring 4's non-wearing does not have the deformation, cooperate the horizontal floating setting of valve plate 2 simultaneously, make valve plate 2 at the in-process of opening and close, elastic sealing ring 4 can push valve plate 2 open, avoid valve plate 2 at the in-process of opening and close and seal face 11's direct contact wearing and tearing, avoid sealed face 11's wearing and tearing, consequently, sealed face 11, elastic sealing ring 4, the wearing and tearing problem of valve plate 2 is all few, when guaranteeing to seal, can its life greatly increased.
As shown in the figure, the floating mechanism is arranged on the other end face 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.
A threaded hole 51 is longitudinally formed in the center of the lifting nut 5, 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 in the middle of the upper side of the valve plate 2, an installation groove 61 matched with the lifting nut 5 is arranged on the nut positioning seat 6, first guide grooves 62 which are obliquely arranged are arranged on two side walls of the installation groove 61, the lifting nut 5 is arranged in the installation groove 61, and the guide block 52 is 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 that of the valve plate 2; the vertical plate 8 is arranged on the two side edges of the valve plate 2, and the vertical plate 8 is provided with a positioning pin hole 81 corresponding to the second guide groove 71; 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.
When the valve is closed, the valve rod 3 is rotated by a hand wheel, the valve rod 3 is matched with the lifting nut 5 to drive the valve plate 2 to move downwards, the positioning support 7 firstly touches the bottom and stops moving downwards in the closing process, and the valve rod 3 is driven to continue moving downwards when continuing to rotate, at the moment, the valve plate 2 is transversely slid along the second guide groove 71 and pushed to the sealing surface 11 under the action of the second guide groove 71 and the sliding pin 9 on the positioning support 7, meanwhile, the lifting nut 5 is also arranged in the mounting groove of the nut positioning seat 6, the valve plate 2 is pushed to the sealing surface under 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 original axial center position, and meanwhile, the valve plate is sequentially attached to the elastic sealing ring 4 and the sealing surface 11, so that bidirectional sealing is.
When opening the valve, through the hand wheel reverse rotation valve rod, valve rod 3 drives valve plate 2 upward movement through cooperating with lifting nut 5, and at the opening in-process, the valve plate can break away from with sealed face 11 rapidly under the effect of elastic sealing element 4, avoids taking place frictional wear with sealed face 11.
In addition, the nut positioning seat 6 is fastened and connected on the valve plate 2 through a bolt, 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 of the valve is guaranteed, and the valve is simple in structure and convenient to install.
The elastic sealing ring 4 is welded with the valve body 1 through an outer ring of the elastic sealing ring, and an inner ring of the elastic sealing ring is obliquely arranged towards the valve plate 2 to form the elastic performance of the elastic sealing ring.
The inner ring of the elastic sealing ring 4 is bent and arranged, and 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 connecting the sealing part 41 and the contact part 42, wherein the cross 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 is in contact with the end surface of the annular concave groove 12 of the valve body 1 and is mutually abutted and pressed, so that the contact sealing is ensured.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (7)
1. A full-floating double-sealing 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 plate (2) is connected with the valve rod (3) 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 also provided with a floating mechanism for driving the valve plate (2) to float transversely; the sealing structure is characterized in that 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) of 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).
2. The full floating dual seal high temperature gate valve according to claim 1, wherein: the floating mechanism is arranged on the other end face, opposite to the sealing face (11), of the valve plate (2) and comprises a lifting nut (5), a nut positioning seat (6), a positioning support (7), a vertical plate (8) and a sliding pin (9);
a threaded hole (51) is longitudinally formed in the center of the lifting nut (5), 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 in the middle of the upper side of the valve plate (2), an installation groove (61) matched with the lifting nut (5) is formed in the nut positioning seat (6), first guide grooves (62) which are obliquely arranged are formed in two side walls of the installation groove (61), the lifting nut (5) is arranged in the installation groove (61), and the guide block (52) is in sliding fit with the first guide grooves (62);
the positioning supports (7) are arranged on two sides of the valve plate (2), the positioning supports (7) are provided with a plurality of second guide grooves (71) which are obliquely arranged, and the bottom edges of the positioning supports (7) are lower than the bottom edges of the valve plate (2);
the vertical plate (8) is arranged on the two side edges of the valve plate (2), and a positioning pin hole (81) corresponding to the second guide groove (71) is formed in the vertical plate (8);
the sliding pin (9) penetrates through the second guide groove (71) and the positioning pin hole (81) to connect the vertical plate (8) and the positioning support (7).
3. The full floating dual seal high temperature gate valve according to claim 2, 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).
4. The full floating dual seal high temperature gate valve according to claim 1, wherein: the valve body (1) is integrally formed by welding metal steel.
5. The full floating dual seal high temperature gate valve according to 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).
6. The full floating dual seal high temperature gate valve according to claim 5, wherein: elastic sealing ring (4) inner circle forms the setting of buckling, includes sealing portion (41) sealed with valve plate (2), contact site (42) that can contradict with valve body (1), the connecting portion of connecting sealing portion (41) and contact site (42), the cross-section of elastic sealing ring (4) is "J" type structure.
7. The full floating dual seal high temperature gate valve according to claim 1, wherein: the valve plate (2) is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920631581.7U CN209839196U (en) | 2019-05-06 | 2019-05-06 | Full-floating double-seal high-temperature gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920631581.7U CN209839196U (en) | 2019-05-06 | 2019-05-06 | Full-floating double-seal high-temperature gate valve |
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| Publication Number | Publication Date |
|---|---|
| CN209839196U true CN209839196U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920631581.7U Active CN209839196U (en) | 2019-05-06 | 2019-05-06 | Full-floating double-seal high-temperature gate valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107703A (en) * | 2019-05-06 | 2019-08-09 | 秦皇岛中青冶金阀门有限公司 | A kind of full floating double containment high temperature gate valve |
| CN110107703B (en) * | 2019-05-06 | 2024-05-24 | 秦皇岛中青冶金阀门有限公司 | Full-floating double-sealing high-temperature gate valve |
-
2019
- 2019-05-06 CN CN201920631581.7U patent/CN209839196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107703A (en) * | 2019-05-06 | 2019-08-09 | 秦皇岛中青冶金阀门有限公司 | A kind of full floating double containment high temperature gate valve |
| CN110107703B (en) * | 2019-05-06 | 2024-05-24 | 秦皇岛中青冶金阀门有限公司 | Full-floating double-sealing high-temperature gate valve |
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