CN113074263A - Improved double-sealing high-temperature high-pressure elastic ball valve - Google Patents
Improved double-sealing high-temperature high-pressure elastic ball valve Download PDFInfo
- Publication number
- CN113074263A CN113074263A CN202110329206.9A CN202110329206A CN113074263A CN 113074263 A CN113074263 A CN 113074263A CN 202110329206 A CN202110329206 A CN 202110329206A CN 113074263 A CN113074263 A CN 113074263A
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- China
- Prior art keywords
- fixedly connected
- ball
- valve body
- valve
- rod
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 238000001914 filtration Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The invention discloses an improved double-sealing high-temperature high-pressure elastic ball valve which comprises a valve body, wherein an operating rod is arranged at the top of the valve body, a valve rod is fixedly connected to the bottom of the operating rod, the bottom of the valve rod penetrates through an inner cavity of the valve body and is fixedly connected with a ball body, the bottom of the ball body is movably connected with the valve body, and first sealing rings are arranged on two sides of the ball body. The improved double-sealing high-temperature high-pressure elastic ball valve has the advantages of good sealing effect and non-return function and filtering function.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to an improved double-sealing high-temperature high-pressure elastic ball valve.
Background
The ball valve is exactly that the opening and closing piece is driven by the valve rod, and the valve of rotary motion is made to the duplex winding ball valve axis, the regulation and the control that also can be used to the fluid, there is not elastic construction design between the disk seat of current high temperature high pressure elasticity ball valve and the spheroid, there is not elasticity between disk seat and the spheroid of messenger, thereby lead to disk seat and the contact that the spheroid can not be fine, produce easily and leak, when a sealing washer goes wrong, the medium just can also produce and leak, current high temperature high pressure elasticity ball valve does not have non return function and filtering capability simultaneously, can not filter impurity, also can not prevent the medium backward flow.
Disclosure of Invention
The invention aims to provide an improved double-sealing high-temperature high-pressure elastic ball valve which has the advantages of good sealing effect, non-return function and filtering function, and solves the problems that the existing high-temperature high-pressure elastic ball valve is poor in sealing effect and does not have the non-return function and the filtering function.
In order to achieve the purpose, the invention provides the following technical scheme: an improved double-sealing high-temperature high-pressure elastic ball valve comprises a valve body, wherein an operating rod is arranged at the top of the valve body, a valve rod is fixedly connected to the bottom of the operating rod, the bottom of the valve rod penetrates through an inner cavity of the valve body and is fixedly connected with a ball body, the bottom of the ball body is movably connected with the valve body, first sealing rings are arranged on two sides of the ball body, limiting boxes are fixedly connected to the top and the bottom of the inner cavity of the valve body and are positioned on two sides of the ball body, a first spring is arranged in the inner cavity of each limiting box, a limiting block is fixedly connected to one side, close to the ball body, of the first spring, a limiting rod is fixedly connected to one side, close to the ball body, one end, close to the ball body, of each limiting rod penetrates through the limiting boxes and is fixedly connected with the first sealing rings, second sealing rings are sleeved, the inner cavity of the groove is provided with a second spring, one side of the second spring close to the ball body is fixedly connected with a pressing plate, one side of the second sealing ring far away from the ball body extends to the inner cavity of the groove and is fixedly connected with the pressing plate, the left side of the inner cavity of the valve body is provided with a filter plate, the left side of the filter plate is fixedly connected with a rotary rod, the left side of the rotary rod is fixedly connected with a handle, the right side of the inner cavity of the valve body is provided with a fixing box, the top and the bottom of the fixing box are fixedly connected with a bracket, the opposite ends of the two brackets are fixedly connected with the inner wall of the valve body, the right side of the inner cavity of the fixing box is fixedly connected with a third spring, the left side of the third spring is fixedly connected with a push plate, the top and the bottom of, the left side of baffle is provided with the fixed plate, the surface of fixed plate and the inner wall fixed connection of valve body, the through-hole has been seted up to one side of fixed plate.
Preferably, the two ends of the valve body are both sleeved with connecting flanges, and one side of each connecting flange is provided with a mounting hole.
Preferably, one side of the first sealing ring is in contact with the ball, and the surface of the second sealing ring is in contact with the ball.
Preferably, the joint of the bottom of the ball body and the valve body is movably connected through a rotating shaft, and the joint of the surface of the valve rod and the valve body is movably connected through a bearing.
Preferably, the surface cover of gag lever post is equipped with first waterproof sealing washer, and one side and spacing box fixed connection of first waterproof sealing washer, the surface cover of push rod is equipped with the waterproof sealing washer of second, and one side and the fixed box fixed connection of the waterproof sealing washer of second.
Preferably, the inner cavity of the through hole is provided with a sealing plug, and the right side of the sealing plug is fixedly connected with the baffle.
Preferably, the surface of the filter plate is connected with the valve body through threads, and the left side of the baffle plate is in contact with the fixing plate.
Compared with the prior art, the invention has the following beneficial effects:
1. the improved double-sealing high-temperature and high-pressure elastic ball valve has the advantages of good sealing effect, non-return function and filtering function, and is worthy of popularization.
2. The valve rod can be conveniently rotated by a user through the arrangement of the operating rod, the sealing effect can be realized through the arrangement of the first sealing ring and the second sealing ring, the first sealing ring and the second sealing ring can be ensured to be tightly attached to the ball body through the arrangement of the first spring and the second spring, the rotating rod can be conveniently rotated by the user through the arrangement of the handle, the through hole can be sealed through the arrangement of the baffle plate and the sealing plug, the installation of the valve body can be facilitated through the arrangement of the connecting flange and the mounting hole, the rotation of the ball body can be facilitated through the arrangement of the rotating shaft, the rotation of the valve rod can be facilitated through the arrangement of the bearing, a medium can be prevented from entering the limiting box and the fixing box through the arrangement of the first waterproof sealing ring and the second waterproof sealing ring, and the installation and.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a partial enlarged view of B in FIG. 1 according to the present invention.
In the figure: 1. a valve body; 2. an operating lever; 3. a valve stem; 4. a sphere; 5. a first seal ring; 6. a limiting box; 7. a first spring; 8. a limiting block; 9. a limiting rod; 10. a second seal ring; 11. a groove; 12. a second spring; 13. pressing a plate; 14. filtering the plate; 15. rotating the rod; 16. a grip; 17. a fixing box; 18. a support; 19. a third spring; 20. pushing the plate; 21. a push rod; 22. a baffle plate; 23. a fixing plate; 24. a through hole; 25. a connecting flange; 26. mounting holes; 27. and (4) sealing the plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, 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," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, an improved double-sealing high-temperature high-pressure elastic ball valve comprises a valve body 1, an operating rod 2 is arranged at the top of the valve body 1, a valve rod 3 is fixedly connected to the bottom of the operating rod 2, the bottom of the valve rod 3 penetrates through the inner cavity of the valve body 1 and is fixedly connected with a ball 4, the bottom of the ball 4 is movably connected with the valve body 1, first sealing rings 5 are arranged on both sides of the ball 4, limiting boxes 6 are fixedly connected to the top and the bottom of the inner cavity of the valve body 1 and are positioned on both sides of the ball 4, a first spring 7 is arranged in the inner cavity of the limiting box 6, a limiting block 8 is fixedly connected to one side of the first spring 7, which is close to the ball 4, a limiting rod 9 is fixedly connected to one side of the limiting block 8, which is close to the ball 4, one end of the limiting rod 9, which is close, the inner wall of the valve body 1 and the two sides at the top and the bottom of the ball 4 are both provided with grooves 11, the inner cavity of each groove 11 is provided with a second spring 12, one side of each second spring 12 close to the ball 4 is fixedly connected with a pressing plate 13, one side of each second sealing ring 10 far away from the ball 4 extends into the inner cavity of each groove 11 and is fixedly connected with the pressing plate 13, the left side of the inner cavity of the valve body 1 is provided with a filter plate 14, the left side of each filter plate 14 is fixedly connected with a rotary rod 15, the left side of each rotary rod 15 is fixedly connected with a handle 16, the right side of the inner cavity of the valve body 1 is provided with a fixing box 17, the top and the bottom of each fixing box 17 are both fixedly connected with brackets 18, the opposite ends of the two brackets 18 are both fixedly connected with the inner wall of the valve body 1, the right side of the, the left end of the push rods 21 penetrates through the left side of the fixing box 17, the left sides of the two push rods 21 are fixedly connected with a baffle 22, the left side of the baffle 22 is provided with a fixing plate 23, the surface of the fixing plate 23 is fixedly connected with the inner wall of the valve body 1, one side of the fixing plate 23 is provided with a through hole 24, two ends of the valve body 1 are both sleeved with a connecting flange 25, one side of the connecting flange 25 is provided with a mounting hole 26, one side of a first sealing ring 5 is contacted with the ball 4, the surface of a second sealing ring 10 is contacted with the ball 4, the joint of the bottom of the ball 4 and the valve body 1 is movably connected through a rotating shaft, the joint of the surface of the valve rod 3 and the valve body 1 is movably connected through a bearing, the surface of the limiting rod 9 is sleeved with a first waterproof sealing ring, one side of the first waterproof sealing ring is fixedly connected with the limiting box 6, the inner cavity of the through hole 24 is provided with a sealing plug 27, the right side of the sealing plug 27 is fixedly connected with a baffle 22, the joint of the surface of the filter plate 14 and the valve body 1 is connected through threads, the left side of the baffle 22 is contacted with a fixing plate 23, the valve rod 3 can be rotated by a user conveniently by arranging an operating rod 2, the sealing effect can be realized by arranging a first sealing ring 5 and a second sealing ring 10, the first sealing ring 5 and the second sealing ring 10 can be ensured to be tightly attached to the ball 4 by arranging a first spring 7 and a second spring 12, the rotating rod 15 can be rotated by a user conveniently by arranging a handle 16, the through hole 24 can be sealed by arranging the baffle 22 and the sealing plug 27, the installation of the valve body 1 can be facilitated by arranging a rotating shaft, the rotation of the ball 4 can be facilitated by arranging a bearing, the rotation of the valve rod 3 can be facilitated, by arranging the first waterproof sealing ring and the second waterproof sealing ring, the medium can be prevented from entering the limiting box 6 and the fixing box 17, the installation and the disassembly of the filter plate 14 can be convenient by arranging the thread, the problems of poor sealing effect and no check function and filtering function of the existing high-temperature high-pressure elastic ball valve are solved by arranging the valve body 1, the operating rod 2, the valve rod 3, the ball body 4, the first sealing ring 5, the limiting box 6, the first spring 7, the limiting block 8, the limiting rod 9, the second sealing ring 10, the groove 11, the second spring 12, the pressing plate 13, the filter plate 14, the rotating rod 15, the handle 16, the fixing box 17, the bracket 18, the third spring 19, the push plate 20, the push rod 21, the baffle 22, the fixing plate 23 and the through hole 24, this improved generation double seal high temperature high pressure elasticity ball valve possesses sealed effectual and possess non return function and filtering capability's advantage, is worth promoting.
When the device is used, the first spring 7 can drive the first sealing ring 5 to be tightly attached to the ball body 4 through the matching of the limiting block 8 and the limiting rod 9, the second spring 12 can drive the second sealing ring 10 to be tightly attached to the ball body 4 through the matching of the pressing plate 13, double sealing is realized through the matching of the first sealing ring 5 and the second sealing ring 10, the sealing effect is improved, the filter plate 14 can play a role of filtering, the filter plate 14 can be rotated through the matching of the handle 16 and the rotating rod 15, the filter plate 14 is convenient to disassemble, a medium can enter the through hole 24 to extrude the sealing plug 27 and the baffle plate 22 when the valve body 1 is opened, the baffle plate 22 is driven to move rightwards to remove the sealing of the through hole 24, the baffle plate 22 drives the push plate 20 to extrude the third spring 19 through the matching of the push rod 21, when the medium flows backwards, the third spring 19 resets to drive the baffle plate 22 to move left, the baffle 22 closes the through hole 24 to prevent backflow.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an improved generation double seal high temperature high pressure elasticity ball valve, includes valve body (1), its characterized in that: the top of the valve body (1) is provided with an operating rod (2), the bottom of the operating rod (2) is fixedly connected with a valve rod (3), the bottom of the valve rod (3) penetrates through the inner cavity of the valve body (1) and is fixedly connected with a ball body (4), the bottom of the ball body (4) is movably connected with the valve body (1), two sides of the ball body (4) are respectively provided with a first sealing ring (5), the top and the bottom of the inner cavity of the valve body (1) are respectively and fixedly connected with a limiting box (6) at two sides of the ball body (4), the inner cavity of the limiting box (6) is provided with a first spring (7), one side of the first spring (7) close to the ball body (4) is fixedly connected with a limiting block (8), one side of the limiting block (8) close to the ball body (4) is fixedly connected with a limiting rod (9), one end of the limiting rod (9) close to the ball body (4) penetrates through the limiting, the top and the bottom of the ball body (4) are both sleeved with second sealing rings (10), grooves (11) are formed in the inner wall of the valve body (1) and in the two sides of the top and the bottom of the ball body (4), a second spring (12) is arranged in an inner cavity of each groove (11), a pressing plate (13) is fixedly connected to one side, close to the ball body (4), of each second spring (12), one side, far away from the ball body (4), of each second sealing ring (10) extends to the inner cavity of each groove (11) and is fixedly connected with the pressing plate (13), a filter plate (14) is arranged on the left side of the inner cavity of the valve body (1), a rotary rod (15) is fixedly connected to the left side of the filter plate (14), a handle (16) is fixedly connected to the left side of the rotary rod (15), a fixing box (17) is arranged on the right side of the inner cavity of the valve body, the inner wall fixed connection of the one end that two supports (18) are opposite all with valve body (1), the right side fixedly connected with third spring (19) of fixed box (17) inner chamber, the left side fixedly connected with push pedal (20) of third spring (19), the equal fixedly connected with push rod (21) in left top and bottom of push pedal (20), the left end of push rod (21) runs through to the left side of fixed box (17), the left side fixedly connected with baffle (22) of two push rods (21), the left side of baffle (22) is provided with fixed plate (23), the surface of fixed plate (23) and the inner wall fixed connection of valve body (1), through-hole (24) have been seted up to one side of fixed plate (23).
2. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: both ends of the valve body (1) are respectively sleeved with a connecting flange (25), and one side of each connecting flange (25) is provided with a mounting hole (26).
3. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: one side of the first sealing ring (5) is in contact with the ball body (4), and the surface of the second sealing ring (10) is in contact with the ball body (4).
4. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: the bottom of the ball body (4) is movably connected with the joint of the valve body (1) through a rotating shaft, and the surface of the valve rod (3) is movably connected with the joint of the valve body (1) through a bearing.
5. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: the utility model discloses a waterproof sealing device, including gag lever post (9), stopper box (6), push rod (21), the surface cover of gag lever post (9) is equipped with first waterproof sealing washer, and one side and spacing box (17) fixed connection of first waterproof sealing washer, the surface cover of push rod (21) is equipped with the waterproof sealing washer of second, and one side and the fixed box (17) fixed connection of the waterproof sealing washer of second.
6. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: the inner cavity of the through hole (24) is provided with a sealing plug (27), and the right side of the sealing plug (27) is fixedly connected with the baffle (22).
7. An improved double seal high temperature high pressure elastic ball valve according to claim 1, characterized in that: the surface of the filter plate (14) is connected with the joint of the valve body (1) through threads, and the left side of the baffle plate (22) is in contact with the fixing plate (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329206.9A CN113074263A (en) | 2021-03-27 | 2021-03-27 | Improved double-sealing high-temperature high-pressure elastic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110329206.9A CN113074263A (en) | 2021-03-27 | 2021-03-27 | Improved double-sealing high-temperature high-pressure elastic ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113074263A true CN113074263A (en) | 2021-07-06 |
Family
ID=76610911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110329206.9A Pending CN113074263A (en) | 2021-03-27 | 2021-03-27 | Improved double-sealing high-temperature high-pressure elastic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113074263A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911408A (en) * | 1989-01-03 | 1990-03-27 | Kemp Development Corporation | Seat assembly for ball valves |
| CN108317269A (en) * | 2018-03-19 | 2018-07-24 | 云和漫行者玩具有限公司 | A kind of low temperature resistant fixing ball valve |
| CN208457254U (en) * | 2018-07-13 | 2019-02-01 | 天特阀门制造（天津）有限公司 | A kind of soft seal fixing ball valve |
| CN210050315U (en) * | 2019-04-01 | 2020-02-11 | 浙江巨马泵阀有限公司 | Online blowoff valve of ground heating pipeline |
| CN212155931U (en) * | 2020-05-18 | 2020-12-15 | 辽宁泰通阀业集团有限公司 | Novel ball valve |
-
2021
- 2021-03-27 CN CN202110329206.9A patent/CN113074263A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911408A (en) * | 1989-01-03 | 1990-03-27 | Kemp Development Corporation | Seat assembly for ball valves |
| CN108317269A (en) * | 2018-03-19 | 2018-07-24 | 云和漫行者玩具有限公司 | A kind of low temperature resistant fixing ball valve |
| CN208457254U (en) * | 2018-07-13 | 2019-02-01 | 天特阀门制造（天津）有限公司 | A kind of soft seal fixing ball valve |
| CN210050315U (en) * | 2019-04-01 | 2020-02-11 | 浙江巨马泵阀有限公司 | Online blowoff valve of ground heating pipeline |
| CN212155931U (en) * | 2020-05-18 | 2020-12-15 | 辽宁泰通阀业集团有限公司 | Novel ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210706 |