CN110778737A - Multi-sealing surface fluorine lining ball valve - Google Patents
Multi-sealing surface fluorine lining ball valve Download PDFInfo
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- CN110778737A CN110778737A CN201910982491.7A CN201910982491A CN110778737A CN 110778737 A CN110778737 A CN 110778737A CN 201910982491 A CN201910982491 A CN 201910982491A CN 110778737 A CN110778737 A CN 110778737A
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- lining
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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
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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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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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
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a multi-sealing surface fluorine-lined ball valve which comprises a main valve body, an auxiliary valve body, a valve rod and a valve ball, wherein a main valve seat is arranged in the main valve body, a first fluorine lining layer is arranged on the inner wall of the main valve body, a second fluorine lining layer is arranged on the inner wall of the auxiliary valve body, a third fluorine lining layer is arranged on the outer wall of the valve rod, a fourth fluorine lining layer is arranged on the outer wall of the valve ball, sealing filler is arranged between the third fluorine lining layer and the first fluorine lining layer, a sealing convex ring surrounding the circle center of the valve rod is arranged on the third fluorine lining layer, a sealing ring groove surrounding the circle center of the valve rod is arranged at the position of the sealing filler corresponding to the sealing convex ring, the sealing convex ring and the sealing filler are in sealing fit to form a first sealing surface and a second sealing surface which are respectively positioned at. The invention has the following advantages and effects: according to the invention, a better sealing effect is achieved between the valve rod and the main valve body in a five-way sealing mode, and the friction resistance of the valve rod during rotation is reduced.
Description
Technical Field
The invention relates to a valve, in particular to a multi-sealing surface fluorine-lined ball valve.
Background
The ball valve is structurally characterized in that a ball body with a circular through hole is used as an opening and closing piece, and the ball body rotates around the center line of a valve body along with a valve rod to realize the opening and closing of the valve. The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment. According to the structural advantages of the ball valve, the ball valve can be widely applied to pipeline systems of petroleum, chemical engineering and the like. In the fields of heavy chemical industry, large chemical fertilizer, petrochemical industry, steel smelting and the like for conveying corrosive fluid media, the metal valves can be corroded and obviously cannot be used, so that the corrosion-resistant plastic fluorine-lined valves are usually required in the fields.
The existing fluorine-lined ball valve comprises a main valve body, an auxiliary valve body arranged on the main valve body, a valve rod arranged on the main valve body and a valve ball arranged in the main valve body and driven by the valve rod, wherein a valve seat matched with the valve ball to realize sealing is arranged in the main valve body, a first fluorine-lined layer is arranged on the inner wall of the main valve body, a second fluorine-lined layer is arranged on the inner wall of the auxiliary valve body, a third fluorine-lined layer is arranged on the outer walls of the valve rod and the valve ball, and a sealing filler is arranged between the third fluorine-lined layer located at the position of the valve.
Because the contact area between the third fluorine lining layer and the sealing filler is large, and the third fluorine lining layer and the sealing filler are influenced by the material characteristics of the third fluorine lining layer and the sealing filler, large frictional resistance exists between the third fluorine lining layer and the sealing filler, and the valve rod can be subjected to large frictional resistance in the rotating process, so that the opening and closing operation of the fluorine-lined ball valve is inconvenient. And the larger frictional resistance can increase the abrasion between the third fluorine lining layer and the sealing filler, and the sealing property between the valve rod and the main valve body can be influenced in the past, and finally the fluorine lining ball valve is leaked.
Disclosure of Invention
The invention aims to provide a multi-sealing surface fluorine-lined ball valve which can achieve a better sealing effect between a valve rod and a main valve body and reduce frictional resistance applied to the valve rod during rotation, so that the valve can be opened and closed conveniently.
The technical purpose of the invention is realized by the following technical scheme: a multi-sealing surface fluorine-lined ball valve comprises a main valve body, an auxiliary valve body arranged on the main valve body, a valve rod arranged on the main valve body, and a valve ball which is arranged in the main valve body and driven by the valve rod, wherein a main valve seat matched with the valve ball to realize sealing is arranged in the main valve body, a first fluorine lining layer is arranged on the inner wall of the main valve body, a second fluorine lining layer is arranged on the inner wall of the auxiliary valve body, a third fluorine lining layer is arranged on the outer wall of the valve rod, a fourth fluorine lining layer is arranged on the outer wall of the valve ball, sealing filler is arranged between the third fluorine lining layer and the first fluorine lining layer, a gap is formed between the third fluorine lining layer and the sealing filler, a sealing convex ring surrounding the circle center of the valve rod is arranged on one surface of the third fluorine lining layer facing the gap, a sealing ring groove surrounding the circle center of the valve rod is arranged on the position of the sealing filler corresponding to the sealing convex ring, and the sealing filler are in sealing fit, and a first sealing lubricant layer is filled in the sealing ring groove.
By adopting the technical scheme, the contact area between the third fluorine lining layer and the sealing filler is reduced by matching the sealing convex ring and the sealing filler, so that the aim of reducing the friction resistance is fulfilled. The first sealing surface and the second sealing surface are formed by sealing and matching the sealing convex ring and the sealing filler, so that double sealing is realized; and the first sealing surface and the second sealing surface which are positioned on two sides of the sealing ring groove enable the first sealing lubricant positioned in the sealing ring groove not to leak, and then a liquid seal is formed between the sealing convex ring and the sealing filler through the first sealing lubricant positioned in the sealing ring groove. Through the cooperation between the three seals for can reach better sealed effect and reduce the frictional resistance that receives when the valve rod rotates between valve rod and the main valve body, realize the convenient of valve rod and open and close. And the first sealing lubricant can lubricate the sealing convex ring, so that the friction resistance in the rotating process is further reduced.
Further setting the following steps: and a sealing ring is arranged between the third fluorine lining layer and the sealing filler, and the peripheral wall of the sealing convex ring is an arc-shaped surface protruding outwards.
By adopting the technical scheme, the fourth sealing is realized by the arrangement of the sealing ring, so that a better sealing effect is achieved; and the sealing convex ring and the sealing filler are better abutted and sealed through the arrangement of the arc-shaped surface, so that a better sealing effect is achieved.
Further setting the following steps: and a second sealing lubricant layer is filled in the gap between the sealing ring and the sealing convex ring.
By adopting the technical scheme, the second sealing lubricant is arranged between the third fluorine lining layer and the sealing filler to realize the fifth liquid seal, so that a better sealing effect is achieved; and the cooperation among the sealing washer, the protruding ring of sealed and the sealing filler can prevent that second sealed emollient from taking place to leak to ensure the stability of fifth way liquid seal.
Further setting the following steps: and a packing gland is arranged above the sealing packing, a locking part for driving the packing gland to move towards the sealing packing is arranged between the packing gland and the main valve body, a pressing sleeve driven by the packing gland is arranged between the packing gland and the sealing packing, and the packing gland drives the sealing packing to abut against the first fluorine lining layer and the third fluorine lining layer through the pressing sleeve.
By adopting the technical scheme, the locking piece drives the sealing filler to abut against the first fluorine lining layer and the third fluorine lining layer through the packing gland and the pressing sleeve, the sealing grade is adjusted, and better sealing between the first fluorine lining layer and the sealing filler and between the third fluorine lining layer and the sealing filler can be realized.
Further setting the following steps: the sealing packing is provided with a slot for inserting the pressing sleeve, two side walls of the slot are gradually contracted towards the bottom of the slot inwards to form a guide inclined plane, and the pressing sleeve is provided with a guide part matched with the guide inclined plane.
Through adopting above-mentioned technical scheme, the setting up of slot makes the pressure cover can be better carry out the application of force to sealing filler to through the effect direction of the better change power of cooperation ability between guide portion and the guide inclined plane the two, make the drive sealing filler that the pressure cover can be better support tightly in first lining fluorine layer and third lining fluorine layer.
Further setting the following steps: the valve ball is characterized in that a positioning column coaxial with the valve rod is arranged at the bottom of the valve ball, and an installation groove for installing the positioning column is formed between the first fluorine lining layer and the second fluorine lining layer.
By adopting the technical scheme, the valve ball is further limited by the matching between the positioning column and the mounting groove, so that the valve ball is prevented from dropping, and the gravity center of the valve ball is reduced from moving downwards; the valve ball can not shake when being impacted by fluid, so that the stability of the valve ball structure can be improved.
Further setting the following steps: the positioning column is sleeved with a positioning sleeve, one end face of the positioning sleeve abuts against the fourth fluorine lining layer, and the other end face of the positioning sleeve abuts against the first fluorine lining layer.
Through adopting above-mentioned technical scheme, the setting of position sleeve carries out the axial spacingly to the valve ball, prevents that the valve ball from inclining from the left and right and lead to the sphere to warp and leak, comes spacing valve ball's mounting height through the position sleeve to further promote the installation accuracy of valve ball.
Further setting the following steps: the first fluorine lining layer is provided with a stepped groove for limiting the sealing filler to move towards the valve ball, and the sealing filler is provided with a stepped protrusion matched with the stepped groove.
Through adopting above-mentioned technical scheme, the cooperation between ladder groove and the protruding both of ladder restricts the excessive valve ball that moves towards of packing, prevents to take place to interfere.
Further setting the following steps: and an auxiliary valve seat matched with a valve ball to realize sealing is arranged in the auxiliary valve body, and first sealing rings are arranged at the position where the first fluorine lining layer abuts against the main valve seat and the position where the second fluorine lining layer abuts against the auxiliary valve seat.
Through adopting above-mentioned technical scheme, the cooperation between vice disk seat and the ball valve combines the cooperation between main valve seat and the ball valve to realize that the twice is sealed to promote the leakproofness of ball valve. The arrangement of the first sealing ring has a compensation effect on the fit clearance between the first sealing ring and the second sealing ring, so that better sealing is realized.
Further setting the following steps: the pressing sleeve is cylindrical.
By adopting the technical scheme, the cylindrical pressing sleeve maximizes the contact area between the pressing sleeve and the sealing filler, so that the pressing sleeve can realize stable and balanced driving on the sealing filler.
In conclusion, the invention has the following beneficial effects: according to the invention, a better sealing effect is achieved between the valve rod and the main valve body in a five-way sealing mode, and the friction resistance of the valve rod during rotation is reduced.
Drawings
FIG. 1 is a perspective view of an embodiment;
FIG. 2 is a partial exploded view of an embodiment;
FIG. 3 is a sectional view of the embodiment;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is an enlarged view of portion B of FIG. 4;
FIG. 6 is an enlarged view of portion C of FIG. 3;
fig. 7 is an enlarged view of a portion D in fig. 3.
In the figure: 1. a main valve body; 2. a sub-valve body; 3. a valve stem; 4. a valve ball; 5. a main valve seat; 6. a first fluorine-lined layer; 7. a second fluorine-lined layer; 8. a third fluorine-lined layer; 9. a fourth fluorine-lined layer; 10. sealing and filling; 11. a gap; 12. a sealing convex ring; 13. sealing the ring groove; 14. a first sealing surface; 15. a second sealing surface; 16. a first sealing lubricant layer; 17. a seal ring; 18. an arc-shaped surface; 19. a second sealing lubricant layer; 20. a packing gland; 21. a locking member; 22. pressing the sleeve; 23. a slot; 24. a guide ramp; 25. a guide section; 26. a positioning column; 27. mounting grooves; 28. a positioning sleeve; 29. a stepped groove; 30. a step protrusion; 31. a secondary valve seat; 32. a first seal ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 7, a multi-sealing surface fluorine-lined ball valve includes a main valve body 1 and an auxiliary valve body 2 fixedly disposed on the main valve body 1, a valve rod 3 penetrating into the main valve body 1 is mounted on the main valve body 1, and a valve ball 4 is integrally disposed at one end of the valve rod 3 located in the main valve body 1. A main valve seat 5 matched with the valve ball 4 to realize sealing is arranged in the main valve body 1, and an auxiliary valve seat 31 matched with the valve ball 4 to realize sealing is arranged in the auxiliary valve body 2; the inner wall of the main valve body 1 is fixedly provided with a first fluorine lining layer 6, the inner wall of the auxiliary valve body 2 is fixedly provided with a second fluorine lining layer 7, the outer wall of the valve rod 3 is fixedly provided with a third fluorine lining layer 8, the outer wall of the valve ball 4 is fixedly provided with a fourth fluorine lining layer 9, and the third fluorine lining layer 8 and the fourth fluorine lining layer 9 are integrally arranged. A sealing packing 10 is arranged between the third fluorine lining layer 8 and the first fluorine lining layer 6, a packing gland 20 is arranged above the sealing packing 10, a cylindrical pressing sleeve 22 is arranged between the packing gland 20 and the sealing packing 10, and the pressing sleeve 22 is sleeved on the valve rod 3.
The upper end surface of the packing gland 10 is provided with a circular slot 23, a pressing sleeve 22 is inserted into the slot 23, a locking piece 21 for driving the packing gland 20 to move towards the packing gland 10 is arranged between the packing gland 20 and the main valve body 1, the locking piece is a bolt, and the bolt penetrates through the packing gland 20 and is in threaded connection with the main valve body 1. The sealing packing 10 is driven to be tightly pressed against the first fluorine lining layer 6 and the third fluorine lining layer 8 through the matching between the pressing sleeve 22 and the slot 23. The bottom of the valve ball 4 is integrally provided with a positioning column 26, the positioning column 26 and the valve rod 3 are coaxially arranged, the positioning column 26 is wrapped by the fourth fluorine lining layer 9, and an installation groove 27 for installing the positioning column 26 wrapped by the fourth fluorine lining layer 9 is formed between the first fluorine lining layer 6 and the second fluorine lining layer 7. The fourth fluorine lining layer 9 is sleeved with a positioning sleeve 28 at a position corresponding to the positioning column 26, one end surface of the positioning sleeve 28 abuts against the fourth fluorine lining layer 9 at the bottom of the valve ball 4, the other end surface abuts against the first fluorine lining layer 6, and the positioning sleeve 28 is positioned in the mounting groove 27.
A gap 11 is formed between the third fluorine lining layer 8 and the sealing filler 10, a sealing convex ring 12 surrounding the center of the valve rod 3 is integrally arranged on the peripheral wall of the third fluorine lining layer 8, the peripheral wall of the sealing convex ring 12 is an arc-shaped surface 18 protruding outwards, a sealing ring groove 13 surrounding the center of the valve rod 3 is formed in the position, corresponding to the arc-shaped surface 18, of the sealing filler 10, a first sealing surface 14 and a second sealing surface 15 which are located on two sides of the sealing ring groove 13 are formed between the arc-shaped surface 18 and the sealing filler 10 in a sealing matching mode, and a first sealing lubricant layer 16 is filled in the sealing ring groove 13. The position where the first fluorine lining layer 6 abuts against the main valve seat 5 and the position where the second fluorine lining layer 7 abuts against the auxiliary valve seat 31 are both provided with first seal rings 32, the first seal rings 32 and the first fluorine lining layer 6 are integrally arranged, the first seal rings 32 and the second fluorine lining layer 7 are integrally arranged, and the first seal rings 32 are arranged at intervals along the radial direction of the main valve seat 5.
A sealing ring 17 is arranged between the third fluorine lining layer 8 and the sealing filler 10 and above the sealing convex ring 12, and a second sealing lubricant layer 19 is filled in the gap 11 and between the sealing ring 17 and the sealing convex ring 12. The two side walls of the slot 23 are gradually contracted inwards towards the bottom of the slot 23 to form a guide inclined surface 24, the end surface of the pressing sleeve 22 is integrally provided with a guide part 25 matched with the guide inclined surface 24, the first fluorine lining layer 6 is provided with a stepped groove 29 for limiting the movement of the sealing filler 10 towards the valve ball 4, and the sealing filler 10 is integrally provided with a stepped bulge 30 matched with the stepped groove 29. The first sealing lubricant layer 16 and the second sealing lubricant layer 19 may be anti-corrosion sealing lubricant paste, which is produced by Shandong Zhongxing petrochemical company, Inc., and is a prior art.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a multichannel sealed face fluorine lining ball valve, includes the main valve body (1), set up in the vice valve body (2) of the main valve body (1), install in valve rod (3) of the main valve body (1) and set up in the inside valve ball (4) that just is driven by valve rod (3) of the main valve body (1), be equipped with in the main valve body (1) and cooperate valve ball (4) to realize sealed main valve seat (5), main valve body (1) inner wall is equipped with first lining fluorine layer (6), vice valve body (2) inner wall is equipped with second lining fluorine layer (7), and valve rod (3) outer wall is equipped with third lining fluorine layer (8), and valve ball (4) outer wall is equipped with fourth lining fluorine layer (9), be equipped with between third lining fluorine layer (8) and first lining fluorine layer (6) and seal packing (10), its characterized in that: be formed with gapped (11) between third lining fluorine layer (8) and seal filler (10), third lining fluorine layer (8) are equipped with around sealing bulge loop (12) in valve rod (3) centre of a circle towards the one side in clearance (11), seal filler (10) are equipped with around sealing ring groove (13) in valve rod (3) centre of a circle corresponding to the position of sealing bulge loop (12), sealing bulge loop (12) and seal filler (10) are sealed the cooperation between the two and are formed first sealed face (14) and second sealed face (15) that are located sealing ring groove (13) both sides respectively, it has first sealed lubricant layer (16) to seal ring groove (13) intussuseption.
2. The multi-pass, fluorine-lined ball valve as defined in claim 1, wherein: and a sealing ring (17) is arranged between the third fluorine lining layer (8) and the sealing filler (10), and the peripheral wall of the sealing convex ring (12) is an arc-shaped surface (18) protruding outwards.
3. The multi-pass, fluorine-lined ball valve of claim 2, wherein: and a second sealing lubricant layer (19) is filled in the gap (11) at a position between the sealing ring (17) and the sealing convex ring (12).
4. The multi-pass, fluorine-lined ball valve as defined in claim 1, wherein: the main valve body is characterized in that a packing gland (20) is arranged above the sealing packing (10), a locking piece (21) for driving the packing gland (20) to move towards the sealing packing (10) is arranged between the packing gland (20) and the main valve body (1), a pressing sleeve (22) driven by the packing gland (20) is arranged between the packing gland (20) and the sealing packing (10), and the packing gland (20) drives the sealing packing (10) to abut against the first fluorine lining layer (6) and the third fluorine lining layer (8) through the pressing sleeve (22).
5. The multi-pass, fluorine-lined ball valve of claim 4, wherein: the sealing packing is characterized in that a slot (23) for inserting the pressing sleeve (22) is formed in the sealing packing (10), two side walls of the slot (23) gradually contract inwards towards the bottom of the slot (23) to form a guide inclined plane (24), and a guide portion (25) matched with the guide inclined plane (24) is arranged on the pressing sleeve (22).
6. The multi-pass, fluorine-lined ball valve as defined in claim 1, wherein: the valve ball (4) bottom is equipped with and valve rod (3) coaxial setting's reference column (26), form between first lining fluorine layer (6) and second lining fluorine layer (7) and supply mounting groove (27) of reference column (26) installation.
7. The multi-pass, fluorine-lined ball valve of claim 6, wherein: the positioning column (26) is sleeved with a positioning sleeve (28), one end face of the positioning sleeve (28) abuts against the fourth fluorine lining layer (9), and the other end face of the positioning sleeve (28) abuts against the first fluorine lining layer (6).
8. The multi-pass, fluorine-lined ball valve as defined in claim 1, wherein: be equipped with on first lining fluorine layer (6) and restrict ladder groove (29) that sealed filler (10) removed towards valve ball (4), be equipped with on sealed filler (10) with ladder protruding (30) of ladder groove (29) looks adaptation.
9. The multi-pass, fluorine-lined ball valve as defined in claim 1, wherein: be equipped with in the auxiliary valve body (2) and cooperate valve ball (4) to realize sealed auxiliary valve seat (31), first lining fluorine layer (6) are contradicted in the position of main valve seat (5), second lining fluorine layer (7) are contradicted in the position of auxiliary valve seat (31) and all are equipped with first sealing washer (32).
10. The multi-pass, fluorine-lined ball valve of claim 4, wherein: the pressing sleeve (22) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982491.7A CN110778737A (en) | 2019-10-16 | 2019-10-16 | Multi-sealing surface fluorine lining ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982491.7A CN110778737A (en) | 2019-10-16 | 2019-10-16 | Multi-sealing surface fluorine lining ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110778737A true CN110778737A (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910982491.7A Pending CN110778737A (en) | 2019-10-16 | 2019-10-16 | Multi-sealing surface fluorine lining ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN110778737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145736A (en) * | 2020-09-21 | 2020-12-29 | 耐氟隆集团有限公司 | Full-bore high-performance fluorine-lined ball valve |
-
2019
- 2019-10-16 CN CN201910982491.7A patent/CN110778737A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145736A (en) * | 2020-09-21 | 2020-12-29 | 耐氟隆集团有限公司 | Full-bore high-performance fluorine-lined ball valve |
| CN112145736B (en) * | 2020-09-21 | 2022-07-01 | 耐氟隆集团有限公司 | Full-bore high-performance fluorine-lined ball valve |
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