CN216975853U - Soft sealing ball valve - Google Patents
Soft sealing ball valve Download PDFInfo
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- CN216975853U CN216975853U CN202123391031.9U CN202123391031U CN216975853U CN 216975853 U CN216975853 U CN 216975853U CN 202123391031 U CN202123391031 U CN 202123391031U CN 216975853 U CN216975853 U CN 216975853U
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Abstract
The utility model discloses a soft sealing ball valve, which comprises a valve body, a valve ball arranged in the valve body and a valve rod penetrating into the valve body and connected with the valve ball, wherein valve seats are respectively arranged in an inlet channel and an outlet channel of the valve body, and the valve seats and the valve ball form contact sealing, and the soft sealing ball valve is characterized in that: the valve seat comprises a valve seat bracket and a soft valve seat embedded on the valve seat bracket, and the valve seat is in contact sealing with the soft valve seat and the valve ball. Compared with the existing metal ball valve, the soft valve seat is made of softer materials, the soft valve seat and the valve ball form contact sealing, the contact between the soft valve seat and the valve ball is prevented from being too rigid, the problem that a contact sealing surface is easy to strain is avoided, and the sealing effect is longer.
Description
Technical Field
The utility model relates to the field of valves, in particular to a soft seal ball valve.
Background
The valve is an indispensable fluid control device for all departments of national economy. In recent years, while meeting new requirements of high parameters in all aspects, great attention is paid to how to better improve performance, reduce cost and the like in the aspects of valve structures, materials, production processes and the like.
The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve, and can be used for adjusting and controlling fluid. In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. Compared with other valves, the ball valve has the advantages of wear resistance, good sealing performance, light switch, long service life, small volume, light weight and the like, but the ball valve has high machining precision requirement and high manufacturing cost.
At present, most ball valves on the market adopt a hard seal design, and the contact sealing surface of a valve seat and a ball body is easy to have the defects of strain and the like, so that the sealing failure is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a soft seal ball valve with longer sealing effect.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a soft seal ball valve, includes the valve body, installs valve ball in the valve body and penetrating the valve body with the valve rod that the valve ball is connected, be equipped with the disk seat in the exit passageway of valve body respectively, the disk seat with the valve ball forms the contact seal, the disk seat includes the disk seat bracket and inlays to be established soft disk seat on the disk seat bracket, the disk seat with soft disk seat with the valve ball forms the contact seal.
Furthermore, the valve seat bracket is clamped in a circle of concave steps arranged on the inner wall of the valve body, and a belleville spring is arranged between the outer end face of the valve seat bracket and the outer side wall of each step.
Furthermore, a sealing ring and a graphite packing are arranged between the peripheral surface of the valve seat bracket and the peripheral side wall of the step.
Furthermore, the step is in a secondary ladder shape, and the graphite packing and the sealing ring are respectively positioned on an inner step ladder and an outer step ladder of the step.
Further, the soft valve seat is made of a tetrafluoro material.
Furthermore, a first soft bearing is installed between the valve rod and the valve body through a first bearing seat, and a second soft bearing is installed between the ball body and the valve body through a second bearing seat.
Furthermore, the cross section of the first soft bearing is L-shaped, a circle of flange is arranged on the valve rod, the inner side wall of the first soft bearing is attached to the valve rod and the flange, and the first bearing seat is clamped between the outer side wall of the first soft bearing and the valve body.
Furthermore, the cross section of the second soft bearing is L-shaped, a boss is arranged at the top of the valve ball, the second soft bearing is sleeved on the boss, and the second bearing seat is clamped between the outer side wall of the second soft bearing and the valve body.
Further, the valve also comprises a base support arranged at the bottom of the valve body.
Further, the base support comprises two rectangular pipes, and the valve body is connected with the rectangular pipes through backing rings.
The utility model has the beneficial effects that:
compared with the existing metal ball valve, the soft valve seat is made of softer materials, the soft valve seat and the valve ball are in contact sealing, the contact between the soft valve seat and the valve ball is prevented from being too rigid, the problem that the contact sealing surface is easily scratched is avoided, and the sealing effect is longer-acting.
Drawings
Fig. 1 is a schematic perspective view of a soft seal ball valve according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a soft seal ball valve according to an embodiment of the present invention.
Fig. 3 is a partially enlarged perspective view of a portion a in fig. 2.
Fig. 4 is a partially enlarged perspective view of B in fig. 2.
The components in the drawings are labeled as follows:
the valve comprises a valve body 1, a valve ball 2, a valve rod 3, a valve cover 4, a valve seat bracket 5, a soft valve seat 6, a butterfly spring 7, a sealing ring 8, a graphite packing 9, a first bearing seat 10, a first soft bearing 11, a second bearing seat 12, a second soft bearing 13, a rectangular pipe 14, a backing ring 15, a step 16, a flange 17 and a boss 18.
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.
It should be noted that if directional indications such as up, down, left, right, front, and rear … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, motion, and the like between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
See fig. 1 and 2.
The utility model discloses a soft sealing ball valve, which comprises a valve body 1, a valve ball 2 arranged in the valve body 1 and a valve rod 3 penetrating into the valve body 1 and connected with the valve ball 2, wherein valve seats are respectively arranged in inlet and outlet channels of the valve body 1, the valve seats and the valve ball 2 form contact sealing, each valve seat comprises a valve seat bracket 5 and a soft valve seat 6 embedded on the valve seat bracket 5, and the valve seats and the valve ball 2 form contact sealing through the soft valve seats 6.
Compared with the existing metal ball valve, the soft valve seat is made of softer materials, the soft valve seat and the valve ball are in contact sealing, the contact between the soft valve seat and the valve ball is prevented from being too rigid, the problem that the contact sealing surface is easily scratched is avoided, and the sealing effect is longer-acting.
In the prior art, a valve cover 4 fixed on the top of the valve body 1 is also generally designed, and the valve rod 3 penetrates through the valve cover 4.
In one embodiment, the seat bracket 5 is clamped in a circle of concave steps 16 formed on the inner wall of the valve body 1, and a belleville spring 7 is installed between the outer end surface of the seat bracket 5 and the outer side wall of the steps 16. By the design, the butterfly spring can provide inward elastic force, the soft valve seat can be pressed on the valve ball under the elastic force action of the butterfly spring, the sealing effect is better, and the leakage of media at the valve seat can be effectively prevented.
In one embodiment, a seal ring 8 and a graphite packing 9 are mounted between the outer peripheral surface of the seat bracket 5 and the peripheral side wall of the step 16. By the design, the sealing ring can prevent the leakage of a medium at the position of the belleville spring, and the graphite packing can provide a guide effect for the whole valve seat bracket.
In one embodiment, the step 16 is in a two-step shape, and the graphite packing 9 and the sealing ring 8 are respectively located on an inner step and an outer step of the step 16. By the design, the valve seat bracket is more stably installed, and the graphite packing and the sealing ring are not easy to lose efficacy.
In one embodiment, the soft valve seat 6 is made of a tetrafluoro material. The polytetrafluoroethylene material has good corrosion and wear resistance effects and moderate hardness, and is suitable for the design of the utility model. In particular implementations, a polytetrafluoroethylene material may be used.
In one embodiment, a first soft bearing 11 is mounted between the valve stem 3 and the valve body 1 through a first bearing seat 10, and a second soft bearing 13 is mounted between the ball and the valve body 1 through a second bearing seat 12. In the prior art, the valve rod and the ball body are guided by a shaft sleeve and the inner wall of a valve body, namely the valve rod-shaft sleeve-inner wall form, the contact guide surface is an inner cylindrical surface and an outer cylindrical surface of the shaft sleeve, and the contact friction between the bottom surface of the shaft sleeve and the step of the valve rod or the ball body is large. The utility model is designed to use the flexible shaft bearing as a guide structure, and the used flexible shaft bearing has the advantages of low friction coefficient, good wear resistance, high surface pressure resistance and good guide performance.
In an embodiment, the cross section of the first soft bearing 11 is L-shaped, a ring of flange 17 is arranged on the valve rod 3, the inner side wall of the first soft bearing 11 is attached to the valve rod 3 and the flange 17, and the first bearing seat 10 is clamped between the outer side wall of the first soft bearing 11 and the valve body 1. By the design, the bearing can play the roles of axial positioning and thrust.
In an embodiment, the cross section of the second soft bearing 13 is L-shaped, a boss 18 is disposed at the top of the valve ball 2, the second soft bearing 13 is sleeved on the boss 18, and the second bearing seat is clamped between the outer side wall of the second soft bearing 13 and the valve body 1. The bearing is designed to play a role in axial positioning and thrust.
In one embodiment, the valve further comprises a base bracket mounted at the bottom of the valve body 1. Most of valves in the market are fixed by pipelines connected at two sides, and when the size of the valve is large and the site is accompanied by vibration and the like, the fixing mode is obviously unreliable. The utility model adds the base bracket, so that the fixation is more reliable and the anti-vibration capability is stronger.
In one embodiment, the base bracket comprises two rectangular tubes 14, and the valve body 1 is connected with the rectangular tubes 14 through a backing ring 15. The base support comprises rectangular pipe, backing ring, through the screwed connection to the valve body on, simple structure, easy preparation, the supporting effect is reliable, can adjust the shape of the height of backing ring and rectangular pipe to the scene condition of difference, can be more convenient fix the valve to the bearing structure on scene.
It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, as various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.
Claims (10)
1. The utility model provides a soft seal ball valve, includes valve body (1), installs valve ball (2) in valve body (1) and penetrate valve rod (3) that valve body (1) with valve ball (2) are connected, be equipped with the disk seat in the exit passageway of valve body (1) respectively, the disk seat with valve ball (2) form the contact seal, its characterized in that: the valve seat comprises a valve seat bracket (5) and a soft valve seat (6) embedded on the valve seat bracket (5), and the valve seat is in contact sealing with the soft valve seat (6) and the valve ball (2).
2. The soft seal ball valve of claim 1, wherein: the valve seat bracket (5) is clamped in a circle of concave steps (16) arranged on the inner wall of the valve body (1), and a belleville spring (7) is arranged between the outer end face of the valve seat bracket (5) and the outer side wall of each step (16).
3. The soft seal ball valve of claim 2, wherein: and a sealing ring (8) and a graphite packing (9) are arranged between the peripheral surface of the valve seat bracket (5) and the peripheral side wall of the step (16).
4. The soft seal ball valve of claim 3, wherein: the step (16) is in a two-stage step shape, and the graphite packing (9) and the sealing ring (8) are respectively positioned on an inner stage step and an outer stage step of the step (16).
5. The soft seal ball valve as claimed in any one of claims 1 to 4, wherein: the soft valve seat (6) is made of tetrafluoro materials.
6. The soft seal ball valve as claimed in any one of claims 1 to 4, wherein: the valve ball is characterized in that a first soft bearing (11) is installed between the valve rod (3) and the valve body (1) through a first bearing seat (10), and a second soft bearing (13) is installed between the valve ball (2) and the valve body (1) through a second bearing seat (12).
7. The soft seal ball valve of claim 6, wherein: the cross section of the first soft bearing (11) is L-shaped, a circle of flange (17) is arranged on the valve rod (3), the inner side wall of the first soft bearing (11) is attached to the valve rod (3) and the flange (17), and the first bearing seat (10) is clamped between the outer side wall of the first soft bearing (11) and the valve body (1).
8. The soft seal ball valve of claim 6, wherein: the cross section of the second soft bearing (13) is L-shaped, a boss (18) is arranged at the top of the valve ball (2), the second soft bearing (13) is sleeved on the boss (18), and the second bearing seat is clamped between the outer side wall of the second soft bearing (13) and the valve body (1).
9. The soft seal ball valve of any one of claims 1 to 4, wherein: the valve also comprises a base support arranged at the bottom of the valve body (1).
10. The soft seal ball valve of claim 9, wherein: the base support comprises two rectangular pipes (14), and the valve body (1) is connected with the rectangular pipes (14) through backing rings (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123391031.9U CN216975853U (en) | 2021-12-29 | 2021-12-29 | Soft sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123391031.9U CN216975853U (en) | 2021-12-29 | 2021-12-29 | Soft sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975853U true CN216975853U (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123391031.9U Active CN216975853U (en) | 2021-12-29 | 2021-12-29 | Soft sealing ball valve |
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| Country | Link |
|---|---|
| CN (1) | CN216975853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115899310A (en) * | 2023-01-06 | 2023-04-04 | 无锡斯考尔自动控制设备有限公司 | High-frequency metal hard sealing ball valve |
-
2021
- 2021-12-29 CN CN202123391031.9U patent/CN216975853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115899310A (en) * | 2023-01-06 | 2023-04-04 | 无锡斯考尔自动控制设备有限公司 | High-frequency metal hard sealing ball valve |
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