CN211039758U - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN211039758U CN211039758U CN201921695081.6U CN201921695081U CN211039758U CN 211039758 U CN211039758 U CN 211039758U CN 201921695081 U CN201921695081 U CN 201921695081U CN 211039758 U CN211039758 U CN 211039758U
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- section
- disc spring
- gasket
- gland
- diameter
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- 210000004907 gland Anatomy 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Abstract
The utility model discloses a ball valve, which comprises a spherical valve rod, a gland, a valve body, a disc spring, a gasket and a sealing cap, wherein the spherical valve rod is installed in the valve body, and the gland, the disc spring, the gasket and the sealing cap are sequentially pressed in the outer part of the spherical valve rod from top to bottom; the gasket comprises a large outer circle section, a small outer cylinder section, a head area, a small outer cylinder section diameter and a guide section, the inner cylinder section is installed on the outer side of the large outer circle section, the head area is pressed into the hollow area, the small outer cylinder section diameter is tightly pressed with the hollow outline diameter, and the cylinder section penetrates through the guide section. The gasket of the small outer cylindrical section with the guide section is designed to be matched with the inner hole of the disc spring, the disc spring cannot move outwards to cut the inner threaded section of the valve body, and meanwhile, the disc spring does not contact the spherical valve rod and does not cut the cylindrical section of the spherical valve rod naturally. The rubbing phenomenon caused by inward and outward expansion when the disc spring is compressed and deformed is restrained by limiting the position of the disc spring.
Description
Technical Field
The utility model relates to a ball valve field, concretely relates to ball valve.
Background
The ball valve seal widely used in the market is realized by tightly holding a spherical valve rod through a seal cap and simultaneously pressing a valve body. The ball valve has simple structure and easy sealing. However, the problem is that the sealing force of the sealing cap holding the ball valve rod is weakened under the condition that the temperature of the environment of the ball valve is high and low alternately or the temperature of a medium in the valve is high and low alternately, so that leakage is caused.
Therefore, a new structure of ball valve has appeared to solve the leakage problem, and in detail, as shown in fig. 1, the disc spring is an elastic element, and the disc spring has the capability of storing elastic potential energy in a compressed state. Therefore, different structures essentially increase an energy storage mechanism, the elastic force can be continuously pressed to the sealing cap through the gasket, and finally the spherical valve rod is tightly held through the sealing cap. Obviously, when the sealing force of the sealing cap for tightly holding the spherical valve rod of the ball valve is weakened, the elastic force stored by the disc spring combination is timely supplemented, the sealing force compensation is realized, and the sealing reliability and the durability are enhanced. However, the disc spring expands radially toward the inner thread portion as the outer ring diameter of the disc spring increases during compression. Meanwhile, the diameter of the inner ring of the disc spring is reduced in the compression process of the disc spring, the disc spring expands to the cylindrical section in the radial direction, and the local gap is changed to zero due to the internal and external expansion of the disc spring, so that the rubbing is generated, and the transmission efficiency of the disc spring force is weakened. When the ball valve is serious, the edge angle of the outer ring of the disc spring is extruded into the thread teeth of the inner thread part, and the inner ring of the disc spring is pricked into the cylindrical section part, so that the operation comfort of the ball valve is influenced, even the phenomenon of blocking is caused, and the ball valve is scrapped.
Disclosure of Invention
In view of the above defects or shortcomings in the prior art, it is desirable to provide a ball valve, which solves the problem that the disc spring is easy to scratch and affect the operation of the ball valve.
According to the technical scheme provided by the embodiment of the application, the ball valve comprises a spherical valve rod, a gland, a valve body, a disc spring, a gasket and a sealing cap, wherein the spherical valve rod is installed in the valve body, and the gland, the disc spring, the gasket and the sealing cap are sequentially pressed into the outer part of the spherical valve rod from top to bottom;
the ball valve rod comprises a cylindrical section, and the cylindrical section penetrates through the gland;
the gland comprises a hollow area and a hollow outline diameter, the gasket is pressed into the hollow area, and the disc spring is pressed at the lower end of the gland;
the valve body comprises an internal thread section and an internal cylindrical section, the internal thread section is arranged outside the disc spring, and the internal cylindrical section is arranged outside the gasket;
the disc spring comprises an outer contour cylinder and an inner hole, the gland is pressed on the outer contour cylinder, the inner thread section is installed on the outer side of the outer contour cylinder, and the gasket is inserted into the inner hole;
the gasket comprises a large outer circle section, a small outer cylinder section, a head area, a small outer cylinder section diameter and a guide section, the inner cylinder section is installed on the outer side of the large outer circle section, the small outer cylinder section penetrates through the inner hole, the head area is pressed into the hollow area, the small outer cylinder section diameter is tightly pressed with the hollow outline diameter, and the cylinder section penetrates through the guide section.
The utility model discloses in, the gland has hollow structure, the lower extreme of gland is inside to be equipped with cavity region, cavity region's diameter does cavity profile diameter.
The utility model discloses in, the gasket has hollow structure, the upper end of big excircle section is equipped with little outer cylinder section, the upper end of little outer cylinder section is equipped with the head is regional.
The utility model discloses in, internal thread section and interior cylinder section all are located the inboard of valve body, the top of cylinder section including internal thread section sets up.
The utility model discloses in, the accurate cooperation installation between big excircle section and the interior cylinder section.
The utility model discloses in, the hole with little clearance fit installation between the little outer cylinder section.
The utility model discloses in, the installation of accurate cooperation between little outer cylinder section diameter and the cavity profile diameter.
To sum up, the beneficial effect of this application: the gasket of the small outer cylindrical section with the guide section is designed to be matched with the inner hole of the disc spring, the disc spring cannot move outwards to cut the inner threaded section of the valve body, and meanwhile, the disc spring does not contact the spherical valve rod and does not cut the cylindrical section of the spherical valve rod naturally. The rubbing phenomenon caused by inward and outward expansion when the disc spring is compressed and deformed is restrained by limiting the position of the disc spring.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a prior art block diagram of the background art;
FIG. 2 is a schematic view of the overall structure of the present invention;
fig. 3 is an enlarged view of a partial structure of the present invention
Fig. 4 is an enlarged view of a-a of the present invention.
Reference numbers in the figures: a ball valve stem-1; a cylindrical section-11;
a gland-2; hollow region-21; hollow profile diameter-22;
a valve body-3; an internal thread segment-31; an inner cylindrical section-32;
disc spring-4; an outer contour cylinder-41; an inner bore-42;
a gasket-5; a large outer circle segment-51; a small outer cylindrical section-52; head region-53; the diameter of the small outer cylindrical section is-54; a guide section-55; and (4) a sealing cap-6.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 2, 3 and 4, a ball valve includes a spherical valve rod 1, a gland 2, a valve body 3, a disc spring 4, a gasket 5 and a sealing cap 6, wherein the spherical valve rod 1 is installed in the valve body 3, and the gland 2, the disc spring 4, the gasket 5 and the sealing cap 6 are sequentially pressed in the spherical valve rod 1 from top to bottom; the ball valve rod 1 comprises a cylindrical section 11, and the cylindrical section 11 penetrates through the gland 2; the gland 2 comprises a hollow area 21 and a hollow outline diameter 22, the gasket 5 is pressed into the hollow area 21, and the disc spring 4 is pressed at the lower end of the gland 2; the valve body 3 comprises an internal thread section 31 and an internal cylindrical section 32, the internal thread section 31 is installed outside the disc spring 4, and the internal cylindrical section 32 is installed outside the gasket 5; the disc spring 4 comprises an outer contour cylinder 41 and an inner hole 42, the gland 2 is pressed on the outer contour cylinder 41, the inner thread section 31 is installed on the outer side of the outer contour cylinder 41, and the gasket 5 is inserted into the inner hole 42; the gasket 5 comprises a large outer circular section 51, a small outer circular section 52, a head area 53, a small outer circular section diameter 54 and a guide section 55, the inner circular section 32 is installed on the outer side of the large outer circular section 51, the small outer circular section 52 penetrates through the inner hole 42, the head area 53 is pressed into the hollow area 21, the small outer circular section diameter 54 is tightly pressed with the hollow profile diameter 22, and the circular cylindrical section 11 penetrates through the guide section 55. The gland 2 is provided with a hollow structure, the hollow area 21 is arranged in the lower end of the gland 2, and the diameter of the hollow area 21 is the diameter 22 of the hollow outline. The gasket 5 has a hollow structure, the upper end of the large outer cylindrical section 51 is provided with the small outer cylindrical section 52, and the upper end of the small outer cylindrical section 52 is provided with the head area 53. The internal thread section 31 and the internal cylindrical section 32 are both located on the inner side of the valve body 3, and the internal thread section 31 is arranged above the internal cylindrical section 32. The large outer cylindrical section 51 and the inner cylindrical section 32 are arranged in a precise fit manner. The inner hole 42 and the small outer cylindrical section 52 are installed in a small clearance fit mode. The small outer cylindrical section diameter 54 fits in a close fit with the hollow profile diameter 22.
As shown in fig. 2, the sealing structure of the ball valve patent is completed by: firstly, preparing a spherical valve rod 1, then installing a sealing cap 6 into the spherical valve rod 1, then sequentially installing a disc spring 4 and a gasket 5 onto the spherical valve rod 1, and then pressing the assembly into a valve body 3 to the bottom. Finally, the gland 2 is screwed in to realize sealing after screwing.
This technical scheme is realized like this, lets gasket 5 as the hole direction of dish spring 4, restricts the position of dish spring 4.
Therefore, the gasket 55 is designed to have the small outer cylindrical section 52 with the guide section 55 to match with the inner hole 42 of the disc spring 4, so that the disc spring 4 cannot move outwards to scratch the inner threaded section 31 of the valve body 3, and meanwhile, the disc spring 4 does not contact the spherical valve rod 1 and naturally scratches the cylindrical section 11 of the spherical valve rod.
The gasket 5 plays a role of bearing up and down, and the transmission of the position precision is realized through precise matching. The large outer circle section 51 of the gasket 5 is precisely matched with the inner cylindrical section 32 of the ball valve body 3, and the coaxial precision of the gasket 5 and the valve body 3 is determined. Meanwhile, the inner hole 42 of the disc spring 4 is in small clearance fit with the small outer cylindrical section 52 of the gasket 5, so that the disc spring 4 cannot move outwards to scratch the internal threaded section 31 of the valve body 3. Meanwhile, the head area 53 of the gasket 5 extends into the hollow area 21 of the gland 2, and the small outer cylindrical section diameter 54 of the head area is precisely matched with the hollow outline diameter 22 of the gland 2, so that the coaxial precision of the gland 2 and the valve body 3 is ensured, and the force transmission is more efficient when the gland 2 is screwed.
Meanwhile, the head area 53 of the gasket 5 extends into the hollow area 21 of the gland 2, so that the disc spring 4 can be completely sleeved on the guide section 55 of the gasket 5 when not compressed, and the position of the whole disc spring compression process is restrained.
The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A ball valve is characterized in that: the ball valve comprises a spherical valve rod (1), a gland (2), a valve body (3), a disc spring (4), a gasket (5) and a sealing cap (6), wherein the spherical valve rod (1) is installed in the valve body (3), and the gland (2), the disc spring (4), the gasket (5) and the sealing cap (6) are sequentially pressed into the outer part of the spherical valve rod (1) from top to bottom;
the ball valve rod (1) comprises a cylindrical section (11), and the cylindrical section (11) penetrates through the gland (2);
the gland (2) comprises a hollow area (21) and a hollow outline diameter (22), the gasket (5) is pressed into the hollow area (21), and the disc spring (4) is pressed at the lower end of the gland (2);
the valve body (3) comprises an internal thread section (31) and an internal cylindrical section (32), the internal thread section (31) is installed outside the disc spring (4), and the internal cylindrical section (32) is installed outside the gasket (5);
the disc spring (4) comprises an outer contour cylinder (41) and an inner hole (42), the gland bush (2) is pressed on the outer contour cylinder (41), the inner thread section (31) is installed on the outer side of the outer contour cylinder (41), and the gasket (5) is inserted into the inner hole (42);
the gasket (5) comprises a large outer circle section (51), a small outer cylinder section (52), a head area (53), a small outer cylinder section diameter (54) and a guide section (55), the inner cylinder section (32) is installed on the outer side of the large outer circle section (51), the small outer cylinder section (52) penetrates through the inner hole (42), the head area (53) is pressed into the hollow area (21), the small outer cylinder section diameter (54) is tightly pressed with the hollow profile diameter (22), and the cylinder section (11) penetrates through the guide section (55).
2. A ball valve as defined in claim 1, wherein: the gland (2) is provided with a hollow structure, the hollow area (21) is arranged in the lower end of the gland (2), and the diameter of the hollow area (21) is the hollow outline diameter (22).
3. A ball valve as defined in claim 1, wherein: the gasket (5) is of a hollow structure, the small outer cylindrical section (52) is arranged at the upper end of the large outer circular section (51), and the head area (53) is arranged at the upper end of the small outer cylindrical section (52).
4. A ball valve as defined in claim 1, wherein: the internal thread section (31) and the internal cylindrical section (32) are both located on the inner side of the valve body (3), and the internal thread section (31) is arranged above the internal cylindrical section (32).
5. A ball valve as defined in claim 1, wherein: the large outer circle section (51) and the inner cylinder section (32) are installed in a precise fit mode.
6. A ball valve as defined in claim 1, wherein: the inner hole (42) and the small outer cylindrical section (52) are installed in a small clearance fit mode.
7. A ball valve as defined in claim 1, wherein: the small outer cylindrical section diameter (54) is installed in a precise fit with the hollow profile diameter (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921695081.6U CN211039758U (en) | 2019-10-11 | 2019-10-11 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921695081.6U CN211039758U (en) | 2019-10-11 | 2019-10-11 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039758U true CN211039758U (en) | 2020-07-17 |
Family
ID=71534546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921695081.6U Active CN211039758U (en) | 2019-10-11 | 2019-10-11 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211039758U (en) |
-
2019
- 2019-10-11 CN CN201921695081.6U patent/CN211039758U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231218 Address after: No. 001, Shiqiao Village, Shiqiao Town, Baofeng County, Pingdingshan City, Henan Province, 467400 Patentee after: Henan Xiongchuan Fluid Engineering Co.,Ltd. Address before: 065000 Building 9, building 7, building 8, No. 72, Jinyuan East Road, economic and Technological Development Zone, Langfang City, Hebei Province Patentee before: XIONGCHUAN VALVE TCHNOLOGY HEBEI CO.,LTD. |