CN216009615U - High-safety high-temperature-resistant double-sealing ball valve - Google Patents
High-safety high-temperature-resistant double-sealing ball valve Download PDFInfo
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- CN216009615U CN216009615U CN202122106685.6U CN202122106685U CN216009615U CN 216009615 U CN216009615 U CN 216009615U CN 202122106685 U CN202122106685 U CN 202122106685U CN 216009615 U CN216009615 U CN 216009615U
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Abstract
The utility model discloses a high-safety high-temperature-resistant double-sealing ball valve, the joint of a ball body and a valve cavity is provided with a hard sealing structure and a soft sealing structure, the soft sealing structure consists of a first soft sealing body and a second soft sealing body with a limiting part, two ends of a groove body and a step of the valve cavity, the outer sides of the upper ends of the first soft sealing body and the second soft sealing body are butted on the step, the outer side of the valve body is also provided with two pairs of adjusting bolts, the inner ends of the two pairs of adjusting bolts are provided with cushion blocks and are butted on the first soft sealing body and the second soft sealing body, the hard sealing structure comprises a first hard sealing body and a second hard sealing body which are composed of a graphite ring and a metal ring, the inner periphery of the graphite ring is butted with the ball body, the inner periphery of the metal ring is kept at a distance with the ball body, and the first soft sealing body is arranged between the first hard sealing body and the second sealing body, still be equipped with the multiunit spring between the soft seal of second and the hard seal of second, the utility model discloses can guarantee still can smooth and easy rotation after the spheroid inflation under the prerequisite of guaranteeing the leakproofness.
Description
Technical Field
The utility model relates to a high safe high temperature resistant double sealing ball valve.
Background
Ball valves are often applied to pipelines for conveying high-temperature media, and are used for controlling opening and closing of the pipelines; the ball body of the ball valve is generally a metal casting, and the ball body can expand to a certain degree under the action of high temperature, so that the ball valve cannot be normally opened or closed, and further accidents can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of above-mentioned prior art, provide a high safe high temperature resistant double sealing ball valve.
The technical scheme of the utility model is that: a high-safety high-temperature-resistant double-seal ball valve comprises a valve body, a ball body and a valve rod, wherein a valve cavity is arranged in the valve body, the ball body is arranged in the valve cavity and fixed with the valve rod, and a hard seal structure and a soft seal structure are arranged at the joint of the ball body and the valve cavity;
the soft seal is composed of a first soft seal body and a second soft seal body which are arranged at two sides of the ball body, the outer sides of the first soft seal body and the second soft seal body are provided with square limiting parts, two ends of the valve cavity are provided with groove bodies corresponding to the limiting parts, the limiting parts are clamped in the corresponding groove bodies, the inner wall of the valve cavity above the groove body is provided with steps corresponding to the first soft sealing body and the second soft sealing body, the outer sides of the upper ends of the first soft sealing body and the second soft sealing body are abutted against the steps, arc-shaped grooves are formed in one sides of the first soft sealing body and the second soft sealing body facing the ball body, the shape of the arc-shaped groove corresponds to the shape of the sphere, the upper end and the lower end of the sphere are abutted against the arc-shaped groove, the first soft sealing body and the second soft sealing body are respectively provided with a hole penetrating through the limiting part, and the holes and the valve cavity are coaxially arranged;
the outer side of the valve body is also provided with two pairs of adjusting bolts, the two pairs of adjusting bolts are respectively arranged corresponding to the positions of the first soft sealing body and the second soft sealing body, the inner ends of the two pairs of adjusting bolts extend into the valve cavity, the end parts of the two pairs of adjusting bolts are provided with cushion blocks, the cushion blocks abut against the outer side faces, in contact with the steps, of the first soft sealing body or the second soft sealing body, and the joints of the adjusting bolts and the valve body are also provided with seals;
the hard seal is composed of a first hard seal body and a second hard seal body, both the first hard seal body and the second hard seal body comprise a graphite ring and a metal ring, the inner peripheries of the first hard sealing body and the second hard sealing body are provided with bellmouths corresponding to the shapes of the spheres, the valve cavity is provided with two concave rings which are respectively arranged at the inner sides of the first soft sealing body and the second soft sealing body, the first hard sealing body and the second hard sealing body are respectively movably connected in the concave ring, the metal ring is arranged at one side close to the ball body, the inner circumference of the graphite ring is abutted with the sphere, the inner circumference of the metal ring keeps a distance with the sphere, and a plurality of groups of springs are arranged between the first soft sealing body and the first hard sealing body and between the second soft sealing body and the second hard sealing body so as to keep the soft sealing body to press the hard sealing body and enable the hard sealing body to be tightly attached to the outer side of the ball body.
Specifically, the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod penetrates out of the valve body from the top of the valve cavity, sealing and filling materials are arranged at the joint of the valve body and the upper valve rod, and the lower valve rod is rotatably connected to the bottom of the valve cavity.
Specifically, the upper end and the lower end of the ball body keep a distance with the top and the bottom of the valve cavity, and the outer side wall of the concave ring is in arc-shaped transition connection with the top of the valve cavity.
Specifically, the valve body comprises an upper valve body and a lower valve body.
Optionally, the upper valve body and the lower valve body are welded into a whole.
Optionally, the upper valve body and the lower valve body are respectively provided with a connecting part, the upper valve body and the lower valve body are connected into a whole through a fixing bolt, and a sealing gasket is further arranged at the connecting part of the upper valve body and the lower valve body.
The utility model has the advantages that: the utility model adopts two sealing structures of hard sealing and soft sealing, which can ensure the sealing performance of the ball valve, and the hard sealing can move left and right in a certain range under the action of the soft sealing and the spring, so as to ensure that the ball body can still rotate smoothly after expanding; the adjusting bolt is further arranged on the outer side of the soft seal, the pressing force of the soft seal on the hard seal can be adjusted, and even if the soft seal is aged or the hard seal is abraded, the tightness of the ball valve can be still ensured by rotating the adjusting bolt.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Referring to fig. 1 and 2, the high-safety high-temperature-resistant double-seal ball valve comprises a valve body, a ball body 1 and a valve rod, wherein a valve cavity 2 is arranged in the valve body, the valve rod is composed of an upper valve rod 3 and a lower valve rod 4, the upper valve rod 3 penetrates out of the valve body from the top of the valve cavity 2, a seal and a filler are arranged at the joint of the valve body and the upper valve rod 3, the lower valve rod 4 is rotatably connected to the bottom of the valve cavity 2, and the ball body 1 is arranged in the valve cavity 2 and fixed with the upper valve rod 3 and the lower valve rod 4;
the joint of the ball body 1 and the valve cavity 2 is provided with a hard sealing structure and a soft sealing structure;
the soft seal comprises a first soft seal body 5 and a second soft seal body 6 which are arranged at two sides of a ball body 1, the outer sides of the first soft seal body 5 and the second soft seal body 6 are provided with square limiting parts 7, two ends of a valve cavity 2 are provided with groove bodies corresponding to the limiting parts 7, the limiting parts 7 are clamped into the corresponding groove bodies to prevent the first soft seal body 5 and the second soft seal body 6 from generating displacement along with the rotation of the ball body 1, the inner wall of the valve cavity 2 above the groove bodies is provided with steps corresponding to the first soft seal body 5 and the second soft seal body 6, the outer sides of the upper ends of the first soft seal body 5 and the second soft seal body 6 are butted on the steps, one sides of the first soft seal body 5 and the second soft seal body 6 facing the ball body 1 are provided with arc-shaped grooves, the shape of the arc-shaped grooves corresponds to the shape of the ball body 1, and the upper and lower ends of the ball body 1 are butted with the arc-shaped grooves, the first soft sealing body 5 and the second soft sealing body 6 are respectively provided with a hole penetrating through the limiting part 7, and the holes are coaxial with the valve cavity 2;
two pairs of adjusting bolts 8 are further arranged on the outer side of the valve body, the two pairs of adjusting bolts 8 are respectively arranged corresponding to the positions of the first soft sealing body 5 and the second soft sealing body 6, the inner ends of the two pairs of adjusting bolts 8 extend into the valve cavity 2, cushion blocks are arranged at the end parts of the two pairs of adjusting bolts 8, the cushion blocks abut against the outer side faces, in contact with the steps, of the first soft sealing body 5 or the second soft sealing body 6, and sealing is further arranged at the connection parts of the adjusting bolts 8 and the valve body;
the pressing force of the first soft sealing body 5 and the second soft sealing body 6 to the direction of the ball body 1 can be adjusted by rotating the adjusting bolt 8;
the hard seal comprises a first hard seal body 9 and a second hard seal body 10, the first hard seal body 9 and the second hard seal body 10 both comprise a graphite ring 11 and a metal ring 12, the inner peripheries of the first hard seal body 9 and the second hard seal body 10 are provided with horn mouths corresponding to the shape of the ball body 1, the valve cavity 2 is provided with two concave rings 13, the two concave rings 13 are respectively arranged at the inner sides of the first soft seal body 5 and the second soft seal body 6, the first hard seal body 9 and the second hard seal body 10 are respectively movably connected in the concave rings 13, the metal ring 12 is arranged at one side close to the ball body 1, the inner periphery of the graphite ring 11 is abutted against the ball body 1, and the inner periphery of the metal ring 12 is spaced from the ball body 1 to avoid scratching the appearance of the ball body 1; a plurality of groups of springs 14 are arranged between the first soft sealing body 5 and the first hard sealing body 9 and between the second soft sealing body 6 and the second hard sealing body 10 so as to keep the soft sealing to press the hard sealing, so that the hard sealing is tightly attached to the outer side of the ball body 1;
in the structure, the first soft seal has certain elasticity, the first hard seal 9 and the second hard seal 10 can move left and right in a certain range on the concave ring 13 under the action of the first soft seal 5 and the spring 14, the smoothness of the sliding of the first hard seal 9 and the second hard seal 10 is ensured by the characteristic of the graphite ring 11, when the ball body 1 heated for a long time expands to a certain extent, the first hard seal 9 and the second hard seal 10 can generate corresponding displacement to ensure that the ball body 1 can smoothly rotate, and the fault is avoided; the double sealing ensures the sealing performance of the whole ball valve;
furthermore, the upper end and the lower end of the ball body 1 keep a distance with the top and the bottom of the valve cavity 2 to ensure the smooth rotation of the ball body 1, and the outer side wall of the concave ring 13 is in arc transition connection with the top of the valve cavity 2 to ensure the strength of the position;
specifically, the valve body consists of an upper valve body 15 and a lower valve body 16, so that the internal components of the valve body can be conveniently installed and fixed;
optionally, the upper valve body 15 and the lower valve body 16 are welded into a whole, so as to ensure the sealing performance of the whole valve body and avoid leakage at the joint of the upper valve body 15 and the lower valve body 16;
optionally, each has connecting portion on last valve body 15 and the lower valve body 16, it is as an organic whole that last valve body 15 passes through fixing bolt with lower valve body 16 to go up valve body 15 and lower valve body 16's junction still is equipped with sealed the pad to make whole valve body can dismantle, so that open the valve body to the maintenance and the change of the subassembly of inside, in order to improve the whole life-span of valve body.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a high safe high temperature resistant double sealing ball valve, includes valve body, spheroid and valve rod, be equipped with the valve pocket in the valve body, the spheroid sets up in the valve pocket and fixes its characterized in that mutually with the valve rod: the joint of the ball body and the valve cavity is provided with a hard sealing structure and a soft sealing structure;
the soft seal is composed of a first soft seal body and a second soft seal body which are arranged at two sides of the ball body, the outer sides of the first soft seal body and the second soft seal body are provided with square limiting parts, two ends of the valve cavity are provided with groove bodies corresponding to the limiting parts, the limiting parts are clamped in the corresponding groove bodies, the inner wall of the valve cavity above the groove body is provided with steps corresponding to the first soft sealing body and the second soft sealing body, the outer sides of the upper ends of the first soft sealing body and the second soft sealing body are abutted against the steps, arc-shaped grooves are formed in one sides of the first soft sealing body and the second soft sealing body facing the ball body, the shape of the arc-shaped groove corresponds to the shape of the sphere, the upper end and the lower end of the sphere are abutted against the arc-shaped groove, the first soft sealing body and the second soft sealing body are respectively provided with a hole penetrating through the limiting part, and the holes and the valve cavity are coaxially arranged;
the outer side of the valve body is also provided with two pairs of adjusting bolts, the two pairs of adjusting bolts are respectively arranged corresponding to the positions of the first soft sealing body and the second soft sealing body, the inner ends of the two pairs of adjusting bolts extend into the valve cavity, the end parts of the two pairs of adjusting bolts are provided with cushion blocks, the cushion blocks abut against the outer side faces, in contact with the steps, of the first soft sealing body or the second soft sealing body, and the joints of the adjusting bolts and the valve body are also provided with seals;
the hard seal is composed of a first hard seal body and a second hard seal body, both the first hard seal body and the second hard seal body comprise a graphite ring and a metal ring, the inner peripheries of the first hard sealing body and the second hard sealing body are provided with bellmouths corresponding to the shapes of the spheres, the valve cavity is provided with two concave rings which are respectively arranged at the inner sides of the first soft sealing body and the second soft sealing body, the first hard sealing body and the second hard sealing body are respectively movably connected in the concave ring, the metal ring is arranged at one side close to the ball body, the inner circumference of the graphite ring is abutted with the sphere, the inner circumference of the metal ring keeps a distance with the sphere, and a plurality of groups of springs are arranged between the first soft sealing body and the first hard sealing body and between the second soft sealing body and the second hard sealing body so as to keep the soft sealing body to press the hard sealing body and enable the hard sealing body to be tightly attached to the outer side of the ball body.
2. The high-safety high-temperature-resistant double-seal ball valve according to claim 1, characterized in that: the valve rod comprises an upper valve rod and a lower valve rod, the upper valve rod penetrates out of the valve body from the top of the valve cavity, sealing and filling materials are arranged at the joint of the valve body and the upper valve rod, and the lower valve rod is rotatably connected to the bottom of the valve cavity.
3. The high-safety high-temperature-resistant double-seal ball valve as claimed in claim 2, wherein: the upper end and the lower end of the ball body keep a distance with the top and the bottom of the valve cavity, and the outer side wall of the concave ring is in arc transition connection with the top of the valve cavity.
4. A high-safety high-temperature-resistant double-seal ball valve according to claim 3, characterized in that: the valve body is composed of an upper valve body and a lower valve body.
5. The high-safety high-temperature-resistant double-seal ball valve as claimed in claim 4, wherein: the upper valve body and the lower valve body are welded into a whole.
6. The high-safety high-temperature-resistant double-seal ball valve as claimed in claim 4, wherein: the upper valve body and the lower valve body are respectively provided with a connecting part, the upper valve body and the lower valve body are connected into a whole through a fixing bolt, and a sealing gasket is arranged at the connecting part of the upper valve body and the lower valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122106685.6U CN216009615U (en) | 2021-09-02 | 2021-09-02 | High-safety high-temperature-resistant double-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122106685.6U CN216009615U (en) | 2021-09-02 | 2021-09-02 | High-safety high-temperature-resistant double-sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216009615U true CN216009615U (en) | 2022-03-11 |
Family
ID=80532438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122106685.6U Active CN216009615U (en) | 2021-09-02 | 2021-09-02 | High-safety high-temperature-resistant double-sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216009615U (en) |
-
2021
- 2021-09-02 CN CN202122106685.6U patent/CN216009615U/en active Active
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