CN218031542U - Full-bore rubber sealing eccentric half-ball valve - Google Patents
Full-bore rubber sealing eccentric half-ball valve Download PDFInfo
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- CN218031542U CN218031542U CN202222190046.7U CN202222190046U CN218031542U CN 218031542 U CN218031542 U CN 218031542U CN 202222190046 U CN202222190046 U CN 202222190046U CN 218031542 U CN218031542 U CN 218031542U
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Abstract
The utility model discloses a full-bore rubber sealing eccentric half-ball valve, which comprises a valve body, a valve core, a valve rod and a valve seat; the valve body is of a straight-through type, and a coaxial through hole for installing the valve rod is arranged at a position corresponding to the surface of the valve body; the valve core is a spherical or hemispherical full-bore valve core, and two ends of the position of a rotating axis of the valve core are respectively provided with a mounting hole for mounting a valve rod; the valve rod penetrates through the mounting hole in the surface of the valve body, a self-lubricating bearing is arranged between the valve rod and the through hole of the valve body, and an O-shaped sealing ring for sealing the through hole is arranged on the circumferential surface of the valve rod; this full latus rectum rubber seal eccentric half ball valve is through increasing self-lubricating bearing at valve rod turned position, and axial spacing position department increases the antifriction pad to reduce the frictional force when the valve rod rotates, thereby reduce the operating torque of ball valve, and through the design to sealed face, reduce its wearing and tearing and reduce and maintain the frequency, thereby reduce use cost.
Description
Technical Field
The utility model relates to the technical field of valves, specifically be a full latus rectum rubber seal eccentric half ball valve.
Background
The ball valve is widely applied to various pipeline systems, the operation torque is large and the manufacturing cost is high in the using process, the main reason is that when the valve core moves, the valve core is impacted by an internal fluid medium and has a certain reverse force for preventing the valve core from rotating, when the internal medium flows, the valve rod and one side of the mounting hole of the valve body bear huge impact force, and the valve rod and the mounting hole have large friction force, so that the torque required by the rotation of the valve core is large;
the sealing performance of the ball valve mainly depends on the sealing performance between the spherical surface of the valve core and the sealing surface of the valve seat, the processing requirements on the spherical surface of the valve core and the sealing surface of the valve seat are high, certain abrasion exists between the spherical surface of the valve core and the sealing surface of the valve seat after the ball valve is used for a period of time, the sealing performance is reduced, the ball valve needs to be detached and maintained in time, and the use cost is high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a full latus rectum rubber seal eccentric half ball valve, through increasing self-lubricating bearing at valve rod turned position, and axial spacing position department increases antifriction pad to frictional force when reducing the valve rod rotation, thereby reduce the operating torque of ball valve, and through the design to sealed face, reduce its wearing and tearing and reduce and maintain the frequency, thereby reduce use cost, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a full-bore rubber sealing eccentric half-ball valve comprises a valve body, a valve core, a valve rod and a valve seat;
the valve body is of a straight-through type, and a coaxial through hole for installing the valve rod is arranged at a position corresponding to the surface of the valve body;
the valve core is a spherical or hemispherical full-bore valve core, and two ends of the position of a rotating axis of the valve core are respectively provided with a mounting hole for mounting a valve rod;
the valve rod penetrates through the mounting hole in the surface of the valve body, a self-lubricating bearing is arranged between the valve rod and the through hole of the valve body, and an O-shaped sealing ring for sealing the through hole is arranged on the circumferential surface of the valve rod; an anti-friction pad is arranged between the shaft end or the shaft shoulder of the valve rod and the component for limiting the axial movement of the valve rod.
As a preferred technical scheme of the utility model, the surface of the valve core is coaxially provided with an annular rubber sealing ring and an adjusting pressure plate, the adjusting pressure plate is connected with the valve core through a bolt, and the rubber sealing ring is pressed on the sealing surface position by the adjusting pressure plate and the valve core together;
when the valve body is in a cut-off state, the valve core presses the rubber sealing ring on the sealing surface of the valve seat to form sealing.
As a preferred technical scheme of the utility model, the gyration axis of case is L with the center axis interval of valve body, and L ≠ 0.
As a preferred technical scheme of the utility model, the through hole department of valve body one side sets up the end cover of sealed usefulness, be provided with the antifriction pad between the inner wall of end cover and the tip of valve rod.
As a preferred technical scheme of the utility model, the through hole department of valve body opposite side sets up with packing and the gland that is used for sealing, the valve rod is provided with the shaft shoulder for the locking in packing position, be provided with the antifriction pad between shaft shoulder and the gland.
As an optimal technical scheme of the utility model, rubber seal's cross-section is T shape, adjusting press plate and case correspond the face apart from being provided with the recess that is used for holding rubber seal horizontal arm, and when changing the case and adjusting press plate crimping degree, adjusting press plate and case can extrude rubber seal's vertical wall to change its maximum circumference diameter.
Compared with the prior art, the beneficial effects of the utility model are that: this full latus rectum rubber seal eccentric half ball valve is through increasing self-lubricating bearing in valve rod department, reduce the periphery frictional force that the valve rod rotated the in-process, and increase the antifriction pad in axle head and shaft shoulder position, adopt the antifriction pad of self-lubricating material preparation, effectively reduce the frictional force of axle head, thereby reduce the operating torque of valve, and sealed face position adopts adjusting plate to adjust rubber seal, thereby when using for a long time and having wearing and tearing, convenient adjustment, in order to satisfy with the leakproofness, and the maintenance cost is reduced.
Drawings
FIG. 1 is a vertical cross-sectional view of the present invention;
fig. 2 is a horizontal sectional view of the present invention;
FIG. 3 is a schematic view of the valve cartridge of the present invention;
FIG. 4 is an enlarged view of the position A of the present invention;
FIG. 5 is an enlarged view of the position B of the present invention;
FIG. 6 is an enlarged view of the position C of the present invention;
fig. 7 is an enlarged view of the position D of the present invention.
In the figure: 1. a valve body; 101. an end cap; 2. a valve core; 3. a valve stem; 301. a self-lubricating bearing; 302. an anti-friction pad; 303. an O-shaped sealing ring; 4. adjusting the pressing plate; 5. a rubber seal ring; 6. a valve seat; 7. and (7) a packing gland.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a full-bore rubber sealing eccentric half-ball valve comprises a valve body 1, a valve core 2, a valve rod 3 and a valve seat 6;
the valve body 1 is in a straight-through type, and a coaxial through hole for installing the valve rod 3 is arranged at a position corresponding to the surface of the valve body 1;
the valve core 2 is a spherical or hemispherical full-bore valve core, and two ends of the rotary axis position of the valve core 2 are respectively provided with a mounting hole for mounting the valve rod 3;
the valve rod 3 penetrates through the mounting hole in the surface of the valve body 1, a self-lubricating bearing 301 is arranged between the valve rod 3 and the through hole of the valve body 1, and an O-shaped sealing ring 303 used for sealing the through hole is arranged on the circumferential surface of the valve rod 3; an anti-friction pad 302 is arranged between the shaft end or the shaft shoulder of the valve rod 3 and the component for limiting the axial movement;
the self-lubricating bearing 301 and the antifriction pad 302 made of the composite material are used, so that the frictional resistance of the valve rod 3 in the rotating process is effectively reduced, and the operating torque of the valve is reduced.
Referring to fig. 6, the surface of the valve core 2 is coaxially provided with an annular rubber sealing ring 5 and an adjusting pressure plate 4, the adjusting pressure plate 4 is connected with the valve core 2 through a bolt, and the rubber sealing ring 5 is pressed on a sealing surface by the adjusting pressure plate 4 and the valve core 2 together;
when the valve body 1 is in a cut-off state, the valve core 2 presses the rubber sealing ring 5 on the sealing surface of the valve seat 6 to form sealing.
Referring to fig. 1, the distance between the rotation axis of the valve core 2 and the central axis of the valve body 1 is L, and L is not equal to 0;
the requirement of reducing abrasion between the sealing surface of the valve core 2 and the sealing surface of the valve body 1 in the opening or closing process of the valve is met through the eccentrically arranged valve core 2.
Referring to fig. 2 and 5, a sealing end cap 101 is provided at a through hole at one side of the valve body 1, and an anti-friction pad 302 is provided between an inner wall of the end cap 101 and an end of the valve stem 3.
Referring to fig. 2, 4 and 7, a packing and a packing gland 7 for sealing are arranged at a through hole at the other side of the valve body 1, a shaft shoulder for stopping is arranged at the packing position of the valve rod 3, and an anti-wear pad 302 is arranged between the shaft shoulder and the packing gland 7.
Referring to fig. 6, the cross section of the rubber seal ring 5 is T-shaped, a groove for accommodating a horizontal arm of the rubber seal ring 5 is arranged between the corresponding surfaces of the adjusting pressure plate 4 and the valve core 2, and when the pressing degree of the valve core 2 and the adjusting pressure plate 4 is changed, the adjusting pressure plate 4 and the valve core 2 can press the vertical wall of the rubber seal ring 5 to change the maximum circumferential diameter thereof.
Taking a hemispherical valve as an example, the straight-through valve body 1 is adopted, so that when fluid passes through, the internal resistance is small, and a good energy-saving effect is achieved;
meanwhile, the valve rod 3 is provided with a self-lubricating bearing made of a material, so that the valve rod has the advantages of corrosion resistance, impact resistance, small abrasion and high temperature resistance, is suitable for heavy-load and low-speed use scenes, and simultaneously, the antifriction pad 302 is a low friction coefficient made of a composite material and has an annular structure with self-lubricating performance, and acts on the position of the shaft end or the shaft shoulder and the like of the valve rod 3, which bear axial load, so that the functions of lubrication and friction reduction are achieved.
Meanwhile, the valve seat 6 is connected with the valve body 1 through a bolt, the adjusting pressure plate 4 is connected with the valve core 2 through a bolt, the deformation quantity of the rubber sealing ring 5 is changed by adjusting the screwing degree of the bolt, namely, the pressure of the adjusting pressure plate 4 on the rubber sealing ring 5 is adjusted, so that the overlapping quantity of the rubber sealing ring and the valve seat 6 is changed, and when the valve is closed, the rubber sealing ring 5 is extruded by the valve seat 6 and deforms, so that the rubber sealing ring is attached to the surface of the sealing surface of the valve seat 6 to form sealing;
after long-term use, the rubber sealing ring 5 has certain abrasion, the pressing force of the adjusting pressure plate 4 is adjusted, the deformation quantity of the vertical wall of the rubber sealing ring 5 is increased, the abraded area is made up, and therefore the sealing performance of the rubber sealing ring is guaranteed.
Meanwhile, when the valve core 2 is installed, by means of eccentric installation, for example, taking L =10mm for a half ball valve with a flow path of 1200mm, when the valve core 2 is rotated to be opened, after the valve core is rotated from being completely closed, the positive pressure between the rubber sealing ring 5 and the valve seat 6 is instantly reduced and is continuously reduced until the positive pressure is completely separated, so that the friction force is reduced, and the abrasion is reduced.
Meanwhile, the valve seat 6 and the valve body 1 are designed in a split mode, when the valve seat 6 is abraded, only the valve seat 6 needs to be maintained, the valve body 1 does not need to be maintained, the use cost is reduced, in a general use process, the valve seat 6 is made of metal materials, the abrasion resistance of the valve seat is higher than that of the rubber sealing ring 5, after the valve seat is used for a long time, the sealing requirement can be met by adjusting the adjusting pressing plate 4, and the rubber sealing ring 5 can be replaced when the rubber sealing ring 5 is abraded seriously, and the maintenance cost is low.
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 (6)
1. The utility model provides a full latus rectum rubber seal eccentric half ball valve, includes valve body (1), case (2), valve rod (3) and disk seat (6), its characterized in that:
the valve body (1) is of a straight-through type, and a coaxial through hole for installing the valve rod (3) is arranged at a position corresponding to the surface of the valve body (1);
the valve core (2) is a spherical or hemispherical full-bore valve core, and two ends of the rotary axis position of the valve core (2) are respectively provided with a mounting hole for mounting the valve rod (3);
the valve rod (3) penetrates through the mounting hole in the surface of the valve body (1), a self-lubricating bearing (301) is arranged between the valve rod and the through hole of the valve body (1), and an O-shaped sealing ring (303) used for sealing the through hole is arranged on the circumferential surface of the valve rod (3); and a wear-reducing pad (302) is arranged between the shaft end or the shaft shoulder of the valve rod (3) and the component for limiting the axial movement of the valve rod.
2. The full-bore rubber sealing eccentric half-ball valve according to claim 1, wherein: the surface of the valve core (2) is coaxially provided with an annular rubber sealing ring (5) and an adjusting pressure plate (4), the adjusting pressure plate (4) is connected with the valve core (2) through a bolt, and the rubber sealing ring (5) is pressed on a sealing surface by the adjusting pressure plate (4) and the valve core (2);
when the valve body (1) is in a cut-off state, the valve core (2) presses the rubber sealing ring (5) on the sealing surface of the valve seat (6) to form sealing.
3. The full-bore rubber sealing eccentric half-ball valve according to claim 1, wherein: the distance between the rotary axis of the valve core (2) and the central axis of the valve body (1) is L, and L is not equal to 0.
4. The full-bore rubber sealing eccentric half-ball valve according to claim 1, wherein: an end cover (101) for sealing is arranged at a through hole on one side of the valve body (1), and an anti-friction pad (302) is arranged between the inner wall of the end cover (101) and the end part of the valve rod (3).
5. The full-bore rubber sealing eccentric half-ball valve according to claim 4, wherein: the valve is characterized in that a through hole at the other side of the valve body (1) is provided with a packing and a packing gland (7) for sealing, a shaft shoulder for stopping is arranged at the packing position of the valve rod (3), and an antifriction pad (302) is arranged between the shaft shoulder and the packing gland (7).
6. The full-bore rubber sealing eccentric half-ball valve according to claim 2, wherein: the section of the rubber sealing ring (5) is T-shaped, a groove for accommodating a horizontal arm of the rubber sealing ring (5) is arranged between corresponding surfaces of the adjusting pressure plate (4) and the valve core (2), and when the pressing degree of the valve core (2) and the adjusting pressure plate (4) is changed, the adjusting pressure plate (4) and the valve core (2) can extrude the vertical wall of the rubber sealing ring (5) so as to change the maximum circumferential diameter of the valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190046.7U CN218031542U (en) | 2022-08-19 | 2022-08-19 | Full-bore rubber sealing eccentric half-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222190046.7U CN218031542U (en) | 2022-08-19 | 2022-08-19 | Full-bore rubber sealing eccentric half-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218031542U true CN218031542U (en) | 2022-12-13 |
Family
ID=84349068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222190046.7U Active CN218031542U (en) | 2022-08-19 | 2022-08-19 | Full-bore rubber sealing eccentric half-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218031542U (en) |
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2022
- 2022-08-19 CN CN202222190046.7U patent/CN218031542U/en active Active
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