CN210240637U - Anti-leakage ball valve structure - Google Patents
Anti-leakage ball valve structure Download PDFInfo
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- CN210240637U CN210240637U CN201921152144.3U CN201921152144U CN210240637U CN 210240637 U CN210240637 U CN 210240637U CN 201921152144 U CN201921152144 U CN 201921152144U CN 210240637 U CN210240637 U CN 210240637U
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Abstract
The utility model relates to a prevent leaking ball valve structure, which comprises a valve body, the valve ball, the valve rod, the valve body includes two bilateral symmetry's half valve bodies, two half valve bodies are through multiunit fastener fixed connection after the butt joint, be provided with first seal groove and second seal groove on every half valve body's the butt joint face, when two half valve bodies butt joint, two first seal groove concatenations form first seal chamber, two second seal groove concatenations form the sealed chamber of second, extrusion mounting has first sealing strip in the first seal chamber, extrusion mounting has the second sealing strip in the sealed chamber of second, the middle part of valve rod is provided with the first recess of cover in first sealing strip and the second recess of cover in the second sealing strip, a set of floating valve seat subassembly is respectively installed at the two that lie in the valve ball in the valve body. The beneficial effects are that: firstly, reduced the used mould of valve body production, reduced the required mould cost of valve body production, secondly only have the joint line of two half valve body butt joints, only need a sealed processing mode can.
Description
Technical Field
The utility model relates to a ball valve field especially relates to a prevent leaking ball valve structure.
Background
The ball valve is a valve, wherein a ball body serving as an opening and closing piece is driven by a valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves.
The existing ball valve is generally set into a valve body and a valve cover which are spliced together for sealing and leakage prevention, the valve cover is fixedly connected to one side of the valve body, a sealing ring is installed at the joint of the valve body and the valve cover to prevent fluid from leaking from the joint of the valve cover and the valve body, a packing cavity is arranged on the valve cover, and packing is filled and fixed in the packing cavity to prevent the fluid from leaking from the joint of the valve rod and the valve body. Although the ball valve with the structure has good sealing effect, the structure difference between the valve body and the valve cover is large, and molds need to be designed for manufacturing respectively, so that the mold cost required by ball valve production is greatly increased; and the connecting seam between the valve cover and the valve body and the connecting seam between the valve rod and the valve body need to be sealed, and two different sealing modes are needed for sealing treatment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above problem that prior art exists, provide a prevent leaking ball valve structure.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a leakage-proof ball valve structure comprises a valve body, a valve ball and a valve rod, wherein an inflow channel is arranged at one end of the valve body, an outflow channel is arranged at the other end of the valve body, a fluid channel is arranged in the valve ball, the valve ball is arranged in a valve cavity arranged in the valve body, the bottom of the valve rod is matched with an upper groove arranged at the top of the valve ball, the upper part of the valve rod penetrates through the valve body from bottom to top, the valve body comprises two semi-valve bodies which are bilaterally symmetrical, the two semi-valve bodies are fixedly connected through a plurality of groups of fasteners after being butted, a first sealing groove and a second sealing groove are arranged on the butt joint surface of each semi-valve body, when the two semi-valve bodies are butted, the two first sealing grooves are spliced to form a first sealing cavity, the two second sealing grooves are spliced to form a second sealing cavity, a first sealing strip, the valve comprises a valve body and is characterized in that a first groove sleeved in a first sealing strip and a second groove sleeved in a second sealing strip are arranged in the middle of the valve rod, a group of floating valve seat assemblies are respectively installed at two ends of the valve body, which are positioned on a valve ball, and a sealing surface is formed by the contact surface of the valve ball and the floating valve seat assemblies.
Further, the first sealed cavity is positioned outside the second sealed cavity.
Further, first seal groove is including the first semi-circular ring groove and the first C-shaped groove that are linked together, first semi-circular ring groove and first C-shaped groove mutually perpendicular, second seal groove is including the second semi-circular ring groove and the second C-shaped groove that are linked together, second semi-circular ring groove and second C-shaped groove mutually perpendicular.
Further, the first sealing strip comprises a first circular ring-shaped sealing ring and a first C-shaped sealing strip which are integrally manufactured, the first circular ring-shaped sealing ring is perpendicular to the first C-shaped sealing strip, the second sealing strip comprises a second circular ring-shaped sealing ring and a second C-shaped sealing strip which are integrally manufactured, and the second circular ring-shaped sealing ring is perpendicular to the second C-shaped sealing strip.
Furthermore, the cross sections of the first circular ring-shaped sealing ring, the first C-shaped sealing strip, the second circular ring-shaped sealing ring and the second C-shaped sealing strip are all O-shaped.
Furthermore, the floating valve seat assembly comprises a circular valve seat, three disc spring assemblies connected in series, a first O-shaped sealing ring and a second O-shaped sealing ring, wherein a spherical surface tightly attached to the surface of the valve ball is arranged on one side, close to the valve ball, of the valve seat, a circle of sealing ring groove is formed in the periphery of the valve seat, the first O-shaped sealing ring is installed in the sealing ring groove, the second O-shaped sealing ring and the disc spring assemblies are clamped between the valve seat and the valve body, and the second O-shaped sealing ring is located on the inner side of the disc spring assemblies.
Further, an upper bearing is installed at the top of the valve cavity, and the valve rod is assembled in an inner ring of the upper bearing in an interference mode.
The valve ball is characterized by further comprising a support shaft, the top of the support shaft is matched with a lower groove formed in the bottom of the valve ball, a lower bearing is installed at the bottom of the valve cavity, and the lower portion of the support shaft is assembled in an inner ring of the lower bearing in an interference mode.
The utility model has the advantages that: the valve body is designed into two bilateral symmetry half valve bodies, and the two half valve bodies are fixedly connected after being butted through the plurality of groups of fasteners, so that firstly, a die used for valve body production is reduced, the die cost required for valve body production is reduced, secondly, only two half valve body butt joint connecting seams are needed, and only one sealing treatment mode is needed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is a schematic structural diagram of a valve body in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a butt joint surface of a half valve body in an embodiment of the present invention;
FIG. 5 is a schematic structural view of a valve ball according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a valve stem according to an embodiment of the present invention;
fig. 7 is a front view of a first sealing strip in an embodiment of the invention;
FIG. 8 is a schematic view of the structure in the direction BB in FIG. 7;
fig. 9 is a front view of a second sealing tape in the embodiment of the present invention;
fig. 10 is a schematic diagram of the structure of the CC direction in fig. 9.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 10, a leakage-proof ball valve structure comprises a valve body 1, a valve ball 14 and a valve rod 18, wherein one end of the valve body 1 is provided with an inflow channel 3, the other end of the valve body 1 is provided with an outflow channel 5, the valve ball 14 is provided with a fluid channel 15, the valve ball 14 is installed in a valve cavity 4 arranged inside the valve body, the bottom of the valve rod is matched with an upper groove 16 arranged at the top of the valve ball 14, the upper part of the valve rod penetrates through the valve body from bottom to top, the valve body 1 comprises two bilaterally symmetrical half valve bodies 2, the two half valve bodies 2 are fixedly connected through a plurality of groups of fastening pieces after being butted, a first sealing groove 8 and a second sealing groove 9 are arranged on the butted surface of each half valve body 2, when the two half valve bodies 2 are butted, the two first sealing grooves 8 are spliced to form a first sealing cavity 6, the two second sealing grooves 9 are spliced, the second sealing cavity 7 is provided with a second sealing strip 23 in a squeezing mode, the middle of the valve rod 18 is provided with a first groove 34 sleeved in the first sealing strip 22 and a second groove 35 sleeved in the second sealing strip 23, a group of floating valve seat assemblies 28 are respectively arranged at two ends of the valve ball 14 in the valve body 1, and the contact surfaces of the valve ball 14 and the floating valve seat assemblies 28 form sealing surfaces. The first sealing strip 22 and the second sealing strip 23 form two sealing structures at the splicing seam of the two half valve bodies 2, so that the sealing performance at the splicing seam of the two half valve bodies 2 is ensured.
The first capsule 6 is located outside the second capsule 7.
The first sealing strip 22 comprises a first annular sealing ring 24 and a first C-shaped sealing strip 25 which are integrally manufactured, and the first annular sealing ring 24 is vertical to the first C-shaped sealing strip 25; the second sealing strip 23 comprises a second annular sealing ring 26 and a second C-shaped sealing strip 27 which are integrally formed, and the second annular sealing ring 26 and the second C-shaped sealing strip 27 are perpendicular to each other.
The cross sections of the first circular ring-shaped sealing ring 24, the first C-shaped sealing strip 25, the second circular ring-shaped sealing ring 26 and the second C-shaped sealing strip 27 are all O-shaped.
The floating valve seat assembly 28 comprises a circular valve seat 29, three disc spring assemblies 32, a first O-shaped sealing ring 31 and a second O-shaped sealing ring 33, wherein the disc spring assemblies 32, the first O-shaped sealing ring 31 and the second O-shaped sealing ring 33 are connected in series, one side, close to the valve ball 14, of the valve seat 29 is provided with a spherical surface tightly attached to the surface of the valve ball 14, the periphery of the valve seat 29 is provided with a circle of sealing ring groove 30, the first O-shaped sealing ring 31 is installed in the sealing ring groove 30, the second O-shaped sealing ring 33 and the disc spring assemblies 32 are clamped between the valve seat 29 and the half valve body 2, and the second O-. The disc spring assembly 32 applies pressure to the valve seat 29 in a direction toward the valve ball 14, so that the valve seat 29 is tightly attached to the surface of the valve ball 14 to ensure that the valve ball 14 still achieves sealing effect in case of abrasion. The first O-ring 31 and the second O-ring 33 are arranged to avoid fluid flow in the gap between the valve seat 29 and the valve body half 2.
The top of the valve cavity 4 is provided with an upper bearing 19, and the valve rod 18 is arranged in the inner ring of the upper bearing 19 in an interference fit mode. The provision of the upper bearing 19 improves the stability and smoothness of the valve stem 18 when rotated.
The valve cavity 4 is characterized by further comprising a support shaft 21, the top of the support shaft 21 is matched with the lower groove 17 arranged at the bottom of the valve ball 14, the bottom of the valve cavity 4 is provided with a lower bearing 20, and the lower portion of the support shaft 21 is in interference fit with the inner ring of the lower bearing 20. The support shaft 21 and the lower bearing 0 are provided to provide support to the bottom of the valve ball 14 and prevent the valve ball 14 from bouncing in the vertical direction.
The valve body is designed into two bilateral symmetry half valve bodies, and the two half valve bodies are fixedly connected after being butted through the plurality of groups of fasteners, so that firstly, a die used for valve body production is reduced, the die cost required for valve body production is reduced, secondly, only two half valve body butt joint connecting seams are needed, and only one sealing treatment mode is needed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a prevent leaking ball valve structure, includes valve body, valve ball, valve rod, one end of valve body is provided with the inflow passageway, and another of valve body is provided with the outflow passageway, be provided with fluid passage in the valve ball, the valve ball is installed and is set up in the inside valve pocket of valve body, the bottom of valve rod cooperatees with the last recess that sets up in the valve ball top, upwards pass valve body, its characterized in that from the lower of the upper portion of valve rod: the valve body includes two bilateral symmetry's half valve bodies, and two half valve bodies are through multiunit fastener fixed connection after the butt joint, are provided with first seal groove and second seal groove on every half valve body's the butt joint face, and when two half valve bodies butt joint, two first seal groove concatenations form first sealed chamber, and two second seal groove concatenations form second sealed chamber, extrusion mounting has first sealing strip in the first sealed chamber, extrusion mounting has the second sealing strip in the second sealed chamber, the middle part of valve rod is provided with the first recess of cover in first sealing strip and the second recess of cover in the second sealing strip, respectively install a set of floating valve seat subassembly in the two of valve ball in the valve body, the valve ball forms sealed face with the contact surface of floating valve seat subassembly.
2. A leak-resistant ball valve structure, as set forth in claim 1, wherein: the first sealed cavity is positioned outside the second sealed cavity.
3. A leak-resistant ball valve structure, as set forth in claim 1, wherein: the first sealing groove comprises a first semicircular groove and a first C-shaped groove which are communicated, the first semicircular groove is perpendicular to the first C-shaped groove, the second sealing groove comprises a second semicircular groove and a second C-shaped groove which are communicated, and the second semicircular groove is perpendicular to the second C-shaped groove.
4. A leak-resistant ball valve structure, as set forth in claim 1, wherein: the first sealing strip comprises a first circular ring-shaped sealing ring and a first C-shaped sealing strip which are integrally manufactured, the first circular ring-shaped sealing ring is perpendicular to the first C-shaped sealing strip, the second sealing strip comprises a second circular ring-shaped sealing ring and a second C-shaped sealing strip which are integrally manufactured, and the second circular ring-shaped sealing ring is perpendicular to the second C-shaped sealing strip.
5. A leak-resistant ball valve structure, as set forth in claim 4, wherein: the cross sections of the first circular ring-shaped sealing ring, the first C-shaped sealing strip, the second circular ring-shaped sealing ring and the second C-shaped sealing strip are all O-shaped.
6. A leak-resistant ball valve structure, as set forth in claim 1, wherein: the floating valve seat assembly comprises a circular valve seat, three disc spring combinations connected in series, a first O-shaped sealing ring and a second O-shaped sealing ring, wherein one side, close to a valve ball, of the valve seat is provided with a spherical surface tightly attached to the surface of the valve ball, a circle of sealing ring groove is formed in the periphery of the valve seat, the first O-shaped sealing ring is installed in the sealing ring groove, the second O-shaped sealing ring and the disc spring combinations are clamped between the valve seat and the valve body, and the second O-shaped sealing ring is located on the inner side of the disc spring combinations.
7. A leak-resistant ball valve structure, as set forth in claim 1, wherein: an upper bearing is installed at the top of the valve cavity, and the valve rod is assembled in an inner ring of the upper bearing in an interference mode.
8. A leak-resistant ball valve structure, as set forth in claim 1, wherein: the valve ball is characterized by further comprising a supporting shaft, the top of the supporting shaft is matched with a lower groove formed in the bottom of the valve ball, a lower bearing is installed at the bottom of the valve cavity, and the lower portion of the supporting shaft is in interference fit with an inner ring of the lower bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921152144.3U CN210240637U (en) | 2019-07-22 | 2019-07-22 | Anti-leakage ball valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921152144.3U CN210240637U (en) | 2019-07-22 | 2019-07-22 | Anti-leakage ball valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240637U true CN210240637U (en) | 2020-04-03 |
Family
ID=69992232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921152144.3U Active CN210240637U (en) | 2019-07-22 | 2019-07-22 | Anti-leakage ball valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240637U (en) |
-
2019
- 2019-07-22 CN CN201921152144.3U patent/CN210240637U/en active Active
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