CN110778740A - Double-scraper ring surface valve core and ball valve - Google Patents
Double-scraper ring surface valve core and ball valve Download PDFInfo
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- CN110778740A CN110778740A CN201911193001.1A CN201911193001A CN110778740A CN 110778740 A CN110778740 A CN 110778740A CN 201911193001 A CN201911193001 A CN 201911193001A CN 110778740 A CN110778740 A CN 110778740A
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- sealing ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0684—Packings on the plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
Abstract
The invention discloses a double-scraper ring-surface valve core, which comprises a ball core body, a full-open sealing ring, a full-close sealing ring and a support shaft, wherein the ball core body is provided with a material passage which penetrates through the ball core body, the full-open sealing ring and the full-close sealing ring are protruded out of the surface of the ball core body, the full-open sealing ring is arranged at the passage opening and is arranged in a full-open sealing ring, the axis of the full-close sealing ring is vertical to and intersected with the axis of the full-open sealing ring, the full-close sealing ring is a partition surface, the sealing surface of the full-open sealing ring and the sealing surface of the full-close sealing ring are on the same spherical surface, the outer wall surface of the full-open sealing ring, the inner wall surface of the full-open sealing ring, the outer wall surface of the full-close sealing ring and the inner wall surface of the full-close sealing ring are truncated conical surfaces, the double-scraper annular valve core and the ball valve provided by the invention have long service life.
Description
Technical Field
The invention relates to the field of valves, in particular to a double-scraper annular valve core and a ball valve.
Background
Pipelines for conveying liquid, gas and solid mixed media in the industrial fields of petroleum, chemical industry, electric power, metallurgy, building materials and the like generally need to be adjusted and shut by using a valve, and a ball valve is one of common valves.
As shown in fig. 1 and 2, in the conventional ball valve, a material channel 2 for material to flow through is provided in a ball core body 1, the material channel 2 penetrates through two opposite sides of the ball core body 1 and forms a channel opening, the ball core body 1 is installed in a valve body 3, valve seats 4 adapted to the ball core body 1 are provided at two opposite ends of the valve body 3, the valve seats 4 at the two ends are provided with valve seat channels, which are an upstream valve seat channel 41 and a downstream valve seat channel 42, respectively, a valve seat sealing surface 43 for being matched with a sealing surface of the ball core body 1 is provided on the valve seat 4, the material flows from the upstream valve seat channel 41 into the downstream valve seat channel 42 through the material channel 2, the conveyed material is usually a medium with solids, and the conventional ball valve mainly has the following.
When the ball core body 1 rotates, materials adhered to the sealing surface of the ball core body 1 and the sealing surface 43 of the valve seat are easy to scratch the sealing surface of the ball core body 1 and the sealing surface 43 of the valve seat, and can leak when the valve is turned off, even a small opening phenomenon occurs, the small opening phenomenon has long scouring time and serious abrasion; when the valve is at little aperture (just opening or being about to close at the ball valve promptly), the flow area of material is little, and the material velocity of flow is big this moment, and the material that flows at a high speed all erodees valve seat 4 and ball core body 1 seriously, and above-mentioned two kinds of circumstances all can seriously influence ball valve life.
Disclosure of Invention
The invention aims to provide a double-scraper annular valve core, a ball valve and a ball valve, which can easily scrape materials adhered to a sealing surface of a ball core body and a sealing surface of a valve seat, reduce scratches, prolong the service life, increase the flow area of the valve in a small opening degree, reduce the scouring of the valve seat and the ball core body and prolong the service life of the ball valve.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention discloses a double-scraper ring-surface valve core, which comprises a ball core body, a full-open sealing ring, a full-close sealing ring and a support shaft, wherein the ball core body is rotatably arranged in a valve cavity and is provided with a material channel, the material channel penetrates through the ball core body and forms a channel opening on the surface of the ball core body, the full-open sealing ring and the full-close sealing ring are both arranged on the surface of the ball core body and are both outwards protruded, the full-open sealing ring is provided with a full-open sealing ring sealing surface, a full-open sealing ring inner wall surface and a full-open sealing ring outer wall surface, the full-open sealing ring is arranged at the channel opening, the channel opening is arranged in the inner ring of the full-open sealing ring sealing surface, and the full-open sealing ring is coaxial with the material channel, the axial line of the full-closed sealing ring is perpendicular to and intersected with the axial line of the full-open sealing ring, the surface of the ball core body in the inner ring of the sealing surface of the full-closed sealing ring is a partition surface, the sealing surface of the full-open sealing ring and the sealing surface of the full-closed sealing ring are both cambered surfaces and are on the same spherical surface, the outer wall surface of the full-open sealing ring and the inner wall surface of the full-open sealing ring are respectively on 2 conical surfaces which take the spherical center of the spherical surface where the sealing surface of the full-open sealing ring is located as a vertex and are coaxial with the full-open sealing ring, the outer wall surface of the full-closed sealing ring and the inner wall surface of the full-closed sealing ring are respectively on 2 conical surfaces which take the spherical center of the sealing surface of the full-closed sealing ring as a vertex and are coaxial with the full-open sealing ring, and the full-, the full-closed sealing ring and the partition surface are matched to cut off the communication between the upstream valve seat channel and the downstream valve seat channel when the ball valve is fully closed, the middle parts of two opposite sides of the ball core body respectively extend outwards to form the supporting shafts, the supporting shafts on two sides of the ball core body are used as rotating shafts of the ball core body and are perpendicular to the plane where the axis of the full-open sealing ring and the axis of the full-closed sealing ring are located, and one of the supporting shafts is provided with a valve rod connecting groove.
The invention has the beneficial effects that: when the ball valve is in a partially opened state, materials flow from the upstream valve seat channel to the downstream valve seat channel through the valve cavity from the surface of the ball core body, and at the moment, the flowing materials can automatically clean the valve cavity and cannot be deposited in the valve cavity for a long time; when the ball valve is partially opened, a plurality of material channels are additionally arranged between the outer surface of the ball core body and the valve cavity, the flowing speed of materials is reduced, and the scouring of the materials is reduced, wherein the size of the flow area is determined by the smaller value of the opening area formed by the edge of the sealing surface of the fully-opened sealing ring and the edge of the sealing surface of the fully-closed sealing ring and the edge of the sealing surface of the valve seat and the opening area formed by the sealing surface of the valve seat and the surface of the ball core body, the opening area formed by the sealing surface of the valve seat and the surface of the ball core body is improved by the inner wall surface and the outer wall surface of the fully-opened sealing ring and the inner wall surface and the outer wall surface of the; part of flowing materials can be attached to the sealing surface of the full-open sealing ring, the sealing surface of the full-closed sealing ring and the sealing surface of the valve seat, when the ball core rotates, the contact surfaces of the inner wall surface and the outer wall surface of the full-open sealing ring and the sealing surface of the valve seat are always vertical, the double-scraper function is realized, the materials adhered to the surface of the sealing surface of the valve seat can be scraped, the scratch is small, and the service life is long; when the double-scraper ring surface ball core rotates, the sealing surface of the valve seat only generates friction with the sealing surface of the full-open sealing ring and the sealing surface of the full-closed sealing ring, the friction area of the surface of the ball core body is greatly reduced, and the abrasion of the sealing surface of the valve seat is reduced.
Further, the partition surface is an outward convex spherical surface, and the distance from the outward convex spherical surface to the spherical center of the spherical surface where the fully-opened sealing ring sealing surface and the fully-closed sealing ring sealing surface are located is smaller than the radius of the spherical surface where the fully-opened sealing ring sealing surface and the fully-closed sealing ring sealing surface are located.
The beneficial effect of adopting the further scheme is that: thick in the middle of the evagination sphere, thin all around, the material intermediate pressure that comes is carried to upper reaches disk seat passageway is big, pressure is little all around, can improve the intensity of ball case, non-deformable, it is big to turn off the pressure differential, safe and reliable, and the partition surface is the evagination sphere, no edges and corners, when the valve is half-opened, the difficult deposit of material is on partition surface, material flow capacity is strong, erode disk seat and ball core body and reduce and wash everywhere evenly, the valve pocket self-cleaning is effectual, long service life.
Furthermore, the surface of the ball core body is provided with a plane part between the outer wall surface of the full-open sealing ring and the outer wall surface of the full-close sealing ring, the plane part is parallel to the plane where the axis of the full-open sealing ring and the axis of the full-close sealing ring are located, the plane part is arranged on two opposite sides of the ball core body, the support shafts on the two sides of the ball core body are formed by outwards extending the centers of the plane parts, and the distance from the plane parts to the spherical centers of the spherical surfaces where the sealing surfaces of the full-open sealing ring and the sealing surfaces of the full-close sealing ring are located is smaller than the radius of the spherical surfaces where the sealing surfaces of the full-open sealing ring.
The beneficial effect of adopting the further scheme is that: plane portion is parallel with material flow direction, can reduce the blockking that flows to the material in the valve pocket, and the material can not pile up at plane portion, and material flow capacity is strong, and the valve pocket is automatically cleaned effectually.
Furthermore, the surface of the ball core body between the outer wall surface of the fully-opened sealing ring and the outer wall surface of the fully-closed sealing ring is composed of a spherical surface part and the plane part, the spherical surface part and the convex spherical surface are on the same spherical surface, and the spherical center of the spherical surface where the spherical surface part and the convex spherical surface are located is coincided with the spherical center of the spherical surface where the sealing surface of the fully-opened sealing ring and the sealing surface of the fully-closed sealing ring are located.
The beneficial effect of adopting the further scheme is that: the strength of the ball core body is high, the ball core body is not easy to deform, the turn-off pressure difference is large, and the ball core is safe and reliable; when the valve is half opened, the newly added material channel of the toroidal ball core has strong flow capacity, and the scouring of the valve seat and the ball core is reduced and uniform; the medium is difficult for the deposit on the surface of ball core body, and valve pocket self-cleaning's is effectual, and all places on ball core body surface except that full open sealing ring seal face and full closed sealing ring seal face all not with the sealed face contact friction of disk seat, and the friction area is little, and the wearing and tearing of disk seat seal face are little, ball valve long service life.
Furthermore, the channel opening is a round opening, and the front and the back of the material channel are equal in diameter.
The beneficial effect of adopting the further scheme is that: reduce the scouring and abrasion of the flowing materials to the channel openings and the material channels.
Furthermore, the number of the fully-opened sealing rings and the number of the fully-closed sealing rings are 2, 2 of the fully-opened sealing rings are arranged at the passage openings at the two ends of the material channel relatively, the axes of the 2 fully-opened sealing rings are overlapped, 2 of the fully-closed sealing rings are arranged at the two opposite sides of the ball core body relatively, and the axes of the 2 of the fully-closed sealing rings are overlapped;
when the ball valve is fully opened, the 2 fully-opened sealing rings respectively block the communication between the upstream valve seat passage and the downstream valve seat passage and the valve cavity;
when the ball valve is completely closed, the 2 completely closed sealing rings are matched with the blocking surfaces in the completely closed sealing rings to respectively cut off the outlet of the upstream valve seat channel and the inlet of the downstream valve seat channel from the valve cavity.
The beneficial effect of adopting the further scheme is that: the strength is higher, non-deformable, and more safe and reliable, the valve can two-way shutoff.
The invention also discloses a ball valve, which comprises a valve body, an upstream valve seat channel, a downstream valve seat channel and the double-scraper toroidal ball core, wherein the valve body is hollow, the hollow part of the inner cavity of the valve body is a valve cavity, the outlet of the upstream valve seat channel and the inlet of the downstream valve seat channel are coaxially arranged and are communicated with the valve cavity, the toroidal ball core is arranged in the valve cavity and is rotationally connected with the valve body through the support shaft, and the axes of the outlet of the upstream valve seat channel and the inlet of the downstream valve seat channel both penetrate through the intersection point of the axis of the fully-opened sealing ring and the axis of the fully-closed sealing ring and are on the plane where the axis of the fully-opened sealing ring and the axis of the fully-closed sealing ring are located.
The invention has the beneficial effects that: the valve cavity of the ball valve can be automatically cleaned, the ball valve is less washed by materials when the ball valve is partially opened, the self-abrasion of the sealing surface of the valve seat is less, and the ball valve is safe, reliable and long in service life.
The valve rod penetrates through the valve body and is in transmission connection with the support shaft with the valve rod connecting groove, the valve rod is in rotating connection with the valve body through sealing packing, and the support shaft is in clearance fit with the valve rod.
The beneficial effect of adopting the further scheme is that: the material in the valve cavity erodes the back shaft, can not erode the valve rod, and the back shaft still can play the effect that the effort of pressure differential effect on the anchor ring ball core when supporting the ball valve and turn-off, and reducible valve intracavity material flows the impact to the valve rod, avoids the valve rod slope, influences sealing filler, extension sealing filler life.
Drawings
FIG. 1 is a schematic view of a prior art valve cartridge;
FIG. 2 is a schematic view of a valve body according to the prior art;
FIG. 3 is a perspective view of an embodiment of a dual scraper toroidal core;
FIG. 4 is a side view of an embodiment channel port of a double scraper toroidal core;
FIG. 5 is a side view of an embodiment channel port blocking face of a double scraper toroidal core;
FIG. 6 is a top view of an embodiment of a dual scraper toroidal core;
FIG. 7 is a first vertical bisecting plane sectional view of an embodiment of a dual scraper toroidal core;
FIG. 8 is a second vertical bisecting plane sectional view of an embodiment of a dual scraper toroidal core;
FIG. 9 is one of the schematic views of an embodiment of the ball valve when fully open;
FIG. 10 is a second schematic view of the embodiment of the ball valve when fully open;
FIG. 11 is one of the schematic views of an embodiment of the ball valve fully closed;
FIG. 12 is a second schematic view of the embodiment of the ball valve fully closed;
FIG. 13 is one of the schematic views of an embodiment of the ball valve when partially open;
FIG. 14 is a second schematic view of the embodiment of the ball valve partially open;
FIG. 15 is a schematic view of the media flow of an embodiment of a double blade toroidal core with the core partially open;
FIG. 16 is a schematic illustration of the blade effect of an embodiment of a dual blade toroidal core;
in the figure: 1. a core body; 11. a partition surface; 12. a spherical surface portion; 13. a planar portion; 2. a material channel; 3. a valve body; 31. a valve cavity; 4. a valve seat; 41. an upstream seat channel; 42. a downstream seat channel; 43. a valve seat sealing surface; 5. fully closing the sealing ring; 51. fully closing the sealing surface of the sealing ring; 52. fully closing the inner wall surface of the sealing ring; 53. fully closing the outer wall surface of the sealing ring; 6. fully opening a sealing ring; 61. a sealing surface of the full-open sealing ring; 62. the inner wall surface of the full-open sealing ring; 63. the outer wall surface of the full-open sealing ring; 7. a support shaft; 71. a valve rod connecting groove; 8. a valve stem; 9. a bonded material;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
The embodiment of the double scraper toroidal core disclosed by the invention comprises a ball core body 1, a fully-opened sealing ring 6, a fully-closed sealing ring 5 and a supporting shaft 7, wherein the ball core body 1 can be selected from an existing ball core body 1 with a spherical shape or a non-spherical shape, the ball core body 1 is rotatably arranged in a valve cavity 31, the ball core body 1 is provided with a material channel 2 for material circulation, the material channel 2 penetrates through the ball core body 1 and forms a channel opening on the surface of the ball core body 1, the channel opening is preferably a circular opening, the material channel 2 is preferably a cylindrical channel with two ends penetrating, the fully-opened sealing ring 6 and the fully-closed sealing ring 5 are both arranged on the surface of the ball core body 1 and are both outwards protruded, the fully-opened sealing ring 6 is provided with a fully-opened sealing surface 61, an inner wall surface 62 of the fully-opened sealing ring and an outer wall surface 63 of the fully-opened sealing ring, the fully, The fully-closed sealing ring comprises a fully-opened sealing ring inner wall surface 52 and a fully-closed sealing ring outer wall surface 53, wherein a fully-opened sealing ring 6 is arranged at a channel opening, the channel opening is arranged in an inner ring of a fully-opened sealing ring sealing surface 61, the fully-opened sealing ring 6 is coaxial with a material channel 2, the axis of a fully-closed sealing ring 5 is perpendicular to and intersected with the axis of the fully-opened sealing ring 6, the surface of a ball core body 1 in the inner ring of the fully-closed sealing ring sealing surface 51 is a partition surface 11, the fully-opened sealing ring sealing surface 61 and the fully-closed sealing ring sealing surface 51 are both cambered surfaces and are on the same spherical surface, a fully-opened sealing ring outer wall surface 63 is arranged on a conical surface which takes an outer ring of the fully-opened sealing ring sealing surface 61 as a reference line and takes a spherical center of a spherical surface where the fully-opened sealing ring sealing surface 61 is located as a vertex, a fully, the fully-closed sealing ring outer wall surface 53 is on a conical surface which takes the outer ring of the fully-closed sealing ring sealing surface 51 as a reference line and the sphere center of the spherical surface on which the fully-closed sealing ring sealing surface 51 is positioned as a vertex, the fully-closed sealing ring inner wall surface 52 is on a conical surface which takes the inner ring of the fully-closed sealing ring sealing surface 51 as a reference line and the sphere center of the spherical surface on which the fully-closed sealing ring sealing surface 51 is positioned as a vertex, the fully-opened sealing ring outer wall surface 63, the fully-opened sealing ring inner wall surface 62, the fully-closed sealing ring outer wall surface 53 and the fully-closed sealing ring inner wall surface 52 are all truncated conical surfaces, the fully-opened sealing ring 6 is used for cutting off the communication between the upstream valve seat channel 41 and/or the downstream valve seat channel 42 and the valve cavity 31 when the ball valve is fully opened, the fully-closed sealing ring 5 and the closing surface 11 are matched for cutting off the communication between the, the support shafts 7 on two sides of the ball core body 1 are used as the rotating shaft of the ball core body 1, the support shafts 7 are perpendicular to the plane where the axis of the fully-opened sealing ring 6 and the axis of the fully-closed sealing ring 5 are located, the support shaft 7 on the upper side of the ball core body 1 is provided with a valve rod connecting groove 71, and the end part of the valve rod 8 is inserted into the valve rod connecting groove 71 and is in clearance fit with the support shafts 7.
The fully-opened sealing ring 6, the fully-closed sealing ring 5 and the ball core body 1 can be integrally formed, the fully-opened sealing ring 6 and the fully-closed sealing ring 5 can be fixedly connected to the surface of the ball core body 1 in a welding mode, and are preferably integrally formed, so that the strength of the fully-opened sealing ring 6 and the fully-closed sealing ring 5 can be improved, and the processing and manufacturing are facilitated.
The fully-opened sealing ring 6 and the fully-closed sealing ring 5 protrude out of the surface of the ball core body 1, when the ball valve is fully opened, the valve cavity 31 is isolated by the cooperation of the fully-opened sealing ring 6 and the sealing surface of the valve seat 4, when the ball valve is fully closed, the flow channel of the upstream valve seat 4 and the flow channel of the downstream valve seat 4 are cut off by the fully-closed sealing ring 5 and the isolating surface 11, when the ball valve is in a partially opened state, the materials flow from the upstream valve seat channel 41 to the downstream valve seat channel 42 through the material channel 2, and part of the materials flow from the upstream valve seat channel 41 to the downstream valve seat channel 42 through the valve cavity 31 by the surface of the ball core body 1, at the moment, the flowing materials can; when the ball valve is partially opened, a plurality of material channels 2 are additionally arranged between the outer surface of the ball core body 1 and the valve cavity 31, the flowing speed of materials is reduced, and the scouring of the materials is reduced, the size of the flow area is determined by the smaller value of the opening area formed by the edge of the sealing surface 61 of the full-open sealing ring, the edge of the sealing surface 51 of the full-close sealing ring and the edge of the sealing surface 43 of the valve seat and the opening area formed by the sealing surface 43 of the valve seat and the surface of the ball core body 1, the inner wall surface and the outer wall surface of the full-open sealing ring 6 and the inner wall surface and the outer wall surface of the full-close sealing ring 5 are both truncated conical surfaces, so that the opening area formed by the sealing surface 43 of the valve seat; part of flowing materials can be attached to the fully-opened sealing ring sealing surface 61, the fully-closed sealing ring sealing surface 51 and the valve seat sealing surface 43, when the ball core rotates, the inner wall surface and the outer wall surface of the fully-opened sealing ring 6 and the inner wall surface and the outer wall surface of the fully-closed sealing ring 5 are always perpendicular to the edge of the valve seat sealing surface 43, the double-scraper function is achieved, the materials 9 adhered to the surface of the valve seat sealing surface 43 can be scraped, the scratch is small, and the service life is long; when the double-scraper ring surface ball core rotates, the valve seat sealing surface 43 only generates friction with the fully-opened sealing ring sealing surface 61 and the fully-closed sealing ring sealing surface 51, the friction area of the surface of the ball core body 1 is greatly reduced, and the abrasion of the valve seat sealing surface 43 is reduced.
As a further scheme of the above-mentioned embodiment of the double scraper toroidal core, the blocking surface 11 is an outward convex spherical surface, and the distance from the outward convex spherical surface to the spherical center of the spherical surface where the fully-open sealing ring sealing surface 61 and the fully-closed sealing ring sealing surface 51 are located is smaller than the radius of the spherical surface where the fully-open sealing ring sealing surface 61 and the fully-closed sealing ring sealing surface 51 are located.
As a further scheme of the embodiment of the double-scraper toroidal valve core, the surface of the ball core body 1 is provided with the plane part 13 between the fully-open sealing ring outer wall surface 63 and the fully-closed sealing ring outer wall surface 53, the plane part 13 is parallel to the plane where the axis of the fully-open sealing ring 6 and the axis of the fully-closed sealing ring 5 are located, the two opposite sides of the ball core body 1 are provided with the plane parts 13, the support shafts 7 at the two sides of the ball core body 1 are formed by outwards extending the centers of the plane parts 13, and the distance from the plane parts 13 to the spherical centers of the spherical surfaces where the fully-open sealing ring sealing surface 61 and the fully-closed sealing ring sealing surface 51 are located is smaller than the radius of the spherical surfaces where.
As a further scheme of the embodiment of the double-scraper toroidal core, the surface of the core body 1 between the outer wall surface 63 of the fully-opened sealing ring and the outer wall surface 53 of the fully-closed sealing ring is composed of a spherical surface part 12 and a plane part 13, the spherical surface part 12 and the convex spherical surface are on the same spherical surface, and the spherical center of the spherical surface where the spherical surface part 12 and the convex spherical surface are located is superposed with the spherical center of the spherical surface where the sealing surface 61 of the fully-opened sealing ring and the sealing surface 51 of the fully-closed sealing ring are located.
As a further scheme of the embodiment of the double-scraper toroidal valve core, each of the fully-opened sealing rings 6 and the fully-closed sealing rings 5 comprises 2 fully-opened sealing rings 6, 2 fully-opened sealing rings 6 are arranged at the channel openings at the two ends of the material channel 2 relatively, the axes of the 2 fully-opened sealing rings 6 are overlapped, 2 fully-closed sealing rings 5 are arranged at the two opposite sides of the ball core body 1 relatively, and the axes of the 2 fully-closed sealing rings 5 are overlapped;
when the ball valve is fully opened, the 2 fully-opened sealing rings 6 respectively block the communication between the upstream valve seat passage 41 and the downstream valve seat passage 42 and the valve cavity 31;
when the ball valve is fully closed, 2 fully-closed seal rings 5 are fitted to the blocking surface 11 to block the valve cavity 31 from the outlet of the upstream valve seat passage 41 and the inlet of the downstream valve seat passage 42, respectively.
Specifically, the full-open sealing ring 6 comprises a first sealing ring and a second sealing ring, the full-close sealing ring 5 comprises a third sealing ring and a fourth sealing ring, the axes of the first sealing ring and the second sealing ring are coincident, the first sealing ring and the second sealing ring are respectively arranged at the passage openings at two opposite sides of the ball core body 1, the passage openings at two opposite sides of the ball core body 1 are respectively arranged in the inner ring of the sealing surface of the first sealing ring and the inner ring of the sealing surface of the second sealing ring, the axes of the third sealing ring and the fourth sealing ring are coincident, the third sealing ring and the fourth sealing ring are respectively arranged at two opposite sides of the ball core body 1, the axis of the first sealing ring is perpendicular to and intersected with the axis of the third sealing ring, the first sealing ring, the third sealing ring, the second sealing ring and the fourth sealing ring are sequentially arranged along the circumference of the ball core body 1, the sealing surfaces of the first sealing ring, the second sealing ring, the third sealing, the supporting shaft 7 is perpendicular to the plane where the axis of the first sealing ring and the axis of the third sealing ring are located and penetrates through the spherical centers of spherical surfaces where the sealing surfaces of the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are located, the first sealing ring and the third sealing ring are matched with the outlet of the upstream valve seat channel 41, and the second sealing ring and the fourth sealing ring are matched with the inlet of the downstream valve seat channel 42;
the inner wall surface of the first sealing ring is on a conical surface which takes the edge of the inner ring of the sealing surface of the first sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the first sealing ring is located as a vertex, the outer wall surface of the first sealing ring is on a conical surface which takes the edge of the outer ring of the sealing surface of the first sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the first sealing ring is located as a vertex, the inner wall surface of the second sealing ring is on a conical surface which takes the edge of the inner ring of the sealing surface of the second sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the second sealing ring is located as a vertex, the outer wall surface of the second sealing ring is on a conical surface which takes the edge of the outer ring of the sealing surface of the second sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the third sealing ring is located as, the outer wall surface of the third sealing ring is arranged on a conical surface which takes the edge of the outer ring of the sealing surface of the third sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the third sealing ring is arranged as a vertex, the inner wall surface of the fourth sealing ring is arranged on a conical surface which takes the edge of the inner ring of the sealing surface of the fourth sealing ring as a reference line and the sphere center of the spherical surface where the sealing surface of the fourth sealing ring is arranged as a vertex, and the outer wall surface of the fourth sealing ring is arranged on a conical surface which takes the edge of the outer ring of the sealing surface of the fourth sealing ring as a reference line and the;
when the ball valve is fully opened, the first sealing ring separates the outlet of the upstream valve seat passage 41 from the valve cavity 31, and the second sealing ring separates the inlet of the downstream valve seat passage 42 from the valve cavity 31;
when the ball valve is fully closed, the third seal ring and the blocking surface 11 therein block the outlet of the upstream valve seat passage 41 from the valve chamber 31, and the fourth seal ring and the blocking surface 11 therein block the inlet of the downstream valve seat passage 42 from the valve chamber 31.
The invention also discloses a ball valve, which comprises a valve body 3, an upstream valve seat channel 41, a downstream valve seat channel 42 and the double-scraper toroidal ball core, wherein the valve body 3 is hollow, the hollow part in the inner cavity of the valve body 3 is a valve cavity 31, the outlet of the upstream valve seat channel 41 and the inlet of the downstream valve seat channel 42 are coaxially arranged and are communicated with the valve cavity 31, the double-scraper toroidal ball core is arranged in the valve cavity 31 and is rotationally connected with the valve body 3 through a support shaft 7, and the axes of the outlet of the upstream valve seat channel 41 and the inlet of the downstream valve seat channel 42 both penetrate through the intersection point of the axis of the fully-opened sealing ring 6 and the axis of the fully-closed sealing ring 5 and are on the plane where the axis of the fully-.
The valve rod 8 is in transmission connection with a supporting shaft 7 with a valve rod connecting groove 71 on the upper side of the ball core body 1 after penetrating through the valve body 3, the valve rod 8 is in rotation connection with the valve body 3 through sealing filler, the supporting shaft 7 is in clearance fit with the valve rod 8, the supporting shafts 7 on the upper side and the lower side of the ball core body 1 are respectively in rotation connection with the upper side and the lower side of the valve body 3, the supporting shaft 7 can be connected with the valve body 3 through a bearing, the supporting shaft 7 can also be in clearance fit with the valve body 3, the valve rod 8 is not in the valve cavity 31, the supporting shaft 7 can support acting force of pressure difference generated when the ball valve is turned off on.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. A double scraper ring surface valve core is characterized in that: including ball core body (1), full open sealing ring (6), full cut-off sealing ring (5) and back shaft (7), rotatable the installing in valve pocket (31) of ball core body (1), ball core body (1) has material passageway (2), material passageway (2) run through ball core body (1) and ball core body (1) surface forms the passway, full open sealing ring (6) and full cut-off sealing ring (5) all set up in the surface of ball core body (1) and the both all outwards bulge, full open sealing ring (6) have full open sealing ring sealing face (61), full open sealing ring internal face (62) and full cut-off sealing ring outer wall face (63), full cut-off sealing ring (5) have full cut-off sealing ring sealing face (51), full cut-off sealing ring internal face (52) and full cut-off sealing ring outer wall face (53), the full-open sealing ring (6) is arranged at the passage opening and is arranged in an inner ring of a full-open sealing ring sealing surface (61), the full-open sealing ring (6) is coaxial with the material passage (2), the axis of the full-close sealing ring (5) is perpendicular to and intersected with the axis of the full-open sealing ring (6), the surface of the ball core body (1) in the inner ring of the full-close sealing ring sealing surface (51) is a partition surface (11), the full-open sealing ring sealing surface (61) and the full-close sealing ring sealing surface (51) are both cambered surfaces and are on the same spherical surface, an outer wall surface (63) of the full-open sealing ring and an inner wall surface (62) of the full-open sealing ring are respectively arranged on 2 conical surfaces which take the spherical center of the full-open sealing surface (61) as a vertex and are coaxial with the full-open sealing ring (6), and an outer wall surface (63) of the full-close sealing ring and the full-open sealing ring (62) are respectively arranged on the inner wall surface The spherical center of the spherical surface where the sealing ring sealing surface (61) is located is a vertex and is on 2 conical surfaces coaxial with the fully-closed sealing ring (6), the fully-opened sealing ring (6) is used for isolating the communication between an upstream valve seat channel (41) and/or a downstream valve seat channel (42) and the valve cavity (31) when the ball valve is fully opened, the fully-closed sealing ring (5) and the isolating surface (11) are matched for isolating the communication between the upstream valve seat channel (41) and the downstream valve seat channel (42) when the ball valve is fully closed, the middle parts of two opposite sides of the ball core body (1) respectively extend outwards to form the supporting shaft (7), the supporting shaft (7) on two sides of the ball core body (1) is used as a rotating shaft of the ball core body (1), and the supporting shaft (7) is perpendicular to the plane where the axis of the fully-opened sealing ring (6) and the axis of the fully-closed sealing ring (5) are located, one of the support shafts (7) has a stem coupling groove (71).
2. The dual scraper annulus spool of claim 1 wherein: the partition surface (11) is an outward convex spherical surface, and the distance from the outward convex spherical surface to the spherical center of the spherical surface where the fully-opened sealing ring sealing surface (61) and the fully-closed sealing ring sealing surface (51) are located is smaller than the radius of the spherical surface where the fully-opened sealing ring sealing surface (61) and the fully-closed sealing ring sealing surface (51) are located.
3. The dual scraper annulus spool of claim 1 wherein: the spherical core comprises a spherical core body (1), wherein a plane part (13) is arranged on the surface of the spherical core body between a full-open sealing ring outer wall surface (63) and a full-closed sealing ring outer wall surface (53), the plane part (13) is parallel to the plane where the axis of a full-open sealing ring (6) and the axis of a full-closed sealing ring (5) are located, the plane part (13) is arranged on each of two opposite sides of the spherical core body (1), the support shafts (7) on the two sides of the spherical core body (1) are formed by outwards extending the center of the plane part (13), and the distance from the plane part (13) to the spherical centers of the spherical surfaces where the full-open sealing ring sealing surface (61) and the full-closed sealing ring sealing surface (51) are located is smaller than the radius of the spherical surfaces where the full-open sealing ring sealing surface (61) and the.
4. The dual scraper annulus spool of claim 1 wherein: the surface of the ball core body (1) between the fully-opened sealing ring outer wall surface (63) and the fully-closed sealing ring outer wall surface (53) is composed of a spherical surface part (12) and a plane part (13), the spherical surface part (12) and the convex spherical surface are on the same spherical surface, and the spherical center of the spherical surface where the spherical surface part (12) and the convex spherical surface are located is superposed with the spherical center of the spherical surface where the fully-opened sealing ring sealing surface (61) and the fully-closed sealing ring sealing surface (51) are located.
5. The dual scraper annulus spool of claim 4 wherein: the channel opening is a round opening, and the front and the back of the material channel (2) are equal in diameter.
6. The dual scraper toroidal core according to any of claims 1 to 7, wherein: the fully-opened sealing rings (21) and the fully-closed sealing rings (22) respectively comprise 2, the 2 fully-opened sealing rings (21) are oppositely arranged at the passage openings at the two ends of the material passage (2), the axes of the 2 fully-opened sealing rings (21) are overlapped, the 2 fully-closed sealing rings (22) are oppositely arranged at the two opposite sides of the ball core body (1), and the axes of the 2 fully-closed sealing rings (22) are overlapped;
when the ball valve is fully opened, the 2 fully-opened sealing rings (6) respectively block the communication between the upstream valve seat passage (41) and the downstream valve seat passage (42) and the valve cavity (31);
when the ball valve is completely closed, 2 completely closed sealing rings are matched with the blocking surfaces in the completely closed sealing rings to respectively cut off the outlet of the upstream valve seat channel (41) and the inlet of the downstream valve seat channel (42) from the valve cavity (31).
7. A ball valve, characterized in that: comprising a valve body (3), an upstream seat channel (41), a downstream seat channel (42) and a double scraper toroidal core according to any of claims 1-6, the valve body (3) is hollow, the hollow part of the inner cavity of the valve body (3) is the valve cavity (31), the outlet of the upstream valve seat passage (41) and the inlet of the downstream valve seat passage (42) are coaxially arranged and are communicated with the valve cavity (31), the double-scraper toroidal valve core is arranged in the valve cavity (31) and is rotationally connected with the valve body (3) through the supporting shaft (7), the axes of the outlet of the upstream valve seat channel (41) and the inlet of the downstream valve seat channel (42) both pass through the intersection point of the axis of the fully-opened sealing ring (6) and the axis of the fully-closed sealing ring (5) and are on the plane of the axis of the fully-opened sealing ring (6) and the axis of the fully-closed sealing ring (5).
8. The ball valve according to claim 7, wherein: still include valve rod (8), valve rod (8) pass behind valve body (3) with have valve rod spread groove (71) back shaft (7) transmission is connected, valve rod (8) through sealing packing with valve body (3) rotate and are connected, back shaft (7) with valve rod (8) clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911193001.1A CN110778740A (en) | 2019-11-28 | 2019-11-28 | Double-scraper ring surface valve core and ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911193001.1A CN110778740A (en) | 2019-11-28 | 2019-11-28 | Double-scraper ring surface valve core and ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110778740A true CN110778740A (en) | 2020-02-11 |
Family
ID=69393153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911193001.1A Withdrawn CN110778740A (en) | 2019-11-28 | 2019-11-28 | Double-scraper ring surface valve core and ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110778740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283383A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Rotary ball core descaling mechanism |
| CN112628421A (en) * | 2020-12-24 | 2021-04-09 | 牡丹江石油工具有限责任公司 | Plug valve for petroleum and natural gas drilling |
| CN112796804A (en) * | 2021-01-19 | 2021-05-14 | 李磊 | Combined valve body device of coal mine hydraulic support |
-
2019
- 2019-11-28 CN CN201911193001.1A patent/CN110778740A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283383A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Rotary ball core descaling mechanism |
| CN112628421A (en) * | 2020-12-24 | 2021-04-09 | 牡丹江石油工具有限责任公司 | Plug valve for petroleum and natural gas drilling |
| CN112628421B (en) * | 2020-12-24 | 2022-09-16 | 牡丹江石油工具有限责任公司 | Plug valve for petroleum and natural gas drilling |
| CN112796804A (en) * | 2021-01-19 | 2021-05-14 | 李磊 | Combined valve body device of coal mine hydraulic support |
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Application publication date: 20200211 |
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