CN113266684A - Ball valve with movable valve plate and using method - Google Patents
Ball valve with movable valve plate and using method Download PDFInfo
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- CN113266684A CN113266684A CN202110760858.8A CN202110760858A CN113266684A CN 113266684 A CN113266684 A CN 113266684A CN 202110760858 A CN202110760858 A CN 202110760858A CN 113266684 A CN113266684 A CN 113266684A
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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
- 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
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/204—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the plugs or parts of the plugs mechanically pressing the seals against the housing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
A method for using a ball valve with a movable valve plate comprises the following steps: the high-pressure fluid in the two valve plates and the control cavity in the two valve plate grooves I is discharged through the three-way ball valve by switching the three-way ball valve, and the ball valve is opened by rotating the control rod; rotating the ball core to a closed state, wherein high-pressure fluid in a right valve body pipeline passes through a right connecting pipe, a right port and a lower port of the three-way ball valve, a valve core connecting pipe and a control cavity entering two valve plates of the ball core I and two valve plate grooves I to push a left valve plate to move towards a left valve body, and the ball valve is closed; single movable valve plate ball core: switching the three-way ball valve, discharging pressure of high-pressure fluid in the valve plate and the control cavity in the valve plate groove cavity through the three-way ball valve, rotating the control rod, and opening the ball valve; when the ball core is rotated to a closed state, high-pressure fluid of a fluid pipeline of the right valve body passes through the right connecting pipe, the right port and the lower port of the three-way ball valve, the valve core connecting pipe and the control cavity entering the valve plate of the ball core II and the valve plate groove II to push the valve plate to move towards the left valve body, and the ball valve is completely closed.
Description
Technical Field
The invention relates to a ball valve with a movable valve plate and a use method, which are applied to the field of fluid and are used for on-off of pipeline fluid.
Background
In the conventional ball valve structure, when the ball valve is opened and closed, the ball core is tightly attached to the sealing surface of one side of the ball valve due to the thrust generated by the pressure of one side of the ball valve on the pressure of the ball core, as shown in fig. 14, especially, the ball valve with a large diameter or high pressure is very stressed when being opened and closed, so that the ball valve is difficult to open and close. Under the effect of internal pressure, the ball core and the sealing surface are accelerated in abrasion, so that the reliable service life of the ball valve is shortened. The surface smoothness of the ball core directly influences the sealing effect, and particularly, the machining difficulty of the smoothness and the roundness of the ball body with a large drift diameter is greatly ensured, and the corresponding machining cost is difficult to reduce.
Any injury and the out-of-tolerance on the surface of the ball body can influence the sealing effect of the whole ball valve, and when the ball valve is subjected to severe temperature change, the valve body and the ball core of the ball valve are different in structure and material, different in thermal expansion coefficient, and capable of causing the mutual fit clearance to change greatly, so that the sealing effect is changed. The energy loss due to the deterioration of the sealing performance of the ball valve is an immeasurable loss. The existing structure is difficult to open and close, and huge property loss is caused in use. The common phenomenon of the existing valve is that the valve in the oil tank area of the wharf turns eighty circles to be a buckle, and one hundred buckles are needed to close the valve.
Disclosure of Invention
In view of the conditions and the defects of the prior art, the invention provides the ball valve with the movable valve plate and the use method thereof. The ball core and the valve body are not directly sealed, when the valve is opened, the valve plate on the ball core is separated from the sealing surface of the valve body, and the corresponding sealing surface forms a friction-free state, so that the service life of the ball valve is longer.
The technical scheme adopted by the invention is as follows: a ball valve with a movable valve plate comprises a left valve body, a right valve body and a control rod, and further comprises a single movable valve plate ball core, a double movable valve plate ball core, a sealing ring, a copper sleeve, a pin shaft, an adjusting screw, a three-way ball valve, a left connecting pipe, a right connecting pipe and a valve core connecting pipe;
the ball core of the double-movable valve plate is arranged in the cavity of the left valve body, one end of the control rod is arranged in a strip-shaped control rod groove I of the ball core I, a round convex surface of the control rod is arranged in a round groove I of the ball core I, a sealing ring is arranged in a sealing groove I in the round groove I, a vertical pipe channel II of the control rod is arranged corresponding to the vertical pipe channel I of the ball core I, the pin shaft is arranged in a pin shaft hole, and the lower end of the pin shaft is positioned in a copper sleeve in a blind hole of a copper sleeve of the left valve body by an adjusting screw;
or
The ball core of the single movable valve plate is arranged in the cavity of the left valve body, one end of the control rod is arranged in a control rod groove II with a strip shape of the ball core II, a round convex surface of the control rod is arranged in a round groove II with the ball core II, a sealing ring is arranged in a sealing groove II in the round groove II, a vertical pipe II of the control rod is arranged corresponding to the vertical pipe II of the ball core II, the pin shaft is arranged in a pin shaft hole, and the lower end of the pin shaft is positioned in a copper sleeve in a blind hole of a copper sleeve of the left valve body by an adjusting screw;
the right valve body and the left valve body are fixed together, and the spherical surface of the spherical core of the double-movable valve plate or the spherical core of the single-movable valve plate is in clearance fit with the valve cavities of the right valve body and the left valve body;
the left port of the three-way ball valve is connected with the left connecting pipe orifice of the left valve body through a left connecting pipe, the right port of the three-way ball valve is connected with the right connecting pipe orifice of the right valve body through a right connecting pipe, and the lower port of the three-way ball valve is connected with the valve core pipe orifice of the left valve body through a valve core connecting pipe;
the fluid passage of the ball core of the double-movable valve plate is as follows:
when high-pressure fluid exists in the right valve body fluid pipeline, the three-way ball valve is switched, so that the lower port of the three-way ball valve is communicated with the right port, the lower port is not communicated with the left end, the right valve body high-pressure fluid pipeline is communicated with a cavity between two valve plates of the ball core I and the inner surfaces of two valve plate grooves I sequentially through a right connecting pipe, the right port of the three-way ball valve, the lower port, a valve core connecting pipe, a transverse pipeline II, a vertical pipeline I, two transverse pipelines I and the ball core I, and the ball valve is completely closed;
switching the three-way ball valve to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port of the three-way ball valve to be not communicated with the right end, a left valve body fluid pipeline is communicated with a cavity between two valve plates of the ball core I and the inner surfaces of two valve plate grooves I sequentially through a left connecting pipe, the left port of the three-way ball valve, the lower port, a valve core connecting pipe, a transverse pipeline II, a vertical pipeline I and two transverse pipelines I, rotating a control rod for 90 degrees, the fluid channel I of the ball core I is communicated with fluid pipelines on two sides of the left valve body and the right valve body, and the ball valve is completely opened;
the fluid passage of the ball core of the single movable valve plate is as follows:
when the right valve body fluid pipeline is high-pressure fluid, the three-way ball valve is switched, the lower end of the three-way ball valve is communicated with the right port, the lower end of the three-way ball valve is not communicated with the left end, the right valve body high-pressure fluid pipeline is communicated with a cavity between a valve plate of the ball core II and the inner surface of the valve plate groove II through a right connecting pipe, a right port of the three-way ball valve, a lower port, a valve core connecting pipe, a transverse pipeline II, a vertical pipeline II and a transverse pipeline II in sequence, and the ball valve is completely closed;
and switching the three-way ball valve to enable the lower end of the three-way ball valve to be communicated with the left port and the lower end of the three-way ball valve to be not communicated with the right end, enabling the fluid pipeline of the left valve body to be communicated with the cavity between the valve plate and the inner surface of the valve plate groove through the left connecting pipe, the left port of the three-way ball valve, the lower port, the valve core connecting pipe, the transverse pipeline II, the vertical pipeline II and the transverse pipeline II in sequence, rotating the control rod by 90 degrees, and completely opening the ball valve.
A use method of a ball valve with a movable valve plate comprises the following steps:
the use method of the ball core of the double-movable valve plate comprises the following steps:
1. opening the ball valve;
when high-pressure fluid exists in a right valve body fluid pipeline, the three-way ball valve is switched to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port is not communicated with the right end, the high-pressure fluid in a cavity between two valve plates of the ball core I and the inner surfaces of two valve plate grooves I sequentially passes through the two transverse pipelines I, the vertical pipeline II, the transverse pipelines II, the valve core pipe orifices, the valve core connecting pipes, the lower port of the three-way ball valve, the left port, the left connecting pipe and the left connecting pipe orifices to discharge the pressure in the control cavity, and because the pressure in the control cavity is discharged, the two valve plates are returned into the two valve plate grooves I by the resultant force received by the two valve plates, the cambered surfaces of the two valve plates are lower than the surface of the ball core I, the valve plates are not in contact with the valve;
2. closing the ball valve;
the angle of a control rod is controlled to be 90 degrees by rotating a handle, a three-way ball valve is switched, so that the lower port of the three-way ball valve is communicated with a right port, the lower port is not communicated with a left port, high-pressure fluid of a right valve body pipeline sequentially passes through a right connecting pipe orifice, a right connecting pipe, a right port of the three-way ball valve, the lower port, a valve core connecting pipe, a valve core pipe orifice, a transverse pipeline II, a vertical pipeline I and two transverse pipelines I into a cavity between two valve plates of a ball core I and the inner surfaces of two valve plate grooves I, the high-pressure fluid pushes the left valve plate to move towards a left valve body sealing surface, the right valve plate is in a floating state, the left valve plate is pushed by fluid, the annular sealing surface of the left valve plate is tightly attached to the sealing surface of the left valve body, reliable sealing is achieved, and the ball valve is completely closed;
when the left valve body fluid pipeline is high-pressure fluid, the opening and closing principles of the ball valve are the same;
the use method of the single movable valve plate ball core comprises the following steps:
1. opening the ball valve;
when high-pressure fluid is in the right valve body fluid pipeline, the three-way ball valve is cut, the lower port of the three-way ball valve is communicated with the left port, the lower port is not communicated with the right port, the high-pressure fluid in a cavity between the valve plate and the inner surface of the valve plate groove sequentially passes through the transverse pipeline II, the vertical pipeline II, the transverse pipeline II, the valve core pipe orifice, the valve core connecting pipe, the lower port of the three-way ball valve, the left port, the left connecting pipe and the left connecting pipe orifice, the pressure in the control cavity is discharged, the valve plate is retreated into the valve plate groove I due to the pressure in the control cavity of the valve core, the cambered surface of the valve plate is lower than the surface of the ball core II, the valve plate is not in contact friction with the valve body, the angle of the control rod is 90 degrees, the fluid channel II of the ball core is communicated with the fluid pipelines on the left valve body and the right valve body, and the ball valve is completely opened;
2. closing the ball valve;
the angle of the control rod is controlled to be 90 degrees through rotating the handle, the three-way ball valve is switched, the lower port of the three-way ball valve is communicated with the right port, the lower port is not communicated with the left port, high-pressure fluid of a right valve body fluid pipeline sequentially passes through the right connecting pipe orifice, the right connecting pipe, the right port of the three-way ball valve, the lower port, the valve core connecting pipe, the valve core pipe orifice, the transverse pipeline II, the vertical pipeline II, the transverse pipeline II enters a cavity between the valve plate of the ball core II and the inner surface of the valve plate groove II, the high-pressure fluid pushes the valve plate to move towards the sealing surface of the valve body left, the valve plate is.
The invention has the beneficial effects that:
the sealing mode of the ball valve in the closed state is a sealing mode that the spherical surface of the valve body is matched with the cambered surface of the ball core valve plate, the ball core controls the action of the ball core valve plate by the pressure of the fluid in the original pipeline, and the complete linear sealing is realized by matching the ball core valve plate with the valve body, so that the reliable sealing of the ball valve is ensured.
The mode when this ball valve open mode is that ball core and valve body are not direct seal mode, and ball core valve plate has suitable clearance with the sealed face of valve body, and the valve is when opening, and the valve plate on the ball core leaves with the sealed face of valve body, and corresponding sealed face forms no friction state for the valve easily opens and easily closes, therefore ball valve life is longer, thereby has reduced use and cost of maintenance.
The ball valve is not affected by temperature change when opened or closed, the smoothness required for processing the sealing surface of the valve plate and the valve body is not high, and the form and position tolerance deviation can be adjusted during assembly, so that special processing equipment is not needed.
The outer ring of the cambered surface of the valve plate is provided with an annular reinforcing surface, the annular reinforcing surface is turned firstly, then is subjected to repair welding and then is turned, the wear resistance and the corrosion resistance are enhanced, the sealing surfaces of the left valve body and the right valve body corresponding to the valve plate also need to be turned firstly, then is subjected to repair welding and then is turned, and finally the two sealing surfaces are mutually ground, so that the two sealing surfaces are matched without a gap. Because the unique valve plate moves horizontally and the ball core rotates, the valve plate and the valve body are in a spherical-to-spherical matching structure, and the sealing effect of the valve plate and the valve body is greatly improved compared with a plane-to-plane sealing effect.
The structural design of the exhaust hole and the exhaust inclined hole of the protruding shaft enables the pressure in a cavity between the valve plate and the valve plate groove to enter the cavity through the clearance between the exhaust inclined hole, the exhaust hole, the blind hole of the valve plate and the protruding shaft when the valve plate moves towards the valve plate groove, and the valve plate can conveniently slide on the protruding shaft without hindrance.
The ball valve with the ball core of the double-movable valve plate can be used when a right valve body fluid pipeline is high-pressure fluid or a left valve body fluid pipeline is high-pressure fluid, the opening and closing principles of the ball valve are the same, and the operation actions are opposite.
Drawings
FIG. 1 is an external view of the present invention;
FIG. 2 is a cross-sectional view of the closed configuration of the dual-acting valve plate ball-core ball valve of the present invention;
FIG. 3 is a structural sectional view showing a pressure relief state of the ball valve with a ball core having a double movable valve plate according to the present invention;
FIG. 4 is a cross-sectional view of a closed configuration of a single movable valve plate ball-core ball valve of the present invention;
FIG. 5 is a structural sectional view showing a pressure relief state of the ball valve with a single movable valve plate and a ball core according to the present invention;
FIG. 6 is a schematic view of the construction of the control lever of the present invention;
FIG. 7 is a structural cross-sectional view of a control lever of the present invention;
FIG. 8 is a schematic structural view of a core I of the present invention;
FIG. 9 is a cross-sectional structural view of a core I of the present invention;
FIG. 10 is a cross-sectional structural view of core II of the present invention;
FIG. 11 is a cross-sectional view of the structure of core II of the present invention;
FIG. 12 is a schematic view of the construction of the valve plate of the present invention;
FIG. 13 is a structural cross-sectional view of a valve plate according to the present invention;
fig. 14 is a sectional view of a conventional ball valve structure.
Detailed Description
As shown in figures 1 to 13 of the drawings,
the utility model provides a take ball valve of movable valve plate, includes left valve body 1, right valve body 2 and control lever 3, still includes single movable valve plate ball core 4, two movable valve plate ball cores 5, screw 6, sealing washer 7, copper sheathing 8, round pin axle 9, adjusting screw 10, tee bend ball valve 11, left connecting pipe 12, right connecting pipe 13, case connecting pipe 14.
A valve core pipe orifice 1-1-1 is arranged on the wall of a control rod sleeve 1-1 at the upper end of a left valve body 1, a copper sleeve blind hole 1-2 is arranged at the lower end of the left valve body 1, a left connecting pipe orifice 1-3 is arranged on a fluid pipeline of the left valve body 1, a left valve body sealing surface 1-4 is arranged at the position in the left valve body, which is contacted with a valve plate, a right connecting pipe orifice 2-1 is arranged on the fluid pipeline of the right valve body 2, a right valve body sealing surface 2-2 is arranged at the position in the right valve body, which is contacted with the valve plate,
the lower end of the control rod 3 is a large-diameter cylinder, the upper end of the control rod is a small-diameter cylinder, two corresponding surfaces of the large-diameter cylinder are planes I3-1, a section of vertical pipeline II 3-3 is arranged on a circular convex surface 3-2 of the lower end surface of the large-diameter cylinder, a through transverse pipeline II 3-4 is arranged on the small-diameter cylinder, and the transverse pipeline II 3-4 is communicated with the vertical pipeline II 3-3.
The double-movable valve plate ball core 5 comprises a ball core I5-1, a valve plate 5-2 and a valve plate sealing ring 5-3;
the valve plate 5-2 is a circular plate, one side of the valve plate is an arc surface 5-2-1, the other side of the valve plate is a plane, a circle of protrusions 5-2-2 are arranged along the edge of the plane, a blind hole 5-2-3 is formed in the center of the plane, a circle of sealing groove I5-2-4 is formed in the outer circular surface between the arc surface 5-2-1 and the plane, and an annular sealing surface 5-2-5 is arranged on the outer circular side of the arc surface.
The ball core I5-1 is a spherical body, a communicated fluid channel I5-1-1 is arranged on the corresponding spherical surface of the ball core I5-1, a strip-shaped control rod groove I5-1-2 is arranged on the spherical surface at the upper end of the fluid channel I5-1-1, a circular groove I5-1-3 is arranged in the control rod groove I5-1-2, a vertical pipeline I5-1-4 is arranged at the center in the circular groove I5-1-3, and a circle of sealing groove I5-1-5 is arranged on the groove surface at the periphery of the vertical pipeline I5-1-4;
the spherical surface at the lower end of the fluid channel I5-1-1 is provided with a pin shaft hole I5-1-6 and an adjusting screw hole I5-1-7 which are communicated with each other, the spherical surfaces at the two sides of the fluid channel I5-1-1 are correspondingly provided with a circular valve plate groove I5-1-8 respectively, the centers of the inner surfaces of the two valve plate grooves I5-1-8 are provided with a protruding shaft I5-1-9 respectively, the two protruding shafts I5-1-9 are provided with an exhaust hole I5-1-9-1 and an exhaust inclined hole I5-1-9-2 respectively, the exhaust hole I5-1-9-1 is communicated with the valve plate groove I5-1-8 through the exhaust inclined hole I5-1-9-2, the upper ends of the inner surfaces of the two valve plate grooves I5-1-8 are respectively provided with a transverse pipeline I5-1-10, and the two transverse pipelines I5-1-10 are communicated with a vertical pipeline I5-1-4.
The valve plate grooves I5-1-8 on two sides of the ball core I5-1 are respectively provided with a valve plate 5-2, the projecting shafts I5-1-9 in the two valve plate grooves I5-1-8 are respectively inserted into the blind holes 5-2-3 of the two valve plates 5-2 for clearance fit, the two valve plates 5-2 can horizontally move on the two projecting shafts I5-1-9, the planes of the two valve plates 5-2 are in clearance fit with the inner surfaces of the valve plate grooves I5-1-8 through a circle of projections 5-2-2, the seal grooves 5-2-4 between the walls of the valve plate grooves I5-1-8 and the valve plates 5-2 are respectively provided with a valve plate seal ring 5-3, the vertical pipe I5-1-4 of the ball core I5-1 is respectively provided with the two valve plates 5-2 and the two valve plates 5-2 through two transverse pipes I5-1-10 The inner surfaces of the valve plate grooves I5-1-8 are communicated with each other.
The single-movable valve plate ball core 4 comprises a ball core II 4-1, a valve plate 5-2 and a valve plate sealing ring 5-3;
the ball core II 4-1 is a spherical body, a communicated fluid channel II 4-1-1 is arranged on the corresponding spherical surface of the ball core II 4-1, a strip-shaped control rod groove II 4-1-2 is arranged on the spherical surface at the upper end of the fluid channel II 4-1-1, a circular groove II 4-1-3 is arranged in the control rod groove II 4-1-2, a vertical pipeline II 4-1-4 is arranged at the center in the circular groove II 4-1-3, and a circle of sealing groove II 4-1-5 is arranged on the groove surface at the periphery of the vertical pipeline II 4-1-4;
a pin shaft hole II 4-1-6 and an adjusting screw hole II 4-1-7 which are communicated are arranged on the spherical surface at the lower end of the fluid channel II 4-1-1, a round valve plate groove II 4-1-8 is arranged on the spherical surface at one side of the fluid channel II 4-1-1, a protruding shaft II 4-1-9 is arranged at the center of the inner surface of the valve plate groove II 4-1-8, exhaust holes II 4-1-9-1 and exhaust inclined holes II 4-1-9-2 are respectively arranged on the two protruding shafts II 4-1-9, the exhaust holes II 4-1-9-1 are communicated with the valve plate groove II 4-1-8 through the exhaust inclined holes II 4-1-9-2, a transverse pipeline II 4-1-10 is arranged at the upper end of the inner surface of the valve plate groove II 4-1-8, the transverse pipelines II 4-1-10 are communicated with the vertical pipelines II 4-1-4.
A valve plate 5-2 is arranged in a valve plate groove II 4-1-8 on one side of a ball core II 4-1, a protruding shaft II 4-1-9 in the valve plate groove II 4-1-8 is inserted into a blind hole 5-2-3 of the valve plate 5-2, the valve plate 5-2 is in clearance fit with the protruding shaft II 4-1-9, the valve plate 5-2 can horizontally move on the protruding shaft II 4-1-9, the plane of the valve plate 5-2 is in clearance fit with the inner surface of the valve plate groove II 4-1-8 through a circle of protrusions 5-2-2, and a valve plate sealing ring 5-3 is arranged in a sealing groove 5-2-4 between the wall of the valve plate groove II 4-1-8 and the valve plate 5-2;
the vertical pipeline II 4-1-4 of the ball core II 4-1 is communicated with the cavity between the valve plate 5-2 and the inner surface of the valve plate groove I5-1-8 through the horizontal pipeline II 4-1-10.
The ball core 5 of the double-movable valve plate is arranged in a cavity of a left valve body 1, two parallel planes I3-1 on a large-diameter cylinder of a control rod 3 are arranged in a strip-shaped control rod groove I5-1-2 of the ball core I5-1, a round convex surface 3-2 of the control rod 3 is arranged in a round groove I5-1-3 of the ball core I5-1, a sealing ring 7 is arranged in a sealing groove I5-1-5 in the round groove I5-1-3, a vertical pipeline II 3-3 of the control rod 3 is arranged corresponding to a vertical pipeline I5-1-4 of the ball core I5-1, a sealing ring is respectively arranged in a groove above and below a small-diameter cylinder horizontal pipeline II 3-4, and a handle 3-6 is inserted in a small-diameter cylinder handle hole 3-5;
a pin shaft 9 is placed in a pin shaft hole 5-6 through an adjusting screw hole 5-7, the lower end of the pin shaft 9 is positioned in a copper sleeve 8 in a copper sleeve blind hole 1-2 of the left valve body 1 through the matching of an adjusting screw 10 and the adjusting screw hole 5-7, and the position of the ball core 5 in the left valve body is adjusted through the height position of the adjusting screw 10, so that the center of the ball core 5 is ensured to be coincided with the spherical center of the inner cavity of the left valve body 1;
the right valve body 2 and the left valve body 1 are fixed together through a plurality of inner hexagonal bolts 6, the spherical surface of the spherical core 5 of the double-movable valve plate is in clearance fit with the valve cavities of the right valve body 2 and the left valve body 1, and a sealing ring is arranged between the right valve body 2 and the left valve body 1.
The left port of the three-way ball valve 11 is connected with the left connecting pipe orifice 1-4 of the left valve body 1 through a left connecting pipe 12, the right port of the three-way ball valve 11 is connected with the right connecting pipe orifice 2-1 of the right valve body 2 through a right connecting pipe 13, and the lower port of the three-way ball valve 11 is connected with the valve core pipe orifice 1-1-1 of the left valve body 1 through a valve core connecting pipe 14.
The fluid channel of the ball core 5 of the double-movable valve plate is as follows:
when the fluid pipeline of the right valve body 2 is high-pressure fluid, the three-way ball valve 11 is cut to enable the lower port of the three-way ball valve to be communicated with the right port, the lower port of the three-way ball valve is not communicated with the left end, the fluid pipeline of the right valve body 2 is communicated with a cavity between the transverse pipeline II 3-4, the vertical pipeline II 3-3, the vertical pipeline II 4-1-4, the transverse pipeline II 4-1-10 and the valve plate 5-2 of the ball core II 4-1 and the inner surface of the valve plate groove II 4-1-8 in sequence through the right connecting pipe 13, the right port of the three-way ball valve 11, the lower port, the valve core connecting pipe 14, the transverse pipeline II 3-4, the vertical pipeline II 3-3, the vertical pipeline II 4-1-4, the transverse pipeline II 4-1-10 and the valve plate II 4-1 valve plate 5-2, and the valve plate groove II 4-1-8, the high-pressure fluid resultant force pushes the valve plate to move towards the sealing surface of the left valve body and is tightly attached to the sealing surface, and the ball valve is completely closed;
switching a three-way ball valve 11 to enable the lower end of the three-way ball valve to be communicated with a left port and the lower end of the three-way ball valve to be not communicated with a right end, enabling a fluid pipeline of a left valve body 1 to be communicated with a left connecting pipe 12, the left port and the lower port of the three-way ball valve 11, a valve core connecting pipe 14, a transverse pipeline II 3-4, a vertical pipeline II 3-3, a vertical pipeline II 4-1-4, a transverse pipeline II 4-1-10 and a cavity between a valve plate 5-2 and the inner surface of a valve plate groove 4-1-9 in sequence, discharging high-pressure fluid in a control cavity to the left connecting pipe 12, enabling the valve plate 5-2 to retreat into the valve plate groove, rotating the control rod 3 degrees by a handle 3-6 to achieve 90 degrees, and completely opening the ball valve.
Or the ball core 4 of the single movable valve plate is arranged in the cavity of the left valve body 1, two planes I3-1 of a large-diameter cylinder of the control rod 3 are arranged in a strip-shaped control rod groove II 4-1-2 of the ball core II 4-1, the circular convex surface 3-2 of the control rod 3 is arranged in a circular groove II 4-1-3 of the ball core II 4-1, a sealing ring 7 is arranged in a sealing groove II 4-1-5 in the circular groove II 4-1-3, a vertical pipeline II 6-3 of the control rod 3 is arranged corresponding to a vertical pipeline II 4-1-4 of the ball core II 4, a sealing ring is respectively arranged in an upper groove and a lower groove of a horizontal pipeline II 3-4 of a small-diameter cylinder, and a handle 3-6 is inserted in a handle hole 3-5 of the small-diameter cylinder;
a pin shaft 9 is placed in a pin shaft hole 5-6 through an adjusting screw hole 5-7, and the lower end of the pin shaft 9 is positioned in a copper sleeve 8 in a copper sleeve blind hole 1-2 of the left valve body 1 through the matching of an adjusting screw 10 and the adjusting screw hole 5-7;
the right valve body 2 and the left valve body 1 are fixed together through a plurality of screws 6, the spherical surface of the spherical core 4 of the single movable valve plate is in clearance fit with the valve cavities of the right valve body 2 and the left valve body 1, and a sealing ring is arranged between the right valve body 2 and the left valve body 1.
The left port of the three-way ball valve 11 is connected with a left connecting pipe orifice 1-4 of a left valve body 1 through a left connecting pipe 12, the right port of the three-way ball valve 11 is connected with a right connecting pipe orifice 2-1 of a right valve body 2 through a right connecting pipe 13, and the lower port of the three-way ball valve 11 is connected with a right connecting pipe orifice 2-1 of the right valve body 2 through a valve core connecting pipe 14.
The fluid channel of the single movable valve plate ball core 4 is as follows:
when the fluid pipeline of the right valve body 2 is high-pressure fluid, the three-way ball valve 11 is switched to enable the lower end of the three-way ball valve to be communicated with the right port and the lower end of the three-way ball valve to be blocked, the fluid pipeline of the right valve body 2 is communicated with the left port sequentially through a right connecting pipe 13, the right port of the three-way ball valve 11, the lower port, a valve core connecting pipe 14, a transverse pipeline II 3-4, a vertical pipeline II 3-3, a vertical pipeline II 4-1-4 and a transverse pipeline II 4-1-10, and a cavity between a valve plate 5-2 of a ball core II 4-1 and the inner surface of a valve plate groove II 4-1-8, the valve plate is pushed to move towards the sealing surface of the left valve body by the resultant force of the high-pressure fluid and is tightly attached to the sealing surface, and the ball valve is completely closed;
switching a three-way ball valve 11 to enable the lower end of the three-way ball valve to be communicated with a left port and the lower end of the three-way ball valve to be not communicated with a right end, enabling a fluid pipeline of a left valve body 1 to be communicated with a cavity between a valve plate 5-2 and the inner surface of a valve plate groove sequentially through a left connecting pipe 12, the left port of the three-way ball valve 11, a lower port, a valve core connecting pipe 14, a transverse pipeline II 3-4, a vertical pipeline II 3-3, a vertical pipeline II 4-1-4 and a transverse pipeline II 4-1-10, and enabling the high-pressure fluid in the cavity to be discharged to the left connecting pipe 12, enabling the valve plate 5-2 to retreat into the valve plate groove, rotating a control rod 3 degrees by 90 degrees through a handle 3-6, and completely opening the ball valve.
A use method of a ball valve with a movable valve plate comprises the following steps:
the use method of the ball core 5 of the double-movable valve plate;
1. opening the ball valve, as shown in fig. 3;
when the fluid pipeline of the right valve body 2 has high-pressure fluid, the three-way ball valve 11 is switched to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port is not communicated with the right end, the high-pressure fluid in a cavity between two valve plates 5-2 of the ball core I5-1 and the inner surfaces of two valve plate grooves I5-1-8 sequentially passes through two transverse pipelines I5-1-10, a vertical pipeline I5-1-4, a vertical pipeline II 3-3, a transverse pipeline II 3-4, a valve core pipe orifice 1-1, a valve core connecting pipe 14, the lower port of the three-way ball valve 11, the left port, a left connecting pipe 12 and a left connecting pipe orifice 1-3 to discharge the pressure in the control cavity, and because the pressure in the control cavity is discharged, the resultant force exerted on the two valve plates 5-2 enables the two valve plates 5-2 to return to the two valve plate grooves I5-1-9, the cambered surfaces 5-2-1 of the two valve plates 5-2 are lower than the surface of the ball core I5-1, the valve plates are not in contact with the valve body, the control rod is rotated for 3 degrees to 90 degrees, a fluid channel I5-1-1 of the ball core I5-1 is communicated with fluid pipelines on two sides of the left valve body 1 and the right valve body 2, and the ball valve is completely opened;
2. closing the ball valve, as shown in fig. 2;
the control rod 3 is rotated by an angle of 90 degrees through the handle 3-6, the three-way ball valve 11 is switched, the lower port of the three-way ball valve is communicated with the right port, the lower port is not communicated with the left port, high-pressure fluid in a pipeline of the right valve body 2 sequentially passes through the right connecting pipe orifice 2-1, the right connecting pipe 13, the right port of the three-way ball valve 11, the lower port, the valve core connecting pipe 14, the valve core pipe orifice 1-1-1, the transverse pipeline II 3-4, the vertical pipeline II 3-3, the vertical pipeline I5-1-4 and the two transverse pipelines I5-1-10 to enter a cavity between the two valve plates 5-2 of the ball core I5-1 and the inner surfaces of the two valve plate grooves I5-1, the high-pressure fluid pushes the left valve plate 5-2 to move towards the sealing surface of the left valve body 1, the right valve plate is in a floating state, and the left valve plate 5-2 is pushed by the fluid to combine force, the annular sealing surface 5-2-5 of the left valve plate 5-2 is tightly attached to the sealing surface 1-4 of the left valve body 1, so that reliable sealing is achieved, and the ball valve is completely closed;
when the fluid pipeline of the left valve body 1 is high-pressure fluid, the opening and closing principles of the ball valve are the same, and the operation actions are opposite.
The use method of the single movable valve plate ball core 4 comprises the following steps:
1. opening the ball valve, as shown in fig. 5;
when high-pressure fluid is in the fluid pipeline of the right valve body 2, the three-way ball valve 11 is switched to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port of the three-way ball valve is not communicated with the right port, the high-pressure fluid in the cavity between the valve plate 5-2 and the inner surface of the valve plate groove 4-1-9 sequentially passes through the horizontal pipeline II 4-1-10, the vertical pipeline II 4-1-4, the vertical pipeline II 3-3, the horizontal pipeline II 3-4, the valve core pipe orifice 1-1, the valve core connecting pipe 14, the lower port of the three-way ball valve 11, the left port, the left connecting pipe 12 and the left connecting pipe orifice 1-3 to discharge the pressure in the control cavity, because the pressure in the valve core control cavity is discharged, the left valve plate 5-2 is jointly pushed by the fluid to retreat the valve plate 5-2 into the valve plate groove I5-1-9, the cambered surface 5-2-1 of the valve plate 5-2 is lower than the surface of the ball core II 4-1, the valve plate is not in contact with the valve body, the control rod is rotated by 3 degrees to 90 degrees, the fluid channel II 4-1-1 of the ball core II 4-1 is communicated with the fluid channels on the two sides of the left valve body 1 and the right valve body 2, and the ball valve is completely opened;
2. closing the ball valve, as shown in fig. 4;
the control rod is rotated by an angle of 90 degrees through the handle 3-6, the three-way ball valve 11 is switched, the lower port of the three-way ball valve is communicated with the right port, the lower port is not communicated with the left port, high-pressure fluid of a fluid pipeline of the right valve body 2 sequentially passes through the right connecting pipe orifice 2-1, the right connecting pipe 13, the right port of the three-way ball valve 11, the lower port, the valve core connecting pipe 14, the valve core pipe orifice 1-1, the transverse pipeline II 3-4, the vertical pipeline II 3-3, the vertical pipeline II 4-1-4 and the transverse pipeline II 4-1-10 to enter a cavity between the valve plate 5-2 of the ball core II 4-1 and the inner surface of the valve plate groove II 4-1-8, the high-pressure fluid pushes the valve plate 5-2 to move towards the sealing surface of the left valve body 1, the valve plate 5-2 is pushed by the resultant force of the fluid, and the annular sealing surface 5-2-5 of the valve plate 5 is tightly attached to the sealing surface of the left valve body 1-4, reliable sealing is achieved, and the ball valve is completely closed.
Claims (9)
1. The utility model provides a ball valve of area activity valve plate, includes left valve body (1), right valve body (2) and control lever (3), its characterized in that: the valve also comprises a single-movable valve plate ball core (4), a double-movable valve plate ball core (5), a sealing ring (7), a copper sleeve (8), a pin shaft (9), an adjusting screw (10), a three-way ball valve (11), a left connecting pipe (12), a right connecting pipe (13) and a valve core connecting pipe (14);
the ball core (5) of the double-movable valve plate is arranged in the cavity of the left valve body (1), one end of the control rod (3) is arranged in a strip-shaped control rod groove I (5-1-2) of the ball core I (5-1), the round convex surface (3-2) of the control rod (3) is arranged in a round groove I (5-1-3) of the ball core I (5-1), a sealing ring (7) is arranged in a sealing groove I (5-1-5) in the circular groove I (5-1-3), a vertical pipeline II (3-3) of the control rod (3) is arranged corresponding to the vertical pipeline I (5-1-4) of the ball core I (5-1), the pin shaft (9) is arranged in the pin shaft hole (5-6), and the lower end of the pin shaft (9) is positioned in the copper sleeve (8) in the copper sleeve blind hole (1-2) of the left valve body (1) by the adjusting screw (10);
or
The ball core (4) of the single movable valve plate is arranged in the cavity of the left valve body (1), one end of the control rod (3) is arranged in the strip-shaped control rod groove II (4-1-2) of the ball core II (4-1), the round convex surface (3-2) of the control rod (3) is arranged in the round groove II (4-1-3) of the ball core II (4-1), a sealing ring (7) is arranged in a sealing groove II (4-1-5) in the circular groove II (4-1-3), a vertical pipeline II (6-3) of the control rod (3) is arranged corresponding to the vertical pipeline II (4-1-4) of the ball core II (4), the pin shaft (9) is arranged in the pin shaft hole (5-6), and the lower end of the pin shaft (9) is positioned in the copper sleeve (8) in the copper sleeve blind hole (1-2) of the left valve body (1) by the adjusting screw (10);
the right valve body (2) and the left valve body (1) are fixed together, and the spherical surface of the spherical core (5) of the double-movable valve plate or the spherical core (4) of the single-movable valve plate is in clearance fit with the valve cavities of the right valve body (2) and the left valve body (1);
the left port of the three-way ball valve (11) is connected with a left connecting pipe orifice (1-4) of the left valve body (1) through a left connecting pipe (12), the right port of the three-way ball valve (11) is connected with a right connecting pipe orifice (2-1) of the right valve body (2) through a right connecting pipe (13), and the lower port of the three-way ball valve (11) is connected with a valve core pipe orifice (1-1-1) of the left valve body (1) through a valve core connecting pipe (14);
the fluid channel of the ball core (5) of the double-movable valve plate is as follows:
when high-pressure fluid exists in a fluid pipeline of the right valve body (2), the three-way ball valve (11) is switched to enable the lower port of the three-way ball valve to be communicated with the right port, the lower port of the three-way ball valve is not communicated with the left end, the high-pressure fluid pipeline of the right valve body (2) sequentially passes through a right connecting pipe (13), the right port of the three-way ball valve (11), the lower port, a valve core connecting pipe (14), a transverse pipeline II (3-4), a vertical pipeline II (3-3), a vertical pipeline I (5-1-4), two transverse pipelines I (5-1-10) and cavities between two valve plates (5-2) of a ball core I (5-1) and the inner surfaces of two valve plate grooves I (5-1-8) to be communicated, and the ball valve is completely closed;
the three-way ball valve (11) is switched to ensure that the lower port of the three-way ball valve is communicated with the left port and the lower port is not communicated with the right end, a fluid pipeline of the left valve body (1) sequentially passes through a left connecting pipe (12), the left port of the three-way ball valve (11), the lower port and a valve core connecting pipe (14), the horizontal pipeline II (3-4), the vertical pipeline II (3-3), the vertical pipeline I (5-1-4), the two horizontal pipelines I (5-1-10), the ball core I (5-1), the two valve plates (5-2) and the cavities between the inner surfaces of the two valve plate grooves I (5-1-8) are communicated, the angle of the rotary control rod (3) is 90 degrees, the fluid channel I (5-1-1) of the ball core I (5-1) is communicated with the fluid pipelines on the two sides of the left valve body (1) and the right valve body (2), and the ball valve is completely opened;
the fluid channel of the single movable valve plate ball core (4) is as follows:
when the fluid pipeline of the right valve body (2) is high-pressure fluid, the three-way ball valve (11) is switched to enable the lower end of the three-way ball valve to be communicated with the right port and the lower end of the three-way ball valve to be not communicated with the left port, the high-pressure fluid pipeline of the right valve body (2) is communicated with the cavity between the valve plate (5-2) of the ball core II (4-1-8) and the valve plate groove II (4-1-8) through a right connecting pipe (13), the right port and the lower port of the three-way ball valve (11), a transverse pipeline II (3-4), a vertical pipeline II (3-3), a vertical pipeline II (4-1-4) and a transverse pipeline II (4-1-10) in sequence, and the ball valve is completely closed;
and switching the three-way ball valve (11) to enable the lower end of the three-way ball valve to be communicated with the left port and the lower end of the three-way ball valve to be not communicated with the right end, wherein a fluid pipeline of the left valve body (1) sequentially passes through the left connecting pipe (12), the left port and the lower port of the three-way ball valve (11), the valve core connecting pipe (14), the transverse pipeline II (3-4), the vertical pipeline II (3-3), the vertical pipeline II (4-1-4), the transverse pipeline II (4-1-10) and a cavity between the valve plate (5-2) and the inner surface of the valve plate groove (4-1-9), rotating the control rod (3) by an angle of 90 degrees, and completely opening the ball valve.
2. A ball valve with a movable valve plate according to claim 1, wherein:
a valve core pipe orifice (1-1-1) is arranged on the wall of a control rod sleeve (1-1) at the upper end of the left valve body (1), a copper sleeve blind hole (1-2) is arranged at the lower end of the left valve body (1), and a left connecting pipe orifice (1-3) is arranged on a fluid pipeline of the left valve body (1);
and a right connecting pipe orifice (2-1) is arranged on the fluid pipeline of the right valve body (2).
3. A ball valve with a movable valve plate according to claim 1, wherein:
the lower end of the control rod (3) is a large-diameter cylinder, the upper end of the control rod is a small-diameter cylinder, two corresponding surfaces of the large-diameter cylinder are planes I (3-1), a section of vertical pipeline II (3-3) is arranged on a circular convex surface (3-2) of the lower end surface of the large-diameter cylinder, a through transverse pipeline II (3-4) is arranged on the small-diameter cylinder, and the transverse pipeline II (3-4) is communicated with the vertical pipeline II (3-3).
4. A ball valve with a movable valve plate according to claim 1, wherein:
the double-movable valve plate ball core (5) comprises a ball core I (5-1), a valve plate (5-2) and a valve plate sealing ring (5-3);
the valve plate grooves I (5-1-8) on two sides of the ball core I (5-1) are respectively provided with a valve plate (5-2), the projecting shafts I (5-1-9) in the two valve plate grooves I (5-1-8) are respectively inserted into the blind holes (5-2-3) of the two valve plates (5-2) to be in clearance fit, the two valve plates (5-2) can horizontally move on the two projecting shafts I (5-1-9), the planes of the two valve plates (5-2) are in clearance fit with the inner surfaces of the valve plate grooves I (5-1-8) through a circle of projections (5-2-2), a valve plate sealing ring (5-3) is respectively arranged in the sealing groove (5-2-4) between the wall of the valve plate groove I (5-1-8) and the valve plate (5-2);
the vertical pipeline I (5-1-4) of the ball core I (5-1) is communicated with the cavity between the two valve plates (5-2) and the inner surfaces of the two valve plate grooves I (5-1-8) through the two transverse pipelines I (5-1-10).
5. A ball valve with a movable valve plate according to claim 1, wherein:
the single movable valve plate ball core (4) comprises a ball core II (4-1), a valve plate (5-2) and a valve plate sealing ring (5-3);
a valve plate (5-2) is arranged in a valve plate groove II (4-1-8) on one side of the ball core II (4-1), a projecting shaft II (4-1-9) in the valve plate groove II (4-1-8) is inserted into a blind hole (5-2-3) of the valve plate (5-2) to be in clearance fit, the valve plate (5-2) can horizontally move on the projecting shaft II (4-1-9), the plane of the valve plate (5-2) is in clearance fit with the inner surface of the valve plate groove II (4-1-8) through a circle of bulges (5-2-2), and a valve plate sealing ring (5-3) is arranged in a sealing groove (5-2-4) between the wall of the valve plate groove II (4-1-8) and the valve plate (5-2);
the vertical pipeline II (4-1-4) of the ball core II (4-1) is communicated with a cavity between the valve plate (5-2) and the valve plate groove I (5-1-8) through the horizontal pipeline II (4-1-10).
6. A ball valve with a movable valve plate according to claim 4 or 5, characterized in that:
the valve plate (5-2) is a circular plate, one surface of the valve plate is an arc surface (5-2-1), the other surface of the valve plate is a plane, a circle of protrusions (5-2-2) are arranged along the edge of the plane, a blind hole (5-2-3) is arranged at the center of the plane, a circle of sealing groove I (5-2-4) is arranged on the outer circular surface between the arc surface (5-2-1) and the plane, and an annular sealing surface (5-2-5) is arranged on the outer circular side of the arc surface (5-2-1).
7. A ball valve with a movable valve plate according to claim 4, characterized in that:
the ball core I (5-1) is a spherical body, a communicated fluid channel I (5-1-1) is arranged on a spherical surface corresponding to the ball core I (5-1), a strip-shaped control rod groove I (5-1-2) is arranged on the spherical surface at the upper end of the fluid channel I (5-1-1), a round groove I (5-1-3) is arranged in the control rod groove I (5-1-2), a vertical pipeline I (5-1-4) is arranged at the center in the round groove I (5-1-3), and a circle of sealing groove I (5-1-5) is arranged on the groove surface at the periphery of the vertical pipeline I (5-1-4);
the spherical surface at the lower end of the fluid channel I (5-1-1) is provided with a pin shaft hole I (5-1-6) and an adjusting screw hole I (5-1-7) which are communicated, the spherical surfaces at the two sides of the fluid channel I (5-1-1) are correspondingly provided with a circular valve plate groove I (5-1-8) respectively, the centers of the inner surfaces of the two valve plate grooves I (5-1-8) are provided with a protruding shaft I (5-1-9) respectively, the two protruding shafts I (5-1-9) are provided with exhaust holes (5-1-9-1) and exhaust inclined holes (5-1-9-2) respectively, the exhaust holes (5-1-9-1) are communicated with the valve plate grooves I (5-1-8) through the exhaust inclined holes (5-1-9-2), the upper ends of the inner surfaces of the two valve plate grooves I (5-1-8) are respectively provided with a transverse pipeline I (5-1-10), and the two transverse pipelines I (5-1-10) are communicated with a vertical pipeline I (5-1-4).
8. A ball valve with a movable valve plate according to claim 5, characterized in that:
the ball core II (4-1) is a spherical body, a communicated fluid channel II (4-1-1) is arranged on a spherical surface corresponding to the ball core II (4-1), a strip-shaped control rod groove II (4-1-2) is arranged on the spherical surface at the upper end of the fluid channel II (4-1-1), a round groove II (4-1-3) is arranged in the control rod groove II (4-1-2), a vertical pipeline II (4-1-4) is arranged at the center in the round groove II (4-1-3), and a circle of sealing groove II (4-1-5) is arranged on the groove surface at the periphery of the vertical pipeline II (4-1-4);
a pin shaft hole II (4-1-6) and an adjusting screw hole II (4-1-7) which are communicated are arranged on the spherical surface at the lower end of the fluid channel II (4-1-1), a round valve plate groove II (4-1-8) is arranged on the spherical surface at one side of the fluid channel II (4-1-1), a protruding shaft II (4-1-9) is arranged at the center of the inner surface of the valve plate groove II (4-1-8), exhaust holes II (4-1-9-1) and exhaust inclined holes II (4-1-9-2) are respectively arranged on the two protruding shafts II (4-1-9), the exhaust holes II (4-1-9-1) are communicated with the valve plate groove II (4-1-8) through the exhaust inclined holes II (4-1-9-2), the upper end of the inner surface of the valve plate groove II (4-1-8) is provided with a transverse pipeline II (4-1-10), and the transverse pipeline II (4-1-10) is communicated with the vertical pipeline II (4-1-4).
9. A method of using a ball valve with a movable valve plate according to claim 1, characterized by the steps of:
the use method of the ball core (5) of the double-movable valve plate comprises the following steps:
1. opening the ball valve;
when the fluid pipeline of the right valve body (2) has high-pressure fluid, the three-way ball valve (11) is switched to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port is not communicated with the right end, the high-pressure fluid in a cavity between two valve plates (5-2) of the ball core I (5-1) and the inner surfaces of two valve plate grooves I (5-1-8) sequentially passes through the two transverse pipelines I (5-1-10), the vertical pipeline I (5-1-4), the vertical pipeline II (3-3), the transverse pipeline II (3-4), the valve core pipe orifice (1-1-1), the valve core connecting pipe (14), the lower port of the three-way ball valve (11), the left port, the left connecting pipe (12) and the left connecting pipe orifice (1-3) to discharge the pressure in the control cavity, and because the pressure in the control cavity is discharged, the resultant force of the two valve plates (5-2) enables the two valve plates (5-2) to return to the two valve plate grooves I (5-2) -1-9), the cambered surfaces (5-2-1) of the two valve plates (5-2) are lower than the surface of the ball core I (5-1), the valve plates are not in contact with the valve bodies, the angle of the rotary control rod (3) is 90 degrees, a fluid channel I (5-1-1) of the ball core I (5-1) is communicated with fluid channels on two sides of the left valve body (1) and the right valve body (2), and the ball valve is completely opened;
2. closing the ball valve;
the angle of a control rod (3) is rotated by 90 degrees through a handle (3-6), a three-way ball valve (11) is switched to enable the lower port of the three-way ball valve to be communicated with a right port, the lower port of the three-way ball valve is not communicated with a left port, high-pressure fluid of a pipeline of a right valve body (2) sequentially passes through a right connecting pipe orifice (2-1), a right connecting pipe (13), the right port of the three-way ball valve (11), the lower port, a valve core connecting pipe (14), a valve core pipe orifice (1-1-1), a transverse pipeline II (3-4), a vertical pipeline II (3-3), a vertical pipeline I (5-1-4) and two transverse pipelines I (5-1-10) to enter a cavity between two valve plates (5-2) of a ball core I (5-1) and the inner surfaces of two valve plate grooves I (5-1-8), and the high-pressure fluid pushes a left valve plate (5-2) to move towards the sealing surface of the left valve body (1), the right valve plate is in a floating state, the left valve plate (5-2) is pushed by fluid, the annular sealing surface (5-2-5) of the left valve plate (5-2) is tightly attached to the sealing surface (1-4) of the left valve body (1) to achieve reliable sealing, and the ball valve is completely closed;
when the fluid pipeline of the left valve body (1) is high-pressure fluid, the opening and closing principles of the ball valve are the same;
the use method of the single movable valve plate ball core (4) comprises the following steps:
1. opening the ball valve;
when high-pressure fluid is in the fluid pipeline of the right valve body (2), the three-way ball valve (11) is cut to enable the lower port of the three-way ball valve to be communicated with the left port, the lower port of the three-way ball valve is not communicated with the right port, the high-pressure fluid in the cavity between the valve plate (5-2) and the inner surface of the valve plate groove (4-1-9) sequentially passes through the transverse pipeline II (4-1-10), the vertical pipeline II (4-1-4), the vertical pipeline II (3-3), the transverse pipeline II (3-4), the valve core pipe orifice (1-1-1), the valve core connecting pipe (14), the lower port of the three-way ball valve (11), the left port, the left connecting pipe (12) and the left connecting pipe orifice (1-3), the pressure in the control cavity is discharged, and the valve plate (5-2) retreats back into the valve plate groove I (5-1-9) due to the pressure in the control cavity of the valve core being discharged, the cambered surface (5-2-1) of the valve plate (5-2) is lower than the surface of the ball core II (4-1), the valve plate and the valve body have no contact friction, the angle of the rotary control rod (3) is 90 degrees, a fluid channel II (4-1-1) of the ball core II (4-1) is communicated with fluid channels on two sides of the left valve body (1) and the right valve body (2), and the ball valve is completely opened;
2. closing the ball valve;
the angle of a control rod (3) is rotated by 90 degrees through a handle (3-6), a three-way ball valve (11) is switched to enable the lower port of the three-way ball valve to be communicated with a right port, the lower port of the three-way ball valve is not communicated with a left port, high-pressure fluid of a fluid pipeline of a right valve body (2) sequentially passes through a right connecting pipe orifice (2-1), a right connecting pipe (13), the right port of the three-way ball valve (11), the lower port, a valve core connecting pipe (14), a valve core pipe orifice (1-1-1), a transverse pipeline II (3-4), a vertical pipeline II (3-3), a vertical pipeline II (4-1-4) and a transverse pipeline II (4-1-10) to enter a cavity between a valve plate (5-2) of a ball core II (4-1) and the inner surface of a valve plate groove II (4-1-8), and the high-pressure fluid pushes the valve plate (5-2) to move towards the sealing surface of the left valve body (1), the valve plate (5-2) is pushed by fluid, the annular sealing surface (5-2-5) of the valve plate (5-2) is tightly attached to the sealing surface (1-4) of the left valve body, reliable sealing is achieved, and the ball valve is completely closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110760858.8A CN113266684A (en) | 2021-07-06 | 2021-07-06 | Ball valve with movable valve plate and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110760858.8A CN113266684A (en) | 2021-07-06 | 2021-07-06 | Ball valve with movable valve plate and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113266684A true CN113266684A (en) | 2021-08-17 |
Family
ID=77236393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110760858.8A Pending CN113266684A (en) | 2021-07-06 | 2021-07-06 | Ball valve with movable valve plate and using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113266684A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542748A (en) * | 2022-02-22 | 2022-05-27 | 浙江旭腾阀门有限公司 | Soft and hard sealing ball valve |
-
2021
- 2021-07-06 CN CN202110760858.8A patent/CN113266684A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542748A (en) * | 2022-02-22 | 2022-05-27 | 浙江旭腾阀门有限公司 | Soft and hard sealing ball valve |
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