A high pressure large diameter ball valve

Abstract

The present invention relates to the field of valve technology, and specifically to a high-pressure large-caliber ball valve, comprising a valve body, a force-increasing mechanism and a rotating shaft, wherein a valve core is arranged in the valve body, and the force-increasing mechanism comprises a fixed shell, a rotating shell and a force-storage torsion spring, wherein the fixed shell is fixedly installed on the valve body, and the rotating shaft passes through the fixed shell and is rotatably installed on the valve body and connected to the valve core; the rotating shell is rotatably installed on the fixed shell around the axis of the rotating shaft, and the rotating shell is sleeved outside the rotating shaft; a transmission assembly is arranged in the rotating shell; and the force-storage torsion spring is rotatably installed in the fixed shell around the axis of the rotating shaft. When in use, when the rotating shell drives the rotating shaft to rotate through the transmission assembly to open or close the valve core, the force-storage torsion spring prompts the rotating shell to rotate, thereby increasing the force for the rotation of the valve core; after the valve core is opened or closed, the rotating shell rotates relative to the rotating shaft, thereby causing the force-storage torsion spring to store force for the next opening or closing of the valve core, which neither affects the rapid opening or closing of the valve core nor increases the force for the next opening or closing of the valve core. The structure is simple and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a high-pressure large-diameter ball valve. Background Art

[0002] High-pressure ball valves are mainly used in pipelines to cut off or connect the medium in the pipeline. They are widely used in all walks of life. When in use, the ball valve can be opened or closed by simply rotating 90°, which is simple to operate. In general, the rotation of the ball valve requires a small torque, but when the ball valve is used in situations where the diameter is large and the medium flow rate in the pipeline is fast, the high-speed flowing medium will produce a large resistance to the rotation of the ball valve. In the prior art, the utility model patent with the authorization announcement number CN218208078U discloses a power-assisted opening mechanism based on a large-diameter PE ball valve, which drives the sun gear to rotate through the main operating lever, the sun gear drives the planetary pinion to rotate, the planetary pinion drives the planetary cage to rotate, the planetary cage drives the fan gear to rotate, and the fan gear drives the valve stem to rotate to open and close the ball valve, change the speed, and achieve a small torque to open and close the ball valve. This method has a complex structure and more gear transmissions, which will increase the torque required for rotation, which is not conducive to helping the ball valve open or close. Summary of the invention

[0003] The invention provides a high-pressure large-diameter ball valve to solve the problem of poor assisting effect when the ball valve is opened and closed in the prior art.

[0004] A high-pressure large-diameter ball valve of the present invention adopts the following technical solution:

[0005] A high-pressure large-diameter ball valve comprises a valve body, a force-enhancing mechanism and a rotating shaft, wherein a valve core is arranged in the valve body, and joints are arranged on both sides of the valve body respectively, and the valve core rotates in the valve body to connect or isolate the two joints; the force-enhancing mechanism comprises a fixed shell, a rotating shell and a force-storage torsion spring, the fixed shell is fixedly installed on the valve body, the rotating shaft passes through the fixed shell and is rotatably installed on the valve body and connected to the valve core; the rotating shell is rotatably installed on the fixed shell around the axis of the rotating shaft, and the rotating shell is sleeved outside the rotating shaft; a transmission assembly is arranged in the rotating shell, and the transmission assembly has an extended state and a retracted state, and when the transmission assembly is in the extended state, the rotating shell drives the rotating shaft to rotate synchronously through the transmission assembly, and when the transmission assembly is in the retracted state, the rotating shell rotates relative to the rotating shaft; the force-storage torsion spring is rotatably installed in the fixed shell around the axis of the rotating shaft, and when the rotating shell drives the rotating shaft to rotate, it prompts the rotating shell to rotate, and stores force in the process of the rotating shell rotating relative to the rotating shaft.

[0006] Furthermore, the fixed shell includes a first outer cylinder, an intermediate cylinder and a first inner cylinder which are spaced apart and coaxial in sequence from the outside to the inside, and the first outer cylinder, the intermediate cylinder and the first inner cylinder are fixedly connected; the intermediate cylinder is surrounded by a first baffle portion and a first slide groove portion, the first slide groove portion is provided with a first slide groove which is coaxial with the intermediate cylinder, and the two ends of the first slide groove respectively extend to the two sides in the circumferential direction of the first baffle portion; the first inner cylinder is surrounded by a second baffle portion and a second slide groove portion, the second slide groove portion is provided with a second slide groove which is coaxial with the first inner cylinder, and the two ends of the second slide groove respectively extend to the two sides in the circumferential direction of the second baffle portion; the first baffle portion The part and the second baffle part are arranged relatively to each other in the circumferential direction of the inner cylinder; the first slide groove is provided with a first avoidance slot, and the second slide groove is provided with a second avoidance slot; the force storage torsion spring is a multi-turn spiral structure coaxial with the first inner cylinder, and the inner ring and outer ring of the force storage torsion spring are slidably installed on the first slide groove and the second slide groove respectively; the outer ring of the force storage torsion spring is provided with a first elastic block, and when the first elastic block cooperates with the first avoidance slot, it prevents the outer ring of the force storage torsion spring from continuing to rotate; the inner ring of the force storage torsion spring is provided with a second elastic block, and when the second elastic block cooperates with the second avoidance slot, it prevents the inner ring of the force storage torsion spring from continuing to rotate.

[0007] Furthermore, the rotating shell includes a second outer cylinder and a second inner cylinder, the second inner cylinder is located in the second outer cylinder and is coaxial with the second outer cylinder, and the second inner cylinder and the second outer cylinder are fixedly connected; the second outer cylinder is located between the first outer cylinder and the intermediate cylinder and is coaxial with the first outer cylinder, and the inner ring of the second outer cylinder is provided with a first protruding section that cooperates with the first sliding groove; the second inner cylinder is located in the first inner cylinder and is coaxial with the first inner cylinder, and the outer ring of the second inner cylinder is provided with a second protruding section that cooperates with the second sliding groove; the first protruding section and the second protruding section are both provided with inclined surfaces on the circumferential side surfaces of the second inner cylinder, and the first protruding section and the second protruding section are provided with inclined surfaces on the circumferential side surfaces of the second inner cylinder. The inclined surface of a protruding section abuts against the first elastic card block, and when the first elastic card block moves to the first avoidance slot, the first elastic card block is pushed to cooperate with the first avoidance slot, and the first protruding section slides in the first slide slot to prevent the first elastic card block from disengaging from the first avoidance slot; the inclined surface of the second protruding section abuts against the second elastic card block, and when the second elastic card block moves to the second avoidance slot, the second elastic card block is pushed to cooperate with the second avoidance slot, and the second protruding section slides in the second slide slot to prevent the second elastic card block from disengaging from the second avoidance slot.

[0008] Furthermore, the inner diameter of the first baffle portion is smaller than the inner diameter of the first slide groove portion, so that a first table surface is formed at the junction of the first baffle portion and the first slide groove portion; the outer diameter of the second baffle portion is larger than the outer diameter of the second slide groove portion, so that a second table surface is formed at the junction of the second baffle portion and the second slide groove portion; the outer ring of the force storage torsion spring is provided with an outer arc stopper, which is slidably arranged on the inner side of the first slide groove portion, and when the outer arc stopper moves to abut against the first table surface, it prevents the outer ring of the force storage torsion spring from further rotating; the inner ring of the force storage torsion spring is provided with an inner arc stopper, which is slidably arranged on the outer side of the second slide groove portion, and when the inner arc stopper moves to abut against the second table surface, it prevents the inner ring of the force storage torsion spring from further rotating.

[0009] Furthermore, the first elastic card block is arranged on the outside of the outer arc stop block, and the second elastic card block is arranged on the inside of the inner arc stop block; the first elastic card block and the second elastic card block have the same structure, both including a first tension spring and a card block, and when the first protrusion section moves to deviate from the first avoidance slot or the second protrusion section moves to deviate from the second avoidance slot, the first tension spring causes the card block to disengage from the side wall of the first slide slot or the second slide slot, thereby causing the force storage torsion spring to push the first protrusion section or the second protrusion section to move through the card block, thereby causing the rotating shell to rotate.

[0010] Furthermore, a limiting groove is provided on the inner ring of the first inner cylinder, and a stop block is provided on the outer circumference of the rotating shaft. The stop block is slidably installed in the limiting groove, so that the rotating shaft can only reciprocate within a first preset angle range.

[0011] Furthermore, the rotating shell also includes a cover plate, which connects the ends of the second outer cylinder and the second inner cylinder; a mounting groove arranged radially along the second inner cylinder is provided in the cover plate, and the mounting groove connects the inner ring of the second inner cylinder and the outer ring of the second outer cylinder; an arc platform is also provided on the outer circumference of the rotating shaft, and the angle of the arc platform in the circumferential direction of the rotating shaft is a second preset angle, and the second preset angle is less than 270°, and the two end surfaces of the arc platform in the circumferential direction of the rotating shaft are respectively perpendicular to the outer circumferential surface of the rotating shaft; a clearance groove is provided on the inner wall of the first outer cylinder, and the clearance groove is coaxial with the first outer cylinder, and the angle of the clearance groove in the circumferential direction of the first outer cylinder is a third preset angle, and the third preset angle is the first preset angle. The difference between the second preset angle and the first preset angle; the transmission assembly includes a telescopic sleeve rod and a second tension spring, the telescopic sleeve rod is slidably installed in the installation groove, and the two ends are respectively abutted against the rotating shaft and the inner wall surface of the first outer cylinder, at this time, the transmission assembly is in an extended state; the two ends of the second tension spring are respectively connected to the telescopic sleeve rod and the cover plate, and the second tension spring prompts the telescopic sleeve rod to move away from the rotating shaft; when the rotating shell drives the telescopic sleeve rod to move to abut against the arc table, it drives the rotating shaft to rotate synchronously, and after the rotating shaft rotates the first preset angle, the second tension spring prompts the telescopic sleeve rod to move outward to the give way groove, so that the telescopic sleeve rod is out of contact with the rotating shaft, at this time, the transmission assembly is in a recovered state.

[0012] Furthermore, the telescopic sleeve includes an inner rod, an outer rod and a spring. The inner rod and the outer rod are both slidably installed in the installation groove and connected by a spring. The inner rod is located on the side of the outer rod close to the rotating shaft. The spring makes the inner rod abut against the rotating shaft and the outer rod abut against the inner wall of the first outer tube in a naturally extended state. The second tension spring connects the cover plate and the outer rod, and moves the telescopic sleeve as a whole away from the rotating shaft by pulling the outer rod.

[0013] Furthermore, there are multiple force-storing torsion springs, which are arranged in sequence along the axial direction of the rotating shaft. There are multiple corresponding first slide grooves, second slide grooves, first protruding sections and second protruding sections, and the first avoidance grooves on the multiple first slide grooves are distributed in sequence in the circumferential direction of the intermediate cylinder, and the second avoidance grooves on the multiple second slide grooves are distributed in sequence in the circumferential direction of the first inner cylinder.

[0014] Furthermore, a high-pressure large-diameter ball valve also includes a hand wheel, and the hand wheel is fixedly connected to the cover plate.

[0015] The beneficial effects of the present invention are as follows: when the high-pressure large-diameter ball valve of the present invention is used, when the rotating shell drives the rotating shaft to rotate through the transmission assembly to open or close the valve core, the force storage torsion spring prompts the rotating shell to rotate, thereby increasing the force for the rotation of the valve core; after the valve core is opened or closed, the rotating shell rotates relative to the rotating shaft to allow the force storage torsion spring to store force for the next opening or closing of the valve core, which does not affect the rapid opening or closing of the valve core and can also increase the force for the next opening or closing of the valve core. The structure is simple and easy to operate.

[0016] Furthermore, by providing a plurality of force-storage torsion springs, in the process of the rotating shell driving the rotating shaft to rotate to open or close the valve core, the plurality of force-storage springs are released one by one, and the rotation of the rotating shell is increased in turn, thereby further prompting the valve core to open or close. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a force-enhancing mechanism and a rotating shaft in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0020] Figure 3 It is a cross-sectional schematic diagram of a force amplification mechanism and a rotating shaft in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0021] Figure 4 It is a structural schematic diagram of a rotating shaft and a telescopic sleeve rod in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0022] Figure 5 It is a partial cross-sectional schematic diagram of a rotating shell in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0023] Figure 6 It is a partial cutaway schematic diagram of a fixed shell in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0024] Figure 7 It is a structural schematic diagram of a force storage torsion spring in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0025] Figure 8 for Figure 7 The enlarged schematic diagram at A in the middle;

[0026] Fig. 9 It is a schematic structural explosion diagram of a force-enhancing mechanism and a rotating shaft in an embodiment of a high-pressure large-diameter ball valve of the present invention when the valve core is closed (or opened);

[0027] Fig.10 It is a schematic structural explosion diagram of a force-enhancing mechanism and a rotating shaft in an embodiment of a high-pressure large-diameter ball valve of the present invention when the valve core rotates to an open (or closed) state;

[0028] Fig.11 It is a schematic structural explosion diagram of a force-enhancing mechanism and a rotating shaft when the rotating shell continues to rotate after the valve core is opened (or closed) in an embodiment of a high-pressure large-diameter ball valve of the present invention;

[0029] Fig.12 It is a schematic structural explosion diagram of the force-enhancing mechanism and the rotating shaft when the rotating shell continues to rotate and drives the outer ring of the force-storing torsion spring to rotate after the valve core is opened (or closed) in an embodiment of the high-pressure large-diameter ball valve of the present invention;

[0030] Fig.13 It is a schematic diagram of the structure explosion of the force-increasing mechanism and the rotating shaft when the valve core is opened (or closed) in an embodiment of a high-pressure large-diameter ball valve of the present invention and the rotating shell continues to rotate and drives the outer ring of the force-storage torsion spring to rotate, so that part of the force-storage torsion spring is charged;

[0031] Fig.14 It is a schematic diagram of the structure explosion of the force-increasing mechanism and the rotating shaft when the valve core is opened (or closed) in an embodiment of a high-pressure large-diameter ball valve of the present invention and the rotating shell continues to rotate until all the force-storing torsion springs are charged and the telescopic sleeve abuts against the other side of the arc platform;

[0032] In the figure: 100, valve body; 110, joint; 200, hand wheel; 300, force amplification mechanism; 400, rotating shaft; 410, stop block; 420, arc platform; 500, fixed shell; 510, first outer cylinder; 511, give way groove; 520, intermediate cylinder; 521, first baffle part; 522, first slide groove; 523, first avoidance slot; 525, first slide groove part; 530, first inner cylinder; 531, second baffle part; 532, second slide groove; 533, second avoidance slot; 534, limit slot; 535, second slide groove part; 5 40. Bottom plate; 600. Rotating shell; 610. Second outer cylinder; 611. First raised section; 620. Second inner cylinder; 621. Second raised section; 630. Cover plate; 631. Mounting groove; 700. Force storage torsion spring; 710. First elastic clamping block; 711. First tension spring; 712. Block; 713. Clamping column; 720. Second elastic clamping block; 730. Outer arc block; 740. Inner arc block; 800. Transmission assembly; 810. Telescopic sleeve rod; 811. Inner rod; 812. Outer rod; 813. Spring; 820. Second tension spring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] An embodiment of a high-pressure large-diameter ball valve of the present invention is as follows Figures 1 to 14 As shown, it includes a valve body 100 , a force amplifying mechanism 300 and a rotating shaft 400 .

[0035] A valve core (not shown in the figure) is arranged in the valve body 100, and joints 110 are respectively arranged on both sides of the valve body 100. The valve core rotates in the valve body 100 to connect or isolate the two joints 110; specifically, a through hole is arranged on the valve core, and when the valve core rotates until the through hole is coaxial with the two joints 110, the valve core is in an open state, and when the valve core rotates until the through hole is perpendicular to the line connecting the two joints 110, the valve core is in a closed state, and the valve core is opened or closed every 90° rotation.

[0036] The force amplification mechanism 300 includes a fixed shell 500, a rotating shell 600 and a force storage torsion spring 700. The fixed shell 500 is fixedly installed on the valve body 100. The rotating shaft 400 passes through the fixed shell 500 and is rotatably installed on the valve body 100 and connected to the valve core; specifically, the rotating shaft 400 and the valve core can be connected through a key groove, and a sealing ring is installed between the rotating shaft 400 and the valve body 100.

[0037] The rotating shell 600 is rotatably mounted on the fixed shell 500 around the axis of the rotating shaft 400, and the rotating shell 600 is sleeved outside the rotating shaft 400; a transmission assembly 800 is arranged inside the rotating shell 600, and the transmission assembly 800 has an extended state and a retracted state. When the transmission assembly 800 is in the extended state, the rotating shell 600 drives the rotating shaft 400 to rotate synchronously through the transmission assembly 800, and when the transmission assembly 800 is in the retracted state, the rotating shell 600 rotates relative to the rotating shaft 400;

[0038] The force storage torsion spring 700 is rotatably installed in the fixed shell 500 around the axis of the rotating shaft 400 , and promotes the rotating shell 600 to rotate when the rotating shell 600 drives the rotating shaft 400 to rotate, and stores force during the rotation of the rotating shell 600 relative to the rotating shaft 400 .

[0039] When in use, when the rotating shell 600 drives the rotating shaft 400 to rotate through the transmission assembly 800 to open or close the valve core, the force storage torsion spring 700 prompts the rotating shell 600 to rotate, thereby increasing the force for the rotation of the valve core; after the valve core is opened or closed, the rotating shell 600 rotates relative to the rotating shaft 400 so that the force storage torsion spring 700 stores force for the next opening or closing of the valve core, which neither affects the rapid opening or closing of the valve core nor increases the force for the next opening or closing of the valve core.

[0040] In this embodiment, the fixed shell 500 includes a first outer cylinder 510, an intermediate cylinder 520 and a first inner cylinder 530 which are spaced apart and coaxial from the outside to the inside. The first outer cylinder 510, the intermediate cylinder 520 and the first inner cylinder 530 are fixedly connected. Specifically, a bottom plate 540 is provided at one end of the first outer cylinder 510, the intermediate cylinder 520 and the first inner cylinder 530 close to the valve body 100. The first outer cylinder 510, the intermediate cylinder 520 and the first inner cylinder 530 are all fixedly connected to the bottom plate 540. The rotating shaft 400 passes through the bottom plate 540 and is located in the first inner cylinder 530 and is coaxial with the first inner cylinder 530. The intermediate cylinder 520 is surrounded by a first baffle portion 521 and a first slide groove portion 525, and a first slide groove 522 coaxial with the intermediate cylinder 520 is provided on the first slide groove portion 525, and two ends of the first slide groove 522 extend to both sides of the first baffle portion 521 in the circumferential direction; the first inner cylinder 530 is surrounded by a second baffle portion 531 and a second slide groove portion 535, and a second slide groove 532 coaxial with the first inner cylinder 530 is provided on the second slide groove portion 535, and two ends of the second slide groove 532 extend to both sides of the second baffle portion 531 in the circumferential direction; the first baffle portion 521 and the second baffle portion 531 are arranged opposite to each other in the circumferential direction of the first inner cylinder 530, that is, the first baffle portion 521 and the second baffle portion 531 are respectively located on both sides of the rotating shaft 400. A first avoidance slot 523 is provided on the first slide slot 522, and a second avoidance slot 533 is provided on the second slide slot 532; the force storage torsion spring 700 is a multi-turn spiral structure coaxial with the first inner cylinder 530, and the inner ring and outer ring of the force storage torsion spring 700 are slidably installed on the first slide slot 522 and the second slide slot 532 respectively; a first elastic block 710 is provided on the outer ring of the force storage torsion spring 700, and when the first elastic block 710 cooperates with the first avoidance slot 523, it prevents the outer ring of the force storage torsion spring 700 from continuing to rotate; a second elastic block 720 is provided on the inner ring of the force storage torsion spring 700, and when the second elastic block 720 cooperates with the second avoidance slot 533, it prevents the inner ring of the force storage torsion spring 700 from continuing to rotate.

[0041] When the valve core is in the open or closed state, the first elastic block 710 cooperates with the first avoidance slot 523, and the inner ring of the force storage torsion spring 700 cannot be further rotated under the obstruction of the second baffle portion 531, or the second elastic block 720 cooperates with the second avoidance slot 533, and the outer ring of the force storage torsion spring 700 cannot be further rotated under the obstruction of the first baffle portion 521, and the force storage torsion spring 700 is in a force storage state. In the process of the rotating shell 600 driving the rotating shaft 400 to rotate to open or close the valve core, the first elastic block 710 is allowed to disengage from the first avoidance slot 523, or the second elastic block 720 is allowed to disengage from the second avoidance slot 533, and the first elastic block 710 and the second elastic block 720 promote the rotation of the rotating shell 600 under the action of the force storage torsion spring 700 restoring the deformation. After the valve core is opened or closed, the rotating shell 600 continues to rotate relative to the rotating shaft 400, and the inner ring of the force storage torsion spring 700 is again blocked by the second baffle portion 531, and the first elastic block 710 cooperates with the first avoidance slot 523, or the outer ring of the force storage torsion spring 700 is blocked by the first baffle portion 521, and the second elastic block 720 cooperates with the second avoidance slot 533, so that the force storage torsion spring 700 is in the force storage state again. For example, when the force storage torsion spring 700 spirally extends from its inner ring to its outer ring in a counterclockwise direction, after the rotating shell 600 rotates clockwise to open or close the valve core, the rotating shell 600 continues to rotate clockwise relative to the rotating shaft 400 so that the outer ring of the force storage torsion spring 700 is blocked by the first baffle portion 521, and then the inner ring of the force storage torsion spring 700 continues to rotate until the second elastic block 720 cooperates with the second avoidance slot 533, and the force storage torsion spring 700 is stretched and force is stored; when the rotating shell 600 rotates counterclockwise to open or close the valve core next time, the second elastic block 720 is allowed to rotate first, and the second elastic block 720 is allowed to rotate second, so that ... The block 720 disengages from the second avoidance slot 533, and the second elastic block 720 causes the rotating shell 600 to rotate counterclockwise under the action of the force storage torsion spring 700 restoring its deformation. After the rotating shell 600 rotates counterclockwise to open or close the valve core, the rotating shell 600 continues to rotate counterclockwise relative to the rotating shaft 400 so that the inner ring of the force storage torsion spring 700 is blocked by the second baffle portion 531, and then the outer ring of the force storage torsion spring 700 continues to rotate until the first elastic block 710 cooperates with the first avoidance slot 523, and the force storage torsion spring 700 is stretched and stored again.

[0042] In this embodiment, the rotating shell 600 includes a second outer cylinder 610 and a second inner cylinder 620. The second inner cylinder 620 is located inside the second outer cylinder 610 and is coaxial with the second outer cylinder 610. The second inner cylinder 620 and the second outer cylinder 610 are fixedly connected. The second outer cylinder 610 is located between the first outer cylinder 510 and the intermediate cylinder 520 and is coaxial with the first outer cylinder 510. The inner ring of the second outer cylinder 610 is provided with a first protruding section 611 that matches the first sliding groove 522. The second inner cylinder 620 is located inside the first inner cylinder 530 and is coaxial with the first inner cylinder 530. The outer ring of the second inner cylinder 620 is provided with a second protruding section 621 that matches the second sliding groove 532. The first protrusion section 611 and the second protrusion section 621 are both provided with inclined surfaces on the circumferential side surfaces of the second inner cylinder 620. The inclined surface of the first protrusion section 611 abuts against the first elastic block 710, and when the first elastic block 710 moves to the first avoidance groove 523, the first elastic block 710 is pushed to cooperate with the first avoidance groove 523, and the first protrusion section 611 slides in the first slide groove 522 to prevent the first elastic block 710 from disengaging from the first avoidance groove 523, thereby keeping the force storage torsion spring 700 in a force storage state. The inclined surface of the second protrusion section 621 abuts against the second elastic block 720, and when the second elastic block 720 moves to the second avoidance slot 533, it pushes the second elastic block 720 to cooperate with the second avoidance slot 533, and the second protrusion section 621 slides in the second slide groove 532 to prevent the second elastic block 720 from disengaging from the second avoidance slot 533, thereby keeping the force storage torsion spring 700 in a force storage state.

[0043] In this embodiment, the inner diameter of the first baffle portion 521 is smaller than the inner diameter of the first slide groove portion 525, so that the first baffle portion 521 and the first slide groove portion 525 form a first table surface at the junction; the outer diameter of the second baffle portion 531 is larger than the outer diameter of the second slide groove portion 535, so that the second baffle portion 531 and the second slide groove portion 535 form a second table surface at the junction. The outer ring of the power storage torsion spring 700 is provided with an outer arc stopper 730, which is slidably arranged inside the first slide groove portion 525, and when the outer arc stopper 730 moves to abut against the first table surface, the outer ring of the power storage torsion spring 700 is blocked from further rotation; the inner ring of the power storage torsion spring 700 is provided with an inner arc stopper 740, which is slidably arranged outside the second slide groove portion 535, and when the inner arc stopper 740 moves to abut against the second table surface, the inner ring of the power storage torsion spring 700 is blocked from further rotation. Specifically, the outer ring of the force storage torsion spring 700 is fixedly installed with an outer ring, and the inner ring of the force storage torsion spring 700 is fixedly installed with an inner ring. The outer ring and the inner ring are coaxial, and the outer ring is rotatably installed on the inner ring of the intermediate cylinder 520, and the inner ring is rotatably installed on the outer ring of the first inner cylinder 530; the outer arc stopper 730 is arranged on the outside of the outer ring and close to the end of the outer ring of the force storage torsion spring 700, and the inner arc stopper 740 is arranged on the inside of the inner ring and close to the end of the inner ring of the force storage torsion spring 700.

[0044] In this embodiment, the first elastic block 710 is arranged on the outside of the outer arc block 730, and the second elastic block 720 is arranged on the inside of the inner arc block 740; the first elastic block 710 and the second elastic block 720 have the same structure, both including a first tension spring 711 and a block 712, and when the first protrusion section 611 moves to deviate from the first avoidance groove 523 or the second protrusion section 621 moves to deviate from the second avoidance groove 533, the first tension spring 711 causes the block 712 to disengage from the side wall of the first slide groove 522 or the second slide groove 532, thereby causing the force storage torsion spring 700 to push the first protrusion section 611 or the second protrusion section 621 to move through the block 712, thereby causing the rotating shell 600 to rotate. Specifically, limiting slots are provided on the outer side surface of the outer arc stop block 730 and the inner side surface of the inner arc stop block 740, the first tension spring 711 and the block 712 are both provided in the limiting slots, and the block 712 is provided with a column 713 extending out of the limiting slot, the inclined surface of the first protruding section 611 or the second protruding section 621 abuts against the column 713, thereby pushing the block 712 to cooperate with the first avoidance slot 523 or the second avoidance slot 533.

[0045] In this embodiment, the inner circle of the first inner cylinder 530 is provided with a limiting groove 534, and the outer circumference of the rotating shaft 400 is provided with a stopper 410, which is slidably installed in the limiting groove 534, so that the rotating shaft 400 can only reciprocate within the first preset angle range. The valve core can be opened or closed every 90° rotation, so the first preset angle is generally 90°.

[0046] In this embodiment, the rotating shell 600 further includes a cover plate 630, which connects the ends of the second outer cylinder 610 and the second inner cylinder 620 away from the bottom plate 540; the cover plate 630 is provided with a mounting groove 631 arranged along the radial direction of the second inner cylinder 620, and the mounting groove 631 connects the inner circle of the second inner cylinder 620 and the outer circle of the second outer cylinder 610. The outer circumference of the rotating shaft 400 is also provided with an arc platform 420, and the angle of the arc platform 420 in the circumferential direction of the rotating shaft 400 is a second preset angle, and the second preset angle is less than 270°, preferably, the second preset angle is 180°, and the two end surfaces of the arc platform 420 in the circumferential direction of the rotating shaft 400 are respectively perpendicular to the outer circumferential surface of the rotating shaft 400. The inner wall of the first outer cylinder 510 is provided with a clearance groove 511, which is coaxial with the first outer cylinder 510, and the angle of the clearance groove 511 in the circumferential direction of the first outer cylinder 510 is a third preset angle, and the third preset angle is the difference between the second preset angle and the first preset angle. The transmission assembly 800 includes a telescopic sleeve 810 and a second tension spring 820. The telescopic sleeve 810 is slidably installed in the installation groove 631, and its two ends are respectively in contact with the rotating shaft 400 and the inner wall surface of the first outer cylinder 510. At this time, the transmission assembly 800 is in an extended state; the two ends of the second tension spring 820 are respectively connected to the telescopic sleeve 810 and the cover plate 630, and the second tension spring 820 prompts the telescopic sleeve 810 to move away from the rotating shaft 400; when the rotating shell 600 drives the telescopic sleeve 810 to move to abut against the arc platform 420, it drives the rotating shaft 400 to rotate synchronously, and after the rotating shaft 400 rotates by a first preset angle, the second tension spring 820 prompts the telescopic sleeve 810 to move outward to the give way groove 511, so that the telescopic sleeve 810 is out of contact with the rotating shaft 400. At this time, the transmission assembly 800 is in a recovered state, and the rotating shell 600 can drive the telescopic sleeve 810 to rotate relative to the rotating shaft 400. In order to facilitate the telescopic sleeve 810 to enter or escape from the clearance groove 511 , both ends of the clearance groove 511 in the circumferential direction are provided with inclined surfaces transitioning to the inner wall surface of the first outer cylinder 510 .

[0047] In this embodiment, the telescopic sleeve 810 includes an inner rod 811, an outer rod 812 and a spring 813. The inner rod 811 and the outer rod 812 are both slidably installed in the installation groove 631 and connected by the spring 813. The inner rod 811 is located on the side of the outer rod 812 close to the rotating shaft 400; the spring 813 makes the inner rod 811 abut against the rotating shaft 400 in a naturally extended state, and makes the outer rod 812 abut against the inner wall of the first outer tube 510; the second tension spring 820 connects the cover plate 630 and the outer rod 812, and pulls the outer rod 812 to move the telescopic sleeve 810 as a whole away from the rotating shaft 400.

[0048] In this embodiment, there are multiple force storage torsion springs 700, which are sequentially arranged at intervals along the axial direction of the rotating shaft 400, and there are multiple corresponding first slide grooves 522, second slide grooves 532, first protruding sections 611 and second protruding sections 621, and the first avoidance card grooves 523 on the multiple first slide grooves 522 are sequentially spaced and distributed in the circumference of the intermediate cylinder 520, and the second avoidance card grooves 533 on the multiple second slide grooves 532 are sequentially spaced and distributed in the circumference of the first inner cylinder 530. In the process of the rotating shell 600 driving the rotating shaft 400 to rotate and open or close the valve core, the multiple force storage torsion springs 700 are released one by one, and the rotation of the rotating shell 600 is sequentially increased, thereby further prompting the valve core to open or close. Among them, the distribution angle of the multiple first avoidance card grooves 523 corresponding to the multiple force storage torsion springs 700 on the circumference of the intermediate cylinder 520 does not exceed the first preset angle, and the distribution angle of the second avoidance card grooves 533 corresponding to the multiple force storage torsion springs 700 on the circumference of the first inner cylinder 530 does not exceed the first preset angle.

[0049] In this embodiment, a high-pressure large-caliber ball further includes a hand wheel 200, and the hand wheel 200 is fixedly connected to the cover plate 630, and the rotating shell 600 is driven to rotate by rotating the hand wheel 200.

[0050] In a high-pressure large-diameter ball valve of the present invention, when it is closed or open, the first elastic block 710 cooperates with the first avoidance groove 523, and the inner ring of the force storage torsion spring 700 cannot rotate further due to the obstruction of the second baffle portion 531, or the second elastic block 720 cooperates with the second avoidance groove 533, and the outer ring of the force storage torsion spring 700 cannot rotate further due to the obstruction of the first baffle portion 521, and the force storage torsion spring 700 is in a force storage state.

[0051] For ease of description, the force storage torsion spring 700 is set to be a spiral structure that spirally extends from its inner ring to its outer ring in a counterclockwise direction. The valve core is set to be in a closed state in the initial state, and the outer ring of the force storage torsion spring 700 cannot be further rotated in the clockwise direction due to the obstruction of the first baffle portion 521. The second elastic block 720 cooperates with the second avoidance slot 533, and the second raised section 621 prevents the second elastic block 720 from disengaging from the second avoidance slot 533. The force storage torsion spring 700 is in a force storage state. At this time, the two ends of the telescopic sleeve 810 are respectively in contact with the inner wall of the rotating shaft 400 and the first outer cylinder 510, and the telescopic sleeve 810 is in contact with one side of the arc platform 420 on the rotating shaft 400. Figures 9 to 14As shown, the hand wheel 200 is rotated counterclockwise to drive the rotating shell 600 to rotate, and the rotating shell 600 pushes the arc platform 420 through the telescopic sleeve rod 810 to make the rotating shaft 400 rotate synchronously. When the rotating shell 600 rotates to the second protruding section 621 passing over the second avoidance slot 533 on the corresponding second slide slot 532, the block 712 of the second elastic block 720 is disengaged from the second avoidance slot 533 under the action of the first tension spring 711, and the force storage torsion spring 700 pushes the rotating shell 600 to rotate counterclockwise through the second elastic block 720 under the action of restoring deformation, thereby increasing the force for the rotation of the rotating shell 600. When there are multiple force storage torsion springs 700, the multiple force storage torsion springs 700 are released in sequence to increase the force for the rotation of the rotating shell 600 in batches. After the rotating shaft 400 rotates by a first preset angle, the stop block 410 on the rotating shaft 400 abuts against the other side wall of the limiting groove 534, and the valve core is in a fully open state. At the same time, the telescopic sleeve 810 is disengaged from the arc platform 420 on the rotating shaft 400 under the action of the second tension spring 820, and cooperates with the yield groove 511 on the inner wall of the first outer tube 510. The rotating shell 600 continues to rotate counterclockwise, first making the multiple force storage torsion springs 700 fully recover to the natural extension state, then the first raised section 611 on the rotating shell 600 abuts against the first elastic block 710, and drives the outer ring of the force storage torsion spring 700 to rotate counterclockwise, and the inner ring of the force storage torsion spring 700 rotates until it abuts against the second baffle portion 531 and stops rotating, and the outer ring of the force storage torsion spring 700 continues to rotate with the rotating shell 600 so that the force storage torsion spring 700 is stretched, and when the first raised section 611 pushes the first elastic block 710 to move to the first avoidance slot 523, the inclined surface of the first raised section 611 pushes the first elastic block 710 to cooperate with the first avoidance slot 523, and the first raised section 611 continues to rotate with the rotating shell 600 to prevent the first elastic block 710 from disengaging from the first avoidance slot 523, so that the force storage torsion spring 700 maintains the force storage state. After the rotating shell 600 rotates to the second preset angle relative to the rotating shaft 400, all the force storage torsion springs 700 are in the force storage state. Since the force stored by the force storage torsion springs 700 is the force in the circumferential direction of the intermediate cylinder 520, and the inner and outer ends of the force storage torsion springs 700 are both restricted by the fixed shell 500, it will not affect the rotation of the rotating shell 600, nor will it affect the opening and closing of the valve core. In addition, during the rotation of the rotating shell 600 relative to the rotating shaft 400, the telescopic sleeve 810 has been disengaged from the clearance groove 511, and the two ends of the telescopic sleeve 810 are respectively in contact with the arc platform 420 and the inner wall of the first outer cylinder 510. When the rotating shell 600 rotates to the second preset angle relative to the rotating shaft 400, the telescopic sleeve 810 passes over the arc platform 420 and abuts against the rotating shaft 400.

[0052] When the valve core needs to be rotated to close next time, the hand wheel 200 only needs to be rotated clockwise to make the rotating shell 600 rotate clockwise by the sum of the first preset angle and the second preset angle.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-pressure large-diameter ball valve, characterized in that: It includes valve body, force amplification mechanism and rotating shaft. A valve core is arranged in the valve body, and joints are arranged on both sides of the valve body respectively. The valve core rotates in the valve body to connect or isolate the two joints. The force-increasing mechanism comprises a fixed shell, a rotating shell and a force-storing torsion spring, wherein the fixed shell is fixedly mounted on the valve body, and the rotating shaft passes through the fixed shell and is rotatably mounted on the valve body and connected to the valve core; The rotating shell is installed on the fixed shell so as to rotate around the axis of the rotating shaft, and the rotating shell is sleeved outside the rotating shaft; a transmission assembly is arranged inside the rotating shell, and the transmission assembly has an extended state and a retracted state. When the transmission assembly is in the extended state, the rotating shell drives the rotating shaft to rotate synchronously through the transmission assembly, and when the transmission assembly is in the retracted state, the rotating shell rotates relative to the rotating shaft; The force storage torsion spring is installed in the fixed shell and rotates around the axis of the rotating shaft. When the rotating shell drives the rotating shaft to rotate, the rotating shell is driven to rotate, and force is stored in the process of the rotating shell rotating relative to the rotating shaft. The fixed shell includes a first outer cylinder, an intermediate cylinder and a first inner cylinder which are spaced and coaxial in sequence from the outside to the inside, and the first outer cylinder, the intermediate cylinder and the first inner cylinder are fixedly connected; the intermediate cylinder is surrounded by a first baffle portion and a first slide groove portion, the first slide groove portion is provided with a first slide groove coaxial with the intermediate cylinder, and the two ends of the first slide groove extend to the two sides of the first baffle portion in the circumferential direction respectively; the first inner cylinder is surrounded by a second baffle portion and a second slide groove portion, the second slide groove portion is provided with a second slide groove coaxial with the first inner cylinder, and the two ends of the second slide groove extend to the two sides of the second baffle portion in the circumferential direction respectively; the first baffle portion and the first slide groove portion are .... The two baffle parts are arranged relatively to each other in the circumferential direction of the inner cylinder; the first slide groove is provided with a first avoidance slot, and the second slide groove is provided with a second avoidance slot; the force storage torsion spring is a multi-turn spiral structure coaxial with the first inner cylinder, and the inner ring and outer ring of the force storage torsion spring are slidably installed on the first slide groove and the second slide groove respectively; the outer ring of the force storage torsion spring is provided with a first elastic block, and when the first elastic block cooperates with the first avoidance slot, the outer ring of the force storage torsion spring is prevented from continuing to rotate; the inner ring of the force storage torsion spring is provided with a second elastic block, and when the second elastic block cooperates with the second avoidance slot, the inner ring of the force storage torsion spring is prevented from continuing to rotate; The rotating shell includes a second outer cylinder and a second inner cylinder, the second inner cylinder is located in the second outer cylinder and is coaxial with the second outer cylinder, and the second inner cylinder and the second outer cylinder are fixedly connected; the second outer cylinder is located between the first outer cylinder and the intermediate cylinder and is coaxial with the first outer cylinder, and the inner ring of the second outer cylinder is provided with a first protruding section that cooperates with the first sliding groove; the second inner cylinder is located in the first inner cylinder and is coaxial with the first inner cylinder, and the outer ring of the second inner cylinder is provided with a second protruding section that cooperates with the second sliding groove; the first protruding section and the second protruding section are both provided with inclined surfaces on the circumferential side surfaces of the second inner cylinder, and the first protruding section The inclined surface of the starting section abuts against the first elastic block, and when the first elastic block moves to the first avoidance slot, the first elastic block is pushed to cooperate with the first avoidance slot, and the first raised section slides in the first slide slot to prevent the first elastic block from disengaging from the first avoidance slot; the inclined surface of the second raised section abuts against the second elastic block, and when the second elastic block moves to the second avoidance slot, the second elastic block is pushed to cooperate with the second avoidance slot, and the second raised section slides in the second slide slot to prevent the second elastic block from disengaging from the second avoidance slot.

2. A high pressure large diameter ball valve according to claim 1, characterized in that: The inner diameter of the first baffle portion is smaller than the inner diameter of the first slide groove portion, so that a first table surface is formed at the junction of the first baffle portion and the first slide groove portion; the outer diameter of the second baffle portion is larger than the outer diameter of the second slide groove portion, so that a second table surface is formed at the junction of the second baffle portion and the second slide groove portion; the outer ring of the force storage torsion spring is provided with an outer arc stopper, which is slidably arranged on the inner side of the first slide groove portion, and when the outer arc stopper moves to abut against the first table surface, it prevents the outer ring of the force storage torsion spring from further rotation; the inner ring of the force storage torsion spring is provided with an inner arc stopper, which is slidably arranged on the outer side of the second slide groove portion, and when the inner arc stopper moves to abut against the second table surface, it prevents the inner ring of the force storage torsion spring from further rotation.

3. A high-pressure large-diameter ball valve according to claim 2, characterized in that: The first elastic card block is arranged on the outside of the outer arc stop block, and the second elastic card block is arranged on the inside of the inner arc stop block; the first elastic card block and the second elastic card block have the same structure, both including a first tension spring and a card block, and when the first protrusion section moves to deviate from the first avoidance slot or the second protrusion section moves to deviate from the second avoidance slot, the first tension spring causes the card block to disengage from the side wall of the first slide slot or the second slide slot, thereby causing the force storage torsion spring to push the first protrusion section or the second protrusion section to move through the card block, thereby causing the rotating shell to rotate.

4. A high pressure large diameter ball valve according to claim 1, characterized in that: The inner circle of the first inner cylinder is provided with a limiting groove, and the outer circumference of the rotating shaft is provided with a stop block, which is slidably installed in the limiting groove, so that the rotating shaft can only reciprocate within a first preset angle range.

5. A high-pressure large-diameter ball valve according to claim 4, characterized in that: The rotating shell also includes a cover plate, which connects the ends of the second outer cylinder and the second inner cylinder; a mounting groove arranged along the radial direction of the second inner cylinder is arranged in the cover plate, and the mounting groove communicates with the inner ring of the second inner cylinder and the outer ring of the second outer cylinder; an arc platform is also arranged on the outer circumference of the rotating shaft, and the angle of the arc platform in the circumferential direction of the rotating shaft is a second preset angle, and the second preset angle is less than 270°, and the two end surfaces of the arc platform in the circumferential direction of the rotating shaft are respectively perpendicular to the outer circumferential surface of the rotating shaft; a clearance groove is arranged on the inner wall of the first outer cylinder, and the clearance groove is coaxial with the first outer cylinder, and the angle of the clearance groove in the circumferential direction of the first outer cylinder is a third preset angle, and the third preset angle is the second preset angle. The difference between the angle and the first preset angle; the transmission assembly includes a telescopic sleeve and a second tension spring, the telescopic sleeve is slidably installed in the installation groove, and the two ends are respectively abutted against the rotating shaft and the inner wall of the first outer cylinder, at this time, the transmission assembly is in an extended state; the two ends of the second tension spring are respectively connected to the telescopic sleeve and the cover plate, and the second tension spring prompts the telescopic sleeve to move away from the rotating shaft; when the rotating shell drives the telescopic sleeve to move to abut against the arc table, it drives the rotating shaft to rotate synchronously, and after the rotating shaft rotates the first preset angle, the second tension spring prompts the telescopic sleeve to move outward to the give way groove, so that the telescopic sleeve is out of contact with the rotating shaft, at this time, the transmission assembly is in a recovered state.

6. A high-pressure large-diameter ball valve according to claim 5, characterized in that: The telescopic sleeve comprises an inner rod, an outer rod and a spring. The inner rod and the outer rod are both slidably mounted in the mounting groove and connected by a spring. The inner rod is located on the side of the outer rod close to the rotating shaft. The spring makes the inner rod abut against the rotating shaft and the outer rod abut against the inner wall of the first outer tube in a naturally extended state. The second tension spring connects the cover plate and the outer rod, and moves the telescopic sleeve as a whole away from the rotating shaft by pulling the outer rod.

7. A high pressure large diameter ball valve according to claim 1, characterized in that: There are multiple force-storing torsion springs, which are arranged in sequence along the axial direction of the rotating shaft. There are multiple corresponding first slide grooves, second slide grooves, first protruding sections and second protruding sections. The first avoidance grooves on the multiple first slide grooves are distributed in sequence in the circumferential direction of the intermediate cylinder, and the second avoidance grooves on the multiple second slide grooves are distributed in sequence in the circumferential direction of the first inner cylinder.

8. A high pressure large diameter ball valve according to claim 5, characterized in that: It also includes a hand wheel, which is fixedly connected to the cover plate.

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