Ball valve capable of adjusting tightness

Abstract

The utility model discloses a ball valve capable of adjusting tightness, which belongs to the technical field of ball valves, and comprises a valve body, an opposite mechanism is fixedly connected outside a lantern ring, a limiting mechanism is arranged in the valve body, an unlocking mechanism is rotatably connected outside a fixed shaft, and the limiting mechanism is fixedly connected outside the fixed shaft. And a positioning mechanism is rotationally connected to the outer part of the valve body. The gear disc drives the racks to move oppositely, the sealing ring is pushed to be tightly attached to the ball body, the tightness between the sealing ring and the ball body is effectively adjusted, it is ensured that the sealing performance is stable, and particularly the good sealing effect can still be kept after long-term use; the tightness of the sealing ring can be adjusted by rotating the handle, the operation is simple and visual, complex tools or valve disassembly are not needed, and the adjusting efficiency is remarkably improved; and the fluted disc is limited to only rotate in one direction through matching of the convex block and the groove III, so that the sealing ring is prevented from loosening due to reverse adjustment, and the sealing ring is kept at a stable position after being adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, especially a kind of ball valve capable of adjusting tightness. BACKGROUND

[0002] In fluid control system, ball valve is widely used as a common control element due to its simple structure, convenient operation, small fluid resistance and other characteristics;The basic structure of traditional ball valve usually includes valve body, ball and sealing ring located on both sides of ball;Ball is rotatably connected in valve body, and fluid passage can be opened or closed by rotating ball;And sealing ring plays a crucial role, they are fixed in valve body, and tightly contact with ball, so as to ensure that valve can effectively prevent fluid leakage in closed state, realize sealing effect.

[0003] However, although the ball valve of this structure can provide good sealing performance at initial installation, its shortcomings gradually appear in long-term use process;Especially in some harsh environments, such as high temperature, high pressure, corrosive medium, etc., sealing ring is easily affected by physical and chemical effects, leading to material aging, wear and even loosening;Once the tight contact state between sealing ring and ball is destroyed, the sealing performance of ball valve will be greatly reduced, thereby increasing the risk of fluid leakage;Specifically, after loosening or wearing of sealing ring, the gap between sealing ring and ball will increase, so that fluid medium may leak through these small gaps;Such leakage not only causes waste of resources, but also may pollute production environment, and even may cause safety accident in serious case;Especially in some occasions with high requirements for fluid control accuracy and safety, such as chemical industry, petroleum, natural gas and other industries, the decline of sealing performance of ball valve will directly threaten the stable operation of production system.

[0004] Therefore, it is urgent to provide a ball valve capable of adjusting tightness to solve the above problems. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a ball valve capable of adjusting tightness.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a ball valve capable of adjusting tightness, including valve body, ball rotatably connected in valve body, sealing ring in contact with both sides of ball respectively installed in valve body, pipe installed on both sides of valve body, and sleeve ring fixedly connected to the outer side of two sealing rings respectively, and the outer part of two sleeve rings is respectively slidably connected with the inner part of two pipes.

[0007] The collar is fixedly connected to an opposing mechanism, the valve body is provided with a limiting mechanism, the front and rear ends of the valve body are fixedly connected to a fixed shaft, the fixed shaft is rotatably connected to an unlocking mechanism, and the valve body is rotatably connected to a positioning mechanism.

[0008] The present invention is further configured such that: a second shaft that is rotatably connected to the top of the ball is fixedly connected to the top of the valve body, a rotating rod is fixedly connected to the top of the second shaft, and a through hole is provided inside the ball.

[0009] Through the above technical solution, the main function of the rotating rod is to drive the ball to rotate; when the rotating rod deflects, it will drive the second shaft to rotate, and the rotation of the second shaft will then cause the ball to rotate; the through hole design is to allow the liquid to flow smoothly. This structure is convenient, quick and very practical.

[0010] The present invention is further configured such that: the opposing mechanism includes multiple blocks two fixedly connected to the front and rear ends of the two collars respectively; each of the multiple blocks two is fixedly connected to a rack at the end away from the ball; the valve body is fixedly connected to a first bracket located at the front and rear ends of the ball respectively; the two first brackets are slidably connected to the multiple racks respectively; the ends of the two first brackets away from the ball are fixedly connected to a fixed shaft; the outside of the two fixed shafts is rotatably connected to a gear plate; the top and bottom of the two gear plates respectively mesh with the multiple racks.

[0011] The aforementioned technical solution utilizes a counter-rotating mechanism designed to ensure that the sealing rings on both sides of the ball are tightly fitted to the ball, maintaining continuous contact between them. After long-term operation of the ball valve, the sealing rings may wear or loosen, affecting the sealing effect. To adjust the tightness between the sealing rings and the ball, the gear disc can be rotated. The gear disc rotates on a fixed shaft, driving two racks to move towards each other, which in turn pushes the two blocks closer together and causes the collar to move towards each other, causing the sealing rings on both sides to move closer to the ball until the sealing rings are in tight contact and abut against the ball, thus completing the adjustment of the tightness. This design ensures that the sealing rings always maintain contact with the ball, improving the stability of the seal. In addition, a gear disc is set at each of the front and rear ends, further enhancing the tightness and stability of the sealing rings fitting the ball. The operation is simple, practical, and efficient.

[0012] The present invention is further configured such that: the limiting mechanism includes two circular blocks respectively fixedly connected to the outside of two fixed shafts, each of the two circular blocks having a groove II on its top, and a protrusion rotatably connected to each of the two groove IIs, and a spring being provided between each of the two protrusions and the two groove IIs, the two ends of the spring being fixedly connected to the free end of the protrusion and the bottom of the groove II respectively, and a ring being fixedly connected to the end of each of the two gear discs away from the sphere, and a plurality of groove IIIs corresponding to a plurality of protrusions being opened on the inner wall of each of the two rings respectively.

[0013] Through the above technical solution, the function of the limiting mechanism is to temporarily and simply lock the rotated gear disk. When the gear disk rotates, it drives the ring to rotate as well, which in turn drives the groove three to rotate. During this process, the round block remains stationary. Due to the elastic force of the spring, the protrusion on the groove two always remains in a raised state and is embedded in the groove three. When the gear disk moves in a specified direction, multiple grooves three will contact the protrusion one by one, at which time the gear disk can rotate normally. However, when attempting to rotate the gear disk in the opposite direction, the groove three will block the protrusion, preventing it from moving, thus limiting the gear disk to rotate only in one direction, achieving temporary fixation during the rotation of the gear disk. This design further ensures the temporary positioning of the sealing ring, and is convenient, simple, and practical to operate.

[0014] The present invention is further configured such that: a cylinder is fixedly connected to the end of each of the two rings away from the sphere, the two cylinders are rotatably connected to the valve body, and a handle is fixedly connected to the end of each of the two cylinders away from the sphere.

[0015] The cylindrical design, based on the above technical solution, facilitates the rotation of the gear disc. When the gear disc needs to be rotated, the user simply rotates the handle, which causes the cylinder to rotate, thereby driving the ring and the connected gear disc to rotate together. This process is both convenient and quick, and reflects the practicality of the design.

[0016] The present invention is further configured such that: the unlocking mechanism includes two second brackets fixedly connected to the bottom of the two slots respectively; each of the two second brackets is rotatably connected to a shaft four fixedly connected to two protrusions respectively; each of the two fixed shafts is fixedly connected to a third bracket rotatably connected to the two shaft four respectively; and each of the two shaft fours is fixedly connected to a deflection plate at the end away from the sphere.

[0017] Through the above technical solution, the function of the unlocking mechanism is to release the locking state of the protrusion on the unidirectional rotation of the gear disk; when it is necessary to rotate the gear disk in the opposite direction, the user only needs to deflect the deflection plate. This action will drive the shaft four to deflect, thereby causing the protrusion to deflect and move into the groove two, thus releasing the obstruction of the protrusion on the groove three; in this way, the gear disk can rotate freely in the opposite direction; this unlocking process is achieved through a clever mechanical structure design, which is both convenient and quick, and reflects the practicality of the design.

[0018] The present invention is further configured such that: the positioning mechanism includes sleeves fixedly connected to the front and rear ends of the valve body, the two sleeves are rotatably connected to the two cylinders respectively, and bolts are rotatably connected inside the two sleeves, the front ends of the two bolts are in contact with the outside of the cylinders.

[0019] Through the above technical solution, the main function of the positioning mechanism is to permanently fix the gear disc. When it is necessary to maintain the position of the gear disc for a long time, that is, to ensure that the two sealing rings are tightly fitted to the sphere, the user can adjust the gear disc to the required position and then turn the bolt. The front end of the bolt will gradually contact the cylinder and generate a resistance force. Since the sleeve remains fixed, turning the bolt will effectively prevent the cylinder from moving, thereby achieving a stable fixation of the ring, gear disc, rack, block two, collar, and sealing ring. This design facilitates the adjustment of the tightness of the sealing ring, ensuring that the sealing ring is tightly fitted to the sphere. The entire operation process is convenient and quick, and also reflects the practicality of the design.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model uses a geared disc to drive a rack to move in opposite directions, pushing the sealing ring to fit tightly against the sphere, effectively adjusting the tightness between the sealing ring and the sphere, ensuring stable sealing performance, and maintaining a good sealing effect even after long-term use; the tightness of the sealing ring can be adjusted by rotating the handle, which is simple and intuitive to operate, without the need for complicated tools or valve disassembly, significantly improving adjustment efficiency; the cooperation between the protrusion and the groove restricts the geared disc to rotate only in one direction, preventing the sealing ring from loosening due to reverse adjustment, and ensuring that the sealing ring maintains a stable position after adjustment;

[0022] 2. This utility model uses the cooperation of spring and protrusion to achieve temporary locking of the gear disc, ensuring that the sealing ring will not move accidentally during adjustment; when reverse adjustment is required, it can be quickly unlocked by the deflection plate, making the operation flexible and practical; by tightening the cylinder with bolts, the gear disc is permanently fixed, ensuring that the sealing ring and the ball maintain close contact for a long time, avoiding the decline in sealing performance due to vibration or external factors; this design is suitable for various working conditions, can effectively deal with problems such as sealing ring wear and loosening, ensure that the ball valve can operate stably in different environments, and extend its service life. Attached Figure Description

[0023] Figure 1 This is a first-view structural diagram of the present invention;

[0024] Figure 2 This is a second-view sectional view of the present invention;

[0025] Figure 3 for Figure 2 Another sectional view;

[0026] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0027] Figure 5 for Figure 3 Another sectional view;

[0028] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0029] Figure 7 for Figure 5 A magnified view of a section at point C;

[0030] Figure 8 for Figure 5 Another sectional view.

[0031] In the diagram: 1. Valve body; 2. Ball; 3. Sealing ring; 4. Pipe; 5. Collar; 6. Opposing mechanism; 601. Block 2; 602. Rack; 603. First support; 604. Gear disc; 7. Restriction mechanism; 701. Round block; 702. Groove 2; 703. Protrusion; 704. Spring; 705. Ring; 706. Groove 3; 707. Cylinder; 708. Handle; 8. Fixed shaft; 9. Unlocking mechanism; 901. Second support; 902. Shaft 4; 903. Third support; 904. Deflection plate; 10. Positioning mechanism; 1001. Sleeve; 1002. Bolt; 11. Shaft 2; 12. Rotating rod; 13. Through hole. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0033] Please see Figures 1-8 This embodiment of a ball valve capable of adjusting tightness includes a valve body 1, a ball 2 rotatably connected inside the valve body 1, a sealing ring 3 installed inside the valve body 1 that contacts and abuts against both sides of the ball 2, pipes 4 installed on both sides of the valve body 1, and a collar 5 fixedly connected to the outward side of each of the two sealing rings 3, with the outside of the two collars 5 slidably connected to the inside of the two pipes 4 respectively.

[0034] like Figures 3-4As shown, an opposing mechanism 6 is fixedly connected to the outside of the collar 5. The opposing mechanism 6 includes multiple blocks 601 fixedly connected to the front and rear ends of the two collars 5 respectively. Each block 601 has a rack 602 fixedly connected to its end away from the ball 2. First supports 603 are fixedly connected to the front and rear ends of the ball 2 respectively inside the valve body 1. The two first supports 603 are slidably connected to the multiple racks 602 respectively. The ends of the two first supports 603 away from the ball 2 are fixedly connected to the fixed shaft 8. Gear discs 604 are rotatably connected to the outside of the two fixed shafts 8. The top and bottom of the two gear discs 604 respectively mesh with the multiple racks 602. The design of the opposing mechanism 6 is intended to ensure that the sealing rings 3 on both sides of the ball 2 fit tightly against the ball 2 and maintain continuous contact between them. After long-term operation of the ball valve, the sealing ring 3 may become worn or loose, affecting the sealing effect. To adjust the tightness between the sealing ring 3 and the ball 2, the gear disc 604 can be rotated. The gear disc 604 rotates on the fixed shaft 8, driving the two racks 602 to move towards each other, which in turn pushes the two blocks 601 closer together and drives the collar 5 to move towards each other, causing the sealing rings 3 on both sides to move closer to the ball 2 until the sealing rings 3 are in close contact and abut against the ball 2, thus completing the adjustment of the tightness. This design ensures that the sealing ring 3 always maintains contact with the ball 2, improving the stability of the seal. In addition, a gear disc 604 is set at each of the front and rear ends, further enhancing the tightness and stability of the sealing ring 3 against the ball 2. The operation is simple, practical and efficient.

[0035] like Figures 5-7As shown, a limiting mechanism 7 is provided inside the valve body 1. The limiting mechanism 7 includes two circular blocks 701 fixedly connected to the outside of two fixed shafts 8. Each of the two circular blocks 701 has a groove 702 on its top. A protrusion 703 is rotatably connected to each of the two grooves 702. A spring 704 is provided between each of the two protrusions 703 and the two grooves 702. The two ends of the spring 704 are fixedly connected to the free end of the protrusion 703 and the bottom of the groove 702, respectively. A ring 705 is fixedly connected to the end of each of the two geared discs 604 away from the ball 2. Multiple grooves 706, corresponding to multiple protrusions 703, are opened on the inner walls of the two rings 705. The function of the limiting mechanism 7 is to temporarily and simply lock the rotated geared discs 604; when the geared discs 604 rotate, the limiting mechanism 7 can temporarily lock the rotated geared discs 604. 4. When rotating, it will drive the ring 705 to rotate together, which in turn will drive the groove 706 to rotate as well. During this process, the round block 701 remains stationary. Due to the elastic force of the spring 704, the protrusion 703 on the groove 702 always remains in a raised state and is embedded in the groove 706. When the gear disk 604 moves in the specified direction, multiple grooves 706 will contact the protrusions 703 one by one, and the gear disk 604 can rotate normally at this time. However, when trying to rotate the gear disk 604 in the opposite direction, the grooves 706 will block the protrusions 703, making them unable to move, thus restricting the gear disk 604 to rotate in only one direction, realizing the temporary fixation of the gear disk 604 during rotation. This design further ensures the temporary positioning of the sealing ring 3, which is convenient, simple and practical to operate.

[0036] like Figures 5-7 As shown, a cylinder 707 is fixedly connected to the end of each of the two rings 705 away from the ball 2. Both cylinders 707 are rotatably connected to the valve body 1. A handle 708 is fixedly connected to the end of each of the two cylinders 707 away from the ball 2. The design of the cylinder 707 is intended to facilitate the rotation of the gear disc 604. When the gear disc 604 needs to be rotated, the user only needs to rotate the handle 708. This action will cause the cylinder 707 to rotate, thereby driving the rings 705 and the gear disc 604 connected to them to rotate together. This process is both convenient and quick, and it reflects the practicality of the design.

[0037] like Figures 5-7As shown, both ends of the valve body 1 are fixedly connected to fixed shafts 8. Unlocking mechanisms 9 are rotatably connected to the outside of the fixed shafts 8. The unlocking mechanism 9 includes two second brackets 901 fixedly connected to the bottoms of the two slots 702 respectively. Inside each of the two second brackets 901, shafts 902 fixedly connected to two protrusions 703 are rotatably connected. Third brackets 903 fixedly connected to the outside of each of the two fixed shafts 8 are rotatably connected to the two shafts 902 respectively. Deflection plates 904 are fixedly connected to the ends of each shaft 902 away from the ball 2. The function of the unlocking mechanism 9 is to release the locking state of the protrusion 703 on the unidirectional rotation of the gear disk 604. When it is necessary to rotate the gear disk 604 in the opposite direction, the user only needs to deflect the deflection plate 904. This action will drive the shaft 902 to deflect, thereby causing the protrusion 703 to deflect and move into the groove 702, thus releasing the obstruction of the protrusion 703 on the groove 706. In this way, the gear disk 604 can rotate freely in the opposite direction. This unlocking process is achieved through a clever mechanical structure design, which is both convenient and quick, and reflects the practicality of the design.

[0038] like Figures 5-6 As shown, a positioning mechanism 10 is rotatably connected to the outside of the valve body 1. The positioning mechanism 10 includes sleeves 1001 fixedly connected to the front and rear ends of the valve body 1. The two sleeves 1001 are rotatably connected to two cylinders 707 respectively. Bolts 1002 are rotatably connected inside each of the two sleeves 1001. The front ends of the two bolts 1002 abut against the outside of the cylinders 707. The main function of the positioning mechanism 10 is to permanently fix the gear disc 604. When it is necessary to maintain the position of the gear disc 604 for a long time, that is, to ensure that the two sealing rings 3 are tightly fitted to the ball 2, the user can adjust... Move the gear 604 to the desired position, then rotate the bolt 1002; the front end of the bolt 1002 will gradually contact the cylinder 707 and generate a resisting force. Since the sleeve 1001 remains fixed, rotating the bolt 1002 will effectively prevent the cylinder 707 from moving, thereby achieving a stable fixation of the ring 705, gear 604, rack 602, block 2 601, collar 5, and sealing ring 3. This design facilitates the adjustment of the tightness of the sealing ring 3, ensuring that the sealing ring 3 fits tightly with the ball 2. The entire operation process is convenient and quick, and also reflects the practicality of the design.

[0039] like Figures 1-8 As shown, the top of the ball 2 is fixedly connected to the shaft 11, which is rotatably connected to the valve body 1. The top of the shaft 11 is fixedly connected to the rotating rod 12. The ball 2 has a through hole 13 inside. The main function of the rotating rod 12 is to drive the ball 2 to rotate. When the rotating rod 12 deflects, it will drive the shaft 11 to rotate. The rotation of the shaft 11 will then cause the ball 2 to rotate. The through hole 13 is designed to allow the liquid to flow smoothly. This structure is convenient, quick and very practical.

[0040] In use, this invention rotates by rotating the handle 708, which drives the gear disc 604 to rotate. The gear disc 604 drives the rack 602 to move towards each other. The rack 602 pushes the collar 5 closer to the ball 2, so that the sealing rings 3 on both sides fit tightly against the ball 2, thereby adjusting the tightness between the sealing rings 3 and the ball 2. The rotation direction of the gear disc 604 is controlled by the protrusion 703, ensuring that the sealing rings 3 can only be adjusted in one direction to avoid loosening. When the gear disc 604 rotates, the groove 706 on the ring 705 cooperates with the protrusion 703, and the spring 704 causes the protrusion 703 to be embedded in the groove 706, restricting the reverse rotation of the gear disc 604 and achieving temporary positioning of the sealing rings 3. When reverse adjustment is required, the... The deflector plate 904 disengages the protrusion 703 from the groove 706, releasing the locking state. After adjustment, the bolt 1002 is rotated to press its front end against the cylinder 707, restricting the rotation of the cylinder 707 and the gear disc 604, ensuring that the sealing ring 3 and the ball 2 maintain tight contact, achieving a long-term stable sealing effect. The rotating rod 12 drives the shaft 11 to rotate, which in turn drives the ball 2 to rotate, controlling the opening or closing of the through hole 13 of the ball 2, thus achieving fluid flow control or flow regulation. The tightness of the sealing ring 3 can be adjusted and fixed through simple operation, ensuring that the ball valve maintains good sealing performance under different working conditions. The operation is convenient, practical, and efficient.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ball valve capable of adjusting tightness, comprising a valve body (1), wherein a ball (2) is rotatably connected within the valve body (1), and sealing rings (3) are respectively installed within the valve body (1) to contact and abut against both sides of the ball (2), characterized in that: Both sides of the valve body (1) are provided with pipes (4), both of the sealing rings (3) are fixedly connected with collars (5) on the outward side, and the outer parts of the two collars (5) are respectively slidably connected with the interiors of the two pipes (4). The outer part of the collar (5) is fixedly connected with a facing mechanism (6), the valve body (1) is provided with a limiting mechanism (7), and both ends of the valve body (1) are fixedly connected with fixed shafts (8), the outer part of the fixed shaft (8) is rotatably connected with an unlocking mechanism (9), and the outer part of the valve body (1) is rotatably connected with a positioning mechanism (10).

2. A ball valve capable of regulating tightness according to claim 1, characterized in that: The top of the ball (2) is fixedly connected with a shaft two (11) rotatably connected with the valve body (1), the top of the shaft two (11) is fixedly connected with a rotating rod (12), and the interior of the ball (2) is provided with a through hole (13).

3. A ball valve capable of regulating tightness according to claim 1, characterized in that: The facing mechanism (6) comprises a plurality of block twos (601) fixedly connected at the front and back ends of the two collars (5), the ends of the plurality of block twos (601) away from the ball (2) are fixedly connected with racks (602), the valve body (1) is fixedly connected with first supports (603) located at the front and back ends of the ball (2), the two first supports (603) are slidably connected with the plurality of racks (602), the ends of the two first supports (603) away from the ball (2) are fixedly connected with the fixed shafts (8), the outer parts of the two fixed shafts (8) are rotatably connected with toothed discs (604), and the top and bottom parts of the two toothed discs (604) are respectively meshed with the plurality of racks (602).

4. A ball valve capable of regulating tightness according to claim 3, characterized in that: The limiting mechanism (7) comprises two circular blocks (701) fixedly connected on the outer parts of the two fixed shafts (8), the top of each of the two circular blocks (701) is provided with a groove two (702), each of the two groove twos (702) is rotatably connected with a protruding block (703), a spring (704) is arranged between each of the two protruding blocks (703) and the corresponding groove two (702), the two ends of the spring (704) are fixedly connected with the free end of the protruding block (703) and the bottom of the groove two (702), and the ends of the two toothed discs (604) away from the ball (2) are fixedly connected with circular rings (705), and the inner walls of the two circular rings (705) are respectively provided with a plurality of groove threes (706) corresponding to the plurality of protruding blocks (703).

5. A ball valve capable of regulating tightness according to claim 4, characterized in that: The ends of the two circular rings (705) away from the ball (2) are fixedly connected with circular cylinders (707), the two circular cylinders (707) are rotatably connected with the valve body (1), and the ends of the two circular cylinders (707) away from the ball (2) are fixedly connected with handles (708).

6. A ball valve capable of regulating tightness according to claim 4, characterized in that: The unlocking mechanism (9) includes two second supports (901) fixedly connected with the bottoms of the two grooves (702) respectively, two shafts (902) fixedly connected with the two protrusions (703) respectively and rotatably connected in the two second supports (901), third supports (903) rotatably connected with the two shafts (902) respectively and fixedly connected with the outer portions of the two fixed shafts (8), and deflection plates (904) fixedly connected with the ends, away from the sphere (2), of the two shafts (902).

7. A ball valve capable of regulating tightness according to claim 5, characterized in that: The positioning mechanism (10) includes sleeves (1001) fixedly connected to the front and rear ends of the valve body (1), two cylinders (707) rotatably connected with the two sleeves (1001) respectively, bolts (1002) rotatably connected in the two sleeves (1001), and the front ends of the two bolts (1002) in contact with the outer portions of the cylinders (707).

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