Flow metering ball valve

Abstract

The invention relates to the technical field of valves, and discloses a flow metering ball valve which comprises a spherical plug valve, a flow meter is fixedly connected to the top of the spherical plug valve, an outer sleeve is fixedly connected to the outer portion of the spherical plug valve, a rotating shaft is rotatably connected to the interior of the outer sleeve, and an installation anti-falling mechanism is arranged in the rotating shaft. A rotating handle is fixedly connected to the side, away from the spherical plug valve, of the installation anti-disengaging mechanism, a switch distinguishing mechanism is arranged on the side, close to the spherical plug valve, of the outer portion of the rotating handle, and a one-way rotation relieving mechanism is arranged on the periphery of the rotating handle. Opening or closing of the valve can be distinguished through cooperation of the switch distinguishing mechanism and the single-phase rotation relieving mechanism, then the situation that the valve is not closed or opened in time due to unskilled operation of workers is avoided, the situation that the valve is opened due to accidental touch or accidents can be prevented, and material loss caused by valve leakage is avoided; meanwhile, potential safety hazards are avoided, and economic loss and personal or property damage are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a flow metering ball valve. Background Art

[0002] A flow metering ball valve is a device that combines the functions of a ball valve and a flow meter. It can not only control the flow of fluid, but also measure the flow rate of the fluid. This type of ball valve usually has a built-in flow meter that can monitor and record the flow of fluid through the valve in real time.

[0003] When the flow meter ball valve in the prior art is opened or closed, it is necessary to turn the handle to open or close the ball valve, but some unskilled operators are prone to operating errors, resulting in untimely closing or opening. At the same time, it is also impossible to prevent the valve from being opened due to accidental touch, causing valve leakage, resulting in material loss, and even causing safety hazards, thereby causing economic losses or threats to life and property. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a flow metering ball valve, which solves the problems in the prior art that unskilled operators are prone to operating errors, resulting in untimely closing or opening, and the valve cannot be opened by accidental contact, causing valve leakage, material loss, and even safety hazards.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a flow metering ball valve, including a spherical plug valve, a flow meter is fixedly connected to the top of the spherical plug valve, a sleeve is fixedly connected to the outside of the spherical plug valve, a rotating shaft is rotatably connected to the inside of the sleeve, an anti-slip mechanism is arranged inside the rotating shaft, a turning handle is fixedly connected to the side of the anti-slip mechanism away from the spherical plug valve, a switch identification mechanism is arranged on the outside of the turning handle close to the spherical plug valve, a one-way rotation release mechanism is arranged on the periphery of the turning handle, and the anti-slip mechanism is used to control the switch of the spherical plug valve after the turning handle is rotated. At the same time, the switch identification mechanism will not block when closing, and the switch identification mechanism is used to block when opening the spherical plug valve, and the one-way rotation release mechanism can release the blockage of the switch identification mechanism.

[0006] Preferably, the switch identification mechanism includes a mounting sleeve, a side of the mounting sleeve away from the ball plug valve is fixedly connected to a side of the rotating handle close to the ball plug valve, the outside of the mounting sleeve is fixedly connected with a mounting fixing sleeve, the inside of the mounting fixing sleeve is rotatably connected with a rotating rod, the side of the rotating rod close to the rotating handle is fixedly connected with the rotating handle, the outside of the rotating rod is fixedly connected with a claw, the end of the rotating rod away from the rotating handle is fixedly connected to a limiting disk, the inside of the mounting fixing sleeve is provided with a torsion spring, the outside of the outer sleeve is fixedly connected with a locking wheel, and the locking wheel is engaged with the locking claw.

[0007] Preferably, the one-way rotation release mechanism includes a rotating ring, the inner side of the rotating ring is rotatably connected to the outside of the turning handle, the outside of the rotating ring is fixedly connected to a plurality of fixed blocks, one of the fixed blocks is fixedly connected to a pressure rod on the side away from the turning handle, the outside of the rotating ring is fixedly connected to a fixed cylinder, the inside of the fixed cylinder is slidably connected to a limiting circular block, the middle part of the limiting circular block is fixedly connected to a clamping column, the top of the clamping column is fixedly connected to a pull ring, a reset spring is provided inside the fixed cylinder, two clamping holes are provided inside the turning handle, and the bottom of the clamping column is engaged with the inside of the clamping hole.

[0008] Preferably, the installation anti-slip mechanism includes an insertion groove, the insertion groove is opened inside the rotating shaft, the inner wall of the rotating shaft is provided with a locking groove, the interior of the insertion groove is provided with a hexagonal column, the interior of the hexagonal column is provided with an installation groove, the interior of the installation groove is provided with an ejection spring, the interior of the installation groove is slidably connected to a limited sliding plate, the top of the limited sliding plate is fixedly connected with a locking head, and the top of the locking head is engaged with the locking groove.

[0009] Preferably, one end of the rotating rod away from the rotating handle is fixedly connected to a limiting disk, and the mounting sleeve is sleeved on the outside of the outer sleeve.

[0010] Preferably, one end of the torsion spring is fixedly connected to the outside of the rotating rod, and the other end of the torsion spring is fixedly connected to the inside of the mounting sleeve.

[0011] Preferably, one end of the return spring is fixedly connected to the inside of the top end of the fixed cylinder, and the other end of the return spring is fixedly connected to the top of the limiting circular block.

[0012] Preferably, the clamping column passes through the middle of the fixing tube, and the bottom of the clamping column passes through the interior of the rotating ring.

[0013] Preferably, one end of the ejection spring is fixedly connected to the inner wall of the mounting groove, and the other end of the ejection spring is fixedly connected to an end of the limiting sliding plate away from the engaging head.

[0014] Preferably, the engaging groove is communicated with the inserting groove, and a side of the engaging head away from the ejection spring passes through the interior of the hexagonal column.

[0015] The present invention provides a flow metering ball valve having the following beneficial effects: 1. The present invention can distinguish whether the valve is opened or closed through the cooperation of the switch distinguishing mechanism and the single-phase rotation releasing mechanism, thereby avoiding the untimely closing or opening of the valve due to the unskilled operation of the staff, and can prevent the valve from being opened due to accidental contact or accident, and avoid valve leakage, which may cause material loss, and at the same time avoid safety hazards, economic losses and personal or property damage.

[0016] 2. The present invention can remove the handle from the valve by installing an anti-drop mechanism, thereby preventing malicious opening or closing of the valve, improving the safety of valve use, and further improving the practicability of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a structural schematic diagram of the installation frame in the present invention; Figure 3 It is a structural schematic diagram of the rotating shaft in the present invention; Figure 4 It is a structural schematic diagram of the insertion slot in the present invention; Figure 5 It is a schematic diagram of the structure of the hexagonal column in the present invention; Figure 6 It is a structural schematic diagram of the rotating rod in the present invention; Figure 7 It is a structural schematic diagram of the clamping column in the present invention; Figure 8 It is a structural schematic diagram of the clamping head in the present invention.

[0018] Among them, 1. ball plug valve; 2. flow meter; 3. outer sleeve; 4. rotating shaft; 5. switch identification mechanism; 501. installation sleeve; 502. installation fixing sleeve; 503. rotating rod; 504. rotating handle; 505. claw; 506. limit plate; 507. torsion spring; 508. engaging wheel; 6. one-way rotation release mechanism; 601. rotating ring; 602. fixed block; 603. pressure rod; 604. fixed cylinder; 605. reset spring; 606. limit round block; 607. clamping column; 608. pull ring; 609. clamping hole; 7. installation anti-slip mechanism; 701. insertion groove; 702. engaging groove; 703. hexagonal column; 704. installation groove; 705. ejection spring; 706. limit sliding plate; 707. engaging head; 8. rotating handle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification 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.

[0020] Please see attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a flow metering ball valve, including a spherical plug valve 1, a flow meter 2 is fixedly connected to the top of the spherical plug valve 1, and the flow meter 2 can detect the flow. The outer part of the spherical plug valve 1 is fixedly connected to a jacket 3, and the jacket 3 improves stability and can also have a certain sealing effect. The inner part of the jacket 3 is rotatably connected to a rotating shaft 4, and an anti-slip mechanism 7 is installed inside the rotating shaft 4. After the anti-slip mechanism 7 is pulled out of the rotating shaft 4, it is inconvenient to open or close the spherical plug valve 1. The anti-slip mechanism 7 is fixedly connected to a rotating handle 8 on the side away from the spherical plug valve 1. The turning handle 8 can conveniently open or close the ball plug valve 1. A switch distinguishing mechanism 5 is arranged on the side of the outer side of the turning handle 8 close to the ball plug valve 1. The switch distinguishing mechanism 5 can prevent the ball plug valve 1 from being opened incorrectly or accidentally. A one-way rotation releasing mechanism 6 is arranged on the outer periphery of the turning handle 8. After the turning handle 8 is rotated, the switch of the ball plug valve 1 is controlled by installing the anti-slip mechanism 7. At the same time, the switch distinguishing mechanism 5 will not block when closing. When the ball plug valve 1 is opened, the switch distinguishing mechanism 5 is used to block. The one-way rotation releasing mechanism 6 can release the blockage of the switch distinguishing mechanism 5.

[0021] The switch identification mechanism 5 includes a mounting frame 501, which can provide a mounting position. The side of the mounting frame 501 away from the ball cock 1 is fixedly connected to the side of the handle 8 close to the ball cock 1. The outside of the mounting frame 501 is fixedly connected with a mounting fixing sleeve 502, which provides an installation space. The inside of the mounting fixing sleeve 502 is rotatably connected with a rotating rod 503, which can play a mounting role and a driving role. The side of the rotating rod 503 close to the handle 8 is fixedly connected with a rotating handle 504, which can The rotating rod 503 is driven to rotate. The outside of the rotating rod 503 is fixedly connected with a claw 505. The end of the rotating rod 503 away from the rotating handle 8 is fixedly connected to a limiting disk 506. A torsion spring 507 is arranged inside the mounting and fixing sleeve 502. The outside of the outer sleeve 3 is fixedly connected with a locking wheel 508. The claw 505 can be engaged with the locking wheel 508 to prevent the rotating handle 8 from directly rotating to open the spherical plug valve 1. The locking wheel 508 is engaged with the claw 505. The end of the rotating rod 503 away from the rotating handle 8 is fixedly connected to the limiting disk 506. The mounting sleeve 501 is sleeved on the outside of the outer sleeve 3. The torsion spring 507 is fixedly connected to the outside of the rotating rod 503 at one end, and the other end of the torsion spring 507 is fixedly connected to the inside of the mounting sleeve 502. When the rotating handle 8 is turned counterclockwise to close the ball cock 1, since the tooth surface of the engaging wheel 508 is an inclined surface, when the claw 505 rotates around the engaging wheel 508, the claw 505 rotates upward under the action of the inclined surface, and then the rotating rod 503 can be driven to rotate. After the rotating rod 503 rotates, the torsion spring 507 can store force, and when the claw 505 moves to the tooth surface of the engaging wheel 508, the claw 505 can rotate upward. When the ball cock 1 is opened, the side of the claw 505 away from the rotating rod 503 will abut against the straight surface of the tooth surface of the engaging wheel 508, so that the mounting sleeve 501 cannot rotate around the outer sleeve 3 under the obstruction of the claw 505, and then the handle 8 cannot rotate. Therefore, the ball cock 1 can be prevented from being opened by mistake or by accident, and it can also be prevented from being opened by mistake due to unskilled operation of the staff.

[0022] The one-way rotation release mechanism 6 includes a rotating ring 601, which provides an installation position and can drive the structure thereon to rotate. The inner side of the rotating ring 601 is rotatably connected to the outside of the rotating handle 8. The outside of the rotating ring 601 is fixedly connected with multiple fixed blocks 602. The fixed blocks 602 facilitate the rotation of the rotating ring 601. One of the fixed blocks 602 is fixedly connected with a pressure rod 603 on the side away from the rotating handle 8. The pressure rod 603 presses the rotating handle 504. The outside of the rotating ring 601 is fixedly connected with a fixed cylinder 604. The fixed cylinder 604 provides an installation position. The inside of the fixed cylinder 604 is slidably connected to a limited position circular block 606. The middle of the limited position circular block 606 is fixedly connected with a clamping column 607. The top of the clamping column 607 A pull ring 608 is fixedly connected, and the pull ring 608 facilitates pulling the clamping column 607. A reset spring 605 is arranged inside the fixed cylinder 604. Two clamping holes 609 are arranged inside the rotating handle 8. The bottom of the clamping column 607 is engaged with the inside of the clamping hole 609. After the clamping column 607 is engaged with the clamping hole 609, the rotating ring 601 is prevented from rotating. One end of the reset spring 605 is fixedly connected to the top of the fixed cylinder 604, and the other end of the reset spring 605 is fixedly connected to the top of the limiting round block 606. The clamping column 607 passes through the middle of the fixed cylinder 604, and the bottom of the clamping column 607 passes through the inside of the rotating ring 601. If it is necessary to open the spherical plug valve 1, first pull the pull ring 608 upwards, and then The pull ring 608 can be used to drive the clamping column 607 to move upward, and the limiting round block 606 can be used to move upward, and the limiting round block 606 can be used to compress the return spring 605. At this time, since the clamping column 607 moves upward and moves out of the clamping hole 609, there is no engagement between the clamping column 607 and the clamping hole 609. Then, without the obstruction of the clamping column 607, the fixing block 602 can be used to rotate the rotating ring 601, and then the fixing block 602 can be used to drive the pressure rod 603 to rotate, and the pressure rod 603 can be used to move the rotating handle 504 downward, and then the rotating rod 503 can be used to drive the claw 505 to rotate upward, so that the engagement between the claw 505 and the engaging wheel 508 can be released. At the same time, when the rotating ring 601 rotates, it can drive the fixed cylinder 604, the reset spring 605, the limit round block 606 and the clamping column 607 to rotate. When the clamping column 607 rotates to another clamping hole 609 on the rotating handle 8, the pull ring 608 is released, so that the limit round block 606 can be driven to move downward under the action of the reset spring 605, and then the clamping column 607 can be driven to move downward, and then the clamping column 607 and the clamping hole 609 can be engaged to prevent the pressure rod 603 from resetting. At this time, the rotating handle 8 can be rotated clockwise, and the anti-slip mechanism 7 can be driven by the rotating handle 8 to rotate clockwise, which can drive the rotating shaft 4 to rotate clockwise to complete the opening of the ball cock 1.

[0023] The installation anti-slip mechanism 7 includes an insertion groove 701, which provides an installation space. The insertion groove 701 is arranged inside the rotating shaft 4. The inner wall of the rotating shaft 4 is provided with a snap-fitting groove 702, which can provide a snap-fitting space. The insertion groove 701 is provided with a hexagonal column 703. After the hexagonal column 703 is placed into the insertion groove 701, the rotating shaft 4 can be rotated. The hexagonal column 703 is provided with an installation groove 704, which provides an installation space. The installation groove 704 is provided with an ejection spring 705. The internal sliding connection of the installation groove 704 is connected to a limited sliding plate 706, and the top of the limited sliding plate 706 is fixedly connected with The locking head 707 and the ejection spring 705 can provide the power for the limiting sliding plate 706 to return to the original position, so that the locking head 707 can automatically engage with the locking groove 702 when it moves to the locking groove 702. The top of the locking head 707 engages with the locking groove 702. One end of the ejection spring 705 is fixedly connected to the inner wall of the installation groove 704. The other end of the ejection spring 705 is fixedly connected to the end of the limiting sliding plate 706 away from the locking head 707. The locking groove 702 is connected to the insertion groove 701. The side of the locking head 707 away from the ejection spring 705 passes through the interior of the hexagonal column 703. When opening or closing the valve, the hexagonal column 703 is first The engaging head 707 on 703 is aligned with the engaging groove 702, and the hexagonal column 703 is inserted into the interior of the insertion groove 701. Since the top of the engaging head 707 is a curved surface, the engaging head 707 can be squeezed into the interior of the installation groove 704 under the pressure of the inner wall of the insertion groove 701, so that the engaging head 707 can be used to drive the limiting sliding plate 706 to move downward, and the limiting sliding plate 706 is used to compress the ejection spring 705. When the engaging head 707 moves to the engaging groove 702, the limiting sliding plate 706 can be driven to move upward under the action of the ejection spring 705, and then the limiting sliding plate 706 and the engaging head 70 7 moves upward, and then the engaging head 707 can be engaged with the inside of the engaging groove 702, so that the anti-slipping mechanism 7 and the turning handle 8 can be installed in the inside of the rotating shaft 4, and the turning handle 8 can be turned to control the opening or closing of the ball plug valve 1. When the turning handle 8 is removed, the turning handle 8 can be pulled outward, so that the engaging head 707 can be squeezed into the inside of the installation groove 704, and then the turning handle 8 can be removed from the inside of the rotating shaft 4. Therefore, when there is no turning handle 8 connected to the anti-slipping mechanism 7, the ball plug valve 1 cannot be opened or closed, thereby preventing the ball plug valve 1 from being maliciously opened, thereby improving the safety of the ball plug valve 1.

[0024] Working principle: When opening or closing the valve, first align the locking head 707 on the hexagonal column 703 with the locking groove 702, and insert the hexagonal column 703 into the interior of the insertion groove 701. Since the top of the locking head 707 is a curved surface, the locking head 707 can be squeezed into the interior of the installation groove 704 under the extrusion of the inner wall of the insertion groove 701, so that the locking head 707 can be used to drive the limiting sliding plate 706 to move downward, and the limiting sliding plate 706 is used to compress the ejection spring 705. When the locking head 707 moves to the locking groove 702, the ejection spring 705 can drive the limiting sliding plate 706 to move upward, and then the limiting sliding plate 706 can be driven to move downward. The movable plate 706 and the engaging head 707 move upward, and then the engaging head 707 can be engaged with the inside of the engaging groove 702, so that the installation anti-slip mechanism 7 and the turning handle 8 can be installed in the inside of the rotating shaft 4, and the turning handle 8 can be turned to control the opening or closing of the ball cock 1. When the turning handle 8 is removed, the turning handle 8 can be pulled outward, so that the engaging head 707 can be squeezed into the inside of the installation groove 704, and then the turning handle 8 can be removed from the inside of the rotating shaft 4. Therefore, when there is no turning handle 8 connected to the installation anti-slip mechanism 7, the ball cock 1 cannot be opened or closed, thereby preventing the ball cock 1 from being maliciously opened, thereby improving the safety of the ball cock 1; When the handle 8 is turned counterclockwise to close the ball cock 1, since the tooth surface of the engaging wheel 508 is an inclined surface, when the claw 505 rotates around the engaging wheel 508, the claw 505 is rotated upward under the action of the inclined surface, and then the rotating rod 503 is driven to rotate. After the rotating rod 503 rotates, it can store force for the torsion spring 507, and when the claw 505 moves to the straight surface of the tooth surface of the engaging wheel 508, the rotating rod 503 is reversed under the action of the torsion spring 507, thereby The claw 505 is driven to reset and engage with the tooth surface of the engaging wheel 508 again. When the ball cock 1 is to be opened, the side of the claw 505 away from the rotating rod 503 will abut against the straight surface of the tooth surface of the engaging wheel 508. As a result, the mounting sleeve 501 cannot rotate around the outer sleeve 3 under the obstruction of the claw 505, and the handle 8 cannot rotate. This can prevent the ball cock 1 from being opened by mistake or by accident, and also prevent the staff from opening it by mistake due to unskilled operation. If the ball-shaped plug valve 1 needs to be opened, the pull ring 608 is first pulled upward, and then the pull ring 608 can drive the clamping column 607 to move upward, and drive the limiting round block 606 to move upward, and use the limiting round block 606 to compress the return spring 605. At this time, since the clamping column 607 moves upward and moves out of the clamping hole 609, there is no engagement between the clamping column 607 and the clamping hole 609. Then, without the obstruction of the clamping column 607, the fixing block 602 can be used to rotate the rotating ring 601, and then the fixing block 602 can be used to drive the pressure rod 603 to rotate, and the pressure rod 603 can be used to move the rotating handle 504 downward, and then the rotating rod 503 can be used to drive the claw 505 to rotate upward, so that The engagement between the claw 505 and the engaging wheel 508 is released. At the same time, when the rotating ring 601 rotates, it can drive the fixed cylinder 604, the reset spring 605, the limiting round block 606 and the clamping column 607 to rotate. When the clamping column 607 rotates to another clamping hole 609 on the rotating handle 8, the pull ring 608 is released, so that the limiting round block 606 can be driven to move downward under the action of the reset spring 605, and then the clamping column 607 can be driven to move downward, and then the clamping column 607 and the clamping hole 609 can be engaged to prevent the pressure rod 603 from resetting. At this time, the rotating handle 8 can be rotated clockwise, and the anti-slip mechanism 7 can be driven by the rotating handle 8 to rotate clockwise, which can drive the rotating shaft 4 to rotate clockwise to complete the opening of the ball cock 1.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flow metering ball valve, comprising a spherical plug valve (1), characterized in that: The top of the ball cock (1) is fixedly connected to a flow meter (2); the outside of the ball cock (1) is fixedly connected to a jacket (3); the inside of the jacket (3) is rotatably connected to a rotating shaft (4); an anti-slipping mechanism (7) is arranged inside the rotating shaft (4); a rotating handle (8) is fixedly connected to the side of the anti-slipping mechanism (7) away from the ball cock (1); a switch distinguishing mechanism (5) is arranged on the outside of the rotating handle (8) near the ball cock (1); a one-way rotating contact mechanism (6) is arranged on the periphery of the rotating handle (8); after the rotating handle (8) is rotated, the anti-slipping mechanism (7) is used to control the switch of the ball cock (1); at the same time, the switch distinguishing mechanism (5) will not block when closing; when the ball cock (1) is opened, the switch distinguishing mechanism (5) is used to block; and the one-way rotating release mechanism (6) can release the blockage of the switch distinguishing mechanism (5).

2. A flow metering ball valve according to claim 1, characterized in that: The switch distinguishing mechanism (5) comprises a mounting frame (501), wherein a side of the mounting frame (501) away from the ball cock (1) is fixedly connected to a side of the rotating handle (8) close to the ball cock (1), an outside of the mounting frame (501) is fixedly connected to a mounting fixing sleeve (502), an inside of the mounting fixing sleeve (502) is rotatably connected to a rotating rod (503), a side of the rotating rod (503) close to the rotating handle (8) is fixedly connected to a rotating handle (504), an outside of the rotating rod (503) is fixedly connected to a clamping claw (505), an end of the rotating rod (503) away from the rotating handle (8) is fixedly connected to a limiting disk (506), a torsion spring (507) is provided inside the mounting fixing sleeve (502), and an outside of the outer sleeve (3) is fixedly connected to a locking wheel (508), the locking wheel (508) is engaged with the locking claw (505).

3. A flow metering ball valve according to claim 1, characterized in that: The one-way rotation release mechanism (6) comprises a rotating ring (601), the inner side of the rotating ring (601) is rotatably connected to the outside of the rotating handle (8), the outer side of the rotating ring (601) is fixedly connected to a plurality of fixed blocks (602), one of the fixed blocks (602) being fixedly connected to a pressure rod (603) on a side away from the rotating handle (8), the outer side of the rotating ring (601) is fixedly connected to a fixed cylinder (604), the inner side of the fixed cylinder (604) is slidably connected to a limiting circular block (606), the middle part of the limiting circular block (606) is fixedly connected to a clamping column (607), the top of the clamping column (607) is fixedly connected to a pull ring (608), a reset spring (605) is arranged inside the fixed cylinder (604), and two clamping holes (609) are provided inside the rotating handle (8), the bottom of the clamping column (607) is engaged with the inner side of the clamping hole (609).

4. A flow metering ball valve according to claim 1, characterized in that: The installation anti-slip mechanism (7) comprises an insertion groove (701), the insertion groove (701) is provided inside the rotating shaft (4), the inner wall of the rotating shaft (4) is provided with a snap-fit ​​groove (702), a hexagonal column (703) is provided inside the insertion groove (701), a mounting groove (704) is provided inside the hexagonal column (703), an ejection spring (705) is provided inside the mounting groove (704), a limited sliding plate (706) is slidably connected inside the mounting groove (704), a snap-fit ​​head (707) is fixedly connected to the top of the limited sliding plate (706), and the top of the snap-fit ​​head (707) is snap-fitted with the snap-fit ​​groove (702).

5. A flow metering ball valve according to claim 2, characterized in that: One end of the rotating rod (503) away from the rotating handle (8) is fixedly connected to a limiting plate (506), and the mounting sleeve (501) is sleeved on the outside of the outer sleeve (3).

6. A flow metering ball valve according to claim 2, characterized in that: One end of the torsion spring (507) is fixedly connected to the outside of the rotating rod (503), and the other end of the torsion spring (507) is fixedly connected to the inside of the mounting and fixing sleeve (502).

7. A flow metering ball valve according to claim 3, characterized in that: One end of the return spring (605) is fixedly connected to the inside of the top end of the fixed cylinder (604), and the other end of the return spring (605) is fixedly connected to the top of the limiting circular block (606).

8. A flow metering ball valve according to claim 3, characterized in that: The clamping column (607) passes through the middle of the fixed cylinder (604), and the bottom of the clamping column (607) passes through the interior of the rotating ring (601).

9. A flow metering ball valve according to claim 4, characterized in that: One end of the ejection spring (705) is fixedly connected to the inner wall of the installation groove (704), and the other end of the ejection spring (705) is fixedly connected to an end of the limiting sliding plate (706) away from the locking head (707).

10. A flow metering ball valve according to claim 4, characterized in that: The engaging groove (702) is connected to the insertion groove (701), and the side of the engaging head (707) away from the ejection spring (705) penetrates the interior of the hexagonal column (703).

Images