Ball valve convenient to install

Abstract

The invention relates to the technical field of ball valves, in particular to a ball valve convenient to install. Comprising a ball valve and a pneumatic actuator connected to the upper portion of the ball valve. The ball valve is connected with a transmission hole in the lower surface of the pneumatic actuator in an inserted mode through a valve rod. The ball valve is in contact connection with the lower surface of the pneumatic actuator through a mounting plate; through holes are formed in four corners of the mounting plate; a plug is movably connected into the through hole; the upper end of the plug extends out of the through hole, and a clamping groove is formed in the outer wall; the bottom of the clamping groove is in arc transition towards the outer wall of the plug. An insertion hole corresponding to the through hole is formed in the lower surface of the pneumatic actuator; the rack is pressed to drive the insertion pin to rotate in the insertion hole to achieve unlocking and dismounting of the pneumatic actuator and the ball valve, the insertion pin is directly inserted into the insertion hole to achieve locking connection of the pneumatic actuator and the ball valve, and compared with bolt connection in the prior art, the mounting and dismounting time of the pneumatic actuator and the ball valve is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, in particular to a ball valve which is easy to install. Background Art

[0002] Pneumatic ball valve is a ball valve equipped with a pneumatic actuator. The execution speed of pneumatic actuator is relatively fast, and the fastest switching speed is 0.05 seconds / time, so it is usually also called pneumatic quick-cut ball valve. Pneumatic ball valves are usually equipped with various accessories, such as solenoid valves, air source processing triplexes, limit switches, positioners, control boxes, etc., to achieve local control and remote centralized control. The valve can be controlled in the control room, without the need to go to the site or high altitude and dangerous places for manual control, which saves human resources, time and safety to a great extent.

[0003] In order to solve the problem of poor sealing of existing pneumatic ball valves, our company has designed and developed a utility model patent with publication number CN211738101U, and the patent name is a pneumatic ball valve with good durability and sealing. This patent uses a designed rubber pad to not only make the connection port more sealed but also protect the connection port from wear, thereby improving the sealing of the pneumatic ball valve.

[0004] However, after our products were put into use, we found that for some pneumatic ball valves that were operated frequently for a long time, the pneumatic actuators in the pneumatic ball valves would fail and be damaged. In order not to affect the use of the pneumatic ball valve, the pneumatic actuators in the pneumatic ball valves are generally replaced without disassembling the ball valve. The ball valves and pneumatic actuators on the current market are connected by bolts, and the operating space between the ball valves and the pneumatic actuators is limited. Under the existing connection method, the process of removing the pneumatic actuator from the ball valve is time-consuming and labor-intensive, which in turn affects the use of the pneumatic ball valve.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a ball valve that is easy to install, which solves the above technical problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art, the present invention proposes a ball valve that is easy to install. The present invention realizes the unlocking and disassembly of the pneumatic actuator and the ball valve by pressing the rack to drive the plug to rotate in the socket, and realizes the locking connection between the pneumatic actuator and the ball valve by directly inserting the plug into the socket. Compared with the bolt connection in the prior art, the installation and disassembly time of the pneumatic actuator and the ball valve is greatly reduced. At the same time, compared with the prior art, the present application is more labor-saving and convenient to operate, meeting the use requirements of the pneumatic ball valve for quick disassembly.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the ball valve easy to install described in the present invention comprises a ball valve and a pneumatic actuator connected above the ball valve; the ball valve is plugged into a transmission hole on the lower surface of the pneumatic actuator through a valve stem; the ball valve is contacted and connected with the lower surface of the pneumatic actuator through a mounting plate; The four corners of the mounting plate are provided with through holes; a plug is movably connected in the through hole; the upper end of the plug extends out of the through hole, and a slot is provided on the outer wall; the bottom of the slot transitions in an arc shape toward the outer wall of the plug; a plug hole corresponding to the through hole is provided on the lower surface of the pneumatic actuator; a groove is provided on the wall of the plug hole; a card block is slidably connected in the groove; the card block is connected to the bottom of the groove by a first spring; the card block can be inserted into the slot under the action of the first spring elastic force; the card block is disengaged from the slot when the plug is rotating.

[0008] Preferably, a rotating groove connected to the middle part of the through hole is provided inside the mounting plate; a gear ring is rotatably connected inside the rotating groove; the gear ring is connected to the outer wall of the plug; tooth grooves are penetrated by the front and rear side walls of the mounting plate; the tooth grooves are simultaneously connected to two rotating grooves; a rack is slidably connected inside the tooth groove; the rack is meshed with two gear rings for transmission at the same time; and the rack can drive the slots on the two plugs to disengage from the corresponding blocks when moving.

[0009] Preferably, the compressed end of the rack is fixedly connected to the pressing block; the pressing block and the mounting plate are connected by a second spring; the second spring is sleeved on the outside of the rack; the end of the rack away from the pressing block is fixedly connected to the limit block; the cross-section of the limit block is larger than the cross-section of the tooth groove; the rack drives the slot on the plug to correspond to the groove position under the action of the elastic force of the second spring; the rack drives the slot on the plug to deviate from the corresponding groove under the action of pressure.

[0010] Preferably, a surface of the plug close to the bottom of the hole is inclined toward the corresponding groove in the initial state of the plug; the block in the hole can be retracted into the corresponding groove under the pressure of the upper end of the plug.

[0011] Preferably, the limit block is in contact with the side wall of the mounting plate under the action of the second spring in the initial state; the two racks are symmetrically arranged about the center position of the mounting plate; the two racks are arranged in opposite directions when sliding in the corresponding tooth grooves to drive the bolt to unlock.

[0012] Preferably, the groove wall of the tooth groove is provided with a lock groove; the lock groove is arranged near the edge of the mounting plate; the lock groove is located between the two corresponding rotation grooves; the lock plate is connected to the lock plate in a sliding seal in the lock groove; the lock plate is fixedly connected to the rack; the rack can drive the lock plate to slide in the lock groove; the end of the rack connected to the pressing block is movably sealed and connected to the tooth groove; the lock plate divides the lock groove into a near spring cavity and a far spring cavity; the near spring cavity is arranged near the second spring; the side wall of the mounting plate is connected to the inside of the near spring cavity through an unlocking hole; the mounting The outer wall of the plate where the unlocking hole is set is adjacent to the outer wall where the tooth groove is set; the side wall of the mounting plate is provided with an L-shaped groove; the L-shaped groove passes through the unlocking hole; the L-shaped block is connected to the L-shaped block by a sliding seal in the L-shaped groove; the L-shaped block and the L-shaped groove wall are connected by a third spring; a connecting hole is penetrated by the L-shaped block; one end of the L-shaped block extends to the outside of the mounting plate; the connecting hole overcomes the third spring and is connected to the unlocking hole when one end of the L-shaped block is toggled; the connecting hole on the L-shaped block is staggered with the unlocking hole under the action of the third spring.

[0013] Preferably, the side wall of the mounting plate is connected to the remote spring cavity via a second air hole; a one-way air inlet valve is provided in the second air hole; the pressurized gas in the remote spring cavity can be discharged along the gap between one end of the rack close to the limit block and the bottom of the tooth groove.

[0014] Preferably, a sliding groove is vertically provided on the outer wall of the plug; a slider is slidably connected in the sliding groove; the upper surface of the slider and the groove wall at the upper end of the sliding groove are connected by a fourth spring; the slider is fixedly connected to the inner wall of the gear ring; the elastic force of the fourth spring is greater than the elastic force of the first spring; the plug slides on the inner side of the gear ring under the top-down push.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention realizes the unlocking and disassembly of the pneumatic actuator and the ball valve by pressing the rack to drive the plug to rotate in the socket, and realizes the locking connection between the pneumatic actuator and the ball valve by directly inserting the plug into the socket. Compared with the bolt connection in the prior art, the installation and disassembly time of the pneumatic actuator and the ball valve is greatly reduced. At the same time, compared with the prior art, the present application is more labor-saving and convenient to operate, meeting the use demand of the pneumatic ball valve for quick disassembly.

[0016] 2. In the present invention, when there are foreign objects around the pneumatic ball valve, the pneumatic ball valve can be disassembled only when the two-way squeezing conditions of the two racks are met. This greatly reduces the probability of the pneumatic ball valve being disassembled due to the foreign objects touching the pressing block and driving the rack to move, thereby providing protection for the stable operation of the pneumatic ball valve in complex environments.

[0017] 3. In the present invention, when the L-shaped block is loosened, the third spring will push the L-shaped block to move and reset in the L-shaped groove, and the connecting hole will be offset from the unlocking hole after the L-shaped block moves, so that the unlocking hole is sealed, and even when the second spring pushes the pressing block, the rack cannot move in the tooth groove, so that the plug is in an unlocked state in the plug hole. In this way, the staff does not need to keep moving the L-shaped block and pressing the pressing block, and can directly control the pneumatic actuator to move away from the mounting plate to unlock the pneumatic ball valve, which greatly facilitates the disassembly of the pneumatic ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0019] Figure 1 is a stereogram of the present invention; Figure 2 is a three-dimensional diagram of a pneumatic actuator in the present invention; Figure 3 yes Figure 2 The enlarged view of point A in the middle; Figure 4 is a three-dimensional diagram of the ball valve of the present invention; Figure 5 is a three-dimensional cross-sectional view of the mounting plate of the present invention; Figure 6 yes Figure 5 The enlarged view of point B in the middle; Figure 7 It is a stereoscopic view of the plug and the gear ring in the present invention.

[0020] In the figure: ball valve 1, valve stem 11, pneumatic actuator 2, transmission hole 21, plug hole 22, groove 23, block 24, first spring 25, mounting plate 3, through hole 31, rotation groove 32, tooth groove 33, lock groove 34, near spring cavity 341, far spring cavity 342, unlocking hole 35, L-shaped groove 36, second air hole 37, locking plate 38, plug 4, card groove 41, slide groove 42, slider 43, fourth spring 44, gear ring 5, rack 6, pressing block 61, second spring 62, limit block 63, L-shaped block 7, third spring 71, connecting hole 72. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 7 As shown, the present invention includes the following embodiments: Embodiment 1: A ball valve that is easy to install, comprising a ball valve 1 and a pneumatic actuator 2 connected to the top of the ball valve 1; the ball valve 1 is plugged into a transmission hole 21 on the lower surface of the pneumatic actuator 2 through a valve stem 11; the ball valve 1 is in contact with the lower surface of the pneumatic actuator 2 through a mounting plate 3; The four corners of the mounting plate 3 are provided with through holes 31; the through holes 31 are movably connected to the plug 4; the upper end of the plug 4 extends out of the through hole 31, and the outer wall is provided with a slot 41; the bottom of the slot 41 transitions in an arc shape toward the outer wall of the plug 4; the lower surface of the pneumatic actuator 2 is provided with a plug hole 22 corresponding to the through hole 31; the hole wall of the plug hole 22 is provided with a groove 23; the groove 23 is slidably connected with a block 24; the block 24 is connected to the bottom of the groove 23 through a first spring 25; the block 24 can be inserted into the slot 41 under the elastic force of the first spring 25; the block 24 is separated from the slot 41 when the plug 4 is rotating.

[0023] In this embodiment, a rotation groove 32 connected to the middle part of the through hole 31 is provided inside the mounting plate 3; the gear ring 5 is rotatably connected inside the rotation groove 32; the gear ring 5 is connected to the outer wall of the plug 4; the front and rear side walls of the mounting plate 3 are penetrated by tooth grooves 33; the tooth groove 33 is simultaneously connected to two rotation grooves 32; the tooth groove 33 is slidably connected to a rack 6; the rack 6 is simultaneously meshed with the two gear rings 5 ​​for transmission; the rack 6 can drive the slots 41 on the two plugs 4 to disengage from the corresponding blocks 24 when moving.

[0024] In this embodiment, the compressed end of the rack 6 is fixedly connected to the pressing block 61; the pressing block 61 is connected to the mounting plate 3 via a second spring 62; the second spring 62 is sleeved on the outside of the rack 6; the end of the rack 6 away from the pressing block 61 is fixedly connected to the limit block 63; the cross-section of the limit block 63 is larger than the cross-section of the tooth groove 33; the rack 6 drives the slot 41 on the plug 4 to correspond to the position of the groove 23 under the elastic force of the second spring 62; the rack 6 drives the slot 41 on the plug 4 to deviate from the corresponding groove 23 under the pressure.

[0025] In this embodiment, the side of the plug 4 close to the bottom of the hole 22 is tilted toward the corresponding groove 23 in the initial state of the plug 4; the block 24 in the hole 22 can be retracted into the corresponding groove 23 under the pressure of the upper end of the plug 4; During operation, for some pneumatic ball valves 1 that are frequently operated for a long time, the pneumatic actuator 2 in the pneumatic ball valve 1 may fail or be damaged. In order not to affect the use of the pneumatic ball valve 1, the pneumatic actuator 2 in the pneumatic ball valve 1 is generally replaced without disassembling the ball valve 1. The ball valve 1 and the pneumatic actuator 2 in the current market are connected by bolts, and the operating space between the ball valve 1 and the pneumatic actuator 2 is limited. Under the existing connection method, the process of removing the pneumatic actuator 2 from the ball valve 1 is time-consuming and laborious, thereby affecting the use of the pneumatic ball valve 1. Therefore, before the pneumatic ball valve 1 is put into use, the staff of the present invention will check that the ball valve 1 and the pneumatic actuator 2 are in good condition, install the ball valve 1 on the pipeline, and connect the pneumatic actuator 2 to the air source. The pneumatic ball valve 1 is controlled and operated by the controller, and the controller controls the pneumatic actuator 2 to drive the ball valve 1 to open and close. After the pneumatic ball valve 1 has been used for a long time, if the pneumatic actuator 2 in the pneumatic ball valve 1 fails, the staff will remove the failed pneumatic actuator 2 from above the ball valve 1, specifically by touching and squeezing the pressing block 61 so that the pressing block 61 The pressure overcomes the second spring 62 and moves close to the mounting plate 3. The pressure on the pressing block 61 drives the rack 6 to move in the tooth groove 33. The limit block 63 moves away from the mounting plate 3 under the movement of the rack 6. The rack 6 drives the meshing gear ring 5 to rotate in the corresponding rotation groove 32 during the movement of the gear ring 5. The corresponding plug 4 is driven to rotate during the rotation of the gear ring 5. The slot 41 on the plug 4 rotates in the corresponding socket 22 as the plug 4 rotates. Since the bottom of the slot 41 and the outer wall of the plug 4 are in an arc-shaped transition, the slot 41 rotates as the plug 4 rotates. The corresponding block 24 will be squeezed until the slot 41 of the plug 4 is away from the groove 23. The block 24 will overcome the first spring 25 and retract into the groove 23 under the pressure of the outer wall of the plug 4, thus realizing the unlocking process of the slot 41 and the block 24. When both racks 6 are pressed and moved, the four plugs 4 are unlocked in their respective sockets 22. Then the staff only needs to move the pneumatic actuator 2 away from the ball valve 1, so that the upper end of the plug 4 is moved out of the socket 22 on the lower surface of the pneumatic actuator 2, and the valve on the ball valve 1 is opened. The upper end of the rod 11 is also moved out of the transmission hole 21 on the lower surface of the pneumatic actuator 2, and the removal process of the pneumatic actuator 2 is completed; then the two pressing blocks 61 are released, and the second spring 62 pushes the pressing block 61 to move away from the mounting plate 3 when the pressing block 61 is released. In the process of the pressing block 61 moving away from the mounting plate 3, the rack 6 is driven to move in the tooth groove 33. In the process of the rack 6 moving in the tooth groove 33, the gear ring 5 is driven to rotate in the corresponding rotation groove 32 in the opposite direction, so that the gear ring 5 drives the corresponding plug 4 to rotate in the opposite direction and reset;After the staff gets the new pneumatic actuator 2, they will align the transmission hole 21 of the pneumatic actuator 2 with the upper end of the valve stem 11, and align the socket 22 with the plug 4, and then control the pneumatic actuator 2 to approach the mounting plate 3 on the ball valve 1. As the upper end of the plug 4 enters the corresponding inner side of the socket 22, since the upper side of the plug 4 is inclined toward the groove 23 in the corresponding socket 22, the block 24 is squeezed and overcomes the first spring 25 to retract into the groove 23 under the inclined guidance of the upper side of the plug 4, until the upper end of the plug 4 continues to approach the bottom of the socket 22 and crosses the groove 23, until the position of the card groove 41 on the plug 4 corresponds to the groove 23, and the card block 24 extends out from the groove 23 under the elastic force of the first spring 25 and enters the card groove 41 on the plug 4, so that the plug 4 is stuck by the card block 24, completing the plug 4 In the process of being locked into the socket 22, when the plug 4 enters the corresponding socket 22, the upper end of the valve stem 11 will enter the transmission hole 21 on the lower surface of the pneumatic actuator 2, completing the connection between the new pneumatic actuator 2 and the original ball valve 1, and then the controller controls the pneumatic ball valve 1 to work, and the pneumatic actuator 2 drives the ball valve 1 to work under the control of the controller; in the working process of the pneumatic ball valve 1, the second spring 62 will always give an elastic force to the pressing block 61, and the limit block 63 will contact the outer wall of the mounting plate 3 under the push of the second spring 62 on the pressing block 61, so that the rack 6 and the tooth groove 33 are kept in a relatively prohibited state under the cooperation of the second spring 62 and the limit block 63, so that the plug 4 will not rotate when the rack 6 is relatively still, ensuring the stability of the plug 4 connected to the socket 22, so that the pneumatic actuator 2 and the ball valve 1 are stably connected; The present invention realizes the unlocking and disassembly of the pneumatic actuator 2 and the ball valve 1 by pressing the rack 6 to drive the plug 4 to rotate in the insertion hole 22, and realizes the locking connection between the pneumatic actuator 2 and the ball valve 1 by directly inserting the plug 4 into the insertion hole 22. Compared with the bolt connection in the prior art, the installation and disassembly time of the pneumatic actuator 2 and the ball valve 1 is greatly reduced. At the same time, compared with the prior art, the present application is more labor-saving and convenient to operate, meeting the use demand of the pneumatic ball valve 1 for quick disassembly; The design of the present invention is not only convenient and quick in replacement, but is also more convenient and quick than traditional bolt connections during production and assembly, thereby improving production efficiency.

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that: The limit block 63 is in contact with the side wall of the mounting plate 3 under the action of the second spring 62 in the initial state; the two racks 6 are arranged symmetrically about the center position of the mounting plate 3; the two racks 6 slide in the corresponding tooth grooves 33 to drive the bolt 4 to unlock in opposite directions; During operation, when it is necessary to unlock and disassemble the pneumatic actuator 2 and the ball valve 1, it is only necessary to press the pressing block 61 to overcome the second spring 62 and move it close to the mounting plate 3, so that the corresponding plug 4 can be unlocked from the insertion hole 22. For some pneumatic ball valves 1 with more complicated installation environments, the unlocking sliding directions of the two racks 6 are set in opposite directions, that is, one of the racks 6 moves from front to back in the corresponding tooth groove 33 under the pressure of the pressing block 61, and the other rack 6 moves from back to front in the corresponding tooth groove 33 under the pressure of the pressing block 61. In this way, The unlocking process of the four plugs 4 in the corresponding sockets 22 can be completed. This means that the pneumatic actuator 2 and the ball valve 1 can only be unlocked when the two racks 6 are squeezed in different directions. Even if there are foreign objects around the pneumatic ball valve 1, the disassembly process of the pneumatic ball valve 1 can only be achieved when the two-way squeezing conditions of the two racks 6 are met. This greatly reduces the probability of the pneumatic ball valve 1 being disassembled due to the foreign objects touching the pressing block 61 and driving the rack 6 to move, thereby providing protection for the stable operation of the pneumatic ball valve 1 in complex environments.

[0027] Embodiment 3, this embodiment is different from embodiment 2 in that: The groove wall of the tooth groove 33 is provided with a locking groove 34; the locking groove 34 is arranged near the edge of the mounting plate 3; the locking groove 34 is located between the corresponding two rotating grooves 32; the locking plate 38 is connected to the locking groove 34 in a sliding seal; the locking plate 38 is fixedly connected to the rack 6; the rack 6 can drive the locking plate 38 to slide in the locking groove 34; the end of the rack 6 connected to the pressing block 61 is movably sealed and connected to the tooth groove 33; the locking plate 38 divides the locking groove 34 into a near spring cavity 341 and a far spring cavity 342; the near spring cavity 341 is arranged near the second spring 62; the side wall of the mounting plate 3 is connected to the inside of the near spring cavity 341 through an unlocking hole 35; The outer wall of the mounting plate 3 where the unlocking hole 35 is provided is adjacent to the outer wall where the tooth groove 33 is provided; the side wall of the mounting plate 3 is provided with an L-shaped groove 36; the L-shaped groove 36 passes through the unlocking hole 35; the L-shaped groove 36 is slidingly and sealably connected to an L-shaped block 7; the L-shaped block 7 and the groove wall of the L-shaped groove 36 are connected by a third spring 71; a connecting hole 72 is penetrated through the L-shaped block 7; one end of the L-shaped block 7 extends to the outside of the mounting plate 3; the connecting hole 72 overcomes the third spring 71 and is connected to the unlocking hole 35 when one end of the L-shaped block 7 is toggled; the connecting hole 72 on the L-shaped block 7 is staggered from the unlocking hole 35 under the action of the third spring 71.

[0028] In this embodiment, the side wall of the mounting plate 3 is connected to the remote spring cavity 342 through the second air hole 37; a one-way air inlet valve is arranged in the second air hole 37; the gas in the remote spring cavity 342 is pressurized and can be discharged along the gap between the end of the rack 6 close to the limit block 63 and the bottom of the tooth groove 33; During operation, when the staff needs to remove the pneumatic actuator 2 from the ball valve 1, the staff will first move the L-shaped block 7 to overcome the third spring 71 to move in the L-shaped groove 36, and the connecting hole 72 is connected with the unlocking hole 35 when the L-shaped block 7 is moved, so that the unlocking hole 35 is opened, so that the near spring cavity 341 is connected with the outside through the connecting hole 72 and the unlocking hole 35, and then press the pressing block 61 to overcome the second spring 62 to drive the rack 6 to move in the tooth groove 33, and the rack 6 will drive the corresponding When the gear ring 5 and the plug 4 rotate, the lock plate 38 will be driven to slide in the lock groove 34. The lock plate 38 is slidably and sealedly connected with the lock groove 34. Therefore, the lock plate 38 will make the space near the spring cavity 341 larger to form a negative pressure during the movement. Under the action of the negative pressure, the external gas will enter the near spring cavity 341 along the unlocking hole 35 and the connecting hole 72 to replenish the gas. The gas in the far spring cavity 342 flows between the end of the rack 6 close to the limit block 63 and the groove wall of the tooth groove 33 under the pressure of the lock plate 38. The thrust force of the teeth on the rack 6 is used to reduce the movement resistance of the rack 6 in the tooth groove 33; when the pressing block 61 is pressed to the limit position, the plug 4 will drive the card slot 41 to disengage from the card block 24, and then the staff will release the L-shaped block 7 and the pressing block 61 in sequence. When the L-shaped block 7 is released, the third spring 71 will push the L-shaped block 7 to move and reset in the L-shaped groove 36, and the connecting hole 72 will be staggered with the unlocking hole 35 after the L-shaped block 7 moves, so that the unlocking hole 35 is sealed. One end of the rack 6 connected to the pressing block 61 is movably sealed and connected to the groove wall of the tooth groove 33, so the near spring chamber 341 is in a sealed state. Even when the second spring 62 pushes the pressing block 61, the rack 6 cannot move in the tooth groove 33, so that the plug 4 is in an unlocked state in the insertion hole 22. In this way, the staff does not need to keep turning the L-shaped block 7 and pressing the pressing block 61, and can directly control the pneumatic actuator 2 to move away from the mounting plate 3 to unlock the pneumatic ball valve 1, which greatly facilitates the disassembly of the pneumatic ball valve 1;After replacing the new pneumatic actuator 2, the L-shaped block 7 will be moved in advance, so that the connecting hole 72 is connected with the unlocking hole 35 again when the L-shaped block 7 is moved, so that the near spring chamber 341 is connected with the outside world through the unlocking hole 35 and the connecting hole 72. In this way, when the second spring 62 pushes the pressing block 61 to drive the rack 6 to move in the tooth groove 33, the rack 6 will drive the locking plate 38 to move in the locking groove 34, so that the gas in the near spring chamber 341 will be squeezed by the locking plate 38 and discharged along the unlocking hole 35, and the external gas will enter the far spring chamber 342 along the second air hole 37 for replenishment. During the movement of the rack 6, the bolt 4 will be driven to rotate and reset, and then the socket 22 on the new pneumatic actuator 2 will be controlled to align with the bolt 4, and the bolt 4 will enter the socket 22, and finally make The block 24 is inserted into the slot 41 on the plug 4 to realize the locking process of the plug 4, that is, to realize the connection process of the pneumatic actuator 2 and the ball valve 1. During the operation of the pneumatic ball valve 1, if the L-shaped block 7 is not moved, the foreign matter around the pneumatic ball valve 1 cannot squeeze the pressing block 61 to realize the unlocking process of the pneumatic actuator 2 and the ball valve 1, so that the pneumatic actuator 2 and the ball valve 1 are locked twice, further improving the operation stability of the pneumatic ball valve 1; the two racks 6 are controlled by the secondary locking of their respective L-shaped blocks 7, and the pneumatic actuator 2 and the ball valve 1 can only be unlocked when the two L-shaped blocks 7 are moved and the two pressing blocks 61 are pressed in opposite directions, so that the pneumatic ball valve 1 can maintain stable connection even in some complex environments. ;

[0029] Embodiment 4, this embodiment is different from embodiment 1 in that: The outer wall of the plug 4 is vertically provided with a slide groove 42; a slider 43 is slidably connected in the slide groove 42; the upper surface of the slider 43 is connected to the groove wall of the upper end of the slide groove 42 through a fourth spring 44; the slider 43 is fixedly connected to the inner wall of the gear ring 5; the elastic force of the fourth spring 44 is greater than the elastic force of the first spring 25; the plug 4 slides inside the gear ring 5 under the push from top to bottom; During operation, when the transmission hole 21 on the lower surface of the pneumatic actuator 2 is aligned with the upper end of the valve stem 11, there is no need to control the alignment of the socket 22 and the plug 4, and the pneumatic actuator 2 is directly controlled to move close to the mounting plate 3. The lower surface of the pneumatic actuator 2 squeezes the plug 4 to move on the inner side of the corresponding gear ring 5, and the slide groove 42 and the slider 43 on the plug 4 move. The fourth spring 44 in the slide groove 42 on the plug 4 will be squeezed, and the plug 4 can be retracted to the through hole 31 under the squeezing of the lower surface of the pneumatic actuator 2, so as to prevent the plug 4 from affecting the alignment of the transmission hole 21 on the lower surface of the pneumatic actuator 2 and the valve stem 11 when it is not aligned with the socket 22. After the valve stem 11 is aligned and inserted into the transmission hole 21, the pneumatic actuator 2 will be rotated to move on the mounting plate 3. The four insertion holes 22 correspond to the plugs 4 one by one, so that the fourth spring 44 will push the plug 4 to move out of the through hole 31 and enter the insertion hole 22. The elastic force of the fourth spring 44 is greater than that of the first spring 25. Therefore, the plug 4 squeezes the block 24 and retracts it into the groove 23 under the action of the fourth spring 44, until the plug 4 passes over the groove 23 and drives the groove 41 on the plug 4 to align with the groove 23. Then, the block 24 is clamped into the groove 41 on the plug 4 under the action of the first spring 25, completing the connection between the pneumatic actuator 2 and the ball valve 1. In this embodiment, the plug 4 avoids the transmission hole 21 on the pneumatic actuator 2 and the valve stem 11 during the installation process, thereby greatly reducing the difficulty of assembling the pneumatic actuator 2 and the ball valve 1, and further improving the assembly efficiency of the pneumatic ball valve 1.

[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ball valve that is easy to install, comprising a ball valve and a pneumatic actuator connected above the ball valve; the ball valve is plugged into a transmission hole on the lower surface of the pneumatic actuator through a valve stem; the ball valve is contacted and connected to the lower surface of the pneumatic actuator through a mounting plate; characterized in that: The four corners of the mounting plate are provided with through holes; a plug is movably connected in the through hole; the upper end of the plug extends out of the through hole, and a slot is provided on the outer wall; the bottom of the slot transitions in an arc shape toward the outer wall of the plug; a plug hole corresponding to the through hole is provided on the lower surface of the pneumatic actuator; a groove is provided on the wall of the plug hole; a card block is slidably connected in the groove; the card block is connected to the bottom of the groove by a first spring; the card block can be inserted into the slot under the action of the first spring elastic force; the card block is disengaged from the slot when the plug is rotating.

2. A ball valve that is easy to install according to claim 1, characterized in that: The interior of the mounting plate is provided with a rotation groove connected with the middle part of the through hole; the rotation groove is rotatably connected with a gear ring; the gear ring is connected to the outer wall of the plug; the front and rear side walls of the mounting plate are penetrated with tooth grooves; the tooth groove is connected with two rotation grooves at the same time; the tooth groove is slidably connected with a rack; the rack is meshed with two gear rings for transmission at the same time; the rack can drive the slots on the two plugs to disengage from the corresponding blocks when moving.

3. A ball valve that is easy to install according to claim 2, characterized in that: The compressed end of the rack is fixedly connected to the pressing block; the pressing block is connected to the mounting plate via a second spring; the second spring is sleeved on the outside of the rack; the end of the rack away from the pressing block is fixedly connected to the limiting block; the cross section of the limiting block is larger than the cross section of the tooth groove; the rack drives the slot on the plug to correspond to the groove position under the elastic force of the second spring; the rack drives the slot on the plug to deviate from the corresponding groove under the pressure.

4. A ball valve that is easy to install according to claim 3, characterized in that: The side of the plug close to the bottom of the plug hole is inclined toward the corresponding groove in the initial state of the plug; the block in the plug hole can be retracted into the corresponding groove under the pressure of the upper end of the plug.

5. A ball valve that is easy to install according to claim 3, characterized in that: In the initial state, the limit block is in contact with the side wall of the mounting plate under the action of the second spring; the two racks are symmetrically arranged about the center position of the mounting plate; the two racks slide in the corresponding tooth grooves to drive the bolt to unlock in opposite directions.

6. A ball valve that is easy to install according to claim 5, characterized in that: The groove wall of the tooth groove is provided with a lock groove; the lock groove is arranged near the edge of the mounting plate; the lock groove is located between the two corresponding rotation grooves; the lock plate is connected to the lock plate in a sliding seal in the lock groove; the lock plate is fixedly connected to the rack; the rack can drive the lock plate to slide in the lock groove; the end of the rack connected to the pressing block is movably sealed and connected to the tooth groove; the lock plate divides the lock groove into a near spring cavity and a far spring cavity; the near spring cavity is arranged near the second spring; the side wall of the mounting plate is connected to the inside of the near spring cavity through an unlocking hole; the mounting plate is provided The outer wall of the unlocking hole is adjacent to the outer wall of the tooth groove; the side wall of the mounting plate is provided with an L-shaped groove; the L-shaped groove passes through the unlocking hole; the L-shaped block is connected to the L-shaped block by a sliding seal; the L-shaped block and the L-shaped groove wall are connected by a third spring; a connecting hole is provided on the L-shaped block; one end of the L-shaped block extends to the outside of the mounting plate; the connecting hole overcomes the third spring and is connected to the unlocking hole when one end of the L-shaped block is toggled; the connecting hole on the L-shaped block is staggered with the unlocking hole under the action of the third spring.

7. A ball valve that is easy to install according to claim 6, characterized in that: The side wall of the mounting plate is connected to the remote spring cavity through a second air hole; a one-way air inlet valve is arranged in the second air hole; the pressurized gas in the remote spring cavity can be discharged along the gap between one end of the rack close to the limit block and the bottom of the tooth groove.

8. The ball valve that is easy to install according to claim 2, characterized in that: A sliding groove is vertically arranged on the outer wall of the plug; a slider is slidably connected in the sliding groove; the upper surface of the slider is connected to the groove wall at the upper end of the sliding groove through a fourth spring; the slider is fixedly connected to the inner wall of the gear ring; the elastic force of the fourth spring is greater than the elastic force of the first spring; the plug slides on the inner side of the gear ring under the top-down push.

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