Pigging ball valve

Abstract

The invention relates to the field of pipeline cleaning, in particular to a pipeline cleaning ball valve which comprises a valve body, a valve element, a valve deck, an air bag and a sliding plate, the valve body is provided with a valve cavity, the valve element is rotationally connected to the inner wall of the valve cavity, a taking and placing opening is formed in the upper end of the valve body, the valve element is provided with a mounting opening, and the mounting opening is used for being communicated with the taking and placing opening; the valve cover is detachably connected to the inner wall of the taking and placing opening and used for blocking the taking and placing opening, a warning opening is formed in the upper end of the valve cover, a bag mouth of the air bag is coaxially and fixedly connected to the inner wall of the warning opening, a containing groove is formed in the inner wall of the valve cover, and the containing groove is communicated with the valve cavity and the warning opening. The sliding plate is connected to the groove wall of the containing groove in a sliding mode. When the pressure intensity in the valve cavity is large, the pressure intensity difference of the two sides of the sliding plate enables the sliding plate to slide, the air bag expands to remind an operator that the pressure intensity in the pigging ball valve is too large, pressure needs to be relieved first and then the pigging ball valve is opened, and the personal safety of the operator is protected.

Description

Technical Field

[0001] The present application relates to the field of pipeline cleaning, and in particular to a pipeline cleaning ball valve. Background Art

[0002] The pipe cleaning ball valve is a new type of valve mainly used for cleaning pipes in long-distance pipelines such as water, oil, and natural gas. It is mainly used for launching and receiving pipe cleaning devices and for mechanical cleaning of the inner wall of the pipeline. It has been widely used in oil and gas fields, chemical industries, docks, and offshore platforms.

[0003] When in use, place the pipe cleaner into the inner cavity of the ball of the pipe cleaning valve. When the ball channel and the pipeline channel are on the same axis, the pipe cleaner is launched and received by the pipe cleaning valve under the action of the fluid pressure in the pipeline. When taking or placing the pipe cleaner, it must be done when the pipe cleaning valve is closed. First, open the pressure relief ball valve to release the pressure until the inner cavity pressure is exhausted; check whether there is pressure on the pressure gauge, and the next step can only be performed when the pressure on the pressure gauge is zero; operate the handle on the quick-opening valve cover to rotate the quick-opening valve cover until the boss on the quick-opening valve cover is aligned with the stop of the valve body, and then rotate the rotating shaft to open the quick-opening valve cover; In daily use, the quick-opening valve cover may be opened by mistake due to factors such as worker operating errors. Once the quick-opening valve cover is opened, the medium in the valve body will be sprayed out, which will not only affect the normal use of the ball valve, but also cause safety hazards. Summary of the invention

[0004] In order to protect people's personal safety, the present application provides a pipe cleaning ball valve.

[0005] The present application provides a pipe cleaning ball valve adopting the following technical solution: A pipe cleaning ball valve comprises a valve body, a valve core, a valve cover, an air bag and a sliding plate, wherein the valve body is provided with a valve cavity, the valve core is rotatably connected to the inner wall of the valve cavity, the upper end of the valve body is provided with a take-in and release port, the valve core is provided with an installation port, the installation port is used to communicate with the take-in and release port, the valve cover is detachably connected to the inner wall of the take-in and release port, the valve cover is used to block the take-in and release port, the upper end of the valve cover is provided with a warning port, the bag mouth of the air bag is coaxially fixedly connected to the inner wall of the warning port, the inner wall of the valve cover is provided with a placement groove, the placement groove is connected to the valve cavity and the warning port, and the sliding plate is slidably connected to the groove wall of the placement groove.

[0006] By adopting the above technical solution, when the pressure in the valve cavity is high, the pressure difference on both sides of the sliding plate causes the sliding plate to slide, and the airbag expands to remind the operator that the pressure in the cleaning ball valve is too high and needs to be relieved before opening, thereby protecting the personal safety of the operator.

[0007] Preferably, a liquid inlet is provided at one end of the valve body, and a liquid outlet is provided at the other end of the valve body, the liquid inlet and the liquid outlet are respectively provided on both sides of the valve core, the liquid inlet and the liquid outlet are both connected to the valve cavity, the axes of the liquid inlet and the liquid outlet are both horizontal, the rotation axis of the valve core is horizontal and perpendicular to the axis of the liquid inlet, the axis of the installation port is perpendicular to the rotation axis of the valve core, and the axis of the taking and releasing port is vertical.

[0008] By adopting the above technical solution, liquid enters from the liquid inlet and is discharged from the liquid outlet after passing through the installation port. The valve core rotates to control the connection between the installation port and the liquid inlet and outlet. The access port is convenient for operators to place the cleaning ball into the installation port, which is convenient for users to operate.

[0009] Preferably, the valve cover comprises a connecting sleeve and a cover plate, the outer wall of the connecting sleeve is threadedly connected to the inner wall of the access port, the cover plate is coaxially fixedly connected to the upper end of the connecting sleeve, and the cover plate is used to abut the outer wall of the valve body.

[0010] By adopting the above technical solution, the connecting sleeve is threadedly connected to the inner wall of the access port, the connection is stable and easy to disassemble, which is convenient for operators to operate and improves disassembly efficiency.

[0011] Preferably, a positioning groove is provided on the outer wall of the cover plate.

[0012] By adopting the above technical solution, the positioning groove is convenient for the user to insert the iron rod, and convenient for the user to apply force to rotate the cover plate, thereby improving the disassembly efficiency of the valve cover and facilitating the use of the user.

[0013] Preferably, it also includes a sliding column, a blocking plate and a spring, the cover plate is coaxially provided with a mounting groove at one end facing the connecting sleeve, the placement groove is arranged on the groove wall of the mounting groove, the cover plate is provided with a sliding opening, the two ends of the sliding opening are respectively connected to the placement groove and the positioning groove, the sliding column is slidably connected to the inner wall of the sliding opening, the blocking plate is slidably connected to the groove wall of the positioning groove, the two ends of the sliding column are respectively fixedly connected to the sliding plate and the blocking plate, the spring is sleeved on the outer periphery of the sliding column, one end of the spring abuts against the groove bottom of the placement groove, the other end of the spring abuts against the sliding plate, and the warning opening is arranged between the sliding plate and the groove bottom of the placement groove.

[0014] By adopting the above technical solution, when the air pressure in the valve chamber is too high, the sliding plate overcomes the spring force and slides, the space between the sliding plate and the bottom of the placement groove is reduced, the airbag expands, and the blocking plate is driven to slide through the sliding column, so that the blocking plate is close to the notch of the positioning groove, making it difficult for the iron rod to be inserted into the positioning groove, making it inconvenient for the user to remove the valve cover, and at the same time it is convenient to remind the operator that the air pressure in the valve chamber is too high.

[0015] Preferably, a warning coating is fixedly connected to one end of the blocking plate away from the sliding column.

[0016] By adopting the above technical solution, the warning coating can easily remind operators that the air pressure in the valve cavity is too high, thereby protecting people's personal safety.

[0017] Preferably, it also includes a pressure relief pipe, a pressure relief valve and a handle, the upper end of the valve body is provided with a pressure relief port, the pressure relief port is connected to the valve cavity, the lower end of the pressure relief pipe is coaxially fixedly connected to the inner wall of the pressure relief port, the pressure relief valve is connected to the inner wall of the pressure relief port, the pressure relief valve is used to control the opening and closing of the pressure relief port, the valve stem of the pressure relief valve extends out of the pressure relief pipe, and one end of the handle is fixedly connected to the outer wall of the valve stem of the pressure relief valve.

[0018] By adopting the above technical solution, the operator holds the handle to control the rotation of the pressure relief valve, thereby controlling the opening and closing of the pressure relief port, which is convenient for user operation.

[0019] Preferably, it also includes a screw rod, a limit block, a rotating ring and a pull rope, the lower end of the screw rod is coaxially fixedly connected to the upper end of the cover plate, the outer wall of the screw rod is provided with a control groove, the limit block is slidably connected to the groove wall of the control groove, the rotating ring is coaxially rotatably connected to the outer wall of the screw rod, the inner wall of the rotating ring is provided with a limit groove, the limit groove is used for the limit block to be embedded, one end of the pull rope is fixedly connected to the outer wall of the rotating ring, and the other end of the pull rope is fixedly connected to the handle.

[0020] By adopting the above technical solution, when the limit block is embedded in the limit groove, the valve cover rotates to drive the screw to rotate, so that the rotating ring rotates to reel in the pull rope, the handle rotates to open the pressure relief valve, and the rotation of the valve cover is restricted. When the limit block is set in the control groove, the valve cover rotates normally to open.

[0021] Preferably, it also includes a push plate and a guide column, the cover plate is coaxially provided with a through hole, the lower end of the screw rod is coaxially provided with a connecting hole, the through hole is connected to the valve cavity and the connecting hole, the inner wall of the connecting hole is provided with a connecting groove, the screw rod is provided with a guide hole, the two ends of the guide hole are respectively connected to the bottom of the control groove and the bottom of the connecting groove, the push plate is slidably connected to the groove wall of the connecting groove, and the two ends of the guide column are respectively fixedly connected to the limit block and the push plate.

[0022] By adopting the above technical solution, when the pressure in the valve cavity is relatively high, the push plate moves to push the limit block to embed into the limit groove, so that the rotating ring rotates with the screw, which is convenient for controlling the opening of the pressure relief valve and protecting the operator.

[0023] Preferably, it also includes a support column and a rotating rod, the lower end of the support column is fixedly connected to the upper end of the valve body, the axis of the support column is vertical, one end of the rotating rod is provided with a rotating port, the other end of the rotating rod is provided with a connecting port, the support column is coaxially rotatably connected to the inner wall of the rotating port, and the screw rod is threadedly connected to the inner wall of the connecting port.

[0024] By adopting the above technical solution, the rotating rod guides the valve cover. When the valve cover is separated from the access port, the rotating rod can be rotated to make the valve cover away from the access port, so as to facilitate the removal of the cleaning ball and the use of the operator.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the pressure in the valve cavity is high, the pressure difference on both sides of the sliding plate causes the sliding plate to slide, and the airbag expands to remind the operator that the pressure in the cleaning ball valve is too high and needs to be relieved before opening to protect the personal safety of the operator; 2. When the air pressure in the valve cavity is too high, the sliding plate overcomes the elastic force of the spring and slides, the space between the sliding plate and the bottom of the placement groove is reduced, the air bag expands, and the blocking plate is driven to slide through the sliding column, so that the blocking plate is close to the notch of the positioning groove, making it difficult for the iron rod to be inserted into the positioning groove, making it inconvenient for the user to remove the valve cover, and at the same time, it is convenient to remind the operator that the air pressure in the valve cavity is too high; 3. When the limit block is embedded in the limit groove, the rotation of the valve cover drives the screw to rotate, so that the rotating ring rotates to reel in the pull rope, the handle rotates to open the pressure relief valve, and the rotation of the valve cover is restricted. When the limit block is set in the control groove, the valve cover rotates normally to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of the overall structure of a pigging ball valve.

[0027] Figure 2 It is a cross-sectional view of a pigging ball valve, mainly used to show the main body and operating parts.

[0028] Figure 3 It is a cross-sectional view of a pigging ball valve, mainly used to show the valve body, valve cover, oil outlet parts, warning parts and protective parts.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Description of the accompanying drawings: 1. Valve body; 11. Valve cavity; 12. Operating port; 13. Liquid inlet; 14. Liquid outlet; 15. Access port; 16. Oil outlet; 17. Pressure relief port; 2. Main body; 21. Valve core; 211. Installation port; 22. Valve stem; 23. First valve seat; 231. First valve channel; 24. Second valve seat; 241. Second valve channel; 3. Operating member; 31. Protective shell; 32. Large gear; 33. Small gear; 34. Operating shaft; 35. Operating wheel; 4. Valve cover; 41. Connecting sleeve; 42. Cover plate; 421. Positioning groove; 422. Installation groove; 423. Placement groove; 424. Sliding port; 425. Warning port; 426. Through port; 5. Oil outlet; 51. Oil outlet pipe; 52. Oil outlet valve; 53. Control handle; 6. Pressure relief part; 61. Pressure relief pipe; 62. Pressure relief valve; 63. Handle; 7. Auxiliary part; 71. Support column; 72. Screw; 721. Connecting port; 722. Connecting groove; 723. Control groove; 724. Guide port; 73. Rotating rod; 731. Rotating port; 732. Connecting port; 74. Limit plate; 8. Warning part; 81. Sliding column; 811. First sealing ring; 82. Sliding plate; 821. Second sealing ring; 83. Blocking plate; 831. Warning coating; 84. Spring; 85. Airbag; 9. Protective part; 91. Push plate; 911. Third sealing ring; 92. Guide column; 93. Limit block; 94. Rotating ring; 941. Limit groove; 95. Pull rope; 96. Limit ring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The present application embodiment discloses a pipe cleaning ball valve. Figure 1 and Figure 2 A pipe cleaning ball valve includes a valve body 1, a main body 2, an operating part 3, a valve cover 4, an oil outlet part 5, a pressure relief part 6, an auxiliary part 7, a warning part 8 and a protective part 9. The main body 2 includes a valve core 21, a valve stem 22, a first valve seat 23 and a second valve seat 24.

[0033] Reference Figure 2 The valve body 1 is provided with a valve cavity 11, the valve core 21 is rotatably connected to the inner wall of the valve cavity 11, the outer wall of the valve body 1 is provided with an operating port 12, the operating port 12 is connected to the valve cavity 11, the valve stem 22 is coaxially rotatably connected to the inner wall of the operating port 12, and one end of the valve stem 22 is fixedly connected to the valve core 21. A liquid inlet 13 is provided at one end of the valve body 1, and a liquid outlet 14 is provided at the other end of the valve body 1. The liquid inlet 13 and the liquid outlet 14 are respectively provided on both sides of the valve core 21, and the liquid inlet 13 and the liquid outlet 14 are both connected to the valve cavity 11. The axes of the liquid inlet 13 and the liquid outlet 14 are both horizontal, and the axis of the operating port 12 is horizontal and perpendicular to the axis of the liquid inlet 13.

[0034] Reference Figure 3 The upper end of the valve body 1 is provided with a take-in and take-out port 15, which is connected to the valve cavity 11, and the axis of the take-in and take-out port 15 is vertical. The valve core 21 is provided with a mounting port 211, which penetrates the valve core 21, and is used to communicate with the take-in and take-out port 15, and the axis of the mounting port 211 is perpendicular to the rotation axis of the valve core 21. The first valve seat 23 and the second valve seat 24 are respectively provided on both sides of the valve core 21, and the first valve seat 23 and the second valve seat 24 are both fixedly connected to the inner wall of the valve cavity 11, the first valve seat 23 blocks the liquid inlet 13, and the second valve seat 24 blocks the liquid outlet 14, the first valve seat 23 is provided with a first valve channel 231, and the first valve channel 231 is connected to the liquid inlet 13 and the valve cavity 11, the second valve seat 24 is provided with a second valve channel 241, and the second valve channel 241 is connected to the liquid outlet 14 and the valve cavity 11, and the first valve seat 23 and the second valve seat 24 are both used to abut the valve core 21.

[0035] Reference Figure 2 The operating member 3 includes a protective shell 31, a large gear 32, a small gear 33, an operating shaft 34 and an operating wheel 35. The protective shell 31 is covered on the outer periphery of the valve stem 22, and the protective shell 31 is fixedly connected to the outer wall of the valve body 1. The large gear 32 and the small gear 33 are both arranged in the protective cover. The large gear 32 is coaxially fixedly connected to the outer wall of the valve stem 22. The operating shaft 34 is rotatably connected to the protective shell 31 around its own axis. The rotation axis of the operating shaft 34 is parallel to the axis of the valve stem 22. One end of the operating shaft 34 extends into the protective shell 31, and the small gear 33 is coaxially fixedly connected to the outer wall of the operating shaft 34. The large gear 32 meshes with the small gear 33. The operating wheel 35 is arranged on the side of the protective shell 31 away from the valve body 1, and the operating wheel 35 is coaxially fixedly connected to the outer wall of the operating shaft 34.

[0036] Reference Figure 3 The valve cover 4 is used to block the access port 15. The valve cover 4 includes a connecting sleeve 41 and a cover plate 42. The outer wall of the connecting sleeve 41 is threadedly connected to the inner wall of the access port 15. The cover plate 42 is coaxially fixedly connected to the upper end of the connecting sleeve 41. The cover plate 42 is used to abut the outer wall of the valve body 1. The outer wall of the cover plate 42 is provided with a positioning groove 421. There are multiple positioning grooves 421, and the multiple positioning grooves 421 are evenly spaced around the axis of the cover plate 42.

[0037] The oil outlet component 5 includes an oil outlet pipe 51, an oil outlet valve 52 and a control handle 53. The lower end of the valve body 1 is provided with an oil outlet 16, the oil outlet 16 is connected to the valve cavity 11, the axis of the oil outlet 16 is vertical, the upper end of the oil outlet pipe 51 is coaxially fixedly connected to the inner wall of the oil outlet 16, the oil outlet valve 52 is coaxially rotatably connected to the inner wall of the oil outlet 16, the oil outlet valve 52 is used to control the on and off of the oil outlet 16, the oil outlet valve 52 is configured as a ball valve, the rotation axis of the oil outlet valve 52 is horizontal, the valve stem 22 of the oil outlet valve 52 extends out of the oil outlet pipe 51, and one end of the control handle 53 is fixedly connected to the outer wall of the valve stem 22 of the oil outlet valve 52.

[0038] Reference Figure 1 and Figure 3 The pressure relief member 6 includes a pressure relief pipe 61, a pressure relief valve 62 and a handle 63. A pressure relief port 17 is provided at the upper end of the valve body 1. The pressure relief port 17 is provided at the outer periphery of the access port 15. The pressure relief port 17 is connected to the valve cavity 11. The lower end of the pressure relief pipe 61 is coaxially fixedly connected to the inner wall of the pressure relief port 17. The opening of the pressure relief pipe 61 at one end away from the pressure relief port 17 is away from the valve cover 4. The pressure relief valve 62 is connected to the inner wall of the pressure relief port 17. The pressure relief valve 62 is used to control the on and off of the pressure relief port 17. The pressure relief valve 62 is configured as a ball valve. The rotation axis of the pressure relief valve 62 is horizontal. The valve stem 22 of the pressure relief valve 62 extends out of the pressure relief pipe 61. One end of the handle 63 is fixedly connected to the outer wall of the valve stem 22 of the pressure relief valve 62.

[0039] The auxiliary component 7 includes a support column 71, a screw rod 72, a rotating rod 73 and a limit plate 74. The lower end of the support column 71 is fixedly connected to the upper end of the valve body 1, and the axis of the support column 71 is vertical. The lower end of the screw rod 72 is coaxially fixedly connected to the upper end of the cover plate 42. One end of the rotating rod 73 is provided with a rotating port 731, and the other end of the rotating rod 73 is provided with a connecting port 732. The support column 71 is coaxially rotatably connected to the inner wall of the rotating port 731, and the screw rod 72 is threadedly connected to the inner wall of the connecting port 732. The limit plate 74 is coaxially fixedly connected to the outer wall of the support column 71. There are two limit plates 74, which are respectively arranged on the upper and lower sides of the rotating rod 73. The limit plates 74 abut the rotating rod 73 to limit the rotating rod 73.

[0040] Reference Figure 4The warning member 8 includes a sliding column 81, a sliding plate 82, a blocking plate 83, a spring 84 and an airbag 85. A mounting groove 422 is coaxially provided at one end of the cover plate 42 facing the connecting sleeve 41. The diameter of the mounting groove 422 is smaller than the inner diameter of the connecting sleeve 41. A placement groove 423 is provided on the groove wall of the mounting groove 422. There are multiple placement grooves 423. The placement grooves 423 are arranged in a one-to-one correspondence with the positioning grooves 421. The cover plate 42 is provided with a sliding opening 424. The axis of the sliding opening 424 is along the radial direction of the cover plate 42. The two ends of the sliding opening 424 are respectively connected to the placement groove 423 and the positioning groove 421. The sliding column 81 is slidably connected to the inner wall of the sliding opening 424. The sliding plate 82 is slidably connected to the groove wall of the placement groove 423. The blocking plate 83 is slidably connected to the groove wall of the positioning groove 421. The two ends of the sliding column 81 They are respectively fixedly connected to the sliding plate 82 and the sealing plate 83, the outer wall of the sliding column 81 is fixedly connected with the first sealing ring 811, the outer wall of the sliding plate 82 is fixedly connected with the second sealing ring 821, the spring 84 is sleeved on the outer periphery of the sliding column 81, one end of the spring 84 abuts the bottom of the placement groove 423, and the other end of the spring 84 abuts the sliding plate 82, and the upper end of the cover plate 42 is provided with a warning port 425, the warning port 425 is arranged between the sliding plate 82 and the bottom of the placement groove 423, the warning port 425 is connected to the placement groove 423, the bag mouth of the airbag 85 is coaxially fixedly connected to the inner wall of the warning port 425, and the end of the sealing plate 83 away from the sliding column 81 is fixedly connected with the warning coating 831.

[0041] Reference Figure 1 and Figure 3The protective member 9 includes a push plate 91 , a guide column 92 , a limit block 93 , a rotating ring 94 , a pull rope 95 , a limit ring 96 and a compression spring 97 . A through hole 426 is coaxially provided at the bottom of the mounting groove 422, and a connecting hole 721 is coaxially provided at the lower end of the screw rod 72. The diameter of the through hole 426 is equal to the diameter of the connecting hole 721. The through hole 426 is connected to the valve cavity 11 and the connecting hole 721. The inner wall of the connecting hole 721 is provided with a connecting groove 722. The outer wall of the screw rod 72 is provided with a control groove 723. The screw rod 72 is provided with a guide hole 724. The two ends of the guide hole 724 are respectively connected to the bottom of the control groove 723 and the bottom of the connecting groove 722. The push plate 91 is slidably connected to the groove wall of the connecting groove 722. The outer wall of the push plate 91 is fixedly connected to the third sealing ring 911. The guide column 92 is slidably connected to the inner wall of the guide hole 724. The limit block 93 is slidably connected to the groove wall of the control groove 723. The two ends of the guide column 92 are respectively fixedly connected to the limit block 93 and the push plate 91. The rotating ring 94 is coaxially rotatably connected to the outer wall of the screw rod 72, and the inner wall of the rotating ring 94 is provided with a limit groove 941, and the limit groove 941 is used for the limit block 93 to be embedded. One end of the pull rope 95 is fixedly connected to the outer wall of the rotating ring 94, and the other end of the pull rope 95 is fixedly connected to the end of the handle 63 away from the valve stem 22 of the pressure relief valve 62. The limit ring 96 is arranged between the rotating ring 94 and the pressure relief valve 62, and the limit ring 96 is fixedly connected to the upper end of the valve body 1. The pull rope 95 passes through the limit ring 96, and the compression spring 97 is arranged in the connecting groove 722. The compression spring 97 is sleeved on the outer periphery of the guide column 92, and the two ends of the compression spring 97 respectively abut the bottom of the connecting groove 722 and the push plate 91.

[0042] The implementation principle of a pipe cleaning ball valve in an embodiment of the present application is as follows: when the air pressure in the valve chamber 11 is too high, the sliding plate 82 overcomes the elastic force of the spring 84 and slides, the space between the sliding plate 82 and the bottom of the placement groove 423 is reduced, the air bag 85 expands, and drives the blocking plate 83 to slide through the sliding column 81, so that the blocking plate 83 is close to the notch of the positioning groove 421, so that the iron rod is not easy to insert into the positioning groove 421, and the user is inconvenient to remove the valve cover 4, which is convenient for reminding the operator that the air pressure in the valve chamber 11 is too high. When the user ignores the prompt and continues to operate, the limit block 93 is embedded in the limit groove 941, and the valve cover 4 rotates to drive the screw 72 to rotate, so that the rotating ring 94 rotates to reel in the pull rope 95, and the handle 63 rotates to open the pressure relief valve 62, and the rotation of the valve cover 4 is restricted.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe cleaning ball valve, characterized in that: The invention comprises a valve body (1), a valve core (21), a valve cover (4), an air bag (85) and a sliding plate (82), wherein the valve body (1) is provided with a valve cavity (11), the valve core (21) is rotatably connected to the inner wall of the valve cavity (11), the upper end of the valve body (1) is provided with a take-in and take-out port (15), the valve core (21) is provided with a mounting port (211), the mounting port (211) is used to communicate with the take-in and take-out port (15), and the valve cover (4) is detachably connected to the take-in and take-out port The valve cover (4) is used to block the access opening (15), the upper end of the valve cover (4) is provided with a warning opening (425), the bag mouth of the air bag (85) is coaxially fixedly connected to the inner wall of the warning opening (425), the inner wall of the valve cover (4) is provided with a placement groove (423), the placement groove (423) is connected to the valve cavity (11) and the warning opening (425), and the sliding plate (82) is slidably connected to the groove wall of the placement groove (423).

2. A pipe cleaning ball valve according to claim 1, characterized in that: A liquid inlet (13) is provided at one end of the valve body (1), and a liquid outlet (14) is provided at the other end of the valve body (1). The liquid inlet (13) and the liquid outlet (14) are respectively provided on two sides of the valve core (21). The liquid inlet (13) and the liquid outlet (14) are both connected to the valve cavity (11). The axes of the liquid inlet (13) and the liquid outlet (14) are both horizontal. The rotation axis of the valve core (21) is horizontal and perpendicular to the axis of the liquid inlet (13). The axis of the installation port (211) is perpendicular to the rotation axis of the valve core (21). The axis of the access port (15) is vertical.

3. A pipe cleaning ball valve according to claim 2, characterized in that: The valve cover (4) comprises a connecting sleeve (41) and a cover plate (42); the outer wall of the connecting sleeve (41) is threadedly connected to the inner wall of the access opening (15); the cover plate (42) is coaxially fixedly connected to the upper end of the connecting sleeve (41); and the cover plate (42) is used to abut against the outer wall of the valve body (1).

4. A pipe cleaning ball valve according to claim 3, characterized in that: The outer wall of the cover plate (42) is provided with a positioning groove (421).

5. A pipe cleaning ball valve according to claim 4, characterized in that: The cover plate (42) further comprises a sliding column (81), a blocking plate (83) and a spring (84); a mounting groove (422) is coaxially provided at one end of the cover plate (42) facing the connecting sleeve (41); the placement groove (423) is provided on the groove wall of the mounting groove (422); the cover plate (42) is provided with a sliding opening (424); two ends of the sliding opening (424) are respectively connected to the placement groove (423) and the positioning groove (421); the sliding column (81) is slidably connected to the inner wall of the sliding opening (424). The blocking plate (83) is slidably connected to the groove wall of the positioning groove (421); the two ends of the sliding column (81) are respectively fixedly connected to the sliding plate (82) and the blocking plate (83); the spring (84) is sleeved on the outer periphery of the sliding column (81); one end of the spring (84) abuts against the groove bottom of the placement groove (423); the other end of the spring (84) abuts against the sliding plate (82); and the warning port (425) is provided between the sliding plate (82) and the groove bottom of the placement groove (423).

6. A pigging ball valve according to claim 5, characterized in that: One end of the blocking plate (83) facing away from the sliding column (81) is fixedly connected to a warning coating (831).

7. A pipe cleaning ball valve according to claim 3, characterized in that: The valve body (1) further comprises a pressure relief pipe (61), a pressure relief valve (62) and a handle (63); the upper end of the valve body (1) is provided with a pressure relief port (17); the pressure relief port (17) is connected to the valve cavity (11); the lower end of the pressure relief pipe (61) is coaxially fixedly connected to the inner wall of the pressure relief port (17); the pressure relief valve (62) is connected to the inner wall of the pressure relief port (17); the pressure relief valve (62) is used to control the on / off of the pressure relief port (17); the valve stem (22) of the pressure relief valve (62) extends out of the pressure relief pipe (61); and one end of the handle (63) is fixedly connected to the outer wall of the valve stem (22) of the pressure relief valve (62).

8. A pigging ball valve according to claim 7, characterized in that: The device also comprises a screw rod (72), a limit block (93), a rotating ring (94) and a pull rope (95); the lower end of the screw rod (72) is coaxially fixedly connected to the upper end of the cover plate (42); the outer wall of the screw rod (72) is provided with a control groove (723); the limit block (93) is slidably connected to the groove wall of the control groove (723); the rotating ring (94) is coaxially rotatably connected to the outer wall of the screw rod (72); the inner wall of the rotating ring (94) is provided with a limit groove (941); the limit groove (941) is used for the limit block (93) to be embedded; one end of the pull rope (95) is fixedly connected to the outer wall of the rotating ring (94); and the other end of the pull rope (95) is fixedly connected to the handle (63).

9. A pigging ball valve according to claim 8, characterized in that: It also includes a push plate (91) and a guide column (92), the cover plate (42) is coaxially provided with a through hole (426), the lower end of the screw rod (72) is coaxially provided with a connecting hole (721), the through hole (426) is connected to the valve cavity (11) and the connecting hole (721), the inner wall of the connecting hole (721) is provided with a connecting groove (722), the screw rod (72) is provided with a guide hole (724), the two ends of the guide hole (724) are respectively connected to the bottom of the control groove (723) and the bottom of the connecting groove (722), the push plate (91) is slidably connected to the groove wall of the connecting groove (722), and the two ends of the guide column (92) are respectively fixedly connected to the limit block (93) and the push plate (91).

10. A pigging ball valve according to claim 8, characterized in that: It also comprises a support column (71) and a rotating rod (73), wherein the lower end of the support column (71) is fixedly connected to the upper end of the valve body (1), the axis of the support column (71) is vertical, one end of the rotating rod (73) is provided with a rotating opening (731), and the other end of the rotating rod (73) is provided with a connecting opening (732), the support column (71) is coaxially rotatably connected to the inner wall of the rotating opening (731), and the screw rod (72) is threadedly connected to the inner wall of the connecting opening (732).

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