Ball valve

Abstract

The utility model relates to the technical field of valves, in particular to a ball valve which comprises a valve body, a connecting pipe and a second sealing ring, one end of the valve body is provided with a containing cavity, the other end of the valve body is provided with a first connecting channel, the first connecting channel communicates with the containing cavity, the connecting pipe comprises a threaded section and a mounting section, and one end of the threaded section is coaxially connected to one end of the mounting section; second external threads are arranged on the periphery of the threaded section and are in threaded connection with the cavity wall of the containing cavity, a first mounting groove is formed in the cavity wall of the end, away from the first connecting channel, of the containing cavity, the second sealing ring is embedded in the first mounting groove, and one end of the second sealing ring abuts against the bottom of the first mounting groove. The other end of the second sealing ring abuts against the end, close to the threaded section, of the installation section. The second sealing ring is embedded in the first mounting groove, the mounting section abuts against one end of the second sealing ring, the other end of the second sealing ring abuts against the groove bottom of the first mounting groove, the possibility that liquid in the containing cavity leaks from the connecting position of the connecting pipe and the valve body is reduced, and the sealing performance of the ball valve is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valves, in particular to a ball valve. BACKGROUND

[0002] The ball valve is a commonly used regulating valve in a fluid pipeline transmission system, and is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be tightly closed by only rotating 90 degrees and using a small torque. The ball valve controls its own flow passage through a ball valve opening and closing member, and the ball valve opening and closing member is a spherical body with a cylindrical passage. The valve core is controlled by the valve rod and rotates 0-90 degrees around the valve rod axis. The ball body flow passage rotates with the valve core to achieve the purpose of opening and closing the ball valve.

[0003] As described in Chinese Patent No. 201220584087.8, a ball valve is convenient to assemble, and the specific structure is as follows: a valve body with a valve cavity, a spherical valve core, a valve rod and a handle. One side of the valve body is provided with a connecting pipe communicating with the valve cavity, the other side of the valve body is provided with a valve ring cover threadedly connected with the valve cavity, and the top of the valve body is provided with a shaft hole communicating with the valve cavity. A first sealing ring is embedded on one side of the connecting pipe in the valve cavity, and a second sealing ring is embedded on the valve ring cover in the valve cavity. The first sealing ring, the second sealing ring, the valve core in the valve cavity and the valve cavity are in sealing cooperation. The valve rod is in sealing rotating cooperation with the shaft hole, the bottom end of the valve rod is in clamping cooperation with the valve core, and the top end of the valve rod is in inserting cooperation with the handle.

[0004] The main sealing between the valve body and the valve ring cover is realized through threaded parts. When the valve core is closed, there is a possibility of leakage of the liquid in the valve body from the connection between the valve body and the valve ring cover, which affects the normal use of the ball valve. Content of the utility model

[0005] In order to reduce the possibility of leakage at the connection between the valve body and the valve ring cover and improve the sealing performance of the ball valve, the application provides a ball valve.

[0006] The application provides a ball valve adopting the following technical scheme:

[0007] A ball valve comprises a valve body, a connecting pipe and a second sealing ring. One end of the valve body is provided with a containing cavity, and the other end of the valve body is provided with a first connecting channel. The first connecting channel is in communication with the containing cavity. The connecting pipe comprises a threaded segment and a mounting segment. One end of the threaded segment is coaxially connected to one end of the mounting segment. The outer periphery of the threaded segment is provided with a second external thread. The second external thread is threadedly connected with the cavity wall of the containing cavity. The cavity wall of the containing cavity away from the first connecting channel is provided with a first mounting groove. The second sealing ring is embedded in the first mounting groove. One end of the second sealing ring abuts against the groove bottom of the first mounting groove. The other end of the second sealing ring abuts against one end of the mounting segment close to the threaded segment.

[0008] By adopting the technical scheme, the second sealing ring is embedded in the first mounting groove, one end of the second sealing ring abuts against the first mounting groove, and the other end of the second sealing ring abuts against the bottom of the first mounting groove, thereby reducing the possibility of liquid leakage from the connection between the connecting pipe and the valve body, and improving the sealing performance of the ball valve.

[0009] Preferably, a limiting ring is connected to the wall of the first mounting groove, and a side surface of the limiting ring close to the first connecting channel is used for abutting against the second sealing ring.

[0010] By adopting the technical scheme, the limiting ring is used for abutting against the second sealing ring, thereby reducing the possibility of the second sealing ring being taken out of the first mounting groove when the connecting pipe is taken out, and reducing the possibility of the second sealing ring being lost.

[0011] Preferably, the installation section is provided with a connecting sleeve and a clamping spring, a convex ring is connected to the outer wall of the installation section away from the threaded section, the connecting sleeve is sleeved on the outer periphery of the installation section, a stop ring is connected to the inner wall of the connecting sleeve close to the threaded section, the stop ring is used for abutting against the convex ring, a clamping groove is arranged on the outer periphery of the installation section, the clamping spring is embedded in the clamping groove, the outer wall of the clamping spring protrudes from the clamping groove, one end of the clamping spring close to the threaded section is used for abutting against the side surface of the limiting ring away from the second sealing ring, and the other end of the clamping spring away from the threaded section is used for abutting against the stop ring.

[0012] By adopting the technical scheme, the outer periphery of the installation section is provided with the clamping groove, the clamping spring is embedded in the clamping groove, and the clamping spring abuts against the limiting ring, thereby reducing the possibility of the second sealing ring being damaged due to excessive tightening of the connecting pipe, the connecting sleeve is sleeved on the outer periphery of the installation section, the stop ring abuts against the clamping spring, thereby reducing the possibility of the connecting sleeve being separated from the connecting pipe after the connecting pipe is taken down, and the possibility of the connecting sleeve or the connecting pipe being lost, and improving the service life of the ball valve.

[0013] Preferably, the valve core, the valve rod, the abutting ring and the fixing sleeve are further included, the valve core is rotatably embedded in the accommodating cavity, the rotation axis of the valve core is perpendicular to the axis direction of the first connecting channel, a rotating groove is arranged on the cavity wall of the accommodating cavity, the rotating groove is connected to the outside, the valve rod is rotatably embedded in the rotating groove, a recess is arranged on the outer wall of the valve core, one end of the valve rod is embedded in the recess, the valve rod is fixed in the circumferential direction of the valve core, a third mounting groove is arranged on the groove wall of the rotating groove away from the accommodating cavity, a positioning ring is connected to the outer periphery of the valve rod, the positioning ring is embedded in the third mounting groove, the abutting ring is embedded in the third mounting groove, the abutting ring abuts against the side surface of the positioning ring away from the accommodating cavity, and the fixing sleeve is threadedly connected in the third mounting groove, one end of the fixing sleeve abuts against one end of the abutting ring away from the positioning ring.

[0014] By adopting the technical scheme, the valve core is embedded in the accommodating cavity, one end of the valve rod is embedded in the groove after penetrating through the rotating groove, the fixing sleeve is threadedly connected in the third mounting groove, the fixing sleeve abuts against the abutting ring, the abutting ring abuts against the positioning ring, the relative fixation of the valve rod and the valve body in the axial direction of the valve rod is realized, the possibility of the valve rod being separated from the groove during use is reduced, the reliability of the ball valve is improved, and the valve rod and the valve core are convenient to replace or overhaul.

[0015] Preferably, the first sealing seat, the second sealing seat and the third sealing ring are further included, the first sealing seat and the second sealing seat are embedded in the accommodating cavity, one end of the first sealing seat abuts against the outer wall of the valve core, the other end of the first sealing seat abuts against the cavity wall of the accommodating cavity close to the first connecting channel side, one end of the second sealing seat abuts against the outer wall of the valve core, the other end of the second sealing seat abuts against one end of the threaded segment, the outer periphery of the valve rod is provided with a third sealing groove, and the third sealing ring is embedded in the third sealing groove, and the outer wall of the third sealing ring abuts against the groove wall of the rotating groove.

[0016] By adopting the technical scheme, the first sealing seat and the second sealing seat abut against the outer wall of the valve core, the third sealing ring is located in the third sealing groove and abuts against the groove wall of the rotating groove, the possibility of liquid in the accommodating cavity leaking through the connection between the valve core and the valve body and the connecting pipe and the connection between the valve rod and the valve body is reduced, and the sealing performance of the ball valve is improved.

[0017] Preferably, the handle and the fixing nut are further included, the end of the valve rod away from the valve core is connected with a connecting column, the handle is provided with a transmission hole, the connecting column is embedded in the transmission hole, the outer wall of the connecting column is fitted with the hole wall of the transmission hole, the connecting column and the handle are circumferentially fixed, the handle abuts against the end of the valve rod away from the valve core, the fixing nut is threadedly connected with the outer periphery of the connecting column, and the fixing nut abuts against the side surface of the handle away from the valve core.

[0018] By adopting the technical scheme, the handle is arranged, the operator can hold the end of the handle away from the valve rod, the rotation of the valve rod is realized, and then the opening and closing of the ball valve are realized, the fixing nut is threadedly connected with the connecting column and abuts against the handle, the relative fixation of the handle and the valve rod in the axial direction of the valve rod is realized, the fixing nut can be loosened, the replacement of the handle is realized, and the service life of the ball valve is improved.

[0019] Preferably, the handle side wall is connected with a limiting block, two limiting blocks are arranged, the two limiting blocks are distributed at intervals in the circumferential direction of the handle, the outer wall of the valve body is connected with a first abutting block, the first abutting block is located between the two limiting blocks, the side walls on both sides of the first abutting block are used for abutting against the two limiting blocks, and the included angle between the side walls used for abutting against the first abutting block of the two limiting blocks is a right angle.

[0020] By adopting the technical scheme, the included angle of the two limiting blocks is a right angle, when the two limiting blocks abut against the first abutting block, the maximum flow opening state and the closed state of the ball valve are achieved, the operator can quickly switch between the two states, and the convenience and accuracy of the ball valve operation are improved.

[0021] Preferably, the handle further comprises a fixed segment, a connecting segment and a holding segment, the fixed segment is connected to the connecting column, the length direction of the fixed segment is perpendicular to the rotation axis of the valve rod, one end of the connecting segment close to the fixed segment is connected to one end of the fixed segment, the connecting segment is arranged obliquely, one end of the holding segment is connected to the other end of the connecting segment, the sliding block is slidingly connected to the connecting segment, the sliding direction of the sliding block is parallel to the length direction of the connecting segment, the second abutting block is connected to the outer wall of the valve body, the sliding block is provided with a fixing groove, and the fixing groove is used for embedding the second abutting block.

[0022] By adopting the technical scheme, the sliding block is slidingly connected to the connecting segment, and the fixing groove is used for embedding the second abutting block, so that the handle and the valve body are fixed circumferentially around the valve rod axis, the possibility of accidental rotation of the handle leading to change of the state of the ball valve is reduced, and the reliability of the ball valve is improved.

[0023] Preferably, the handle further comprises an anti-skid sleeve, the anti-skid sleeve is sleeved on the outer periphery of the holding segment, and the outer wall of the anti-skid sleeve is provided with an indication mark.

[0024] By adopting the technical scheme, the anti-skid sleeve is sleeved on the outer periphery of the holding segment, which helps to increase the friction between the palm of the operator and the handle, the outer periphery of the anti-skid sleeve is provided with an indication mark, which facilitates the operator to quickly judge the direction of rotation of the handle, and the stability and convenience of the operation of the ball valve are improved.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. The second sealing ring is embedded in the first installation groove, the installation segment abuts against one end of the second sealing ring, and the other end of the second sealing ring abuts against the bottom of the first installation groove, thereby reducing the possibility of leakage of liquid in the containing cavity from the connection between the connecting pipe and the valve body, and improving the sealing performance of the ball valve.

[0027] 2. The limiting ring is used for abutting against the second sealing ring, thereby reducing the possibility of taking out the connecting pipe while taking out the second sealing ring from the first installation groove, and reducing the possibility of losing the second sealing ring.

[0028] 3. The installation segment is provided with a clamping groove, the clamping spring is embedded in the clamping groove, the clamping spring abuts against the limiting ring, thereby reducing the possibility of damaging the second sealing ring due to excessive tightening of the connecting pipe, the connecting sleeve is sleeved on the outer periphery of the installation segment, and the stop ring abuts against the clamping spring, thereby reducing the possibility of separating the connecting sleeve from the connecting pipe after the connecting pipe is removed, causing the connecting sleeve or the connecting pipe to be lost, and improving the service life of the ball valve. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of a ball valve.

[0030] Figure 2 is a sectional view of a ball valve.

[0031] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0032] Figure 4 is a structural schematic view of a ball valve, mainly showing an open state.

[0033] Figure 5 is a structural schematic view of a ball valve, mainly showing a closed state.

[0034] Figure 6 is Figure 2 is an enlarged view of B in FIG.

[0035] BRIEF DESCRIPTION OF THE DRAWINGS

[0036] 1, valve body; 11, main body; 111, accommodating cavity; 112, first embedding groove; 113, first mounting groove; 114, limiting ring; 12, fixed pipe; 121, first external thread; 122, first sealing groove; 13, first connecting channel; 14, adjusting seat; 141, third mounting groove; 142, second internal thread; 15, rotating groove; 16, first abutting block; 17, second abutting block;

[0037] 2, valve core; 21, water passing hole; 22, groove;

[0038] 3, valve rod; 31, abutting groove; 32, positioning ring; 33, connecting column; 331, fourth external thread; 34, third sealing groove;

[0039] 4, handle; 41, fixed section; 411, transmission hole; 42, connecting section; 421, through hole; 43, gripping section; 44, limiting block;

[0040] 5, fixed sleeve; 51, third external thread; 52, mounting ring;

[0041] 6, sliding block; 61, abutting plate; 62, clamping plate; 621, fixing groove;

[0042] 7, connecting pipe; 71, threaded section; 711, second external thread; 72, mounting section; 721, clamping groove; 73, second connecting channel; 74, second embedding groove; 75, auxiliary groove; 76, protruding ring;

[0043] 8, connecting sleeve; 81, first internal thread; 82, blocking ring;

[0044] 91, first sealing seat; 92, second sealing seat; 93, first sealing ring; 94, second sealing ring; 95, third sealing ring; 96, first gasket; 97, second gasket; 98, abutting ring; 99, fixing nut; 910, anti-skid sleeve; 9101, indication mark; 911, clasp spring. DETAILED DESCRIPTION

[0045] The application will be further described in detail below with reference to the accompanying drawings.

[0046] Reference Figure 1 The ball valve disclosed in the embodiments of the application comprises a valve body 1, which comprises a main body 11. One end of the main body 11 is fixedly connected with a fixed pipe 12. The outer periphery of the end of the fixed pipe 12 away from the main body 11 is provided with a first external thread 121, which is used for threadedly connecting with an external pipeline.

[0047] Reference Figure 1 and Figure 2 The ball valve further comprises a first sealing ring 93. The end of the main body 11 away from the fixed pipe 12 is provided with a receiving cavity 111. The end of the fixed pipe 12 away from the main body 11 is coaxially provided with a first connecting passage 13, which is in communication with the receiving cavity 111. The end of the fixed pipe 12 away from the main body 11 is provided with a first sealing groove 122. The first sealing ring 93 is embedded in the first sealing groove 122. One end of the first sealing ring 93 abuts against the groove bottom of the first sealing groove 122.

[0048] Reference Figure 2 The ball valve further comprises a first sealing seat 91 and a valve core 2. The inner wall of the end of the first connecting passage 13 close to the receiving cavity 111 is coaxially provided with a first embedding groove 112. The first sealing seat 91 is coaxially embedded in the first embedding groove 112. The end of the first sealing seat 91 close to the first sealing groove 122 abuts against the groove bottom of the first embedding groove 112. The outer wall of the first sealing seat 91 is in close contact with the groove wall of the first embedding groove 112. The distance between the inner wall of the first sealing seat 91 and the axis of the first connecting passage 13 is not less than the distance between the inner wall of the first connecting passage 13 and the axis of the first connecting passage 13. The valve core 2 is rotatably embedded in the receiving cavity 111. The rotation axis of the valve core 2 is perpendicular to the axis of the first connecting passage 13. The rotation axis of the valve core 2 is coplanar with the axis of the first connecting passage 13. In this embodiment, the valve core 2 is a spherical body. The valve core 2 is provided with a water passing hole 21, which is used for being in communication with the first connecting passage 13. The axis of the water passing hole 21 is perpendicular to the rotation axis of the valve core 2. The axis of the water passing hole 21 coincides with the spherical center of the valve core 2. The axis of the water passing hole 21 is coplanar with the axis of the first connecting passage 13. The outer wall of the valve core 2 abuts against the end of the first sealing seat 91 away from the groove bottom of the first embedding groove 112.

[0049] Reference Figure 3The ball valve further comprises a valve rod 3 and a third sealing ring 95. An adjusting seat 14 is fixedly connected to the outer wall of the main body 11, and the axis of the adjusting seat 14 coincides with the rotating axis of the valve core 2. A rotating groove 15 is coaxially arranged at the end of the adjusting seat 14 away from the main body 11, and the rotating groove 15 is in communication with the accommodating cavity 111. The valve rod 3 is coaxially and rotatably embedded in the rotating groove 15, one end of the valve rod 3 extends into the accommodating cavity 111, and the other end of the valve rod 3 extends out of the adjusting seat 14. The end of the valve core 2 close to the rotating groove 15 is provided with a groove 22, and the end of the valve rod 3 close to the accommodating cavity 111 is provided with an abutting groove 31. The abutting groove 31 is provided with two, and the two abutting grooves 31 are symmetrically distributed along the direction perpendicular to the axis of the valve rod 3. One end of the valve rod 3 is embedded in the groove 22, and the groove wall of the abutting groove 31 is in close contact with the groove wall of the groove 22. A plurality of third sealing grooves 34 are arranged on the outer periphery of the valve rod 3, and the third sealing grooves 34 are spaced apart along the axis of the valve rod 3. In this embodiment, the third sealing grooves 34 are provided with two. The number of the third sealing rings 95 is the same as the number of the third sealing grooves 34 and corresponds one by one. The third sealing ring 95 is embedded in the third sealing groove 34, the inner wall of the third sealing ring 95 abuts against the groove bottom of the third sealing groove 34, and the outer wall of the third sealing ring 95 abuts against the groove wall of the rotating groove 15.

[0050] With reference to Figure 1 And Figure 3 The ball valve further comprises a second gasket 97, an abutting ring 98 and a fixing sleeve 5. A third installation groove 141 is coaxially arranged on the inner wall of the end of the rotating groove 15 away from the accommodating cavity 111, a positioning ring 32 is fixedly connected to the outer periphery of the valve rod 3, the positioning ring 32 is embedded in the third installation groove 141, the second gasket 97 is sleeved on the outer periphery of the valve rod 3, the second gasket 97 is embedded in the third installation groove 141, the side surface of the second gasket 97 close to the accommodating cavity 111 abuts against the groove bottom of the third installation groove 141, and the side surface of the positioning ring 32 close to the accommodating cavity 111 abuts against the side surface of the second gasket 97 away from the accommodating cavity 111. The abutting ring 98 is sleeved on the outer periphery of the valve rod 3, the abutting ring 98 is embedded in the third installation groove 141, one end of the abutting ring 98 abuts against the side surface of the positioning ring 32 away from the second gasket 97, the fixing sleeve 5 is sleeved on the outer periphery of the valve rod 3, one end of the fixing sleeve 5 is embedded in the third installation groove 141, one end of the fixing sleeve 5 abuts against the end of the abutting ring 98 away from the positioning ring 32, the outer periphery of the end of the fixing sleeve 5 close to the abutting ring 98 is provided with a third external thread 51, the groove wall of the end of the third installation groove 141 away from the accommodating cavity 111 is provided with a second internal thread 142, and the third external thread 51 is in threaded connection with the second internal thread 142. The fixing sleeve 5 is fixedly connected with a mounting ring 52 at the outer periphery of the end of the fixing sleeve 5 away from the abutting ring 98, the cross section of the mounting ring 52 is hexagonal, and the side surface of the mounting ring 52 away from the abutting ring 98 is flush with the end of the fixing sleeve 5 away from the abutting ring 98.

[0051] With reference to Figure 1 And Figure 2The ball valve further comprises a handle 4, a fixing nut 99 and an anti-skid sleeve 910. The end of the valve stem 3 away from the valve core 2 is coaxially and fixedly connected with a connecting column 33. The cross section of the connecting column 33 is a drum-shaped waist. The outer periphery of the end of the connecting column 33 away from the valve stem 3 is provided with a fourth external thread 331. The handle 4 comprises a fixed section 41, a connecting section 42 and a holding section 43. The fixed section 41 is provided with a transmission hole 411. The connecting column 33 is embedded in the transmission hole 411. The hole wall of the transmission hole 411 is in close fit with the outer wall of the connecting column 33. The side surface of the fixed section 41 close to the main body 11 abuts against the end of the valve stem 3 away from the valve core 2. The fixing nut 99 is threadedly connected to the outer periphery of the connecting column 33. The fixing nut 99 abuts against the side surface of the fixed section 41 away from the main body 11. The length direction of the fixed section 41 is perpendicular to the axis direction of the connecting column 33. The end of the connecting section 42 close to the fixed section 41 is fixedly connected to the end of the fixed section 41 along the length direction of the fixed section 41. The connecting section 42 is obliquely arranged. The other end of the holding section 43 is fixedly connected to the other end of the connecting section 42. The length direction of the holding section 43 is parallel to the length direction of the fixed section 41. The anti-skid sleeve 910 is sleeved on the outer periphery of the holding section 43. In the embodiment, the anti-skid sleeve 910 is made of rubber material. The outer wall of the anti-skid sleeve 910 away from the main body 11 is provided with an indication mark 9101.

[0052] With reference to Figure 1 The side wall of the fixed section 41 is fixedly connected with a limiting block 44. The length direction of the limiting block 44 is parallel to the axis of the adjusting seat 14. The end of the limiting block 44 away from the main body 11 is flush with the side surface of the fixed section 41 away from the main body 11. There are two limiting blocks 44. The two limiting blocks 44 are distributed along the circumference of the fixed section 41 at intervals. The side wall of the adjusting seat 14 is fixedly connected with a first abutting block 16. The first abutting block 16 is located on the side of the adjusting seat 14 along the direction perpendicular to the axis of the fixed pipe 12. The first abutting block 16 is located between the two limiting blocks 44. The side walls on both sides of the first abutting block 16 are used for abutting against the two limiting blocks 44. The included angle between the side walls of the two limiting rings 114 used for abutting against the first abutting block 16 is a right angle.

[0053] With reference to Figure 1 and Figure 4 The ball valve further comprises a sliding block 6. The sliding block 6 is slidingly connected to the connecting section 42. The sliding direction of the sliding block 6 is parallel to the length direction of the connecting section 42. The sliding block 6 is annular. The inner wall of the sliding block 6 is in close fit with the outer wall of the connecting section 42. The connecting section 42 is provided with a through hole 421. The through hole 421 penetrates through the connecting section 42 along the sliding direction of the connecting section 42. The through hole 421 is used for embedding a bolt. The outer wall of the adjusting seat 14 is fixedly connected with a second abutting block 17. The second abutting block 17 is symmetrically distributed with the first abutting block 16 along the direction perpendicular to the axis of the fixed pipe 12.

[0054] The sliding block 6 is fixedly connected with an abutting plate 61 at one end close to the fixed section 41. The abutting plate 61 is located at one side of the sliding block 6 along the width direction of the connecting section 42. One end of the abutting plate 61 away from the sliding block 6 is used to abut against the side wall of the second abutting block 17. The sliding block 6 is fixedly connected with a clamping plate 62 at one end close to the fixed section 41. The clamping plate 62 is located at one side of the sliding block 6 close to the main body 11 along the sliding direction of the connecting section 42. One end of the clamping plate 62 away from the sliding block 6 is provided with a fixed groove 621. The fixed groove 621 is used for embedding the second abutting block 17.

[0055] With reference to Figure 4 and Figure 5 In the embodiment, when the water passing hole 21 communicates with the first connecting channel 13, one limiting block 44 abuts against one side surface of the first abutting block 16 away from the fixed pipe 12, and the abutting plate 61 abuts against one side surface of the second abutting block 17 away from the fixed pipe 12. When the water passing hole 21 does not communicate with the first connecting channel 13, another limiting block 44 abuts against one side surface of the first abutting block 16 close to the fixed pipe 12, and the second abutting block 17 is embedded in the fixed groove 621.

[0056] With reference to Figure 2 and Figure 6 The ball valve further includes a connecting pipe 7 and a second sealing seat 92. The connecting pipe 7 includes a threaded section 71 and a mounting section 72. One end of the threaded section 71 is fixedly connected to one end of the mounting section 72 in a coaxial manner. The outer diameter of the threaded section 71 is smaller than the outer diameter of the mounting section 72. One end of the threaded section 71 away from the mounting section 72 is embedded in the accommodating cavity 111. The outer periphery of the threaded section 71 is provided with a second external thread 711. The second external thread 711 is threadedly connected to the cavity wall of the accommodating cavity 111. The cavity wall of the accommodating cavity 111 away from one end of the fixed pipe 12 is provided with a first mounting groove 113. The mounting section 72 is embedded in the first mounting groove 113. The connecting pipe 7 is coaxially provided with a second connecting channel 73. The axis of the second connecting channel 73 coincides with the axis of the first connecting channel 13. The inner wall of one end of the second connecting channel 73 close to the first connecting channel 13 is coaxially provided with a second embedding groove 74. The second sealing seat 92 is embedded in the second embedding groove 74. One end of the second sealing seat 92 away from the first connecting channel 13 abuts against the groove bottom of the second embedding groove 74. The other end of the second sealing seat 92 abuts against the outer wall of the valve core 2. The outer wall of the second sealing seat 92 is in close contact with the groove wall of the second embedding groove 74. The distance between the inner wall of the second sealing seat 92 and the axis of the second connecting channel 73 is not less than the distance between the inner wall of the second connecting channel 73 and the axis of the second connecting channel 73.

[0057] With reference to Figure 4 and Figure 6 The inner wall of one end of the second connecting channel 73 away from the second embedding groove 74 is coaxially provided with an auxiliary groove 75. The cross section of the auxiliary groove 75 is octagonal.

[0058] With reference to Figure 6The ball valve further comprises a second sealing ring 94 and a snap spring 911. The second sealing ring 94 is embedded in the first mounting groove 113 and abuts against the bottom of the first mounting groove 113 at one end of the first connecting channel 13. The other end of the second sealing ring 94 abuts against one end of the mounting section 72 close to the threaded section 71. The groove wall of the first mounting groove 113 is coaxially and fixedly connected with a limiting ring 114. There is a gap between the inner wall of the limiting ring 114 and the outer wall of the mounting section 72. The side surface of the limiting ring 114 close to the bottom of the first mounting groove 113 is used for abutting against the other end of the second sealing ring 94 away from the bottom of the first mounting groove 113. The outer periphery of the mounting section 72 is coaxially provided with a clamping groove 721. The snap spring 911 is embedded in the clamping groove 721. The outer wall of the snap spring 911 protrudes out of the clamping groove 721. One end of the snap spring 911 close to the threaded section 71 abuts against the side surface of the limiting ring 114 away from the bottom of the first mounting groove 113.

[0059] With reference to Figure 4 and Figure 6 The ball valve further comprises a connecting sleeve 8 and a first gasket 96. The outer periphery of one end of the mounting section 72 away from the threaded section 71 is fixedly connected with a protruding ring 76. The side surface of the protruding ring 76 away from the threaded section 71 is flush with one end of the mounting section 72 away from the threaded section 71. The connecting sleeve 8 is coaxially connected to the outer periphery of the mounting section 72. The cross section of the outer wall of the connecting sleeve 8 is hexagonal. The inner wall of the connecting sleeve 8 is in close contact with the outer wall of the protruding ring 76. The inner wall of one end of the connecting sleeve 8 away from the main body 11 is provided with a first internal thread 81 for threadedly connecting with an external pipeline. The inner wall of one end of the connecting sleeve 8 close to the main body 11 is fixedly connected with a blocking ring 82. The side surface of the blocking ring 82 close to the main body 11 is flush with one end of the connecting sleeve 8 close to the main body 11. The side surface of the blocking ring 82 close to the main body 11 is used for abutting against one end of the snap spring 911 away from the threaded section 71. The first gasket 96 is sleeved on the outer periphery of the mounting section 72. One end of the first gasket 96 abuts against the side surface of the protruding ring 76 close to the main body 11. The other end of the first gasket 96 abuts against the side surface of the blocking ring 82 away from the main body 11.

[0060] The implementation principle of the ball valve of the embodiment of the application is as follows: during assembly, the first sealing seat 91 is embedded into the first embedding groove 112, the two third sealing rings 95 are embedded into the two third sealing grooves 34, the second gasket 97 is embedded into the third mounting groove 141, the valve rod 3 is inserted into the accommodating cavity 111 through the rotating groove 15 close to one end of the abutting groove 31, the abutting ring 98 is embedded into the third mounting groove 141, the abutting ring 98 abuts against one side surface of the positioning ring 32 away from the second gasket 97, the fixing sleeve 5 is threadedly connected into the third mounting groove 141, and the fixing sleeve 5 abuts against one end of the abutting ring 98 away from the positioning ring 32. The connecting column 33 is inserted through the transmission hole 411, the fixing nut 99 is threadedly connected to the connecting column 33, and the fixing nut 99 abuts against one side surface of the fixed section 41 away from the main body 11, so as to realize fixed connection of the handle 4 and the valve rod 3. The handle 4 is rotated, the two abutting grooves 31 are symmetrically distributed along the direction perpendicular to the axis of the first connecting channel 13, the valve core 2 is embedded into the accommodating cavity 111, and the valve rod 3 is embedded into the groove 22. The first gasket 96 is sleeved on the outer periphery of the mounting section 72, the connecting sleeve 8 is sleeved on the outer periphery of the mounting section 72, the snap spring 911 is embedded into the clamping groove 721, the second sealing ring 94 is embedded into the first mounting groove 113, the second sealing seat 92 is embedded into the second embedding groove 74, and the threaded section 71 is threadedly connected into the accommodating cavity 111, so that the second sealing seat 92 abuts against the outer wall of the valve core 2, and the snap spring 911 abuts against one side surface of the limiting ring 114 away from the second sealing ring 94.

[0061] During use, when the ball valve needs to be closed or opened, the bolt is taken out of the through hole 421, the sliding block 6 is slid away from the fixed section 41, the handle 4 is rotated, the limiting block 44 abuts against the first abutting block 16, the valve rod 3 is driven to rotate, the valve core 2 is driven to rotate, the water passing hole 21 is communicated with or disconnected from the first connecting channel 13 and the second connecting channel 73, and the sliding block 6 is loosened, the abutting plate 61 abuts against the second abutting block 17 or the second abutting block 17 is embedded into the fixed groove 621.

[0062] The above are preferred embodiments of the application, which do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A ball valve characterized by: The utility model provides a valve body (1), connecting pipe (7) and second sealing ring (94), one end of valve body (1) is equipped with containing cavity (111), the other end of valve body (1) is equipped with first connecting channel (13), first connecting channel (13) communicates with containing cavity (111), connecting pipe (7) includes threaded section (71) and installation section (72), one end of threaded section (71) is coaxially connected in one end of installation section (72), threaded section (71) outer periphery is equipped with second external thread (711), second external thread (711) is connected with containing cavity (111) cavity wall threadedly, the cavity wall of containing cavity (111) away from first connecting channel (13) one end is equipped with first installation groove (113), second sealing ring (94) is embedded in first installation groove (113), one end of second sealing ring (94) is tightly closed first installation groove (113) groove bottom, the other end of second sealing ring (94) is abutted and is installed section (72) one end close threaded section (71).

2. The ball valve of claim 1, wherein: The first installation groove (113) groove wall is connected with the limiting ring (114), and the side surface of the limiting ring (114) close to the first connecting channel (13) is used for abutting the second sealing ring (94).

3. The ball valve of claim 2, wherein: It also includes a connecting sleeve (8) and a snap spring (911), the outer wall of the installation section (72) away from the threaded section (71) is connected with a convex ring (76), the connecting sleeve (8) is sleeved on the outer periphery of the installation section (72), the inner wall of the connecting sleeve (8) close to the threaded section (71) is connected with a stop ring (82), the stop ring (82) is used for abutting the convex ring (76), the outer periphery of the installation section (72) is provided with a clamping groove (721), the snap spring (911) is embedded in the clamping groove (721), the outer wall of the snap spring (911) protrudes from the clamping groove (721), one end of the snap spring (911) close to the threaded section (71) is used for abutting the side surface of the limiting ring (114) away from the second sealing ring (94), one end of the snap spring (911) away from the threaded section (71) is used for abutting the stop ring (82).

4. The ball valve of claim 1, wherein: It also includes the valve core (2), valve stem (3), abutment ring (98) and fixed sleeve (5); the valve core (2) is rotatably embedded in the containing cavity (111); the rotation axis of the valve core (2) is perpendicular to the axis direction of the first connecting channel (13); the containing cavity (111) is provided with a rotating groove (15) at the cavity wall; the rotating groove (15) is connected with the outside; the valve stem (3) is rotatably embedded in the rotating groove (15); the valve core (2) is provided with a groove (22) at the outer wall; one end of the valve stem (3) is embedded in the groove (22); the valve stem (3) and the valve core (2) are circumferentially fixed; the groove wall of the rotating groove (15) away from the containing cavity (111) is provided with a third installation groove (141); the valve stem (3) is connected with a positioning ring (32); the positioning ring (32) is embedded in the third installation groove (141); the abutment ring (98) is embedded in the third installation groove (141); the abutment ring (98) abuts against the side surface of the positioning ring (32) away from the containing cavity (111); the fixed sleeve (5) is threadedly connected in the third installation groove (141); one end of the fixed sleeve (5) abuts against one end of the abutment ring (98) away from the positioning ring (32).

5. The ball valve of claim 4, wherein: It also includes a first sealing seat (91), a second sealing seat (92) and a third sealing ring (95); the first sealing seat (91) and the second sealing seat (92) are embedded in the containing cavity (111); one end of the first sealing seat (91) abuts against the outer wall of the valve core (2); the other end of the first sealing seat (91) abuts against the cavity wall of the containing cavity (111) close to the first connecting channel (13); one end of the second sealing seat (92) abuts against the outer wall of the valve core (2); the other end of the second sealing seat (92) abuts against one end of the threaded segment (71); the outer periphery of the valve stem (3) is provided with a third sealing groove (34); the third sealing ring (95) is embedded in the third sealing groove (34); the outer wall of the third sealing ring (95) abuts against the groove wall of the rotating groove (15).

6. The ball valve of claim 4, wherein: It also includes a handle (4) and a fixed nut (99); one end of the valve stem (3) away from the valve core (2) is connected with a connecting column (33); the handle (4) is provided with a transmission hole (411); the connecting column (33) is embedded in the transmission hole (411); the outer wall of the connecting column (33) is fitted with the hole wall of the transmission hole (411); the connecting column (33) and the handle (4) are circumferentially fixed; the handle (4) abuts against one end of the valve stem (3) away from the valve core (2); the fixed nut (99) is threadedly connected to the outer periphery of the connecting column (33); the fixed nut (99) abuts against the side surface of the handle (4) away from the valve core (2).

7. The ball valve of claim 6, wherein: The handle (4) is connected with a limiting block (44) at the side wall; the limiting block (44) is provided with two; the two limiting blocks (44) are distributed along the circumference of the handle (4); the valve body (1) is connected with a first abutting block (16) at the outer wall; the first abutting block (16) is located between the two limiting blocks (44); the side wall on both sides of the first abutting block (16) is used for abutting with the two limiting blocks (44); the included angle of the side wall used for abutting with the first abutting block (16) of the two limiting blocks (44) is a right angle.

8. The ball valve of claim 7, wherein: Further comprising a sliding block (6); the handle (4) comprises a fixed section (41), a connecting section (42) and a holding section (43); the fixed section (41) is connected with the connecting column (33); the length direction of the fixed section (41) is perpendicular to the rotation axis of the valve rod (3); one end of the connecting section (42) close to the fixed section (41) is connected with one end of the fixed section (41); the connecting section (42) is inclinedly arranged; one end of the holding section (43) is connected with the other end of the connecting section (42); the sliding block (6) is slidingly connected with the connecting section (42); the sliding direction of the sliding block (6) is parallel to the length direction of the connecting section (42); the valve body (1) is connected with a second abutting block (17) at the outer wall; the sliding block (6) is provided with a fixed groove (621); the fixed groove (621) is used for embedding the second abutting block (17).

9. The ball valve of claim 8, wherein: Further comprising an anti-skid sleeve (910); the anti-skid sleeve (910) is sleeved on the outer periphery of the holding section (43); the outer wall of the anti-skid sleeve (910) is provided with an indication mark (9101).

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