Check type ball valve

Abstract

The check type ball valve comprises a valve body assembly, a valve rod body, a valve element and a check assembly, the valve body assembly is provided with a containing cavity, the valve element is rotationally embedded in the containing cavity, the rotating axis of the valve element is vertical, the valve element is provided with a water passing channel, the water passing channel penetrates through the valve element, and the valve body assembly is provided with a liquid inlet channel and a liquid outlet channel. The liquid inlet channel and the liquid outlet channel are communicated with the containing cavity and the outside, the non-return assembly is embedded in the water passing channel and achieves one-way communication of the water passing channel from the liquid inlet channel to the liquid outlet channel, the valve rod body is rotationally connected to the valve body assembly, the rotating axis of the valve rod body is parallel to the rotating axis of the valve element, and the valve rod body is used for driving the valve element to rotate. The non-return assembly is arranged in the water passing channel, one-way connection of the ball valve from the liquid inlet channel to the liquid outlet channel is achieved, the one-way non-return function of the ball valve is achieved, an external non-return valve is not needed in the using process, the circulation pipeline structure is simplified, and the overall production cost of the pipeline is reduced.

Description

TECHNICAL FIELD

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

[0002] Ball valves are commonly used regulating valves in fluid pipeline transmission systems, and are mainly used for cutting off, distributing and changing the flow direction of medium in pipelines. They can be tightly closed by only 90-degree rotation and small torque. The ball valve controls its own flow passage through a ball valve opening and closing element, which is a spherical body with a cylindrical passage. The valve core is controlled by the valve stem and rotates 0-90 degrees around the valve stem axis. The spherical body flow passage rotates with the valve core to achieve the purpose of opening and closing the ball valve.

[0003] Ball valves have a wide range of applications and are often used in complex working environments. Backflow problems often occur in pipelines, and backflow of medium during valve operation not only causes damage to equipment, but also greatly affects users, resulting in reduced work efficiency and increased maintenance costs. However, general ball valves can only control the flow of medium and cannot solve the problem of backflow of medium. In order to solve the problem of backflow, ball valves and check valves are often used in combination to achieve the function of check, which greatly increases the volume and manufacturing cost of the pipeline. CONTENT OF THE INVENTION

[0004] In order to realize the function of one-way check of the ball valve and reduce the production cost, the present application provides a check type ball valve.

[0005] The check type ball valve provided by the present application adopts the following technical scheme:

[0006] A check type ball valve, comprising a valve body assembly, a valve stem body, a valve core and a check assembly, the valve body assembly is provided with a containing cavity, the valve core is rotatably embedded in the containing cavity, the rotation axis of the valve core is vertical, the valve core is provided with a water passage, the water passage penetrates through the valve core, the valve body assembly is provided with an inlet channel and an outlet channel, the inlet channel and the outlet channel are located on both sides of the valve body assembly along the horizontal direction, the inlet channel and the outlet channel communicate with the containing cavity and the outside, the check assembly is embedded in the water passage, the check assembly realizes one-way conduction of the water passage from the inlet channel to the outlet channel, the valve stem body is rotatably connected to the valve body assembly, the rotation axis of the valve stem body is parallel to the rotation axis of the valve core, and the valve stem body is used to drive the valve core to rotate.

[0007] By adopting the above technical scheme, the check assembly is arranged in the water passage to realize one-way conduction of the ball valve from the inlet channel to the outlet channel, realize the function of one-way check of the ball valve, and simplify the structure of the circulating pipeline without the need for an external check valve, thereby reducing the overall production cost of the pipeline.

[0008] Preferably, the check assembly comprises a mounting frame, a reset member and a closure member, the mounting frame is embedded in the water passage, the mounting frame is provided with a water passage hole, the closure member is slidingly connected to the mounting frame, the sliding direction of the closure member is parallel to the axis of the water passage, the reset member is connected between the mounting frame and the closure member, and the reset member enables the closure member to have a tendency to close the water passage hole.

[0009] By adopting the technical scheme, the mounting frame is embedded in the water passage, the connection between the check assembly and the valve core is realized, when the liquid on one side of the liquid inlet channel impacts the closure plate, the closure plate is pushed to slide, the water passage hole is connected, the liquid in the ball valve is connected, when the liquid on one side of the liquid outlet channel impacts the closure plate, the reset member drives the closure plate to cover the water passage hole, the water passage is closed, the function of the ball valve is realized, the components of the check assembly can be replaced as needed, and the production cost is reduced.

[0010] Preferably, the mounting frame comprises an abutting seat, a connecting rod, a sleeve and a connecting block, the water passage inner wall is provided with a limiting ring, one end of the abutting seat abuts against the limiting ring away from the liquid inlet channel, the side of the abutting seat away from the limiting ring is used for abutting against the closure plate, one end of the connecting rod is connected to the abutting seat, the connecting rod is provided with a plurality of connecting rods, the plurality of connecting rods are distributed in a circumferential direction around the abutting seat, the number of the connecting blocks is the same as and corresponds to the number of the connecting rods, one end of the connecting block is connected to the side of the connecting rod away from the water passage inner wall, the other end of the connecting block is connected to the outer wall of the sleeve, the side of the closure plate away from the abutting seat is connected with a guide rod, the guide rod is slidingly embedded in the inner side of the sleeve, the outer wall of the guide rod is fitted with the inner wall of the sleeve, the side of the connecting rod away from the connecting block is connected with a fixing block, the water passage inner wall is provided with a ring groove, the fixing block is embedded in the ring groove, and the surface of the side of the fixing block away from the abutting seat abuts against the groove wall of the ring groove.

[0011] By adopting the technical scheme, the abutting seat abuts against the limiting ring, and the fixing block is embedded in the ring groove, the relative fixation of the mounting frame and the valve core is realized, the possibility of disconnection between the check assembly and the valve core is reduced, the closure plate is connected with the guide rod, the guide rod is slidingly embedded in the inner side of the sleeve, the outer wall of the guide rod is fitted with the inner wall of the sleeve, and the sliding of the closure plate is guided, thereby improving the reliability of the ball valve.

[0012] Preferably, the side of the connecting rod away from the abutting seat is provided with a deformation groove, the inner wall of the side of the water passage away from the liquid inlet channel is provided with a first chamfer, and the first chamfer is used to abut against the fixing block.

[0013] By adopting the technical scheme, the fixing block abuts against the first chamfer, the connecting rod is driven to be relatively deformed relative to the deformation groove, when the fixing block is aligned with the ring groove, the connecting rod returns to the original state, the fixing block is embedded in the ring groove, the mounting frame is convenient to install and disassemble, and the assembly efficiency is improved.

[0014] Preferably, the abutting seat is connected with a convex ring, and an outer wall of the convex ring abuts against an inner wall of the water passing channel.

[0015] By using the above technical scheme, the outer wall of the convex ring abuts against the inner wall of the water passing channel, the sealing effect between the abutting seat and the water passing inner wall is improved, the possibility of liquid leakage from the connection between the mounting frame and the water passing channel is reduced, the possibility of failure of the ball valve check effect is reduced, and the reliability of the ball valve is improved.

[0016] Preferably, the valve body assembly comprises a valve body, a bonnet and a sealing seat, the valve body is provided with a containing cavity, one side cavity wall of the containing cavity is provided with a liquid outlet channel, the other side of the containing cavity is connected with the outside, one end of the bonnet is embedded in the containing cavity, the bonnet is provided with a liquid inlet channel, a first mounting ring is connected at the inner wall of the liquid inlet channel, a second mounting ring is connected at the inner wall of the liquid outlet channel, the sealing seat is provided with two, the two sealing seats are respectively embedded in the liquid outlet channel and the liquid inlet channel, one end of the sealing seat abuts against the outer wall of the valve core, the other end of the sealing seat abuts against the side surface of the first mounting ring and the second mounting ring close to the containing cavity, the outer wall of the valve body is connected with a mounting seat, the end of the mounting seat away from the valve body is provided with a mounting channel, the mounting channel is connected with the containing cavity and the outside, and the valve stem body is rotatably embedded in the mounting channel.

[0017] By using the above technical scheme, the valve body assembly is composed of the valve body and the bonnet, the installation and replacement of the valve core and the valve stem body are facilitated, the service life of the ball valve is improved, the sealing seat abuts against the outer wall of the valve core, the possibility of liquid leakage through the gap between the valve core and the cavity wall of the containing cavity is reduced, and the reliability of the ball valve is improved.

[0018] Preferably, it also comprises a handle, the valve body assembly further comprises a pressing cap, the inner wall of the end of the mounting channel away from the containing cavity is provided with a mounting groove, one end of the pressing cap is threadedly connected in the mounting groove, the pressing cap is provided with a communication hole, the communication hole connects the mounting channel with the outside, one end of the valve stem body extends into the containing cavity after sequentially passing through the communication hole and the mounting channel, the side of the valve stem body close to the containing cavity is connected with an embedding block, the side of the valve core close to the mounting channel is provided with an embedding groove, the embedding groove is used for embedding the embedding block, the side wall of the embedding block abuts against the groove wall of the embedding groove, the inner wall of the end of the mounting channel close to the containing cavity is provided with a positioning groove, the outer wall of the side of the valve stem body close to the embedding block is connected with a positioning ring, the positioning ring is embedded in the positioning groove, the side surface of the positioning ring away from the containing cavity abuts against the groove bottom of the positioning groove, the handle is connected to the end of the valve stem body away from the valve core, the handle is fixed with the valve stem body in the circumferential direction, and the handle abuts against the end of the pressing cap away from the containing cavity.

[0019] By adopting the above technical solution, the positioning ring is embedded in the positioning groove, and the handle abuts against the pressure cap to achieve relative fixation of the valve stem body and the valve body body. The insert is embedded in the groove, and by rotating the handle, the valve stem body is rotated, which in turn drives the valve core to rotate, thereby controlling the opening and closing of the ball valve.

[0020] Preferably, the handle includes a connecting seat and an ear plate. The connecting seat has a groove at one end near the valve body. The end of the pressure cap away from the receiving cavity abuts against the bottom of the groove. The ear plate is connected to the outer wall of the connecting seat. There are two ear plates, which are circumferentially spaced around the axis of the connecting seat. A protrusion is fixedly connected to the outer periphery of the mounting seat. A rotating groove is provided at the groove wall. The protrusion is rotatably embedded in the rotating groove. The groove walls on both sides of the rotating groove are used to abut against the protrusion.

[0021] By adopting the above technical solution, the protrusion is rotatably embedded in the rotating groove, which facilitates the quick adjustment of the on / off state of the ball valve and improves the accuracy of ball valve adjustment.

[0022] Preferably, it also includes a sealing ring, wherein a sealing groove is provided on the outer periphery of the valve stem body, the sealing ring is embedded in the sealing groove, and the outer wall of the sealing ring abuts against the inner wall of the mounting channel.

[0023] By adopting the above technical solution, the sealing ring is embedded in the sealing groove on the outer periphery of the valve stem body, and the outer wall of the sealing ring abuts against the inner wall of the installation channel, reducing the possibility of liquid leakage from the gap between the valve stem body and the valve body, improving the sealing performance of the ball valve, and improving the reliability of the ball valve.

[0024] Preferably, an indicator mark is provided on the outer wall of the valve body.

[0025] By adopting the above technical solution, the indicator mark on the outer wall of the valve body can facilitate operators to identify and judge the connection status of the ball valve, thereby improving the convenience and accuracy of installation.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. A check valve assembly is installed in the water passage to enable unidirectional flow of the ball valve from the inlet channel to the outlet channel, thus achieving the function of one-way check valve. No external check valve is required during use, simplifying the circulation pipeline structure and reducing the overall production cost of the pipeline.

[0028] 2. The abutment seat abuts against the limiting ring, and the fixing block is embedded in the ring groove to achieve relative fixation of the mounting bracket and the valve core, reducing the possibility of the check assembly and the valve core separating. The sealing plate is connected with a guide rod, which slides and is embedded in the inner side of the sleeve. The outer wall of the guide rod is in contact with the inner wall of the sleeve, which guides the sliding of the sealing plate and improves the reliability of the ball valve.

[0029] 3. The valve body assembly is composed of a valve body and a bonnet, facilitating the installation and replacement of the valve core and the valve stem body, improving the service life of the ball valve, the sealing seat abutting against the outer wall of the valve core, reducing the possibility of leakage of liquid through the gap between the valve core and the cavity wall, and improving the reliability of the ball valve. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a sectional view of a check type ball valve.

[0031] Figure 2 is a structural schematic diagram of a check type ball valve.

[0032] Figure 3 is Figure 1 is an enlarged view of A in FIG.

[0033] Figure 4 is an exploded structural schematic diagram of the valve stem assembly and the valve core.

[0034] Figure 5 is a partial sectional view of a check type ball valve.

[0035] Figure 6 is Figure 1 is an enlarged view of B in FIG.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 1. Valve body assembly; 11, valve body; 111, containing cavity; 112, liquid outlet passage; 113, second mounting ring; 114, mounting seat; 1141, mounting groove; 1142, protrusion; 115, mounting passage; 116, positioning groove; 117, indication mark; 12, bonnet; 121, liquid inlet passage; 122, first mounting ring; 123, abutting ring; 13, sealing seat; 14, compression cap; 141, communication hole; 142, connecting ring; 15, filling ring;

[0038] 2. Valve stem assembly; 21, valve stem body; 211, embedded block; 212, positioning ring; 213, sealing groove; 214, abutting groove; 22, handle; 221, connecting seat; 2211, recess; 2212, rotating groove; 2213, limiting groove; 222, ear plate; 23, fixing nut; 24, sealing ring;

[0039] 3. Valve core; 31, water passage; 32, limiting ring; 33, ring groove; 34, first chamfer; 35, embedded groove;

[0040] 4. Check assembly; 41, mounting frame; 411, abutting seat; 4111, water passage hole; 4112, protruding ring; 4113, containing groove; 412, connecting rod; 4121, deformation groove; 413, sleeve; 414, connecting block; 415, fixed block; 416, reinforcing rib; 42, closure plate; 421, guide rod; 43, reset member. Detailed Implementation

[0041] The present application will be further described in detail below with reference to the accompanying drawings.

[0042] Reference Figure 1 This application discloses a check ball valve including a valve body assembly 1, which includes a valve body 11 and a valve cap 12. The valve body 11 has a receiving cavity 111, and a liquid outlet channel 112 is provided on one side wall of the receiving cavity 111 along the horizontal direction, communicating with the outside. The side of the receiving cavity 111 away from the liquid outlet channel 112 is also connected to the outside. One end of the valve cap 12 is coaxially threaded into the receiving cavity 111, and the valve cap 12 is coaxially provided with an inlet channel 121, which connects the receiving cavity 111 and the outside. An abutment ring 123 is coaxially fixedly connected to the outer periphery of the valve cap 12, and the abutment ring 123 abuts against the end of the valve body 11 away from the liquid outlet channel 112.

[0043] Reference Figure 2 In this embodiment, the cross-section of the outer wall of the valve body 11 away from the valve cap 12 is octagonal, and the cross-section of the valve cap 12 is also octagonal. An indicator mark 117 is provided on the outer wall of the valve body 11. The indicator mark 117 is an arrow, and the indicator mark 117 extends from the liquid inlet channel 121 side towards the liquid outlet channel 112 side.

[0044] A check ball valve also includes a valve core 3, which is spherical and rotatably embedded in a receiving cavity 111. The rotation axis of the valve core 3 is vertical and coincides with the center of the ball. The valve core 3 is provided with a water passage 31 that passes through the valve core 3. The axis of the water passage 31 is horizontal and coincides with the center of the ball. The valve body assembly 1 also includes a sealing seat 13. There are two sealing seats 13, which are respectively embedded in the liquid outlet channel 112 and the liquid inlet channel 121. The outer wall of the sealing seat 13 is in contact with the inner wall of the liquid outlet channel 112 and the liquid inlet channel 121. One end of the sealing seat 13 abuts against the outer wall of the valve core 3. A first mounting ring 122 is coaxially fixedly connected to the inner wall of the liquid inlet channel 121, and a second mounting ring 113 is coaxially fixedly connected to the inner wall of the liquid outlet channel 112. The part of the sealing seat 13 away from the valve core 3 abuts against the side surface of the first mounting ring 122 and the second mounting ring 113 near the receiving cavity 111.

[0045] Reference Figure 1 and Figure 3The check type ball valve further comprises a valve rod assembly 2, which comprises a valve rod body 21. The outer wall of the valve body 11 is fixedly connected with a mounting seat 114, the axis of the mounting seat 114 is vertical, and a mounting channel 115 coaxial with the mounting seat 114 is arranged at the end of the mounting seat 114 away from the valve body 11, and the mounting channel 115 is in communication with the containing cavity 111 and the outside. The valve body assembly 1 further comprises a pressing cap 14 and a filling ring 15, and the inner wall of the end of the mounting channel 115 away from the containing cavity 111 is coaxially provided with a mounting groove 1141, the filling ring 15 is embedded in the mounting groove 1141, the end of the filling ring 15 close to the containing cavity 111 abuts against the groove bottom of the mounting groove 1141, and one end of the pressing cap 14 is threadedly connected in the mounting groove 1141, and the end of the pressing cap 14 close to the containing cavity 111 abuts against the end of the filling ring 15 away from the groove bottom of the mounting groove 1141.

[0046] With reference to Figure 3 and Figure 4 The outer periphery of the end of the pressing cap 14 away from the filling ring 15 is fixedly connected with a connecting ring 142, and the cross section of the connecting ring 142 is hexagonal. The pressing cap 14 is coaxially provided with a communication hole 141, and the communication hole 141 is in communication with the mounting channel 115 and the outside. One end of the valve rod body 21 extends into the containing cavity 111 after sequentially penetrating through the communication hole 141 and the mounting channel 115, and the outer wall of the valve rod body 21 is attached to the hole wall of the communication hole 141 and the inner wall of the mounting channel 115. The valve rod body 21 is fixedly connected with an embedding block 211 at the end close to the containing cavity 111, the outer wall of the valve core 3 close to the mounting channel 115 is provided with an embedding groove 35, the embedding groove 35 penetrates through the valve core 3 along the horizontal direction, the embedding groove 35 is used for embedding the embedding block 211, and the side wall of the embedding block 211 abuts against the cavity wall of the embedding groove 35. The outer periphery of the side of the valve rod body 21 close to the containing cavity 111 is coaxially fixedly connected with a positioning ring 212, and the inner wall of the end of the mounting channel 115 close to the containing cavity 111 is provided with a positioning groove 116, the positioning ring 212 is embedded in the positioning groove 116, and the side surface of the positioning ring 212 away from the containing cavity 111 abuts against the groove bottom of the positioning groove 116. The valve rod assembly 2 further comprises a sealing ring 24. The outer wall of the valve rod body 21 is provided with a sealing groove 213, the sealing groove 213 is annular, the sealing ring 24 is embedded in the sealing groove 213, the inner wall of the sealing ring 24 abuts against the groove bottom of the sealing groove 213, and the outer wall of the sealing ring 24 abuts against the inner wall of the mounting channel 115.

[0047] With reference to Figure 4 and Figure 5The valve stem assembly 2 further comprises a handle 22 and a fixing nut 23. The handle 22 comprises a connecting seat 221 and an ear plate 222. The connecting seat 221 is coaxially provided with a recess 2211 at one end close to the valve body 11. The pressing cap 14 abuts the bottom of the recess 2211 at an end away from the accommodating cavity 111. The connecting seat 221 is connected to the valve stem body 21 at an end away from the valve core 3. The connecting seat 221 is fixed in the circumferential direction of the valve stem body 21. The valve stem body 21 is provided with an abutting groove 214 at an outer periphery away from the valve core 3. The abutting groove 214 is provided with two abutting grooves 214 which are symmetrically distributed in the horizontal direction. The bottom of the recess 2211 is provided with a limiting groove 2213 for the valve stem body 21 to pass through an end away from the valve core 3. The groove wall of the limiting groove 2213 is in close contact with the outer wall of the valve stem body 21 and the groove wall of the limiting groove 2213. The recess 2211 is provided with a rotating groove 2212 at the groove wall. The rotating groove 2212 is in communication with the outside. The rotating groove 2212 penetrates the connecting seat 221 at a side close to the valve body 11. The rotating groove 2212 is perpendicular to the groove walls on both sides in the circumferential direction of the rotating groove 2212. The rotating groove 2212 is provided with two rotating grooves 2212 which are circumferentially spaced apart around the axis of the connecting seat 221. The mounting seat 114 is fixedly connected with a protrusion 1142 at an outer periphery. The number of the protrusions 1142 is the same as and corresponds to the number of the rotating grooves 2212. The protrusion 1142 is rotatably embedded in the rotating groove 2212. The protrusion 1142 is used to abut the groove walls on both sides in the circumferential direction of the connecting seat 221. The fixing nut 23 is threadedly connected to the valve stem body 21 at a side away from the valve core 3. The fixing nut 23 abuts the connecting seat 221 at a side away from the valve body 11. The ear plate 222 is fixedly connected to the outer wall of the connecting seat 221. The ear plate 222 is provided with two ear plates 222 which are circumferentially spaced apart around the axis of the connecting seat 221. In this embodiment, the two ear plates 222 are located at both sides of the connecting seat 221 in the horizontal direction.

[0048] Referring to Figure 1 and Figure 6The check type ball valve further comprises a check assembly 4 embedded in the water passing channel 31, which is used to realize one-way conduction of the water passing channel 31 from the liquid inlet channel 121 to the liquid outlet channel 112. The check assembly 4 comprises a mounting frame 41, which comprises an abutting seat 411, a connecting rod 412, a connecting block 414 and a sleeve 413. A limiting ring 32 is coaxially fixedly connected to the inner wall of the water passing channel 31, one end of the abutting seat 411 is connected to the side surface of the limiting ring 32 away from the liquid inlet channel 121, a convex ring 4112 is fixedly connected to the outer periphery of the abutting seat 411, the outer wall of the convex ring 4112 abuts against the inner wall of the water passing channel 31, and the abutting seat 411 is coaxially provided with a water passing hole 4111, the axis of the water passing hole 4111 coincides with the axis of the water passing channel 31. One end of the connecting rod 412 is fixedly connected to the side surface of the abutting seat 411 away from the limiting ring 32, and the connecting rod 412 is provided with a plurality of connecting rods 412, which are distributed in a circumferential interval around the axis of the abutting seat 411. In the embodiment, the connecting rod 412 is provided with four connecting rods 412, which are uniformly distributed around the axis of the abutting seat 411. The end of the connecting rod 412 away from the abutting seat 411 is provided with a deformation groove 4121, and the side of the connecting rod 412 close to the inner wall of the water passing channel 31 is fixedly connected with a fixed block 415. The inner wall of the water passing channel 31 is provided with a ring groove 33 located on the side of the limiting ring 32 away from the liquid inlet channel 121, the fixed block 415 is embedded in the ring groove 33, and the side surface of the fixed block 415 away from the abutting seat 411 abuts against the groove wall of the ring groove 33 away from the limiting ring 32. The inner wall of the water passing channel 31 away from the liquid inlet channel 121 is provided with a first chamfer 34 for abutting against the fixed block 415. The number of the connecting block 414 is the same as and corresponds to the number of the connecting rod 412, one end of the connecting block 414 is fixedly connected to the side of the connecting rod 412 away from the inner wall of the water passing channel 31, the side surface of the connecting block 414 away from the abutting seat 411 is flush with the end of the connecting rod 412 away from the abutting seat 411, and a reinforcing rib 416 is fixedly connected between the connecting block 414 and the connecting rod 412, and extends from the side surface of the connecting rod 412 away from the inner wall of the water passing channel 31 to the side surface of the connecting block 414 close to the abutting seat 411. The other end of the connecting block 414 is fixedly connected to the outer wall of the sleeve 413, and the side surface of the connecting block 414 away from the abutting seat 411 is flush with the side surface of the sleeve 413 away from the abutting seat 411.

[0049] The check assembly 4 further comprises a closing plate 42 and a reset member 43. The closing plate 42 is slidingly connected to the abutting seat 411 away from the limiting ring 32, and the sliding direction of the closing plate 42 is parallel to the axis direction of the water passage 31. The water passage hole 4111 is provided with an accommodating groove 4113 at the hole wall away from the limiting ring 32, and the accommodating groove 4113 is used for embedding the closing plate 42. The end of the closing plate 42 away from the water passage hole 4111 is fixedly connected with a guide rod 421, the guide rod 421 is slidingly embedded in the inner side of the sleeve 413, and the outer wall of the guide rod 421 is in close contact with the inner wall of the sleeve 413. The reset member 43 is connected between the connecting block 414 and the closing plate 42, and the reset member 43 makes the closing plate 42 have the tendency to block the water passage hole 4111. In the embodiment, the reset member 43 is a spring, the reset member 43 is sleeved on the outer periphery of the guide rod 421 and the sleeve 413, one end of the reset member 43 is connected to the side surface of the closing plate 42 away from the water passage hole 4111, and the other end of the reset member 43 is connected to the side surface of the connecting block 414 close to the abutting seat 411.

[0050] The implementation principle of the check type ball valve in the embodiment of the application is as follows: during assembly, the sealing ring 24 is embedded in the sealing groove 213, the end of the valve rod body 21 close to the abutting groove 214 is inserted into the accommodating cavity 111 through the installation passage 115 and extends out of the valve body 11. The filling ring 15 is embedded in the installation groove 1141, and the pressure cap 14 is threadedly connected in the installation groove 1141. The limiting groove 2213 is aligned with the valve rod body 21, the valve rod body 21 passes through the limiting groove 2213, the outer wall of the valve rod body 21 and the groove wall of the abutting groove 214 are in close contact with the groove wall of the limiting groove 2213, the protrusion 1142 is embedded in the rotating groove 2212, the fixed nut 23 is threadedly connected to the valve rod body 21, the fixed nut 23 abuts against the connecting seat 221, the pressure cap 14 abuts against the groove bottom of the recess 2211, and the positioning ring 212 abuts against the groove bottom of the positioning groove 116.

[0051] The check assembly 4 is embedded in the water passage 31, the fixed block 415 abuts against the first chamfer 34, the connecting rod 412 is deformed, when the abutting seat 411 abuts against the limiting ring 32, the fixed block 415 is embedded in the ring groove 33, the assembly of the check assembly 4 and the valve core 3 is realized, one sealing seat 13 is embedded in the liquid outlet passage 112, one end of the sealing seat 13 abuts against the second installation ring 113, the valve core 3 is embedded in the accommodating cavity 111, the embedding block 211 is embedded in the embedding groove 35, the valve core 3 abuts against the sealing seat 13, the other sealing seat 13 is embedded in the liquid inlet passage 121, the sealing seat 13 abuts against the first installation ring 122, and the valve cap 12 is threadedly connected in the accommodating cavity 111, so that the sealing seat 13 abuts against the outer wall of the valve core 3.

[0052] In use, the external pipeline is connected with the liquid inlet channel 121 and the liquid outlet channel 112 respectively, the handle 22 is rotated to drive the valve rod body 21 to rotate, the convex block 1142 abuts against the rotating groove 2212, the liquid in the liquid inlet channel 121 enters the containing cavity 111, the liquid impacts the closing plate 42, the closing plate 42 is pushed to slide away from the water passing hole 4111 against the elastic force of the reset member 43, liquid communication is realized, when the liquid in the liquid outlet channel 112 flows back, the liquid impacts the closing plate 42, the liquid and the reset member 43 make the closing plate 42 abut against the abutting seat 411, the ball valve check valve is realized.

[0053] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A check-type ball valve characterized by: The application relates to a valve body assembly (1), a valve stem body (21), a valve core (3) and a check assembly (4); the valve body assembly (1) is provided with a containing cavity (111); the valve core (3) is rotatably embedded in the containing cavity (111); the rotation axis of the valve core (3) is vertical; the valve core (3) is provided with a water passing channel (31); the water passing channel (31) penetrates through the valve core (3); the valve body assembly (1) is provided with an inlet liquid channel (121) and an outlet liquid channel (112); the inlet liquid channel (121) and the outlet liquid channel (112) are located on the two sides of the valve body assembly (1) along the horizontal direction; the inlet liquid channel (121) and the outlet liquid channel (112) are connected with the containing cavity (111) and the outside; the check assembly (4) is embedded in the water passing channel (31); the check assembly (4) realizes the one-way conduction of the water passing channel (31) from the inlet liquid channel (121) to the outlet liquid channel (112); the valve stem body (21) is rotatably connected with the valve body assembly (1); the rotation axis of the valve stem body (21) is parallel to the rotation axis of the valve core (3); and the valve stem body (21) is used for driving the valve core (3) to rotate.

2. The check-type ball valve according to claim 1, characterized in that: The check assembly (4) comprises a mounting frame (41), a reset member (43) and a closing member; the mounting frame (41) is embedded in the water passing channel (31); the mounting frame (41) is provided with a water passing hole (4111); the closing member is slidably connected with the mounting frame (41); the sliding direction of the closing member is parallel to the axis of the water passing channel (31); the reset member (43) is connected between the mounting frame (41) and the closing member; and the reset member (43) enables the closing member to have the tendency of closing the water passing hole (4111).

3. The check-type ball valve according to claim 2, characterized in that: The mounting frame (41) comprises an abutting seat (411), a connecting rod (412), a sleeve (413) and a connecting block (414); the water passage (31) is provided with a limiting ring (32) on the inner wall; one end of the abutting seat (411) abuts against one side of the limiting ring (32) away from the liquid inlet channel (121); the side of the abutting seat (411) away from the limiting ring (32) is used for abutting against the closing plate (42); one end of the connecting rod (412) is connected to the abutting seat (411); the connecting rod (412) is provided with a plurality of connecting rods (412); the plurality of connecting rods (412) are distributed in a circumferential direction around the axis of the abutting seat (411); the number of the connecting block (414) is the same as that of the connecting rod (412) and one-to-one corresponding; one end of the connecting block (414) is connected to the side of the connecting rod (412) away from the inner wall of the water passage (31); the other end of the connecting block (414) is connected to the outer wall of the sleeve (413); the side of the closing plate (42) away from the abutting seat (411) is connected with a guide rod (421); the guide rod (421) is slidably embedded in the inner side of the sleeve (413); the outer wall of the guide rod (421) is fitted with the inner wall of the sleeve (413); the side of the connecting rod (412) away from the connecting block (414) is connected with a fixing block (415); the water passage (31) is provided with a ring groove (33) on the inner wall; the fixing block (415) is embedded in the ring groove (33); the surface of the side of the fixing block (415) away from the abutting seat (411) abuts against the groove wall of the ring groove (33).

4. The check-type ball valve according to claim 3, characterized in that: The connecting rod (412) away from the abutting seat (411) is provided with a deformation groove (4121); the inner wall of the water passage (31) away from the liquid inlet channel (121) is provided with a first chamfer (34); the first chamfer (34) is used for abutting against the fixing block (415).

5. The check-type ball valve according to claim 3, characterized in that: The abutting seat (411) is connected with a convex ring (4112) on the outer periphery; the outer wall of the convex ring (4112) abuts against the inner wall of the water passage (31).

6. The check-type ball valve according to claim 1, characterized by: The valve body assembly (1) comprises a valve body (11), a valve cap (12) and a sealing seat (13); the valve body (11) is provided with a containing cavity (111); one side cavity wall of the containing cavity (111) is provided with a liquid outlet channel (112); the other side of the containing cavity (111) is connected with the outside; one end of the valve cap (12) is embedded in the containing cavity (111); the valve cap (12) is provided with a liquid inlet channel (121); the inner wall of the liquid inlet channel (121) is connected with a first mounting ring (122); the inner wall of the liquid outlet channel (112) is connected with a second mounting ring (113); the sealing seat (13) is provided with two; the two sealing seats (13) are embedded in the liquid outlet channel (112) and the liquid inlet channel (121) respectively; one end of the sealing seat (13) abuts against the outer wall of the valve core (3); the other end of the sealing seat (13) abuts against the side surface of the first mounting ring (122) and the second mounting ring (113) close to the containing cavity (111); the outer wall of the valve body (11) is connected with a mounting seat (114); one end of the mounting seat (114) away from the valve body (11) is provided with a mounting channel (115); the mounting channel (115) is connected with the containing cavity (111) and the outside; the valve rod body (21) is rotatably embedded in the mounting channel (115).

7. The check-type ball valve according to claim 6, characterized in that: It also comprises a handle (22); the valve body assembly (1) further comprises a pressing cap (14); the inner wall of one end of the mounting channel (115) away from the containing cavity (111) is provided with a mounting groove (1141); one end of the pressing cap (14) is threadedly connected in the mounting groove (1141); the pressing cap (14) is provided with a communication hole (141); the communication hole (141) is connected with the mounting channel (115) and the outside; one end of the valve rod body (21) passes through the communication hole (141) and the mounting channel (115) in sequence and then extends into the containing cavity (111); the side close to the containing cavity (111) of the valve rod body (21) is connected with an embedding block (211); the side close to the mounting channel (115) of the valve core (3) is provided with an embedding groove (35); the embedding groove (35) is used for embedding the embedding block (211); the side wall of the embedding block (211) abuts against the groove wall of the embedding groove (35); the inner wall of one end of the mounting channel (115) close to the containing cavity (111) is provided with a positioning groove (116); the outer wall of the side close to the embedding block (211) of the valve rod body (21) is connected with a positioning ring (212); the positioning ring (212) is embedded in the positioning groove (116); the side surface of the positioning ring (212) away from the containing cavity (111) abuts against the groove bottom of the positioning groove (116); the handle (22) is connected with one end of the valve rod body (21) away from the valve core (3); the handle (22) is fixed with the valve rod body (21) circumferentially; the handle (22) abuts against one end of the pressing cap (14) away from the containing cavity (111).

8. The check-type ball valve according to claim 7, characterized in that: The handle (22) comprises a connecting seat (221) and an ear plate (222); the connecting seat (221) is provided with a recess (2211) near one end of the valve body (11); the pressing cap (14) abuts against the bottom of the recess (2211) at an end away from the accommodating cavity (111); the ear plate (222) is connected to the outer wall of the connecting seat (221); the ear plate (222) is provided with two; the two ear plates (222) are distributed in a circumferential direction around the axis of the connecting seat (221); the mounting seat (114) is fixedly connected with a protrusion (1142) on the outer periphery; the recess (2211) is provided with a rotating groove (2212) at the groove wall; the protrusion (1142) is rotatably embedded in the rotating groove (2212); the groove walls on the circumferential sides of the rotating groove (2212) are used for abutting against the protrusion (1142).

9. The check-type ball valve according to claim 6, characterized in that: Further comprising a sealing ring (24); the valve rod body (21) is provided with a sealing groove (213) on the outer periphery; the sealing ring (24) is embedded in the sealing groove (213); the outer wall of the sealing ring (24) abuts against the inner wall of the mounting channel (115).

10. The check-type ball valve according to claim 6, characterized in that: The valve body (11) is provided with an indication mark (117) at the outer wall.

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