A high sealing check ball valve

Abstract

The present invention relates to the field of valve technology, and in particular to a high-sealing check ball valve, comprising a ball valve body and a check valve, and a double-ferrule joint connected to an external pipeline, wherein an upper connecting head and a lower connecting head are respectively connected on both sides of the ball valve body by bolts, an outer thread groove is provided on the outer wall of the upper connecting head, a fixing ring and a sliding ring are respectively provided on the outer wall of the lower connecting head, four straight grooves are equidistantly provided on the outer wall of the lower connecting head, a sliding plate is fixedly connected to the inner side of the sliding ring and at positions corresponding to the straight grooves, four arc grooves are equidistantly provided on the inner side of the sliding ring, straight rods are slidably connected to the inner sides of the four arc grooves, and the side walls of the straight rods are fixedly connected to the side walls of the fixing ring. Through the arrangement of the above-mentioned structure, the present invention can not only enable the ball valve body to be connected to the double-ferrule on the external pipeline alone, but also can be used in combination with the check valve, and the ball valve body and the check valve can be fixed by only tightening an internal thread ring, thereby greatly improving the convenience of device installation.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a high-sealing check ball valve. Background Art

[0002] Ball valves and check valves are two commonly used valves in daily life. In daily use, the two valves are often used separately, and there are also valves that combine the two valves into one. This valve not only has the function of a valve, but also effectively prevents the backflow of the medium, the reversal of the pump and the driving machinery, and the water hammer waves generated when the water pump and the driving motor suddenly stop running, thereby reducing the damage to the piping system. Therefore, it has been widely used.

[0003] A check ball valve with a publication number of CN221034130U in the prior art is equipped with a limit block so that the limit block can limit the stroke of the sliding rod. When the check ball valve is only required to flow in one direction, the limit block can be removed from the sliding rod so that the plug can block the valve port. When the check ball valve is required to flow in both directions, the limit block can be installed on the other end of the sliding rod to reduce the sliding distance of the sliding rod, so that the plug cannot block the valve port, thereby realizing the two-way flow function of the check ball valve. Therefore, the present application achieves the technical effect of both enabling the check ball valve to flow in one direction and controlling the two-way flow of the check ball valve.

[0004] Although the check ball valve can be disassembled and assembled for use, there are still some defects in actual use. Since the check ball valve lacks a quick-install structure, when installing the check valve, it is necessary to first use a tool to tighten the check valve body to the ball valve body, and then install the installed check valve and ball valve body on the pipeline. This is not only time-consuming and labor-intensive, but also greatly reduces the installation efficiency of the device.

[0005] Therefore, a high sealing check ball valve is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a high-sealing check ball valve.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is: a high-sealing check ball valve, comprising a ball valve body and a check valve, and a double ferrule joint connected to an external pipeline, wherein the two sides of the ball valve body are respectively connected with an upper connector and a lower connector by bolts, the outer wall of the upper connector is provided with an external thread groove, the outer wall of the lower connector is respectively provided with a fixed ring and a sliding ring, the outer wall of the lower connector is provided with four straight grooves at equal intervals, the inner side of the sliding ring and the positions corresponding to the straight grooves are fixedly connected with sliding plates, the inner side of the sliding ring is provided with a plurality of fixed plates, and the inner side of the sliding ring is provided with a plurality of fixed plates. Four arc grooves are provided, and straight rods are slidably connected to the inner sides of the four arc grooves, and the side walls of the straight rods are fixedly connected to the side walls of the fixing rings, and limiting grooves are provided at both ends of the four straight grooves, and limiting blocks adapted to the limiting grooves are fixedly connected to the bottoms of the straight rods, and sliding grooves are provided on the outer walls of the straight rods and on the side close to the fixing rings, and the outer wall of the fixing ring is provided with an internal threaded ring for threaded connection with the outer wall of the double ferrule joint, and a limiting ring for limiting the position of the internal threaded ring is fixedly connected to the inner side of the internal threaded ring and on the side close to the sliding ring;

[0008] During installation and fixing, place the check valve between the ball valve body and the double ferrule joint, then rotate the straight rod to drive the limit block to rotate out of the limit groove, then push the sliding ring to drive the sliding plate to slide on the inside of the straight groove, slide the limit block to the other side of the straight groove, and then push the straight rod into the limit groove. Finally, connect the internal thread ring with the double ferrule joint, and then use a wrench to rotate the internal thread ring and tighten it on the double ferrule joint, so as to achieve the fixation between the three.

[0009] In the above technical solution, further, a limit spring is fixedly connected between the inner side of the arc groove and the side wall of the straight rod, the outer wall of the internal thread ring is set to a pentagonal shape, and the sliding plate is slidably connected to the inner side of the straight groove.

[0010] In the above technical solution, further, an upper groove is opened on the inner side of the lower connecting head, and inward-recessed lower grooves are opened on both sides of the check valve, wherein a connecting ring for being inserted into the upper groove is opened on the inner side of one of the lower grooves, and a connecting structure for preliminarily fixing the connecting ring is opened on the lower groove, and an insert ring matching the lower groove is fixedly connected to the side wall of the double ferrule joint.

[0011] In the above technical solution, further, four push grooves are equidistantly formed on the outer wall of the connecting ring, and upper sealing rings are fixedly connected to both sides of the connecting ring.

[0012] In the above technical solution, further, the connecting structure includes a round rod, the side walls of the lower slot are evenly spaced with three arc-shaped upper connecting grooves, the inner sides of the three upper connecting grooves are each provided with a lower connecting groove, one side of the upper connecting groove is provided with a circular groove, and there are three round rods, and the round rods are evenly spaced and fixedly connected to the side walls of the connecting ring, and the side walls of the round rods are fixedly connected with round balls.

[0013] In the above technical solution, further, the upper connecting groove and the lower connecting groove are connected to form a T-shaped groove, and the height of the lower connecting groove is greater than that of the upper connecting groove.

[0014] In the above technical solution, further, the diameter of the round rod is matched with the size of the upper connecting groove, and the size of the round ball is matched with the size of the lower connecting groove.

[0015] In the above technical solution, further, an outer wall of the check valve is provided with an indicating arrow for indicating the direction of water flow, and a lower sealing ring is fixedly connected to the side wall of the insert ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention not only enables the ball valve body to be connected to the double ferrule on the external pipeline separately through the arrangement of the sliding ring, the fixing ring and the internal thread ring, but also can be used in combination with the check valve, and the ball valve body and the check valve can be fixed by only tightening an internal thread ring, which greatly improves the convenience of device installation.

[0018] 2. The present invention can adjust the direction of the check valve quick-fitted to the ball valve according to the direction of water flow through the arrangement of the connecting ring and the connecting structure, thereby increasing the application scope of the device and further improving the convenience performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the check ball valve of the present invention;

[0020] Figure 2 It is a schematic diagram of the separation three-dimensional structure of the check ball valve of the present invention;

[0021] Figure 3 It is a schematic diagram of the front full-section three-dimensional structure of the check ball valve of the present invention;

[0022] Figure 4 The appended Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0023] Figure 5 It is a schematic diagram of a three-dimensional structure in which the lower connector and the internal thread ring of the present invention are separated;

[0024] Figure 6 It is a schematic diagram of the overall appearance structure of the fixed ring and the sliding ring of the present invention;

[0025] Figure 7 This is a schematic diagram of the overall appearance structure of the lower connector of the present invention;

[0026] Figure 8It is a schematic diagram of the overall appearance structure of the check valve of the present invention;

[0027] Fig. 9 It is a schematic diagram of the overall appearance structure of the connecting ring of the present invention.

[0028] In the figure: 1. ball valve body; 2. check valve; 3. upper connector; 4. lower connector; 5. external thread groove; 6. upper clamping groove; 7. fixing ring; 8. sliding ring; 9. straight groove; 10. sliding plate; 11. arc groove; 12. straight rod; 13. limit groove; 14. limit block; 15. sliding groove; 16. internal thread ring; 17. limit ring; 18. double ferrule joint; 19. limit spring; 20. lower clamping groove; 21. connecting ring; 22. upper sealing ring; 23. push groove; 24. indicator arrow; 25. plug ring; 26. lower sealing ring; 27. round rod; 28. upper connecting groove; 29. ​​lower connecting groove; 30. round ball; 31. round groove. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figure 1-9 A high sealing check ball valve shown in the figure comprises a ball valve body 1 and a check valve 2, and a double ferrule joint 18 connected to an external pipeline, the double ferrule joint 18 is used to be installed on the external pipeline, the two sides of the ball valve body 1 are respectively connected with an upper connector 3 and a lower connector 4 by bolts, the outer wall of the upper connector 3 is provided with an external thread groove 5, and the setting of the external thread groove 5 facilitates the connection of the ball valve body 1 with the external pipeline, the outer wall of the lower connector 4 is respectively provided with a fixing ring 7 and a sliding ring 8, the outer wall of the lower connector 4 is equidistantly provided with four straight grooves 9, the inner side of the sliding ring 8 and the corresponding position of the straight groove 9 are fixedly connected with a sliding plate 10, and the sliding plate 10 slides Connected to the inner side of the straight groove 9, four arc grooves 11 are equidistantly provided on the inner side of the sliding ring 8, straight rods 12 are slidably connected to the inner sides of the four arc grooves 11, and the side walls of the straight rods 12 are fixedly connected to the side walls of the fixing ring 7, limiting grooves 13 are provided at both ends of the four straight grooves 9, and limiting blocks 14 adapted to the limiting grooves 13 are fixedly connected to the bottom of the straight rods 12, sliding grooves 15 are provided on the outer wall of the straight rods 12 and close to the side of the fixing ring 7, an internal threaded ring 16 for threaded connection with the outer wall of the double ferrule joint 18 is provided on the outer wall of the fixing ring 7, and a limiting ring 17 for limiting the position of the internal threaded ring 16 is fixedly connected to the inner side of the internal threaded ring 16 and close to the side of the sliding ring 8;

[0032] When installing and fixing, place the check valve 2 between the ball valve body 1 and the double ferrule joint 18, then rotate the straight rod 12 to drive the limit block 14 to rotate out of the limit groove 13, then push the sliding ring 8 to drive the sliding plate 10 to slide inside the straight groove 9, slide the limit block 14 to the other side of the straight groove 9, and then push the limit block 14 into the limit groove 13, finally connect the internal thread ring 16 with the double ferrule joint 18, and then use a wrench to rotate the internal thread ring 16 and tighten it on the double ferrule joint 18, so as to achieve the fixation between the three;

[0033] When the ball valve body 1 is installed separately on the double ferrule joint 18 on the external pipe, firstly, the upper connector 3 on the ball valve body 1 is threadedly connected with the joint on the external pipe, and then the plug ring 25 on the side wall of the double ferrule joint 18 is inserted into the upper groove 6, and then the internal thread ring 16 on the lower connector 4 is screwed into the double ferrule joint 18, and then the internal thread ring 16 is tightened with a tool. Since the fixing ring 7 cannot move left and right under the action of the limit block 14, the fixing ring 7 and the lower connector 4 are pushed to be tightly squeezed together with the double ferrule joint 18 under the extrusion of the limit ring 17, and the lower sealing ring 26 on the plug ring 25 is squeezed to achieve a sealed connection between the two.

[0034] If the check valve 2 and the ball valve body 1 need to be installed on the pipeline, first push the straight rod 12 to rotate inside the arc groove 11, and drive the limit block 14 to rotate out of the limit groove 13, and gradually compress the limit spring 19, so as to release the sliding restriction of the straight rod 12, and then pull the straight rod 12 to drive the sliding ring 8 and the sliding plate 10 to slide inside the straight groove 9, and drive the fixing ring 7 and the internal thread ring 16 to move, so as to connect the lower connector 4 with the double card The check valve 2 is installed in the gap between the sleeve joint 18, and then when the limit block 14 moves to the other side of the straight groove 9, the straight rod 12 can be loosened, and then the straight rod 12 and the limit block 14 are pushed to rotate under the elastic force of the limit spring 19, so that the limit block 14 is pushed into the limit groove 13, thereby limiting the sliding position of the straight rod 12, and then the connecting ring 21 can be inserted into the lower card groove 20 through the connecting structure, and then the other end of the connecting ring 21 is inserted into the upper card groove 6, and the double The insert ring 25 on the side wall of the ferrule joint 18 is inserted into the lower groove 20 on the other side, and then the internal thread ring 16 can be screwed into the double ferrule joint 18, and then the internal thread ring 16 is tightened using a tool. Therefore, under the extrusion of the limit ring 17, the fixing ring 7, the lower connector 4, the connecting ring 21 and the check valve 2 are pushed and tightly squeezed together with the double ferrule joint 18, and the upper sealing ring 22 and the lower sealing ring 26 on the insert ring 25 and the connecting ring 21 are squeezed, so as to achieve a sealed connection between the three, and then the check ball valve integrates two functions: cut-off and check functions. The dual functions in one make the check ball valve more compact, save installation time, close quickly, and seal tightly. Even a slight reverse pressure can make it completely tight, effectively preventing the backflow of the medium, the reversal of the pump and the driving machinery, and the water shock wave generated when the water pump and the driving motor suddenly stop running, reducing the damage to the piping system, and finally repeating the above operation in reverse when disassembling.

[0035] In order to improve the convenience of the device during installation, a limit spring 19 is fixedly connected between the inner side of the arc groove 11 and the side wall of the straight rod 12. Through the setting of the limit spring 19, after loosening the straight rod 12, the limit block 14 is pushed into the corresponding limit groove 13 under the elastic force of the limit spring 19, so as to quickly limit the position of the fixing ring 7. The outer wall of the internal threaded ring 16 is set to a pentagonal shape. The outer wall of the internal threaded ring 16 is set to a pentagonal shape, which is convenient for using a workpiece to tighten the internal threaded ring 16 on the double ferrule joint 18, thereby improving the convenience of the device during installation.

[0036] In order to be able to adjust the direction of the check valve 2 quickly installed on the ball valve body 1 according to the direction of water flow, an upper groove 6 is opened on the inner side of the lower connector 4, and sunken lower grooves 20 are opened on both sides of the check valve 2, and a connecting ring 21 for inserting into the upper groove 6 is provided on the inner side of one of the lower grooves 20, and a connecting structure for preliminarily fixing the connecting ring 21 is provided on the lower grooves 20, and an insert ring 25 adapted to the lower groove 20 is fixedly connected to the side wall of the double ferrule joint 18;

[0037] The connecting structure includes a round rod 27, and three arc-shaped upper connecting grooves 28 are evenly spaced on the side wall of the lower clamping groove 20, and lower connecting grooves 29 are formed inside the three upper connecting grooves 28, and a circular groove 31 is formed on one side of the upper connecting groove 28. The circular groove 31 is provided to facilitate the insertion of the ball 30 on the round rod 27 into the lower connecting groove 29, and three round rods 27 are provided, and the round rods 27 are evenly spaced and fixedly connected to the side wall of the connecting ring 21, and the side wall of the round rod 27 is fixedly connected with the ball 30;

[0038] Before the check valve 2 needs to be installed on the ball valve body 1, first insert the ball 30 on the round rod 27 on the side wall of the connecting ring 21 into the lower connecting groove 29 from the round groove 31, then rotate the connecting ring 21 to drive the round rod 27 and the ball 30 to rotate, so as to rotate the ball 30 to the end away from the round groove 31, and then insert the round rod 27 and the ball 30 into the upper connecting groove 28 and the lower connecting groove 29, so as to preliminarily fix the position of the connecting ring 21 on the check valve 2, and will not restrict the left and right sliding of the connecting ring 21, thereby affecting the subsequent squeezing of the upper sealing ring 22 on the connecting ring 21, and further affecting the sealing connection between the connecting ring 21 and the check valve 2 and the lower connector 4;

[0039] When the installation direction of the check valve 2 needs to be adjusted according to the direction of water flow in the pipeline, the connecting ring 21 can be installed in the lower groove 20 on the other side during the rotation of the check valve 2, and the above operation can be repeated to preliminarily fix the connecting ring 21 on the check valve 2, thereby changing the flow stopping direction of the check valve 2 (it should be noted here that most check ball valve connectors are female and male joints. If the check ball valve is turned over to change the flow stopping direction, the position of the female and male joints needs to be replaced, which is more complicated for the installed pipeline. Therefore, the present structure is more convenient to change the flow stopping direction). It can be flexibly adjusted according to actual usage, greatly improving the convenience of the device.

[0040] In order to improve the sealing performance of the check ball valve during installation, upper sealing rings 22 are fixedly connected on both sides of the connecting ring 21. The setting of the upper sealing ring 22 can effectively improve the sealing performance of the connecting ring 21 when docking with the check valve 2 and the lower connecting head 4, thereby increasing the sealing effect of the check ball valve after installation. The side wall of the plug ring 25 is fixedly connected with a lower sealing ring 26. The setting of the lower sealing ring 26 can improve the sealing performance of the plug ring 25 when docking with the check valve 2.

[0041] In order to limit the position of the initially fixed connecting ring 21, the upper connecting groove 28 and the lower connecting groove 29 are connected to form a T-shaped groove, and the height of the lower connecting groove 29 is greater than the upper connecting groove 28, the diameter of the round rod 27 is adapted to the size of the upper connecting groove 28, and the size of the ball 30 is adapted to the size of the lower connecting groove 29. By connecting the upper connecting groove 28 and the lower connecting groove 29 to form a T-shaped groove, the position of the round rod 27 and the ball 30 after insertion can be limited, so that the round rod 27 can only slide left and right in the upper connecting groove 28 and cannot be pulled out of the upper connecting groove 28, thereby facilitating the subsequent quick docking of the check valve 2 and the ball valve body 1, thereby improving the convenience of device installation.

[0042] In order to further improve the convenience of the device, an indicator arrow 24 for indicating the direction of water flow is provided on the outer wall of the check valve 2. The setting of the indicator arrow 24 facilitates the installer to quickly know the flow direction of the check valve 2, thereby facilitating the rapid installation of the position of the check valve 2 according to the direction of water flow, thereby improving the convenience of the device. Four push grooves 23 are equidistantly provided on the outer wall of the connecting ring 21. The setting of the push grooves 23 facilitates the installer to rotate the connecting ring 21 to completely screw the round rod 27 into the upper connecting groove 28, thereby greatly improving the convenience of the device during installation.

[0043] The basic principles, main features and advantages of the present invention are shown and described above.

[0044] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A high-sealing check ball valve, comprising a ball valve body (1) and a check valve (2), and a double-ferrule joint (18) connected to an external pipeline, characterized in that: The two sides of the ball valve body (1) are connected to an upper connecting head (3) and a lower connecting head (4) by bolts, respectively; the outer wall of the upper connecting head (3) is provided with an external thread groove (5); the outer wall of the lower connecting head (4) is provided with a fixing ring (7) and a sliding ring (8); the outer wall of the lower connecting head (4) is provided with four straight grooves (9) at equal intervals; the inner side of the sliding ring (8) and the corresponding positions of the straight grooves (9) are fixedly connected with sliding plates (10); the inner side of the sliding ring (8) is provided with four arc grooves (11) at equal intervals; the inner sides of the four arc grooves (11) are slidably connected with straight rods (12); and the straight rods (12) are provided with a plurality of straight grooves (11) and a plurality of straight groove ... The side wall of the straight rod (12) is fixedly connected to the side wall of the fixing ring (7), both ends of the four straight grooves (9) are provided with limit grooves (13), the bottom of the straight rod (12) is fixedly connected with a limit block (14) adapted to the limit groove (13), the outer wall of the straight rod (12) and the side close to the fixing ring (7) are provided with a sliding groove (15), the outer wall of the fixing ring (7) is provided with an internal thread ring (16) for threaded connection with the outer wall of the double ferrule joint (18), and the inner side of the internal thread ring (16) and the side close to the sliding ring (8) is fixedly connected with a limit ring (17) for limiting the position of the internal thread ring (16); During installation and fixing, the check valve (2) is placed between the ball valve body (1) and the double ferrule joint (18), and then the straight rod (12) is rotated to drive the limit block (14) to rotate out of the limit groove (13), and then the sliding ring (8) is pushed to drive the sliding plate (10) to slide inside the straight groove (9), and the limit block (14) is slid to the other side of the straight groove (9), and then the straight rod (12) can be pushed into the limit groove (13), and finally the internal thread ring (16) is connected to the double ferrule joint (18), and then the internal thread ring (16) is rotated with a wrench to be tightened on the double ferrule joint (18), so as to achieve the fixation between the three; An upper groove (6) is formed on the inner side of the lower connector (4), and inwardly recessed lower grooves (20) are formed on both sides of the check valve (2), wherein a connecting ring (21) for inserting into the upper groove (6) is formed on the inner side of one of the lower grooves (20), and a connecting structure for preliminarily fixing the connecting ring (21) is formed on each of the lower grooves (20), and an insert ring (25) adapted to the lower groove (20) is fixedly connected to the side wall of the double ferrule joint (18); The connection structure comprises a round rod (27), the side wall of the lower clamping groove (20) is provided with three arc-shaped upper connection grooves (28) at equal distances, the inner sides of the three upper connection grooves (28) are provided with lower connection grooves (29), one side of the upper connection groove (28) is provided with a circular groove (31), and three round rods (27) are provided, and the round rods (27) are fixedly connected to the side wall of the connection ring (21) at equal distances, and the side wall of the round rod (27) is fixedly connected with a round ball (30).

2. A high sealing check ball valve according to claim 1, characterized in that: A limit spring (19) is fixedly connected between the inner side of the arc-shaped groove (11) and the side wall of the straight rod (12), the outer wall of the internal thread ring (16) is configured to be a pentagonal shape, and the sliding plate (10) is slidably connected to the inner side of the straight groove (9).

3. A high sealing check ball valve according to claim 1, characterized in that: Four push grooves (23) are equidistantly formed on the outer wall of the connecting ring (21), and upper sealing rings (22) are fixedly connected to both sides of the connecting ring (21).

4. A high sealing check ball valve according to claim 1, characterized in that: Furthermore, the upper connecting groove (28) and the lower connecting groove (29) are connected to form a T-shaped groove, and the height of the lower connecting groove (29) is greater than that of the upper connecting groove (28).

5. A high sealing check ball valve according to claim 1, characterized in that: The diameter of the round rod (27) matches the size of the upper connecting groove (28), and the size of the round ball (30) matches the size of the lower connecting groove (29).

6. A high sealing check ball valve according to claim 1, characterized in that: An indicating arrow (24) for indicating the direction of water flow is provided on the outer wall of the check valve (2), and a lower sealing ring (26) is fixedly connected to the side wall of the insert ring (25).

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