Ball valve ball body with non-return function

Abstract

The utility model relates to a ball body of a ball valve with a non-return function, which comprises a valve body shell, a valve body ball core arranged in the valve body shell, a water through hole arranged in the valve body ball core, a spherical cavity arranged on the inner wall of the water through hole, a valve body shaft arranged at the top end of the valve body ball core and penetrating through the valve body shell and a non-return ball core. The non-return ball core is arranged in the ball body cavity, a through hole is formed in the non-return ball core, a non-return assembly is arranged in the through hole, and a non-return shaft is arranged at the top end of the non-return ball core and penetrates through the valve body shaft. The utility model relates to the technical field of ball check valves. According to the ball body of the ball valve with the non-return function, the non-return ball core can be driven to rotate in the valve body ball core by rotating the non-return shaft, so that the orientation of the non-return assembly arranged in the non-return ball core is changed, the purpose of adjusting the non-return direction is achieved, and the practicability of the ball valve can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of check ball valves, and in particular to a ball valve ball with a check function. Background Technology

[0002] A ball valve is a valve whose opening and closing element is a ball, which is driven by the valve stem to rotate and open and close. A check valve is a valve that automatically opens and closes its valve disc based on the flow of the medium itself, and is used to prevent the medium from flowing back. It belongs to automatic valves. In the pipelines of water supply and drainage equipment, ball valves and check valves are two common types of valves that are often used together. Usually, in this case, it is necessary to install a ball valve and a check valve on the pipeline at the same time.

[0003] In the prior art, most ball valves with check function have a fixed check direction. When changing the check direction, the ball valve needs to be removed and reinstalled, so the existing check ball valves are inconvenient to use. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a ball valve ball with a check valve function, so as to solve the technical problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A ball valve body with a check valve function includes:

[0007] The valve body housing has a valve body ball core inside, and a water passage hole is opened inside the valve body ball core. The inner wall of the water passage hole is provided with a spherical cavity. A valve body shaft is provided at the top of the valve body ball core, and the valve body shaft passes through the valve body housing.

[0008] The check ball core is located inside the ball cavity. The check ball core has a through hole inside, and a check component is located inside the through hole. A check shaft is located at the top of the check ball core, and the check shaft passes through the valve body shaft.

[0009] Furthermore, the check valve assembly includes:

[0010] The fixing plate has several through slots inside and a sliding hole at the center of the fixing plate. The outer peripheral wall of the fixing plate is fixed inside the through hole.

[0011] The sliding shaft is slidably disposed inside the sliding hole. One end of the sliding shaft is provided with a limit ring, and a tension spring is connected to the limit ring and the fixed plate.

[0012] A baffle assembly is disposed inside the through hole and is fixedly connected to the end of the sliding shaft away from the limiting ring, for sealing the through hole.

[0013] Furthermore, the baffle assembly includes:

[0014] The first tapered portion is fixedly connected to the end of the sliding shaft away from the limiting ring, and the diameter of the flat end of the first tapered portion is smaller than the diameter of the through hole;

[0015] The second tapered part has its flat end fixedly connected to the flat end of the first tapered part, and the diameter of the second tapered part is larger than the diameter of the through hole.

[0016] Furthermore, a rotating wrench is provided at the top end of the valve body shaft, a valve body limiting component is provided at the bottom end of the rotating wrench, and a check valve limiting component is provided at the top end of the rotating wrench.

[0017] Furthermore, the valve body limiting assembly includes:

[0018] An annular platform is fitted onto the outer circumferential wall of the valve body shaft and is fixedly connected to the valve body shell. A sliding groove is provided at the top of the annular platform, and a limit block is slidably arranged inside the sliding groove. The limit block is fixedly connected to the valve body shaft.

[0019] Furthermore, the backflow prevention and limiting component includes:

[0020] The fixed ring has a rotating groove inside. The fixed tube is fixedly connected to the top of the inside of the rotating wrench and is coaxial with the check shaft. The rotating groove has a positioning block inside, which is fixedly connected to the check shaft.

[0021] In summary, this utility model has at least one of the following beneficial technical effects:

[0022] 1. The ball valve ball with check function can rotate the check shaft to drive the check ball core to rotate inside the valve body ball core, thereby changing the orientation of the check component set inside the check ball core, so as to achieve the purpose of adjusting the check direction and effectively improving the practicality of the ball valve.

[0023] 2. In this ball valve with check function, when no medium passes through the valve body, the tension spring is in a relaxed state. At this time, the limit ring moves away from the fixed plate under the influence of the tension spring, and under the push of the tension spring, the baffle assembly and the stepped transition of the through hole come into contact with each other, so as to achieve the purpose of blocking the through hole and thus preventing backflow. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a ball valve body with a check valve function according to this utility model.

[0026] Figure 2 This is a schematic diagram of the valve body shell of a ball valve with a check valve function according to the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of the ball core of a ball valve with a check valve function according to this utility model.

[0028] Figure 4 This is a cross-sectional view of the ball of a ball valve with a check valve function according to this utility model.

[0029] Figure 5 This is a schematic diagram of the structure of a check valve ball assembly with a check valve function according to the present invention.

[0030] Figure 6 This utility model relates to a ball valve with a check valve function. Figure 4 Enlarged view of the structure at point A.

[0031] In the diagram, 1. Valve body shell; 2. Valve body ball core; 3. Water passage hole; 4. Spherical cavity; 5. Valve body shaft; 6. Check ball core; 7. Through hole; 8. Check assembly; 81. Fixing plate; 82. Through groove; 83. Sliding hole; 84. Sliding shaft; 85. Limiting ring; 86. Tension spring; 87. First conical part; 88. Second conical part; 9. Check shaft; 10. Rotating wrench; 11. Valve body limiting assembly; 111. Annular platform; 112. Sliding groove; 113. Limiting block; 12. Check limiting assembly; 121. Fixing ring; 122. Rotating groove; 123. Positioning block. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example:

[0034] Reference Figure 1 - Figure 6 The present invention discloses a ball valve body with a check valve function, comprising:

[0035] The valve body housing 1 has a valve body ball core 2 inside, a water passage hole 3 is opened inside the valve body ball core 2, a spherical cavity 4 is provided on the inner wall of the water passage hole 3, and a valve body shaft 5 is provided at the top of the valve body ball core 2, which penetrates the valve body housing 1.

[0036] Check ball core 6 is located inside the ball cavity. A through hole 7 is provided inside the check ball core 6. A check component 8 is provided inside the through hole 7. A check shaft 9 is provided at the top of the check ball core 6. The check shaft 9 passes through the valve body shaft 5.

[0037] In this embodiment, as Figure 4 As shown, the valve body shell 1 and the valve body ball core 2 together form a ball valve structure. By rotating the valve body shaft 5, the valve body ball core 2 can be rotated to achieve the closing and opening of the valve body shell 1.

[0038] The check ball core 6 is located inside the spherical cavity 4 opened inside the ball core 2 of the valve body. By rotating the check shaft 9, the position of the check ball core 6 can be adjusted, thereby adjusting the direction of the check assembly 8 and changing the check direction.

[0039] In a further preferred embodiment of this utility model, such as Figure 5 As shown, the check valve assembly 8 includes:

[0040] The fixing plate 81 has several through grooves 82 inside, and a sliding hole 83 is opened at the axis of the fixing plate 81. The outer peripheral wall of the fixing plate 81 is fixedly installed inside the through hole 7.

[0041] The sliding shaft 84 is slidably disposed inside the sliding hole 83. One end of the sliding shaft 84 is provided with a limit ring 85. The limit ring 85 and the fixed plate 81 are connected by a tension spring 86.

[0042] A baffle assembly is disposed inside the through hole 7 and is fixedly connected to the end of the sliding shaft 84 away from the limiting ring 85, for sealing the through hole 7.

[0043] In this embodiment, as Figure 5 As shown, the through hole 7 is stepped, and the fixing plate 81 is installed on the smaller diameter part of the through hole 7. When no medium passes through the valve body, the tension spring 86 is in the extended state. At this time, the limiting ring 85 moves away from the fixing plate 81 under the influence of the tension spring 86, and under the push of the tension spring 86, the baffle assembly contacts the stepped transition of the through hole 7. Figure 5 As shown, in order to block the through hole 7, the cut-off can only be pushed by the end with the spring to push the baffle assembly, and then discharged from the gap between the baffle assembly and the through hole 7 at the larger diameter position. When there is backflow of medium, the tension spring 86 will push the baffle assembly to block the through hole 7 again, thereby achieving the purpose of preventing backflow.

[0044] In a further preferred embodiment of this utility model, such as Figure 5 As shown, the baffle assembly includes:

[0045] The first tapered portion 87 is fixedly connected to the end of the sliding shaft 84 away from the limiting ring 85, and the diameter of the flat end of the first tapered portion 87 is smaller than the diameter of the through hole 7.

[0046] The second tapered portion 88 has its flat end fixedly connected to the flat end of the first tapered portion 87, and the diameter of the second tapered portion 88 is larger than the diameter of the through hole 7.

[0047] In this embodiment, as Figure 5 As shown, the diameter of the first tapered portion 87 is smaller than the minimum diameter of the through hole 7, while the diameter of the second tapered portion 88 is larger than the minimum diameter of the through hole 7 and smaller than the maximum diameter of the through hole 7. Therefore, the second tapered portion 88 can cooperate with the step of the through hole 7 to block the through hole 7, so as to prevent backflow.

[0048] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 4 and Figure 6 As shown, a rotating wrench 10 is provided at the top end of the valve body shaft 5, a valve body limiting component 11 is provided at the bottom end of the rotating wrench 10, and a check valve limiting component 12 is provided at the top end of the rotating wrench 10.

[0049] In this embodiment, the valve body limiting component 11 is used to limit the rotation angle of the valve body ball core 2, so that the valve body ball core 2 can only rotate within 90 degrees.

[0050] The check valve limit assembly 12 is used to limit the rotation angle of the check valve core 6, so that it can only rotate within 180 degrees.

[0051] In a further preferred embodiment of this utility model, such as Figure 4 and Figure 6 As shown, the valve body limiting assembly 11 includes:

[0052] An annular platform 111 is sleeved on the outer peripheral wall of the valve body shaft 5 and fixedly connected to the valve body shell 1. A sliding groove 112 is provided at the top of the annular platform 111, and a limit block 113 is slidably arranged inside the sliding groove 112. The limit block 113 is fixedly connected to the valve body shaft 5.

[0053] In this embodiment, as Figure 6 As shown, the annular platform 111 is rotatably connected to the valve body shaft 5 and fixedly connected to the valve body housing 1. Therefore, when the valve body shaft 5 is rotated, the annular platform 111 will not move accordingly. The limiting block 113 is fixedly connected to the valve body shaft 5. Therefore, when the valve body shaft 5 rotates, it will drive the limiting block 113 to move inside the slide groove 112. When the limiting block 113 moves from one end of the slide groove 112 to the other end, the valve body shaft 5 rotates at an angle of 90 degrees. When the limiting block 113 contacts one end of the slide groove 112, the axis of the water passage hole 3 is perpendicular to or coaxial with the axis of the valve body housing 1.

[0054] In a further preferred embodiment of this utility model, such as Figure 6As shown, the backflow prevention and limiting component 12 includes:

[0055] The fixed ring 121 has a rotating groove 122 inside. The fixed ring 121 is fixedly connected to the top of the inside of the rotating wrench 10 and is coaxially arranged with the check shaft 9. The rotating groove 122 has a positioning block 123 inside, and the positioning block 123 is fixedly connected to the check shaft 9.

[0056] In this embodiment, as Figure 6 As shown, the fixed ring 121 is fixedly connected to the rotating wrench 10, and the positioning block 123 is fixedly connected to the check shaft 9. When adjusting the check direction, the positioning block 123 is pushed to move inside the rotating groove 122. When the positioning block 123 moves from one end of the rotating groove 122 to the other end, the check shaft 9 rotates 180 degrees, thereby causing the check ball core 6 to rotate 180 degrees, so as to achieve the purpose of adjusting the check direction.

[0057] The implementation principle of the above embodiment is as follows: the check ball core 6 is set inside the spherical cavity 4 opened inside the ball core 2 of the valve body, and the backflow prevention purpose is achieved by the check component 8 set inside the check ball core 6, which can only pass through in one direction. The position of the check ball core 6 can be adjusted by rotating the check shaft 9, so as to adjust the check direction.

[0058] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A ball valve ball having a non-return function, characterized in that Including: The valve body shell (1) has a valve body ball core (2) inside. The valve body ball core (2) has a water passage hole (3) inside. The inner wall of the water passage hole (3) has a spherical cavity (4). The top of the valve body ball core (2) has a valve body shaft (5) that passes through the valve body shell (1). Check ball core (6) is located inside the ball cavity. A through hole (7) is provided inside the check ball core (6). A check assembly (8) is provided inside the through hole (7). A check shaft (9) is provided at the top of the check ball core (6). The check shaft (9) passes through the valve body shaft (5).

2. A ball valve ball having a non-return function according to claim 1, characterized in that The check valve assembly (8) includes: The fixing plate (81) has several through slots (82) inside, and a sliding hole (83) is opened at the axis of the fixing plate (81). The outer peripheral wall of the fixing plate (81) is fixedly installed inside the through hole (7). The sliding shaft (84) is slidably disposed inside the sliding hole (83). One end of the sliding shaft (84) is provided with a limit ring (85). The limit ring (85) and the fixed plate (81) are connected by a tension spring (86). A baffle assembly is disposed inside the through hole (7) and fixedly connected to one end of the sliding shaft (84) away from the limiting ring (85) for sealing the through hole (7).

3. A ball valve ball having a non-return function according to claim 2, characterized in that The baffle assembly includes: The first tapered portion (87) is fixedly connected to the end of the sliding shaft (84) away from the limiting ring (85), and the diameter of the flat end of the first tapered portion (87) is smaller than the diameter of the through hole (7); The second tapered part (88) has its flat end fixedly connected to the flat end of the first tapered part (87), and the diameter of the second tapered part (88) is larger than the diameter of the through hole (7).

4. A ball valve ball having a non-return function according to claim 3, characterized in that A rotating wrench (10) is provided at the top of the valve body shaft (5), a valve body limiting assembly (11) is provided at the bottom of the rotating wrench (10), and a check valve limiting assembly (12) is provided at the top of the rotating wrench (10).

5. A ball valve ball having a non-return function according to claim 4, characterized in that The valve body limiting assembly (11) includes: An annular platform (111) is fitted on the outer peripheral wall of the valve body shaft (5) and fixedly connected to the valve body shell (1). A sliding groove (112) is provided at the top of the annular platform (111). A limit block (113) is slidably arranged inside the sliding groove (112). The limit block (113) is fixedly connected to the valve body shaft (5).

6. A ball valve ball having a non-return function according to claim 5, characterized in that The backstop limit assembly (12) includes: A fixed ring (121) is provided with a rotating groove (122) inside the fixed ring (121). The fixed tube is fixedly connected to the top of the inside of the rotating wrench (10) and is coaxially arranged with the check shaft (9). A positioning block (123) is provided inside the rotating groove (122) and is fixedly connected with the check shaft (9).

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