Ball body anti-rotation structure of floating type ball valve

Abstract

The utility model discloses a ball body anti-rotation structure of a floating ball valve, which comprises a valve body and a ball body unit rotatably connected on the valve body, an anti-deviation unit is arranged below the ball body unit, when fluid is conveyed, the fluid impacts a ball body, an extrusion force is generated on a bayonet socket and a connecting seat through a spring, and the ball body is prevented from rotating. Rotation of the ball body is limited, impact of fluid is resisted, the nut seat is rotated and adjusted to slide along the outer peripheral wall of the lower rotating shaft, then the nut seat pushes the extrusion seat to slide on the outer peripheral wall of the lower rotating shaft, the extrusion seat compresses the spring, the compression degree of the spring is changed, and the compression degree of the spring is changed. The extrusion force of the spring on the bayonet socket is changed, so that the rotating force of the lower rotating shaft and the ball body is limited, and the impact of fluid on the ball body is resisted.

Description

Technical Field

[0001] This utility model relates to the field of floating ball valve technology, specifically to a ball anti-rotation structure for a floating ball valve. Background Technology

[0002] A floating ball valve is a type of ball valve in which the ball can move slightly along the valve seat under the action of medium pressure, and the sealing ring is pressed against the ball by the medium pressure to achieve a seal.

[0003] The opening and closing element of a ball valve is a ball with a circular through-hole, which is connected to the valve stem. When the handle or drive device rotates the valve stem, the ball also rotates. After the ball rotates 90 degrees, it changes the shape of the passage inside the valve body, thereby opening or closing the valve.

[0004] In practical applications of floating ball valves, when water flow and pressure are excessive, the ball inside the valve will be impacted. The sealing ring alone cannot restrict the rotation of the ball within the valve body, causing the ball to deflect at an angle. This alters the water flow rate and affects fluid delivery. Furthermore, the ball's deflection is not observable during rotation, impacting both fluid delivery and valve closure. Therefore, we propose a ball anti-rotation structure for floating ball valves. Utility Model Content

[0005] The purpose of this invention is to provide a ball anti-rotation structure for a floating ball valve to solve the problems mentioned in the background art.

[0006] A ball anti-rotation structure for a floating ball valve includes a valve body and a ball unit rotatably connected to the valve body. An anti-deviation unit is disposed below the ball unit. The ball unit includes:

[0007] The main body of the ball is rotatably connected to the inner wall of the valve body;

[0008] The lower rotating shaft is fixedly connected to the bottom end face of the sphere body;

[0009] A fixed seat is fixedly connected to the bottom end of the valve body, and the lower rotating shaft is rotatably connected to the inner wall of the fixed seat;

[0010] The anti-deviation unit includes:

[0011] The indicator plate is attached to the outer peripheral wall of the valve body and is used to observe the rotation angle of the main body of the ball.

[0012] A connecting seat is fixedly connected to the outer peripheral wall of the indicator plate, and the connecting seat is slidably engaged in the fixed seat;

[0013] A plug-in socket is inserted into and pressed into the connector, the plug-in socket being used to limit the rotation of the connector.

[0014] Preferably, an upper rotating shaft is fixedly connected to the top end face of the sphere body.

[0015] Preferably, the upper and lower rotating shafts are rotatably connected to the inner wall of the valve body, and the upper and lower rotating shafts drive the ball body to rotate within the valve body.

[0016] Preferably, a spring is fixedly connected to the bottom end face of the connector.

[0017] Preferably, the spring is sleeved on the outer peripheral wall of the lower rotating shaft, and a compression seat is fixedly connected to the bottom end face of the spring.

[0018] Preferably, the extrusion seat is slidably connected to the outer peripheral wall of the lower rotating shaft.

[0019] Preferably, the outer peripheral wall of the lower rotating shaft is threaded with a nut seat, and the nut seat is in contact with the bottom end face of the extrusion seat.

[0020] By adopting the above technical solution, the rotation of the ball in the valve body is limited, preventing the ball from rotating due to fluid impact and affecting fluid delivery. At the same time, when the ball deviates, the deviance can be clearly observed, making it easy to adjust the ball to a suitable fluid delivery angle.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the anti-rotation structure of the ball in this floating ball valve,

[0022] When fluid is being transported, the fluid impacts the main body of the sphere, and the spring exerts a squeezing force on the plug and connector, which restricts the rotation of the main body of the sphere and counteracts the impact of the fluid.

[0023] By rotating the nut seat, the nut seat slides along the outer peripheral wall of the lower rotating shaft, thereby causing the nut seat to push the extrusion seat to slide on the outer peripheral wall of the lower rotating shaft, which in turn causes the extrusion seat to compress the spring, changing the degree of spring compression and the extrusion force of the spring on the insertion seat, thereby limiting the rotational force of the lower rotating shaft and the ball body to resist the impact of the fluid on the ball body.

[0024] When the main body of the ball rotates under the impact of the fluid, the rotation of the main body of the ball drives the indicator plate to rotate. By observing the angle of the indicator plate on the valve body, the deflection angle of the main body of the ball can be directly observed, which facilitates manual adjustment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the spherical unit structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the anti-deviation unit structure of this utility model.

[0028] In the diagram: 1. Valve body; 2. Ball unit; 21. Ball body; 22. Upper rotating shaft; 23. Lower rotating shaft; 24. Fixed seat; 3. Anti-deviation unit; 31. Indicator plate; 32. Connecting seat; 33. Insertion seat; 34. Pressing seat; 35. Spring; 36. Nut seat. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] Please see Figure 1-3 This utility model provides a technical solution: a ball anti-rotation structure for a floating ball valve, including a valve body 1 and a ball unit 2 rotatably connected to the valve body 1, with an anti-deviation unit 3 disposed below the ball unit 2. The ball unit 2 includes:

[0032] The ball body 21 is rotatably connected to the inner wall of the valve body 1;

[0033] The lower rotating shaft 23 is fixedly connected to the bottom end face of the sphere body 21;

[0034] The fixed seat 24 is fixedly connected to the bottom end of the valve body 1, and the lower rotating shaft 23 is rotatably connected to the inner wall of the fixed seat 24;

[0035] Anti-deviation unit 3 includes:

[0036] Indicator plate 31 is attached to the outer peripheral wall of valve body 1 and is used to observe the rotation angle of ball body 21;

[0037] Connecting seat 32 is fixedly connected to the outer peripheral wall of indicator plate 31, and connecting seat 32 is slidably engaged in fixed seat 24;

[0038] The plug-in socket 33 is inserted into and pressed inside the connector 32, and the plug-in socket 33 is used to restrict the rotation of the connector 32;

[0039] When the upper rotating shaft 22 is driven to rotate by the drive motor, the upper rotating shaft 22 drives the ball body 21 and the lower rotating shaft 23 to rotate in the valve body 1. Rotating the ball body 21 by ninety degrees will change the shape of the channel inside the valve body 1, thereby opening the valve and transmitting fluid.

[0040] As the ball body 21 and the lower rotating shaft 23 rotate, the anti-deviation unit 3 installed on the lower rotating shaft 23 rotates accordingly, causing the indicator plate 31 to rotate, so that the angle of the ball body 21 in the valve body 1 can be determined by the indicator plate 31.

[0041] By pressing the connector 33 against the connecting seat 32, the connecting seat 32 is pressed against the fixed seat 24, thereby limiting the rotation of the lower rotating shaft 23, which is used to help the ball body 21 resist the impact of the fluid and prevent the ball body 21 from rotating.

[0042] When the ball body 21 is impacted and rotates, it drives the lower rotating shaft 23 to rotate. At this time, the lower rotating shaft 23 drives the connecting seat 32 to rotate, which in turn causes the plug seat 33 and the indicator plate 31 to rotate. The rotation of the indicator plate 31 on the valve body 1 makes it easy to observe the rotation of the ball body 21 in the valve body 1.

[0043] The top end face of the sphere body 21 is fixedly connected to the upper rotating shaft 22.

[0044] The upper rotating shaft 22 and the lower rotating shaft 23 are rotatably connected to the inner wall of the valve body 1, and the upper rotating shaft 22 and the lower rotating shaft 23 drive the ball body 21 to rotate in the valve body 1.

[0045] A spring 35 is fixedly connected to the bottom end face of the plug-in seat 33. The spring 35 generates a squeezing force on the plug-in seat 33 and the connecting seat 32, which limits the rotation of the ball body 21 and resists the impact of the fluid. By adjusting the compression degree of the spring 35, the squeezing force of the spring 35 on the plug-in seat 33 is changed, thereby limiting the rotation force of the lower rotating shaft 23 and the ball body 21.

[0046] Example 2:

[0047] Spring 35 is sleeved on the outer peripheral wall of the lower rotating shaft 23, and compression seat 34 is fixedly connected to the bottom end face of spring 35.

[0048] The extrusion seat 34 is slidably connected to the outer peripheral wall of the lower rotating shaft 23. By adjusting the extrusion seat 34 to slide on the lower rotating shaft 23, the extrusion seat 34 compresses the spring 35, thereby changing the degree of compression of the spring 35 and changing the extrusion force of the spring 35 on the insertion seat 33, thereby limiting the rotation force of the lower rotating shaft 23 and the ball body 21, in order to resist the impact of the fluid on the ball body 21.

[0049] A nut seat 36 is threadedly connected to the outer peripheral wall of the lower rotating shaft 23. The nut seat 36 fits against the bottom end face of the extrusion seat 34. By rotating the nut seat 36, the nut seat 36 is adjusted to slide along the outer peripheral wall of the lower rotating shaft 23, thereby causing the nut seat 36 to push the extrusion seat 34 to slide on the outer peripheral wall of the lower rotating shaft 23, thereby causing the extrusion seat 34 to compress the spring 35.

[0050] Working principle: When the upper rotating shaft 22 is driven to rotate by the drive motor, the upper rotating shaft 22 drives the ball body 21 and the lower rotating shaft 23 to rotate in the valve body 1. Rotating the ball body 21 by 90 degrees will change the shape of the channel inside the valve body 1, thereby opening the valve and transmitting fluid.

[0051] As the ball body 21 and the lower rotating shaft 23 rotate, the anti-deviation unit 3 installed on the lower rotating shaft 23 rotates accordingly. At this time, the lower rotating shaft 23 drives the plug seat 33 to rotate. Under the action of the plug seat 33, the connecting seat 32 and the indicator plate 31 rotate simultaneously. The angle of the ball body 21 in the valve body 1 is determined by the indicator plate 31.

[0052] When fluid is being transported, the fluid impacts the main body 21 of the sphere, and the spring 35 generates a squeezing force on the plug-in seat 33 and the connecting seat 32, which limits the rotation of the main body 21 of the sphere and resists the impact of the fluid.

[0053] By rotating the nut seat 36, the nut seat 36 is adjusted to slide along the outer peripheral wall of the lower rotating shaft 23, thereby causing the nut seat 36 to push the pressing seat 34 to slide on the outer peripheral wall of the lower rotating shaft 23, thereby causing the pressing seat 34 to compress the spring 35.

[0054] At this time, the extrusion seat 34 slides on the lower rotating shaft 23. The extrusion seat 34 compresses the spring 35, thereby changing the degree of compression of the spring 35 and changing the extrusion force of the spring 35 on the insertion seat 33, thereby limiting the rotation force of the lower rotating shaft 23 and the ball body 21 to resist the impact of the fluid on the ball body 21.

[0055] When the ball body 21 rotates under the impact of the fluid, the rotation of the ball body 21 drives the indicator plate 31 to rotate. By observing the angle of the indicator plate 31 on the valve body 1, the tilt angle of the ball body 21 can be directly observed, which is convenient for manual adjustment.

Claims

1. A ball anti-rotation structure for a floating ball valve, comprising a valve body (1) and a ball unit (2) rotatably connected to the valve body (1), wherein an anti-deviation unit (3) is provided below the ball unit (2), characterized in that: The spherical unit (2) includes: The ball body (21) is rotatably connected to the inner wall of the valve body (1); The lower rotating shaft (23) is fixedly connected to the bottom end face of the sphere body (21); A fixed seat (24) is fixedly connected to the bottom end of the valve body (1), and the lower rotating shaft (23) is rotatably connected to the inner wall of the fixed seat (24); The anti-deviation unit (3) includes: The indicator plate (31) is attached to the outer peripheral wall of the valve body (1) and is used to observe the rotation angle of the ball body (21); A connecting seat (32) is fixedly connected to the outer peripheral wall of the indicator plate (31), and the connecting seat (32) is slidably engaged in the fixed seat (24); A plug-in socket (33) is inserted into and pressed into the connector (32), the plug-in socket (33) being used to restrict the rotation of the connector (32).

2. The anti-rotation structure of the floating ball valve as described in claim 1, characterized in that: The top end face of the sphere body (21) is fixedly connected to an upper rotating shaft (22).

3. The anti-rotation structure of the floating ball valve as described in claim 2, characterized in that: The upper rotating shaft (22) and the lower rotating shaft (23) are rotatably connected to the inner wall of the valve body (1), and the upper rotating shaft (22) and the lower rotating shaft (23) drive the ball body (21) to rotate in the valve body (1).

4. The anti-rotation structure of the floating ball valve as described in claim 1, characterized in that: A spring (35) is fixedly connected to the bottom end face of the plug-in (33).

5. The anti-rotation structure of the floating ball valve as described in claim 4, characterized in that: The spring (35) is sleeved on the outer peripheral wall of the lower rotating shaft (23), and the bottom end face of the spring (35) is fixedly connected to the compression seat (34).

6. The anti-rotation structure of the floating ball valve as described in claim 5, characterized in that: The extrusion seat (34) is slidably connected to the outer peripheral wall of the lower rotating shaft (23).

7. The anti-rotation structure of the floating ball valve as described in claim 6, characterized in that: The outer peripheral wall of the lower rotating shaft (23) is threaded with a nut seat (36), which is in contact with the bottom end face of the extrusion seat (34).

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