An extended stem floating ball valve

Abstract

This utility model discloses an extended rod floating ball valve, relating to the field of valves. It includes a valve body, inside which a ball and an extended valve stem are movably connected from bottom to top. At the top of the valve body, a pressure plate and a handle are sequentially mounted on the outside of the extended valve stem from bottom to top. This utility model uses a filter screen to intercept and filter impurities in the fluid, preventing impurities from entering the valve body and affecting its performance. Because the filter screen has a conical structure in the center and an annular groove structure at the edges, impurities are easily moved towards the annular groove structure when the fluid impacts the filter screen, facilitating collection. This not only reduces the risk of clogging in the central area of ​​the filter screen but also extends the valve's service life and reduces maintenance frequency. Simultaneously, the fluid flow causes the impeller and filter screen to rotate synchronously. The centrifugal force generated by the rotating filter screen accelerates the movement of impurities into the annular groove structure, significantly improving impurity capture efficiency and filtration speed.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically an extended rod floating ball valve. Background Technology

[0002] The ball in a floating ball valve is floating. Under the pressure of the medium, the ball can generate a certain displacement and press tightly against the sealing surface at the outlet end to ensure the outlet end is sealed. The main features of the ball valve are its compact structure, reliable sealing, simple structure, convenient maintenance, and the fact that the sealing surface and the ball surface are always in a closed state, making it less susceptible to erosion by the medium. It is also easy to operate and maintain.

[0003] According to a report CN216923281U, an extended stem floating ball valve includes a valve body, a valve seat, a ball, a valve cover, a valve stem, and a handle. Packing material is provided between the valve stem and the valve cover, and a packing gland is provided at the upper end of the packing material. The valve cover and the packing gland are fastened together by bolts. The bolts pass through the lower end of the valve cover and are fixedly connected to the packing gland. A positioning boss is provided on the upper surface of the packing gland. When the handle is rotated to the open or closed position, it engages with the positioning boss to form a limiting fit.

[0004] Regarding the aforementioned solutions, the ball valve can achieve positioning in both open and closed states. However, during use, due to the lack of a filtration structure, impurities in the fluid can easily enter the ball valve, thus affecting its performance. Utility Model Content

[0005] The purpose of this utility model is to provide an extended rod floating ball valve to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an extended rod floating ball valve, comprising a valve body, wherein a ball and an extended valve stem are movably connected from bottom to top inside the valve body, and a pressure plate and a handle are sequentially arranged from bottom to top on the top of the valve body, which are sleeved on the outside of the extended valve stem. A valve cover is provided on one side of the valve body, and a threaded post is fixedly connected to the valve body. A nut is connected to one end of the threaded post that passes through the valve cover. The valve body and valve cover are respectively provided with a limiting plate and a limiting frame. A filter screen is movably connected between the limiting plate and the limiting frame. The filter screen is used to filter impurities in the fluid. The valve cover is provided with a rotating mechanism to improve the impurity capture efficiency and filtration speed.

[0007] Preferably, the limiting frame includes a connecting rod fixedly connected to the valve cover and an annular plate fixedly connected to the right side of the connecting rod, and the limiting plate cooperates with the limiting frame to make the filter screen only rotate.

[0008] Preferably, the limiting plate and the limiting frame are both internally connected with ball bearings arranged at equal angles, and the ball bearings are in contact with the filter screen.

[0009] Preferably, the middle part of the filter screen is configured as a conical structure, and the edge of the filter screen is configured as an annular groove structure.

[0010] Preferably, the rotating mechanism includes a support frame fixedly connected to the valve cover and a connecting groove opened on the left side of the filter screen. The support frame is rotatably connected to a rotating shaft through a bearing, and an impeller is installed at one end of the rotating shaft.

[0011] Preferably, the other end of the rotating shaft is fixedly connected to a connecting post that forms a locking structure with the connecting groove. The connecting post and the connecting groove cooperate to make the filter screen rotate synchronously with the impeller.

[0012] Preferably, the ball is engaged with the extended valve stem, a washer is provided at the top of the handle, and the washer is fixedly connected to the extended valve stem by small bolts, and the pressure plate is connected to the valve body by symmetrically arranged large bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This extended-stem floating ball valve uses a filter screen to intercept and filter impurities in the fluid, preventing impurities from entering the valve body and affecting its performance. The filter screen has a conical structure in the center and annular grooves at the edges, which allows impurities to easily move towards the grooves when the fluid impacts the screen, facilitating collection. This reduces the risk of clogging in the central area of ​​the filter screen, extends the valve's lifespan, and lowers maintenance frequency. Furthermore, the fluid flow causes the impeller and filter screen to rotate synchronously; the centrifugal force generated by the rotating screen accelerates the movement of impurities into the annular grooves, significantly improving impurity capture efficiency and filtration speed. Attached Figure Description

[0014] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the limiting frame and limiting plate of this utility model from a first-view perspective; Figure 5 This is a three-dimensional structural diagram of the limiting frame and limiting plate of this utility model from a second perspective; Figure 6 This is an exploded perspective view of the filter screen and connecting column of this utility model; Figure 7This is a front sectional view of the present invention.

[0015] In the diagram: 1. Valve body; 2. Valve cover; 3. Ball; 4. Extended valve stem; 5. Pressure plate; 6. Handle; 7. Filter screen; 8. Rotating mechanism; 801. Impeller; 802. Shaft; 803. Connecting column; 804. Connecting groove; 805. Support frame; 9. Limiting frame; 10. Limiting plate; 11. Ball bearing; 12. Threaded column; 13. Nut. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-3 and Figure 7 This utility model provides a technical solution: an extended rod floating ball valve, including a valve body 1, inside which a ball 3 and an extended valve stem 4 are movably connected from bottom to top. By using an extended valve stem 4, it can be used to prevent it from freezing and getting stuck. The ball 3 and the extended valve stem 4 are engaged and connected. The top of the valve body 1 is provided with a pressure plate 5 and a handle 6, which are sleeved on the outside of the extended valve stem 4, from bottom to top. A washer is provided at the top of the handle 6. The washer is fixedly connected to the extended valve stem 4 by small bolts. The pressure plate 5 is connected to the valve body 1 by symmetrically arranged large bolts. A valve cover 2 is provided on one side of the valve body 1. A threaded post 12 is fixedly connected to the valve body 1. A nut 13 is connected to one end of the threaded post 12 that passes through the valve cover 2. Specifically, when the valve is closed, fluid flows in from the inlet end, and the pressure pushes the ball 3 towards the valve seat at the outlet end, causing the ball 3 to press tightly against the sealing ring to form a forced seal. This process does not require external mechanical force and relies entirely on the fluid's own pressure to achieve zero leakage. Rotating the extended valve stem 4 causes the ball 3 to rotate 90°, making the through hole of the ball 3 perpendicular to the pipeline. The fluid pressure acts on the back of the ball 3, pushing its axial displacement to press against the outlet valve seat and block the fluid passage. Reverse rotation of the extended valve stem 4 aligns the through hole of the ball 3 with the pipeline, the fluid pressure is evenly distributed, and the ball 3 resets and disengages from the sealing surface, achieving full flow.

[0018] exist Figure 2 , Figure 4 , Figure 5 and Figure 7In the middle: the inner sides of the valve body 1 and the valve cover 2 are respectively provided with a limiting plate 10 and a limiting frame 9. The limiting frame 9 includes a connecting rod fixedly connected to the valve cover 2 and an annular plate fixedly connected to the right side of the connecting rod. The limiting plate 10 and the limiting frame 9 cooperate to limit the filter screen 7, so that the filter screen 7 only rotates. The inside of the limiting plate 10 and the limiting frame 9 are both connected with balls 11 set at equal angles, and the balls 11 contact the filter screen 7.

[0019] Specifically, the limiting plate 10 and the limiting frame 9 work together to limit the filter screen 7, so that the filter screen 7 only rotates. The ball bearing 11 reduces the friction between the filter screen 7 and the limiting plate 10 and the limiting frame 9, making the rotation of the filter screen 7 smoother.

[0020] exist Figure 1 , Figure 2 , Figure 6 and Figure 7 In the middle: A filter screen 7 is movably connected between the limiting plate 10 and the limiting frame 9. The filter screen 7 is used to filter impurities in the fluid. The middle part of the filter screen 7 is set with a conical structure, and the edge of the filter screen 7 is set with an annular groove structure.

[0021] Specifically, the filter screen 7 intercepts and filters impurities in the fluid, preventing them from entering the valve body 1 and affecting its performance. Furthermore, because the filter screen 7 has a conical structure in the middle and an annular groove structure at the edges, when the fluid impacts the filter screen 7, impurities are easily moved towards the annular groove structure for collection. This not only reduces the risk of clogging in the central area of ​​the filter screen 7 but also extends the service life of the valve and reduces the maintenance frequency.

[0022] exist Figures 1-3 and Figure 6 , Figure 7 In the middle: A rotating mechanism 8 is provided on the inner side of the valve cover 2 to improve the impurity capture efficiency and filtration speed. The rotating mechanism 8 includes a support frame 805 fixedly connected to the valve cover 2 and a connecting groove 804 opened on the left side of the filter screen 7. The support frame 805 is rotatably connected to a rotating shaft 802 through a bearing. An impeller 801 is installed at one end of the rotating shaft 802. The impeller 801 is used to drive the filter screen 7 to rotate.

[0023] Specifically, the impeller 801 rotates due to the flow of fluid. Since the filter screen 7 and the rotating shaft 802 are connected by the connecting column 803 and the connecting groove 804, the filter screen 7 rotates synchronously. The centrifugal force generated when the filter screen 7 rotates helps to accelerate the movement of impurities into the annular groove structure, significantly improving the impurity capture efficiency and filtration speed.

[0024] exist Figure 2 and Figure 5In the middle: The other end of the rotating shaft 802 is fixedly connected to a connecting post 803 that forms a locking structure with the connecting groove 804. The connecting post 803 and the connecting groove 804 cooperate to make the filter screen 7 rotate synchronously with the impeller 801.

[0025] Specifically, by engaging the connecting post 803 with the connecting groove 804, the filter screen 7 and the rotating shaft 802 can form an integral structure, thereby enabling the filter screen 7 to rotate synchronously with the impeller 801 at one end of the rotating shaft 802.

[0026] During use, fluid enters the valve body 1 from the valve cover 2. During this process, impurities in the fluid are intercepted and filtered by the filter screen 7, preventing impurities from entering the valve body 1 and affecting its performance. At the same time, the annular groove structure of the filter screen 7 collects impurities, reducing the risk of clogging in the central area of ​​the filter screen 7. During this process, the impeller 801 rotates due to the flow of fluid. The filter screen 7 rotates synchronously due to the engagement between the filter screen 7 and the rotating shaft 802. The centrifugal force generated when the filter screen 7 rotates helps to accelerate the movement of impurities into the annular groove structure, significantly improving the impurity capture efficiency and filtration speed. Electrical equipment (including but not limited to motors, electric actuators, etc.) is safely powered by an external power source and controlled by a control box. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An extended rod floating ball valve, comprising a valve body (1), wherein a ball (3) and an extended valve rod (4) are movably connected from bottom to top inside the valve body (1), and a pressure plate (5) and a handle (6) are arranged from bottom to top on the top of the valve body (1) on the outside of the extended valve rod (4), a valve cover (2) is provided on one side of the valve body (1), and a threaded post (12) is fixedly connected to the valve body (1), wherein a nut (13) is connected to one end of the threaded post (12) that passes through the valve cover (2); characterized in that: The valve body (1) and valve cover (2) are respectively provided with a limiting plate (10) and a limiting frame (9). A filter screen (7) is movably connected between the limiting plate (10) and the limiting frame (9). The filter screen (7) is used to filter impurities in the fluid. The valve cover (2) is provided with a rotating mechanism (8) to improve the impurity capture efficiency and filtration speed.

2. The extended rod floating ball valve according to claim 1, characterized in that: The limiting frame (9) includes a connecting rod fixedly connected to the valve cover (2) and an annular plate fixedly connected to the right side of the connecting rod. The limiting plate (10) cooperates with the limiting frame (9) to make the filter screen (7) only rotate.

3. The extended rod floating ball valve according to claim 2, characterized in that: The limiting plate (10) and the limiting frame (9) are both connected with rolling balls (11) arranged at equal angles, and the rolling balls (11) are in contact with the filter screen (7).

4. The extended rod floating ball valve according to claim 1, characterized in that: The filter screen (7) has a tapered structure in the middle and an annular groove structure at the edge.

5. The extended stem floating ball valve of claim 1, wherein: The rotating mechanism (8) includes a support frame (805) fixedly connected to the valve cover (2) and a connecting groove (804) opened on the left side of the filter screen (7). The support frame (805) is rotatably connected to a rotating shaft (802) through a bearing. An impeller (801) is installed at one end of the rotating shaft (802).

6. A lengthened stem floating ball valve according to claim 5, characterized in that: The other end of the rotating shaft (802) is fixedly connected to a connecting column (803) that forms a locking structure with the connecting groove (804). The connecting column (803) and the connecting groove (804) cooperate to make the filter screen (7) rotate synchronously with the impeller (801).

7. The extended rod floating ball valve according to claim 1, characterized in that: The ball (3) is engaged with the extended valve stem (4), the top of the handle (6) is provided with a washer, and the washer is fixedly connected to the extended valve stem (4) by a small bolt. The pressure plate (5) is connected to the valve body (1) by symmetrically arranged large bolts.

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