Ball valve structure

Abstract

The utility model discloses a ball valve structure, including split type valve seat, the valve seat inside movable installation has the valve body, is equipped with the flow channel with valve seat communication on the valve body, and the first impeller and second impeller are rotatoryly installed respectively in the middle part of flow channel and one end close to valve seat output, and the middle part of two sets of impeller all is equipped with through -hole, and a plurality of first brush rod close to flow channel inner wall distribution are fixedly connected between the first impeller and second impeller, and one end close to valve seat input of flow channel is fixedly covered with filter screen. In the utility model, in the medium flow process, two sets of impeller are rotated by fluid thrust, with the rotation of impeller, first brush rod constantly scrapes flow channel inner wall, and the second brush rod on the central shaft rotates synchronously, and the surface of filter screen is cleaned continuously, avoids the problem that the flow is reduced or is blocked because of the accumulation of impurity, and the influence of impurity to valve is reduced to the integration filtering and self -cleaning function, and long -term stable operation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve structure. Background Technology

[0002] A ball valve is a type of valve that uses a valve stem to rotate a ball around its axis, thereby controlling or regulating the flow of media in a pipeline. Chinese utility model patent CN209800778U discloses that, "Through the cooperation between a slip ring with a drive blade and a cleaning roller, and a tension rod with a transmission rod, a brake rod, and a tension spring, the self-cleaning ball valve, while having normal opening and closing functions, can, when cleaning the cylindrical through-hole of the ball requires, use external force to lift the tension rod. This causes the tension rod to overcome the elastic force of the tension spring and move upward, thereby changing the angle of the transmission rod. This causes the two brake rods to move closer together along the brake groove, removing the braking force exerted by the brake rods on the slip ring by the contact with the sealing diaphragm. With the self-cleaning ball valve open, the drive blades, driven by the fluid flow, drive the cleaning roller on the slip ring to clean the wall of the cylindrical through-hole of the ball, removing adhering dirt and preventing scaling."

[0003] However, the above technical solutions still have problems in long-term use: as the usage time increases, impurities in the medium are easy to adhere to the surface of the drive blades and cleaning rollers, affecting their rotation efficiency and cleaning effect, and may even cause parts to jam, reducing the reliability of the self-cleaning function. Utility Model Content

[0004] The purpose of this utility model is to provide a ball valve structure in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ball valve structure includes a split valve seat, a valve body movably mounted inside the valve seat, a valve stem rotatably mounted on the valve seat and connected to the valve body, a flow channel communicating with the valve seat on the valve body, a first impeller and a second impeller rotatably mounted in the middle of the flow channel and at one end near the output end of the valve seat respectively, a through hole in the middle of both sets of impellers, a plurality of first brush rods arranged near the inner wall of the flow channel fixedly connected between the first impeller and the second impeller, the bristles of the first brush rods contacting the inner wall of the flow channel, and a filter screen fixedly sleeved at the end of the flow channel near the input end of the valve seat.

[0007] As a further description of the above technical solution:

[0008] A central shaft is fixedly connected between the through holes of the two sets of impellers. One end of the central shaft passes through the filter screen, and a second brush rod that cooperates with the filter screen is fixedly sleeved on one end of the central shaft.

[0009] As a further description of the above technical solution:

[0010] The split valve seat includes a first valve seat and a second valve seat, and the flanges on opposite sides of the two valve seats are fixedly connected by several bolts.

[0011] As a further description of the above technical solution:

[0012] A sealing ring is installed in the open end of the opposite face of the first valve seat and the second valve seat, and the spherical surface of the valve body is tangent to the sealing ring.

[0013] As a further description of the above technical solution:

[0014] The valve body has a slot at the top, and the valve stem has a locking block fixedly connected to the bottom end, which cooperates with the slot.

[0015] As a further description of the above technical solution:

[0016] The top of the first valve seat is fixedly connected to a fixed seat, the top of the valve stem is rotatably engaged with the fixed seat, and a handle is fixedly sleeved on the top of the valve stem.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] 1. In this utility model, rotating the handle drives the valve stem and the valve body connected to it to rotate, so that the channel of the valve body is aligned with the direction of the pipeline, allowing the medium to pass through. When the medium flows through the valve body, it first passes through the filter screen for preliminary filtration, and large particles of impurities are blocked outside, reducing the risk of damage to subsequent components and ensuring the rotation and cleaning effect.

[0019] 2. In this utility model, during the flow of the medium, the first impeller and the second impeller rotate under the thrust of the fluid. As the impellers rotate, the first brush rod continuously scrapes the inner wall of the flow channel to remove the attached impurities. The second brush rod on the central shaft rotates synchronously to continuously clean the surface of the filter screen, thus avoiding the problem of reduced flow or blockage caused by the accumulation of impurities. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of a ball valve structure according to an embodiment of the present utility model is shown;

[0021] Figure 2 A top view schematic diagram of a ball valve structure according to an embodiment of the present utility model is shown;

[0022] Figure 3 It shows Figure 2 Schematic sectional view along the middle AA direction;

[0023] Figure 4It shows Figure 3 Enlarged diagram of point B in the middle.

[0024] Legend:

[0025] 1. First valve seat; 2. Second valve seat; 3. Bolt; 4. Fixing seat; 5. Handle; 6. Valve stem; 7. Valve body; 701. Slot; 8. Sealing ring; 9. First impeller; 10. First brush rod; 11. Second impeller; 12. Filter screen; 13. Central shaft; 14. Second brush rod; 15. Locking block. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a ball valve structure, including a split valve seat, in which a valve body 7 is movably installed. The split valve seat includes a first valve seat 1 and a second valve seat 2. The flanges on the opposite sides of the two sets of valve seats are fixedly connected by several bolts 3, which facilitates the installation, maintenance and replacement of internal components such as sealing rings 8. Sealing rings 8 are installed in the open ends of the opposite sides of the first valve seat 1 and the second valve seat 2. The spherical surface of the valve body 7 is tangent to the sealing rings 8, ensuring good sealing performance. A valve stem 6 connected to the valve body 7 is rotatably installed on the valve seat. A groove 701 is opened on the top of the valve body 7. A locking block 15 that cooperates with the groove 701 is fixedly connected to the bottom of the valve stem 6, realizing the synchronous rotation of the valve body 7 and the valve stem 6. A fixed seat 4 is fixedly connected to the top of the first valve seat 1. The top of the valve stem 6 is rotatably engaged with the fixed seat 4. A handle 5 is fixedly sleeved on the top of the valve stem 6 for manually operating the valve. The connection method between the valve stem 6 and the valve body 7 ensures the convenience and reliability of operation.

[0028] Specifically, such as Figure 3As shown, the valve body 7 has a flow channel communicating with the valve seat. A first impeller 9 and a second impeller 11 are rotatably mounted in the middle of the flow channel and at one end near the output end of the valve seat, respectively. Both sets of impellers have through holes in the middle. Several first brush rods 10 are fixedly connected between the first impeller 9 and the second impeller 11 and are arranged near the inner wall of the flow channel. The bristles of the first brush rods 10 are in contact with the inner wall of the flow channel, which helps to remove impurities accumulated on the inner wall. A filter screen 12 is fixedly fitted at one end of the flow channel near the input end of the valve seat, which can initially filter large particles of impurities entering the flow channel. A central shaft 13 is fixedly connected between the through holes of the two sets of impellers. The central shaft 13 and the through holes are fixedly connected by a cross rod to ensure that the liquid flows through. One end of the central shaft 13 passes through the filter screen 12, and a second brush rod 14 that cooperates with the filter screen 12 is fixedly fitted at one end of the central shaft 13 to clean the scale on the filter screen 12 and prevent clogging.

[0029] In summary, this ball valve not only possesses the functional characteristics of a traditional ball valve, but also features a specially designed filtration and automatic cleaning mechanism, effectively improving the valve's service life and operating efficiency, making it particularly suitable for working environments containing a large amount of impurities.

[0030] Working principle: When in use, rotating the handle 5 drives the valve stem 6 and the valve body 7 connected to it to rotate, so that the channel of the valve body 7 is aligned with the direction of the pipeline, allowing the medium to pass through. When the medium flows through the valve body, it first passes through the filter screen 12 for preliminary filtration. Large particles of impurities are blocked, reducing the risk of damage to subsequent components and ensuring the rotation and cleaning effect.

[0031] During the flow of the medium, the first impeller 9 and the second impeller 11 rotate under the thrust of the fluid. As the impellers rotate, the first brush rod 10 continuously scrapes the inner wall of the flow channel to remove the attached impurities. The second brush rod 14 on the central shaft 13 rotates synchronously to continuously clean the surface of the filter screen 12, thus avoiding the problem of reduced flow or blockage caused by the accumulation of impurities.

[0032] Finally, rotate handle 5 again to rotate valve body 7 to the closed position, cutting off the medium flow path. At the same time, the spherical surface of valve body 7 tightly fits the sealing ring 8 to ensure a good sealing effect and prevent leakage.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball valve structure, comprising a split valve seat, wherein a valve body (7) is movably mounted within the valve seat, and a valve stem (6) rotatably mounted on the valve seat and connected to the valve body (7), characterized in that, The valve body (7) has a flow channel communicating with the valve seat. The middle part of the flow channel and the end near the output end of the valve seat are respectively rotatably installed with a first impeller (9) and a second impeller (11). The middle part of both impellers is provided with a through hole. A number of first brush rods (10) arranged near the inner wall of the flow channel are fixedly connected between the first impeller (9) and the second impeller (11). The bristles of the first brush rods (10) are in contact with the inner wall of the flow channel. A filter screen (12) is fixedly sleeved on the end of the flow channel near the input end of the valve seat.

2. The ball valve structure according to claim 1, characterized in that, A central shaft (13) is fixedly connected between the through holes of the two sets of impellers. One end of the central shaft (13) passes through the filter screen (12), and a second brush rod (14) that cooperates with the filter screen (12) is fixedly sleeved on one end of the central shaft (13).

3. The ball valve structure according to claim 2, characterized in that, The split valve seat includes a first valve seat (1) and a second valve seat (2), and the flanges on opposite sides of the two valve seats are fixedly connected by several bolts (3).

4. The ball valve structure according to claim 3, characterized in that, A sealing ring (8) is installed in the open end of the opposite face of the first valve seat (1) and the second valve seat (2), and the spherical surface of the valve body (7) is tangent to the sealing ring (8).

5. The ball valve structure according to claim 4, characterized in that, The valve body (7) has a slot (701) at the top, and the valve stem (6) has a locking block (15) that cooperates with the slot (701) at the bottom.

6. The ball valve structure according to claim 5, characterized in that, The first valve seat (1) is fixedly connected to a fixed seat (4) at the top, the valve stem (6) is rotatably engaged with the fixed seat (4) at the top, and a handle (5) is fixedly sleeved on the top of the valve stem (6).

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