Quickly-closed cut-off ball valve

Abstract

The utility model relates to a ball valve, belongs to the technical field of ball valves, in particular to a quick-closing cut-off ball valve, which comprises a lower valve body, two flange plates and an upper valve body, the two flange plates are respectively and fixedly mounted at two ends of the lower valve body, the upper valve body is mounted above the lower valve body, a valve core is movably mounted in the lower valve body, and the valve core is movably mounted in the lower valve body. A cylindrical groove is formed in the valve element, a valve rod is fixedly installed on the top of the valve element, the valve rod upwards penetrates through the top wall face of the upper valve body, a rotating handle is fixedly installed on the valve rod, two sealing rings are installed at the positions, corresponding to the valve element, in the lower valve body, the sealing rings are attached to the side wall of the valve element, and movable grooves are formed in the positions, corresponding to the sealing rings, in the lower valve body. A mounting ring is movably mounted in the movable groove, the mounting ring is fixedly connected with the sealing ring, and a mounting spring is mounted on the side, close to the valve element, in the movable groove; through the arrangement of the movable mechanism, the sealing performance of the valve core after rotation is improved.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a quick-closing shut-off ball valve. Background Technology

[0002] A ball valve is a common type of valve that controls the flow of fluid by rotating an internal spherical shut-off element.

[0003] A search of Chinese patent CN220792123U reveals a shut-off ball valve, relating to the field of shut-off ball valve technology. The valve includes a shut-off ball valve body, a valve core ball, a valve stem, a handle, and a cleaning roller. The valve core ball is rotatably mounted inside the shut-off ball valve body. A valve stem is fixedly mounted on the top of the valve core ball, and a handle is fixedly mounted on the top of the valve stem. Two sets of cleaning rollers are provided inside the shut-off ball valve body. A cleaning mechanism is provided inside the shut-off ball valve body for cleaning the interior of the valve body. A tightening mechanism is provided inside the cleaning rollers to ensure the cleaning rollers are tightly attached to the inner wall of the shut-off ball valve body, thereby improving the cleaning effect. A fixing mechanism is provided at one end of the cleaning rollers. This patent achieves the effect of cleaning the accumulated dirt in the water flow channels inside the shut-off ball valve body after long-term use through the cleaning mechanism, tightening mechanism, and fixing mechanism.

[0004] Based on the above search results and existing technologies, the following findings were made:

[0005] Existing ball valves rely solely on the internal spherical shut-off element for sealing during use. Over time, this friction can create gaps between the spherical shut-off element and the valve body, thus affecting the valve's sealing performance. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a quick-closing shut-off ball valve, which improves the sealing performance of the valve core after rotation.

[0007] The technical solution to achieve the purpose of this utility model is as follows: a quick-closing shut-off ball valve, including a lower valve body, a flange, and an upper valve body. There are two flanges, which are fixedly installed at both ends of the lower valve body. The upper valve body is installed above the lower valve body. A valve core is movably installed inside the lower valve body. A cylindrical groove is opened on the valve core. A valve stem is fixedly installed on the top of the valve core. The valve stem extends upward through the top wall of the upper valve body. A handle is fixedly installed on the valve stem. Two sealing rings are installed inside the lower valve body at the position corresponding to the valve core. The sealing rings fit against the side wall of the valve core. A movable groove is opened inside the lower valve body at the position corresponding to the sealing rings. An installation ring is movably installed inside the movable groove. The installation ring is fixedly connected to the sealing ring. An installation spring is installed inside the movable groove near the valve core. The installation spring is connected to the installation ring. The sealing ring is movably installed inside the lower valve body through the installation ring and the installation spring. A movable mechanism is provided inside the lower valve body.

[0008] In some embodiments, the movable mechanism includes a transmission block, a drive block, and a pressing rod. A transmission groove is provided inside the upper part of the lower valve body. The top of the transmission block is inclined. There are two transmission blocks, which are symmetrically embedded in the two sides inside the transmission groove. The bottom of the transmission block is located inside the movable groove. There are two drive blocks, which are fixedly installed on the side wall away from the valve core on the mounting ring. The inclined surface of the drive block corresponds to the bottom of the transmission block. The pressing rod is fixedly sleeved on the valve stem and is located inside the transmission groove.

[0009] In some embodiments, a reset groove is provided inside the lower valve body at the position corresponding to the transmission block. A reset block is movably installed above the inside of the reset groove. The reset block is fixedly connected to the transmission block. A reset spring connected to the reset block is movably installed below the inside of the reset groove. The transmission block is movably installed inside the transmission groove through the reset block and the reset spring.

[0010] In some embodiments, a plurality of fixing bolts are fixedly installed on the top of the lower valve body, and a circular hole of the same size as the fixing bolts is opened on the upper valve body. A fixing nut is movably installed on the fixing bolt by means of threads. The upper valve body is fixedly installed on the top of the lower valve body by the fixing bolts and the fixing nut.

[0011] In some embodiments, a mounting rod is fixedly installed at the bottom of the valve core. The mounting rod is movably installed inside the lower valve body. A mounting bearing is embedded inside the lower valve body. The mounting rod is fixedly installed on the inner ring of the mounting bearing. The valve core is movably installed inside the lower valve body through the mounting rod and the mounting bearing.

[0012] In some embodiments, the top of the lower valve body is provided with a plurality of positioning grooves in an annular shape, and the bottom of the upper valve body is fixedly installed with a plurality of rectangular blocks that are adapted to the positioning grooves.

[0013] Compared with existing technologies, the significant advantages of this invention are:

[0014] The utility model utilizes a movable mechanism. When the valve stem is rotated, the valve core rotates and seals the interior of the lower valve body. Simultaneously, the extrusion rod rotates with the valve stem. As the extrusion rod rotates, it extrudes the inclined surface at the top of the transmission block. When the transmission block is extruded, it moves downward. This downward movement of the transmission block extrudes the inclined surface of the drive block. The extruded inclined surface of the drive block moves towards the mounting ring, which in turn moves the sealing ring towards the valve core. This extrusion ensures a tight fit between the sealing ring and the valve core. At this point, the gaps between the lower valve body, the valve core, and the sealing ring are filled due to the deformation of the sealing ring caused by the extrusion, thereby improving the sealing performance of the valve core after rotation. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main structure provided in one embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the internal structure provided in one embodiment of the present invention;

[0018] Figure 3 This utility model provides in one embodiment Figure 2 Enlarged view of point A in the middle.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Lower valve body; 2. Flange; 3. Upper valve body; 4. Fixing bolt; 5. Fixing nut; 6. Valve core; 7. Valve stem; 8. Rotary handle; 9. Sealing ring; 10. Movable groove; 11. Mounting ring; 12. Mounting spring; 13. Transmission groove; 14. Transmission block; 15. Drive block; 16. Pressing rod; 17. Reset groove; 18. Reset block; 19. Reset spring; 20. Mounting rod; 21. Mounting bearing; 22. Positioning groove. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved quick-closing shut-off ball valve. The technical solution of this utility model is as follows:

[0023] like Figures 1 to 3 As shown, a quick-closing shut-off ball valve includes a lower valve body 1, a flange 2, and an upper valve body 3. There are two flanges 2, which are fixedly installed at both ends of the lower valve body 1. The upper valve body 3 is installed above the lower valve body 1. The lower valve body 1 is connected to an external pipeline through the flanges 2. A valve core 6 is movably installed inside the lower valve body 1. The valve core 6 has a spherical structure and a cylindrical groove. A valve stem 7, also cylindrical, is fixedly installed on the top of the valve core 6, extending upwards through the top wall of the upper valve body 3. A handle 8 is fixedly installed on the valve stem 7. Rotating the handle 8 causes the valve core 6 to rotate via the valve stem 7. When the valve core 6 rotates to a position where the cylindrical groove on the valve core 6 is perpendicular to the lower valve body 1, the lower valve body 1 is closed. Two sealing rings 9 are installed inside the valve body 1 at the position corresponding to the valve core 6. The sealing rings 9 are annular structures made of relatively soft material. The sealing rings 9 fit against the side wall of the valve core 6. The sealing rings 9 are used to seal the gap between the valve core 6 and the lower valve body 1 when the valve core 6 rotates. A movable groove 10 is opened inside the lower valve body 1 at the position corresponding to the sealing rings 9. The movable groove 10 is a rectangular groove. An installation ring 11 is movably installed inside the movable groove 10. The installation ring 11 is a rectangular structure and is fixedly connected to the sealing rings 9. An installation spring 12 is installed inside the movable groove 10 on the side near the valve core 6. The installation spring 12 is connected to the installation ring 11. The sealing rings 9 are movably installed inside the lower valve body 1 through the installation ring 11 and the installation spring 12. The lower valve body 1 is provided with a movable mechanism.

[0024] The moving mechanism includes a transmission block 14, a drive block 15, and a pressing rod 16. A transmission groove 13, circular in shape, is located above the interior of the lower valve body 1. The transmission block 14 is a trapezoidal block with a sloping top. There are two transmission blocks 14, symmetrically embedded on both sides of the transmission groove 13, with their bottoms located inside the moving groove 10. The drive block 15 is a triangular block, also two in shape, fixedly mounted on the mounting ring 11 on the side wall away from the valve core 6, with its sloping surface corresponding to the bottom of the transmission block 14. The pressing rod 16 is a rectangular rod with an arc-shaped sidewall, fixedly sleeved on the valve stem 7, and located inside the transmission groove 13. The mechanism is designed so that when the valve stem 7 is rotated, the valve core 6 rotates and seals the interior of the lower valve body 1. At the same time, the extrusion rod 16 rotates with the valve stem 7. When the extrusion rod 16 rotates, it extrudes the inclined surface at the top of the transmission block 14. When the transmission block 14 is extruded, it moves downward. The downward movement of the transmission block 14 extrudes the inclined surface of the drive block 15. When the inclined surface of the drive block 15 is extruded, it moves towards the mounting ring 11, which in turn moves the sealing ring 9 towards the valve core 6. The extrusion allows the sealing ring 9 to fit tightly against the valve core 6. At this time, the gap between the lower valve body 1, the valve core 6, and the sealing ring 9 is filled due to the deformation caused by the extrusion of the sealing ring 9, thereby improving the sealing performance of the valve core 6 after rotation.

[0025] A reset groove 17 is provided inside the lower valve body 1 at the position corresponding to the transmission block 14. The reset groove 17 is a rectangular groove. A reset block 18 is movably installed above the reset groove 17. The reset block 18 is a rectangular block. The reset block 18 is fixedly connected to the transmission block 14. A reset spring 19 connected to the reset block 18 is movably installed below the reset groove 17. The transmission block 14 is movably installed inside the transmission groove 13 through the reset block 18 and the reset spring 19. When the transmission block 14 moves, the reset block 18 will squeeze the reset spring 19. When the squeezing rod 16 separates from the transmission block 14, the reset spring 19 will release its elastic force to drive the transmission block 14 to reset.

[0026] Multiple fixing bolts 4 are fixedly installed on the top of the lower valve body 1. The fixing bolts 4 are cylindrical structures with threads. The upper valve body 3 has a circular hole of the same size as the fixing bolts 4. A fixing nut 5 is installed on the fixing bolts 4 by means of threads. The upper valve body 3 is fixedly installed on the top of the lower valve body 1 by the fixing bolts 4 and the fixing nut 5.

[0027] A mounting rod 20 is fixedly installed at the bottom of the valve core 6. The mounting rod 20 is cylindrical and is movably installed inside the lower valve body 1. A mounting bearing 21 is embedded inside the lower valve body 1. The mounting rod 20 is fixedly installed on the inner ring of the mounting bearing 21. The valve core 6 is movably installed inside the lower valve body 1 through the mounting rod 20 and the mounting bearing 21.

[0028] The top of the lower valve body 1 has multiple positioning grooves 22 in an annular shape. The positioning grooves 22 are rectangular grooves. The bottom of the upper valve body 3 has multiple rectangular blocks that are adapted to the positioning grooves 22. When the upper valve body 3 is fixedly installed on the lower valve body 1, the rectangular blocks on the upper valve body 3 are located inside the positioning grooves 22, thereby improving the stability of the connection between the lower valve body 1 and the upper valve body 3.

[0029] The specific working method is as follows:

[0030] With the arrangement of the moving mechanism, when the valve stem 7 is rotated, the valve core 6 rotates and seals the interior of the lower valve body 1. At the same time, the extrusion rod 16 rotates with the valve stem 7. When the extrusion rod 16 rotates, it will extrude the inclined surface at the top of the transmission block 14. When the transmission block 14 is extruded, it will move downward. The downward movement of the transmission block 14 will extrude the inclined surface of the drive block 15. After the inclined surface of the drive block 15 is extruded, it will drive the installation ring 11 to move in the direction of the installation ring 11. The installation ring 11 can then drive the sealing ring 9 to move in the direction of the valve core 6. The extrusion can make the sealing ring 9 and the valve core 6 fit tightly together. At this time, the gap between the lower valve body 1, the valve core 6 and the sealing ring 9 will be filled due to the deformation caused by the extrusion of the sealing ring 9, thereby improving the sealing performance of the valve core 6 after rotation.

[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A quick-closing shut-off ball valve, comprising a lower valve body (1), a flange (2), and an upper valve body (3), wherein there are two flanges (2), which are respectively fixedly installed at both ends of the lower valve body (1), and the upper valve body (3) is installed above the lower valve body (1), characterized in that: A valve core (6) is movably installed inside the lower valve body (1). A cylindrical groove is opened on the valve core (6). A valve stem (7) is fixedly installed on the top of the valve core (6). The valve stem (7) extends upward through the top wall of the upper valve body (3). A handle (8) is fixedly installed on the valve stem (7). Two sealing rings (9) are installed inside the lower valve body (1) at the position corresponding to the valve core (6). The sealing rings (9) fit against the side wall of the valve core (6). The lower valve body (1) has openings at the positions corresponding to the sealing rings (9). A movable groove (10) is provided, and an installation ring (11) is movably installed inside the movable groove (10). The installation ring (11) is fixedly connected to the sealing ring (9). An installation spring (12) is installed inside the movable groove (10) on the side close to the valve core (6). The installation spring (12) is connected to the installation ring (11). The sealing ring (9) is movably installed inside the lower valve body (1) through the installation ring (11) and the installation spring (12). A movable mechanism is provided inside the lower valve body (1).

2. The quick-closing shut-off ball valve according to claim 1, characterized in that: The active mechanism includes a transmission block (14), a drive block (15), and a pressing rod (16). A transmission groove (13) is provided on the upper part of the lower valve body (1). The top of the transmission block (14) is inclined. There are two transmission blocks (14). The two transmission blocks (14) are symmetrically embedded in the two sides of the transmission groove (13). The bottom of the transmission block (14) is located inside the active groove (10). There are two drive blocks (15). The drive block (15) is fixedly installed on the side wall away from the valve core (6) on the mounting ring (11). The inclined surface of the drive block (15) corresponds to the bottom of the transmission block (14). The pressing rod (16) is fixedly sleeved on the valve stem (7) and the pressing rod (16) is located inside the transmission groove (13).

3. The quick-closing shut-off ball valve according to claim 1, characterized in that: The lower valve body (1) has a reset groove (17) at the position corresponding to the transmission block (14). A reset block (18) is movably installed in the upper part of the reset groove (17). The reset block (18) is fixedly connected to the transmission block (14). A reset spring (19) connected to the reset block (18) is movably installed in the lower part of the reset groove (17). The transmission block (14) is movably installed in the transmission groove (13) through the reset block (18) and the reset spring (19).

4. A quick-closing shut-off ball valve according to claim 1, characterized in that: The top of the lower valve body (1) is fixedly installed with multiple fixing bolts (4), and the upper valve body (3) has a circular hole of the same size as the fixing bolts (4). The fixing bolts (4) are movably installed with fixing nuts (5) by thread. The upper valve body (3) is fixedly installed on the top of the lower valve body (1) by fixing bolts (4) and fixing nuts (5).

5. A quick-closing shut-off ball valve according to claim 1, characterized in that: The bottom of the valve core (6) is fixedly installed with an installation rod (20), which is inlaid and movably installed inside the lower valve body (1). The lower valve body (1) is inlaid with an installation bearing (21), and the installation rod (20) is fixedly installed on the inner ring of the installation bearing (21). The valve core (6) is movably installed inside the lower valve body (1) through the installation rod (20) and the installation bearing (21).

6. A quick-closing shut-off ball valve according to claim 1, characterized in that: The top of the lower valve body (1) is provided with a plurality of positioning grooves (22) in an annular shape, and the bottom of the upper valve body (3) is fixedly installed with a plurality of rectangular blocks that are adapted to the positioning grooves (22) at the positions corresponding to the positioning grooves (22).

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