A combined ball valve convenient for maintenance and a method for using the same

Abstract

This invention discloses a modular ball valve and its usage method that are easy to maintain, belonging to the field of ball valve technology. It includes a ball valve body with three ports. Each port is sealed with a quick-release assembly. Each quick-release assembly includes an externally threaded pipe, a tapered rubber sleeve, and an internally threaded annular plate. The externally threaded pipe is flanged and connected to the port. The internally threaded annular plate is threaded onto the externally threaded pipe. The tapered rubber sleeve is made of soft rubber. An annular block is coaxially mounted on the smaller diameter end of the tapered rubber sleeve, and the annular block is coaxially mounted on the end of the externally threaded pipe furthest from the port. A rigid annular rubber pad is coaxially mounted on the larger diameter end of the tapered rubber sleeve, with a rounded outer diameter surface. A linkage assembly is provided between the annular rubber pad and the internally threaded annular plate. The modular ball valve can be quickly removed from the pipeline using the quick-release assembly, facilitating maintenance.

Description

Technical Field

[0001] This invention belongs to the field of ball valve technology, and particularly relates to a combination ball valve that is easy to maintain and its usage method. Background Technology

[0002] A ball valve is mainly composed of a valve body, a ball, a sealing ring, a valve stem, and a drive device. Ball valves and plug valves belong to the same type of valve, except that the ball valve's closing element is a ball. The ball rotates around the center line of the valve body to open and close the valve. Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of the medium.

[0003] Most existing ball valves are installed on pipelines via flange connections. Since ball valves are generally used in applications with high flow rates, regular maintenance is required to prevent leaks. However, accessing the equipment for maintenance is inconvenient due to the valve's location on the pipeline. Currently, workers typically remove the ball valve from the pipeline and move it outside the equipment for easier maintenance. However, the flange connection requires specialized tools for disassembly, which is cumbersome. Furthermore, the limited space within the equipment makes these tools difficult to use. Additionally, current ball valve models can only be installed on corresponding types of pipelines, thus limiting their applicability. Summary of the Invention

[0004] This invention provides a modular ball valve that is easy to maintain and its usage method, in order to solve the problems in the prior art.

[0005] The present invention adopts the following technical solution: a combined ball valve that is easy to maintain, including a ball valve body and a pneumatic actuator. The pneumatic actuator is installed on the ball valve body to control the opening and closing of the ball valve body. The ball valve body includes three ports, and each port is sealed with a set of quick-release components. Each set of quick-release components can quickly and securely connect its corresponding port to pipes of various specifications.

[0006] Each quick-release assembly includes an externally threaded tube, a tapered rubber sleeve, and an internally threaded annular plate. The externally threaded tube is coaxially positioned at the tube opening and connected to the tube opening flange. The internally threaded annular plate is threaded onto the externally threaded tube. The tapered rubber sleeve is made of soft rubber. An annular block is coaxially positioned at the small-diameter end of the tapered rubber sleeve, and the annular block is coaxially mounted at the end of the externally threaded tube away from the tube opening. A rigid annular rubber pad is coaxially positioned at the large-diameter end of the tapered rubber sleeve, and the outer diameter surface of the annular rubber pad is rounded. A linkage component is provided between the annular rubber pad and the internally threaded annular plate, which can cause the tapered rubber sleeve to fold outward when the internally threaded annular plate moves towards the tube opening. Multiple arc-shaped plates are evenly arranged around the outer side of the internally threaded annular plate. Multiple sets of adjustment components are provided on the internally threaded annular plate to adjust the distance between the multiple arc-shaped plates and the center of the internally threaded annular plate.

[0007] Furthermore, the linkage assembly includes multiple elastic tensioning components, which are evenly arranged around the outside of the conical rubber sleeve. The two ends of each elastic tensioning component are respectively installed on the outer wall of the external threaded tube near the conical rubber sleeve and on the annular rubber pad.

[0008] Each elastic tensioning member has a connecting rod on its outer side. The two ends of the connecting rod are respectively hinged to a first hinge seat and a second hinge seat. The first hinge seat is mounted on an annular rubber pad, and the second hinge seat is slidably disposed on its outer wall along the length of the external threaded pipe. The second hinge seat is disposed on the side of the internal threaded annular plate away from the pipe opening.

[0009] Furthermore, the outer wall of the externally threaded tube is provided with a plurality of first strip grooves along its length direction. The plurality of first strip grooves are uniformly arranged around the axis of the externally threaded tube. A plurality of second hinge seats are respectively located in the plurality of first strip grooves. The bottom of each first strip groove is provided with a sliding groove consistent with its length direction. The bottom of each second hinge seat is provided with a slider. The plurality of sliders are respectively slidably arranged in the plurality of sliding grooves.

[0010] Furthermore, the elastic tensioning element is made of a high-strength arc-shaped spring sheet and is made of a corrosion-resistant material.

[0011] Furthermore, an internally threaded tube is provided on the side of the internally threaded annular plate near the pipe opening, and the internally threaded tube is threadedly connected to the externally threaded tube. A hand-tightening knob is coaxially fixedly installed on the internally threaded tube.

[0012] Furthermore, a first flange is provided at one end of the externally threaded pipe near the pipe opening, and a second flange is provided at the pipe opening. The first flange and the second flange are fixedly connected. A first annular groove is provided on the inner side of the first flange, and a second annular groove is provided on the second flange. The first annular groove and the second annular groove cooperate to form a sealing groove for the sealing ring to be accommodated.

[0013] Furthermore, a high-strength spring is fitted onto the externally threaded pipe, and the high-strength spring is located between the first flange and the hand-tightening knob.

[0014] Furthermore, each set of adjustment components includes a rectangular rod and a locking nut. Multiple rectangular rods are fixedly installed at the inner center of multiple arc-shaped plates. Multiple rectangular grooves are arranged around one end of the internal threaded annular plate. Each rectangular groove extends to the outer wall of the internal threaded annular plate. Multiple rectangular rods are slidably arranged in multiple rectangular grooves.

[0015] Each rectangular bar has a second strip groove aligned with its length, and each rectangular groove has a threaded hole at its bottom. Multiple locking nuts pass through multiple second strip grooves and are threaded into the corresponding threaded holes.

[0016] Furthermore, each rectangular rod is provided with scale lines distributed along its length.

[0017] A method for using a modular ball valve that is easy to maintain includes the following steps:

[0018] S1: When using the combined ball valve for the first time, the staff shall determine the inner diameter of the pipe to be installed at each pipe opening. After loosening the multiple locking nuts, the staff shall adjust the multiple arc plates to the appropriate positions and then fix them in sequence with the multiple locking nuts.

[0019] S2: The operator rotates the hand-tightening knob to reduce or expand the maximum length of the rounded corner surface of the annular rubber pad to match the inner diameter of the pipe. Then, the annular rubber pad and multiple arc-shaped plates are inserted into the pipe together, and the multiple arc-shaped plates can be supported on the inner wall of the pipe.

[0020] S3: Then, the staff rotates the hand-tightening knob to make the rounded corner of the annular rubber gasket tightly press against the inner wall of the pipe, thereby completing the sealing installation between the external threaded pipe and the pipe.

[0021] S4: When the combined ball valve needs to be repaired, the staff can shut off the flow of liquid water in the pipeline, and then rotate the hand-tightening knob to release the corresponding annular rubber pad from the inner wall of the pipeline. Then the combined ball valve can be easily removed from the pipeline, which is convenient for the staff to repair the ball valve body.

[0022] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0023] Firstly, this invention, through the inclusion of a linkage component, can tightly press the annular rubber gasket against the inner wall of pipes of various diameters, thereby achieving a seal between the pipe and the ball valve body. Furthermore, multiple adjustment components allow for the individual adjustment of the positions of multiple arc-shaped plates, enabling these plates to support pipes of various diameters. This allows the ball valve body to be compatible with pipes of various diameters. When maintenance is required, workers simply need to shut off the flow of liquid in the pipe and then rotate the internally threaded annular plate to disengage the annular rubber gasket from the pipe, allowing for quick and convenient removal of the combined ball valve for easy maintenance.

[0024] Secondly, the present invention allows for easy separation of the combined ball valve from the pipeline by rotating the internally threaded annular plate to release the seal on the pipeline, facilitating the maintenance of the ball valve body. Under the action of the elastic tensioning element, the second hinge seat 354 is always in contact with the internally threaded annular plate when the operator changes the position of the internally threaded annular plate, thereby completing the adjustment of the outward folding angle of the large-diameter end of the conical rubber sleeve.

[0025] Thirdly, the present invention provides a high-strength spring between the first flange and the hand-tightening knob. Under the elastic force of the high-strength spring, a spring force can be generated on the internal threaded annular plate away from the pipe opening. This prevents the internal threaded annular plate from moving towards the pipe opening due to slight shaking of the pipe under natural conditions. Furthermore, it prevents the sealing performance of the annular rubber gasket from decreasing due to the reduced contact force between the rounded corner surface of the annular rubber gasket and the inner wall of the pipe. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the nozzle and quick-release assembly of the present invention;

[0029] Figure 3 This is a three-dimensional structural cross-sectional view of the nozzle and quick-release assembly of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the quick-release component of the present invention;

[0031] Figure 5 This is an exploded perspective view of the external threaded tube and the second hinge seat of the present invention.

[0032] Figure 6 This is an exploded three-dimensional view of the externally threaded pipe and the internally threaded annular plate of the present invention.

[0033] Figure 7 This is an exploded perspective view of the internal threaded annular plate, arc-shaped plate, and adjustment assembly of the present invention.

[0034] Figure 8 This is an exploded view of the regulating component of the present invention;

[0035] Figure 9 This is an exploded sectional view of the externally threaded pipe and the pipe opening of the present invention.

[0036] Attached Figure

[0037] 1-Ball valve body; 11-Position port; 12-Second flange; 121-Second annular groove; 2-Pneumatic actuator; 3-Quick release assembly; 31-External threaded pipe; 311-First strip groove; 312-Slide groove; 313-First flange; 3131-First annular groove; 32-Conical rubber sleeve; 321-Annular block; 33-Internal threaded annular plate; 331-Internal threaded pipe; 332-Hand-tightening knob; 333 - Rectangular groove; 334 Threaded hole; 34 Annular rubber pad; 341 Rounded corner surface; 35 Linkage assembly; 351 Elastic tensioning element; 352 Connecting rod; 353 First hinge seat; 354 ​​Second hinge seat; 3541 Slider; 36 Arc plate; 37 Adjustment assembly; 371 Rectangular rod; 3711 Second strip groove; 3712 Scale line; 372 Locking nut; 38 Spring. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Reference Figures 1 to 9As shown, this embodiment of the invention provides a modular ball valve that is easy to maintain, including a ball valve body 1 and a pneumatic actuator 2. The pneumatic actuator 2 is installed on the ball valve body 1 to control the opening and closing of the ball valve body 1. The ball valve body 1 includes three ports 11, and each port 11 is sealed with a set of quick-release components 3. Each set of quick-release components 3 can quickly and securely connect its corresponding port 11 to pipes of various specifications.

[0041] Each quick-release assembly 3 includes an externally threaded tube 31, a tapered rubber sleeve 32, and an internally threaded annular plate 33. The externally threaded tube 31 is coaxially disposed at the tube opening 11 and connected to the flange of the tube opening 11. The internally threaded annular plate 33 is threadedly connected to the externally threaded tube 31. The tapered rubber sleeve 32 is made of soft rubber. An annular block 321 is coaxially disposed at the small-diameter end of the tapered rubber sleeve 32. The annular block 321 is coaxially mounted at the end of the externally threaded tube 31 away from the tube opening 11. An internally threaded annular plate 33 is coaxially disposed at the large-diameter end of the tapered rubber sleeve 32. A rigid annular rubber pad 34 is provided, the outer diameter surface of which is set as a rounded corner surface 341. A linkage component 35 is provided between the annular rubber pad 34 and the internally threaded annular plate 33, which can drive the conical rubber sleeve 32 to fold outward when the internally threaded annular plate 33 moves towards the pipe opening 11. Multiple arc-shaped plates 36 are evenly arranged around the outer side of the internally threaded annular plate 33. Multiple sets of adjustment components 37 are provided on the internally threaded annular plate 33 for adjusting the distance between the multiple arc-shaped plates 36 and the center of the internally threaded annular plate 33.

[0042] When the pipe needs to be installed at pipe opening 11, the worker first connects the external threaded pipe 31 flange to pipe opening 11. Since the conical rubber sleeve 32 is made of soft rubber, when the worker rotates the internal threaded annular plate 33 and moves it closer to pipe opening 11, the large-diameter end of the conical rubber sleeve 32 folds outward under the action of the linkage component 35. This causes the rounded corner surface 341 of the annular rubber gasket 34 to move towards pipe opening 11 along with the large-diameter end of the conical rubber sleeve 32. Simultaneously, the maximum distance between the rounded corner surfaces 341 gradually decreases. This allows the annular rubber pad 34 to be inserted into pipes of different diameters within a certain range. It is important to note that beforehand, the operator needs to determine the inner diameter of the pipe to be installed. Then, using multiple sets of adjusting components 37, the positions of the multiple arc-shaped plates 36 are adjusted to ensure that when the internally threaded annular plate 33 is inserted into the pipe, the multiple arc-shaped plates 36 are precisely against the inner wall of the pipe, thus providing support. At this point, the rounded corner surface 341 of the annular rubber pad 34 is not against the inner wall of the pipe. Therefore, the operator can rotate the internally threaded annular plate 33 and move it away from the pipe opening 11. Moving the conical rubber sleeve 32 outwards gradually reduces the angle at which the large-diameter end folds outwards, thus gradually increasing the maximum distance of the rounded corner surface 341 of the annular rubber gasket 34, eventually bringing it against the inner wall of the pipe. The operator then rotates the internally threaded annular plate 33 again, ensuring the rounded corner surface 341 of the annular rubber gasket 34 is tightly pressed against the inner wall of the pipe, preventing liquid from seeping into the outside of the conical rubber sleeve 32. The liquid then flows through the conical rubber sleeve 32 and the externally threaded pipe 31 into the ball valve body 1. The linkage component 35 enables the annular rubber... The rubber gasket 34 presses tightly against the inner wall of pipes of various diameters, thereby sealing the pipe and the ball valve body 1. The positions of multiple arc plates 36 can be adjusted by multiple adjusting components 37, so that the multiple arc plates 36 can support pipes of various diameters. When the valve body needs to be inspected, the operator only needs to shut off the flow of liquid water in the pipe and then rotate the internal threaded annular plate 33 to disengage the annular rubber gasket 34 from the pipe. This allows the combined ball valve to be quickly and conveniently removed, facilitating the operator's maintenance.

[0043] Specifically, the linkage component 35 includes multiple elastic tensioning members 351, which are evenly arranged around the outside of the conical rubber sleeve 32. The two ends of each elastic tensioning member 351 are respectively installed on the outer wall of the external threaded tube 31 near the conical rubber sleeve 32 and on the annular rubber pad 34.

[0044] Each elastic tensioning member 351 has a connecting rod 352 on its outer side. The two ends of the connecting rod 352 are respectively hinged to a first hinge seat 353 and a second hinge seat 354. The first hinge seat 353 is mounted on the annular rubber pad 34. The second hinge seat 354 is slidably disposed on the outer wall of the external threaded tube 31 along its length direction. The second hinge seat 354 is disposed on the side of the internal threaded annular plate 33 away from the tube opening 11.

[0045] Under the action of the elastic tensioning member 351, the large-diameter end of the conical rubber sleeve 32 is always subjected to an outward flipping force. Thus, under the action of the connecting rod 352, the second hinge seat 354 slides on the external threaded pipe 31 and abuts against the internal threaded annular plate 33. When the operator rotates the internal threaded annular plate 33, causing it to move closer to the pipe opening 11, the tensioning force of the elastic tensioning member causes the large-diameter end of the conical rubber sleeve 32 to continue flipping outward. Under the action of the connecting rod 352, the second hinge seat 354 continues to slide until it abuts against the internal threaded annular plate 33. When the operator rotates the internal threaded annular plate 33 in the opposite direction, the internal threaded annular plate 33 moves away from the pipe opening 11. The internal threaded annular plate 33 then pushes the second hinge seat 354 to also move away from the pipe opening 11. Thus, under the action of the connecting rod 352, the conical rubber sleeve... As the large-diameter end of the conical rubber sleeve 32 gradually decreases in its flipping angle, the elastic tensioning element 351 gradually expands. It should be noted that when the bending angle of the conical rubber sleeve 32 gradually decreases until it is fully open, the annular rubber pad 34 is exactly in the vertical plane. At this time, the pipe diameter that the rounded corner surface 341 can contact reaches its maximum value. Under the action of the linkage component 35, the operator can seal pipes of various diameters simply by rotating the internal threaded annular plate 33 forward or backward. After the seal on the pipe is released by rotating the internal threaded annular plate 33, the combined ball valve can be easily separated from the pipe, which is convenient for the maintenance of the ball valve body 1. Under the action of the elastic tensioning element 351, the operator can ensure that the second hinge seat 354 always contacts the internal threaded annular plate 33 when changing the position of the internal threaded annular plate 33, thereby completing the adjustment of the outward flipping angle of the large-diameter end of the conical rubber sleeve 32.

[0046] Specifically, the outer wall of the externally threaded tube 31 is provided with a plurality of first strip grooves 311 along its length direction. The plurality of first strip grooves 311 are uniformly arranged around the axis of the externally threaded tube 31. A plurality of second hinge seats 354 are respectively located in the plurality of first strip grooves 311. The bottom of each first strip groove 311 is provided with a sliding groove 312 consistent with its length direction. The bottom of each second hinge seat 354 is provided with a slider 3541. The plurality of sliders 3541 are slidably arranged in the plurality of sliding grooves 312.

[0047] By providing a first strip groove 311 on the external threaded tube 31, and a sliding groove 312 at the bottom of the first strip groove 311, and a slider 3541 that slides in cooperation with the sliding groove 312 on the slider 3541, the second hinge seat 354 can be slidably disposed along the length direction of the external threaded tube 31. By providing the first strip groove 311, the second hinge seat 354 can be completely placed in the first strip groove 311, thereby avoiding damage to the threads of the external threaded tube 31 when the second hinge seat 354 slides.

[0048] Specifically, the elastic tensioning member 351 is made of a high-strength arc-shaped spring sheet and is made of a corrosion-resistant material.

[0049] By using a high-strength arc-shaped spring sheet for the elastic tensioning element 351, the arc-shaped spring sheet should be located outside the conical rubber sleeve 32 and bend outward into an arc surface when it is not subjected to external force. At this time, the arc-shaped spring sheet should drive the large-diameter end of the conical rubber sleeve 32 to fold outward, thereby generating a tension on the conical rubber sleeve 32, ensuring that the second hinge seat 354 always abuts against the internal threaded annular plate 33. By using a corrosion-resistant material for the elastic tensioning element 351, corrosion of the elastic tensioning element 351 due to long-term humid conditions at the pipe connection can be avoided, thus preventing the loss of elasticity of the elastic tensioning element 351.

[0050] Specifically, the internally threaded annular plate 33 is provided with an internally threaded tube 331 coaxial with it on the side near the tube opening 11. The internally threaded tube 331 is threadedly connected to the externally threaded tube 31, and a hand-tightening knob 332 is coaxially fixedly installed on the internally threaded tube 331.

[0051] A hand-tightening knob 332 is installed on the internally threaded pipe 331. By turning the knob 332, the internally threaded annular plate 33 can rotate together with the internally threaded pipe 331, thereby adjusting the position of the internally threaded annular plate 33. By adjusting the depth of the annular rubber pad 34 inserted into the pipe, when the operator turns the knob 332 and the rounded corner surface 341 of the annular rubber pad 34 abuts against the inner wall of the pipe, the knob 332 rests against the end of the pipe, thereby enhancing the stability of the connection between the combined ball valve and the pipe. The hand-tightening knob 332 also makes it easier for the operator to rotate the internally threaded annular plate 33, further facilitating the removal of the combined ball valve from the pipe for maintenance.

[0052] Specifically, a first flange 313 is provided at one end of the externally threaded pipe 31 near the pipe opening 11, and a second flange 12 is provided at the pipe opening 11. The first flange 313 and the second flange 12 are fixedly connected. A first annular groove 3131 is provided on the inner side of the first flange 313, and a second annular groove 121 is provided on the second flange 12. The first annular groove 3131 and the second annular groove 121 cooperate to form a sealing groove for the sealing ring to be accommodated.

[0053] By providing a first flange 313 and a second flange 12, the technical effect of flange connection between the external threaded pipe 31 and the pipe opening 11 can be achieved. By providing a first annular groove 3131 and a second annular groove 121 on the first flange 313 and the second flange 12 respectively, and when the first flange 313 and the second flange 12 are connected together, the first annular groove 3131 and the second annular groove 121 can cooperate to form a complete sealing groove for accommodating a sealing ring. Placing a sealing ring in the sealing groove can enhance the sealing effect between the external threaded pipe 31 and the pipe opening 11.

[0054] Specifically, a high-strength spring 38 is fitted onto the externally threaded tube 31, and the high-strength spring 38 is located between the first flange 313 and the hand-tightening knob 332.

[0055] By setting a high-strength spring 38 between the first flange 313 and the hand-tightening knob 332, the spring force of the high-strength spring 38 can generate a spring force on the internal thread annular plate 33 away from the pipe opening 11, thereby preventing the internal thread annular plate 33 from moving towards the pipe opening 11 due to slight shaking of the pipe under natural conditions. Furthermore, it prevents the sealing performance of the annular rubber gasket 34 from decreasing due to the reduced contact force between the rounded corner surface 341 of the annular rubber gasket 34 and the inner wall of the pipe.

[0056] Specifically, each set of adjustment components 37 includes a rectangular rod 371 and a locking nut 372. Multiple rectangular rods 371 are fixedly installed at the inner center of multiple arc plates 36. Multiple rectangular grooves 333 are arranged around one end of the internal threaded annular plate 33. Each rectangular groove 333 extends to the outer wall of the internal threaded annular plate 33. Multiple rectangular rods 371 are slidably arranged in multiple rectangular grooves 333.

[0057] Each rectangular rod 371 is provided with a second strip groove 3711 that is consistent with its length direction. Each rectangular groove 333 has a threaded hole 334 at its bottom. Multiple locking nuts 372 pass through multiple second strip grooves 3711 and are threaded into the corresponding threaded holes 334.

[0058] Before adjusting the positions of the multiple arc plates 36, the inner diameter of the pipe to be installed needs to be determined. Then, the workers loosen the multiple locking nuts 372 in sequence, and then pull the multiple arc plates 36 in sequence so that the rectangular rods 371 on the arc plates 36 slide in the corresponding rectangular grooves 333. When the diameter of the outer wall of the arc plate 36 to the center of the internal threaded annular plate 33 is consistent, the workers tighten the locking nuts 372. This completes the fixing of the arc plates 36. After all the positions of the arc plates 36 are fixed, the workers insert the internal threaded annular plate 33 into the pipe, and the multiple arc plates 36 can be supported in the pipe, thereby completing the stability between the pipe and the combined ball valve.

[0059] Specifically, each rectangular rod 371 is provided with scale lines 3712 distributed along its length.

[0060] By setting a scale line 3712 on the rectangular rod 371, the position of the rectangular rod 371 and the arc plate 36 can be guaranteed according to the scale line 3712 when the operator adjusts the position of the arc plate 36, which facilitates the operator's adjustment.

[0061] A method for using a modular ball valve that is easy to maintain includes the following steps:

[0062] S1: When using the combined ball valve for the first time, the staff shall determine the inner diameter of the pipe to be installed at each port 11. After loosening the multiple locking nuts 372, the staff shall adjust the multiple arc plates 36 to the appropriate position and then fix them in sequence with the multiple locking nuts 372.

[0063] S2: The operator rotates the hand-tightening knob 332 to reduce or expand the maximum length of the rounded corner surface 341 of the annular rubber pad 34 to match the inner diameter of the pipe. Then, the annular rubber pad 34 and multiple arc plates 36 are inserted into the pipe together, and the multiple arc plates 36 can be supported on the inner wall of the pipe.

[0064] S3: Then, the staff rotates the hand-tightening knob 332 to make the rounded corner surface 341 of the annular rubber pad 34 tightly press against the inner wall of the pipe, thereby completing the sealing installation between the external threaded pipe 31 and the pipe.

[0065] S4: When the combined ball valve needs to be repaired, the staff can shut off the flow of liquid water in the pipeline and then rotate the hand-turn knob 332 to release the corresponding annular rubber pad 34 from the inner wall of the pipeline. Then the combined ball valve can be easily removed from the pipeline, which is convenient for the staff to repair the ball valve body 1.

[0066] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A modular ball valve for easy maintenance, comprising a ball valve body (1) and a pneumatic actuator (2), wherein the pneumatic actuator (2) is mounted on the ball valve body (1) for controlling the on / off state of the ball valve body (1), characterized in that, The ball valve body (1) includes three ports (11), and each port (11) is sealed with a set of quick-release components (3). Each set of quick-release components (3) can quickly and securely connect its corresponding port (11) to pipes of various specifications. Each quick-release assembly (3) includes an externally threaded tube (31), a tapered rubber sleeve (32), and an internally threaded annular plate (33). The externally threaded tube (31) is coaxially disposed at the pipe opening (11) and connected to the flange of the pipe opening (11). The internally threaded annular plate (33) is threaded onto the externally threaded tube (31). The tapered rubber sleeve (32) is made of soft rubber. An annular block (321) is coaxially disposed at the small-diameter end of the tapered rubber sleeve (32). The annular block (321) is coaxially installed at the end of the externally threaded tube (31) away from the pipe opening (11). The large-diameter end of the tapered rubber sleeve (32) is coaxially disposed at... There is a rigid annular rubber pad (34), the outer diameter surface of the annular rubber pad (34) is set as a rounded corner surface (341), and a linkage component (35) is provided between the annular rubber pad (34) and the internal thread annular plate (33) to drive the conical rubber sleeve (32) to fold outward when the internal thread annular plate (33) moves towards the pipe opening (11). Multiple arc plates (36) are uniformly arranged around the outer side of the internal thread annular plate (33), and multiple sets of adjustment components (37) are provided on the internal thread annular plate (33) for adjusting the distance from the multiple arc plates (36) to the center of the internal thread annular plate (33). The internal threaded annular plate (33) is provided with an internal threaded tube (331) coaxial with the tube opening (11) on the side of the internal threaded plate (33). The internal threaded tube (331) is threadedly connected to the external threaded tube (31). A hand-tightening knob (332) is coaxially fixedly installed on the internal threaded tube (331). Each set of adjustment components (37) includes a rectangular rod (371) and a locking nut (372). Multiple rectangular rods (371) are fixedly installed at the inner center of multiple arc plates (36). Multiple rectangular grooves (333) are arranged around one end of the internal threaded annular plate (33). Each rectangular groove (333) extends to the outer wall of the internal threaded annular plate (33). Multiple rectangular rods (371) are slidably arranged in multiple rectangular grooves (333). Each rectangular bar (371) is provided with a second strip groove (3711) that is consistent with its length direction. Each rectangular groove (333) has a threaded hole (334) at its bottom. Multiple locking nuts (372) pass through multiple second strip grooves (3711) and are threaded into the corresponding threaded holes (334).

2. The combination ball valve for easy maintenance according to claim 1, characterized in that, The linkage assembly (35) includes multiple elastic tensioning elements (351), which are evenly arranged around the outside of the conical rubber sleeve (32). The two ends of each elastic tensioning element (351) are respectively installed on the outer wall of the external threaded pipe (31) near the conical rubber sleeve (32) and on the annular rubber pad (34). Each elastic tensioning member (351) has a connecting rod (352) on its outer side. The two ends of the connecting rod (352) are respectively hinged to a first hinge seat (353) and a second hinge seat (354). The first hinge seat (353) is mounted on an annular rubber pad (34). The second hinge seat (354) is slidably disposed on the outer wall of the external threaded tube (31) along its length direction. The second hinge seat (354) is disposed on the side of the internal threaded annular plate (33) away from the tube opening (11).

3. A combination ball valve for ease of maintenance according to claim 2, wherein The outer wall of the external threaded tube (31) is provided with a plurality of first strip grooves (311) along its length direction. The plurality of first strip grooves (311) are uniformly arranged around the axis of the external threaded tube (31). A plurality of second hinge seats (354) are respectively located in the plurality of first strip grooves (311). The bottom of each first strip groove (311) is provided with a sliding groove (312) consistent with its length direction. The bottom of each second hinge seat (354) is provided with a slider (3541). The plurality of sliders (3541) are respectively slidably arranged in the plurality of sliding grooves (312).

4. The combination ball valve for easy maintenance according to claim 3, wherein The elastic tensioning element (351) is made of high-strength arc-shaped spring sheet and is made of corrosion-resistant material.

5. A modular ball valve for ease of maintenance according to claim 4, wherein The externally threaded pipe (31) is provided with a first flange (313) at one end near the pipe opening (11), and a second flange (12) is provided at the pipe opening (11). The first flange (313) and the second flange (12) are fixedly connected. The inner side of the first flange (313) is provided with a first annular groove (3131), and the second flange (12) is provided with a second annular groove (121). The first annular groove (3131) and the second annular groove (121) cooperate to form a sealing groove for the sealing ring to be accommodated.

6. A combination ball valve for ease of maintenance according to claim 5, wherein A high-strength spring (38) is fitted onto the externally threaded pipe (31), and the high-strength spring (38) is located between the first flange (313) and the hand-tightening knob (332).

7. A combination ball valve for ease of maintenance according to claim 6, wherein Each rectangular bar (371) has scale lines (3712) distributed along its length.

8. The method of using a modular ball valve for ease of maintenance according to any one of claims 1-7, wherein, The method of use includes the following steps: S1: When using the combined ball valve for the first time, the staff shall determine the inner diameter of the pipe to be installed at each port (11). After loosening the multiple locking nuts (372), the staff shall adjust the multiple arc plates (36) to the appropriate position and then fix them in sequence with the multiple locking nuts (372). S2: The operator rotates the hand-tightening knob (332) to reduce or expand the maximum length of the rounded corner surface (341) of the annular rubber pad (34) to match the inner diameter of the pipe. Then, the annular rubber pad (34) and multiple arc plates (36) are inserted into the pipe together, and the multiple arc plates (36) can be supported on the inner wall of the pipe. S3: Then, the staff rotates the hand-tightening knob (332) to make the rounded corner surface (341) of the annular rubber pad (34) tightly abut against the inner wall of the pipe, thereby completing the sealing installation between the external threaded pipe (31) and the pipe. S4: When the combined ball valve needs to be repaired, the staff can shut off the flow of liquid water in the pipeline and then rotate the hand-tightening knob (332) to release the corresponding annular rubber pad (34) from the inner wall of the pipeline. Then the combined ball valve can be easily removed from the pipeline, which is convenient for the staff to repair the ball valve body (1).

Images