Adaptive bi-directional flow resistance adjustable low noise regulating ball valve and method

Abstract

The application discloses a self-adaptive low-noise regulating ball valve with adjustable bidirectional flow resistance and a method thereof. The ball valve comprises a valve body, a regulating valve rod, a valve ball, a valve seat assembly and a valve core assembly. The valve body is provided with a first valve port and a second valve port at two ends respectively for inputting and discharging liquid. The valve ball is rotationally limited in the valve body and is provided with a fluid passage penetrating through the valve ball. The valve core assembly is arranged in the fluid passage and comprises a throttling disc and a flow guide disc. The throttling disc is provided with flow guide holes and the flow guide disc is provided with flow guide grooves. Adjacent flow guide holes and flow guide grooves are not on the same axis. The ball valve of the application forms a liquid spiral cavity through the fluid path formed by adjacent flow guide holes and flow guide grooves. When the fluid medium passes through the valve core assembly, the fluid flows along the spiral path, the speed and direction of the fluid gradually change, the pressure drop is gradually reduced, multi-stage throttling and noise reduction are realized, different flow resistance values can be realized through different combinations of the valve core assembly, and the flow resistance can be adjusted under the premise of the same specification and model.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of regulating valve devices, and more particularly, to a self-adaptive bidirectional flow resistance adjustable low-noise regulating ball valve and method. BACKGROUND

[0002] In fluid control systems, ball valves are widely used due to their simple structure, convenient operation, good sealing performance, and other advantages. However, under certain working conditions, such as high pressure, high flow rate, or fluid environment containing particulate impurities, traditional ball valves may face challenges in flow regulation, such as inaccurate flow regulation, large fluid resistance fluctuations, accelerated wear of valve body and sealing surface, noise and vibration during operation, poor work reliability, and inconvenient disassembly and maintenance of regulating components.

[0003] Currently, research on regulating ball valves mostly focuses on structure optimization, material selection, and control method improvement. Existing technologies mainly improve flow regulation accuracy by improving the internal channel of the ball valve, designing an adjustable valve core shape, or increasing the wear resistance of the valve body and sealing surface. Some ball valves are also equipped with electronic control modules to achieve more accurate flow control through automation. In addition, modular design has become a development direction to improve regulation accuracy and facilitate maintenance, allowing different regulating components to be replaced according to working conditions.

[0004] However, existing technologies have some obvious defects. First, traditional ball valves have poor flow regulation accuracy under high flow rate or high pressure conditions, especially in media with many particulate impurities, which can easily cause blockage or valve wear, leading to unstable flow control. Second, the sealing surface of existing regulating ball valves wears quickly during frequent regulation, affecting the service life and sealing performance of the ball valve. In addition, some ball valve designs are complex, making it difficult to disassemble and maintain the internal regulating components, increasing maintenance costs and downtime during use. Most importantly, existing regulation methods lack sufficient dynamic regulation capability for fluid resistance, which cannot provide sufficient response when instantaneous load changes. SUMMARY

[0005] To address the problems of inaccurate flow regulation, large fluid resistance fluctuations, accelerated wear of valve body and sealing surface, noise and vibration during operation, poor work reliability, and inconvenient disassembly and maintenance of regulating components in existing ball valves, the present application provides a self-adaptive bidirectional flow resistance adjustable low-noise regulating ball valve to solve such problems.

[0006] To achieve the above object, the application provides a self-adaptive low-noise regulating ball valve with adjustable bidirectional flow resistance, which comprises a valve body, a valve ball arranged in the valve body in a limiting rotation mode, a fluid passage arranged in the valve ball in a penetrating mode, a first valve port and a second valve port arranged at two ends of the valve body respectively for inputting and discharging liquid, and an adjusting valve rod connected with the valve ball.

[0007] Further, the throttling disc plate comprises a first disc body, a throttling hole and a first outer tooth part; the diameter of the first disc body is matched with the diameter of the fluid passage; the throttling hole is arranged on the first disc body and is opened in a corresponding number and with a size adjusted according to the flow resistance value requirement; and the first outer tooth part is arranged on the outer periphery of the first disc body, the tooth specification and number of which are matched with the inner tooth groove arranged on the outer periphery of the fluid passage in an axial direction and are embedded in the inner tooth groove.

[0008] Further, the guide disc plate comprises a second disc body, a guide groove and a second outer tooth part; the diameter of the second disc body is matched with the diameter of the fluid passage; the guide groove comprises a guide hole and a guide plate, the guide hole is arranged on the second disc body in a penetrating mode, the center axis of which does not coincide with the center axis of the throttling hole, and liquid can be discharged through the guide hole; the guide plate is arranged on the outside of the guide hole in an inclined mode, and the guide hole and the guide plate form a groove structure; the discharged liquid is guided to flow along a set path; and the second outer tooth part is arranged on the outer periphery of the second disc body, the tooth specification and number of which are matched with the inner tooth groove and are embedded in the inner tooth groove.

[0009] Further, a plurality of groups of positioning grooves arranged in a ring mode are arranged on the outer periphery of the fluid passage in a spaced mode, a snap ring is arranged in the positioning groove in a mounting mode, and the snap ring axially limits and fixes the valve core assembly.

[0010] Further, a reset spring is arranged at the bottom of the snap ring, and the other end of the reset spring is fixedly connected with the groove bottom.

[0011] Further, a limiting rod is further arranged on the valve ball, which is parallel to the fluid passage and penetrates through the plurality of positioning grooves to limit the bottom of the snap ring, so as to prevent the snap ring from being retracted into the positioning groove.

[0012] Further, the angle between the guide plate and the guide hole is adjusted according to the required flow resistance value; the guide hole is selected from a round hole, a triangular hole, a rectangular hole, or a special-shaped hole; and the guide plate is selected from a triangular plate, a round plate, a rectangular plate, or a special-shaped plate.

[0013] Further, the valve ball limiting rotation is arranged in the valve body, which includes a ball, a fluid passage, and a connecting groove; the ball is matched with the spherical cavity of the valve body, and rotates in the horizontal direction of the valve body to control the on-off of the fluid; the fluid passage is a cylindrical cavity arranged on the ball in the horizontal direction, and the two ends thereof are respectively connected with the first valve port and the second valve port to provide a fluid flow passage; and the connecting groove is arranged on the top of the ball and is embeddedly connected with the adjusting valve rod.

[0014] Further, the valve body is further provided with a valve seat assembly arranged on both sides of the valve ball, which includes an O-shaped sealing ring for sealing the two sides of the valve ball to prevent the fluid from penetrating into the cavity of the valve body from the valve ball.

[0015] According to another aspect of the present application, a throttling adjustment method of a self-adaptive bidirectional flow resistance adjustable low-noise adjusting ball valve is also provided, which is realized by using the low-noise adjusting ball valve of any one of the above embodiments or a combination of multiple embodiments, and includes the following steps.

[0016] S100: installing the adjusting ball valve: ensuring that the angle and distance of the throttling disc and the guide disc are adjusted to the initial requirements, and ensuring that the fluid passage of the valve ball is smooth and foreign matters are not stuck;

[0017] S200: adjusting the flow resistance value: by adjusting the adjusting valve rod on the valve ball, the rotation angle of the valve ball is controlled, and the angle and distance of the throttling disc and the guide disc in the valve core assembly are changed, so as to adjust the path, speed and flow resistance of the fluid passing through the valve core assembly;

[0018] S300: fluid control and noise reduction adjustment: during the adjustment process, the fluid flows through the liquid spiral cavity formed by the throttling disc and the guide disc, and the structure can gradually reduce the speed of the fluid, thereby reducing the flow noise of the fluid;

[0019] S400: maintenance and replacement of the adjusting element: the valve core assembly is designed with a quick dismounting device, and when the throttling disc or the guide disc needs to be replaced, the quick dismounting and replacement of the adjusting element are realized through the design of the snap ring and the limiting rod arranged in the valve body.

[0020] S500: bidirectional flow resistance adjustment: by adjusting the rotation angle of the valve ball, the flow direction of the fluid passing through the valve body is changed, thereby realizing the bidirectional flow resistance adjustment, and the design of the throttling disc and the guide disc can ensure that the flow resistance control of the fluid in two directions is consistent, thereby meeting the requirements in different working conditions.

[0021] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0022] 1. The low-noise regulating ball valve of the present application, by arranging multiple sets of throttling discs and flow guide discs at intervals in the fluid passage of the valve ball, the pressure drop of the fluid medium is gradually reduced when passing through the valve core assembly, and the pressure drop of each stage is insufficient to cause cavitation, achieving multi-stage throttling noise reduction, and different flow resistance values can be achieved by different combinations of throttling discs and flow guide discs, realizing adjustable flow resistance under the premise of the same specification and model; at the same time, the throttling discs and flow guide discs can be replaced modularly, reducing the difficulty of maintenance.

[0023] 2. The low-noise regulating ball valve of the present application, adjacent throttling holes and flow guide grooves are not on the same axis, so that a liquid spiral cavity is formed between adjacent throttling discs and flow guide discs, thereby dissipating fluid energy; by controlling the fitting angle of the flow disc and the flow guide disc in the fluid passage, as well as the distance between them, the fluid flow and path are changed accordingly, achieving better throttling and flow resistance control, and filling the gap in the prior art where the valve flow resistance value cannot be changed.

[0024] 3. The low-noise regulating ball valve of the present application, by combining throttling discs and flow guide discs, both can be installed in forward and reverse directions in the fluid passage of the valve ball, achieving the function of bidirectional throttling regulation, filling the gap in the prior art where regulating valves have flow direction requirements for installation.

[0025] 4. The low-noise regulating ball valve of the present application, under the premise of the same specification and model, can provide different flow and pressure difference values of the throttling disc and flow guide disc combination, which can conveniently and quickly meet the needs of users for different valve resistance values, and the same specification and size can have more than 10 flow resistance limits to choose from.

[0026] 5. The low-noise regulating ball valve of the present application, the design of the spiral cavity between adjacent throttling discs and flow guide discs increases the throttling area under the premise of the same flow resistance value, reduces the flow rate of the medium, increases the back pressure at the throttling hole, greatly prolongs the service life of the valve, and in some states, can realize more than 10 years of work without obvious changes in flow resistance limit.

[0027] 6. The low-noise regulating ball valve of the present application, the valve core assembly and the fluid passage adopt a tooth-like structure for radial limiting, and the snap ring provided on the fluid passage allows users to quickly and conveniently adjust the staggered angle of the throttling disc 51 and the flow guide disc, as well as the distance between adjacent throttling discs and flow guide discs, thereby achieving adjustment and control of different flow resistance values.

[0028] 7. The low-noise regulating ball valve of the present application can quickly complete the installation of the valve core assembly by axially limiting the two sides of the valve core assembly through the snap ring with a reset function and locking and limiting the bottom of the snap ring through the limiting rod passing through multiple positioning grooves, and when disassembling, the locking and limiting of the snap ring is released by unscrewing and pulling out the limiting rod to quickly take out the valve core assembly from the fluid passage, thereby realizing the quick disassembly of the valve core assembly; the design of the snap ring and the limiting rod reduces the technical requirements for maintenance personnel and realizes the quick maintenance of the valve core assembly. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic diagram of a self-adaptive bidirectional flow resistance adjustable low-noise regulating ball valve according to an embodiment of the present application;

[0030] Figure 2 FIG. 2 is a three-dimensional structural schematic diagram of a low-noise regulating ball valve according to an embodiment of the present application;

[0031] Figure 3 FIG. 3 is an axial sectional view of a valve ball according to an embodiment of the present application;

[0032] Figure 4 FIG. 4 is a radial sectional view of a valve ball according to an embodiment of the present application;

[0033] Figure 5 FIG. 5 is a layout diagram of a valve core assembly in a fluid passage of a valve ball according to an embodiment of the present application;

[0034] Figure 6 FIG. 6 is a structural schematic diagram of a first throttling disc according to an embodiment of the present application;

[0035] Figure 7 FIG. 7 is a structural schematic diagram of a second throttling disc according to an embodiment of the present application;

[0036] Figure 8 FIG. 8 is a schematic diagram of spiral flow of liquid through a valve core assembly according to an embodiment of the present application;

[0037] Figure 9 FIG. 9 is a schematic diagram of a self-adaptive bidirectional flow resistance adjustable low-noise regulating method according to an embodiment of the present application.

[0038] In all the drawings, the same reference signs represent the same technical features, specifically: 1-valve body, 11-first valve port, 12-second valve port, 2-adjusting valve rod, 3-valve ball, 31-ball body, 32-fluid passage, 33-connection groove, 34-positioning groove, 35-inner tooth groove, 36-snap ring, 4-valve seat assembly, 5-valve core assembly, 51-throttling disc, 511-first disc body, 512-throttling hole, 513-first outer tooth part, 52-flow guide disc, 521-second disc body, 522-flow guide hole, 523-flow guide plate, 524-second outer tooth part. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0040] As shown in Figures 1-8 The present application provides a self-adaptive bidirectional flow resistance adjustable low noise regulating ball valve, which comprises a valve body 1, a regulating valve stem 2, a valve ball 3, a valve seat assembly 4 and a valve core assembly 5. The valve body 1 is provided with a first valve port 11 and a second valve port 12 at both ends respectively for inputting and discharging liquid. The valve ball 3 is a spherical structure and is rotationally limited in the valve body 1, and a fluid passage 32 is provided through the valve ball 3, which is in communication with the first valve port 11 and the second valve port 12 at both ends respectively for discharging liquid. The regulating valve stem 2 is connected with the valve ball 3 to adjust the horizontal rotation angle of the valve ball 3. The valve core assembly 5 is provided in the fluid passage 32 and comprises throttling disc plates 51 and flow guiding disc plates 52 which are arranged in parallel and at intervals. A plurality of flow guiding holes 522 are formed in the throttling disc plates 51, and flow guiding grooves are provided on the flow guiding disc plates 52. Adjacent flow guiding holes 522 and flow guiding grooves are not on the same axis. The regulating ball valve of the present application is provided with a plurality of groups of throttling disc plates 51 and flow guiding disc plates 52 arranged at intervals in the fluid passage 32. The fluid path formed by adjacent flow guiding holes 522 and flow guiding grooves forms a liquid spiral cavity. When the fluid medium passes through the valve core assembly 5, it flows along the spiral path, and the speed and direction of the fluid gradually change, and the pressure drop is gradually reduced, realizing multi-stage throttling and noise reduction. Different flow resistance values can be realized by different combinations of the valve core assembly 5, i.e. adjusting the spacing between the throttling disc plates 51 and the flow guiding disc plates 52, or the relative angle between adjacent flow guiding holes 522 and flow guiding grooves, realizing flow resistance adjustment under the premise of the same specification and model.

[0041] As shown in Figures 1-2 In the embodiment of the present application, the valve body 1 is a tubular structure, which comprises a first pipe body and a second pipe body. The first pipe body and the second pipe body are sealed and connected by flanges and are fastened together as a whole by bolts. The first valve port 11 is provided at the outer side end of the first pipe body, and the second valve port 12 is provided at the outer side end of the second pipe body. The first valve port 11 and the second valve port 12 are used for inputting and discharging liquid respectively. The rotation angle of the valve ball 3 is adjusted by the regulating valve stem 2, the throttling direction of the valve core assembly 3 is adjusted, and the liquid inlet and outlet directions of the first valve port 11 and the second valve port 12 are changed, realizing bidirectional flow resistance adjustment of the valve body 1.

[0042] The valve seat assembly 4 is arranged in the valve body 1 and located on both sides of the valve ball 3, which includes an O-shaped sealing ring for sealing the two sides of the valve ball 3 to prevent fluid from seeping into the cavity of the valve body 1 from the side of the valve ball 3. Further, the O-shaped sealing ring is preferably a fluoroether O-shaped ring, which can work in a temperature range of -40℃ to 300℃ for a long time.

[0043] As shown in Figures 3-4 The valve ball 3 is rotationally limited in the valve body 1, which includes a ball body 31, a fluid passage 32 and a connecting groove 33. The ball body 31 is adapted to the spherical cavity of the valve body 1 and can rotate in the horizontal direction of the valve body 1 to control the on-off of the fluid. The fluid passage 32 is a cylindrical cavity arranged through the ball body 31 in the horizontal direction, and the two ends thereof are respectively connected with the first valve port 11 and the second valve port 12 to provide a fluid flow passage. The connecting groove 33 is arranged on the top of the ball body 31 and is embeddedly connected with the adjusting valve rod 2. By twisting the adjusting valve rod 2, the ball body 31 is rotated to make the two ends of the fluid passage 32 misaligned or aligned with the first valve port 11 and the second valve port 12, respectively, to perform the on-off operation of the valve.

[0044] Further, a plurality of groups of positioning grooves 34 are arranged on the outer periphery of the fluid passage 32 in a ring shape, and a snap ring 36 is arranged in the positioning groove 34. By arranging the snap ring 36, the axial positioning of the valve core assembly 5 is realized. Preferably, in order to realize the quick installation and disassembly of the valve core assembly 5, a reset spring is arranged at the bottom of the snap ring 36, and the other end of the reset spring is fixedly connected with the groove bottom of the positioning groove 34. By pushing the valve core assembly 5 to displace along the fluid passage 32, the snap ring 36 is pushed into the positioning groove 34, and after reaching the installation point, the reset spring pushes the snap ring 36 out of the positioning groove 34 to axially limit the valve core assembly 5. Further, in order to prevent the high-pressure fluid in the fluid passage 32 from pushing the valve core assembly 5 to displace and compress the snap ring 36 to descend, thereby causing the snap ring 36 to lose the limiting effect, a limiting rod is further arranged on the ball body 31 and parallel to the fluid passage 32, and the limiting rod penetrates through a plurality of positioning grooves 34 to limit the bottom of the snap ring 36 and prevent the snap ring 36 from retracting into the positioning groove 34. After completing the positioning and installation of the valve core assembly 5, the reset spring pushes the snap ring 36 out of the positioning groove 34 to axially limit the valve core assembly 5, and the limiting rod is inserted into the ball body 31 to penetrate through a plurality of positioning grooves 34 and be screwed to limit and lock the bottom of the snap ring 36, which can effectively prevent the high-pressure fluid in the fluid passage 32 from pushing the valve core assembly 5 to displace and compress the snap ring 36 to descend. When performing the disassembly operation of the valve core assembly 5, the limiting rod can be unscrewed and pulled out to release the locking and limiting of the snap ring 36, and the valve core assembly 5 is pulled to compress the snap ring 36 to descend, thereby quickly taking out the valve core assembly 5 from the fluid passage 32 to perform the quick disassembly operation.

[0045] Further, to realize the adjustment of the installation angle of the valve core assembly 5, thereby realizing the change of the control flow resistance value, the outer periphery of the fluid passage 32 is provided with an inner tooth groove 35 in the axial direction, which is embedded with the valve core assembly 5, and the relative embedding angle of the throttling disc 51 and the flow guide disc 52 is adjusted, so that the relative angle of the adjacent throttling holes 512 and the flow guide grooves changes, the fluid path changes, and thus the speed and direction of the fluid gradually change, so as to realize the change of the control flow resistance value.

[0046] As shown in Figures 5-7 The valve core assembly 5 is fixedly arranged in the fluid passage 32 and includes a plurality of groups of throttling discs 51 and flow guide discs 52 arranged at intervals.

[0047] The throttling disc 51 is used to control the liquid inflow and includes a first disc body 11, throttling holes 512, and a first outer tooth portion 513. The first disc body 11 has a diameter matched with the diameter of the fluid passage 32. The throttling holes 512 are arranged on the first disc body 511 and have a number and a size adjusted according to the demand of the flow resistance value. The first outer tooth portion 513 is arranged on the outer periphery of the first disc body 511 and has a tooth specification and a number matched with the inner tooth groove 35, so as to be embedded in the inner tooth groove 35. During the installation of the throttling disc 51, the throttling disc 51 is rotated to the required installation angle according to the installation requirement, and the first outer tooth portion 513 is aligned with and embedded in the inner tooth groove 35. The throttling disc 51 is pushed into the fluid passage 32, and is limited in the radial direction by the inner tooth groove 35, so as to avoid the radial deflection during the displacement process. The throttling disc 51 is linearly displaced along the fluid passage 32 and can accurately reach the installation point for the next axial limiting and fixing work.

[0048] The flow guide disc 52 is used to adjust the fluid travel angle and path, which comprises a second disc body 521, a flow guide groove and a second outer tooth portion 524; the second disc body 521 is matched with the diameter of the fluid channel 32; the flow guide groove comprises a flow guide hole 522 and a flow guide plate 523, the flow guide hole 522 is provided through the second disc body 521, the center axis thereof is not coincided with the center axis of the adjacent throttling hole 512, and the liquid can be discharged through the flow guide hole 522; the flow guide plate 523 is provided on the outside of the flow guide hole 522 in an inclined manner, and the flow guide hole 522 and the flow guide plate 523 form a groove structure to guide the discharged liquid to flow along the set path; the second outer tooth portion 524 is provided on the outer periphery of the second disc body 521, and the tooth specification and number thereof are matched with the inner tooth groove 35, and the second outer tooth portion 524 can be embedded in the inner tooth groove 35. When the flow guide disc 52 is installed, according to the installation requirements, the flow guide disc 52 is rotated to adjust the installation angle to the required installation angle, and the second outer tooth portion 524 is aligned with and embedded in the inner tooth groove 35, and the flow guide disc 52 is pushed into the fluid channel 32, and under the radial limitation of the inner tooth groove 35, the radial deflection in the displacement process is avoided, the flow guide disc 52 is linearly displaced along the fluid channel 32, and can accurately reach the installation point to perform the next axial limiting and fixing work.

[0049] Preferably, the included angle between the flow guide plate 523 and the flow guide hole 522 can be adjusted according to the required flow resistance value; preferably, the flow guide hole 522 is selected from a round hole, a triangular hole, a rectangular hole or a special-shaped hole; preferably, the flow guide plate 523 is selected from a triangular plate, a circular plate, a rectangular plate or a special-shaped plate. The flow guide groove structure formed by the flow guide plate 523 and the flow guide hole 522 can control the travel path of the fluid, avoid the direct impact of high-pressure fluid on the valve assembly, and effectively reduce the noise and vibration that easily occur in the operation of the ball valve.

[0050] As shown in Figure 5 and Figure 8 , the valve core assembly 5 is provided in the fluid channel 32 of the valve ball 3, the throttling disc 51 and the flow guide disc 52 are arranged at intervals, and the relative angle of the throttling disc 51 and the flow guide disc 52 is adjusted, so that the fluid path formed by the adjacent throttling hole 512 and the flow guide groove forms a liquid spiral cavity. Since the installation angle and the axial distance of the adjacent throttling disc 51 and the flow guide disc 52 are adjustable, the flow resistance generated during throttling also changes, and the fluid channel 32 is relatively long, which creates conditions for setting more different flow resistance values in the fluid channel 32, so that the adjustable flow resistance value of the present application can reach 10 kinds or even higher.

[0051] The low-noise regulating ball valve of the application, by setting multiple groups of throttling disc plates 51 and flow guide disc plates 52 in the fluid passage 32 of the valve ball 3, the pressure drop of the fluid medium is gradually reduced when passing through the valve core assembly 5, the pressure drop of each stage is not enough to cause cavitation, multi-stage throttling noise reduction is realized, different flow resistance values can be realized by different combinations of the throttling disc plates 51 and the flow guide disc plates 52, and the flow resistance can be adjusted under the premise of the same specification and model; meanwhile, the throttling disc plates 51 and the flow guide disc plates 52 can be replaced in a modular manner, reducing the difficulty of maintenance.

[0052] The low-noise regulating ball valve of the application, adjacent throttling holes 512 and flow guide grooves are not on the same axis, so that the space between adjacent throttling disc plates 51 and flow guide disc plates 52 forms a liquid spiral cavity, thereby dissipating fluid energy; by controlling the fitting angle of the flow disc plates 51 and the flow guide disc plates 52 in the fluid passage 32 and the distance therebetween, the fluid flow and path are correspondingly changed, better throttling and flow resistance control are realized, and the blank in the prior art that the valve flow resistance value cannot be changed is filled.

[0053] The low-noise regulating ball valve of the application, by combining the throttling disc plates 51 and the flow guide disc plates 52, the two can be installed in forward and reverse directions at will in the fluid passage 32 of the valve ball 3, realizing the function of bidirectional throttling regulation, filling the blank in the prior art that the regulating valve has flow direction requirements for installation.

[0054] The low-noise regulating ball valve of the application, under the premise of the same specification and model, can provide combinations of throttling disc plates 51 and flow guide disc plates 52 with different flow and pressure difference values, which can conveniently and quickly meet the needs of users for different valve resistance values, and the same specification and size can have more than 10 flow resistance limit values to choose from.

[0055] The low-noise regulating ball valve of the application, the design of the spiral cavity between adjacent throttling disc plates 51 and flow guide disc plates 52 increases the throttling area under the premise of ensuring the same flow resistance value, reduces the flow rate of the medium, increases the back pressure at the throttling hole, greatly prolongs the regulating life of the valve, and in some states, can realize more than 10 years of work without obvious changes in the flow resistance limit value.

[0056] The low-noise regulating ball valve of the application, the valve core assembly 5 and the fluid passage 32 adopt a tooth-like structure for radial limiting, and the snap ring 36 provided on the fluid passage 32 facilitates the user to quickly and conveniently adjust the staggered angle of different throttling disc plates 51 and flow guide disc plates 52, and adjust the distance between adjacent throttling disc plates 51 and flow guide disc plates 52, to realize adjustment and control of different flow resistance values.

[0057] The low-noise adjusting ball valve of the application can quickly complete the installation of the valve core assembly 5 by limiting the two sides of the valve core assembly 5 in the axial direction through the snap ring 36 with a reset function and limiting and locking the bottom of the snap ring 36 through the limiting rod passing through the plurality of positioning grooves 34, and when disassembling, the locking and limiting of the snap ring 36 is released by unscrewing and pulling out the limiting rod to quickly take out the valve core assembly 5 from the fluid passage 32, so that the quick disassembly of the valve core assembly 5 is realized; the design of the snap ring 36 and the limiting rod reduces the technical requirements for the maintenance personnel and realizes the quick maintenance of the valve core assembly 5.

[0058] As shown in the drawings, Figure 9 In another embodiment of the application, a self-adaptive bidirectional flow resistance adjustable low-noise adjusting method is provided, which is realized based on the self-adaptive bidirectional flow resistance adjustable low-noise adjusting ball valve and includes the following steps:

[0059] S100: installing the adjusting ball valve: when installing the adjusting ball valve, it is necessary to ensure the correct installation of the valve body 1, the valve ball 3 and the valve core assembly 5. The valve body is connected by sealing through flanges of two pipe bodies to ensure the tight butt joint of the fluid input end and the discharge end. During the installation process, it is necessary to ensure that the angle and distance of the throttle disc 51 and the flow guide disc 52 are adjusted to the initial requirements, and it is necessary to ensure that the fluid passage 32 of the valve ball 3 is smooth to avoid foreign matter from being stuck;

[0060] S200: adjusting the flow resistance value: the rotation angle of the valve ball 3 is controlled by adjusting the adjusting valve rod 2 on the valve ball 3. At this time, the angle and distance of the throttle disc 51 and the flow guide disc 52 in the valve core assembly 5 will change, so as to adjust the path, speed and flow resistance of the fluid passing through the valve core assembly. The adjustment process can realize the change of different flow resistance values by selecting throttle discs and flow guide discs of different specifications. In actual operation, the rotation of the adjusting valve rod 2 will directly affect the relative position of the throttle hole 512 and the flow guide groove, so as to change the flow resistance;

[0061] S300: fluid control and noise reduction adjustment: during the adjustment process, the fluid flows through the liquid spiral cavity formed by the throttle disc 51 and the flow guide disc 52, and this structure can gradually reduce the speed of the fluid, so as to reduce the flow noise of the fluid. Due to the design of the spiral cavity, the pressure drop of the fluid is gradually reduced, so as to avoid the occurrence of cavitation phenomenon, thereby effectively reducing the working noise and vibration. Users can accurately control the flow direction and speed of the liquid by adjusting the disc structure in the valve core assembly 5 according to actual needs;

[0062] S400: Maintenance and replacement of adjusting elements: In order to facilitate maintenance and repair, the valve core assembly 5 is designed with quick disassembly device. When the throttle disc 51 or the flow guide disc 52 needs to be replaced, the quick disassembly and replacement of adjusting elements can be realized through the design of the snap ring 36 and the limiting rod set in the valve body 1. In specific operation, loosen the limiting rod, release the snap ring 36, and easily extract the valve core assembly 5 for replacement. This design effectively reduces the difficulty of maintenance and can reduce downtime;

[0063] S500: Two-way flow resistance adjustment: The regulating ball valve has the function of two-way flow resistance adjustment. By adjusting the rotation angle of the valve ball 3, the flow direction of the fluid through the valve body can be changed, thereby realizing two-way flow resistance adjustment. In this process, the design of the throttle disc 51 and the flow guide disc 52 can ensure consistent flow resistance control in both directions, meeting the needs of different working conditions.

[0064] The adjusting method of the present application ensures stable operation in high-pressure, high-flow rate and particle impurity fluid environments. The modular design of the throttle disc 51 and the flow guide disc 52 not only improves the accuracy of flow regulation, but also prolongs the service life of the valve. By reasonably adjusting the distance and angle, the valve can maintain stable operation for a long time without affecting the flow resistance value, avoiding performance degradation due to high flow rate or wear.

[0065] Those skilled in the art will readily understand that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A self-adapting bi-directional flow resistance adjustable low noise regulating ball valve, characterized in that, The utility model relates to a valve, which comprises: a valve body (1) having a first valve port (11) and a second valve port (12) at two ends thereof for inputting and discharging liquid; a valve ball (3) rotatably arranged in the valve body (1) and having a fluid passage (32) penetrating therethrough, the fluid passage (32) being in communication with the first valve port (11) and the second valve port (12) respectively for discharging liquid; an adjusting valve rod (2) connected with the valve ball (3) for adjusting the horizontal rotation angle of the valve ball (3) a valve core assembly (5) arranged in the fluid passage (32), which comprises a throttling disc (51) and a flow guide disc (52) arranged in parallel and spaced apart, the throttling disc (51) having a plurality of flow guide holes (522) formed thereon, and the flow guide disc (52) having a flow guide groove formed thereon, adjacent flow guide holes (522) and the flow guide groove being not on the same axis; the throttling disc (51) comprises a first disc body (511), a throttling hole (512) and a first outer tooth portion (513), the first disc body (511) having a diameter matched with that of the fluid passage (32), the throttling hole (512) being arranged on the first disc body (511) and having a number and a size adjusted according to the flow resistance value, and the first outer tooth portion (513) being arranged on the outer periphery of the first disc body (511) and having a size and a number matched with those of the inner tooth groove (35) arranged on the outer periphery of the fluid passage (32) in the axial direction and being embedded in the inner tooth groove (35); the flow guide disc (52) comprises a second disc body (521), a flow guide groove and a second outer tooth portion (524), the second disc body (521) having a diameter matched with that of the fluid passage (32), the flow guide groove comprising a flow guide hole (522) and a flow guide plate (523), the flow guide hole (522) being penetratingly arranged on the second disc body (521) and having a center axis not coinciding with that of the adjacent throttling hole (512), and liquid being discharged through the flow guide hole (522), the flow guide plate (523) being obliquely arranged on the outer side of the flow guide hole (522) and forming a groove structure together with the flow guide hole (522), and guiding the discharged liquid to flow along a set path, and the second outer tooth portion (524) being arranged on the outer periphery of the second disc body (521) and having a size and a number matched with those of the inner tooth groove (35) and being embedded in the inner tooth groove (35); a liquid spiral cavity is formed by the fluid path constituted by the adjacent flow guide hole (522) and the flow guide groove, the fluid medium flows along a spiral path when passing through the valve core assembly (5), the speed and direction of the fluid gradually change, the pressure drop is gradually reduced, and multi-stage throttling and noise reduction are realized.

2. A self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that, a plurality of groups of positioning grooves (34) are arranged on the outer periphery of the fluid passage (32) in a ring shape and spaced apart, a snap ring (36) is arranged in the positioning groove (34), and the snap ring (36) axially limits and fixes the valve core assembly (5).

3. A self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 2, characterized in that, the snap ring (36) is provided with a reset spring, and the other end of the reset spring is fixedly connected with the groove bottom of the positioning groove (34).

4. The self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 3, characterized in that, The valve ball (3) is further provided with a limiting rod which is parallel to the fluid passage (32) and penetrates through the plurality of positioning grooves (34) to limit the bottom of the snap ring (36) and prevent the snap ring (36) from retracting into the positioning groove (34).

5. The self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that, The included angle between the flow guide plate (523) and the flow guide hole (522) is adjusted according to the required flow resistance value; the flow guide hole (522) is selected from a circular hole, a triangular hole, a rectangular hole or a special-shaped hole; and the flow guide plate (523) is selected from a triangular plate, a circular plate, a rectangular plate or a special-shaped plate.

6. The self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that, The valve ball (3) is rotationally limited in the valve body (1) and includes a spherical body (31), a fluid passage (32) and a connecting groove (33). The spherical body (31) is matched with the spherical cavity of the valve body (1) and is horizontally rotated in the valve body (1) to control the on-off of fluid. The fluid passage (32) is a cylindrical cavity which is provided on the spherical body (31) in the horizontal direction and is in abutment with the first valve port (11) and the second valve port (12) at two ends, thereby providing a fluid flow passage. The connecting groove (33) is provided on the top of the spherical body (31) and is embeddedly connected with the adjusting valve rod (2).

7. The self-adapting bi-directional flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that, The valve body (1) is further provided with a valve seat assembly (4) which is located on both sides of the valve ball (3) and includes an O-shaped sealing ring which seals the two sides of the valve ball (3) to prevent fluid from penetrating into the cavity of the valve body (1) from the valve ball (3).

8. A throttling method of a self-adapting bidirectional flow resistance adjustable low noise regulating ball valve, characterized in that, The low-noise adjusting ball valve is realized by using any one of claims 1-7, comprising: S100: installing the adjusting ball valve: ensuring that the angle and distance of the throttling disc (51) and the flow guide disc (52) are adjusted to the initial requirements, and ensuring that the fluid passage (32) of the valve ball (3) is smooth and foreign matters are not stuck; S200: adjusting the flow resistance value: by adjusting the adjusting valve rod (2) on the valve ball (3), the rotation angle of the valve ball (3) is controlled, and the angle and distance of the throttling disc (51) and the flow guide disc (52) in the valve core assembly (5) are changed, thereby adjusting the path, speed and flow resistance of the fluid passing through the valve core assembly; S300: fluid control and noise reduction adjustment: during the adjustment process, the fluid flows through the liquid spiral cavity formed by the throttling disc (51) and the flow guide disc (52) to gradually reduce the speed of the fluid, thereby reducing the flow noise of the fluid; S400: maintenance and replacement of adjusting elements: the valve core assembly (5) is designed with a quick dismounting device, when the throttling disc (51) or the flow guide disc (52) needs to be replaced, the quick dismounting and replacement of the adjusting elements are realized through the design of the snap ring (36) and the limiting rod provided in the valve body (1); S500: two-way flow resistance adjustment: by adjusting the rotation angle of the valve ball (3), the flow direction of the fluid passing through the valve body is changed, thereby realizing two-way flow resistance adjustment.

Images