Self-adaptive bidirectional flow resistance adjustable low-noise adjusting ball valve and method

Abstract

The invention discloses a self-adaptive bidirectional flow resistance adjustable low-noise adjusting ball valve and method. The ball valve comprises a valve body, an adjusting valve rod, a valve ball, a valve seat assembly and a valve element assembly. A first valve port and a second valve port are formed in the two ends of the valve body respectively and used for inputting and discharging liquid. The valve ball is rotationally arranged in the valve body in a limited mode, and a fluid channel penetrates through the valve ball. The valve element assembly is arranged in the fluid channel and comprises a throttling disc and a flow guide disc, flow guide holes are formed in the throttling disc, flow guide grooves are formed in the flow guide disc, and the adjacent flow guide holes and flow guide grooves are not located on the same axis. According to the adjusting ball valve, the fluid paths formed by the adjacent flow guide holes and flow guide grooves form the liquid spiral cavities, fluid media flow along the spiral paths when passing through the valve element assembly, the speed and direction of the fluid are gradually changed, pressure drop is gradually reduced, multi-stage throttling noise reduction is achieved, and noise reduction is achieved. And different flow resistance values can be realized through different combinations of the valve core components, so that the flow resistance can be adjusted on the premise of the same specification and model.

Description

Technical Field

[0001] The present invention belongs to the technical field of regulating valve devices, and more specifically, relates to a self-adaptive bidirectional flow resistance adjustable low-noise regulating ball valve and a method. Background Art

[0002] In fluid control systems, ball valves are widely used due to their simple structure, convenient operation, good sealing performance, etc. 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 fluctuations in fluid resistance, increased wear of the valve body and sealing surface, easy occurrence of noise and vibration during operation, poor working reliability, and inconvenient disassembly and maintenance of the regulating components.

[0003] At present, most of the research on regulating ball valves focuses on its structural optimization, material selection and improvement of control methods. The existing technology mainly improves the 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 the 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, and different regulating elements can be replaced according to working conditions.

[0004] However, the prior art has some obvious defects. First, the flow regulation accuracy of traditional ball valves is poor under high flow rate or high pressure environments, especially in media with more particulate impurities, which is prone to blockage or valve wear, resulting in unstable flow control. Secondly, the sealing surface of the existing regulating ball valve wears faster during frequent adjustments, affecting the service life and sealing performance of the ball valve. In addition, the design of some ball valves is relatively complex, and the internal adjustment components are difficult to disassemble and maintain, which increases the maintenance cost and downtime during use. Most importantly, the existing adjustment method has insufficient dynamic adjustment capabilities for fluid resistance and cannot provide sufficient response to instantaneous load changes. Summary of the invention

[0005] In view of the problems existing in the ball valve of the prior art, such as inaccurate flow regulation, large fluctuation of fluid resistance, increased wear of the valve body and sealing surface, easy occurrence of noise and vibration during operation, poor working reliability, and inconvenient disassembly and maintenance of the regulating components, the present invention provides an adaptive bidirectional flow resistance adjustable low-noise regulating ball valve to solve such problems.

[0006] To achieve the above-mentioned purpose, the present invention provides an adaptive two-way flow resistance adjustable low-noise regulating ball valve, comprising a valve body, a first valve port and a second valve port are respectively provided at two ends thereof for inputting and discharging liquid; a valve ball which is limitedly rotated and arranged in the valve body, and a fluid channel is penetrated therein, and the two ends of the fluid channel are respectively connected with the first valve port and the second valve port for outputting liquid; a regulating valve stem is connected to the valve ball, and the horizontal rotation angle of the regulating valve ball is arranged in the valve core assembly in the fluid channel, which comprises a throttling disc and a guide disc which are arranged in parallel and at intervals, a plurality of guide holes are opened on the throttling disc, and a guide groove is provided on the guide disc, and adjacent guide holes and guide grooves are not on the same axis; a liquid spiral cavity is formed by the fluid path formed by adjacent guide holes and guide grooves, and the fluid medium flows along the spiral path when passing through the valve core assembly, and the speed and direction of the fluid gradually change, and the pressure drop is reduced step by step, thereby realizing multi-stage throttling and noise reduction.

[0007] Furthermore, the throttling disc includes a first disc body, a throttling hole and a first external tooth portion; the diameter of the first disc body is adapted to the diameter of the fluid channel; the throttling hole is arranged on the first disc body, and a corresponding number of the holes are opened and the size of the holes is adjusted according to the flow resistance value requirements; the first external tooth portion is arranged on the outer periphery of the first disc body, and the gear specifications and number thereof are adapted to the internal tooth grooves axially arranged on the outer periphery of the fluid channel, and are embedded in the internal tooth grooves.

[0008] Furthermore, the guide disc includes a second disc body, a guide groove and a second outer tooth portion; the diameter of the second disc body is adapted to the diameter of the fluid channel; the guide groove includes a guide hole and a guide plate, the guide hole is through-through arranged on the second disc body, and its central axis does not coincide with the central axis of the throttling hole, and the liquid can be discharged through the guide hole; the guide plate is obliquely arranged on the outside of the guide hole, and the two form a groove-like structure; the discharged liquid is guided so that the fluid flows along the set path; the second outer tooth portion is arranged on the outer periphery of the second disc body, and its gear tooth specifications and quantity are adapted to the internal tooth groove, and it is embedded in the internal tooth groove.

[0009] Furthermore, a plurality of groups of circumferentially arranged positioning grooves are provided at intervals on the outer circumference of the fluid channel, and a clamping ring is installed in the positioning groove, and the clamping ring is used to axially limit and fix the valve core assembly.

[0010] Furthermore, a return spring is provided at the bottom of the clamping ring, and the other end of the return spring is fixedly connected to the bottom of the positioning groove.

[0011] Furthermore, a limiting rod is provided on the valve ball, which is parallel to the fluid channel and penetrates through a plurality of positioning grooves to limit the bottom of the clamping ring and prevent the clamping ring from retracting into the positioning groove.

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

[0013] Furthermore, the valve ball is limitedly rotated and arranged in the valve body, and it includes a sphere, a fluid channel and a connecting groove; the sphere is adapted to the spherical cavity of the valve body, and it rotates horizontally in the valve body to control the flow of the fluid; the fluid channel is a cylindrical cavity, which is horizontally penetrated on the sphere, and its two ends are respectively connected to the first valve port and the second valve port, thereby providing a fluid flow channel; the connecting groove is arranged at the top of the sphere, and it is engaged and connected with the regulating valve stem.

[0014] Furthermore, a valve seat assembly is provided in the valve body, which is located on both sides of the valve ball and includes an O-ring. The O-ring seals both sides of the valve ball to prevent the fluid from penetrating into the valve body cavity from the valve ball cost.

[0015] According to another aspect of the present invention, a throttling adjustment method for a low-noise regulating ball valve with an adaptive two-way flow resistance and adjustable flow resistance is provided, which is implemented by using a low-noise regulating ball valve according to any one of the above embodiments or a combination of multiple embodiments, and includes:

[0016] S100: Install the regulating ball valve: ensure that the angle and distance of the throttling disc and the guide disc are adjusted to the initial requirements, and ensure that the fluid passage of the valve ball is smooth to avoid foreign matter getting stuck;

[0017] S200: Adjust the flow resistance value: By adjusting the regulating stem on the valve ball to control the rotation angle of the valve ball, the angle and spacing between the throttling disc and the guide disc in the valve core assembly will change, thereby adjusting the path, speed and flow resistance of the fluid passing through the valve core assembly;

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

[0019] S400: Maintenance and replacement of regulating elements: The valve core assembly is designed with a quick disassembly device. When the throttling disc or guide disc needs to be replaced, the regulating element can be quickly disassembled and replaced through the design of the clamping ring and the limit rod set 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 through the valve body is changed, thereby achieving bidirectional flow resistance adjustment. The design of the throttling disc and the guide disc can ensure consistent flow resistance control of the fluid in both directions to meet the needs of different working conditions.

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

[0022] 1. The low-noise regulating ball valve of the present invention arranges multiple groups of throttling discs and guide discs arranged at intervals in the fluid channel of the valve ball, so that the pressure drop of the fluid medium is reduced step by step when passing through the valve core assembly. The pressure drop of each stage is not enough to produce cavitation, thereby realizing multi-stage throttling noise reduction, and different flow resistance values ​​can be achieved through different combinations of throttling discs and guide discs, thereby realizing adjustable flow resistance under the premise of the same specification and model; at the same time, the throttling disc and guide disc can be replaced modularly, reducing the difficulty of maintenance.

[0023] 2. In the low-noise regulating ball valve of the present invention, adjacent throttling holes and guide grooves are not on the same axis, so that the space between adjacent throttling discs and guide discs forms a liquid spiral cavity, thereby dissipating fluid energy; by controlling the fitting angles of the flow disc and the guide disc in the fluid channel, as well as the spacing between the two, 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 invention, through the combination of the throttling disc and the guide disc, can be installed in the fluid channel of the valve ball in the forward and reverse directions at will, thus realizing the function of bidirectional throttling regulation, filling the gap in the prior art that regulating valves all have flow direction requirements for installation.

[0025] 4. The low-noise regulating ball valve of the present invention can provide throttling disc and guide disc combinations with different flow and pressure difference values ​​under the premise of the same specifications and models, which can conveniently and quickly meet the needs of users with different valve resistance values. The same specification and size can have more than 10 flow resistance limit values ​​to choose from.

[0026] 5. The low-noise regulating ball valve of the present invention has a spiral cavity design between adjacent throttling discs and guide discs, which increases the throttling area, reduces the flow velocity of the medium, increases the back pressure at the throttling hole, and greatly extends the regulating life of the valve. Under certain conditions, it can work for more than 10 years without obvious changes in the flow resistance limit.

[0027] 6. In the low-noise regulating ball valve of the present invention, the valve core assembly and the fluid channel are radially limited by mutually interlocking tooth structures, and the retaining ring provided in the fluid channel allows the user to quickly and conveniently adjust the staggered angle of the throttling disc 51 and the guide disc, as well as adjust the distance between adjacent throttling discs and guide discs, thereby achieving adjustment control of different flow resistance values.

[0028] 7. The low-noise regulating ball valve of the present invention axially limits the two sides of the valve core assembly by providing a retaining ring with a reset function, and limits and locks the bottom of the retaining ring by passing a limit rod through multiple positioning grooves, so that the installation of the valve core assembly can be completed quickly. When disassembling, the limit rod is loosened and pulled out to release the locking limit of the retaining ring, and the valve core assembly can be quickly taken out of the fluid channel, thereby realizing the quick disassembly of the valve core assembly; the design of the retaining ring and the limit rod reduces the technical requirements for maintenance personnel and realizes the rapid maintenance of the valve core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a self-adaptive bidirectional flow resistance adjustable low-noise regulating ball valve in an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of a low-noise regulating ball valve in an embodiment of the present invention;

[0031] Figure 3 An axial cross-sectional view of a valve ball in an embodiment of the present invention;

[0032] Figure 4 is a radial cross-sectional view of a valve ball in an embodiment of the present invention;

[0033] Figure 5 A layout diagram of the valve core assembly in the fluid passage of the valve ball in an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of a first throttling disc in an embodiment of the present invention;

[0035] Figure 7 is a schematic structural diagram of a second throttling disc in an embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the spiral flow of liquid passing through the valve core assembly in an embodiment of the present invention;

[0037] Fig. 9 Schematic diagram of a low-noise adjustment method with adaptive bidirectional adjustable flow resistance in an embodiment of the present invention.

[0038] In all the drawings, the same figure marks represent the same technical features, specifically: 1-valve body, 11-first valve port, 12-second valve port, 2-adjusting valve stem, 3-valve ball, 31-ball, 32-fluid channel, 33-connecting groove, 34-positioning groove, 35-internal tooth groove, 36-clamping ring, 4-valve seat assembly, 5-valve core assembly, 51-throttling disc, 511-first disc, 512-throttling hole, 513-first outer tooth portion, 52-guide disc, 521-second disc, 522-guide hole, 523-guide plate, 524-second outer tooth portion. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] like Figure 1-8 As shown, the present invention provides an adaptive two-way flow resistance adjustable low-noise regulating ball valve, comprising 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 thereof, respectively, for inputting and discharging liquid; the valve ball 3 is a spherical structure, which is limitedly rotated in the valve body 1, and a fluid channel 32 is penetrated therein, and the two ends of the fluid channel 32 are respectively connected with the first valve port 11 and the second valve port 12, for outputting liquid; the regulating valve stem 2 is connected to the valve ball 3, and the horizontal rotation angle of the valve ball 3 is adjusted; the valve core assembly 5 is arranged in the fluid channel 32, and comprises a throttling disc 51 and a guide disc 52 arranged in parallel and at intervals, and the throttling disc 51 is provided with a plurality of guide holes 522, and the guide disc 52 is provided with a guide groove, and the adjacent guide holes 522 and the guide groove are not on the same axis. The regulating ball valve of the present invention has multiple groups of throttling discs 51 and guide discs 52 arranged at intervals in the fluid channel 32. The fluid path formed by adjacent guide holes 522 and guide 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 reduced step by step, thereby realizing multi-stage throttling noise reduction. Different flow resistance values ​​can be achieved through different combinations of the valve core assembly 5, that is, adjusting the spacing between the throttling disc 51 and the guide disc 52, or the relative angle between adjacent guide holes 522 and guide grooves, thereby realizing adjustable flow resistance under the premise of the same specifications and models.

[0041] like Figure 1-2 As shown, in the embodiment of the present invention, the valve body 1 is a tubular structure, including a first tube body and a second tube body, the first tube body and the second tube body are sealed and connected by a flange, and are fastened together by bolts; the outer end of the first tube body is a first valve port 11, and the outer end of the second tube body is a second valve port 12; the first valve port 11 and the second valve port 12 are respectively used for inputting and discharging liquid, and the rotation angle of the valve ball 3 is adjusted by adjusting the valve stem 2, so that the valve core assembly 3 adjusts the throttling direction, thereby changing the liquid inlet and outlet directions of the first valve port 11 and the second valve port 12, thereby realizing the adjustable bidirectional flow resistance of the valve body 1.

[0042] The valve seat assembly 4 is arranged in the valve body 1, on both sides of the valve ball 3, and includes an O-ring, which seals both sides of the valve ball 3 to prevent the fluid from penetrating into the cavity of the valve body 1 from the side of the valve ball 3. Further, the O-ring is preferably a fluoroether O-ring, and its long-term working temperature range can be between -40°C and 300°C.

[0043] like Figure 3-4 As shown, the valve ball 3 is limitedly rotated and arranged in the valve body 1, and includes a sphere 31, a fluid channel 32 and a connecting groove 33. Among them, the sphere 31 is adapted to the spherical cavity of the valve body 1, and can be rotated in the horizontal direction of the valve body 1 to control the on and off of the fluid. The fluid channel 32 is a cylindrical cavity, which is arranged on the sphere 31 in the horizontal direction, and its two ends are respectively connected with the first valve port 11 and the second valve port 12, so as to provide a fluid flow channel. The connecting groove 33 is arranged at the top of the sphere 31, which is engaged and connected with the regulating valve stem 2. By twisting the regulating valve stem 2, the sphere 31 is driven to rotate, so that the two ends of the fluid channel 32 are staggered or connected with the first valve port 11 and the second valve port 12 respectively, and the valve is turned on and off.

[0044] Furthermore, multiple groups of circumferentially arranged positioning grooves 34 are provided at intervals on the outer circumference of the fluid channel 32, and a snap ring 36 is installed in the positioning groove 34. The snap ring 36 is provided to achieve axial positioning of the valve core assembly 5. Preferably, in order to achieve rapid installation and disassembly of the valve core assembly 5, a return spring is provided at the bottom of the snap ring 36, and the other end of the return spring is fixedly connected to the bottom of the positioning groove 34. By pushing the valve core assembly 5 to move along the fluid channel 32, the snap ring 36 is pushed into the positioning groove 34. After reaching the installation point, the return spring pushes the snap ring 36 out of the positioning groove 34 to axially limit the two sides of the valve core assembly 5; further, in order to prevent the high-pressure fluid in the fluid channel 32 from pushing the valve core assembly 5 to move and press the snap ring 36 to fall, thereby causing the snap ring 36 to lose its limiting function, a limit rod is also provided on the sphere 31, which is parallel to the fluid channel 32 and passes through multiple positioning grooves 34 to press the bottom of the snap ring 36. The retaining ring 36 is limited to prevent it from retracting into the positioning groove 34; after the positioning and installation of the valve core assembly 5 is completed, the return spring pushes the retaining ring 36 out of the positioning groove 34, axially limits the valve core assembly 5 on both sides, and the limiting rod is inserted into the sphere 31, so that it passes through multiple positioning grooves 34 and is tightened, and the bottom of the retaining ring 36 is limited and locked, which can effectively prevent the high-pressure fluid in the fluid channel 32 from pushing the valve core assembly 5 to move and compress the retaining ring 36 to descend; when disassembling the valve core assembly 5, the limiting rod can be loosened and pulled out to release the locking limit of the retaining ring 36, and the valve core assembly 5 is pulled to compress the retaining ring 36 to descend, so that the valve core assembly 5 can be quickly removed from the fluid channel 32 for quick disassembly.

[0045] Furthermore, in order to adjust the installation angle of the valve core assembly 5 and thus realize the change of the control flow resistance value, the fluid channel 32 is provided with an internal tooth groove 35 along the axial direction on the outer periphery, which is engaged with the valve core assembly 5 through the internal tooth groove 35, and the relative engagement angle of the throttling disc 51 and the guide disc 52 is adjusted to change the relative angle of adjacent throttling holes 512 and guide grooves, so as to change the fluid path, thereby gradually changing the speed and direction of the fluid, so as to achieve the change of the control flow resistance value.

[0046] like Figure 5-7 As shown, the valve core assembly 5 is fixedly disposed in the fluid channel 32 , and includes a plurality of groups of throttling discs 51 and guide discs 52 that are spaced apart.

[0047] The throttling disc 51 is used to control the amount of liquid flowing in, and includes a first disc body 11, a throttling hole 512 and a first outer tooth portion 513. The diameter of the first disc body 11 is adapted to the diameter of the fluid channel 32; the throttling hole 512 is provided on the first disc body 511, and the corresponding number of holes 512 is provided and the size of the hole diameter is adjusted according to the flow resistance value requirement; the first outer tooth portion 513 is provided on the outer periphery of the first disc body 511, and the gear specification and number of the first outer tooth portion 513 are adapted to the inner tooth groove 35, and can be embedded in the inner tooth groove 35. When installing the throttle disc 51, according to the installation requirements, the throttle disc 51 is rotated to adjust it to the required installation angle, and the first outer tooth portion 513 is aligned and engaged with the inner tooth groove 35, and the throttle disc 51 is pushed into the fluid channel 32. Under the radial limitation of the inner tooth groove 35, radial deflection is avoided during the displacement process, so that the throttle disc 51 is displaced in a straight line along the fluid channel 32 and can accurately reach the installation point for the next step of axial limitation and fixing.

[0048] The guide disc 52 is used to adjust the fluid travel angle and path, and includes a second disc body 521, a guide groove and a second outer tooth portion 524; the diameter of the second disc body 521 is adapted to the diameter of the fluid channel 32; the guide groove includes a guide hole 522 and a guide plate 523, the guide hole 522 is through-set on the second disc body 521, and its central axis does not coincide with the central axis of the adjacent throttling hole 512, and the liquid can be discharged through the guide hole 522; the guide plate 523 is obliquely arranged on the outside of the guide hole 522, and the two form a groove-like structure to guide the discharged liquid so that the fluid flows along the set path; the second outer tooth portion 524 is arranged on the outer periphery of the second disc body 521, and its gear tooth specifications and quantity are adapted to the internal tooth groove 35, and can be embedded in the internal tooth groove 35. When installing the guide disc 52, according to the installation requirements, the guide disc 52 is rotated to adjust it to the required installation angle, and the second outer tooth portion 524 is aligned and engaged with the inner tooth groove 35, and the guide disc 52 is pushed into the fluid channel 32. Under the radial limitation of the inner tooth groove 35, radial deflection is avoided during the displacement process, so that the guide disc 52 can be displaced in a straight line along the fluid channel 32 and can accurately reach the installation point for the next step of axial limitation and fixation.

[0049] Preferably, the angle between the guide plate 523 and the guide hole 522 can be adjusted according to the required flow resistance value; preferably, the guide hole 522 is a circular hole, a triangular hole, a rectangular hole or a special-shaped hole; preferably, the guide plate 523 is a triangular plate, a circular plate, a rectangular plate or a special-shaped plate. The guide plate 523 and the guide hole 522 form a guide groove structure, which can regulate the flow path of the fluid, avoid the direct impact of the high-pressure fluid on the valve assembly, and effectively reduce the noise and vibration that are easy to occur during the operation of the ball valve.

[0050] like Figure 5 and Figure 8 As shown, by providing a valve core assembly 5 in the fluid channel 32 of the valve ball 3, arranging the throttling disc 51 and the guide disc 52 at intervals, and adjusting the relative angles of the throttling disc 51 and the guide disc 52, the fluid path formed by adjacent throttling holes 512 and the guide groove forms a liquid spiral cavity. Since the installation angles and axial distances of adjacent throttling discs 51 and guide discs 52 are adjustable, the flow resistance generated during throttling also changes accordingly, and the fluid channel 32 is longer, 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 invention reaches 10 or even higher.

[0051] The low-noise regulating ball valve of the present invention arranges multiple groups of throttling discs 51 and guide discs 52 arranged at intervals in the fluid channel 32 of the valve ball 3, so that the pressure drop of the fluid medium is reduced step by step when passing through the valve core assembly 5. The pressure drop of each stage is not enough to produce cavitation, thereby realizing multi-stage throttling noise reduction, and different flow resistance values ​​can be achieved through different combinations of throttling discs 51 and guide discs 52, thereby realizing adjustable flow resistance under the premise of the same specifications and models; at the same time, the throttling discs 51 and guide discs 52 can be replaced in a modular manner, thereby reducing the difficulty of maintenance.

[0052] In the low-noise regulating ball valve of the present invention, adjacent throttling holes 512 and guide grooves are not on the same axis, so that the space between adjacent throttling discs 51 and guide discs 52 forms a liquid spiral cavity, thereby dissipating fluid energy; by controlling the engagement angles of the flow discs 51 and the guide discs 52 in the fluid channel 32, respectively, and the spacing between the two, the fluid flow rate and path are changed accordingly, thereby achieving better throttling and flow resistance control, and completing the gap in the prior art where the valve flow resistance value cannot be changed.

[0053] The low-noise regulating ball valve of the present invention is a combination of a throttling disc 51 and a guide disc 52, both of which can be installed in the fluid channel 32 of the valve ball 3 in either direction, thereby realizing the function of bidirectional throttling regulation, filling the gap in the prior art that regulating valves all have flow direction requirements for installation.

[0054] The low-noise regulating ball valve of the present invention can provide a combination of throttling discs 51 and guide discs 52 with different flow rates and pressure difference values ​​under the premise of the same specifications and models, which can conveniently and quickly meet the needs of users with different valve resistance values. 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 present invention is designed with a spiral cavity between adjacent throttling discs 51 and guide discs 52. This increases the throttling area, reduces the flow velocity of the medium, increases the back pressure at the throttling hole, and greatly extends the regulating life of the valve. Under certain conditions, the valve can work for more than 10 years without a significant change in the flow resistance limit.

[0056] In the low-noise regulating ball valve of the present invention, the valve core assembly 5 and the fluid channel 32 are radially limited by mutually interlocking tooth structures, and the retaining ring 36 provided in the fluid channel 32 allows the user to quickly and conveniently adjust the staggered angles of different throttling discs 51 and guide discs 52, as well as adjust the distance between adjacent throttling discs 51 and guide discs 52, to achieve adjustment control of different flow resistance values.

[0057] The low-noise regulating ball valve of the present invention is provided with a retaining ring 36 with a reset function to axially limit the two sides of the valve core assembly 5, and the limiting rod passes through multiple positioning grooves 34 to limit and lock the bottom of the retaining ring 36, so that the installation of the valve core assembly 5 can be quickly completed. When disassembling, the limiting rod is loosened and pulled out to release the locking limit of the retaining ring 36, and the valve core assembly 5 can be quickly taken out from the fluid channel 32, thereby realizing the quick disassembly operation of the valve core assembly 5; the design of the retaining ring 36 and the limiting rod reduces the technical requirements for maintenance personnel and realizes the rapid maintenance of the valve core assembly 5.

[0058] like Fig. 9 As shown, in another embodiment of the present invention, an adaptive two-way flow resistance adjustable low noise regulating method is provided, which is implemented based on the above-mentioned adaptive two-way flow resistance adjustable low noise regulating ball valve, and includes the following steps:

[0059] S100: Install the regulating ball valve: When installing the regulating ball valve, it is necessary to ensure that the valve body 1, valve ball 3 and valve core assembly 5 are correctly installed. The valve body is connected by two pipe bodies through flange sealing to ensure that the fluid input end and the discharge end are tightly connected. During the installation process, it is necessary to ensure that the angle and distance of the throttling disc 51 and the guide disc 52 are adjusted to the initial requirements, and ensure that the fluid channel 32 of the valve ball 3 is smooth to avoid foreign matter getting stuck;

[0060] S200: Adjust the flow resistance value: Control the rotation angle of the valve ball 3 by adjusting the regulating valve stem 2 on the valve ball 3. At this time, the angle and spacing between the throttling disc 51 and the guide disc 52 in the valve core assembly 5 will change, thereby adjusting the path, speed and flow resistance of the fluid passing through the valve core assembly. The adjustment process can achieve changes in different flow resistance values ​​by selecting throttling discs and guide discs of different specifications. In actual operation, the rotation of the regulating valve stem 2 will directly affect the relative position of the throttling hole 512 and the guide groove, thereby changing 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 throttling disc 51 and the guide disc 52. This structure can gradually reduce the speed of the fluid, thereby reducing the flow noise of the fluid. Due to the design of the spiral cavity, the pressure drop of the fluid is gradually reduced, avoiding the occurrence of cavitation, thereby effectively reducing working noise and vibration. The user 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 regulating elements: In order to facilitate maintenance and repair, the valve core assembly 5 is designed with a quick disassembly device. When the throttling disc 51 or the guide disc 52 needs to be replaced, the regulating element can be quickly disassembled and replaced through the design of the clamping ring 36 and the limit rod set in the valve body 1. During the specific operation, loosen the limit rod, release the clamping 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: Bidirectional flow resistance adjustment: The regulating ball valve has the function of bidirectional 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 achieving bidirectional flow resistance adjustment. In this process, the design of the throttling disc 51 and the guide disc 52 can ensure that the flow resistance control of the fluid in both directions is consistent, meeting the needs under different working conditions.

[0064] The regulating method of the present invention and the design of the regulating ball valve ensure that the valve can still work stably in a fluid environment with high pressure, high flow rate and particulate impurities. The modular design of the throttling disc 51 and the guide disc 52 not only improves the accuracy of flow regulation, but also prolongs the service life of the valve. By reasonably adjusting the spacing and angle, the valve can maintain stable operation for a long time without affecting the flow resistance value, avoiding performance degradation due to excessive flow rate or wear.

[0065] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adaptive bidirectional flow resistance adjustable low noise regulating ball valve, characterized in that: include: A valve body (1) is provided with a first valve port (11) and a second valve port (12) at both ends thereof, respectively, for inputting and discharging liquid; A valve ball (3) is limitedly rotatably arranged in the valve body (1), and a fluid channel (32) is provided therein. The two ends of the fluid channel (32) are respectively connected to the first valve port (11) and the second valve port (12) for draining liquid; A regulating valve stem (2) is connected to the valve ball (3), and the regulating valve ball (3) has a horizontal rotation angle, and a valve core assembly (5) is arranged in the fluid channel (32), and comprises a throttling disc (51) and a guide disc (52) which are arranged in parallel and at intervals, wherein the throttling disc (51) is provided with a plurality of guide holes (522), and the guide disc (52) is provided with a guide groove, and adjacent guide holes (522) and the guide groove are not on the same axis; A liquid spiral cavity is formed by a fluid path formed by adjacent flow guide holes (522) and flow guide grooves. When the fluid medium passes through the valve core assembly (5), it flows along the spiral path. The speed and direction of the fluid gradually change, and the pressure drop is gradually reduced, thereby achieving multi-stage throttling and noise reduction.

2. The adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to claim 1, characterized in that: The throttling disc (51) comprises a first disc body (11), a throttling hole (512) and a first outer tooth portion (513); the diameter of the first disc body (11) is matched with the diameter of the fluid channel (32); the throttling hole (512) is arranged on the first disc body (511), and a corresponding number of holes are opened and the size of the holes is adjusted according to the flow resistance value requirement; the first outer tooth portion (513) is arranged on the outer periphery of the first disc body (511), and the gear specifications and number of the first outer tooth portion (513) are matched with the inner tooth groove (35) provided along the axial direction of the outer periphery of the fluid channel (32), and the first outer tooth portion (513) is embedded in the inner tooth groove (35).

3. The adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to claim 2, characterized in that: The guide disc (52) comprises a second disc body (521), a guide groove and a second outer tooth portion (524); the diameter of the second disc body (521) is matched with the diameter of the fluid channel (32); the guide groove comprises a guide hole (522) and a guide plate (523); the guide hole (522) is through-set on the second disc body (521); the central axis thereof does not coincide with the central axis of the adjacent throttling hole (512); liquid can be discharged through the guide hole (522); the guide plate (523) is obliquely arranged on the outer side of the guide hole (522); the two form a groove-shaped structure; the discharged liquid is guided so that the fluid flows along a set path; the second outer tooth portion (524) is arranged on the outer periphery of the second disc body (521); the gear tooth specification and quantity thereof are matched with the inner tooth groove (35), and the second outer tooth portion (524) is embedded in the inner tooth groove (35).

4. An adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to any one of claims 1-3, characterized in that: A plurality of groups of circumferentially arranged positioning grooves (34) are provided at intervals on the outer periphery of the fluid channel (32), and a clamping ring (36) is installed in the positioning groove (34), and the clamping ring (36) is used to axially limit and fix the valve core assembly (5).

5. The adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to claim 4, characterized in that: A return spring is provided at the bottom of the clamping ring (36), and the other end of the return spring is fixedly connected to the bottom of the positioning groove (34).

6. The adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to claim 5, characterized in that: The valve ball (3) is also provided with a limiting rod which is parallel to the fluid channel (32) and penetrates through a plurality of positioning grooves (34) to limit the bottom of the clamping ring (36) and prevent the clamping ring (36) from retracting into the positioning groove (34).

7. The adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to claim 3, characterized in that: The angle between the guide plate (523) and the guide hole (522) is adjusted according to the required flow resistance value requirement; the guide hole (522) is selected to be a circular hole, a triangular hole, a rectangular hole or a special-shaped hole; the guide plate (523) is selected to be a triangular plate, a circular plate, a rectangular plate or a special-shaped plate.

8. An adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to any one of claims 1-3, characterized in that: The valve ball (3) is arranged in the valve body (1) for limited rotation, and comprises a ball (31), a fluid channel (32) and a connecting groove (33); the ball (31) is adapted to the spherical cavity of the valve body (1), and rotates horizontally on the valve body (1) to control the flow of fluid; the fluid channel (32) is a cylindrical cavity, which passes through the ball (31) in the horizontal direction, and its two ends are respectively connected to the first valve port (11) and the second valve port (12), thereby providing a fluid flow channel; the connecting groove (33) is arranged at the top of the ball (31), and is engaged with the regulating valve stem (2).

9. An adaptive bidirectional flow resistance adjustable low noise regulating ball valve according to any one of claims 1-3, characterized in that: The valve body (1) is also provided with a valve seat assembly (4), which is located on both sides of the valve ball (3) and includes an O-ring, which seals both sides of the valve ball (3) to prevent fluid from penetrating from the valve ball (3) into the cavity of the valve body (1).

10. A throttling adjustment method for a low-noise regulating ball valve with an adaptive two-way flow resistance and adjustable flow resistance, characterized in that: The low-noise regulating ball valve according to any one of claims 1 to 9 is used to achieve the above, comprising: S100: Install the regulating ball valve: ensure that the angle and distance of the throttling disc (51) and the guide disc (52) are adjusted to the initial requirements, and ensure that the fluid channel (32) of the valve ball (3) is smooth to avoid foreign matter getting stuck; S200: Adjusting the flow resistance value: By adjusting the adjusting valve stem (2) on the valve ball (3), the rotation angle of the valve ball (3) is controlled, and the angle and spacing between the throttling disc (51) and the guide disc (52) in the valve core assembly (5) will change, thereby adjusting the path, speed and flow resistance of the fluid when 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 guide disc (52). This structure can gradually reduce the speed of the fluid, thereby reducing the flow noise of the fluid; S400: Maintenance and replacement of regulating elements: The valve core assembly (5) is designed with a quick disassembly device. When the throttling disc (51) or the guide disc (52) needs to be replaced, the regulating element can be quickly disassembled and replaced through the design of the clamping ring (36) and the limit rod set in the valve body (1); S500: Bidirectional flow resistance adjustment: The flow direction of the fluid through the valve body is changed by adjusting the rotation angle of the valve ball (3), thereby achieving bidirectional flow resistance adjustment. The design of the throttling disc (51) and the guide disc (52) can ensure that the flow resistance of the fluid in both directions is controlled consistently, meeting the requirements under different working conditions.

Images