Self-adaptive flow adjusting device for water supply and drainage branch pipe

Abstract

The invention discloses a water supply and drainage branch pipe flow self-adaptive adjusting device, and belongs to the technical field of water supply and drainage pipeline equipment.The water supply and drainage branch pipe flow self-adaptive adjusting device comprises a water supply and drainage branch pipe body, and the inner side of the water supply and drainage branch pipe body is provided with a flow adjusting unit through an installation assembly; the flow adjusting unit comprises a self-adaptive adjusting assembly used for conducting self-adaptive adjustment according to the flow of water supply and drainage, and the flow adjusting unit further comprises a branch pipe protection assembly used for preventing the branch pipe from being damaged due to the fact that the water flow is too large. A pure mechanical flow self-adaptive adjusting structure is constructed in cooperation with the water flow impact column sliding under the impact force of water flow and the resistance spring providing reverse resistance, step-by-step adjustment of the through-flow area can be achieved according to the size of the water flow, different water flow working conditions are effectively adapted, water flow deposition under low flow is avoided, and the service life of the water flow self-adaptive adjusting structure is prolonged. And the impact of water flow on the branch pipe under medium and large flow is reduced, and stable through-flow of the branch pipe under different flow working conditions is realized.

Description

Technical Field

[0001] This invention relates to the field of water supply and drainage pipeline equipment, specifically to an adaptive flow regulation device for water supply and drainage branch pipes. Background Technology

[0002] In building indoor water supply and drainage, municipal water supply and drainage networks, and industrial plant water supply and drainage, water supply and drainage branch pipes are an important component of the entire water flow transmission system, responsible for distributing water from the main pipe to various water or drainage points. In actual use, the water flow rate within the branch pipes fluctuates irregularly due to changes in water and drainage demands. Low flow, medium flow, high flow, and instantaneous overflow conditions frequently alternate, placing high demands on the flow capacity and protection capabilities of the branch pipes. However, existing water supply and drainage branch pipes generally lack purely mechanical adjustment structures to adapt to flow changes, requiring dedicated flow regulation devices to achieve stable flow. The rationality of the structural design of such regulation devices directly affects the operational stability and service life of the branch pipes.

[0003] Most existing flow regulation devices for water supply and drainage branch pipes are single-pass structures, which cannot adaptively adjust the flow area according to changes in water flow. At low flow rates, the water flow velocity is too slow, leading to siltation problems. At high flow rates, the insufficient flow area results in excessively fast water flow, continuously impacting the inner wall of the branch pipe, elbows, and joints, causing wear, vibration, and even breakage of the branch pipe. At the same time, although some regulation devices are equipped with multi-level flow structures, they lack corresponding overflow protection mechanisms. When the flow rate exceeds the limit instantaneous limit, a high-velocity jet will form at the small flow opening, causing severe impact on the branch pipe, which can easily lead to pipe fitting damage, joint leakage, and other problems. Furthermore, the devices lack precise mechanical guidance and linkage structures, and the regulating components are prone to swaying and jamming under water flow impact, and fail to reset in time, making it impossible to achieve stable flow regulation and seriously affecting the normal operation of water supply and drainage branch pipes. Summary of the Invention

[0004] The purpose of this invention is to provide an adaptive flow regulation device for water supply and drainage branch pipes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a water supply and drainage branch pipe body, wherein a flow regulating unit is installed on the inner side of the water supply and drainage branch pipe body by means of an installation component, the flow regulating unit includes an adaptive regulating component for adaptively regulating the flow of water supply and drainage, and the flow regulating unit also includes a branch pipe protection component for preventing excessive water flow from damaging the branch pipe.

[0006] As a further preferred embodiment of this technical solution: the adaptive adjustment component includes a flow regulating pipe fitted inside the main body of the water supply and drainage branch pipe, the flow regulating pipe having a flow regulating outlet inside, a water flow impact column slidably fitted inside the flow regulating pipe, a guide groove being provided inside the water flow impact column, a guide ring being slidably connected inside the guide groove, and a resistance spring being provided on one side of the water flow impact column.

[0007] As a further preferred embodiment of this technical solution: one end of the water flow impact column is hemispherical, and three sets of flow regulating outlets are provided, with each of the three sets of flow regulating outlets having a different aperture size, and being divided into small, medium and large.

[0008] As a further preferred embodiment of this technical solution: one end of the resistance spring is fixedly disposed on the side of the water flow impact column away from the hemisphere, and the guide ring slides on the inner side of the flow regulating pipe through the guide groove to guide the flow regulating pipe when it is impacted by the water flow.

[0009] As a further preferred embodiment of this technical solution: the branch pipe protection assembly includes a fixed shell installed at the end of the guide ring away from the water flow impact column, a fixed ring connected to one side of the fixed shell, an emergency sliding rod connected to the inner side of the fixed ring, a piston block connected to one end of the emergency sliding rod, a hydraulic pipe installed inside the fixed shell, a hydraulic connecting pipe installed through the outer side of the hydraulic pipe, a piston rod connected to the inner side of one end of the hydraulic connecting pipe, a blocking block connected to one end of the piston rod, and a baffle connected to the outer side of the blocking block near the piston rod.

[0010] As a further preferred embodiment of this technical solution: the fixing ring is disposed on the side of the fixing shell near the resistance spring, the emergency slide rod is slidably connected through the middle position of the fixing shell and the fixing ring, and the piston block is slidably connected to the inside of the hydraulic pipe to squeeze the hydraulic oil disposed inside the hydraulic pipe;

[0011] As a further preferred embodiment of this technical solution: one end of the hydraulic connecting pipe passes through the fixed shell and is fixedly installed on the hydraulic pipe; the piston rod slides against the inside of the end of the hydraulic connecting pipe away from the hydraulic pipe; and one end of the blocking block slides against the inside of the small flow rate regulating outlet to block the small flow rate regulating outlet.

[0012] As a further preferred embodiment of this technical solution: the branch pipe protection assembly further includes a return spring sleeved on the outside of the emergency slide bar, and a connecting piece is provided on the outside of the end of the emergency slide bar away from the fixed ring. The two ends of the return spring are respectively fixedly connected to one side of the connecting piece and the side of the fixed ring away from the fixed shell.

[0013] As a further preferred embodiment of this technical solution: the water supply and drainage branch pipe body includes a retaining ring installed inside the water supply and drainage branch pipe body, one end of the water supply and drainage branch pipe body is provided with an internal thread, the threaded mounting cylinder is connected to the water supply and drainage branch pipe body through the internal thread inside the water supply and drainage branch pipe body, one end of the threaded mounting cylinder is connected to a connecting ring pipe, and a fixing clamping ring is sleeved on the outside of the water supply and drainage branch pipe body.

[0014] As a further preferred embodiment of this technical solution: the inner wall of the fixing clamp is fitted to the outer side of the connecting ring pipe and the water supply and drainage branch pipe body, for fastening and sealing the connecting ring pipe and the water supply and drainage branch pipe body; the retaining ring is located inside the water supply and drainage branch pipe body near the main water supply and drainage pipe, and is located on the side near the water flow impact column; the threaded mounting cylinder is located on the side near the fixing shell; the flow regulating unit is installed inside the water supply and drainage branch pipe body through the retaining ring and the threaded mounting cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This device constructs a purely mechanical flow adaptive regulation structure by setting a flow regulating outlet with gradient orifice size, combined with a water flow impact column that slides under the impact force of the water flow and a resistance spring that provides reverse resistance. It can adjust the flow area step by step according to the water flow rate. At low flow rates, only the small-diameter outlet is open to ensure the water flow velocity. At medium and high flow rates, the medium and large-diameter outlets are gradually opened to increase the flow area, effectively adapting to different water flow conditions. This avoids water accumulation at low flow rates and reduces the impact of water flow on the branch pipe at medium and high flow rates, thus achieving stable flow in the branch pipe under different flow conditions.

[0017] 2. When the water flow reaches the overflow state, the water flow impact column pushes the emergency slide rod to trigger the hydraulic transmission mechanism, which drives the blocking block to precisely seal the small flow regulating outlet, so that the water flow only flows through the medium and large flow regulating outlets. This completely avoids the formation of a high-velocity jet impacting the branch pipe from the small flow regulating outlet. Structurally, this achieves special protection for the branch pipe under overflow conditions, effectively preventing problems such as wear, cracking, and interface leakage of the branch pipe due to instantaneous overflow, and extending the service life of the water supply and drainage branch pipes.

[0018] 3. This device features a precise guiding structure with guide grooves and guide rings at the adjustment components, combined with an elastic reset component. This effectively prevents the adjustment components from swaying or jamming under water flow impact, ensuring smooth and timely sliding and reset of the components. The device has a simple overall structure, stable operation, and strong anti-interference ability. It is suitable for complex operating environments with humid and multi-media conditions in water supply and drainage branch pipes. At the same time, the installation structure of the device and branch pipes takes into account both sealing and disassembly, which not only prevents water leakage but also facilitates later maintenance and cleaning. Attached Figure Description

[0019] Figure 1 This is an exploded view of the overall structure of the adaptive flow regulation device for water supply and drainage branch pipes according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of an adaptive flow regulation device for water supply and drainage branch pipes according to the present invention. Figure 1 ;

[0021] Figure 3 This is a partial exploded view of the adaptive flow regulation device for water supply and drainage branch pipes according to the present invention. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the structure of an adaptive flow regulation device for water supply and drainage branch pipes according to the present invention. Figure 2 ;

[0023] Figure 5 This is a partial structural cross-section of a water supply and drainage branch pipe flow adaptive adjustment device according to the present invention. Figure 1 ;

[0024] Figure 6 This is a partial structural cross-section of a water supply and drainage branch pipe flow adaptive adjustment device according to the present invention. Figure 2 ;

[0025] Figure 7 This is a partial exploded view of the adaptive flow regulation device for water supply and drainage branch pipes according to the present invention. Figure 2 ;

[0026] Figure 8 This is a partial structural cross-section of a water supply and drainage branch pipe flow adaptive adjustment device according to the present invention. Figure 3 .

[0027] In the diagram: 1. Main body of water supply and drainage branch pipe;

[0028] 2. Flow regulation unit;

[0029] Adaptive adjustment components: 21. Flow regulating pipe; 22. Flow regulating outlet; 23. Water flow impact column; 24. Guide ring; 25. Guide groove; 26. Resistance spring;

[0030] Branch pipe protection components: 27. Fixed shell; 28. Fixed ring; 29. ​​Emergency slide bar; 210. Piston block; 211. Hydraulic pipe; 212. Hydraulic connecting pipe; 213. Piston rod; 214. Blocking block; 215. Baffle; 216. Return spring; 217. Connecting piece;

[0031] 3. Mounting components; 31. Retaining ring; 32. Threaded mounting sleeve; 33. Connecting ring tube; 34. Fixing clamping ring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example

[0034] Please see Figures 1-8 This is a schematic diagram of some embodiments of a water supply and drainage branch pipe flow adaptive adjustment device used in this application.

[0035] In some embodiments, the adaptive flow regulation device for water supply and drainage branch pipes can be applied to scenarios such as building indoor water supply and drainage systems, municipal water supply and drainage networks, and industrial plant water supply and drainage branch lines. Building indoor water supply and drainage systems may include drainage branch pipes for residential bathrooms, kitchen water supply branch pipes, and fire-fighting water supply branch pipes for commercial buildings; municipal water supply and drainage networks may include community branch pipe networks and street water supply and drainage branch pipes; industrial plant water supply and drainage branch lines may include workshop production water branch pipes and factory wastewater discharge branch pipes. This embodiment describes the device's application to a residential bathroom drainage branch pipe as an example. Of course, similar structures can be used for water supply and drainage branch pipe adaptive flow regulation devices in other application scenarios, and will not be elaborated further below.

[0036] It is understood that the present invention only schematically illustrates the core components of the water supply and drainage branch pipe flow adaptive adjustment device. The actual shape, size, location and structure of these components are not limited by the illustration. The device may also include more or fewer auxiliary components than the core components, such as anti-corrosion coatings, anti-debris filters, flange connections, etc., to improve the adaptability and practicality of the device.

[0037] In some embodiments, the adaptive flow regulation device for water supply and drainage branch pipes may include a water supply and drainage branch pipe body 1, an installation assembly 3, and a flow regulation unit 2, wherein the flow regulation unit 2 is installed inside the water supply and drainage branch pipe body 1 via the installation assembly 3. For example, when this device is applied to a residential bathroom drainage branch pipe, the water supply and drainage branch pipe body 1 is a bathroom PVC drainage branch pipe, the installation assembly 3 is a threaded fit and clamping structure, and the flow regulation unit 2 is a built-in adaptive regulation and protection structure.

[0038] For example, the water supply and drainage branch pipe flow adaptive adjustment device may also include an anti-backflow baffle 215, which is hinged to the inner side of the end of the water supply and drainage branch pipe body 1 near the main pipe, to prevent water from flowing back into the branch pipe and further improve the protection effect of the branch pipe.

[0039] The flow regulation unit 2 may include an adaptive adjustment component and a branch pipe protection component. The adaptive adjustment component is fitted inside the body 1 of the water supply and drainage branch pipe and is used to adaptively adjust the flow orifice diameter according to the water flow rate. The branch pipe protection component is linked to the adaptive adjustment component and is used to protect the branch pipe when the water flow rate exceeds the threshold to avoid damage to the branch pipe caused by water flow impact.

[0040] In this embodiment, the adaptive adjustment component and the branch pipe protection component work together to achieve adaptive adjustment and protection of the flow rate of the water supply and drainage branch pipe under all working conditions, adapting to the complex usage environment of the water supply and drainage branch pipe.

[0041] When the device is applied to the drainage branch pipe of a residential bathroom, the pipe diameter of the drainage branch pipe body 1 can be selected from conventional specifications such as DN50 and DN75. The overall outer diameter of the flow regulating unit 2 is matched with the inner diameter of the drainage branch pipe body 1 to ensure the sealing and flow effect after installation.

[0042] In some embodiments, the adaptive adjustment component may include a flow regulating pipe 21, a flow regulating outlet 22, a water flow impact column 23, a guide groove 25, a guide ring 24, and a resistance spring 26. The flow regulating pipe 21 is fixedly disposed inside the main body 1 of the water supply and drainage branch pipe. The flow regulating outlet 22 is located on the side wall of the flow regulating pipe 21. The water flow impact column 23 is slidably disposed inside the flow regulating pipe 21. The guide groove 25 is located on the outer side wall of the water flow impact column 23. The guide ring 24 is slidably connected to the inner side of the guide groove 25. One end of the resistance spring 26 is fixedly connected to the end of the water flow impact column 23, and the other end abuts against the inner side of the fixing shell 27 of the branch pipe protection component.

[0043] Among them, the flow regulating outlet 22 is the flow passage of water. The orifice diameters of the three sets of flow regulating outlets 22 are designed in a small, medium and large gradient to adapt to the flow requirements of different flow rates. The water flow impact column 23 slides along the inner side of the flow regulating pipe 21 under the action of water flow impact force. By changing the displacement, it gradually opens the flow regulating outlets 22 with different orifice diameters to achieve adaptive adjustment of the flow area. The sliding cooperation between the guide groove 25 and the guide ring 24 provides guidance constraint for the sliding of the water flow impact column 23 to avoid radial sway or jamming under water flow impact. The resistance spring 26 provides reverse resistance for the water flow impact column 23. Its preload determines the critical impact force required for the water flow impact column 23 to open different flow regulating outlets 22, thereby realizing threshold control of flow regulation.

[0044] It should be noted that one end of the water flow impact column 23 is a hemispherical structure. This structure can convert the frontal impact force of the water flow into a thrust along the axial direction of the flow regulating pipe 21, reduce the resistance and eddies during water flow impact, ensure the smooth sliding of the water flow impact column 23, and at the same time prevent debris from accumulating at the end of the water flow impact column 23 and causing jamming.

[0045] Understandably, the location and number of flow regulating outlets 22 shown in the figure are only for illustration. The specific locations can be distributed in a gradient along the axial direction of the flow regulating pipe 21, and the number can also be adjusted according to the flow regulation requirements of the branch pipe. There is no limitation here, as long as it can achieve the gradual opening of flow regulating outlets 22 with different orifices when the water flow impacts the displacement of the column 23.

[0046] In this embodiment, the flow rate adjustment outlet 22 with a gradient orifice, in conjunction with the water flow impact column 23 that slides under the impact of water flow, achieves purely mechanical adaptive adjustment of the flow rate in the water supply and drainage branch pipe: at low flow rates, only the small-diameter outlet opens to ensure stable water flow; at medium flow rates, the water flow impact force overcomes part of the preload of the resistance spring 26, causing the water flow impact column 23 to slide and open the medium-diameter outlet, increasing the flow area; at high flow rates, the water flow impact force further increases, and the water flow impact column 23 continues to slide and open the large-diameter outlet, achieving rapid flow of high flow rates. The entire adjustment process requires no manual intervention and is entirely driven by the impact force of the water flow itself, adapting to the irregular fluctuations in the flow rate of the water supply and drainage branch pipe.

[0047] It should be noted that the stiffness of the resistance spring 26 can be adjusted according to the design flow rate of the water supply and drainage branch pipe. For example, for low-flow residential kitchen water supply branch pipes, a low-stiffness resistance spring 26 can be selected to ensure that adjustment is triggered by a small water flow; for high-flow industrial workshop drainage branch pipes, a high-stiffness resistance spring 26 can be selected to avoid frequent adjustments caused by small flow fluctuations. For example, in some embodiments, the stiffness of the resistance spring 26 adapted to DN50 drainage branch pipes can be selected as 5N / mm, and the stiffness of the resistance spring 26 adapted to DN75 drainage branch pipes can be selected as 8N / mm.

[0048] In some other embodiments, the adaptive adjustment component may also be provided with anti-debris protrusions, which are uniformly arranged on the outer side of the hemispherical end of the water flow impact column 23 to block hair, residue and other debris in the water flow from entering the inner side of the flow adjustment pipe 21, so as to avoid debris from getting stuck and affecting the adjustment effect, and not be limited to achieving flow through the smooth structure of the water flow impact column 23 alone.

[0049] In some embodiments, the branch pipe protection assembly may include a fixed housing 27, a fixed ring 28, an emergency slide rod 29, a piston block 210, a hydraulic pipe 211, a hydraulic connecting pipe 212, a piston rod 213, a blocking block 214, a baffle 215, a return spring 216, and a connecting piece 217. The fixed housing 27 is installed at the end of the guide ring 24 away from the water flow impact column 23. The fixed ring 28 is fixedly connected to the side of the fixed housing 27 near the resistance spring 26. The emergency slide rod 29 is slidably connected through the middle of the fixed housing 27 and the fixed ring 28. The piston block 210 is fixedly connected to one end of the emergency slide rod 29 and slidably connected to the inside of the hydraulic pipe 211. The hydraulic pipe 211 is fixedly installed inside the fixed housing 27. One end of the hydraulic connecting pipe 212 passes through the fixed housing 27 and connects to the hydraulic pipe 211, while the other end extends to the flow regulating pipe 212. At the small flow regulating outlet 22 of 1, the piston rod 213 slides against the inside of the end of the hydraulic connecting pipe 212 away from the hydraulic pipe 211. The blocking block 214 is fixedly connected to one end of the piston rod 213. The baffle 215 is fixedly sleeved on the outside of the piston rod 213 near the blocking block 214. The return spring 216 is sleeved on the outside of the emergency slide rod 29. The connecting piece 217 is fixedly set on the outside of the end of the emergency slide rod 29 away from the fixing ring 28. The two ends of the return spring 216 are respectively fixedly connected to one side of the connecting piece 217 and the side of the fixing ring 28 away from the fixing shell 27.

[0050] Hydraulic pipe 211 contains hydraulic oil. As the emergency slide rod 29 slides, the piston block 210 squeezes the hydraulic oil in the hydraulic pipe 211, converting mechanical displacement into hydraulic thrust, which is transmitted to the piston rod 213 via the hydraulic connection pipe 212. Under the action of hydraulic thrust, the piston rod 213 pushes the blocking block 214 to move, causing the blocking block 214 to embed inside the small flow regulating outlet 22, thus sealing and blocking the small flow regulating outlet 22. The baffle 215 is used to limit the displacement of the piston rod 213, preventing the blocking block 214 from being blocked. 14. Excessive insertion into the flow regulating outlet 22 causes jamming; the return spring 216 provides a return force for the emergency slide bar 29, which drives the emergency slide bar 29 and piston block 210 to reset when the water flow drops, so that the hydraulic thrust disappears, the block block 214 separates from the small flow regulating outlet 22, and the flow of the small flow regulating outlet 22 is restored; the connecting piece 217 provides a fixed support for the return spring 216, and at the same time increases the contact area between the emergency slide bar 29 and the water flow, ensuring that the water flow can effectively push the emergency slide bar 29 to slide when the flow exceeds the limit.

[0051] It should be noted that the emergency slide bar 29 is triggered by a linkage design. Only when the water flow rate reaches the threshold state will the water flow impact column 23 slide to the limit position and push the emergency slide bar 29 to slide, triggering the action of the branch pipe protection component, thus avoiding false protection caused by small flow fluctuations.

[0052] Understandably, the arrangement of hydraulic pipe 211 and hydraulic connecting pipe 212 shown in the figure is only schematic. The specific arrangement can be adjusted according to the internal space of the fixed shell 27, as long as the hydraulic thrust can be effectively transmitted to the piston rod 213 through the hydraulic connecting pipe 212 after the piston block 210 squeezes the hydraulic oil.

[0053] In this embodiment, the branch pipe protection component and the adaptive adjustment component work together to achieve special protection for the branch pipe under overflow conditions: when the water flow is too large and exceeds the flow capacity of the large-diameter outlet, the water flow impact column 23 slides to the limit position and pushes the emergency slide rod 29 to slide. The piston block 210 squeezes the hydraulic oil to generate hydraulic thrust, which pushes the blocking block 214 to block the small flow regulating outlet 22, thus preventing the local jet generated by the high-velocity water flow at the small flow regulating outlet 22 from impacting the inner wall of the branch pipe, elbow, or interface, fundamentally reducing the risk of damage to the branch pipe caused by the overflow water flow. At the same time, after blocking the small flow regulating outlet 22, the water flow only flows through the medium and large-diameter outlets, and the flow area is adapted to the overflow water flow, avoiding problems such as branch pipe rupture and interface leakage caused by a sudden increase in internal pressure.

[0054] It should be noted that the end of the plugging block 214 has a tapered structure. This structure allows the plugging block 214 to quickly and accurately embed into the low-flow regulating outlet 22, improving the sealing effect while avoiding wear caused by hard collision between the plugging block 214 and the edge of the outlet. For example, in some embodiments, the taper of the plugging block 214 can be selected as 1:5, which matches the inner taper of the low-flow regulating outlet 22 to ensure a tight seal.

[0055] In some other embodiments, the branch pipe protection assembly may also be provided with a hydraulic oil replenishment port. The hydraulic oil replenishment port is located on the outside of the fixed shell 27 and is connected to the hydraulic pipe 211. A sealing plug is provided at the replenishment port to facilitate the replenishment of hydraulic oil during later maintenance. The structure is not limited to the one-time filling of hydraulic oil inside the hydraulic pipe 211.

[0056] In some embodiments, the water supply and drainage branch pipe body 1 includes a retaining ring 31, an internal thread, a threaded mounting sleeve 32, a connecting ring pipe 33, and a fixing clamping ring 34. The retaining ring 31 is integrally formed inside the water supply and drainage branch pipe body 1, the internal thread is formed on the inner side of one end of the water supply and drainage branch pipe body 1, the threaded mounting sleeve 32 is threadedly connected to the water supply and drainage branch pipe body 1 through the internal thread, the connecting ring pipe 33 is fixedly connected to one end of the threaded mounting sleeve 32, and the fixing clamping ring 34 is sleeved on the outer side of the water supply and drainage branch pipe body 1. The mounting assembly 3 consists of the retaining ring 31, the internal thread, the threaded mounting sleeve 32, and the fixing clamping ring 34, and is used to detachably install the flow regulating unit 2 on the inner side of the water supply and drainage branch pipe body 1.

[0057] The retaining ring 31 is located on the inner side of the end of the water supply and drainage branch pipe body 1 closest to the main water supply and drainage pipe, and on the side close to the water flow impact column 23. It is used to axially limit the flow regulating unit 2 and prevent the water flow impact force from pushing the flow regulating unit 2 towards the main pipe. The threaded mounting cylinder 32 is connected to the water supply and drainage branch pipe body 1 through the internal thread and is located on the side close to the fixing shell 27. It cooperates with the retaining ring 31 to fix both ends of the flow regulating unit 2 and ensure the installation stability of the flow regulating unit 2 in the branch pipe. The connecting ring pipe 33 is sleeved on the outside of the connection between the threaded mounting cylinder 32 and the water supply and drainage branch pipe body 1 to improve the sealing performance of the connection and prevent water leakage. The inner wall of the fixing clamp 34 is attached to the outside of the connecting ring pipe 33 and the water supply and drainage branch pipe body 1. By tightening the bolts of the fixing clamp 34, the connection is tightened and sealed, further improving the sealing and stability of the installation.

[0058] It should be noted that the material of the water supply and drainage branch pipe body 1 can be selected according to the application scenario. For example, PVC or PPR material can be used for indoor water supply and drainage branch pipes in buildings, ductile iron material can be used for municipal water supply and drainage network branch pipes, and stainless steel material can be used for water supply and drainage branch pipes in industrial plants. In this embodiment, PVC material is selected to meet the usage requirements of residential bathroom drainage branch pipes.

[0059] Understandably, the structure of the fixed clamp 34 shown in the figure is only for illustration. The specific structure can be a hose clamp type, a flange clamp type, etc., and is not limited here, as long as it can achieve a tight seal at the connection between the connecting ring pipe 33 and the water supply and drainage branch pipe body 1.

[0060] In this embodiment, the precise positioning and fixing of the flow regulating unit 2 within the water supply and drainage branch pipe body 1 is achieved through the cooperation of the retaining ring 31 and the threaded mounting sleeve 32, ensuring that the axis of the flow regulating unit 2 coincides with the axis of the branch pipe body, thus avoiding problems such as water flow deviation and regulation jamming caused by installation misalignment. At the same time, the threaded connection makes the flow regulating unit 2 detachable, facilitating later maintenance, replacement and cleaning, and adapting to the impurity characteristics of the water supply and drainage branch pipe medium. The double sealing and fastening of the connecting ring pipe 33 and the fixing clamping ring 34 effectively prevents water leakage at the connection point and improves the overall sealing performance of the device.

[0061] In some other embodiments, the mounting assembly 3 may also be equipped with a buffer pad, which is disposed between the retaining ring 31 and the flow regulating pipe 21 to buffer the vibration caused by the water flow impact, reduce wear between components, extend the service life of the device, and is not limited to a hard contact limiting structure.

[0062] Working principle: When the device is in the initial state, the water flow rate in the water supply and drainage branch pipe is small, and the water flow impact force cannot overcome the initial preload of the resistance spring 26. The water flow impact column 23 remains in the initial position, and only the small flow rate regulating outlet 22 is in the open state. The water flows through the outlet at a constant speed to complete the flow. The sliding cooperation between the guide groove 25 and the guide ring 24 restricts the radial sway of the water flow impact column 23 and ensures the stability of the flow state.

[0063] When the water flow rate in the branch pipe increases to the medium flow rate, the water flow impact force overcomes part of the preload force of the resistance spring 26 and pushes the water flow impact column 23 to slide along the inner side of the flow regulating pipe 21 toward the fixed shell 27. After the water flow impact column 23 slides to the preset position, the medium flow regulating outlet 22 is opened, and the water flow from the small and medium flow regulating outlets 22 flows together, increasing the flow area, reducing the water flow velocity, and avoiding impact damage to the branch pipe caused by the medium flow rate.

[0064] When the water flow rate in the branch pipe further increases to the large flow rate, the water flow impact force continues to increase, pushing the water flow impact column 23 to continue sliding along the flow regulating pipe 21 until the large flow regulating outlet 22 is opened. The water flow is simultaneously passed through the three sets of flow regulating outlets 22 (small, medium and large), realizing the rapid flow of large flow, ensuring stable pressure in the branch pipe, and avoiding problems such as overflow and vibration.

[0065] When the water flow rate in the branch pipe exceeds the design threshold and becomes an overflow state, the water flow impact force pushes the water flow impact column 23 to slide to the limit position. The end of the water flow impact column 23 pushes the emergency slide rod 29 to slide towards the fixed shell 27. The return spring 216 is compressed. The emergency slide rod 29 drives the piston block 210 to slide in the hydraulic pipe 211 and squeeze the internal hydraulic oil. The hydraulic thrust generated by the hydraulic oil is transmitted to the piston rod 213 through the hydraulic connection pipe 212. The piston rod 213 drives the blocking block 214 to move towards the small flow rate regulating outlet 22, so that the blocking block 214 is embedded in the small flow rate regulating outlet 22 to complete the sealing and blocking. At this time, the water flow only flows through the medium and large flow rate regulating outlet 22, completely avoiding the high flow velocity jet of the small flow rate regulating outlet 22 from impacting the inner wall of the branch pipe and the pipe fittings, thus realizing the overflow protection of the branch pipe.

[0066] As the water flow rate in the branch pipe gradually decreases from the overflow state, the water flow impact force decreases accordingly. The rebound force of the resistance spring 26 pushes the water flow impact column 23 to slide back to the initial position. The thrust on the emergency slide rod 29 disappears, and the reset spring 216 releases its elastic potential energy to push the emergency slide rod 29 and piston block 210 to reset. The hydraulic thrust in the hydraulic pipe 211 disappears, and the piston rod 213 drives the blockage block 214 to separate from the small flow rate regulating outlet 22, and the small flow rate regulating outlet 22 resumes flow. When the water flow rate continues to decrease to the medium flow rate and low flow rate, the water flow impact column 23 gradually resets under the action of the resistance spring 26, and the large flow rate and medium flow rate regulating outlets 22 close in sequence. The device returns to the flow state of the corresponding flow rate, completing the entire reset process.

[0067] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of this invention.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow adaptive regulating device for water supply and drainage branch pipes, characterized in that: The system includes a water supply and drainage branch pipe body (1), and a flow regulating unit (2) is installed on the inner side of the water supply and drainage branch pipe body (1) through an installation component (3). The flow regulating unit (2) includes an adaptive regulating component for adaptively adjusting according to the flow rate of water supply and drainage, and the flow regulating unit (2) also includes a branch pipe protection component for preventing excessive water flow from damaging the branch pipe.

2. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 1, characterized in that: The adaptive adjustment component includes a flow regulating pipe (21) fitted inside the main body (1) of the water supply and drainage branch pipe. The flow regulating pipe (21) has a flow regulating outlet (22) inside. A water flow impact column (23) is fitted and slidably arranged on the inner side of the flow regulating pipe (21). A guide groove (25) is arranged on the inner side of the water flow impact column (23). A guide ring (24) is slidably connected on the inner side of the guide groove (25). A resistance spring (26) is arranged on one side of the water flow impact column (23).

3. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 2, characterized in that: One end of the water flow impact column (23) is hemispherical. The flow rate regulating outlet (22) is provided in three sets, and each of the three sets of flow rate regulating outlets (22) has a different aperture size, and is divided into small, medium and large.

4. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 3, characterized in that: One end of the resistance spring (26) is fixedly set on the side of the water flow impact column (23) away from the hemisphere. The guide ring (24) slides on the inner side of the flow regulating pipe (21) through the guide groove (25) to guide the flow regulating pipe (21) when it is impacted by the water flow.

5. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 4, characterized in that: The branch pipe protection assembly includes a fixed shell (27) installed on the end of the guide ring (24) away from the water flow impact column (23). A fixed ring (28) is connected to one side of the fixed shell (27). An emergency slide rod (29) is connected to the inner side of the fixed ring (28). A piston block (210) is connected to one end of the emergency slide rod (29). A hydraulic pipe (211) is installed on the inner side of the fixed shell (27). A hydraulic connecting pipe (212) is installed through the outer side of the hydraulic pipe (211). A piston rod (213) is connected to the inner side of one end of the hydraulic connecting pipe (212). A blocking block (214) is connected to one end of the piston rod (213). A baffle (215) is connected to the outer side of the blocking block (214) near the piston rod (213).

6. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 5, characterized in that: The fixing ring (28) is located on the side of the fixing shell (27) near the resistance spring (26). The emergency slide rod (29) is slidably connected through the middle position of the fixing shell (27) and the fixing ring (28). The piston block (210) is slidably connected to the inside of the hydraulic pipe (211) to squeeze the hydraulic oil inside the hydraulic pipe (211).

7. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 6, characterized in that: One end of the hydraulic connecting pipe (212) passes through the fixed shell (27) and is fixedly installed on the hydraulic pipe (211). The piston rod (213) slides against the inside of the end of the hydraulic connecting pipe (212) away from the hydraulic pipe (211). One end of the blocking block (214) slides against the inside of the small flow regulating outlet (22) to block the small flow regulating outlet (22).

8. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 7, characterized in that: The branch pipe protection assembly also includes a return spring (216) sleeved on the outside of the emergency slide bar (29). A connecting piece (217) is provided on the outside of the end of the emergency slide bar (29) away from the fixing ring (28). The two ends of the return spring (216) are respectively fixedly connected to one side of the connecting piece (217) and the side of the fixing ring (28) away from the fixing shell (27).

9. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 8, characterized in that: The water supply and drainage branch pipe body (1) includes a retaining ring (31) installed inside the water supply and drainage branch pipe body (1). One end of the water supply and drainage branch pipe body (1) is provided with an internal thread. The threaded mounting cylinder (32) is connected to the water supply and drainage branch pipe body (1) through the internal thread inside the water supply and drainage branch pipe body (1). One end of the threaded mounting cylinder (32) is connected to a connecting ring pipe (33). A fixing clamping ring (34) is sleeved on the outside of the water supply and drainage branch pipe body (1).

10. The adaptive flow regulation device for water supply and drainage branch pipes according to claim 9, characterized in that: The inner wall of the fixed clamp (34) is attached to the outer side of the connecting ring pipe (33) and the water supply and drainage branch pipe body (1) to fasten and seal the connecting ring pipe (33) and the water supply and drainage branch pipe body (1). The retaining ring (31) is located inside the water supply and drainage branch pipe body (1) near the main water supply and drainage pipe and is located on the side near the water flow impact column (23). The threaded mounting cylinder (32) is located on the side near the fixed shell (27). The flow regulating unit (2) is installed on the inner side of the water supply and drainage branch pipe body (1) through the retaining ring (31) and the threaded mounting cylinder (32).

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