Adjustable flow and pressure building subarea water supply pressure stabilizing system

Abstract

The utility model provides a building partition water supply pressure stabilizing system of adjustable flow and pressure relates to building water supply technical field. It includes water pool, Y type filter, delivery pump, air pressure tank, pressure reducing valve, main pipe and the partition water supply pipe of containing high, middle, low layer water supply pipe, main pipe series connection water pool, Y type filter, delivery pump and air pressure tank, and the partition water supply pipe all link main pipe and are equipped with flow pressure regulating device, and the middle layer and low layer water supply pipe still are equipped with pressure reducing valve. Air pressure tank has double -layer air bag, and flow pressure regulating device is self -force type regulating valve, and still is equipped with spare pipeline and main pipeline parallel connection. The system protects through Y type filter and double -layer air bag, reduces air bag consumption, and through two stage control pressure adaptation actual working condition, and the part dismounts convenient, can avoid pressure sudden drop, the problem of cut -off, prolongs the service life, promotes water supply stability and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of building water supply technology, and in particular to a building zoned water supply pressure stabilization system with adjustable flow and pressure. Background Technology

[0002] With the development of the times, high-rise buildings are becoming increasingly common. Currently, the water supply system for high-rise buildings often uses a vertical zone system to provide water in different sections along the building's vertical axis, aiming to achieve a relatively even and moderate water pressure across water equipment and pipes. However, the water quality in building water supply systems is complex. Residual disinfection from municipal water supply can lead to excessive chloride ion concentrations, and impurities such as welding slag and sediment left over from pipe installation can easily cause stress corrosion and mechanical wear on the gasket, leading to gasket rupture or leakage. This allows water to directly enter the gas chamber of the tank, causing a sudden drop in system pressure, forcing the water pump to start and stop frequently, and even causing water supply interruptions at the user end. Existing water supply pressure stabilization systems cannot easily adjust the flow and pressure at the output end according to the actual pressure at the inlet, affecting the service life of indoor valves. The regulating actuator of existing flow and pressure regulating devices is often connected to the valve body by bolts. Disassembly and assembly of the regulating actuator and valve body require tools, and the springs and diaphragm chambers of the actuator also hinder operation, resulting in limited operating space and making disassembly and replacement difficult. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a building zoned water supply pressure stabilization system with adjustable flow and pressure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable flow and pressure building zoned water supply and pressure stabilization system includes a water tank, a Y-type filter, a transfer pump, a pressure tank, a pressure reducing valve, a main pipe, and zoned water supply pipes; The zoned water supply pipe includes a high-level water supply pipe, a middle-level water supply pipe, and a low-level water supply pipe. The main pipe is connected in series with the water tank, the Y-type filter, the delivery pump, and the pressure tank. The end of the main pipe is connected to the high-level water supply pipe. The middle-level water supply pipe and the low-level water supply pipe are connected to the main pipe. Flow and pressure regulating devices are connected to the high-level water supply pipe, the middle-level water supply pipe, and the low-level water supply pipe. Pressure reducing valves are provided on the middle-level water supply pipe and the low-level water supply pipe. The flow and pressure regulating devices are located at the rear end of the pressure reducing valves. The pressure tank is equipped with an air bladder, which is a double-layered air bladder. The main pipe is connected to the air bladder through a first pipe. The flow and pressure regulating device is a self-regulating valve.

[0005] Furthermore, a backup pipeline is provided, which is connected in series with the first delivery pump and the first pressure tank; the backup pipeline is connected in parallel with the delivery pump and the pressure tank.

[0006] Furthermore, the flow and pressure regulating device includes a regulating actuator, a valve body, and a connecting seat. The valve body has a communicating chamber, one end of which is a pre-valve chamber, the other end is a post-valve chamber, and the middle is a valve chamber. The regulating actuator includes a diaphragm chamber, a diaphragm, a valve stem, a spring, a valve core, and a connecting pipe. The diaphragm is disposed in the middle of the diaphragm chamber, dividing the diaphragm chamber into an upper chamber and a lower chamber. The upper end of the valve stem is connected to the diaphragm, and the lower end of the valve stem extends into the valve chamber. The lower end of the valve stem fixes the valve core. The two ends of the connecting pipe are respectively connected to the post-valve chamber and the upper chamber. A pressure plate is provided on the valve stem, and the spring is sleeved on the valve stem. The upper end of the spring is in contact with the pressure plate. The connecting seat is an end cap. The middle of the end cap has a round hole for the valve stem to pass through. The inside of the end cap has a short tube. The short tube is concentrically arranged with the end cap. A baffle is fixed to the upper wall of the valve cavity. The baffle is annular. A short cylinder is concentrically fixed to the upper end of the valve cavity. The outside of the short cylinder has an external thread. The end cap has a corresponding internal thread. The end cap is fixed to the short cylinder by threaded connection. A gasket and a sealing ring are arranged in sequence on the baffle. The lower end face of the short tube abuts against the sealing ring. The lower end of the spring is connected to the upper end of the end cap. The valve stem and the sealing ring are slidably engaged.

[0007] Furthermore, the inner diameter of the short tube is the same as the diameter of the circular hole; the outer diameter of the short tube matches the inner diameter of the short cylinder; the inner diameter of the baffle is larger than the outer diameter of the valve core; and the inner diameter of the gasket is the same as the diameter of the circular hole.

[0008] Furthermore, an annular block is concentrically provided on the upper end face of the end cap, the outer diameter of the annular block is the same as the inner diameter of the spring, and the lower end of the spring is sleeved on the annular block.

[0009] Furthermore, the connecting pipe includes an upper pipe, a lower pipe, and a connecting cover. The upper pipe is an L-shaped pipe, with one end connected to the upper chamber. The outer side wall of the other end of the upper pipe is provided with an annular end plate. The connecting cover includes a cover plate and a cover wall. The cover plate is fixed to the upper end of the cover wall. The cover plate is provided with a first circular hole. The cover plate is fitted onto the outside of the upper pipe through the first circular hole. The outer diameter of the annular end plate is larger than the diameter of the first circular hole. The side of the cover plate facing the annular end plate is also provided with a sealing groove. The sealing groove is annular and a first sealing ring is provided inside the sealing groove. The lower end of the lower pipe is connected to the valve rear chamber. The outer side wall of the upper end of the lower pipe is provided with a first thread, and the inner side of the cover wall is provided with a corresponding second thread.

[0010] Furthermore, an annular baffle is provided on the outer side wall near the upper end of the lower tube, and a sealing gasket is provided on the upper surface of the annular baffle.

[0011] Furthermore, a mounting groove is provided near the lower end of the valve stem. The mounting groove is annular, and a circular groove is concentrically provided on the upper surface of the valve core. The groove wall of the circular groove is provided with annular groove protrusions.

[0012] Furthermore, flanges are provided at both the left and right ends of the valve body, and through holes are provided on the flanges.

[0013] Furthermore, the membrane chamber is composed of two opposing shells connected by bolts, and the edge of the diaphragm is pressed and fixed between the upper and lower shells.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model adopts a double-layer airbag design for the pressure tank. The outer layer can provide safety redundancy. Even if the inner layer is damaged due to corrosion or wear, the outer layer can still temporarily receive the medium, preventing water from entering the air chamber of the tank and causing a sudden drop in pressure. The airbag is made of fluororubber material to resist the corrosion of chloride ions in municipal water supply. In addition, a Y-type filter is connected in series at the front end of the main pipe to intercept impurities such as welding slag and mud, reduce mechanical wear of the airbag, and extend its service life. At the same time, the backup pipeline is connected in parallel with the main pipeline, and can be seamlessly switched when the main equipment fails, ensuring 24-hour continuous water supply, avoiding supply interruption, and avoiding problems such as easy damage to the airbag, sudden drop in system pressure, and supply interruption. (2) This utility model adopts a two-stage pressure control mode of initial pressure reduction by a pressure reducing valve and dynamic fine adjustment by a flow and pressure regulating device. It can adapt the flow and pressure according to the actual working conditions at the inlet. The flow and pressure regulating device automatically adjusts the valve core position through the linkage between the pressure in the valve cavity and the spring stiffness, and balances the system pressure in real time. This avoids the impact of excessive water pressure or large fluctuations on the indoor valves, and significantly extends the service life of the indoor valves. (3) The end cap of the flow and pressure regulating device of this utility model is connected to the valve cavity short cylinder by thread. It can be manually screwed and assembled without tools, avoiding the problems of small operating space and difficult assembly and disassembly of bolted connections. The propyne is actually a detachable connecting pipe and diaphragm chamber, which facilitates the replacement of core components and improves the convenience of maintenance. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a building zoned water supply pressure stabilization system with adjustable flow and pressure according to the present invention; Figure 2 This is a schematic diagram of the flow and pressure regulating device of a building zone water supply pressure stabilization system with adjustable flow and pressure according to the present invention. Figure 3 This is a three-dimensional structural diagram of a flow and pressure regulating device connecting seat according to the present invention; Figure 4 This is an enlarged view of part a of the flow and pressure regulating device of this utility model. Detailed Implementation

[0016] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0017] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of the present invention provides a building zoned water supply pressure stabilization system with adjustable flow and pressure, comprising a water tank 1, a Y-type filter 2, a delivery pump 3, a pressure tank 4, a pressure reducing valve 5, a main pipe 6, and a zoned water supply pipe 7. The zoned water supply pipe 7 includes a high-level water supply pipe 71, a middle-level water supply pipe 72, and a low-level water supply pipe 73. The main pipe 6 is connected in series with the water tank 1, the Y-type filter 2, the delivery pump 3, and the pressure tank 4. The end of the main pipe 6 is connected to the high-level water supply pipe 71. The middle-level water supply pipe 72 and the low-level water supply pipe 73 are connected to the main pipe 6. Flow and pressure regulating devices 8 are respectively connected to the high-level water supply pipe 71, the middle-level water supply pipe 72, and the low-level water supply pipe 73. Pressure reducing valves 5 are respectively provided on the middle-level water supply pipe 72 and the low-level water supply pipe 73. The flow and pressure regulating device 8 is located at the rear end of the pressure reducing valve 5. By setting the Y-type filter 2 at the front end of the pressure tank 4, impurities in the water are removed, avoiding wear of the pressure tank's air bladder by impurities and extending the system's lifespan.

[0018] The pressure tank 4 contains an air bladder 41 made of fluororubber, which improves chlorine resistance by three times, preventing excessive chloride ion concentration that could lead to air bladder corrosion and rupture. The air bladder 41 is a double-layered structure to ensure its lifespan; the outer layer provides safety redundancy, allowing it to temporarily absorb the medium even if the inner layer fails, preventing sudden pressure drops and supply interruptions. The main pipe 6 is connected to the air bladder 41 via a first pipe 42, and the flow and pressure regulating device 8 is a self-regulating valve.

[0019] Water tank 1 stores water. After passing through Y-type filter 2 to intercept impurities such as welding slag and silt, the water is pressurized by pump 3 and delivered to the main pipe. Part of the water flows through the first pipe into pressure tank 4. At this time, the water flow squeezes the double-layered air bladder 41 inside the tank, compressing the gas (usually nitrogen) between the air bladder 41 and the inner wall of the tank. The gas pressure gradually increases with the increase of water volume until the system pressure is balanced. When the system pressure drops due to user water usage, compressed air squeezes the air bladder 41, forcing water into the main pipe and quickly replenishing the water stored in the tank to the main pipe 6, making up for the flow gap, preventing a sharp drop in water pressure, and maintaining stable system pressure. The water flow from the main pipe is distributed to the high-rise, middle-rise, and low-rise water supply pipelines. The water pressure in the middle-rise and low-rise water supply pipelines is initially reduced by pressure reducing valve 5 to reduce the workload of subsequent regulating devices. Then, the flow and pressure are dynamically fine-tuned by the downstream flow and pressure regulating device 8 according to the actual water demand at the end. The high-rise water supply pipeline 71 is directly regulated and controlled by the flow and pressure regulating device 8. Through a two-stage pressure control system consisting of a pressure reducing valve and a flow and pressure regulating device, precise pressure control is achieved, adapting to the personalized needs of different floors and different water usage scenarios, reducing the load on user valves at the end point, and extending the service life of user valves.

[0020] Furthermore, a backup pipeline 9 is provided, which is connected in series with the first delivery pump 91 and the first pressure tank 92; the backup pipeline 9 is also connected in parallel with the delivery pump 3 and the pressure tank 4. In the event of a failure of the delivery pump 3, the backup pipeline can seamlessly switch over, avoiding water supply interruptions caused by a single pump shutdown, improving system reliability, adapting to 24-hour continuous water supply requirements, and facilitating maintenance and repair.

[0021] Furthermore, the flow and pressure regulating device 8 includes a regulating actuator 100, a valve body 200, and a connecting seat 300. The valve body 200 has a communicating chamber, one end of which is a pre-valve chamber 201, the other end of which is a post-valve chamber 202, and the middle is a valve chamber 203. The pre-valve chamber 201 is connected to the valve chamber 203, and the post-valve chamber 202 is connected to the bottom end of the valve chamber 203. The bottom of the valve chamber 203 is conical. The regulating actuator 100 includes a diaphragm chamber 101, a diaphragm 102, a valve stem 103, and a spring. The valve assembly includes a spring 104, a valve core 105, and a connecting pipe 106. A diaphragm 102 is disposed in the middle of the diaphragm chamber 101, dividing it into an upper chamber 107 and a lower chamber 108. The upper end of the valve stem 103 is connected to the diaphragm 102, and the lower end of the valve stem 103 extends into the valve cavity 203. The lower end of the valve stem 103 fixes the valve core 105, and the bottom of the valve core 105 is adapted to the shape of the bottom of the valve cavity 203. Both ends of the connecting pipe 106 are connected to the valve rear chamber 203. 2 and upper chamber 107; a pressure plate 109 is provided on the valve stem 103, and a spring 104 is sleeved on the valve stem 103, with the upper end of the spring 104 in contact with the pressure plate 109. The connecting seat is an end cap 300, with a circular hole 301 in the middle of the end cap 300 for the valve stem to pass through. A short tube 302 is provided inside the end cap 300, and the short tube 302 is concentrically arranged with the end cap 300. A baffle 204 is fixed to the upper wall of the valve chamber 203. The baffle 204 is annular. The valve chamber 203 has a short cylinder 205 concentrically fixed to its upper end. The short cylinder 205 has external threads on its outer side, and the end cap 300 has corresponding internal threads on its inner side. The end cap 300 is threadedly connected to and fixes the short cylinder 205. A gasket 206 and a sealing ring 207 are sequentially arranged on the baffle 204. The lower end face of the short tube 302 presses against the sealing ring 207. The lower end of the spring 104 is connected to the upper end of the end cap 300. The valve stem 103 and the sealing ring 207 are slidably engaged. By configuring the stiffness of the spring 104, when the pressure in the valve chamber 202 exceeds the stiffness of the spring 104, water enters the upper chamber through the connecting pipe, compressing the spring 104 and causing the valve stem 103 and valve core 105 to move downwards synchronously. This reduces the flow area of ​​the valve chamber 203, decreases the water flow rate, and thus reduces the pressure, ensuring stable pressure and achieving an adaptive balance between flow rate and pressure. The threaded connection simplifies the assembly and disassembly process. No tools are needed; the connection or replacement can be completed by manually tightening the screw. The structure is simple.

[0022] Furthermore, the inner diameter of the short tube 302 is the same as the diameter of the circular hole 301; the outer diameter of the short tube 302 matches the inner diameter of the short cylinder 205; the inner diameter of the baffle 204 is larger than the outer diameter of the valve core 105; and the inner diameter of the gasket 206 is the same as the diameter of the circular hole 301. This ensures that when the connecting seat 300 and the short cylinder 205 are connected by threads, the bottom of the short tube 302 can compress the sealing ring 207, enhancing the valve body's sealing performance. Simultaneously, the inner diameter of the baffle 204 is larger than the outer diameter of the valve core 105, ensuring that the valve core 105 can be removed from the short cylinder 205, facilitating the replacement of the valve core 105 or the entire regulating actuator, ensuring the service life of the device, and facilitating inspection and maintenance.

[0023] Furthermore, an annular block 303 is concentrically provided on the upper end face of the end cap 300. The outer diameter of the annular block 303 is the same as the inner diameter of the spring 104, and the lower end of the spring 104 is sleeved on the annular block 303. This provides a stable mounting position for the lower end of the spring, preventing the spring from shifting or loosening, and improving the stability of the spring's operation.

[0024] Furthermore, the connecting pipe 106 includes an upper pipe 110, a lower pipe 111, and a connecting cover 112. The upper pipe 110 is an L-shaped pipe, with one end connected to the upper chamber 107. The outer side wall of the other end of the upper pipe 110 is provided with an annular end plate 113. The connecting cover 112 includes a cover plate 114 and a cover wall 115. The cover plate 114 is fixed to the upper end of the cover wall 115. The cover plate 114 is provided with a first circular hole 116, through which the cover plate 114 is fitted. On the outer side of the upper pipe 110, the outer diameter of the annular end plate 113 is larger than the diameter of the first circular hole 116. The cover plate 114, facing the annular end plate 113, is also provided with a sealing groove 117. The sealing groove 117 is annular, and a first sealing ring 118 is provided within it to ensure a tight connection. The lower end of the lower pipe 111 connects to the valve rear chamber 202. The outer side wall of the upper end of the lower pipe 111 is provided with a first thread, and the inner side of the cover wall 115 is provided with a corresponding second thread. This ensures that the upper pipe 110 and the lower pipe 111 can be connected by threads using the connecting cover 112. The detachable connecting pipe 106 provides a simple connection structure, facilitates disassembly and replacement, aids maintenance, and ensures the system's lifespan.

[0025] Furthermore, an annular baffle 119 is provided on the outer side wall near the upper end of the lower tube 111, and a sealing gasket 120 is provided on the upper surface of the annular baffle 119. During connection, the cover plate 114 of the connecting cover presses against the sealing ring 117, and the cover wall 115 presses against the sealing gasket 120 to ensure the sealing of the upper and lower ends of the connecting cover, ensuring the sealing of the connecting cover of the connecting tube and preventing leakage.

[0026] Furthermore, a mounting groove 121 is provided near the lower end of the valve stem 103. The mounting groove 121 is annular, and a circular groove 122 is concentrically provided on the upper surface of the valve core 105. The groove wall of the circular groove 122 is provided with annular groove protrusions 123. The valve core 105 can be made of elastic material to ensure that the valve core 105 is detachably fixed to the valve stem 103 for easy replacement and maintenance.

[0027] Furthermore, flanges 208 are respectively provided at the left and right ends of the valve body 200, and through holes 209 are provided on the flanges 208. This ensures that the connection between the flow and pressure regulating device and the pipeline is simpler and more convenient, improving installation efficiency.

[0028] Furthermore, the membrane chamber 101 is composed of two opposing housings connected by bolts, facilitating disassembly of the chamber for inspection and replacement of the internal diaphragm 102, thus reducing the maintenance difficulty of diaphragm 102 malfunctions. The edges of the diaphragm 102 are pressed and fixed between the upper and lower housings, ensuring the sealing of the membrane chamber 101 and preventing liquid leakage from the upper chamber 107. The lower housing has a valve stem hole for the valve stem 103 to pass through; the valve stem hole is larger than the valve stem to ensure normal sliding of the valve stem 103 and achieve flow and pressure regulation.

[0029] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A building zoned water supply pressure stabilization system with adjustable flow and pressure, characterized in that: Includes water tank, Y-type filter, transfer pump, pressure tank, pressure reducing valve, main pipe and zoned water supply pipes; The zoned water supply pipe includes a high-level water supply pipe, a middle-level water supply pipe, and a low-level water supply pipe. The main pipe is connected in series with the water tank, the Y-type filter, the delivery pump, and the pressure tank. The end of the main pipe is connected to the high-level water supply pipe. The middle-level water supply pipe and the low-level water supply pipe are connected to the main pipe. Flow and pressure regulating devices are connected to the high-level water supply pipe, the middle-level water supply pipe, and the low-level water supply pipe. Pressure reducing valves are provided on the middle-level water supply pipe and the low-level water supply pipe. The flow and pressure regulating devices are located at the rear end of the pressure reducing valves. The pressure tank is equipped with an air bladder, which is a double-layered air bladder. The main pipe is connected to the air bladder through a first pipe. The flow and pressure regulating device is a self-regulating valve.

2. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 1, characterized in that: A backup pipeline is also provided, which is connected in series with the first delivery pump and the first pressure tank; the backup pipeline is connected in parallel with the delivery pump and the pressure tank.

3. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 1, characterized in that: The flow and pressure regulating device includes a regulating actuator, a valve body, and a connecting seat. The valve body has a communicating chamber, one end of which is a pre-valve chamber, the other end is a post-valve chamber, and the middle is a valve chamber. The regulating actuator includes a diaphragm chamber, a diaphragm, a valve stem, a spring, a valve core, and a connecting pipe. The diaphragm is located in the middle of the diaphragm chamber, dividing it into an upper chamber and a lower chamber. The upper end of the valve stem is connected to the diaphragm, and the lower end of the valve stem extends into the valve chamber. The lower end of the valve stem fixes the valve core. The two ends of the connecting pipe are respectively connected to the post-valve chamber and the upper chamber. A pressure plate is provided on the valve stem, and the spring is sleeved on the valve stem. The upper end of the valve stem is attached to the pressure plate. The connecting seat is an end cap. The end cap has a round hole in the middle for the valve stem to pass through. The end cap has a short tube inside. The short tube is concentrically arranged with the end cap. A baffle is fixed to the upper wall of the valve cavity. The baffle is annular. A short cylinder is concentrically fixed to the upper end of the valve cavity. The short cylinder has an external thread on its outer side. The end cap has a corresponding internal thread. The end cap is fixed to the short cylinder by threaded connection. A gasket and a sealing ring are arranged in sequence on the baffle. The lower end of the short tube abuts against the sealing ring. The lower end of the spring is connected to the upper end of the end cap. The valve stem and the sealing ring are slidably engaged.

4. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 3, characterized in that: The inner diameter of the short tube is the same as the diameter of the circular hole; the outer diameter of the short tube matches the inner diameter of the short cylinder; the inner diameter of the baffle is larger than the outer diameter of the valve core; and the inner diameter of the gasket is the same as the diameter of the circular hole.

5. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 3, characterized in that: The upper end face of the end cap is concentrically provided with an annular block, the outer diameter of the annular block is the same as the inner diameter of the spring, and the lower end of the spring is sleeved on the annular block.

6. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 3, characterized in that: The connecting pipe includes an upper pipe, a lower pipe, and a connecting cover. The upper pipe is an L-shaped pipe, with one end connected to the upper chamber. The outer side wall of the other end of the upper pipe is provided with an annular end plate. The connecting cover includes a cover plate and a cover wall. The cover plate is fixed to the upper end of the cover wall. The cover plate is provided with a first circular hole. The cover plate is fitted onto the outside of the upper pipe through the first circular hole. The outer diameter of the annular end plate is larger than the diameter of the first circular hole. The side of the cover plate facing the annular end plate is also provided with a sealing groove. The sealing groove is annular and a first sealing ring is provided in the sealing groove. The lower end of the lower pipe is connected to the valve rear chamber. The outer side wall of the upper end of the lower pipe is provided with a first thread, and the inner side of the cover wall is provided with a corresponding second thread.

7. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 6, characterized in that: An annular baffle is provided on the outer side wall near the upper end of the lower tube, and a sealing gasket is provided on the upper surface of the annular baffle.

8. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 1, characterized in that: A mounting groove is provided near the lower end of the valve stem. The mounting groove is annular. A circular groove is provided concentrically on the upper surface of the valve core. The groove wall is provided with annular groove protrusions.

9. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 3, characterized in that: The valve body is provided with flanges at both the left and right ends, and the flanges are provided with through holes.

10. The adjustable flow and pressure building zone water supply pressure stabilization system as described in claim 3, characterized in that: The membrane chamber is composed of two opposing shells connected by bolts, and the edge of the membrane is pressed and fixed between the upper and lower shells.

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