Intelligent variable frequency constant pressure water supply equipment

Abstract

The application relates to the technical field of variable-frequency constant-pressure water supply, in particular to an intelligent variable-frequency constant-pressure water supply equipment, which comprises a tank body provided with an air storage chamber and a water storage chamber, the air storage chamber and the water storage chamber are separated through a diaphragm, an isolation device provided with a blocking plate is arranged in the water storage chamber, the isolation device pushes the blocking plate to be attached to the tank body according to the internal pressure of the air storage chamber, so that the water storage chamber is divided into an isolation chamber and a constant-pressure chamber, the isolation chamber can be used for collecting and storing water sediments, a blowdown pipe is connected to the isolation chamber, and a protection assembly is arranged on the blocking plate and the tank body. The application can automatically collect and isolate the suspended matters in water, so that the equipment can automatically blow down during the operation process, thereby avoiding the problems that the water supply equipment is damaged or harmful substances affect people's health due to the low frequency of artificial maintenance and the deposition of water scale.

Description

Technical Field

[0001] This invention relates to the field of variable frequency constant pressure water supply technology, specifically to an intelligent variable frequency constant pressure water supply device. Background Technology

[0002] Intelligent variable frequency constant pressure water supply has advantages such as high efficiency, reliability, energy saving, environmental protection and stability. It is an important development direction of the modern water supply industry and will gradually replace the traditional pressure regulation method to achieve more intelligent and convenient effects, and realize more automated and economical water supply equipment.

[0003] Intelligent variable frequency constant pressure water supply uses modern control technology and variable frequency technology to control the speed of the water pump, so that it can maintain a stable water pressure output under different water supply needs. However, when the water supply pipeline is too long or there are problems such as pipeline height difference, the stability of constant pressure water supply may be affected. In this case, a pressure tank needs to be installed in the constant pressure water supply pipeline to buffer pressure fluctuations and improve the stability of the system.

[0004] During operation, when water supply is interrupted at certain times, the water pump in the intelligent variable frequency constant pressure water supply system also stops supplying water. At this time, the water inside the entire water supply system is stagnant, causing suspended solids to settle at the bottom of the pressure tank. Over time, this process leads to scale buildup inside the pressure tank. Once a certain amount of scale has accumulated, the water volume inside the pressure tank decreases, reducing the tank's buffering effect and causing blockages in the water supply pipes. Furthermore, the scale buildup can corrode the pressure tank, leading to leaks and damage, thus affecting the water supply system's operation. Therefore, the pressure tank needs to be cleaned regularly to prevent excessive scale buildup. When intelligent variable frequency constant pressure water supply systems are used in older residential areas, due to the aging... The aging water supply pipes in older residential areas cause rust to seep into the pipes as water passes through them, increasing water hardness and accelerating scale buildup in pressure tanks. Furthermore, the lack of property management in these areas leads to insufficient maintenance of the pressure tanks, resulting in excessive scale buildup and frequent leaks that disrupt residents' water supply. When the scale contains significant amounts of rust, it reacts with nitrogenous inorganic salts in the water to form harmful nitrites, contaminating clean tap water after it passes through the pressure tanks and potentially causing health problems for residents who drink it.

[0005] Therefore, in order to prevent water supply equipment malfunctions or the generation of harmful substances that affect people's health due to excessive scale buildup inside the pressure tank, an intelligent variable frequency constant pressure water supply device is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent variable frequency constant pressure water supply device to prevent scale buildup in the pressure tank from causing water supply equipment malfunctions and water safety accidents. By setting a self-cleaning process for the pressure tank, the device can automatically clean the suspended matter deposited inside the pressure tank in a timely manner, thereby avoiding scale buildup inside the pressure tank.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An intelligent variable frequency constant pressure water supply device includes a tank with an air storage chamber and a water storage chamber, which are separated by a diaphragm. The tank has an inlet pipe and an outlet pipe communicating with the water storage chamber. A step is provided on the tank, the upper surface of which slopes downwards along the inner wall of the tank. The step divides the water storage chamber into an isolation chamber and a pressure stabilizing chamber. The isolation chamber is located at the bottom of the tank. A drain pipe communicating with the isolation chamber is located below the tank. An isolation device with a baffle plate is provided inside the water storage chamber. When the internal air pressure in the gas storage chamber is lower than the set pressure, the device pulls the baffle plate to fit against the step, separating the isolation chamber from the pressure stabilizing chamber. When the internal air pressure in the gas storage chamber is higher than the set pressure, the isolation device pushes the baffle plate away from the step, connecting the isolation chamber to the pressure stabilizing chamber. The baffle plate and the tank are jointly provided with a protective component to ensure the cleanliness of the contact surface between the baffle plate and the step. The protective component covers the contact surface between the baffle plate and the step when the baffle plate separates from the step, and automatically exposes the contact surface between the baffle plate and the step when the baffle plate moves towards the tank.

[0009] By allowing suspended solids to settle when the water flow is still, they settle into the isolation chamber of the pressure tank. When water is used, the internal pressure of the pressure tank decreases, controlling the isolation device. This device then uses a baffle plate to isolate the suspended solids deposited inside the isolation chamber. At this point, opening the drain pipe allows the deposits to be discharged to the outer wall of the pressure tank, thus preventing scale buildup inside the pressure tank. This extends the lifespan of the pressure tank and avoids water pollution caused by rust buildup. To prevent scale buildup on the contact surface between the baffle plate and the tank body, which could affect the separation effect, a protective component is installed. When the baffle plate separates from the tank body, the contact surface is shielded by the protective component. When the baffle plate moves towards the tank body, the protective component exposes the contact surface, thus preventing the contact structure of the baffle plate from affecting its blocking effect when the contact surface is not in contact with the tank body.

[0010] Preferably, the isolation device includes a sleeve welded inside the tank body, a sleeve rod slidably installed inside the sleeve, a baffle plate disposed on the sleeve rod, the baffle plate being umbrella-shaped with an arc-shaped upper surface, a step on the tank body that cooperates with the baffle plate, a tension spring connecting the sleeve rod and the sleeve, the inside of the sleeve communicating with a gas storage chamber via an air pipe, and a pressure relief assembly connected to the sleeve rod. The pressure relief assembly can release the negative pressure inside the isolation chamber by supplying water to the isolation chamber after the baffle plate and the step are engaged.

[0011] When water usage stops, the internal pressure of the tank gradually increases, compressing the gas inside the storage chamber through the diaphragm. This causes the gas pressure inside the storage chamber to also gradually increase. When the gas pressure inside the storage chamber increases, the thrust of the pressure on the sleeve rod exceeds the tension of the spring. At this point, the sleeve rod opens the baffle plate. Since the water flow is still, suspended solids in the water will gradually settle to the bottom of the tank. When someone uses water, the internal pressure of the pressure tank gradually decreases. The tension of the spring exceeds the thrust of the compressed air, causing the sleeve rod to contract under the action of the spring, making the baffle plate fit against the tank. This isolates the suspended solids at the bottom of the pressure tank. The drain pipe can then be opened to discharge the suspended solids, thus preventing the formation of scale and the discharge of suspended solids containing high levels of nitrite after deposition. This prevents water supply system malfunctions or the generation of harmful substances that could affect people's health due to excessive scale buildup inside the pressure tank. During use, to prevent the baffle plate from failing to return to its original position due to water pressure, a pressure relief component is installed to prevent the isolation chamber from remaining under negative pressure for extended periods.

[0012] Preferably, the barrier plate has multiple through holes on its upper surface, and a baffle is hinged to the barrier plate above the through holes. The baffle is made of a material with a density greater than that of water and a density close to that of water.

[0013] By creating through-holes in the baffle plate, water can be discharged directly through the through-holes when the baffle plate moves, preventing excessive water flow inside the isolation chamber caused by the movement of the baffle plate. This prevents sediment inside the isolation chamber from floating up again and entering the user's water supply. The baffle is designed to always block the through-holes. When the baffle plate moves, it will open under the resistance of the water, thus opening the through-holes. After the baffle plate stops moving, the baffle will automatically fall down under the action of gravity and block the through-holes again. At this time, the baffle will not open again due to pressure. The baffle is made of a material with a density greater than that of water but close to that of water, which can control the sinking speed of the baffle and allow it to flip upward at a larger angle under the action of water resistance, making the opening width of the through-hole wider. This prevents the problem of suspended sediment from floating up again due to the turbulence of water flow inside the isolation chamber caused by the movement of the baffle plate.

[0014] Preferably, the pressure relief assembly includes a pressure relief channel disposed on the sleeve rod, the pressure relief channel being connected to the isolation chamber and the pressure stabilizing chamber respectively, a nozzle connected to the sleeve rod, the nozzle having multiple nozzles, the multiple nozzles being directed toward the inner wall of the tank and the baffle plate respectively, the sleeve rod including a rotating part and a sliding part, the sliding part being slidably mounted on the sleeve, the rotating part being rotatably mounted on the sliding part, the pressure relief channel being disposed on the rotating part, the rotating part penetrating the baffle plate, and the rotating part having blades disposed inside the pressure stabilizing chamber, the blades being directly opposite the water inlet pipe.

[0015] The pressure relief channel connects the pressure stabilizing chamber and the isolation chamber, thus preventing negative pressure from forming in the isolation chamber. Since the drainage volume of the drain outlet is much greater than the inflow volume of the pressure relief channel, its drainage is not considered. The pressure relief channel is located on the rotating part. Water flow impacts the blades, driving the rotating part to rotate and causing water to spray out from the nozzle, flushing and cleaning scale on the baffle plate and pressure tank. This achieves both pressure relief in the isolation chamber and prevention of scale formation. The blades are positioned relative to the inlet pipe, maximizing the impact of the water flow into the pressure stabilizing chamber on the blades, thus providing greater power to the blades and increasing the rotational speed of the rotating part. This results in more uniform flushing inside the isolation chamber, improving the cleaning effect of the pressure relief assembly.

[0016] Preferably, the diameter of the pressure relief channel is 5.8-11.2 cm, and the sum of the areas of the plurality of nozzles is equal to the cross-sectional area of ​​the pressure relief channel.

[0017] By setting the pressure relief channel to this diameter, the water flow velocity in the pressure relief channel can reach 10m / s. When the water flow reaches 10m / s, it can flush the pressure relief channel and prevent blockage due to scale buildup inside the pressure relief channel. Furthermore, the sum of the areas of the multiple nozzles is equal to the cross-sectional area of ​​the pressure relief channel, which makes the nozzle outlet velocity equal to the water flow velocity inside the pressure relief channel. This allows the water flow to impact the pressure relief tank and baffle plate, preventing scale deposition on the inner wall of the pressure tank and the baffle plate.

[0018] Preferably, the protective assembly includes multiple sliding plates disposed on the barrier plate and the tank body, the multiple sliding plates being in contact with the barrier plate or step, multiple power rods being hinged to the barrier plate and the tank body via torsion springs, a pull rod being fixedly connected to the sliding plate, one end of the pull rod being sleeved onto the power rod and hinged to the sleeve, a push plate being fixedly connected to the end of each power rod, and two opposing push plates cooperating when the barrier plate moves toward the step, the two push plates pushing each other to swing the corresponding power rod toward the center of the tank body, and a second tension spring connected to the pull rod being provided on both the barrier plate and the tank body, the tension direction of the second tension spring being opposite to the contact surface of the barrier plate and the tank body.

[0019] The movement of the baffle plate causes the two power rods to move towards the center of the tank, which in turn drags the sliding plate towards the center of the tank via the pull rod. This exposes the contact surface between the tank and the baffle plate, preventing scale buildup on the contact surface when the tank and the baffle plate separate, thus ensuring the sealing performance of the baffle plate. The second tension spring allows the sliding plate to remain in contact with the baffle plate and the tank even after wear, thereby improving the service life of the sliding plate.

[0020] Preferably, the rotating part has a slot, the sliding part has a pin that cooperates with the slot, the pin density is less than 1.0 g / cm3, and the slot is a non-rotating shape.

[0021] Because the density of the pin is less than that of the slot, when sewage is discharged, the pin loses buoyancy and disengages from the slot. At this time, the rotating part can rotate under the drive of the blade. When sewage discharge stops, the water flows into the isolation chamber, and the pin floats up under the action of buoyancy and engages with the slot. This restricts the rotation of the power unit, avoids water energy loss caused by the long-term rotation of the power unit, and also avoids the rotation of the blade affecting the stability of water pressure.

[0022] Preferably, the pressure relief channel is connected to the slot, and both the slide groove and the slot are provided with guide grooves. The average width of the gap between the slide groove and the pin is set to 2-3 mm.

[0023] The pressure relief mechanism, connected to the slot, allows high-speed water flow from the pressure relief channel into the slot to flush it, preventing scale buildup that could prevent the pin from entering. The water flowing into and out of the slot also flushes the pin, preventing scale buildup. A guide channel on the pin allows water to oscillate, improving the cleaning of the pin and the sliding groove surface. The average width of the gap between the sliding groove and the pin is set to 2-3mm, creating turbulent flow without separation, further enhancing the cleaning of the slot, pin, and sliding groove.

[0024] Preferably, the nozzle is a flexible hose, and a support frame is provided inside the nozzle. One end of the support frame is fixedly connected to the power unit, and the other end is rotatably connected to the sleeve.

[0025] The nozzle uses a flexible hose, which can deform differently depending on the water pressure, thus preventing scale buildup on the nozzle. The support frame prevents the nozzle from deforming and changing the direction of the water flow from the nozzle, which would prevent it from accurately acting on the tank and baffle plate and affecting the cleaning effect of the nozzle.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. By installing an isolation device with a baffle plate inside the tank, which contains an isolation chamber and a pressure stabilizing chamber, when the water is still, the baffle plate is controlled by compressed air inside the pressure tank to connect the isolation chamber and the pressure stabilizing chamber, causing suspended solids in the water to settle inside the isolation chamber. When the water is flowing, the baffle plate is controlled by compressed air inside the pressure tank to separate the isolation chamber and the pressure stabilizing chamber. At this time, the drain pipe can be opened to discharge the suspended solids inside the isolation chamber, thereby preventing the deposition of suspended solids and the formation of scale. This avoids scale buildup in the equipment, which can affect the equipment's lifespan, and also avoids the generation of harmful substances that could affect people's health.

[0028] 2. By installing a pressure relief component with a pressure relief channel, the isolation chamber and the pressure stabilizing chamber can still be connected even after the baffle plate separates them. This prevents negative pressure from forming in the isolation chamber after the drain pipe is closed, thus avoiding the problem of the baffle plate failing to reset. The pressure relief channel is connected to a spray pipe, and the pressure relief component can drive the spray pipe to rotate under the action of water flow inside the pressure stabilizing chamber. This allows the sprayed water to flush away scale inside the isolation chamber, thereby preventing the formation of scale and harmful substances inside the isolation chamber, further improving the service life and safety of the equipment.

[0029] 3. By setting protective components on both the baffle plate and the tank, the movement of the baffle plate ensures that the contact surface between the baffle plate and the tank is covered by the protective components when the baffle plate separates from the tank, and exposed when the baffle plate moves towards the tank. This prevents scale buildup on the contact surface between the baffle plate and the tank, which would affect the sealing performance of the baffle plate and thus avoid significant water waste caused by large leaks during equipment discharge. Attached Figure Description

[0030] Figure 1 This is a partial structural cross-sectional view of the present invention;

[0031] Figure 2 For the present invention Figure 1 Cross-sectional view at point AA;

[0032] Figure 3 For the present invention Figure 2 Enlarged view of a section at point B in the middle;

[0033] Figure 4 For the present invention Figure 2 Enlarged view of a section at point C.

[0034] In the diagram: 1. Tank body; 11. Gas storage chamber; 12. Water storage chamber; 121. Isolation chamber; 122. Pressure stabilizing chamber; 13. Diaphragm; 14. Step; 15. Inlet pipe; 16. Outlet pipe; 2. Isolation device; 21. Baffle plate; 22. Sleeve; 23. Sleeve rod; 231. Rotating part; 2311. Slot; 232. Sliding part; 2321. Slide groove; 2322. Pin; 2323. Guide groove; 24. Tension spring one; 25. Gas pipe; 26. Through hole; 27. Baffle; 3. Protection component; 31. Slide plate; 32. Power rod; 33. Pull rod; 34. Push plate; 35. Tension spring two; 36. Sliding sleeve; 4. Pressure relief component; 41. Pressure relief channel; 42. Nozzle; 421. Nozzle; 43. Blade; 5. Support frame; 6. Sewage pipe. Detailed Implementation

[0035] like Figures 1 to 4 As shown, the details are as follows:

[0036] A smart variable frequency constant pressure water supply device includes a tank 1 with an air storage chamber 11 and a water storage chamber 12. The air storage chamber 11 and the water storage chamber 12 are separated by a diaphragm 13. The water storage chamber 12 is divided into an isolation chamber 121 and a pressure stabilizing chamber 122. An isolation device 2 with a baffle plate 21 is provided inside the water storage chamber 12. The isolation device 2 includes a sleeve 22 installed inside the tank 1. A sleeve rod 23 is slidably installed inside the sleeve 22. The baffle plate 21 is installed on the sleeve rod 23. A step 14 is provided on the tank 1 to cooperate with the baffle plate 21. A tension spring 24 is connected between the sleeve rod 23 and the sleeve 22. The inside of the sleeve 22 is connected to the air storage chamber 11 through an air pipe 25. When all residents in the community stop water supply at the same time, the tank 122 is activated. 1. The internal pressure will gradually increase. When it reaches the set maximum value, the water pump stops operating. At this time, the pressure inside the gas storage chamber 11 also reaches its maximum value. At this time, the thrust of the compressed air on the sleeve rod 23 is greater than the tension of the tension spring 24, thereby pushing the baffle plate 21 to separate from the step 14. Since the water pump is stationary at this time, the water flow inside the tank 1 is also stationary. At this time, the suspended solids in the water will gradually settle into the isolation chamber 121. When the residents of the community start using water, initially only the water flow inside the pressure tank is consumed. At this time, the water flow inside the pressure tank is small and will not carry out the suspended solids settled at the bottom. When the pressure inside the pressure tank decreases to a certain level, the pressure... The sensor detects the internal pressure of the pressure tank and controls the water supply pump to start operating. Before the water supply pump operates, the internal pressure of the air storage chamber 11 decreases. At this time, the thrust of the compressed air on the sleeve rod 23 is less than the tension of the tension spring 24, causing the baffle plate 21 to adhere to the tank body 1. This isolates suspended matter in the isolation chamber 121, preventing suspended matter that has already produced nitrite from entering the user's water outlet with the water flow, thus ensuring the health of the community's water supply. When the water supply pump operates, the drain pipe 6 can be opened to discharge the internal suspended matter, thereby preventing scale formation. The upper surface of the baffle plate 21 is arc-shaped, which can improve the compressive strength of the baffle plate 21 and improve its adhesion to the tank body 1. To withstand greater water pressure, the baffle plate 21 has multiple through holes 26 on its upper part. A baffle 27 is hinged to the baffle plate 21 above the through holes 26. When the baffle plate 21 moves, water can directly drain through the through holes 26, preventing excessive water flow inside the isolation chamber 121 caused by the movement of the baffle plate 21, thus preventing sediment from being stirred up again. After the baffle plate 21 stops moving, the baffle 27 automatically falls under gravity to block the through holes 26 again. At this time, the baffle 27 is under pressure and will not open again. The baffle 27 is made of materials with a density greater than but close to that of water, such as magnesium alloy or carbon fiber composite material. The magnesium alloy density is approximately 1.8 g / cm³. 3 Fiberglass is a lightweight, high-strength metallic material with a density of approximately 1.5-2 g / cm³. 3The high-strength composite material can withstand greater pressure, and because its density is close to that of water, it can easily open to a large angle under the impact of water flow, thus avoiding the problem of the baffle plate 21 moving and causing the water flow inside the isolation chamber 121 to become turbulent and float up again.

[0037] A pressure relief assembly 4 is connected to the sleeve 23. The pressure relief assembly 4 includes a pressure relief channel 41 on the sleeve 23, which is connected to the isolation chamber 121 and the pressure stabilizing chamber 122 respectively. This allows the negative pressure inside the isolation chamber 121 to be released after the drain pipe 6 is opened, thus preventing the baffle plate 21 from failing to reset due to water pressure. A spray pipe 42 is connected to the sleeve 23, which has multiple nozzles 421 facing the inner wall of the tank 1 and the baffle plate 21 respectively. This allows the pressure relief channel 41 to not only relieve pressure but also clean the suspended matter adhering inside the isolation chamber 121, thereby reducing scale formation. The sleeve 23 includes a rotating part 231 and a sliding part 232. The sliding part 232 is slidably mounted on the sleeve 22. The moving part 231 is rotatably mounted on the sliding part 232. The pressure relief channel 41 is set on the moving part 231. The moving part 231 passes through the baffle plate 21 and is located inside the pressure stabilizing chamber 122 with blades 43. In this way, the water flow can drive the moving part 231 of the sleeve rod 23 to rotate, thereby driving the nozzle 42 to rotate. This allows a single nozzle 42 to thoroughly clean the interior of the isolation chamber 121, thereby reducing the number of nozzles 42 and increasing the storage volume of the isolation chamber 121. The blades 43 are directly opposite the water inlet pipe 15, so that the water flow entering from the water inlet pipe 15 can directly act on the blades 43, making the blades 43 generate greater power, thereby increasing the rotation speed of the moving part 231, making the nozzle 42 clean more evenly, and improving the cleaning effect of the pressure relief assembly 4.

[0038] Due to the function of the pressure relief channel 41, the internal pressure of the isolation chamber 121 is the same as that of the pressure stabilizing chamber 122. Therefore, when water is stopped, only water will enter the pressure tank, and the water flow will not cause disturbance to the water flow at the bottom of the tank, nor will it cause suspended matter at the bottom of the water to disperse inside the pressure tank. The pressure relief component 4 can also clean the inside of the isolation chamber 121. Therefore, the opening time of the drain pipe 6 can be set to 3-5 days, and the setting time is set according to the local water quality and the aging of the pipes.

[0039] To ensure the feasibility of the flushing effect, a large water flow is required. High-pressure water guns, commonly used for cleaning scale, have a water flow velocity of 10 m / s. Based on Bernoulli's equation and the continuity equation, the following formula is derived:

[0040] P1 + 1 / 2ρv1² = P2 + 1 / 2ρv2²

[0041] v1A1=v2πr2

[0042] In the formula, r is the diameter of the pressure relief channel 41, P1 is the pressure of the pressure tank, A1 is the area of ​​the pressure tank, ρ is the density of water, v2 is the velocity of water flowing out of the pressure relief channel 41, P2 is the static pressure at the pressure relief channel 41, and v1 is the water flow velocity inside the pressure tank. When the pressure relief component 4 is working, the water flows directly into the residents' homes, so the water flow inside the pressure tank can be considered zero at this time. Solving the above system of equations, we can obtain:

[0043] r=[2A1(P1-P2) / ρ(v2 2 -6 2 )] 1 / 4

[0044] In a typical residential community, the water supply pressure usually needs to be maintained at 0.3 MPa, i.e., P1 = 0.3 MPa = 300,000 Pa. The typical water consumption in a residential community is around 10-30 tons. Under this water consumption, the diameter of the pressure tank is usually 0.7-1 m. Based on the formula for calculating the circumference area, we can obtain:

[0045] A1 = π / 4 x (0.7 - 1) 2 ≈0.38-0.79m 2

[0046] Since the diameter of the pressure tank is much larger than that of the pressure relief channel 41, the flow velocity v1 in the pressure tank and the flow velocity v2 in the pressure relief channel 41 can be considered equal, i.e., v1≈v2. Therefore, substituting into the above formula, we can obtain:

[0047] r≈0.029-0.056m=2.9-5.6cm

[0048] Therefore, when the diameter of the pressure relief channel 41 is 5.8-11.2cm, the water flow velocity in the pressure relief channel 41 can reach 10m / s. When the water flow reaches 10m / s, it can flush the pressure relief channel 41 and prevent the inside of the pressure relief channel 41 from being blocked by scale. In addition, the sum of the areas of the multiple nozzles 421 is equal to the cross-sectional area of ​​the pressure relief channel 41, which can make the outlet velocity of the nozzles 421 equal to the water flow velocity inside the pressure relief channel 41. This allows the water flow to impact the pressure relief tank and the baffle plate 21, preventing scale deposition on the inner wall of the pressure tank and the baffle plate 21.

[0049] A slot 2311 is provided on the rotating part 231, and a sliding groove 2321 is provided on the sliding part 232. A pin 2322 is slidably installed inside the sliding groove 2321. The sliding groove 2321 is connected to the isolation chamber 121. The density of the pin 2322 is less than 1.0 g / cm3. The slot 2311 is a non-rotating body. With this arrangement, when there is water inside the isolation chamber 121, and because the density of the pin 2322 is less than 1.0 g / cm3 and less than the density of water, the pin 2322 will float up under the action of the water and enter the slot 2311. Since the slot 2311 and the pin 2322 are non-rotating bodies, the rotation of the rotating part 231 can be restricted, thereby preventing the blade 43 from rotating constantly. The movement affects the pressure balance of the water supply system and reduces the energy loss of the rotating blade 43. During sewage discharge, as the water inside the isolation chamber 121 is drained, the pin 2322 loses the buoyancy of the water and can disengage from the slot 2311. The blade 43 can then rotate under the action of the water flow. At this time, the isolation chamber 121 is short of water, and the pressure relief component 4 can also clean the inside of the isolation chamber 121, which can play a cleaning role. It is just in time for the cleaning of the isolation chamber 121 during sewage discharge, thereby reducing the energy loss of the water supply system. The shape of the pin 2322 can be set as a hexagon, square, or other polygonal shape, or other shapes, as long as it can restrict the rotation of the rotating part 231. The material of pin 2322 needs to be less dense than water and have high torsional strength. Therefore, aluminum-magnesium alloy or carbon fiber are preferred materials for pin 2322. Of course, other materials with a density less than water and high torsional strength can also be used. The pressure relief channel 41 is connected to the slot 2311, allowing high-speed water to flow into the slot 2311 and slide 2321 to flush the slot 2311, slide 2321, and pin 2322. This prevents scale buildup on the slot 2311, slide 2321, and pin 2322, which could cause the pin 2322 to jam and become unable to float, resulting in continuous rotation and affecting equipment energy consumption. The pin 2322 is provided with a spiral guide groove 2323, which allows water to flow through... When the water flows through the guide channel 2323, a swirling flow is generated, which creates turbulence inside the slot 2311 and the slide 2321, thereby improving the scouring effect on the slot 2311, slide 2321, and pin 2322. To ensure the scouring effect of the water flow on the slot 2311, slide 2321, and pin 2322, the gap between the slide 2321 and the pin 2322 needs to be set reasonably. If the gap is too large, the water flow is a relatively stable horizontal flow with poor scouring effect. If the gap is too small, the water flow will exhibit turbulent separation, and the eddy current intensity will increase, resulting in poor scouring effect as well. To avoid horizontal or turbulent separation of the water flow, the Reynolds number Re needs to be kept within a certain range, which can be calculated using the following formula:

[0050] Re = VW / ν

[0051] Where V is the water flow velocity, W is the width of the gap between the groove 2321 and the pin 2322, and ν is the kinematic viscosity of water (approximately 10). -6 m 2 / s), the Re number exceeds 3×10 4 Turbulent separation will occur if the density is below 2×10⁻⁶. 4 If laminar flow occurs, the gap width between the slide groove 2321 and the pin 2322 is set to 2-3mm. To avoid scale buildup on the nozzle 42, a flexible hose is used for the nozzle 42. The nozzle 42 deforms under water pressure, thus preventing scale from adhering to the nozzle 42 and causing scale deposition. A support frame 5 is installed inside the nozzle 42 to prevent the nozzle 42 from shaking under the action of water flow. The support frame 5 also allows the nozzle 42 to rotate more stably, thereby improving the cleaning effect of the pressure relief component 4 on the interior of the isolation chamber 121. The nozzle 42 is preferably made of polyurethane, which is a material with high hardness and strength, and good pressure resistance and corrosion resistance.

[0052] Considering the sealing between the baffle plate 21 and the tank 1, if leakage occurs between the baffle plate 21 and the solid, a large amount of water will flow out during sewage discharge, resulting in water waste. Furthermore, localized leakage between the baffle plate 21 and the tank 1 will cause uneven stress on the baffle plate 21, leading to deformation and potential damage. Therefore, a protective component 3 is provided on both the baffle plate 21 and the tank 1. This protective component 3 includes multiple sliding plates 31 mounted on the baffle plate 21 and the tank 1, which are designed to fit against the baffle plate 21 or the step 14. The barrier plate 21 and the tank body 1 are fitted together. Multiple power rods 32 are hinged to the barrier plate 21 and the tank body 1 via torsion springs. A pull rod 33 is connected to the slide plate 31. One end of the pull rod 33 is sleeved onto the power rod 32 through a sliding sleeve 36, and the other end of the pull rod 33 is hinged to the sliding sleeve 36. Each end of the power rod 32 is connected to a push plate 34. Two opposing push plates 34 contact each other when the barrier plate 21 moves toward the step 14. After the push plates 34 contact each other, they push the corresponding power rod 32 toward the center of the tank body 1. When the residents of the community stop using water, the barrier plate 21 and the tank body 1 are closed. When the plates separate, the power rod 32 returns to its original position under the action of the torsion spring. The pull rod 33 then pushes the sliding plate 31 to move, causing the sliding plate 31 to fully conform to the contact surface between the barrier plate 21 and the tank body 1. This prevents scale buildup on the contact surface between the barrier plate 21 and the tank body 1, which could affect the sealing of the barrier plate 21 and lead to leakage. When users in the community use water, the barrier plate 21 moves towards the tank body 1. At this time, the power rods 32, respectively installed on the tank body 1 and the barrier plate 21, interfere with each other, causing the two push plates 34 to contact each other and push the power rod 32 to swing towards the center of the tank body 1. This, through the pull rod 33, allows the plate to move towards the center of the tank body 1. Rod 33 drives slide plate 31 to move towards the center of tank 1, thereby avoiding affecting the fit between baffle plate 21 and step 14. Both baffle plate 21 and tank 1 are equipped with tension spring 25 connected to rod 33. The tension direction of tension spring 25 is opposite to the fit surface of baffle plate 21 and tank 1. The tension spring 25 can always pull rod 33, so that slide plate 31 can still fit the fit surface of baffle plate 21 and tank 1 even after wear, thereby improving the service life of protective component 3, thus improving the overall service life of equipment and reducing equipment maintenance costs.

[0053] 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. An intelligent variable frequency constant pressure water supply device, comprising a tank (1) having an air storage chamber (11) and a water storage chamber (12), wherein the air storage chamber (11) and the water storage chamber (12) are separated by a diaphragm (13), and the tank (1) is provided with an inlet pipe (15) and an outlet pipe (16) communicating with the water storage chamber (12), characterized in that, The tank (1) is provided with a step (14), the upper surface of which slopes downward along the inner wall of the tank (1). The step (14) divides the water storage chamber (12) into an isolation chamber (121) and a pressure stabilizing chamber (122). The isolation chamber (121) is located at the bottom of the tank (1). A drain pipe (6) communicating with the isolation chamber (121) is provided below the tank (1). The water storage chamber (12) is provided with an isolation device (2) equipped with a baffle plate (21). When the air pressure inside the gas storage chamber (11) is lower than the set pressure, the isolation device (2) pulls the baffle plate (21) and... The step (14) is fitted together to separate the isolation chamber (121) from the pressure stabilizing chamber (122). When the gas pressure inside the gas storage chamber (11) is greater than the set pressure, the isolation device (2) pushes the baffle plate (21) away from the step (14) to connect the isolation chamber (121) with the pressure stabilizing chamber (122). The baffle plate (21) and the tank (1) are jointly provided with a protective component (3) to ensure the cleanliness of the mating surface of the baffle plate (21) and the step (14). The protective component (3) covers the mating surface of the baffle plate (21) and the step (14) when the baffle plate (21) and the step (14) are separated.

2. The intelligent variable frequency constant pressure water supply equipment according to claim 1, characterized in that: The isolation device (2) includes a sleeve (22) disposed inside the tank (1). A sleeve rod (23) is slidably installed inside the sleeve (22). A baffle plate (21) is disposed on the sleeve rod (23). The baffle plate (21) is umbrella-shaped, and the upper surface of the baffle plate (21) is arc-shaped. A tension spring (24) is connected between the sleeve rod (23) and the sleeve (22). The sleeve (22) is connected to the gas storage chamber (11) through a gas pipe (25). A pressure relief assembly (4) is connected to the sleeve rod (23). The pressure relief assembly (4) can supply water to the isolation chamber (121) after the baffle plate (21) and the step (14) are engaged, so as to release the negative pressure inside the isolation chamber (121). Multiple through holes (26) are opened above the baffle plate (21). A baffle plate (27) is hinged above the through holes (26) of the baffle plate (21).

3. The intelligent variable frequency constant pressure water supply equipment according to claim 2, characterized in that: The pressure relief assembly (4) includes a pressure relief channel (41) disposed on a sleeve (23), the pressure relief channel (41) being connected to an isolation chamber (121) and a pressure stabilizing chamber (122) respectively. A nozzle (42) connected to the pressure relief channel (41) is attached to the sleeve (23), the nozzle (42) having multiple nozzles (421) facing the inner wall of the tank (1) and the baffle plate (21) respectively. The sleeve (23) includes a rotating part (231) and a... The sliding part (232) is slidably mounted on the sleeve (22), the rotating part (231) is rotatably mounted on the sliding part (232), the pressure relief channel (41) is provided on the rotating part (231), the rotating part (231) penetrates the baffle plate (21), and the rotating part (231) is provided with a blade (43) at one end of the pressure stabilizing chamber (122). The blade (43) is directly opposite the water inlet pipe (15) when the baffle plate (21) and the step (14) are in contact.

4. The intelligent variable frequency constant pressure water supply equipment according to claim 3, characterized in that: The rotating part (231) has a slot (2311) and the sliding part (232) has a groove (2321). A pin (2322) that mates with the slot (2311) is slidably installed inside the groove (2321). The groove (2321) is connected to the isolation chamber (121). The density of the pin (2322) is less than 1.0 g / cm3. The slot (2311) is a non-rotating shape.

5. The intelligent variable frequency constant pressure water supply equipment according to claim 3, characterized in that: The pressure relief channel (41) has a diameter of 5.8-11.2 cm, and the sum of the areas of the plurality of nozzles (421) is equal to the cross-sectional area of ​​the pressure relief channel (41).

6. The intelligent variable frequency constant pressure water supply equipment according to claim 2, characterized in that: The protective component (3) includes multiple sliding plates (31) disposed on the barrier plate (21) and the tank body (1). The multiple sliding plates (31) are in contact with the barrier plate (21) or the step (14). Multiple power rods (32) are hinged to the barrier plate (21) and the tank body (1) by torsion springs. A pull rod (33) is fixedly connected to the sliding plate (31). One end of the pull rod (33) is sleeved onto the power rod (32) through a sliding sleeve (36), and the pull rod (33) is hinged to the sliding sleeve (36). On the power rod (32), push plates (34) are fixedly connected to the ends of the power rod (32), and the two push plates (34) cooperate when the barrier plate (21) moves toward the step (14). After the two push plates (34) cooperate, they push the corresponding power rod (32) to swing toward the center of the tank (1). The barrier plate (21) and the tank (1) are both provided with tension springs (35) connected to the pull rod (33), and the tension direction of the tension springs (35) is opposite to the contact surface of the barrier plate (21) and the tank (1).

7. The intelligent variable frequency constant pressure water supply equipment according to claim 4, characterized in that: The pressure relief channel (41) is connected to the slot (2311). Multiple spiral guide grooves (2323) are provided on both the slide groove (2321) and the slot (2311). The average width of the gap between the slide groove (2321) and the pin (2322) is set to 2-3 mm.

8. The intelligent variable frequency constant pressure water supply equipment according to claim 3, characterized in that: The nozzle (42) is a flexible hose. A support frame (5) is provided inside the nozzle (42). One end of the support frame (5) is fixedly connected to the power unit, and the other end is rotatably connected to the sleeve (22).

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