Tank-type stacked pressure variable frequency secondary water supply equipment

Abstract

This utility model discloses a tank-type stacked pressure-free variable frequency secondary water supply device, relating to the technical field of water supply equipment. It includes a flow stabilizing tank, a pump assembly, a pressure stabilizing tank, and a detection assembly. The flow stabilizing tank is connected to the equipment's inlet pipe. The pump assembly is connected to the outlet pipe of the flow stabilizing tank and includes multiple pump units, each independently frequency-controlled, pumping water to the outlet pipe. The pressure stabilizing tank is connected to the outlet pipe and used to balance water pressure fluctuations. The pressure stabilizing tank includes a shell and multiple air chambers, each with a different internal pressure. The detection assembly, located on the outlet pipe, includes a pressure sensor and a pressure switch. The pressure sensor detects water pressure changes on the outlet pipe, and the pressure switch controls the start and stop of the pump units. The technical solution provided by this utility model aims to solve the problem of insufficient capacity of traditional large-capacity single-chamber tanks to cope with high-frequency pressure fluctuations, ensuring a stable water supply.

Description

Technical Field

[0001] This utility model relates to the field of water supply equipment technology, and in particular to a tank-type stacked pressure variable frequency secondary water supply equipment. Background Technology

[0002] In municipal pipe networks or at the user end, even minor changes in flow rate can trigger high-frequency pressure fluctuations. Specific examples include turning on and off a single faucet and flushing a toilet. These seemingly ordinary operations actually change the water flow rate in the pipes within a short period. According to fluid mechanics principles, instantaneous changes in flow rate disrupt the existing pressure balance, resulting in pressure fluctuations. The frequency of high-frequency pressure fluctuations indicates that these pressure changes are relatively rapid and frequent. Traditional large-capacity single-chamber tanks have limitations in handling these high-frequency pressure fluctuations. This is mainly due to two inherent characteristics:

[0003] Water has high inertia: Large-volume single-chamber tanks store a large amount of water. According to Newton's first law, the greater the mass of an object, the greater its inertia. Therefore, the water inside the tank is unable to quickly change its state of motion when faced with rapidly changing pressure, and cannot respond to pressure changes in a timely manner.

[0004] Airbag response lag: The airbag in the single-chamber tank is originally used to regulate pressure, but because its response speed cannot keep up with the rhythm of high-frequency pressure fluctuations, it cannot make corresponding adjustments at the moment of pressure fluctuation, and thus cannot effectively absorb these disturbances.

[0005] Traditional large-capacity single-chamber tanks cannot quickly absorb disturbances from high-frequency pressure fluctuations, resulting in continuous fluctuations in the outlet water pressure. These continuous pressure fluctuations can have various adverse effects on water-using equipment and the entire water supply system. Utility Model Content

[0006] The main purpose of this invention is to propose a tank-type stacked pressure-free variable frequency secondary water supply device, which aims to solve the problem of insufficient capacity of traditional large-capacity single-chamber tanks to cope with high-frequency pressure fluctuations and ensure stable water supply.

[0007] To achieve the above objectives, this utility model proposes a tank-type pressure-reducing variable frequency secondary water supply device, comprising:

[0008] A flow stabilizer tank is used to connect to the equipment's water inlet pipe;

[0009] A water pump assembly, connected to the outlet pipe of the flow stabilizer tank, includes multiple water pump units, each of which is independently frequency-controlled and pumps water to the outlet pipe.

[0010] A pressure stabilizing tank, connected to the water outlet pipe and used to balance water pressure fluctuations, includes a shell and multiple air chambers, each air chamber having a different internal pressure within the shell; and...

[0011] The detection component, installed on the water outlet pipe, includes a pressure sensor and a pressure switch. The pressure sensor is used to detect changes in water pressure on the water outlet pipe, and the pressure switch is used to control the start and stop of the water pump unit.

[0012] In one embodiment, the plurality of airbags may be integrally formed so that the plurality of airbags form an air mass, and the pressure is different at at least two points on the outer peripheral wall of the air mass.

[0013] In one embodiment, the plurality of airbags includes at least a first airbag, a second airbag, and a third airbag, wherein the pressure of the first airbag is less than that of the second airbag and less than that of the third airbag.

[0014] In one embodiment, the first airbag, the second airbag, and the third airbag are sequentially and movably stacked within the housing from bottom to top.

[0015] In one embodiment, a partition is provided between two adjacent airbags.

[0016] In one embodiment, a rolling structure is provided on the outer peripheral side of the partition, and the partition contacts the inner wall of the housing through the rolling structure;

[0017] Furthermore, the partition plate has through holes.

[0018] In one embodiment, the airbag is connected to an inflation device for adjusting the pressure inside the airbag.

[0019] In one embodiment, a connecting pipe is provided between two adjacent airbags, and an electromagnetic valve and a pump body are provided on the connecting pipe. The electromagnetic valve is used to control the opening and closing of the connecting pipe, and the pump body is used to control the transfer of gas between adjacent airbags.

[0020] In one embodiment, a drain outlet is provided at the bottom of the pressure stabilizing tank, and a water quality detector is provided inside the pressure stabilizing tank to monitor water quality changes in real time.

[0021] In one embodiment, a spray nozzle is provided on the top of the pressure stabilizing tank.

[0022] The technical solution of this utility model uses a flow stabilizer connected to the water inlet pipe of the equipment. It can buffer and regulate the water flow entering the equipment, stabilizing the flow rate and pressure of the incoming water. When the municipal water supply pressure or flow rate fluctuates, the flow stabilizer can play a certain buffering role, reducing the direct impact of these fluctuations on the operation of subsequent water pump components and pressure stabilizing tanks, thus providing a basic guarantee for the stable operation of the entire water supply system.

[0023] The pressure stabilizing tank is equipped with multiple air chambers with varying internal pressures. When water pressure fluctuates in the outlet pipe, the air chambers at different pressures respond accordingly. For example, when the water pressure suddenly increases, the air chamber with the lower pressure is compressed first to absorb some of the pressure energy; if the pressure continues to rise, other air chambers with slightly higher pressures will also participate in the adjustment. This synergistic effect of multiple air chambers allows the pressure stabilizing tank to respond more flexibly and quickly to high-frequency pressure fluctuations, providing stronger pressure regulation capabilities than traditional single-chamber tanks. The pump assembly includes multiple pump units, each capable of independent frequency conversion control. Pressure sensors in the detection assembly monitor water pressure changes in the outlet pipe in real time and feed the information back to the control system. When water pressure fluctuates, the control system can precisely adjust the operating frequency and power of each pump unit according to the actual pressure situation. For example, during peak water usage periods, when pressure drops, the control system can increase the operating frequency of some or all pump units to increase water flow and pressure; during off-peak periods, it can reduce the number of operating pump units or lower their operating frequency to reduce excessively high water pressure. This precise frequency conversion control can respond promptly to pressure changes, further ensuring stable water supply pressure. The pressure sensor in the detection component continuously monitors the water pressure in the outlet pipe, providing accurate data support for the frequency conversion control of the water pump component. The pressure switch plays a dual role; when the water pressure exceeds a certain range, the pressure switch can directly control the start and stop of the water pump, preventing damage to the equipment and water supply system caused by abnormal pressure. Through the coordinated work of the pressure sensor and pressure switch, water pressure fluctuations can be captured in real time, and corresponding control actions can be taken quickly to ensure that the water supply system is always in a stable operating state. In summary, this utility model, through the multi-bladder design of the pressure stabilizing tank, the independent frequency conversion control of the water pump component, the real-time monitoring and control of the detection component, and the stable water inlet function of the flow stabilizing tank, effectively improves the ability of the water supply equipment to cope with high-frequency pressure fluctuations, ensuring a stable water supply. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the tank-type stacked negative pressure variable frequency secondary water supply equipment provided by this utility model;

[0026] Figure 2 for Figure 1Another structural diagram of the medium-tank stacked pressure-free variable frequency secondary water supply equipment;

[0027] Figure 3 for Figure 1 Schematic diagram of the internal structure of the medium-pressure stabilizer tank;

[0028] Figure 4 for Figure 3 A schematic diagram of the internal structure of the medium-pressure stabilizer tank.

[0029] Explanation of icon numbers:

[0030] 100. Tank-type stacked pressure variable frequency secondary water supply equipment;

[0031] 1. Flow stabilizer tank;

[0032] 2. Water pump assembly; 21. Water pump unit;

[0033] 3. Pressure stabilizing tank; 31. Shell; 32. First airbag; 33. Second airbag; 34. Third airbag; 35. Baffle; 36. Connecting pipe; 37. Solenoid valve; 38. Pump body; 39. Water quality detector;

[0034] 4. Detection components; 41. Pressure sensor; 42. Pressure switch.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] In municipal pipe networks or at the user end, even minor changes in flow rate can trigger high-frequency pressure fluctuations. Specific examples include turning on and off a single faucet and flushing a toilet. These seemingly ordinary operations actually change the water flow rate in the pipes within a short period. According to fluid mechanics principles, instantaneous changes in flow rate disrupt the existing pressure balance, resulting in pressure fluctuations. The frequency of high-frequency pressure fluctuations indicates that these pressure changes are relatively rapid and frequent. Traditional large-capacity single-chamber tanks have limitations in handling these high-frequency pressure fluctuations. This is mainly due to two inherent characteristics:

[0040] Water has high inertia: Large-volume single-chamber tanks store a large amount of water. According to Newton's first law, the greater the mass of an object, the greater its inertia. Therefore, the water inside the tank is unable to quickly change its state of motion when faced with rapidly changing pressure, and cannot respond to pressure changes in a timely manner.

[0041] Airbag response lag: The airbag in the single-chamber tank is originally used to regulate pressure, but because its response speed cannot keep up with the rhythm of high-frequency pressure fluctuations, it cannot make corresponding adjustments at the moment of pressure fluctuation, and thus cannot effectively absorb these disturbances.

[0042] Traditional large-capacity single-chamber tanks cannot quickly absorb disturbances from high-frequency pressure fluctuations, resulting in continuous fluctuations in the outlet water pressure. These continuous pressure fluctuations can have various adverse effects on water-using equipment and the entire water supply system.

[0043] To solve the above technical problems, such as Figure 1 and Figure 2As shown, the present invention proposes a tank-type stacked pressure-free variable frequency secondary water supply device 100, comprising a flow stabilizing tank 1, a water pump assembly 2, a pressure stabilizing tank 3, and a detection assembly 4. The flow stabilizing tank 1 is connected to the equipment's inlet pipe; the water pump assembly 2 is connected to the outlet pipe of the flow stabilizing tank 1, and includes multiple water pump units 21, each of which is independently frequency-controlled and pumps water to the outlet pipe; the pressure stabilizing tank 3 is connected to the outlet pipe and is used to balance water pressure fluctuations, the pressure stabilizing tank 3 includes a housing 31 and multiple air bladders, each air bladder being disposed within the housing 31, and the internal pressure of each air bladder being different; the detection assembly 4 is disposed on the outlet pipe and includes a pressure sensor 41 and a pressure switch 42, the pressure sensor 41 being used to detect changes in water pressure on the outlet pipe, and the pressure switch 42 being used to control the start and stop of the water pump units 21.

[0044] The technical solution of this utility model uses a flow stabilizer tank 1 connected to the water inlet pipe of the equipment. It can buffer and regulate the water flow entering the equipment, stabilizing the flow rate and pressure of the incoming water. When the municipal water supply pressure or flow rate fluctuates, the flow stabilizer tank 1 can play a certain buffering role, reducing the direct impact of these fluctuations on the operation of the subsequent water pump assembly 2 and pressure stabilizing tank 3, thus providing a basic guarantee for the stable operation of the entire water supply system.

[0045] like Figure 3As shown, the pressure stabilizing tank 3 is equipped with multiple air chambers with different internal pressures. When water pressure fluctuates in the outlet pipe, the air chambers with different pressures respond accordingly. For example, when the water pressure suddenly increases, the air chamber with relatively lower pressure will be compressed first to absorb some pressure energy; if the pressure continues to rise, other air chambers with slightly higher pressures will also participate in the adjustment in turn. This synergistic effect of multiple air chambers allows the pressure stabilizing tank 3 to respond to high-frequency pressure fluctuations more flexibly and quickly, and has a stronger pressure regulation capability than traditional single-chamber tanks. The water pump assembly 2 includes multiple water pump units 21, and each water pump unit 21 can be independently controlled by frequency conversion. The pressure sensor 41 in the detection assembly 4 monitors the water pressure changes on the outlet pipe in real time and feeds the information back to the control system. When water pressure fluctuates, the control system can accurately adjust the operating frequency and power of each water pump unit 21 according to the actual pressure conditions. For example, during peak water usage periods, when pressure drops, the control system can increase the operating frequency of some or all pump units 21 to increase water flow and pressure; during off-peak periods, it can reduce the number of pump units 21 or lower their operating frequency to reduce excessively high water pressure. This precise frequency conversion control can respond promptly to pressure changes, further ensuring stable water supply pressure. The pressure sensor 41 in the detection component 4 continuously monitors the water pressure in the outlet pipe, providing accurate data support for the frequency conversion control of the pump component 2. The pressure switch 42 plays a dual role; when the water pressure exceeds a certain range, the pressure switch 42 can directly control the start and stop of the pump, preventing abnormal pressure from damaging the equipment and water supply system. Through the coordinated work of the pressure sensor 41 and the pressure switch 42, water pressure fluctuations can be captured in real time, and corresponding control actions can be taken quickly to ensure that the water supply system is always in a stable operating state. In summary, this utility model effectively improves the water supply equipment's ability to cope with high-frequency pressure fluctuations and ensures stable water supply through the multi-bag design of the pressure stabilizing tank 3, the independent frequency conversion control of the water pump assembly 2, the real-time monitoring and control of the detection assembly 4, and the stable water intake function of the flow stabilizing tank 1.

[0046] In one embodiment, the multiple airbags can be integrally molded to form an air mass, with at least two points on the outer peripheral wall of the air mass exhibiting different pressures. This integrated air mass design simplifies manufacturing, eliminating the need for separate manufacturing and installation of multiple independent airbags, thus reducing manufacturing steps and installation time. Simultaneously, the integrated structure reduces the risk of malfunctions due to improper airbag installation during installation, improving the overall assembly quality and production efficiency of the equipment. The different pressures at at least two points on the outer peripheral wall of the air mass mean that the air mass can respond to water pressure fluctuations to varying degrees at different locations. When the water pressure in the outlet pipe suddenly increases in a certain area, the lower-pressure portion of the air mass at the corresponding location will be preferentially compressed to absorb excess pressure energy; while in areas where the water pressure decreases, the second-highest pressure portion of the air mass will expand, releasing pressure to replenish the water pressure. This flexible pressure regulation method can more accurately cope with complex and variable high-frequency pressure fluctuations, and is more effective in balancing water pressure than traditional single-chamber tanks or pressure-uniform airbag structures.

[0047] In one embodiment, the plurality of airbags includes at least a first airbag 32, a second airbag 33, and a third airbag 34, wherein the pressure of the first airbag 32 is less than that of the second airbag 33, which is less than that of the third airbag 34. This configuration allows the first airbag 32 to react quickly to small pressure fluctuations in the water supply pipeline. Due to its lower internal pressure, even a small pressure change can cause a significant volume change, thus absorbing or releasing pressure promptly, providing initial buffering and reducing the impact of pressure fluctuations on the entire water supply system. When moderate pressure fluctuations occur, the second airbag 33 begins to function. Building upon the adjustment by the first airbag 32, it further balances and regulates the pressure, controlling pressure fluctuations within a smaller range and ensuring relative stability of the water supply pressure. When encountering large pressure fluctuations, the third airbag 34 participates in the pressure regulation process. The third airbag 34 has a higher internal pressure and can withstand larger pressure changes. Through its own compression and expansion, it effectively absorbs and releases a large amount of pressure energy, preventing pressure imbalance in the water supply system due to large pressure fluctuations and ensuring the stability of the water supply. By cooperating with airbags of different pressure levels, a multi-layered and comprehensive pressure regulation system is formed. When faced with complex and ever-changing pressure fluctuations, each airbag can participate in the pressure regulation process in an orderly manner according to its own characteristics and pressure range, reducing the limitations of a single airbag in dealing with different degrees of pressure fluctuations and greatly improving the overall pressure regulation efficiency of the pressure stabilizing tank 3.

[0048] like Figure 3As shown, in one embodiment, the first airbag 32, the second airbag 33, and the third airbag 34 are sequentially and movably stacked within the housing 31 from bottom to top. This arrangement ensures that, under the influence of gravity, the water pressure is relatively higher at the bottom and relatively lower at the top. Placing the first airbag 32 at the bottom and the third airbag 34 at the top better matches this pressure distribution characteristic. When the water pressure increases, the first airbag 32 at the bottom can initially act as a buffer. As the pressure continues to rise, the second airbag 33 and the third airbag 34 then participate in the adjustment in sequence, making the airbags' response to pressure more reasonable and efficient. The movably stacked arrangement allows each airbag to be relatively independent yet cooperative. During pressure changes, adjacent airbags can compress and transfer pressure to each other, forming a continuous pressure regulation system. For example, when the first airbag 32 at the bottom is compressed to a certain extent, it will transfer pressure to the second airbag 33 at the top, prompting the second airbag 33 to also participate in pressure regulation, thereby achieving a more precise pressure balance.

[0049] In one embodiment, a partition 35 is provided between two adjacent airbags. This arrangement separates airbags with different pressures, allowing each airbag to independently perform its pressure regulation function. For example, the first airbag 32, the second airbag 33, and the third airbag 34 respond to water pressure fluctuations according to their own pressure characteristics within their respective spaces, reducing mutual interference between adjacent airbags. Without the partition 35, when one airbag expands or contracts due to pressure changes, it may affect the normal operation of adjacent airbags, leading to inaccurate pressure regulation. This helps improve the accuracy of the airbag's response to pressure fluctuations, enabling each airbag to effectively absorb or release pressure within its designed pressure range, enhancing the pressure stabilizing tank 3's ability to cope with pressure fluctuations of varying degrees. Furthermore, the partition 35 provides additional support and fixation for the airbags, enhancing the stability of the entire airbag assembly structure. Inside the pressure stabilizing tank 3, when water flow impacts or the airbags expand and contract, the partition 35 can limit excessive deformation and displacement of the airbags, preventing them from squeezing, colliding, or even being damaged. Especially during long-term use, the partition 35 can maintain the relative position of the airbags, extend the service life of the airbags, and reduce equipment failures and maintenance costs caused by airbag damage.

[0050] In one embodiment, a rolling structure is provided on the outer periphery of the partition 35, through which the partition 35 contacts the inner wall of the housing 31; and a through hole is provided on the partition 35. This arrangement transforms the sliding friction between the partition 35 and the inner wall of the housing 31 into rolling friction through the rolling structure (such as rollers, balls, etc.). When the airbag expands or contracts due to pressure changes, the partition 35 needs to move within the housing 31 to adapt to these changes. Compared to sliding friction, rolling friction significantly reduces frictional force, which not only makes the movement of the partition 35 smoother but also effectively reduces the wear on the contact points between the partition 35 and the housing 31. This helps extend the service life of the partition 35 and the housing 31, reducing equipment failures and maintenance costs caused by frictional wear. Furthermore, because the rolling structure reduces the resistance during the movement of the partition 35, when pressure fluctuations occur in the water supply system and the airbag volume changes, the partition 35 can respond to these changes more quickly and flexibly. It can move more easily with the expansion or contraction of the air bladders, ensuring that the relative positions between adjacent air bladders can be adjusted in a timely manner. This allows each air bladder to better perform its pressure regulation function, improving the overall response speed and regulation accuracy of the pressure stabilizing tank 3 to pressure changes. The through-holes on the baffle 35 play a crucial role in communication. During pressure changes, gas and water can flow between adjacent air bladders through the through-holes, achieving pressure transmission and balance. When the pressure in one air bladder changes, gas and water flow through the through-holes to adjacent air bladders, ensuring a reasonable distribution of pressure among different air bladders. This helps maintain the stability of the pressure within the entire pressure stabilizing tank 3, reducing the occurrence of excessively high or low local pressures and ensuring the stable operation of the water supply system.

[0051] In one embodiment, the airbag is connected to an inflation device for regulating the pressure inside the airbag. This configuration ensures that the required pressure of the water supply system varies depending on the time of day and user demand. For example, during peak water usage periods, higher pressure is needed to ensure a sufficient water supply; while during off-peak periods, the pressure requirement is relatively lower. The inflation device allows for precise adjustment of the pressure inside the airbag according to the actual water supply situation, enabling the pressure stabilizing tank 3 to better adapt to various operating conditions and ensure stable water supply pressure.

[0052] like Figure 4As shown, in one embodiment, a connecting pipe 36 is provided between two adjacent airbags. A solenoid valve 37 and a pump body 38 are installed on the connecting pipe 36. The solenoid valve 37 controls the opening and closing of the connecting pipe 36, and the pump body 38 controls the transfer of gas between adjacent airbags. With this configuration, the pressure in different airbags will vary with water consumption, pump operating conditions, and other factors during water supply system operation. Through the cooperation of the pump body 38 and the solenoid valve 37, the transfer of gas between adjacent airbags can be precisely controlled. For example, when the pressure in one airbag is too high and the pressure in another airbag is too low, the solenoid valve 37 is opened, and the pump body 38 is activated to transfer gas from the third airbag 34 to the first airbag 32, achieving dynamic pressure balance and ensuring that each airbag operates within a suitable pressure range. The water supply system's pressure requirements differ under different water usage periods and operating conditions. For example, higher pressure is required during peak water usage periods. At this time, the pressure regulation capacity of the entire pressure stabilizing tank 3 can be improved by adjusting the gas transfer to allow more air bladders to participate in pressure regulation. During off-peak water usage periods, the air bladder pressure can be adjusted appropriately to reduce energy consumption.

[0053] In one embodiment, the pressure stabilizing tank 3 is provided with a drain outlet at its bottom, and a water quality detector 39 is installed inside the pressure stabilizing tank 3 to monitor water quality changes in real time. With this configuration, the water quality detector 39 can monitor the water quality in the pressure stabilizing tank 3 in real time. Once a change in water quality is detected, such as excessive microorganisms, increased impurities, or abnormal pH levels, an alarm can be issued promptly. When the water quality detector 39 detects that the water quality is unqualified, the water in the tank can be drained through the drain outlet at the bottom for cleaning and replacement with fresh water, ensuring that the water quality in the pressure stabilizing tank 3 always meets the requirements. Simultaneously, the drain outlet can also be used to periodically discharge sediment and impurities from the tank, preventing these substances from accumulating and affecting water quality and the normal operation of the equipment.

[0054] In one embodiment, the pressure stabilizing tank 3 is provided with a spray nozzle on its top. With this configuration, dirt and impurities may accumulate inside the pressure stabilizing tank 3 during long-term use. Spraying water into the tank through the spray nozzle allows for a thorough cleaning of the inner wall of the tank, effectively removing the attached dirt and maintaining the cleanliness of the tank interior. This helps prevent dirt from polluting the water quality, while also reducing the risk of corrosion inside the tank and extending the service life of the pressure stabilizing tank 3.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A tank type cascade non-pressure variable frequency secondary water supply apparatus, characterized by, include: A flow stabilizer tank is used to connect to the equipment's water inlet pipe; A water pump assembly, connected to the outlet pipe of the flow stabilizer tank, includes multiple water pump units, each of which is independently frequency-controlled and pumps water to the outlet pipe. A pressure stabilizing tank, connected to the water outlet pipe and used to balance water pressure fluctuations, includes a shell and multiple air chambers, each air chamber having a different internal pressure within the shell; and... The detection component, installed on the water outlet pipe, includes a pressure sensor and a pressure switch. The pressure sensor is used to detect changes in water pressure on the water outlet pipe, and the pressure switch is used to control the start and stop of the water pump unit.

2. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 1, wherein The multiple airbags can be integrally formed so that they form an air mass, and the pressure is different at at least two points on the outer peripheral wall of the air mass.

3. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 1, wherein The plurality of airbags includes at least a first airbag, a second airbag, and a third airbag, wherein the pressure of the first airbag is less than that of the second airbag and less than that of the third airbag.

4. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 3, wherein The first airbag, the second airbag, and the third airbag are sequentially and movably stacked within the shell from bottom to top.

5. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 4, wherein A partition is installed between two adjacent airbags.

6. The tank-type pressure-reducing variable frequency secondary water supply device according to claim 5, wherein A rolling structure is provided on the outer periphery of the partition, and the partition contacts the inner wall of the housing through the rolling structure; Furthermore, the partition plate has through holes.

7. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 1, wherein The airbag is connected to an inflation device, which is used to adjust the pressure inside the airbag.

8. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 1, wherein A connecting pipe is provided between two adjacent airbags. A solenoid valve and a pump body are provided on the connecting pipe. The solenoid valve is used to control the opening and closing of the connecting pipe, and the pump body is used to control the transfer of gas between adjacent airbags.

9. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 1, wherein The pressure stabilizing tank is equipped with a drain outlet at the bottom and a water quality detector inside the pressure stabilizing tank to monitor water quality changes in real time.

10. The tank-type pressure-reducing variable frequency secondary water supply equipment according to claim 9, wherein The pressure stabilizing tank is equipped with a spray nozzle on its top.

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