Non-negative pressure water supply equipment

Abstract

The utility model relates to the technical field of water supply equipment, and discloses non-negative-pressure water supply equipment which comprises a base plate, a vibration reduction assembly is installed at the bottom of the base plate, and a non-negative-pressure water supply assembly and a PLC control assembly are installed at the top of the base plate. According to the non-negative-pressure water supply equipment, optimization design and linkage control are integrated, the water supply stability and the anti-interference capacity are remarkably improved, specifically, the vibration reduction assembly at the bottom of the base plate gives consideration to low-frequency vibration reduction and high-frequency energy absorption, equipment operation vibration and displacement are effectively restrained, in the non-negative-pressure water supply assembly, a water pump sucks a municipal water source through a water inlet pipe, and the water supply efficiency is improved. The electromagnetic regulating valve and the pressure sensor are linked with the bypass pipeline and the one-way valve, bypass emergency pressure supplementation can be automatically switched when the pressure of a main pipeline fluctuates, the negative pressure risk is eliminated, the steady flow tank is matched with a floating valve element and an air pressure balance cavity in the vacuum suppressor, dynamic balance of water pressure is maintained, the cavitation phenomenon is avoided, the PLC control assembly can regulate and control all electrical elements in a centralized mode, and the control efficiency is improved. And intelligent start-stop and fault early warning are realized.

Description

Technical Field

[0001] This application relates to the field of water supply equipment technology, specifically a negative pressure-free water supply device. Background Technology

[0002] Negative pressure water supply equipment is designed to solve water supply problems in high-rise buildings or areas far from natural water sources. Its function is to raise water from the ground or low water level areas to high-rise buildings or locations far from water sources by generating negative pressure or vacuum, thereby achieving the purpose of water supply. The equipment creates a low-pressure area or vacuum environment through mechanical or electrical equipment. Then, using this low-pressure area, water is drawn into the equipment. Finally, the water enters the equipment's water delivery pipes and is lifted to the area that needs water supply under the action of pumps or pressure systems.

[0003] An existing patent (publication number: CN221721787U) discloses a negative pressure-free water supply device, including a water supply device body and a water supply pipe installed on the water supply device body; the water supply pipe has a water supply chamber, and a rotating rod is rotatably installed in the water supply chamber. A scraping component for scraping dirt from the inner wall of the water supply pipe is installed on the rotating rod. Filter cartridges are installed at both the inlet and outlet ends of the water supply pipe, and rotating components rotatably connected to the rotating rod are rotatably installed on the filter cartridges. This utility model proposes a negative pressure-free water supply device, solving the problem of impurities and scale easily adhering to the inner wall of the water supply pipe during long-term water supply operation.

[0004] While the devices in the aforementioned comparative documents can easily clean impurities and scale adhering to the inner wall of the water supply pipe, they have not been properly optimized for the negative pressure component, making it difficult to achieve emergency pressure replenishment and posing a risk of negative pressure. To address these issues, a negative pressure-free water supply device is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a negative pressure-free water supply device that effectively eliminates the risk of negative pressure and improves the stability of water supply through linkage control and bypass emergency pressure replenishment design.

[0006] To achieve the above objectives, this application provides the following technical solution: a negative pressure-free water supply device, including a base plate, a vibration damping component installed at the bottom of the base plate, and a negative pressure-free water supply component and a PLC control component installed at the top of the base plate, wherein the electrical components inside the negative pressure-free water supply component are all electrically connected to the PLC control component.

[0007] The negative pressure-free water supply assembly includes a water pump fixedly connected to the upper surface of the substrate. The output end of the water pump is connected to a water supply pipe. An electromagnetic regulating valve is installed at the output end of the water supply pipe. A flow stabilizing tank is installed above the substrate. A flow stabilizing inlet pipe and a vacuum suppressor are installed at the top of the flow stabilizing tank. One end of the flow stabilizing inlet pipe is connected to the electromagnetic regulating valve. The vacuum suppressor has a floating valve core and a pressure balancing chamber inside. A flow stabilizing supply pipe is installed at the bottom of the flow stabilizing tank. A water supply line is installed at the output end of the flow stabilizing supply pipe. A pressure sensor is installed on a section of the water supply line. A bypass line is provided between the water supply pipe and the water supply line. One-way valves are installed at both ends of the bypass line.

[0008] Through the above-mentioned solution, integrated and optimized design and linkage control significantly improve water supply stability and anti-interference capability. Specifically, the vibration damping components at the bottom of the base plate combine low-frequency vibration damping and high-frequency energy absorption, effectively suppressing equipment vibration and displacement during operation. In the negative pressure-free water supply component, the water pump draws municipal water through the inlet pipe. The electromagnetic regulating valve, pressure sensor, bypass pipeline, and check valve are linked to automatically switch to bypass emergency pressure replenishment when the main pipeline pressure fluctuates, eliminating the risk of negative pressure. The flow stabilizing tank, together with the floating valve core and air pressure balance chamber in the vacuum suppressor, maintains dynamic water pressure balance and avoids cavitation. The PLC control component can centrally regulate various electrical components, realizing intelligent start-up and shutdown and fault early warning. In summary, through multi-system collaborative optimization, this equipment significantly improves vibration damping efficiency, emergency response, and long-term reliability compared to existing technologies.

[0009] Furthermore, the input end of the water pump is connected to a water inlet pipe, one end of which is connected to a municipal pipeline.

[0010] With the above solution, when the water pump starts, water from the municipal pipeline can be pumped through the inlet pipe to the delivery pipe for transportation.

[0011] Furthermore, a drain pipe is installed on one side of the bottom of the flow stabilizing tank.

[0012] The above scheme allows for convenient external discharge of wastewater from the stabilizing tank via a drain pipe.

[0013] Furthermore, a bracket is fixedly connected to the upper surface of the substrate, and the outer surface of the flow stabilizer is fixedly connected to the top of the bracket.

[0014] The above-described design allows the support bracket to be more stably fixed to the upper surface of the substrate.

[0015] Furthermore, the water supply pipe and the water delivery pipe can be connected by a bypass pipe, one end of which is located between the pressure sensor and the inlet of the water supply pipe, and the other end of which is located between the water supply pipe and the electromagnetic regulating valve.

[0016] The above scheme defines the positional relationship between the two ends of the bypass pipeline, which is beneficial for emergency pressure replenishment through the bypass pipeline.

[0017] Furthermore, the vibration damping assembly includes a base and a connecting pillar fixedly connected to the upper surface of the base, with the top of the connecting pillar fixedly connected to the bottom surface of the substrate.

[0018] The above solution enables a stable connection between the base and the substrate.

[0019] Furthermore, damping columns are fixedly connected to the four corners of the base, and a helical steel spring is fitted on the outside of each damping column. The top ends of the four helical steel springs are fixedly connected to the bottom surface of the base plate, and the bottom ends of the four helical steel springs are fixedly connected to the upper surface of the base.

[0020] The above scheme, with the damping column and helical steel spring working together, can take into account both low-frequency and high-frequency vibration reduction, adapt to complex vibration spectrum, and has a certain load-bearing capacity.

[0021] Furthermore, an anti-slip pad is fixedly connected to the bottom surface of the base, and positioning bolts are installed at the four corners of the base.

[0022] The above solution, with its anti-slip pads and positioning bolts, enables the equipment to be stably positioned on the ground, thereby reducing the impact of vibration on the equipment.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This negative pressure-free water supply equipment integrates optimized design and linkage control, significantly improving water supply stability and anti-interference capability. Specifically, the vibration damping component at the bottom of the base plate combines low-frequency vibration damping and high-frequency energy absorption, effectively suppressing equipment operation vibration and displacement. In the negative pressure-free water supply component, the water pump draws municipal water through the inlet pipe. The electromagnetic regulating valve, pressure sensor, bypass pipeline, and check valve are linked to automatically switch to bypass emergency pressure replenishment when the main pipeline pressure fluctuates, eliminating the risk of negative pressure. The flow stabilizing tank, together with the floating valve core and air pressure balance chamber in the vacuum suppressor, maintains dynamic water pressure balance and avoids cavitation. The PLC control component can centrally regulate various electrical components to achieve intelligent start-stop and fault warning. In summary, through multi-system collaborative optimization, this equipment significantly improves vibration reduction efficiency, emergency response, and long-term reliability compared to existing technologies. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall front view of the structure of this application;

[0026] Figure 2 This is a schematic diagram of the overall bottom view of the structure of this application;

[0027] Figure 3 This is a top view of the overall structure of this application.

[0028] Figure 4 This is a schematic diagram of the overall side view of the structure of this application;

[0029] Figure 5 This is a partial planar structural diagram of the structure of this application.

[0030] In the picture:

[0031] 1. Base plate; 2. Vibration damping assembly; 201. Base; 202. Connecting support column; 203. Damping column; 204. Helical steel spring; 205. Anti-slip pad; 206. Positioning bolt; 3. Negative pressure-free water supply assembly; 301. Water pump; 302. Inlet pipe; 303. Delivery pipe; 304. Electromagnetic regulating valve; 305. Flow stabilizer; 306. Flow stabilizer inlet pipe; 307. Vacuum suppressor; 308. Flow stabilizer inlet pipe; 309. Water supply pipeline; 310. Pressure sensor; 311. Bypass pipeline; 312. Check valve; 313. Drain pipe; 314. Bracket; 4. PLC control assembly. Detailed Implementation

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

[0033] Please see Figure 1 , Figure 2 and Figure 3This embodiment of a negative pressure-free water supply device includes a base plate 1. A vibration damping component 2 is mounted on the bottom of the base plate 1, and a negative pressure-free water supply component 3 and a PLC control component 4 are mounted on the top of the base plate 1. The electrical components inside the negative pressure-free water supply component 3 are all electrically connected to the PLC control component 4. The PLC control component 4 allows for convenient control of the electrical components inside the negative pressure-free water supply component 3, thereby achieving a linkage control effect. The vibration damping component 2 includes a base 201 and a connecting support column 202 fixedly connected to the upper surface of the base 201. The top of the connecting support column 202 is fixedly connected to the bottom surface of the base plate 1. The connecting support column 202 enables a stable connection between the base 201 and the base plate 1. Damping columns 203 are fixedly connected to each of the four corners. Each damping column 203 is fitted with a helical steel spring 204. The top ends of the four helical steel springs 204 are fixedly connected to the bottom surface of the base plate 1, and the bottom ends of the four helical steel springs 204 are fixedly connected to the upper surface of the base 201. The damping columns 203 and helical steel springs 204 work together to reduce both low and high frequency vibrations, adapt to complex vibration spectra, and have a certain load-bearing capacity. Anti-slip pads 205 are fixedly connected to the bottom surface of the base 201, and positioning bolts 206 are installed at each of the four corners of the base 201. The anti-slip pads 205 and positioning bolts 206 can stably position the equipment on the ground, thereby reducing the impact of vibration on the equipment.

[0034] Please see Figure 3 , Figure 4 and Figure 5 The negative pressure-free water supply component 3 includes a water pump 301 fixedly connected to the upper surface of the base plate 1. The input end of the water pump 301 is connected to a water inlet pipe 302, one end of which is connected to a municipal pipeline. When the water pump 301 starts, water from the municipal pipeline can be pumped through the water inlet pipe 302 to the water delivery pipe 303 for transportation. The output end of the water pump 301 is connected to the water delivery pipe 303, and an electromagnetic regulating valve 304 is installed at the output end of the water delivery pipe 303. A flow stabilizing tank 305 is installed on the top of the base plate 1, and a bracket 314 is fixedly connected to the upper surface of the base plate 1. The outer surface of the flow stabilizing tank 305 is fixedly connected to the top of the bracket 314. The stabilizer tank 305 is more stably fixed on the upper surface of the substrate 1. The top of the stabilizer tank 305 is equipped with a water inlet pipe 306 and a vacuum suppressor 307. One end of the water inlet pipe 306 is connected to the electromagnetic regulating valve 304. The vacuum suppressor 307 is equipped with a floating valve core and a pressure balance chamber. The vacuum suppressor 307 at the top of the stabilizer tank 305 senses the changes in liquid level and pressure in the stabilizer tank 305 in real time through the floating valve core. When the liquid level drops and causes negative pressure in the stabilizer tank 305, the floating valve core moves down and opens the pressure balance chamber to communicate with the outside air, so as to avoid the vacuum degree in the stabilizer tank 305 from exceeding the standard. When the liquid level rises, the valve core resets and seals, maintaining the airtightness.

[0035] Please see Figure 2 , Figure 3 and Figure 4 A constant flow water supply pipe 308 is installed at the bottom of the constant flow water supply tank 305. A water supply pipeline 309 is installed at the output end of the constant flow water supply pipe 308. A pressure sensor 310 is installed on a section of the water supply pipeline 309. A bypass pipeline 311 is provided between the water delivery pipe 303 and the water supply pipeline 309. One-way valves 312 are installed at both ends of the bypass pipeline 311. The water delivery pipe 303 and the water supply pipeline 309 can be connected through the bypass pipeline 311. One end of the bypass pipeline 311 is located between the pressure sensor 310 and the inlet end of the water supply pipeline 309, and the other end of the bypass pipeline 311 is located between the water delivery pipe 303 and the solenoid regulating valve 304. The positional relationship between the two ends of the bypass pipe 311 is defined, which is beneficial for emergency pressure replenishment through the bypass pipe 311. Both ends of the bypass pipe 311 are equipped with one-way valves 312 to form bidirectional check protection. When the pressure sensor 310 detects a sudden drop in pressure at the user end, the PLC control component 4 will quickly switch to bypass mode, the electromagnetic regulating valve 304 will close the main line, and the water will flow directly to the user end through the bypass pipe 311, which improves the pressure replenishment rate and effectively eliminates the risk of negative pressure. A drain pipe 313 is installed on one side of the bottom of the flow stabilizing tank 305. The drain pipe 313 can be used to conveniently discharge the sewage inside the flow stabilizing tank 305.

[0036] It should be noted that by adjusting the connection sequence of the water pump 301, the electromagnetic regulating valve 304 and the flow stabilizing tank 305, and combining the PLC control component 4 and the bypass pipeline 311, this application can monitor and dynamically adjust in real time, effectively eliminating negative pressure.

[0037] In this embodiment, a negative pressure-free water supply device integrates optimized design and linkage control, significantly improving water supply stability and anti-interference capability. Specifically, the vibration damping component 2 at the bottom of the base plate 1 combines low-frequency vibration damping and high-frequency energy absorption, effectively suppressing equipment operation vibration and displacement. In the negative pressure-free water supply component 3, the water pump 301 draws municipal water through the inlet pipe 302. The electromagnetic regulating valve 304, pressure sensor 310, bypass pipe 311, and one-way valve 312 are linked, which can automatically switch to bypass emergency pressure replenishment when the main line pressure fluctuates, eliminating the risk of negative pressure. The flow stabilizing tank 305, together with the floating valve core and air pressure balance chamber in the vacuum suppressor 307, maintains dynamic water pressure balance and avoids cavitation. The PLC control component 4 can centrally regulate various electrical components to achieve intelligent start-stop and fault warning. In summary, through multi-system collaborative optimization, this device significantly improves vibration damping efficiency, emergency response, and long-term reliability compared to existing technologies.

[0038] The working principle of the above embodiment is as follows: Water pump 301 draws water from the municipal pipe network through inlet pipe 302, and delivers it to electromagnetic regulating valve 304 through water delivery pipe 303. Electromagnetic regulating valve 304 adjusts the flow rate according to the instructions of PLC control component 4. After the water flows through electromagnetic regulating valve 304, it enters the flow stabilizing tank 305 through the steady inlet water pipe 306. The pressure inside the flow stabilizing tank 305 is dynamically adjusted by the floating valve core inside the vacuum suppressor 307 and the air pressure balance chamber to avoid cavitation and negative pressure. The pressure-stabilized water is delivered to the water supply pipeline 309 through the steady flow water supply pipe 308, and finally supplied to the user end. When pressure sensor 310 detects an abnormal drop in pressure in water supply pipeline 309, PLC control component 4 immediately starts. The bypass pipe 311, through the one-way valve 312, directly introduces the water flow from the water supply pipe 303 into the water supply pipe 309, bypassing the flow stabilizing tank 305 to quickly replenish pressure, eliminating the risk of negative pressure and ensuring continuous water supply. The vibration damping component 2 at the bottom of the equipment absorbs high-frequency vibrations, such as the impact of the water pump 301 starting and stopping, and isolates low-frequency vibrations, such as water flow pulsation in the pipeline, through the synergistic action of the damping column 203 and the spiral steel spring 204. The base 201 is fixed to the ground by the anti-slip pad 205 and the positioning bolt 206 to prevent equipment displacement. The PLC control component 4 collects data from the pressure sensor 310 in real time and controls the start and stop of the water pump 301, the opening and closing of the electromagnetic regulating valve 304, and the switching of the bypass pipe 311 through a preset algorithm, making it more practical.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure-free water supply device, comprising a base plate (1), characterized in that: The bottom of the substrate (1) is equipped with a vibration damping component (2), and the top of the substrate (1) is equipped with a negative pressure water supply component (3) and a PLC control component (4). The electrical components inside the negative pressure water supply component (3) are all electrically connected to the PLC control component (4). The negative pressure-free water supply assembly (3) includes a water pump (301) fixedly connected to the upper surface of the substrate (1). The output end of the water pump (301) is connected to a water delivery pipe (303). An electromagnetic regulating valve (304) is installed at the output end of the water delivery pipe (303). A flow stabilizing tank (305) is installed above the substrate (1). A flow stabilizing inlet pipe (306) and a vacuum suppressor (307) are installed on the top of the flow stabilizing tank (305). One end of the flow stabilizing inlet pipe (306) is connected to the electromagnetic regulating valve (304). The vacuum suppressor (307) is equipped with a floating valve core and a pressure balance chamber. A steady flow water supply pipe (308) is installed at the bottom of the steady flow tank (305). A water supply pipeline (309) is installed at the output end of the steady flow water supply pipe (308). A pressure sensor (310) is installed on the pipe section of the water supply pipeline (309). A bypass pipeline (311) is provided between the water delivery pipe (303) and the water supply pipeline (309). A one-way valve (312) is installed at both ends of the bypass pipeline (311).

2. The negative pressure-free water supply device according to claim 1, characterized in that: The water pump (301) has an inlet pipe (302) connected to its input end, and one end of the inlet pipe (302) is connected to a municipal pipeline.

3. The negative pressure-free water supply device according to claim 1, characterized in that: A drain pipe (313) is installed on one side of the bottom of the flow stabilizer (305).

4. The negative pressure-free water supply device according to claim 1, characterized in that: A bracket (314) is fixedly connected to the upper surface of the substrate (1), and the outer surface of the flow stabilizer (305) is fixedly connected to the top of the bracket (314).

5. The negative pressure-free water supply device according to claim 1, characterized in that: The water delivery pipe (303) and the water supply pipe (309) can be connected by a bypass pipe (311). One end of the bypass pipe (311) is located between the pressure sensor (310) and the inlet end of the water supply pipe (309), and the other end of the bypass pipe (311) is located between the water delivery pipe (303) and the electromagnetic regulating valve (304).

6. The negative pressure-free water supply device according to claim 1, characterized in that: The vibration damping component (2) includes a base (201) and a connecting pillar (202) fixedly connected to the upper surface of the base (201). The top of the connecting pillar (202) is fixedly connected to the bottom surface of the substrate (1).

7. The negative pressure-free water supply device according to claim 6, characterized in that: Damping columns (203) are fixedly connected to the four corners of the base (201). Each damping column (203) is fitted with a spiral steel spring (204). The top ends of the four spiral steel springs (204) are fixedly connected to the bottom surface of the base plate (1), and the bottom ends of the four spiral steel springs (204) are fixedly connected to the upper surface of the base (201).

8. A negative pressure-free water supply device according to claim 6, characterized in that: The bottom surface of the base (201) is fixedly connected with an anti-slip pad (205), and positioning bolts (206) are installed at the four corners of the base (201).

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