Pipeline anti-freezing central water purification equipment with hot water circulation device

Abstract

The utility model discloses pipeline anti-freezing central water purification equipment with a hot water circulating device, which comprises an equipment main body, a raw water tank, a pretreatment system, a membrane filtration system, an ultraviolet sterilization device and a water purification tank which are sequentially communicated are arranged in the equipment main body, and the pipeline anti-freezing central water purification equipment further comprises a PLC (Programmable Logic Controller), in addition, the central water purification equipment is additionally provided with a hot water circulating device which comprises a water inlet, a three-way electromagnetic valve, an instantaneous heating device, a circulating pump and a temperature sensor. The hot water circulating device is additionally arranged to heat and preserve heat of water in the water supply pipeline, and the water inlet of the circulating device is communicated with domestic wastewater, so that secondary utilization of wastewater resources is realized. According to the utility model, the hot water circulating device is adopted to preserve heat of the pipeline and is combined with the recycling of domestic wastewater, so that the frost heaving of the pipeline can be effectively prevented, the recycling of wastewater resources can be realized, remarkable energy-saving, environment-friendly and economic benefits are achieved, and the construction of a resource-saving society is effectively promoted.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a central water purification equipment with a hot water circulation device and a pipe antifreeze system. Background Technology

[0002] In winter, when cold waves or other specific natural environmental conditions occur, temperatures plummet. Strong cold air sweeps in rapidly, causing temperatures in many areas to drop sharply in a short period, sometimes even remaining below freezing for extended periods. This low-temperature environment poses a significant challenge to water supply pipes. The water inside the pipes freezes under the influence of low temperatures. As the water freezes, it expands in volume, exerting enormous pressure on the pipe walls. Although the materials used in water supply pipes generally possess a certain degree of strength, they cannot withstand the continuous impact of the expanding ice pressure, ultimately leading to pipe freezing, cracking, or damage, which in turn affects the normal water supply for residents.

[0003] Currently, some drinking water management units directly heat the piped water. When the water temperature is low, they use electric heating equipment to quickly raise it to the set temperature. However, this continuous heating method requires high energy consumption, especially in long-distance pipelines where heat loss is significant. Furthermore, the electric heating equipment needs to be installed inside the pipeline, making maintenance and repair complex and potentially affecting the normal supply of piped water. Summary of the Invention

[0004] This invention aims to overcome the shortcomings of existing technologies by proposing a central water purification device with a hot water circulation system for pipe freezing prevention. The hot water circulation system is added to the existing direct drinking water equipment to prevent the risk of pipe freezing and expansion.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A central water purification system with a hot water circulation device for pipe freezing prevention is characterized in that: the central water purification system includes a main body, within which are arranged sequentially a first water inlet, a water inlet solenoid valve, a raw water tank, a water inlet pump, a pretreatment system, a booster pump, a membrane filtration system, an ultraviolet sterilization device, a purified water tank, a water supply pipe, and a water outlet, and further includes a hot water circulation device and a PLC controller.

[0007] Furthermore, the water inlet is connected to the raw water tank via a first water inlet solenoid valve.

[0008] Furthermore, the raw water tank is connected to the pretreatment system via an inlet pump.

[0009] Furthermore, the pretreatment system is equipped with a quartz sand filter, an activated carbon filter, and a precision filter connected in sequence, wherein the precision filter is a PP cotton filter.

[0010] Further, the pre-treatment system is in communication with the membrane filtration system through a booster pump.

[0011] Further, the membrane filtration system is a combined unit of reverse osmosis membranes or nanofiltration membranes in series or parallel, and the purified water outlet is in communication with the ultraviolet sterilization device, and the concentrated water outlet is directly in communication with a sewer.

[0012] Further, the ultraviolet sterilization device is in communication with the purified water tank through a one-way valve, and the purified water tank is connected with the water outlet through a water supply pipeline.

[0013] Further, the hot water circulation device comprises a second water inlet, a first three-way electromagnetic valve, a first one-way valve, a second three-way electromagnetic valve, a circulating pump, a temperature sensor and a second one-way valve connected in sequence, and further comprises an instantaneous heating device, wherein the water inlet of the instantaneous heating device is connected with the second three-way electromagnetic valve, and the water outlet is connected with a pipeline between the second three-way electromagnetic valve and the circulating pump.

[0014] Further, the pipeline of the hot water circulation device is spirally wound on the water supply pipeline, when the temperature of the temperature sensor is lower than a certain set value and is not enough to make the water of the water supply pipeline out of the freezing temperature, the hot water circulation device needs to heat the pipeline water in the device, at this time, the first three-way electromagnetic valve, the first one-way valve, the second three-way electromagnetic valve, the instantaneous heating device, the circulating pump, the temperature sensor and the second one-way valve form a circulating pipeline; when the temperature is heated to a certain set value, the hot water circulation device does not need to heat the pipeline water in the device, and the first three-way electromagnetic valve, the first one-way valve, the second three-way electromagnetic valve, the circulating pump, the temperature sensor and the second one-way valve form a circulating pipeline.

[0015] Further, the first water inlet electromagnetic valve, the water inlet pump, the booster pump, the first three-way electromagnetic valve, the second three-way electromagnetic valve, the instantaneous heating device, the circulating pump and the temperature sensor are electrically connected with a PLC controller.

[0016] The utility model discloses the beneficial effect:

[0017] The utility model discloses a technical scheme, is on the basis of original water purification equipment and adds hot water circulating device, and the pipeline of hot water circulating device spiral winding is on the water supply pipeline, and through the heat preservation layer that the circulating hot water forms outside the water supply pipeline, when the temperature of temperature sensor is lower than a certain setting value and is not enough to make the water of water supply pipeline to separate ice freezing temperature, and hot water circulating device needs to heat the pipeline water in the device, and at this time, the first three -way electromagnetic valve, first check valve, second three -way electromagnetic valve, instantaneous heating device, circulating pump, temperature sensor, second check valve form the circulation pipeline, when hot water circulating device does not need to heat the pipeline water in the device, the first three -way electromagnetic valve, first check valve, second three -way electromagnetic valve, circulating pump, temperature sensor, second check valve form the circulation pipeline, avoid the resource waste that always heats the pipeline water, simultaneously, the water inlet of this circulating device is connected with domestic waste water, realizes the secondary use of waste water resources, the utility model discloses hot water circulating device is used to pipeline heat preservation and combines domestic waste water recycling, not only can effectively prevent the pipe frost heaving, but also can realize waste water resource recycling, has remarkable energy -conserving, environmental protection and economic benefit, effectively promotes the construction of resource -conserving society. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Among them: 1. first water inlet, 2. water inlet electromagnetic valve, 3. raw water tank, 4. water inlet pump, 5. pretreatment system, 6. booster pump, 7. membrane filtration system, 8. ultraviolet sterilization device, 9. water purification tank, 10. water supply pipeline, 11. water outlet, 12. PLC controller, I. hot water circulating device, 13. second water inlet, 14. first three -way valve, 15. first check valve, 16. second three -way valve, 17. instantaneous heating device, 18. circulating pump, 19. temperature sensor, 20. second check valve. DETAILED DESCRIPTION

[0020] The embodiment of the utility model will be further explained in conjunction with the drawings. These drawings are all simplified schematic diagrams, and only show the basic structure of the utility model in a schematic manner, so they only show the structure related to the utility model. EMBODIMENT

[0021] REFERENCE Figure 1The embodiment provides a pipeline anti-freezing central water purification equipment with a hot water circulating device, which comprises an equipment main body, a first water inlet 1, a water inlet electromagnetic valve 2, a raw water tank 3, a water inlet pump 4, a pretreatment system 5, a booster pump 6, a membrane filtration system 7, an ultraviolet sterilization device 8, a purified water tank 9, a water supply pipeline 10, a water outlet 11 which are sequentially communicated in the equipment main body, and a PLC controller 12, a hot water circulating device I, a second water inlet 13, a first three-way electromagnetic valve 14, a first check valve 15, a second three-way electromagnetic valve 16, an instantaneous heating device 17, a circulating pump 18, a temperature sensor 19, a second check valve 20.

[0022] The first water inlet 1 is communicated with the raw water tank 3 through the water inlet electromagnetic valve 2; the raw water tank 3 is communicated with the pretreatment system 5 through the water inlet pump 4; a quartz sand filter, an activated carbon filter and a precision filter are sequentially arranged in the main body of the pretreatment system 5, and the precision filter is a PP cotton filter; the pretreatment system 5 is communicated with the membrane filtration system 7 through the booster pump 6; the membrane filtration system 7 is a combined unit of reverse osmosis membranes or nanofiltration membranes in series or parallel connection, a purified water outlet is communicated with the ultraviolet sterilization device 8, and a concentrated water outlet is directly communicated with a sewer; the ultraviolet sterilization device 8 is communicated with the purified water tank 9 through a check valve; the purified water tank 9 is connected with the water outlet 11 through the water supply pipeline 10; the pipeline of the hot water circulating device I is spirally wound on the water supply pipeline 10, a heat preservation layer is formed outside the water supply pipeline 10 by circulating hot water, when the temperature of the temperature sensor 19 is lower than a certain set value and is insufficient to make the water of the water supply pipeline 10 out of freezing temperature, the hot water circulating device I needs to heat the pipeline water in the device, at this time, the first three-way electromagnetic valve 14, the first check valve 15, the second three-way electromagnetic valve 16, the instantaneous heating device 17, the circulating pump 18, the temperature sensor 19 and the second check valve 20 form a circulating pipeline; when the water is heated to a certain set value and the hot water circulating device I does not need to heat the pipeline water in the device, the first three-way electromagnetic valve 14, the first check valve 15, the second three-way electromagnetic valve 16, the circulating pump 18, the temperature sensor 19 and the second check valve 20 form a circulating pipeline; the first water inlet electromagnetic valve 1, the water inlet pump 2, the booster pump 6, the first three-way electromagnetic valve 14, the second three-way electromagnetic valve 16, the instantaneous heating device 17, the circulating pump 18 and the temperature sensor 18 are electrically connected with the PLC controller 12.

[0023] Specific explanation is as follows:

[0024] The pipeline anti-freezing central water purification equipment with the hot water circulating device has the advantages that the municipal tap water is sent into the pretreatment system 5 through the water inlet electromagnetic valve 2 and the raw water pump 4 from the first water inlet 1 to be preliminarily filtered, the rust, suspended matters and other large-particle impurities in the water are filtered out, and the residual chlorine, peculiar smell and most of the organic pollutants in the water are removed; the water filtered through the pretreatment system 5 is sent into the membrane filtration system 7 through the booster pump 6, the bacteria, viruses, heavy metals and organic matters and other harmful substances in the water are filtered out, the concentrated water after filtration is directly discharged through the concentrated water valve, and the purified water enters the water purification tank 9 through the ultraviolet sterilization device 8, enters the water supply pipeline 10 and finally enters the water outlet 11 to be used by the user.

[0025] The domestic wastewater enters the hot water circulating device I from the second water inlet 2, and the water flow is circulated under the pushing of the circulating pump 18; the temperature sensor 19 transmits the water temperature in the circulating pipeline to the PLC controller 12 in real time; when the water temperature is lower than a certain set value, the PLC controller 12 opens the instantaneous heating device 17; at this time, the first three-way electromagnetic valve 14, the first one-way valve 15, the second three-way electromagnetic valve 16, the instantaneous heating device 17, the circulating pump 18, the temperature sensor 19 and the second one-way valve 20 form the circulating pipeline; when the water temperature is heated to a certain set temperature, the temperature sensor 19 transmits the water temperature information to the PLC controller 12 again, the PLC controller 12 closes the instantaneous heating device 17; at this time, the first three-way electromagnetic valve 14, the first one-way valve 15, the second three-way electromagnetic valve 16, the circulating pump 18, the temperature sensor 19 and the second one-way valve 20 form the circulating pipeline to heat and keep warm the water supply pipeline. In addition, when the user finishes using water, the domestic wastewater of the hot water circulating device I is directly discharged from the circulating pump 18, so that the pipeline of the hot water circulating device I is prevented from frost heaving.

[0026] In addition to the above-mentioned embodiments, the utility model can also have other implementation manners, and any technical scheme formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. A central water purification system with a hot water circulation device and frost-resistant pipes, characterized in that: The central water purification device comprises a device main body, a first water inlet, a water inlet electromagnetic valve, a raw water tank, a water inlet pump, a pretreatment system, a booster pump, a membrane filtration system, an ultraviolet sterilization device, a purified water tank, a water supply pipeline, and a water outlet are sequentially connected in the device main body, and the device further comprises a hot water circulation device and a PLC controller; The first water inlet is communicated with the raw water tank through the water inlet electromagnetic valve; The raw water tank is communicated with the pretreatment system through the water inlet pump; A quartz sand filter, an activated carbon filter, and a precision filter are sequentially arranged in the pretreatment system main body, and the precision filter is a PP cotton filter; The pretreatment system is communicated with the membrane filtration system through the booster pump; The membrane filtration system is a combined unit of reverse osmosis membranes or nanofiltration membranes in series or parallel connection, the purified water outlet is communicated with the ultraviolet sterilization device, and the concentrated water outlet is directly communicated with a sewer; The ultraviolet sterilization device is communicated with the purified water tank through a one-way valve, and the purified water tank is connected with the water outlet through a water supply pipeline.

2. The freeze-proof central water purifying apparatus with hot water circulation device according to claim 1, characterized in that, The hot water circulation device comprises a second water inlet, a first three-way electromagnetic valve, a first one-way valve, a second three-way electromagnetic valve, a circulation pump, a temperature sensor, and a second one-way valve which are sequentially connected, and further comprises an instantaneous heating device, the water inlet of the instantaneous heating device is connected with the second three-way electromagnetic valve, and the water outlet is connected with a pipeline between the second three-way electromagnetic valve and the circulation pump.

3. The freeze-proof central water purifying apparatus with hot water circulation device according to claim 2, characterized in that, The pipeline of the hot water circulation device is spirally wound on the water supply pipeline, and a heat preservation layer is formed outside the water supply pipeline by circulating hot water, when the temperature of the temperature sensor is lower than a certain set value and is insufficient to make the water of the water supply pipeline out of freezing temperature, the hot water circulation device needs to heat the pipeline water in the device, at this time, the first three-way electromagnetic valve, the first one-way valve, the second three-way electromagnetic valve, the instantaneous heating device, the circulation pump, the temperature sensor, and the second one-way valve form a circulating pipeline; after being heated to a certain set temperature, the hot water circulation device does not need to heat the pipeline water in the device, at this time, the first three-way electromagnetic valve, the first one-way valve, the second three-way electromagnetic valve, the circulation pump, the temperature sensor, and the second one-way valve form a circulating pipeline.

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