CN107142993B - Intelligent negative-pressure-free multi-path quality-divided water supply equipment and water supply method thereof - Google Patents
Intelligent negative-pressure-free multi-path quality-divided water supply equipment and water supply method thereof Download PDFInfo
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- 238000011010 flushing procedure Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 5
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- 238000011001 backwashing Methods 0.000 description 3
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- 230000033228 biological regulation Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/074—Arrangement of water treatment devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
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Abstract
The invention discloses intelligent negative-pressure-free multi-path quality-divided water supply equipment and a water supply method thereof. The intelligent negative-pressure-free quality-divided water supply equipment comprises a negative-pressure-free water supply module and a direct drinking water treatment module, wherein the negative-pressure-free water supply module comprises a main water inlet pipe, a main water supply pump and a main water outlet pipe which are sequentially connected to form a main water channel; the intelligent negative-pressure-free quality-divided water supply equipment further comprises a water quality monitoring module, the water quality monitoring module comprises a first water quality sensor connected to the main water channel, a first bypass pipe is further connected between the water inlet of the main water outlet pipe and the water outlet of the first water pump, and a first electric control valve is arranged on the first bypass pipe. The function diversification of the water supply equipment is realized, and the installation and use cost is reduced.
Description
Technical Field
The invention relates to the technical field of water supply equipment, in particular to intelligent negative-pressure-free multi-channel quality-divided water supply equipment and a water supply method thereof.
Background
At present, with the improvement of the living standard of people, the demand of direct drinking water is greatly increased, and the direct drinking water supply technology is continuously developed. The method for converting tap water conveyed in a city water supply system into direct drinking water is generally realized by adopting filtration and sterilization treatment. For example: chinese patent No.: patents CN200820207471X, CN2012201564775, CN2007201484214 and CN201420291277X all disclose water supply schemes for direct drinking water. For example, by taking a non-negative pressure direct drinking water preparation and supply device disclosed in chinese patent No. CN2012201564775 as an example, the above patent includes components such as a non-negative pressure water supply mechanism, a disinfection mechanism and a filter, and the technical scheme disclosed in the above patent can realize the supply of direct drinking water. The invention aims to solve the technical problem of how to design direct drinking water supply equipment with rich functions and low cost.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the intelligent negative-pressure-free multi-path quality-division water supply equipment and the water supply method thereof are provided, so that the function diversification of the intelligent negative-pressure-free multi-path quality-division water supply equipment is realized, the occupied space is reduced, and the installation and use cost is reduced.
The technical scheme provided by the invention is that the intelligent non-negative-pressure multi-channel quality-divided water supply equipment comprises a non-negative-pressure water supply module and a direct drinking water treatment module, wherein the non-negative-pressure water supply module comprises a main water inlet pipe, a main water supply pump and a main water outlet pipe which are sequentially connected to form a main water channel; the intelligent negative-pressure-free multi-path quality-dividing water supply equipment further comprises a water quality monitoring module, the water quality monitoring module comprises a first water quality sensor connected to the main water path, a first bypass pipe is connected between the water inlet of the main water outlet pipe and the water outlet of the first water pump, and a first electric control valve is arranged on the first bypass pipe.
Furthermore, the multi-media filter and the activated carbon filter are respectively connected to the filtering water path through corresponding valve assemblies, each valve assembly comprises a first valve and two second valves, the first valves are connected in series to the filtering water path, two ports of each first valve are respectively connected to the corresponding second valves, and the multi-media filter and the activated carbon filter are respectively connected between the two corresponding second valves of the corresponding valve assemblies.
Furthermore, the filter membrane component is an ultrafiltration membrane component or a nanofiltration membrane component.
Furthermore, a second bypass pipe is connected between the water outlet of the main water inlet pipe and the water inlet of the first water pump, and a second electric control valve is arranged on the second bypass pipe.
Further, still be provided with first relief pressure valve on the first bypass pipe, main outlet pipe with still be provided with the second relief pressure valve between the prefiltration subassembly.
Further, a security filter is arranged between the pre-filtering assembly and the first water pump.
Furthermore, the water outlet of the filter membrane component is connected with a water purification tank, the water outlet of the water purification tank is connected with a second water pump, and an ultraviolet sterilizer is arranged on a pipeline between the second water pump and the water purification tank.
The invention also provides a water supply method of the intelligent negative-pressure-free multi-channel quality-divided water supply equipment, which comprises a conventional water supply mode, a direct drinking water supply mode and a water quality adjusting water supply mode;
the normal water supply mode: the water output by the main water outlet pipe is directly supplied to a user side for use;
the direct drinking water supply mode is as follows: the water output by the main water outlet pipe is sequentially treated by the pre-filtering component and the filter membrane component to obtain direct drinking water which is supplied to a user side for use;
the water quality adjusting and supplying mode comprises the following steps: under the conventional water supply mode, when the water quality detected by the first water quality sensor does not reach the standard, water output by the main water outlet pipe is firstly filtered by the pre-filtering component and then is pressurized by the first water pump and then is conveyed to the main water outlet pipe through the first bypass pipe.
Further, the water quality adjusting water supply mode specifically comprises:
when the water impurities detected by the first water quality sensor exceed the standard, the water output by the main water outlet pipe is filtered by the multi-medium filter;
and/or when the water detected by the first water quality sensor has peculiar smell and different colors, the water output by the main water outlet pipe is filtered by the activated carbon filter;
and/or when the hardness or heavy metal content of the water detected by the first water quality sensor exceeds the standard, the water output by the main water outlet pipe is filtered by the water softener.
Further, the water supply method further comprises an energy-saving water supply mode, in the energy-saving water supply mode, when the total water consumption of the user side is lower than a set value, the main water supply pump stops running, water introduced by the main water inlet pipe is conveyed to the first water pump through the second bypass pipe, and is pressurized by the first water pump and then conveyed to the main water outlet pipe through the first bypass pipe.
Compared with the prior art, the invention has the advantages and positive effects that: the invention provides intelligent negative-pressure-free multi-channel quality-dividing water supply equipment and a water supply method thereof.A negative-pressure-free water supply module is used for supplying water for domestic water of a user and a direct drinking water treatment module at the same time, and a negative-pressure-free water supply module is not required to be configured independently aiming at the direct drinking water function, so that the installation cost and the use cost are greatly reduced, the occupied space of the whole equipment is greatly reduced, meanwhile, a first water quality sensor in a main water channel is used for detecting the water quality condition of water conveyed by the negative-pressure-free water supply module, and when the water quality is detected to be not meet the requirement, part of water can be processed by a pre-filtering component and then returned to a main water outlet pipe for output, so that the water quality of the domestic water of the user can be conveniently adjusted, the function diversification of the intelligent negative-pressure-free multi-channel quality-dividing water supply equipment is realized, the occupied space is reduced, and the installation and use cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a pipeline arrangement of an embodiment of the intelligent non-negative-pressure multi-channel quality-division water supply device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the intelligent non-negative-pressure multi-channel quality-divided water supply apparatus of this embodiment includes a non-negative-pressure water supply module 100 and a direct drinking water processing module 200, where the non-negative-pressure water supply module 100 includes a main water inlet pipe 11, a main water supply pump 12 and a main water outlet pipe 13 which are sequentially connected to form a main water channel, the direct drinking water processing module 200 includes a pre-filtering assembly 21, a first water pump 22 and a membrane filtering assembly 23 which are sequentially connected to form a filtering water channel, the main water outlet pipe 11 is used to supply water to the pre-filtering assembly 21 and a user end water supply pipe 1000 (i.e., a user end), and the pre-filtering assembly 21 includes a multi-media filter 211 and an activated carbon filter 212 connected to the filtering water channel; the no negative pressure multichannel of intelligence divides matter water supply equipment still includes the water quality monitoring module, the water quality monitoring module is including connecting first water quality sensor 101 in the main water route, main outlet pipe 13 the water inlet with still be connected with first bypass pipe 301 between first water pump 22's the delivery port, be provided with first automatically controlled valve (not mark) on the first bypass pipe 301.
Specifically, the intelligent non-negative pressure multi-channel dual water supply equipment of the embodiment is connected with a municipal pipe network through a non-negative pressure water supply module 100 to supply water to residents in a community, wherein water output by a main water outlet pipe 11 can be connected with a user end water supply pipe 1000 in the residential community to supply water for residents' living, meanwhile, the non-negative pressure water supply module 100 in the community is used for supplying direct drinking water, water output by the main water outlet pipe 11 is also conveyed to a direct drinking water treatment module 200, water output by the main water outlet pipe 11 enters a pre-filtering assembly 21 for treatment, then is pressurized by a first water pump 22 and then is subjected to reverse osmosis treatment by a filter membrane assembly 23 to obtain direct drinking water, and the direct drinking water output by the direct drinking water treatment module 200 can be connected with a user end direct drinking water pipe 2000 in the community to supply direct drinking water to users. The no negative pressure multichannel of this embodiment intelligence divides matter water supply equipment can be applied to newly-built residential quarter, utilize no negative pressure water supply module 100 to satisfy under the prerequisite of the normal domestic water of district, can also realize the confession of straight drinking water, compare in the direct drinking water system of no negative pressure among the prior art, the no negative pressure multichannel of this embodiment intelligence divides matter water supply equipment sharing one set of no negative pressure water supply module 100 can satisfy the supply of the conventional domestic water of district and straight drinking water, the effectual installation and use cost that has reduced. More importantly, by arranging the first bypass pipe 301 between the water inlet of the main water outlet pipe 13 and the water outlet of the first water pump 22, when the water quality conveyed by the municipal pipe network is reduced, the water quality of domestic water of a user is also reduced, at the moment, the first water quality sensor 101 monitors the reduction of the water quality in the main water path, the first electric control valve is opened, part of water output by the main water outlet pipe 13 is treated by the pre-filtering assembly 21, the treated water quality is effectively improved and conveyed to the water inlet of the main water outlet pipe 13 through the first bypass pipe 301, so that the treated high-quality water can be mixed with water input from the municipal pipe network, the function of adjusting the water quality is realized, the domestic water obtained by the user finally reaches the standard, and the water quality of the user is improved. And can adopt the sensor that can detect quality of water impurity and peculiar smell heterochrosis function to first water quality sensor 101 as required, and the mounted position of first water quality sensor 101 can set up the delivery port at main inlet tube 11, main feed pump 12 inlet outlet, or the inlet outlet of main outlet pipe 13 to realize dynamic real-time supervision quality of water.
The filter membrane assembly 23 may be an ultrafiltration membrane assembly or a nanofiltration membrane assembly. In order to conveniently achieve the purpose of adjusting the quality of the domestic water of the user, the multimedia filter 211 and the activated carbon filter 212 are respectively connected to the filtered water path through corresponding valve assemblies, each valve assembly comprises a first valve 201 and two second valves 202, the first valve 201 is connected in series in the filtered water path, two ports of the first valve 201 are respectively connected to the corresponding second valves 202, and the multimedia filter 211 and the activated carbon filter 212 are respectively connected between the two second valves 202 of the corresponding valve assemblies. Specifically, the multi-media filter 211 and the activated carbon filter 212 are respectively controlled by corresponding valve assemblies, and water is selectively filtered by the multi-media filter 211 and the activated carbon filter 212 according to needs, so that when a certain index of water quality is detected to be not up to standard, the filter can be selected to be drunk to treat, and rapid water adjustment is realized. In addition, in order to enable the user domestic water and the direct drinking water processing module 200 to share the non-negative pressure water supply module 100, firstly, the water pressure generated by the main water supply pump 12 in the non-negative pressure water supply module 100 needs to be large enough to meet the water pressure requirement of the domestic water in the conventional community, and for the water input into the direct drinking water processing module 200 by the non-negative pressure water supply module 100, a second pressure reducing valve 210 is further disposed between the main water outlet pipe 13 and the pre-filtering assembly 21, specifically, the second pressure reducing valve 210 can effectively reduce the water pressure entering the direct drinking water processing module 200, so as to avoid the damage to relevant components in the direct drinking water processing module 200 due to the overlarge domestic water supply pressure of the user, and preferably, a first pressure reducing valve 310 is further disposed on the first bypass pipe 301. In addition, a steady flow compensator 14 is also provided between the main water inlet pipe 11 and the main water supply pump 12. In order to improve the quality of the direct drinking water, a cartridge filter 24 is further arranged between the pre-filtering assembly 21 and the first water pump 22.
Further, in order to effectively reduce energy consumption, a second bypass pipe 302 is connected between the water outlet of the main water inlet pipe 11 and the water inlet of the first water pump 22, and a second electronic control valve (not labeled) is disposed on the second bypass pipe 302. Specifically, in the actual use process, the water pump in the conventional non-negative pressure water supply device runs continuously for 24 hours, and at night, under the condition that the water consumption of the user is greatly reduced, the non-negative pressure water supply device keeps running state consistently, and consumes a large amount of electric energy, while under the condition that the water consumption of the user is low, the main water supply pump 12 in the non-negative pressure water supply module 100 is powered off and stops working in the intelligent non-negative pressure multi-way quality-division water supply device of the embodiment, at this moment, the second electric control valve is opened, the first water pump 22 is powered on and runs, and the water output by the main water inlet pipe 11 is pressurized by the first water pump 22 and then is conveyed to the main water outlet pipe 13 through the second bypass pipe 302, so that the water supply requirement of the user under the condition of low water consumption is met. The water consumption of the user can be monitored by the flow monitoring equipment, when the living water consumption of the user is small, the first water pump 22 is preferentially started to supply water, and when the water supply amount of the first water pump 22 cannot meet the requirement of the user, the main water supply pump 12 is started, so that the energy-saving effect is achieved.
Furthermore, a clean water tank 25 is connected to the outlet of the filter membrane module 23, a second water pump 26 is connected to the outlet of the clean water tank 25, and an ultraviolet sterilizer 27 is arranged on a pipeline between the second water pump 26 and the clean water tank 25. Specifically, the water storage of the output of filter membrane module 23 supplies the user to use in water purification tank 25, and the water in water purification tank 25 can be carried to the straight drinking water pipe 2000 of user's end through the pressurization of second water pump 26 to can distribute to different user's homes, and ultraviolet sterilizer 27 can carry out germicidal treatment to the water of water purification tank 25 output as required, in order to improve the quality of water of straight drinking water. Preferably, the water quality monitoring module further comprises various sensors for detecting the filtering waterway in the direct drinking water treatment module 200, such as a PH/ORP sensor, a conductivity sensor, a turbidity sensor, a dissolved oxygen sensor, a residual chlorine sensor, a COD sensing device, a salinity sensor, an ammonia nitrogen sensor and the like, and related sensors are arranged at specific positions of the filtering waterway, so that when the water treatment effect at the corresponding position does not reach the standard, a worker can be timely informed to timely and accurately overhaul equipment at the specific position.
Further, in order to fully utilize the wastewater generated by the direct drinking water treatment module 200, the intelligent non-negative pressure multi-path quality-dividing water supply equipment of the embodiment further comprises a concentrated water collection tank 401 and a flushing water collection tank 402, wherein the wastewater discharge port of the filter membrane module 32 is connected with the concentrated water collection tank 401, and the back flushing water discharge ports of the pre-filter module 21 and the security filter 22 are connected with the flushing water collection tank 402. Specifically, in the process of treating water conveyed by a municipal pipe network to form direct drinking water, the water which is filtered by the pre-filtering component 21 and the security filter 22 and conveyed by the municipal pipe network enters the filter membrane component 32, part of the water entering the filter membrane component 32 forms direct drinking water and is conveyed to the purified water tank 33, ions, organic matters, bacteria, viruses and the like which are intercepted on the water inlet side of the membrane form concentrated water along with the rest water and form a wastewater outlet of the filter membrane component 32, the wastewater collected by the concentrated water collecting tank 401 is only water which has higher hardness and turbidity and cannot meet the requirements of domestic water of users, however, the concentrated water is beneficial to plant growth due to the organic matters and inorganic salts contained in the concentrated water, and the concentrated water collected by the concentrated water collecting tank 401 can be used for irrigation of plants in small areas; the backwashing water generated when the pre-filtering component 21 and the security filter 22 are backwashed can not be used for irrigating plants due to the fact that the backwashing water contains medicament and the PH value exceeds the standard, the backwashing water can be collected by the flushing water collecting box 402, and the water in the flushing water collecting box 402 can be used as flushing water of public toilets in a community. Compare direct drinking water equipment in prior art directly arranges waste water outward, and the water resource that utilizes that this embodiment intelligence quality of water regulation and control no negative pressure water supply equipment can the maximize reduces extravagantly, realizes green.
The invention also provides a water supply method of the intelligent negative-pressure-free multi-channel quality-divided water supply equipment, which comprises a conventional water supply mode, a direct drinking water supply mode and a water quality adjusting water supply mode;
the normal water supply mode: the water output by the main water outlet pipe is directly supplied to a user side for use. Specifically, the conventional water supply mode is the same as the mode of supplying water by using ordinary non-negative pressure water supply equipment, namely, the non-negative pressure water supply equipment is used for pressurizing and conveying water in a municipal pipe network to each household for use.
The direct drinking water supply mode is as follows: the water output by the main water outlet pipe is directly drinking water obtained after being processed by the pre-filtering component and the filter membrane component in sequence and is supplied to a user end for use. Specifically, the water output by the non-negative pressure water supply module through the main water outlet pipe enters the direct drinking water treatment module, and the water is treated by the pre-filtering component and the filter membrane component to obtain direct drinking water which is supplied to users.
The water quality adjusting and supplying mode comprises: under the conventional water supply mode, when the water quality detected by the first water quality sensor does not reach the standard, water output by the main water outlet pipe is firstly filtered by the pre-filtering component and then is pressurized by the first water pump and then is conveyed to the main water outlet pipe through the first bypass pipe. Specifically, water in the municipal pipe network receives the influence of factors such as season, environment, different periods, quality of water in the municipal pipe network can be different, after the quality of water of municipal pipe network descends, this will lead to the quality of water decline of user's domestic water, in order to ensure that the quality of water of user's domestic water keeps higher level, in order to improve user experience nature, under the conventional water supply mode, when the quality of water that first water quality sensor detected does not reach the standard, then some water of main outlet pipe output will be handled through the prefilter subassembly in the straight drinking water processing module, thereby obtain the water source of higher quality of water, then, the water of the high quality of water after rethread first bypass pipe will be handled is carried to main outlet pipe, so alright in order to effectively adjust the quality of water of user's domestic water, thereby make the no negative pressure multichannel branch matter water supply equipment's of this embodiment intelligence function diversified, the commonality is stronger. Wherein, water quality regulation water supply mode specifically is: when the water impurities detected by the first water quality sensor exceed the standard, the water output by the main water outlet pipe is filtered by the multi-media filter; and/or when the water detected by the first water quality sensor has peculiar smell and different colors, the water output by the main water outlet pipe is filtered by the activated carbon filter; and/or when the hardness or heavy metal content of the water detected by the first water quality sensor exceeds the standard, the water output by the main water outlet pipe is filtered by the water softener.
In the energy-saving water supply mode, when the total water consumption of the user side is lower than a set value, the main water supply pump stops running, water introduced by the main water inlet pipe is conveyed to the first water pump through the second bypass pipe, and is pressurized by the first water pump and then conveyed to the main water outlet pipe through the first bypass pipe. Specifically, at no negative pressure water supply module operation in-process, main working shaft is in order to provide enough big water pressure, the power of main working shaft 12 is great to lead to power consumption great, but, at night phase, user's water consumption is few, this moment, energy-conserving water supply mode starts, main working shaft shut down, and utilize the water pressurization of the first water pump in the straight drinking water processing module as power with main inlet tube introduction to carry to the user side, thus, can be under the less condition of water consumption, the energy consumption of the no negative pressure multichannel branch matter water supply equipment of effectual reduction this embodiment intelligence, realize green low carbon operation.
Compared with the prior art, the invention has the advantages and positive effects that: the invention provides an intelligent non-negative pressure multi-channel quality-dividing water supply device and a water supply method thereof.A non-negative pressure water supply module is used for supplying water for the domestic water of a user and a direct drinking water treatment module at the same time, and the non-negative pressure water supply module is not required to be configured independently aiming at the direct drinking water function, so that the installation cost and the use cost are greatly reduced, the occupied space of the whole device is greatly reduced, meanwhile, a first water quality sensor in a main water channel is used for detecting the water quality condition of the water conveyed by the non-negative pressure water supply module, and when the water quality is detected to be not meet the requirement, part of the water can be treated by a pre-filtering component and then returned to a main water outlet pipe for outputting, so that the water quality of the domestic water of the user can be conveniently adjusted, the function diversification of the intelligent non-negative pressure multi-channel quality-dividing water supply device is realized, the occupied space is reduced, and the installation and use cost is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The intelligent negative-pressure-free multi-channel quality-divided water supply equipment is characterized by comprising a negative-pressure-free water supply module and a direct drinking water treatment module, wherein the negative-pressure-free water supply module comprises a main water inlet pipe, a main water supply pump and a main water outlet pipe which are sequentially connected to form a main water channel; the intelligent negative-pressure-free multi-path quality-dividing water supply equipment further comprises a water quality monitoring module, the water quality monitoring module comprises a first water quality sensor connected in the main water path, a first bypass pipe is connected between the water inlet of the main water outlet pipe and the water outlet of the first water pump, a first electric control valve is arranged on the first bypass pipe, and the first electric control valve is configured to be opened after the first water quality sensor monitors that the water quality in the main water path is reduced, so that part of water output by the main water outlet pipe is processed by the pre-filtering component and is conveyed to the water inlet of the main water outlet pipe through the first bypass pipe;
a second bypass pipe is connected between the water outlet of the main water inlet pipe and the water inlet of the first water pump, and a second electric control valve is arranged on the second bypass pipe;
in addition, a security filter is arranged between the pre-filtering assembly and the first water pump.
2. The intelligent negative-pressure-free multi-channel quality-dividing water supply device according to claim 1, wherein the multi-media filter and the activated carbon filter are respectively connected to the filtering water path through corresponding valve assemblies, each valve assembly comprises a first valve and two second valves, the first valve is connected in series with the filtering water path, two ports of the first valve are respectively connected to the corresponding second valves, and the multi-media filter and the activated carbon filter are respectively connected between the two second valves of the corresponding valve assemblies.
3. The intelligent negative-pressure-free multi-channel quality-dividing water supply equipment as claimed in claim 1, wherein the filter membrane component is an ultrafiltration membrane component or a nanofiltration membrane component.
4. The intelligent negative-pressure-free multi-channel quality-division water supply equipment as claimed in claim 1, wherein a first pressure reducing valve is further arranged on the first bypass pipe, and a second pressure reducing valve is further arranged between the main water outlet pipe and the pre-filtering component.
5. The intelligent negative-pressure-free multi-channel quality-dividing water supply device as claimed in claim 1, wherein a water purification tank is connected to the water outlet of the filter membrane module, a second water pump is connected to the water outlet of the water purification tank, and an ultraviolet sterilizer is arranged on a pipeline between the second water pump and the water purification tank.
6. The water supply method of the intelligent negative-pressure-free multi-channel quality-division water supply equipment as claimed in any one of claims 1 to 5, which is characterized by comprising a conventional water supply mode, a direct drinking water supply mode and a water quality adjusting water supply mode;
the normal water supply mode: the water output by the main water outlet pipe is directly supplied to a user side for use;
the direct drinking water supply mode is as follows: the water output by the main water outlet pipe is sequentially treated by the pre-filtering component and the filter membrane component to obtain direct drinking water which is supplied to a user end for use;
the water quality adjusting and supplying mode comprises the following steps: under the conventional water supply mode, when the water quality detected by the first water quality sensor does not reach the standard, water output by the main water outlet pipe is firstly filtered by the pre-filtering component and then is pressurized by the first water pump and then is conveyed to the main water outlet pipe through the first bypass pipe.
7. The water supply method according to claim 6, wherein the water quality adjusting water supply mode is specifically:
when the water impurities detected by the first water quality sensor exceed the standard, the water output by the main water outlet pipe is filtered by the multi-medium filter;
and/or when the water detected by the first water quality sensor has peculiar smell and different colors, the water output by the main water outlet pipe is filtered by the activated carbon filter.
8. The water supply method according to claim 6, further comprising an energy saving water supply mode, wherein when the total water consumption of the user side is lower than a set value, the main water supply pump stops operating, the water introduced from the main water inlet pipe is delivered to the first water pump through the second bypass pipe, and is pressurized by the first water pump and then delivered to the main water outlet pipe through the first bypass pipe.
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