CN107512767B - Direct drinking water energy-saving sterilizing device with variable-frequency water supply pump driving gas-liquid mixing cavity - Google Patents
Direct drinking water energy-saving sterilizing device with variable-frequency water supply pump driving gas-liquid mixing cavity Download PDFInfo
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- CN107512767B CN107512767B CN201710817331.8A CN201710817331A CN107512767B CN 107512767 B CN107512767 B CN 107512767B CN 201710817331 A CN201710817331 A CN 201710817331A CN 107512767 B CN107512767 B CN 107512767B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 271
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 69
- 239000003651 drinking water Substances 0.000 title claims abstract description 43
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 43
- 238000002156 mixing Methods 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 93
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 64
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000002070 germicidal effect Effects 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
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- 230000000844 anti-bacterial effect Effects 0.000 claims description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 238000001125 extrusion Methods 0.000 claims description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 22
- 239000003242 anti bacterial agent Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 14
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 230000003078 antioxidant effect Effects 0.000 claims description 9
- 229910021645 metal ion Inorganic materials 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
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- 238000001035 drying Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 229920001083 polybutene Polymers 0.000 claims description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 6
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- 238000005406 washing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
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- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 3
- 239000004609 Impact Modifier Substances 0.000 claims description 3
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- PLKATZNSTYDYJW-UHFFFAOYSA-N azane silver Chemical compound N.[Ag] PLKATZNSTYDYJW-UHFFFAOYSA-N 0.000 claims description 3
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- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims description 3
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- 239000011259 mixed solution Substances 0.000 claims description 3
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- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
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- 229920005989 resin Polymers 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000011282 treatment Methods 0.000 abstract description 3
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-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention relates to the technical field of water treatment, and aims to provide a direct drinking water energy-saving sterilization device with a variable-frequency water supply pump driving a gas-liquid mixing cavity. The adopted technical scheme is as follows: a direct drinking water energy-saving sterilization device driving a gas-liquid mixing cavity by a variable-frequency water supply pump comprises a control cabinet for regulating and controlling each device, and a front-stage finished product water storage tank, a rear-stage finished product water storage tank, a variable-frequency water supply pump set and a pressure transmitter which are sequentially communicated along the water flow direction; an immersed ultraviolet germicidal lamp is arranged in the rear-stage finished product water storage tank, and the variable-frequency water supply pump group comprises a first water supply pump and a second water supply pump which are arranged in parallel; the water outlet end of the pressure transmitter is communicated with a preceding-stage finished product water storage tank through a circulating water sterilization pipe network, the circulating water sterilization pipe network comprises an electromagnetic valve and a gas-liquid mixing cavity which are sequentially arranged along the water flow direction, and the gas-liquid mixing cavity is communicated with an ozone generator; and the water outlet end of the pressure transmitter is also communicated with a water supply pipe network. The invention can reduce the equipment cost and the energy consumption.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a direct drinking water energy-saving sterilization device with a variable-frequency water supply pump driving a gas-liquid mixing cavity.
Background
The pipeline direct drinking water is short for 'pipeline high-quality direct drinking water', and removes harmful substances such as bacteria, viruses and the like in tap water by using modern high-tech biochemical and physicochemical technology, retains trace elements and mineral substances beneficial to human bodies, and provides high-quality water capable of being directly drunk for people; along with the improvement of health consciousness of people, the pipeline direct drinking water is more and more widely applied.
The sterilizing device is an important component of pipeline direct drinking water, and the cost of the sterilizing device is mainly determined by equipment cost and energy consumption of a water supply pump; the equipment cost of the sterilization device is reduced, the energy consumption of a water supply pump is reduced, the cost of the whole system can be obviously reduced, and the economic benefit is improved. Therefore, there is a need to develop an energy-saving direct drinking water sterilization device which can reduce the equipment cost, so that the direct drinking water in the pipeline can be further popularized and developed.
Disclosure of Invention
The invention aims to provide a direct drinking water energy-saving sterilization device which drives a gas-liquid mixing cavity by a variable-frequency water supply pump.
In order to achieve the purpose, the invention adopts the technical scheme that:
a direct drinking water energy-saving sterilization device driving a gas-liquid mixing cavity by a variable-frequency water supply pump comprises a control cabinet for regulating and controlling each device, and a front-stage finished product water storage tank, a rear-stage finished product water storage tank, a variable-frequency water supply pump set and a pressure transmitter which are sequentially communicated along the water flow direction; an immersed ultraviolet germicidal lamp is arranged in the rear-stage finished product water storage tank, and the variable-frequency water supply pump group comprises a first water supply pump and a second water supply pump which are arranged in parallel; the water outlet end of the pressure transmitter is communicated with a preceding-stage finished product water storage tank through a circulating water sterilization pipe network, the circulating water sterilization pipe network comprises an electromagnetic valve and a gas-liquid mixing cavity which are sequentially arranged along the water flow direction, and the gas-liquid mixing cavity is communicated with an ozone generator; and the water outlet end of the pressure transmitter is also communicated with a water supply pipe network.
Preferably, the circulating water sterilization pipe network further comprises a plug valve, a pressure reducing valve, a pressure sensor and a check valve which are sequentially arranged along the water flow direction, and the check valve is arranged in front of the gas-liquid mixing cavity; the solenoid valve sets up between plug valve and relief pressure valve, still set up the bypass maintenance ball valve that parallels with the solenoid valve between plug valve and the relief pressure valve.
Preferably, the bottom of the front-stage finished product water storage tank is communicated with the bottom of the rear-stage finished product water storage tank through an antibacterial PB (positive) pipe, and the top of the front-stage finished product water storage tank is communicated with the top of the rear-stage finished product water storage tank through an air pressure balancing pipe; and the front-stage finished product water storage tank and the rear-stage finished product water storage tank are both provided with sampling valves for sampling by a water quality on-line monitor.
Preferably, two elongated cylindrical immersed ultraviolet germicidal lamps are symmetrically arranged in the rear-stage finished product water storage tank, the immersed ultraviolet germicidal lamps extend from the upper part of one side of the rear-stage finished product water storage tank to the lower part of the opposite side of the rear-stage finished product water storage tank, and the wavelength of ultraviolet rays generated by the immersed ultraviolet germicidal lamps is 254 nm.
Preferably, the inner walls of the front-stage finished product water storage tank and the rear-stage finished product water storage tank are plated with titanium dioxide films.
Preferably, the front-stage finished product water storage tank, the rear-stage finished product water storage tank, the variable-frequency water supply pump set, the pressure transmitter and the circulating water sterilization pipe network are communicated through an antibacterial PB pipe; the antibacterial PB tube is sequentially provided with an antibacterial layer, an oxygen barrier layer and a pressure resistant layer from inside to outside.
Preferably, the antibacterial layer comprises the following raw materials in parts by weight: 100 parts of polybutene, 2 parts of silica-loaded nano silver antibacterial agent, 3 parts of antioxidant and 1 part of metal ion passivator; the oxygen barrier layer comprises the following raw materials in parts by weight: 20 parts of EVOH, 8 parts of PP-g-AA, 12 parts of PP-g-MAH, 2 parts of antioxidant and 1 part of metal ion passivator; the compression-resistant layer comprises the following raw materials in parts by weight: 40 parts of polybutene, 7 parts of acrylate impact modifier, 2 parts of color master batch, 4 parts of polymethyl methacrylate resin, 6 parts of ethylene-ethyl acrylate copolymer, 1 part of dicumyl peroxide, 1 part of oxidized polyethylene wax, 4 parts of antioxidant, 2 parts of ultraviolet absorbent, 1 part of light stabilizer and 1 part of metal ion passivator.
Preferably, the preparation method of the silica-supported nano silver antibacterial agent comprises the following steps: a. dissolving 0.4g of silver nitrate and 120ml of n-silicone grease acetic acid in a mixed solution of absolute ethyl alcohol and ammonia water, and stirring for 10 hours at the temperature of 36 ℃ to obtain a product for later use; b. filtering, washing and drying the product obtained in the step a to obtain silicon dioxide powder for adsorbing silver-ammonia complex ions; c. dispersing silicon dioxide powder adsorbing silver ammino ions into water, dropwise adding a sodium borohydride solution with the concentration of 0.01g/ml at the speed of 3.6ml/min for 25min to prepare a silicon dioxide-loaded nano-silver antibacterial agent suspension; d. and filtering, washing and drying the suspension of the silica-supported nano silver antibacterial agent to obtain silica-supported nano silver antibacterial agent powder.
Preferably, the preparation method of the antibacterial PB tube is as follows: 1) after the surface treatment of the silicon dioxide loaded nano-silver antibacterial agent with the formula amount by the silane coupling agent, putting the silicon dioxide loaded nano-silver antibacterial agent with the formula amount and other antibacterial layer raw materials with the formula amount into a high-speed stirrer, stirring for 30 minutes at the rotating speed of 500 revolutions per minute, and then carrying out extrusion granulation by a double-screw extruder to obtain antibacterial layer master batches, wherein the extrusion temperature is 240 ℃, and the rotating speed of a screw is 800 revolutions per minute; 2) putting the raw materials of the oxygen-barrier layer with the formula amount into a high-speed stirrer, stirring for 30 minutes at the rotating speed of 500 revolutions per minute, and then extruding and granulating through a double-screw extruder to obtain master batches of the oxygen-barrier layer, wherein the extrusion temperature is 240 ℃, and the rotating speed of a screw is 900 revolutions per minute; 3) heating the compression-resistant layer raw materials according to the formula amount to 140 ℃, fully mixing the raw materials by using a high-speed mixer, and then putting the mixture into a double-screw extruder for extrusion granulation to obtain compression-resistant layer master batches, wherein the extrusion temperature is 240 ℃, and the screw rotation speed is 900 revolutions per minute; 4) and respectively and correspondingly adding the antibacterial layer master batch, the oxygen-resistant layer master batch and the compression-resistant layer master batch into an inner layer feeding port, a middle layer feeding port and an outer layer feeding port of a three-layer co-extrusion pipe extruder, and preparing the antibacterial PB pipe through extrusion molding at the extrusion molding temperature of 240 ℃.
The invention has the beneficial effects that the invention is provided with a front-stage finished product water storage tank, a rear-stage finished product water storage tank, a variable-frequency water supply pump set and a pressure transmitter which are sequentially communicated along the water flow direction; the water outlet end of the pressure transmitter is communicated with a water supply pipe network and is also communicated with a preceding-stage finished product water storage tank through a circulating water sterilization pipe network; the circulating water sterilization pipe network is provided with a gas-liquid mixing cavity connected with an ozone generator. When the circulating water sterilization pipe network is disconnected, direct drinking water flowing out of the pressure transmitter only needs to be supplied to the water supply pipe network, and the variable-frequency water supply pump set can reduce output power and energy consumption; when needing to disinfect to the straight drinking water in the preceding stage finished product water storage tank, open the solenoid valve and make the circulating water pipe network intercommunication that disinfects, the frequency conversion water supply pump package increases output, keeps the water pressure of whole pipe network stable, and straight drinking water still passes through circulating water pipe network and the gas-liquid mixture chamber of disinfecting except supplying with the water supply pipe network to carry into the finished product water storage tank that gos forward with the ozone of pouring into the gas-liquid mixture intracavity and disinfect. The invention adjusts the water pressure of the whole pipe network by arranging the variable-frequency water supply pump set, so as to meet different pressure stabilizing requirements when the circulating water sterilization pipe network is respectively in an open state and a closed state, and can reduce energy consumption by reducing the output power of the variable-frequency water supply pump set when the circulating water sterilization pipe network is disconnected. The invention can sterilize the direct drinking water in the front-stage finished product water storage tank without independently arranging an ozone circulating pump in a circulating water sterilization pipe network, thereby reducing the equipment cost and having popularization and use values.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further illustrated with reference to fig. 1.
A direct drinking water energy-saving sterilization device driving a gas-liquid mixing cavity by a variable-frequency water supply pump comprises a control cabinet for regulating and controlling each device, and a front-stage finished product water storage tank 1, a rear-stage finished product water storage tank 2, a variable-frequency water supply pump group 3 and a pressure transmitter 4 which are sequentially communicated along the water flow direction; it should be understood that the preceding stage product water storage tank 1 is communicated with the previous stage direct drinking water purification device, direct drinking water is subjected to a series of purification treatments such as filtration and softening before entering the preceding stage product water storage tank 1, and the direct drinking water can be supplied to the direct drinking water supply network 12 only by completing the sterilization step. An immersed ultraviolet germicidal lamp 5 is arranged in the rear-stage finished product water storage tank 2, and the variable-frequency water supply pump group 3 comprises a first water supply pump 6 and a second water supply pump 7 which are arranged in parallel; the water outlet end of the pressure transmitter 4 is communicated with the front-stage finished water storage tank 1 through a circulating water sterilization pipe network 8, the circulating water sterilization pipe network 8 comprises an electromagnetic valve 9 and a gas-liquid mixing chamber 11 which are sequentially arranged along the water flow direction, and the gas-liquid mixing chamber 11 is communicated with an ozone generator 10; it should be understood that the ozone generator 10 will generate ozone and inject the ozone into the gas-liquid mixing chamber 11, where the ozone is mixed with water in the gas-liquid mixing chamber 11 and enters the preceding stage product water storage tank 1 with the water stream to sterilize the water in the preceding stage product water storage tank 1. The water outlet end of the pressure transmitter 4 is also communicated with a water supply pipe network 12.
Further, the circulating water sterilization pipe network 8 further comprises a plug valve 13, a pressure reducing valve 14, a pressure sensor 15 and a check valve 16 which are sequentially arranged along the water flow direction, and the check valve 16 is arranged in front of the gas-liquid mixing cavity 11; the electromagnetic valve 9 is arranged between the plug valve 13 and the reducing valve 14, and a bypass maintenance ball valve 17 parallel to the electromagnetic valve 9 is further arranged between the plug valve 13 and the reducing valve 14. It should be understood that the plug valve 13 can adjust the flow rate of the circulating water sterilizing pipe network 8 by changing the opening degree; the pressure reducing valve 14 can adjust the pressure behind the valve, so that the water pressure of water flow entering the backwater disinfection pipe network after passing through the pressure reducing valve 14 is kept within a preset range, and when the circulating water sterilization pipe network 8 is in a circulation state, the pressure behind the valve of the pressure reducing valve 14 is usually adjusted to 0.2-0.4 MPa; the pressure sensor 15 can sense the water pressure regulated by the pressure reducing valve 14 and transmit data to the control cabinet; the water return valve can prevent water flow in the circulating water sterilization pipe network 8 from flowing backwards; the gas-liquid mixing cavity 11 is used for mixing ozone and water flow conveniently; the electromagnetic valve 9 is used for controlling the opening and closing of the circulating water sterilization pipe network 8, and the bypass valve is used for balancing the water pressure in front of and behind the electromagnetic valve 9 and cutting off the water flow of the circulating water sterilization pipe network 8 when the circulating water sterilization pipe network 8 needs to be overhauled or closed.
Further, the bottom of the front-stage finished product water storage tank 1 is communicated with the bottom of the rear-stage finished product water storage tank 2 through an antibacterial PB (beta) pipe, and the top of the front-stage finished product water storage tank 1 is communicated with the top of the rear-stage finished product water storage tank 2 through an air pressure balancing pipe 18; and the front-stage finished product water storage tank 1 and the rear-stage finished product water storage tank 2 are both provided with sampling valves 19 for sampling of the water quality on-line monitor. It should be understood that the air pressure balance pipe 18 can circulate the air in the front stage product water tank 1 and the rear stage product water tank 2, thereby balancing the air pressure of the two product water tanks; the water quality on-line monitor can monitor the water quality of water flow in the two finished product water storage tanks in real time by sampling through the sampling valve 19.
Further, two elongated cylindrical immersed ultraviolet germicidal lamps 5 are symmetrically arranged in the rear-stage finished product water storage tank 2, the immersed ultraviolet germicidal lamps 5 extend from the upper part of one side of the rear-stage finished product water storage tank 2 to the lower part of the opposite side of the rear-stage finished product water storage tank, and the wavelength of ultraviolet rays generated by the immersed ultraviolet germicidal lamps 5 is 254 nm. It should be understood that, the front-stage finished product water storage tank 1 for performing ozone sterilization and the rear-stage finished product water storage tank 2 for performing ultraviolet sterilization are respectively arranged, so that the ozone absorption and ultraviolet decomposition can be avoided, the mutual sterilization effect can be prevented from being interfered, and the respective sterilization effect can be exerted to the maximum extent by performing the ozone sterilization and the ultraviolet sterilization step by step, so that the sterilization effect is more thorough. In addition, the ultraviolet rays with longer wavelength can play a role in sterilization, and can also decompose the residual ozone in the water into oxygen so as to accelerate the decomposition of the residual ozone in the water.
Further, the inner walls of the front-stage finished product water storage tank 1 and the rear-stage finished product water storage tank 2 are both plated with titanium dioxide films. It should be understood that the titanium dioxide film is electroplated on the inner walls of the former stage product water storage tank 1 and the latter stage product water storage tank 2, so that the corrosion of the inner walls of the former stage product water storage tank 1 and the latter stage product water storage tank 2 due to long-term use and the pollution to drinking water can be avoided, and the health and safety of a drinker can be threatened.
Embodiments of the present invention are described below, it being understood that each of the devices described below may be controlled by commands from a control cabinet. The direct drinking water flowing into the front-stage finished product water storage tank 1 flows into the direct drinking water supply network 12 through the front-stage finished product water storage tank 1, the rear-stage finished product water storage tank 2, the variable frequency water supply pump group 3 and the pressure transmitter 4 in sequence, and provides direct drinking water for drinkers. When the front-stage finished product water storage tank 1 starts to feed water, the electromagnetic valve 9 is opened, so that the water flowing out of the water outlet end of the pressure transmitter 4 flows into the front-stage finished product water storage tank 1 through the circulating water sterilization pipe network 8 and the gas-liquid mixing chamber 11 arranged in the circulating water sterilization pipe network 8; at the moment, the water pressure in the pipeline is reduced, the pressure transmitter 4 transmits a pressure signal acquired in real time to the control cabinet, the control cabinet calculates the power required to be output by the variable-frequency water supply pump set 3 through the PID module, and the water pressure in the pipeline is increased by adjusting the rotating speed of the variable-frequency water supply pump set 3 to reach the preset water pressure and maintain the stability of the water pressure of the pipeline; the ozone generator 10 generates ozone, injects the ozone into the gas-liquid mixing chamber 11, mixes the ozone with water flow in the gas-liquid mixing chamber 11, flows into the front-stage finished product water storage tank 1 along with the water flow, and sterilizes direct drinking water in the front-stage finished product water storage tank 1; meanwhile, the immersion type ultraviolet germicidal lamp 5 in the latter-stage finished product water storage tank 2 is turned on, and ultraviolet sterilization is performed on the direct drinking water in the latter-stage finished product water storage tank 2.
Further, after the front-grade finished product water storage tank 1 stops water inflow, the electromagnetic valve 9 and the bypass maintenance ball valve 17 are closed, so that the water flow flowing out of the water outlet end of the pressure transmitter 4 can only flow into the direct drinking water supply pipe network 12; at the moment, the water pressure in the pipeline rises, the pressure transmitter 4 transmits a pressure signal acquired in real time to the control cabinet, the control cabinet calculates the power required to be output by the variable-frequency water supply pump set 3 through the PID module, and the water pressure in the pipeline is reduced by adjusting the rotating speed of the variable-frequency water supply pump set 3 to reach the preset water pressure and maintain the stability of the water pressure of the pipeline; and simultaneously turns off the ozone generator 10 and the immersion type ultraviolet germicidal lamp 5.
Further, when the water in the former-grade finished product water storage tank 1 stops feeding water and accumulates for a certain time, the electromagnetic valve 9 is opened for a period of time; for example: and the front-stage finished product water storage tank 1 is opened for 9 five minutes every hour after stopping water inflow. At the moment, the control cabinet adjusts the water pressure in the pipeline through the variable-frequency water supply pump unit 3 and maintains the water pressure of the pipeline stable, so that the water flowing out of the water outlet end of the pressure transmitter 4 flows into the pre-stage product water storage tank 1 through the circulating water sterilization pipe network 8 and the gas-liquid mixing cavity 11 arranged in the circulating water sterilization pipe network 8; simultaneously turning on an ozone generator 10 and an immersed ultraviolet germicidal lamp 5, and respectively carrying out ozone sterilization and ultraviolet sterilization on the direct drinking water in a front-stage finished product water storage tank 1 and a rear-stage finished product water storage tank 2; after five minutes, the electromagnetic valve 9, the ozone generator 10 and the immersion type ultraviolet germicidal lamp 5 are closed. It should be understood that when the former-stage finished water storage tank 1 stops water inflow, the interval time and duration of opening the battery valve can be regulated and controlled through the control cabinet according to actual conditions. The intermittent sterilization is carried out when the front-stage finished product water storage tank 1 stops water inflow, so that the energy consumption can be saved, the direct drinking water staying in the front-stage finished product water storage tank 1 and the rear-stage finished product water storage tank 2 can be prevented from breeding germs, and the health and safety of drinkers can be ensured.
According to the invention, the variable-frequency water supply pump set 3 controlled by the control cabinet is arranged to regulate the water pressure in the pipeline, when the circulating water sterilization pipe network 8 is in a closed state, water in two finished water storage tanks only needs to be supplied to the direct drinking water supply pipe network 12, the variable-frequency water supply pump set 3 keeps lower output power, the water pressure of the whole pipeline can be maintained, the water pressure reaches a preset value, and the energy consumption can be saved. When the circulating water sterilization pipe network 8 is in a communicated state, energy needs to be supplied to the circulating water sterilization pipe network 8, so that direct drinking water flows through the circulating water sterilization pipe network 8 and the gas-liquid mixing chamber 11 to enter the front-stage finished water storage tank 1; at the moment, the variable-frequency supply pump set improves the output power, so that the water pressure of the whole pipe network is kept stable; the direct drinking water can be normally supplied to the water supply pipe network 12, and is circulated through the circulating water sterilization pipe network 8, and the ozone in the gas-liquid mixing chamber 11 is brought to the front-stage finished product water storage tank 1 for sterilization. The circulating water sterilization pipe network 8 does not need to be provided with a special ozone circulating pump, and the power for driving the direct drinking water in the gas-liquid mixing cavity 11 to flow into the front-stage finished product water storage tank 1 comes from the variable-frequency water supply pump group 3, so that the energy consumption and the equipment cost are reduced, and the circulating water sterilization pipe network has popularization and use values.
As a further optimization of the invention, the front-stage finished product water storage tank 1, the rear-stage finished product water storage tank 2, the variable-frequency water supply pump set 3, the pressure transmitter 4 and the circulating water sterilization pipe network 8 are communicated through an antibacterial PB pipe; the antibacterial PB tube is sequentially provided with an antibacterial layer, an oxygen barrier layer and a pressure resistant layer from inside to outside. It should be understood that the invention uses the antibacterial PB pipe with the antibacterial layer arranged on the inner layer as the communicating pipe, which can effectively prevent the direct drinking water from breeding bacteria in the conveying process and ensure the quality of the direct drinking water. In addition, compared with the common PB pipe and the common PPR pipe, the antibacterial PB pipe used by the invention is added with the oxygen blocking layer and the compression resistant layer, so that the antibacterial PB pipe is more durable, has a longer service cycle, is lower in replacement and maintenance frequency, reduces the use cost and improves the economic benefit.
Further, the silica-supported nanosilver antibacterial agent described below is prepared by the following method: a. dissolving 0.4g of silver nitrate and 120ml of n-silicone grease acetic acid in a mixed solution of absolute ethyl alcohol and ammonia water, and stirring for 10 hours at the temperature of 36 ℃ to obtain a product for later use; b. filtering, washing and drying the product obtained in the step a to obtain silicon dioxide powder for adsorbing silver-ammonia complex ions; c. dispersing silicon dioxide powder adsorbing silver ammino ions into water, dropwise adding a sodium borohydride solution with the concentration of 0.01g/ml at the speed of 3.6ml/min for 25min to prepare a silicon dioxide-loaded nano-silver antibacterial agent suspension; d. and filtering, washing and drying the suspension of the silica-supported nano silver antibacterial agent to obtain silica-supported nano silver antibacterial agent powder.
Further, the preparation method of the antibacterial PB tube comprises the following steps: 1) 2 parts of silicon dioxide loaded nano-silver antibacterial agent is subjected to surface treatment by a silane coupling agent, then is put into a high-speed stirrer together with 100 parts of polybutene, 3 parts of antioxidant and 1 part of metal ion passivator, is stirred for 30 minutes at the rotating speed of 500 revolutions per minute, and is extruded and granulated by a double-screw extruder to prepare antibacterial layer master batches, wherein the extrusion temperature is 240 ℃, and the rotating speed of a screw is 800 revolutions per minute; 2) putting 20 parts of EVOH, 8 parts of PP-g-AA, 12 parts of PP-g-MAH, 2 parts of antioxidant and 1 part of metal ion passivator into a high-speed stirrer, stirring for 30 minutes at the rotating speed of 500 revolutions per minute, and then carrying out extrusion granulation by a double-screw extruder to prepare an oxygen barrier layer master batch, wherein the extrusion temperature is 240 ℃, and the screw rotating speed is 900 revolutions per minute; 3) heating 40 parts of polybutene, 7 parts of acrylate impact modifier, 2 parts of color master batch, 4 parts of polymethyl methacrylate resin, 6 parts of ethylene-ethyl acrylate copolymer, 1 part of dicumyl peroxide, 1 part of oxidized polyethylene wax, 4 parts of antioxidant, 2 parts of ultraviolet absorbent, 1 part of light stabilizer and 1 part of metal ion passivator to 140 ℃, fully mixing by using a high-speed mixer, and then putting into a double-screw extruder for extrusion granulation to prepare the pressure-resistant layer master batch, wherein the extrusion temperature is 240 ℃, and the screw rotation speed is 900 rpm; 4) and respectively and correspondingly adding the antibacterial layer master batch, the oxygen-resistant layer master batch and the compression-resistant layer master batch into an inner layer feeding port, a middle layer feeding port and an outer layer feeding port of a three-layer co-extrusion pipe extruder, and preparing the antibacterial PB pipe through extrusion molding at the extrusion molding temperature of 240 ℃.
The comparison of the performance parameters of the antibacterial PB pipe prepared by the steps with the performance parameters of the common PB pipe and the common PPR pipe is as follows:
1. the aging resistance of the pipe is as follows:
2. impact strength and tensile strength of the pipe:
| name of pipe | Impact strength KJ/M2 | Tensile strength MPa |
| Antibacterial PB tube | 81.8 | 25.4 |
| Ordinary PB tube | 48.5 | 15.2 |
| Ordinary PPR pipe | 42.1 | 14.7 |
3. Low temperature drop hammer impact properties of the pipe:
4, the antibacterial property of the pipe is as follows:
the common PB tube used by the invention is a PB tube with the model number of S20 × 1/2F in the Yuhe straw industry; the conventional PPR pipe used in the present invention is Eurasian model S20 × 1/2F PPR pipe. The ageing resistance test used in the invention adopts GT/B16422.2-2014 standard, the tensile strength performance test method used in the invention adopts ASTM D638-2003 standard, the impact strength performance test method used in the invention adopts ASTM D256-2010 standard, the low-temperature drop hammer performance test method used in the invention adopts GB/T14152-2001 standard, and the antibacterial performance test method used in the invention adopts JC939-2004 standard.
Compared with the common pipe material, the antibacterial PB pipe has better aging resistance, excellent impact resistance and very good antibacterial effect, can reduce the maintenance and replacement frequency of the pipe, reduce the use cost, inhibit the propagation of germs in direct drinking water, kill the germs, protect the health and safety of drinkers, and has popularization and use values.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that changes or modifications may be made to these embodiments without departing from the principles and spirit of the invention, and that such changes and modifications are within the scope of the invention.
Claims (6)
1. The utility model provides a directly drink energy-conserving sterilizing equipment of water of gas-liquid mixing chamber with frequency conversion feed water pump drive which characterized in that: the system comprises a control cabinet for regulating and controlling each device, and a front-stage finished product water storage tank (1), a rear-stage finished product water storage tank (2), a variable-frequency water supply pump set (3) and a pressure transmitter (4) which are sequentially communicated along the water flow direction; the bottom of the front-stage finished product water storage tank (1) is communicated with the bottom of the rear-stage finished product water storage tank (2) through an antibacterial PB pipe, and the antibacterial PB pipe is sequentially provided with an antibacterial layer, an oxygen barrier layer and a pressure resistant layer from inside to outside; two elongated cylindrical immersed ultraviolet germicidal lamps (5) are symmetrically arranged in the rear-stage finished product water storage tank (2), the immersed ultraviolet germicidal lamps (5) extend from the upper part of one side of the rear-stage finished product water storage tank (2) to the lower part of the opposite side, and the wavelength of ultraviolet rays generated by the immersed ultraviolet germicidal lamps (5) is 254 nm; the variable-frequency water supply pump set (3) comprises a first water supply pump (6) and a second water supply pump (7) which are arranged in parallel; the water outlet end of the pressure transmitter (4) is communicated with a front-stage finished water storage tank (1) through a circulating water sterilization pipe network (8), the circulating water sterilization pipe network (8) comprises an electromagnetic valve (9) and a gas-liquid mixing cavity (11) which are sequentially arranged along the water flow direction, and the gas-liquid mixing cavity (11) is communicated with an ozone generator (10); the water outlet end of the pressure transmitter (4) is also communicated with a water supply pipe network (12);
the antibacterial layer comprises the following raw materials in parts by weight: 100 parts of polybutene, 2 parts of silica-loaded nano silver antibacterial agent, 3 parts of antioxidant and 1 part of metal ion passivator; the oxygen barrier layer comprises the following raw materials in parts by weight: 20 parts of EVOH, 8 parts of PP-g-AA, 12 parts of PP-g-MAH, 2 parts of antioxidant and 1 part of metal ion passivator; the compression-resistant layer comprises the following raw materials in parts by weight: 40 parts of polybutene, 7 parts of acrylate impact modifier, 2 parts of color master batch, 4 parts of polymethyl methacrylate resin, 6 parts of ethylene-ethyl acrylate copolymer, 1 part of dicumyl peroxide, 1 part of oxidized polyethylene wax, 4 parts of antioxidant, 2 parts of ultraviolet absorbent, 1 part of light stabilizer and 1 part of metal ion passivator;
the preparation method of the silica-supported nano silver antibacterial agent comprises the following steps:
a. dissolving 0.4g of silver nitrate and 120ml of tetraethoxysilane in a mixed solution of absolute ethyl alcohol and ammonia water, and stirring for 10 hours at the temperature of 36 ℃ to obtain a product for later use;
b. filtering, washing and drying the product obtained in the step a to obtain silicon dioxide powder for adsorbing silver-ammonia complex ions;
c. dispersing silicon dioxide powder adsorbing silver ammino ions into water, dropwise adding a sodium borohydride solution with the concentration of 0.01g/ml at the speed of 3.6ml/min for 25min to prepare a silicon dioxide-loaded nano-silver antibacterial agent suspension;
d. and filtering, washing and drying the suspension of the silica-supported nano silver antibacterial agent to obtain silica-supported nano silver antibacterial agent powder.
2. The energy-saving sterilization device for direct drinking water with a variable-frequency water supply pump driving a gas-liquid mixing cavity according to claim 1, is characterized in that: the circulating water sterilization pipe network (8) further comprises a plug valve (13), a pressure reducing valve (14), a pressure sensor (15) and a check valve (16) which are sequentially arranged along the water flow direction, and the check valve (16) is arranged in front of the gas-liquid mixing cavity (11); solenoid valve (9) set up between plug valve (13) and relief pressure valve (14), still set up bypass maintenance ball valve (17) that parallel with solenoid valve (9) between plug valve (13) and relief pressure valve (14).
3. The energy-saving sterilization device for direct drinking water with a variable-frequency water supply pump driving a gas-liquid mixing cavity according to claim 1, is characterized in that: the top of the front-stage finished product water storage tank (1) is communicated with the top of the rear-stage finished product water storage tank (2) through an air pressure balance pipe (18); and the front-stage finished product water storage tank (1) and the rear-stage finished product water storage tank (2) are both provided with sampling valves (19) for sampling by a water quality on-line monitor.
4. The energy-saving sterilization device for direct drinking water with a variable-frequency water supply pump driving a gas-liquid mixing cavity according to claim 1, is characterized in that: the inner walls of the front-stage finished product water storage tank (1) and the rear-stage finished product water storage tank (2) are plated with titanium dioxide films.
5. The energy-saving sterilization device for direct drinking water with a variable-frequency water supply pump driving a gas-liquid mixing chamber according to any one of claims 1 to 4, characterized in that: the front-stage finished product water storage tank (1), the rear-stage finished product water storage tank (2), the variable-frequency water supply pump set (3), the pressure transmitter (4) and the circulating water sterilization pipe network (8) are communicated through an antibacterial PB pipe.
6. The energy-saving sterilization device for direct drinking water with a variable-frequency water supply pump driving a gas-liquid mixing cavity according to claim 5, is characterized in that: the preparation method of the antibacterial PB tube comprises the following steps:
1) after the surface treatment of the silicon dioxide loaded nano-silver antibacterial agent with the formula amount by the silane coupling agent, putting the silicon dioxide loaded nano-silver antibacterial agent with the formula amount and other antibacterial layer raw materials with the formula amount into a high-speed stirrer, stirring for 30 minutes at the rotating speed of 500 revolutions per minute, and then carrying out extrusion granulation by a double-screw extruder to obtain antibacterial layer master batches, wherein the extrusion temperature is 240 ℃, and the rotating speed of a screw is 800 revolutions per minute;
2) putting the raw materials of the oxygen-barrier layer with the formula amount into a high-speed stirrer, stirring for 30 minutes at the rotating speed of 500 revolutions per minute, and then extruding and granulating through a double-screw extruder to obtain master batches of the oxygen-barrier layer, wherein the extrusion temperature is 240 ℃, and the rotating speed of a screw is 900 revolutions per minute;
3) heating the compression-resistant layer raw materials according to the formula amount to 140 ℃, fully mixing the raw materials by using a high-speed mixer, and then putting the mixture into a double-screw extruder for extrusion granulation to obtain compression-resistant layer master batches, wherein the extrusion temperature is 240 ℃, and the screw rotation speed is 900 revolutions per minute;
4) and respectively and correspondingly adding the antibacterial layer master batch, the oxygen-resistant layer master batch and the compression-resistant layer master batch into an inner layer feeding port, a middle layer feeding port and an outer layer feeding port of a three-layer co-extrusion pipe extruder, and preparing the antibacterial PB pipe through extrusion molding at the extrusion molding temperature of 240 ℃.
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| CN201710817331.8A CN107512767B (en) | 2017-09-12 | 2017-09-12 | Direct drinking water energy-saving sterilizing device with variable-frequency water supply pump driving gas-liquid mixing cavity |
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| CN202116398U (en) * | 2011-06-17 | 2012-01-18 | 北京观音设备技术有限公司 | Water supplying and returning device in drinking water device |
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