CN111099693B - Ultrasonic tap water chlorine removal device and working method thereof - Google Patents

Ultrasonic tap water chlorine removal device and working method thereof Download PDF

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Publication number
CN111099693B
CN111099693B CN202010020373.0A CN202010020373A CN111099693B CN 111099693 B CN111099693 B CN 111099693B CN 202010020373 A CN202010020373 A CN 202010020373A CN 111099693 B CN111099693 B CN 111099693B
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ceramic plates
piezoelectric ceramic
bending vibration
ultrasonic
connecting column
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CN111099693A (en
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王亮
王健安
金家楣
杨淋
赵淳生
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/12Halogens or halogen-containing compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses an ultrasonic tap water chlorine removal device and a working method thereof, wherein the ultrasonic tap water chlorine removal device comprises two bending vibration bodies, a variable-section stress screw, a first balancing weight, a second balancing weight, 4N piezoelectric ceramic plates, a flange plate and two pre-tightening nuts; the variable cross-section stress screw comprises a first connecting column, a first round table, a double-head screw, a second round table and a second connecting column which are coaxially and fixedly connected in sequence; the two pre-tightening nuts are respectively connected with threads at two ends of the double-end screw rod, and the first balancing weight, the N piezoelectric ceramic plates, the flange plate, the N piezoelectric ceramic plates and the second balancing weight are fixed on the double-end screw rod; the other ends of the first connecting column and the second connecting column are respectively and rigidly connected with the centers of the outer end surfaces of the closed ends of the two bending vibration bodies. When the ultrasonic device works, the variable-section stress screw rod and the two bending vibration bodies are excited to generate an ultrasonic field of omnibearing radiation, and residual chlorine element in tap water is purified. The invention has simple structure, low power consumption and no secondary pollution.

Description

Ultrasonic tap water chlorine removal device and working method thereof
Technical Field
The invention relates to the technical field of removal of residual chlorine in domestic water, in particular to an ultrasonic chlorine removal device for tap water and a working method thereof.
Background
Chlorine has a strong inactivation effect on pathogenic microorganisms, so that the chlorine is widely used in a sterilization link of water treatment. However, the treated water contains residual chlorine, which can affect and damage drinking water taste, human health, food and beverage quality, ion exchange and membrane separation technical equipment. In particular, tap water is chlorinated, although effective in killing germs, more halogenated hydrocarbon compounds are produced at the same time, and the content of chlorine-containing organic matters is multiplied, so that the chlorinated tap water is a major source for various diseases of human beings. The main purpose of the chlorination of public water is to prevent water from spreading diseases, the method is popularized to the past 110 years, has more perfect production technology and equipment, and most of domestic and foreign water works still adopt the technological methods of precipitation, filtration and chlorination so far, and river water or underground water is simply processed into potable water.
The residual chlorine-containing water can damage the nutrient components such as vitamins, minerals and the like in vegetables, fruits and grains when used for cleaning the vegetables, fruits and grains, and seriously affects the absorption of the nutrient substances by human bodies. The chlorine used in tap water can be absorbed easily and quickly on any oxidized surface layer with capillary holes such as skin, nostril, oral cavity, lung, hair, eyes, meat, vegetables and fruits, etc. Because the skin surface layer of the human body spreads over pores and sweat glands, residual chlorine can easily enter through the fine pores to be absorbed by the human body at the moment of contact with tap water. The bath is carried out by tap water containing residual chlorine, four components in the total amount of chlorine in the bathroom are inhaled through respiratory tract, and the three components are absorbed by skin, 6-8 times of chlorine entering the human body through drinking in general, and the light people generate itching, so that the cancerogenic rate of the people in the middle-aged is increased by 30 percent. After the chlorine is heated, the chlorine and organic humus in water generate cancerogenic substances such as chloroform, the chloroform is increased by 3-4 times than tap water, and if the residual chlorine can not be removed, coffee, tea or soup drunk by people every day is heated and boiled for drinking, and the cancerogenic substances are increased by 3-4 times in the body. The long-term drinking of water containing residual chlorine can greatly increase the incidence of heart diseases, coronary atherosclerosis, anemia, bladder cancer, liver cancer, rectal cancer, hypertension, allergy and other diseases.
In order to avoid the damage caused by residual chlorine, the removal of residual chlorine in water has become an important problem. It is highly desirable to provide a solution for efficiently removing residual chlorine in water.
Disclosure of Invention
Aiming at the defects related to the background technology, the invention provides an ultrasonic chlorine removal device for tap water and a working method thereof.
The invention adopts the following technical proposal to solve the technical problems
An ultrasonic chlorine removal device for tap water comprises a first bending vibration body, a second bending vibration body, a variable-section stress screw, a first balancing weight, a second balancing weight, 4N piezoelectric ceramic plates, a flange plate, a first pre-tightening nut and a second pre-tightening nut, wherein N is a natural number greater than or equal to 1;
the first bending vibration body and the second bending vibration body have the same structure and are hollow metal cylinders with one end open and one end closed;
the variable-section stress screw comprises a first connecting column, a first round table, a double-head screw, a second round table and a second connecting column, wherein the smaller ends of the first round table and the second round table are respectively and coaxially fixedly connected with one ends of the first connecting column and the second connecting column, and the larger ends of the first round table and the second round table are respectively and coaxially fixedly connected with the two ends of the double-head screw; the diameter of the smaller end of the first round table is larger than or equal to the cross-section diameter of the first connecting column, and the diameter of the larger end of the first round table is smaller than or equal to the cross-section of the double-head screw rod directly; the variable cross-section stress screw rod is centrosymmetric;
the first balancing weight, the second balancing weight and the 4N piezoelectric ceramic plates are all in a ring shape;
the flange plate is provided with a through hole for the double-headed screw to pass through;
the first pre-tightening nut and the second pre-tightening nut are respectively connected with threads at two ends of the double-head screw rod, the first balancing weight, the 2N piezoelectric ceramic plates, the flange plate, the 2N piezoelectric ceramic plates and the second balancing weight are fixed on the double-head screw rod, the 4N piezoelectric ceramic plates are compressed to provide pre-tightening force, and the flange plate is positioned at the center of the double-head screw rod;
the 4N piezoelectric ceramic plates are longitudinal vibration ceramic plates and polarized along the thickness direction, and the polarization directions of two adjacent piezoelectric ceramic plates are opposite;
the flange plate is used for fixing the running water ultrasonic chlorine removal device;
the other ends of the first connecting column and the second connecting column are respectively and rigidly connected with the centers of the outer end surfaces of the closed ends of the first bending vibration body and the second bending vibration body.
As a further optimization scheme of the ultrasonic chlorine removal installation for tap water, the 4N piezoelectric ceramic plates are coated with food-grade waterproof glue.
The invention also discloses a control method of the running water ultrasonic chlorine removal device, which comprises the following steps:
the 4N piezoelectric ceramic plates are applied with voltages with the frequency being the first-order longitudinal resonance frequency and the same phase of the variable-section stress screw rod, the first-order longitudinal resonance mode of the variable-section stress screw rod is excited, and simultaneously, bending vibration modes of the first bending vibration body and the second bending vibration body are excited to generate ultrasonic frequency band vibration, ultrasonic waves are radiated in all directions up, down, front, back, left and right in water, a strong acoustic cavitation phenomenon is generated in water, and decomposition of hypochlorous acid in water and elimination of chlorine gas are accelerated.
Ultrasonic removal of residual chlorine in tap water is a novel water purification technology, and the residual chlorine in tap water mainly comprises HClO and Cl 2 And ClO And the like.
The principle of removing residual chlorine in water by ultrasonic wave is as follows: when high intensity ultrasonic waves propagate in a liquid medium, longitudinal waves are generated, thereby creating regions of alternating compression and expansion, which are prone to cavitation and the formation of microbubble nuclei in the medium. At the moment of adiabatic shrinkage and collapse, the interior of the micro bubble nucleus presents high temperature of more than 5000 ℃ and pressure of 50000kPa, so that the decomposition of hypochlorous acid in water and the elimination of chlorine gas are accelerated, and the aim of high-efficiency water purification is fulfilled.
Compared with the prior art, the technical scheme provided by the invention has the following technical effects:
the ultrasonic chlorine removal device for tap water has the advantages of simple internal structure, thorough removal of residual chlorine in water, low power consumption, no secondary pollution and the like.
Drawings
FIG. 1 is a schematic diagram of an ultrasonic chlorine removal installation for tap water;
FIG. 2 is a schematic diagram of polarization direction and power-up mode of a piezoelectric ceramic wafer;
fig. 3 is a schematic diagram of vibration modes of the first bending vibration body, the second bending vibration body and the variable-section stress screw.
In the figure, 1-first bending vibration body, 2-first connecting column, 3-first round platform, 4-double-headed screw, 5-first pretension nut, 6-first balancing weight, 7-piezoceramics piece, 8-flange plate, 9-second pretension nut.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings:
this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the components are exaggerated for clarity.
20. In the 30 s of century, it was first proposed to degas liquids and liquid metals using the ultrasonic cavitation effect. Ultrasonic wave propagates in liquid, pressure fluctuation occurs in time and space, and negative pressure phenomenon occurs. In the negative pressure region, acoustic cavitation occurs and microbubbles are formed. Under the action of ultrasound, cavitation bubbles undergo a series of dynamic processes: oscillation, expansion, contraction or even collapse. These activities can cause high pressures within the cavitation bubbles of thousands of degrees and high temperatures and pressures of thousands of atmospheres. This accelerates hypochlorous acid decomposition in the water. At the same time, ultrasound gradually permeates chlorine and oxygen into cavitation bubbles and is released from the water by means of the ultrasound degassing effect, which further promotes the decomposition of hypochlorous acid.
The invention is based on the ultrasonic cavitation principle to efficiently remove residual chlorine in water.
As shown in fig. 1, the invention discloses an ultrasonic tap water chlorine removal device, which comprises a first bending vibration body, a second bending vibration body, a variable-section stress screw, a first balancing weight, a second balancing weight, 4N piezoelectric ceramic plates, a flange plate, a first pre-tightening nut and a second pre-tightening nut, wherein N is a natural number greater than or equal to 1;
the first bending vibration body and the second bending vibration body have the same structure and are hollow metal cylinders with one end open and one end closed;
the variable-section stress screw comprises a first connecting column, a first round table, a double-head screw, a second round table and a second connecting column, wherein the smaller ends of the first round table and the second round table are respectively and coaxially fixedly connected with one ends of the first connecting column and the second connecting column, and the larger ends of the first round table and the second round table are respectively and coaxially fixedly connected with the two ends of the double-head screw; the diameter of the smaller end of the first round table is larger than or equal to the cross-section diameter of the first connecting column, and the diameter of the larger end of the first round table is smaller than or equal to the cross-section of the double-head screw rod directly; the variable cross-section stress screw rod is centrosymmetric;
the first balancing weight, the second balancing weight and the 4N piezoelectric ceramic plates are all in a ring shape;
the flange plate is provided with a through hole for the double-headed screw to pass through;
the first pre-tightening nut and the second pre-tightening nut are respectively connected with threads at two ends of the double-head screw rod, the first balancing weight, the 2N piezoelectric ceramic plates, the flange plate, the 2N piezoelectric ceramic plates and the second balancing weight are fixed on the double-head screw rod, the 4N piezoelectric ceramic plates are compressed to provide pre-tightening force, and the flange plate is positioned at the center of the double-head screw rod;
as shown in fig. 2, the 4N piezoelectric ceramic plates are longitudinal vibration ceramic plates, and are polarized along the thickness direction, and the polarization directions of two adjacent piezoelectric ceramic plates are opposite;
the flange plate is used for fixing the running water ultrasonic chlorine removal device;
the other ends of the first connecting column and the second connecting column are respectively and rigidly connected with the centers of the outer end surfaces of the closed ends of the first bending vibration body and the second bending vibration body.
The 4N piezoelectric ceramic plates are coated with food-grade waterproof glue.
As shown in fig. 3, the invention also discloses a control method of the running water ultrasonic chlorine removal device, which comprises the following steps:
the 4N piezoelectric ceramic plates are applied with voltages with the frequency being the first-order longitudinal resonance frequency and the same phase of the variable-section stress screw rod, the first-order longitudinal resonance mode of the variable-section stress screw rod is excited, and simultaneously, bending vibration modes of the first bending vibration body and the second bending vibration body are excited to generate ultrasonic frequency band vibration, ultrasonic waves are radiated in all directions up, down, front, back, left and right in water, a strong acoustic cavitation phenomenon is generated in water, and decomposition of hypochlorous acid in water and elimination of chlorine gas are accelerated.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.

Claims (3)

1. The ultrasonic tap water chlorine removal device is characterized by comprising a first bending vibration body, a second bending vibration body, a variable-section stress screw, a first balancing weight, a second balancing weight, 4N piezoelectric ceramic plates, a flange plate, a first pre-tightening nut and a second pre-tightening nut, wherein N is a natural number greater than or equal to 1;
the first bending vibration body and the second bending vibration body have the same structure and are hollow metal cylinders with one end open and one end closed;
the variable-section stress screw comprises a first connecting column, a first round table, a double-head screw, a second round table and a second connecting column, wherein the smaller ends of the first round table and the second round table are respectively and coaxially fixedly connected with one ends of the first connecting column and the second connecting column, and the larger ends of the first round table and the second round table are respectively and coaxially fixedly connected with the two ends of the double-head screw; the diameter of the smaller end of the first round table is larger than or equal to the cross-section diameter of the first connecting column, and the diameter of the larger end of the first round table is smaller than or equal to the cross-section of the double-head screw rod directly; the variable cross-section stress screw rod is centrosymmetric;
the first balancing weight, the second balancing weight and the 4N piezoelectric ceramic plates are all in a ring shape;
the flange plate is provided with a through hole for the double-headed screw to pass through;
the first pre-tightening nut and the second pre-tightening nut are respectively connected with threads at two ends of the double-head screw rod, the first balancing weight, the 2N piezoelectric ceramic plates, the flange plate, the 2N piezoelectric ceramic plates and the second balancing weight are fixed on the double-head screw rod, the 4N piezoelectric ceramic plates are compressed to provide pre-tightening force, and the flange plate is positioned at the center of the double-head screw rod;
the 4N piezoelectric ceramic plates are longitudinal vibration ceramic plates and polarized along the thickness direction, and the polarization directions of two adjacent piezoelectric ceramic plates are opposite;
the flange plate is used for fixing the running water ultrasonic chlorine removal device;
the other ends of the first connecting column and the second connecting column are respectively and rigidly connected with the centers of the outer end surfaces of the closed ends of the first bending vibration body and the second bending vibration body.
2. The ultrasonic tap water chlorine removal installation of claim 1, wherein the 4N piezoelectric ceramic plates are each coated with a food-grade waterproof adhesive.
3. The control method based on the ultrasonic chlorine removal installation of tap water according to claim 1, characterized by comprising the following steps:
the 4N piezoelectric ceramic plates are applied with voltages with the frequency being the first-order longitudinal resonance frequency and the same phase of the variable-section stress screw rod, the first-order longitudinal resonance mode of the variable-section stress screw rod is excited, and simultaneously, bending vibration modes of the first bending vibration body and the second bending vibration body are excited to generate ultrasonic frequency band vibration, ultrasonic waves are radiated in all directions up, down, front, back, left and right in water, a strong acoustic cavitation phenomenon is generated in water, and decomposition of hypochlorous acid in water and elimination of chlorine gas are accelerated.
CN202010020373.0A 2020-01-09 2020-01-09 Ultrasonic tap water chlorine removal device and working method thereof Active CN111099693B (en)

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CN113775772A (en) * 2021-08-25 2021-12-10 南京航空航天大学 Aviation fuel metering and adjusting piezoelectric valve and working method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106477667A (en) * 2016-12-07 2017-03-08 南京航空航天大学 A kind of method and device for going chlorine residue in eliminating water based on ultrasound
CN108176574A (en) * 2017-12-19 2018-06-19 天津工业大学 A kind of more amplitude piezoelectric ultrasonic transducers of series composite structure double frequency
CN110589929A (en) * 2019-10-12 2019-12-20 周楚新 Self-powered omnibearing integrated ultrasonic algae removal device and working method thereof
CN211971821U (en) * 2020-01-09 2020-11-20 南京航空航天大学 Tap water ultrasonic dechlorination device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106477667A (en) * 2016-12-07 2017-03-08 南京航空航天大学 A kind of method and device for going chlorine residue in eliminating water based on ultrasound
CN108176574A (en) * 2017-12-19 2018-06-19 天津工业大学 A kind of more amplitude piezoelectric ultrasonic transducers of series composite structure double frequency
CN110589929A (en) * 2019-10-12 2019-12-20 周楚新 Self-powered omnibearing integrated ultrasonic algae removal device and working method thereof
CN211971821U (en) * 2020-01-09 2020-11-20 南京航空航天大学 Tap water ultrasonic dechlorination device

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