CN107875793A - Mist-spraying dust-removing purification device - Google Patents

Mist-spraying dust-removing purification device Download PDF

Info

Publication number
CN107875793A
CN107875793A CN201711346144.2A CN201711346144A CN107875793A CN 107875793 A CN107875793 A CN 107875793A CN 201711346144 A CN201711346144 A CN 201711346144A CN 107875793 A CN107875793 A CN 107875793A
Authority
CN
China
Prior art keywords
purification
air inlet
catalytic
exhaust outlet
cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711346144.2A
Other languages
Chinese (zh)
Inventor
张雪庚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN AIXI TECHNOLOGY Co Ltd
Original Assignee
TIANJIN AIXI TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TIANJIN AIXI TECHNOLOGY Co Ltd filed Critical TIANJIN AIXI TECHNOLOGY Co Ltd
Priority to CN201711346144.2A priority Critical patent/CN107875793A/en
Publication of CN107875793A publication Critical patent/CN107875793A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60Combinations of devices covered by groups B01D46/00 and B01D47/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/88Handling or mounting catalysts
    • B01D53/885Devices in general for catalytic purification of waste gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/80Type of catalytic reaction
    • B01D2255/802Photocatalytic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804UV light

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

The present invention provides mist-spraying dust-removing purification device, the air inlet of filter is connected with air inlet pipeline, the exhaust outlet of filter is connected with the air inlet of smoke adsorption device, the exhaust outlet of smoke adsorption device is connected with the air inlet of photocatalysis apparatus, the exhaust outlet of photocatalysis apparatus is connected with gas exhaust piping, arrangement for catalytic purification is arranged on the lower section of photocatalysis apparatus, and purification lowering or hoisting gear is arranged on the both sides of arrangement for catalytic purification.The setting of cleaning pipe, circulating pump and cleaning head in filter, it is for the ease of carrying out the purpose that not provision for disengagement can be cleaned effectively to the screen pack for having already passed through long-term use so that the device is more intelligent, automation then;Cleaning operation can be carried out to catalytic carrier using arrangement for catalytic purification, specific process is that the cleaning solution in catheter is pressurizeed by purifying shower nozzle, sprayed by spray orifice, so as to be removed to the pollutant adsorbed on catalytic carrier surface, keep the catalytic capability of catalytic carrier.

Description

Mist-spraying dust-removing purification device
Technical field
The present invention relates to technical field of air purification, more specifically to a kind of mist-spraying dust-removing purification device.
Background technology
In the place of densely populated place, on the one hand cause air circulation poor because density of personnel is excessive, so that having leisure Makings amount is relatively low, on the other hand, the place of densely populated place also can some smoking personnel exist, smoking personnel due to inhale Cigarette and the smog that spues make it that air is more dirty, the smog is heavy.Contained harmful substance is very more in second-hand-cigarette, not only Air quality is influenceed, while certain infringement also is caused to the health of other staff.
The content of the invention
Instant invention overcomes deficiency of the prior art, there is provided a kind of mist-spraying dust-removing purification device.
The purpose of the present invention is achieved by following technical proposals.
Mist-spraying dust-removing purification device, including filter, smoke adsorption device, photocatalysis apparatus, arrangement for catalytic purification and Lowering or hoisting gear is purified, the air inlet of the filter is connected with air inlet pipeline, the exhaust outlet of the filter and the cigarette The air inlet of mist adsorbent equipment is connected, and the exhaust outlet of the smoke adsorption device is connected with the air inlet of the photocatalysis apparatus, The exhaust outlet of the photocatalysis apparatus is connected with gas exhaust piping, and the arrangement for catalytic purification is arranged under the photocatalysis apparatus Side, the purification lowering or hoisting gear are arranged on the both sides of the arrangement for catalytic purification;
The filter includes crust of the device, screen pack, cleaning pipe, circulating pump and cleaning head, described device shell Alternate internal is provided with the screen pack, and the cleaning pipe, the cleaning Guan Junyu are provided with the both sides of described device shell The circulating pump is connected, and the cleaning head is evenly arranged with the cleaning pipe;
The smoke adsorption device includes adsorption tank, underwater air inlet pipe, air inlet head, gas collecting apparatus and exhaust outlet, the suction The bottom of attached groove is provided with the underwater air inlet pipe, and the air inlet head, the collection are evenly arranged with the underwater air inlet pipe Device of air is arranged on the top of the adsorption tank, and the top of the gas collecting apparatus is provided with the exhaust outlet, the exhaust outlet with The air inlet duct of the photocatalysis apparatus is connected;
The photocatalysis apparatus includes catalysis shell, catalytic support, catalytic carrier, ultraviolet lamp and catalysis power supply, in institute State in catalysis shell and be staggeredly equipped with the catalytic support and the ultraviolet lamp successively, set in the catalytic support Catalytic carrier is stated, the catalysis power supply is arranged on the bottom of the catalysis shell, is set on the left side wall of the catalysis shell There is smoke-detectors, the output end of the smoke-detectors is connected with the switch of the catalysis power supply;
The arrangement for catalytic purification includes purification tank, purification pipeline, purification shower nozzle and force (forcing) pump, at the bottom of the purification tank Portion is provided with catheter, and the catheter is connected by the force (forcing) pump with the purification pipeline, and the purification pipeline is arranged on The purification tank bottom, is evenly arranged with the purification shower nozzle on the purification pipeline, and the purification shower nozzle includes shower nozzle, top Cap, spray core and spray orifice, the top cap are connected by the spray orifice with the top of the shower nozzle, and the spray core is arranged on the shower nozzle Inside, and the spray core is connected with the spray orifice.
The air inlet head includes air inlet pipe, capitulum and steam vent, and the air inlet pipe is connected with the underwater air inlet pipe, institute State capitulum to be arranged in the air inlet pipe, the steam vent is offered on the capitulum.
The purification lowering or hoisting gear includes fluctuating orbit and lifting pulley group, and the fluctuating orbit is arranged on the purification tank On the wall of both sides, the lifting pulley group is arranged on the both sides of the purification tank, the lifting pulley group and the lift rail Road, which slides, to be connected.
It is provided with circulating fan in the air inlet pipeline, the distance between the ultraviolet lamp and described catalytic carrier are 20-40mm。
Beneficial effects of the present invention are:Can be miscellaneous by the bulky grain dust in air etc. by the screen pack in filter Matter carries out preliminary absorption and collection, so as to reduce the influence subsequently for smoke adsorption and photocatalytic process, improves absorption And catalytic conversion efficiency;By directing the air into adsorption tank bottom, using air quality it is light the characteristics of so that air is from adsorption tank Bottom be raised slowly at gas collecting apparatus, in this course, most of smog has been adsorbed the chemistry in groove in air Adsorptive liquid is adsorbed, so as to behind effectively improving to the photocatalysis efficiency of a small amount of complete smog not to be adsorbed;When After air enters photocatalysis apparatus, the smog that is not adsorbed completely can be all by the catalyst on catalytic carrier and uviol lamp Double action, catalysis are decomposed into innocuous substance, reach the purpose of purification air;Cleaning pipe in filter, circulating pump and clear The setting of hair washing, then can be carried out effectively clearly for the ease of carrying out not provision for disengagement to the screen pack for having already passed through long-term use The purpose washed so that the device is more intelligent, automation;Catalytic carrier can be cleaned using arrangement for catalytic purification Operation, specific process are sprayed, so as to inhaling for the cleaning solution in catheter is pressurizeed by purifying shower nozzle by spray orifice The pollutant for being attached to catalytic carrier surface is removed, and keeps the catalytic capability of catalytic carrier.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of photocatalysis apparatus in the present invention;
Fig. 3 is the structural representation that shower nozzle is purified in the present invention;
In figure:1 is crust of the device, and 2 be screen pack, and 3 be cleaning pipe, and 4 be circulating pump, and 5 be cleaning head, and 6 be adsorption tank, 7 It is air inlet head for underwater air inlet pipe, 8,9 be gas collecting apparatus, and 10 be exhaust outlet, and 11 be catalysis shell, and 12 be catalytic support, and 13 are Catalytic carrier, 14 be ultraviolet lamp, and 15 be catalysis power supply, and 16 be smoke-detectors, and 17 be air inlet pipe, and 18 be capitulum, and 19 are Circulating fan, 20 be purification tank, and 21 be purification pipeline, and 22 be force (forcing) pump, and 23 be catheter, and 24 be shower nozzle, and 25 be top cap, and 26 are Spray core, 27 be spray orifice, and 28 be fluctuating orbit, and 29 be lifting pulley group.
Embodiment
Technical scheme is further described below by specific embodiment.
As shown in Figure 1 to Figure 3, wherein, 1 is crust of the device, and 2 be screen pack, and 3 be cleaning pipe, and 4 be circulating pump, and 5 be cleaning Head, 6 be adsorption tank, and 7 be underwater air inlet pipe, and 8 be air inlet head, and 9 be gas collecting apparatus, and 10 be exhaust outlet, and 11 be catalysis shell, and 12 are Catalytic support, 13 be catalytic carrier, and 14 be ultraviolet lamp, and 15 be catalysis power supply, and 16 be smoke-detectors, and 17 be air inlet pipe, 18 It is circulating fan for capitulum, 19,20 be purification tank, and 21 be purification pipeline, and 22 be force (forcing) pump, and 23 be catheter, and 24 be shower nozzle, 25 be top cap, and 26 be spray core, and 27 be spray orifice, and 28 be fluctuating orbit, and 29 be lifting pulley group.
Mist-spraying dust-removing purification device, including filter, smoke adsorption device, photocatalysis apparatus, arrangement for catalytic purification and Lowering or hoisting gear is purified, the air inlet of filter is connected with air inlet pipeline, exhaust outlet and the smoke adsorption device of filter Air inlet is connected, and the exhaust outlet of smoke adsorption device is connected with the air inlet of photocatalysis apparatus, the exhaust outlet of photocatalysis apparatus with Gas exhaust piping is connected, and arrangement for catalytic purification is arranged on the lower section of photocatalysis apparatus, and purification lowering or hoisting gear is arranged on catalytic purification dress The both sides put;
Filter includes crust of the device, screen pack, cleaning pipe, circulating pump and cleaning head, the alternate internal of crust of the device Screen pack is provided with, cleaning pipe is provided with the both sides of crust of the device, cleaning Guan Junyu circulating pumps are connected, on cleaning pipe uniformly It is provided with cleaning head;
Smoke adsorption device includes adsorption tank, underwater air inlet pipe, air inlet head, gas collecting apparatus and exhaust outlet, the bottom of adsorption tank End is provided with underwater air inlet pipe, is evenly arranged with air inlet head in air inlet pipe under water, and gas collecting apparatus is arranged on the top of adsorption tank, The top of gas collecting apparatus is provided with exhaust outlet, and exhaust outlet is connected with the air inlet duct of photocatalysis apparatus;
Photocatalysis apparatus includes catalysis shell, catalytic support, catalytic carrier, ultraviolet lamp and catalysis power supply, outer in catalysis Catalytic support and ultraviolet lamp are staggeredly equipped with shell successively, catalytic carrier is provided with catalytic support, catalysis power supply is set In the bottom of catalysis shell, smoke-detectors is provided with the left side wall of catalysis shell, the output end of smoke-detectors is with urging The switch for changing power supply is connected;
Arrangement for catalytic purification includes purification tank, purification pipeline, purification shower nozzle and force (forcing) pump, is provided with the bottom of purification tank Catheter, catheter are connected by force (forcing) pump with purification pipeline, and purification pipeline is arranged on purification tank bottom, on purification pipeline Even to be provided with purification shower nozzle, purification shower nozzle includes shower nozzle, top cap, spray core and spray orifice, the top phase that top cap passes through spray orifice and shower nozzle Even, spray core is arranged on the inside of shower nozzle, and spray core is connected with spray orifice.
Air inlet head includes air inlet pipe, capitulum and steam vent, and air inlet pipe is connected with underwater air inlet pipe, capitulum be arranged on into On tracheae, steam vent is offered on capitulum.
Purification lowering or hoisting gear includes fluctuating orbit and lifting pulley group, and fluctuating orbit is arranged on the wall of purification tank both sides On, lifting pulley group is arranged on the both sides of purification tank, and lifting pulley group is slided with fluctuating orbit to be connected.
Circulating fan is provided with air inlet pipeline, the distance between ultraviolet lamp and catalytic carrier are 20-40mm.
By the screen pack in filter the impurity such as the bulky grain dust in air can be carried out preliminary absorption and Collect, so as to reduce the influence subsequently for smoke adsorption and photocatalytic process, improve absorption and catalytic conversion efficiency;Pass through Direct the air into adsorption tank bottom, using air quality it is light the characteristics of so that air is raised slowly to collect from the bottom of adsorption tank At device of air, in this course, the chemisorbed liquid that most of smog has been adsorbed in groove in air is adsorbed, so as to To the photocatalysis efficiency of a small amount of complete smog not to be adsorbed behind can effectively improving;When air enters photocatalysis apparatus Afterwards, the smog not adsorbed completely can be all by the catalyst and the double action of uviol lamp on catalytic carrier, point of catalysis Solve as innocuous substance, reach the purpose of purification air;The setting of cleaning pipe, circulating pump and cleaning head in filter, then be for It is easy to carry out the screen pack for having already passed through long-term use the purpose that not provision for disengagement can be cleaned effectively so that the dress Put more intelligent, automation;Cleaning operation can be carried out to catalytic carrier using arrangement for catalytic purification, specific process is The cleaning solution in catheter is pressurizeed by purifying shower nozzle, sprayed by spray orifice, so as to adsorbing on catalytic carrier surface Pollutant be removed, keep the catalytic capability of catalytic carrier.
The present invention is described in detail above, but the content is only presently preferred embodiments of the present invention, it is impossible to recognized For the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application, all should still it return Belong within the patent covering scope of the present invention.

Claims (4)

1. mist-spraying dust-removing purification device, it is characterised in that:It is net including filter, smoke adsorption device, photocatalysis apparatus, catalysis Lowering or hoisting gear is put and purified in makeup, and the air inlet of the filter is connected with air inlet pipeline, the exhaust outlet of the filter It is connected with the air inlet of the smoke adsorption device, the exhaust outlet of the smoke adsorption device and the air inlet of the photocatalysis apparatus Mouth is connected, and the exhaust outlet of the photocatalysis apparatus is connected with gas exhaust piping, and the arrangement for catalytic purification is arranged on the photocatalysis The lower section of device, the purification lowering or hoisting gear are arranged on the both sides of the arrangement for catalytic purification;
The filter includes crust of the device, screen pack, cleaning pipe, circulating pump and cleaning head, the inside of described device shell The screen pack is staggeredly equipped with, the cleaning is provided with the both sides of described device shell and is managed, described in the cleaning Guan Junyu Circulating pump is connected, and the cleaning head is evenly arranged with the cleaning pipe;
The smoke adsorption device includes adsorption tank, underwater air inlet pipe, air inlet head, gas collecting apparatus and exhaust outlet, the adsorption tank Bottom be provided with the underwater air inlet pipe, the air inlet head, the gas collection dress are evenly arranged with the underwater air inlet pipe Put the top for being arranged on the adsorption tank, the top of the gas collecting apparatus is provided with the exhaust outlet, the exhaust outlet with it is described The air inlet duct of photocatalysis apparatus is connected;
The photocatalysis apparatus includes catalysis shell, catalytic support, catalytic carrier, ultraviolet lamp and catalysis power supply, is urged described The catalytic support and the ultraviolet lamp are staggeredly equipped with outside the pale of civilization shell successively, described urge is provided with the catalytic support Change carrier, the catalysis power supply is arranged on the bottom of the catalysis shell, and cigarette is provided with the left side wall of the catalysis shell Fog detector, the output end of the smoke-detectors are connected with the switch of the catalysis power supply;
The arrangement for catalytic purification includes purification tank, purification pipeline, purification shower nozzle and force (forcing) pump, is set in the bottom of the purification tank Catheter is equipped with, the catheter is connected by the force (forcing) pump with the purification pipeline, and the purification pipeline is arranged on described Purification tank bottom, the purification shower nozzle is evenly arranged with the purification pipeline, the purification shower nozzle include shower nozzle, top cap, Spray core and spray orifice, the top cap are connected by the spray orifice with the top of the shower nozzle, and the spray core is arranged on the shower nozzle Inside, and the spray core is connected with the spray orifice.
2. mist-spraying dust-removing purification device according to claim 1, it is characterised in that:The air inlet head includes air inlet pipe, head Shape portion and steam vent, the air inlet pipe are connected with the underwater air inlet pipe, and the capitulum is arranged in the air inlet pipe, in institute State and the steam vent is offered on capitulum.
3. mist-spraying dust-removing purification device according to claim 1, it is characterised in that:The purification lowering or hoisting gear includes lifting Track and lifting pulley group, the fluctuating orbit are arranged on the wall of the purification tank both sides, and the lifting pulley group is set In the both sides of the purification tank, the lifting pulley group is slided with the fluctuating orbit to be connected.
4. mist-spraying dust-removing purification device according to claim 1, it is characterised in that:It is provided with and follows in the air inlet pipeline Ring blower fan, the distance between the ultraviolet lamp and the catalytic carrier are 20-40mm.
CN201711346144.2A 2017-12-15 2017-12-15 Mist-spraying dust-removing purification device Pending CN107875793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711346144.2A CN107875793A (en) 2017-12-15 2017-12-15 Mist-spraying dust-removing purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711346144.2A CN107875793A (en) 2017-12-15 2017-12-15 Mist-spraying dust-removing purification device

Publications (1)

Publication Number Publication Date
CN107875793A true CN107875793A (en) 2018-04-06

Family

ID=61770813

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711346144.2A Pending CN107875793A (en) 2017-12-15 2017-12-15 Mist-spraying dust-removing purification device

Country Status (1)

Country Link
CN (1) CN107875793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479261A (en) * 2018-05-03 2018-09-04 北京鼎翰科技有限公司 A kind of coal-burning power plant's purifying and dedusting device and its dust removal method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479261A (en) * 2018-05-03 2018-09-04 北京鼎翰科技有限公司 A kind of coal-burning power plant's purifying and dedusting device and its dust removal method
CN108479261B (en) * 2018-05-03 2019-10-29 杭州德飙新能源科技有限公司 A kind of coal-burning power plant's purifying and dedusting device and its dust removal method

Similar Documents

Publication Publication Date Title
CN202105575U (en) Wet type waste gas comprehensive control apparatus
CN207962985U (en) A kind of multifunctional air purifier
CN108404573A (en) A kind of equipment for treating industrial waste gas
CN205299780U (en) Air purifier
CN109126383A (en) VOC waste gas purification all-in-one machine
CN106975300A (en) A kind of industrial waste gas purifying processing system
CN206222554U (en) A kind of Novel air purification device
CN206404499U (en) Lacquer spraying waste gas processing unit
CN107314456A (en) Can highly effectively removing volatile organic gas vertical indoor air cleaner
CN107238139A (en) A kind of Novel air purification device
CN207661893U (en) A kind of air treating equipment
CN107875793A (en) Mist-spraying dust-removing purification device
CN205412675U (en) Furniture processing japanning room exhaust treatment device
CN208927884U (en) VOC waste gas purification all-in-one machine
CN205402963U (en) Indoor air purifying device of rotatory formula of admitting air
CN207849556U (en) The controllable air circulation system of purification rate
CN207230753U (en) A kind of air purifier
CN108579412A (en) The vertical indoor air cleaner of photochemical catalytic oxidation
CN107166549A (en) A kind of efficient Household air purifier
CN203436979U (en) Novel washing type air purifier
CN211635742U (en) Movable industrial dust removal equipment for packaging machinery
CN107694247A (en) A kind of air purification method based on water mist sprinkling and photocatalysis technology
CN204768079U (en) Boiler smoke purifier
CN207849663U (en) intelligent air purifying system
CN203869170U (en) Air cleaner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180406