CN202397301U - Air-explosion and water-jet multifunctional integrated vegetable washing machine - Google Patents

Abstract

The utility model discloses an air-explosion and water-jet multifunctional integrated vegetable washing machine comprising a base. An outer barrel and an inner barrel are arranged above the base; the inner barrel is arranged in the outer barrel; an air explosion machine and a washing bracket are arranged in the inner barrel; an air compressor is arranged in the base; the air compressor is communicated with an ozone generator; the ozone generator is communicated with the air explosion machine in the inner barrel; a motor is further arranged in the base; and the motor is connected with the washing bracket through a waterproof shaft, so as to drive the washing bracket to rotate. By using a gas-water two-phase washing technology, the air-explosion and water-jet multifunctional integrated vegetable washing machine has the advantages of high washing efficiency, no damages on fruits and vegetables, and good sterilizing and pesticide removing effects. The general fruits and vegetables can be washed and sterilized and is subjected to pesticide removing within 4-6 min; and various residual pesticides on the surfaces of the fruits and the vegetables can be effectively removed. With the adoption of the air-explosion and water-jet multifunctional integrated vegetable washing machine, not only the fruits and the vegetables can be washed and but also tea leaves, dishes, rice and the like can be washed; and the air-explosion and water-jet multifunctional integrated vegetable washing machine is applicable to families, schools and offices and is suitable for fresh-keeping export or machining of agricultural products.

Description

The multi-functional integrated beet washer of a kind of quick-fried air water jet flow

Technical field

The utility model relates to the multi-functional integrated beet washer of a kind of quick-fried air water jet flow, is to belong to a kind of the collection to wash dish, wash water fruit, wash tealeaves, wash rice, wash the dishes, remove the modern kitchen equipment of residues of pesticides, degerming and preserving fruit and vegetable utilizing.

Background technology

Proposed since synthetic pesticide DDT tackles harmful insect consciously from nineteen thirty-nine Switzerland scientist Miu Le, the pesticide species of at present having developed use reaches kind more than 500, and the agricultural chemicals use amount grows with each passing day, and China's year consumption agricultural chemicals per capita reaches more than the 1kg.Practice shows, uses agricultural chemicals can retrieve fruit with a toll of more than 40%, and vegetables are with a toll of more than 50%.Yet because garden stuff pesticide residue causes acute poisoning or dead number to reach more than 40,000 people every year, number chronic and inferior slow poisoning crosses hundred million.Say in " silent spring " as U.S. Carlson in 1962: we rely on agricultural chemicals and generate, and are finally buried by agricultural chemicals.Therefore, the enthusiasm of China's exploitation beet washer is surging.In recent years, the washing vegetable treating machine of commercial applications begins to appear on the market.Though the existing beet washer that appears on the market has patent to support, its washing and remove agricultural residual effect fruit, and operability and security still have huge improvement space.

1. washing technology

Existing washing technology has: be that kinetic energy washing is (like patent: 00100050.0 with the ultrasonic wave; 200710076659.5; 01224846 etc.); Be that the kinetic energy washing is (like patent: 92103143.2 with current; 01235262.4; 02228206.8; 201020161283.5 etc.); With the air water washing (like patent: 02228206.8,200510071871.3 etc.) of kinetic energy, or the like.Though these washing technologies are each has something to recommend him, ultrasonic wave is to accomplish cleaning by cavitation effect, though the removal of fruit-vegetable pesticide residues is had certain effect; But noise is big; Ultrasonic attenuation is serious, and is not good enough to the clean result of sheet leaf vegetables etc. especially, and leaf vegetables is had damage; With the water that flows is the kinetic energy washing, is mostly washing machine principle or its technological extension, by action of centrifugal force or water spray washing, then is difficult to flush away for nonpolar dirt that remains in fruit and vegetable surfaces and agricultural chemicals, and clean result is bad; The washing that with the air water is kinetic energy is to belong to two washings mutually, so its clean result is superior to the first two kind method.But; Existing two phase washing technologies still fail to cause developer's attention; Ignored the effect of gas phase, so the carrier of ozone solubility in water or the source of the gas of manufacturing ozone are carried or increased to most of patent all to air as ozone: be 201020161283.5 utility model patent like the patent No. as main washing kinetic energy; Not gas as washing kinetic energy, still lean on the high-speed stirred washing; The patent No. is that 200510071871.3 patents disclose the fog-bubble washing method, carries out jet washing though this technology adopts blower fan that air-flow is imported many porose air jet pipes, leans on the blower fan aerogenesis; Noise is big, and air-flow is unstable, leans on many foraminate tracheaes jet; Then gas is thicker, and skewness, bubble are also bigger; The utilization ratio of air-flow is not high, and washing quality is not high; The patent No. is 02228206.8 patent, though air compressor machine and ozone generator series connection, connect the quick-fried gas of sandstone bar; The not anti-ozone of sandstone bar is prone to come off, in addition the connection skewness of sandstone bar; Only play auxiliary washing; So this patent is mainly leaned on the washing of multiply torrent water column, makes fruits and vegetables local assault power excessive, subject to damage.If the gases at high pressure that produce air compressor, with the quick-fried gas of ceramic aerator, as two kinetic energy of washing mutually, then can optimize or solve existing two wash existence mutually problem.

2. sterilization technology

Ozone is universally acknowledged broad-spectrum high efficacy disinfection sanitizer.Just beginning to be used for degerming as far back as 1870 in Europe sterilizes.Over more than 140 year, the ozone degerming removes poison and has been deep into a plurality of fields that comprise cooking apparatus.Ozone is strong oxidizing property, and the product of reduction is oxygen and water, can not cause secondary pollution.Ozone molecule can decompose the extremely strong antozone of generation oxidability, can destroy the internal structure of microorganisms such as bacterium, virus rapidly, so various pathogenic microorganisms are had extremely strong killing action.When the ozone concentration in the water reaches 0.1-0.4mg/l when (being equivalent to airborne ozone concentration 51-204ppm), in 1-5 minute, can reach 100% to its killing rates such as common Escherichia coli, streptococcus fecalis, influenza A virus, hepatitis A virus, Pseudomonas aeruginosa, Staphylococcus aureus, Candida albicans and moulds.

Yet ozone but is toxic gas.When ozone concentration in the atmosphere is 0.1ppm (disinfection cupboard sterilization ozone concentration is 76ppm), can cause the stimulation of nose and larynx mucous membrane; When 0.2ppm, cause asthma attack, cause upper respiratory disease to worsen, stimulate eyes simultaneously, eyesight is reduced; When 2ppm is above, can causes headache, pectoralgia, can cause pulmonary edema when serious.For guaranteeing operator's safety, state's regulation permission standard such as international ozone association, Germany, the U.S., Japan is 0.1ppm.Present problem is that ozone disengages excessive harmful, is but ignored by many developers, so most patent documentation is is only maximized favourable factors and minimized unfavourable ones, does not consider the excessive problem of ozone.Though the design that the existing patent No. is 201020161283.5 patents has the anti-ozone of Considering Adsorption to overflow, if it is too much to overflow ozone, then adsorption capacity is limited; Patent of invention 200510044727.0 has been announced sealing between loam cake and the washing tube has been prevented the way that ozone overflows, if open lid, still had the ozone overflow problem.Existing these technology are not only loaded down with trivial details, nor can guarantee that ozone is safe in utilization.If ozone sensor is installed on rinsing maching and is connected with ozone generator, but online regulation control ozone generating capacity then, assurance ozone safe in utilization.

3. remove agricultural residual technology

The existing many using ozones of washing technology remove the residues of pesticides (farming is residual) of fruit and vegetable surfaces; Ozone is to containing the agricultural residual good like removal effects such as DDVP of alkene structures; But pesticide species is various, and structure is different, thus ozone remove farming residual be limited (Sun Meihua, Chen Qian, Song Guangquan etc. safety and environment journal; 2010,10 (4): 27-29).If integrated two washings mutually, ozone and nanometer technology, then can overcome the limitation problem that ozone removes agricultural chemicals, improve the residual removal effect of various farmings.

The utility model content

The utility model has overcome shortcoming of the prior art; Provide a kind of quick-fried air water jet flow multi-functional integrated beet washer, problems such as it has solved, and existing beet washer clean result is not good, fruits and vegetables damages, agricultural residual removal is selective and clearance is low and ozone is safe in utilization.

In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:

The multi-functional integrated beet washer of a kind of quick-fried air water jet flow comprises base, and said base top is provided with outer bucket and interior bucket; Bucket is located in the said outer bucket in said; Be provided with aerator, washing basket pallet and washing basket in the bucket in said, be provided with air compressor in the said base, said air compressor is communicated with ozone generator; Said ozone generator is communicated with through the nanometer aerator in wireway and the said interior bucket; Also be provided with motor in the said base, said motor connects said washing basket pallet through the waterproof axle, and the washing basket pallet drives said washing basket and rotates.

Further, also be provided with water pump in the said base, said water pump one end is communicated with filter vat through aqueduct, bucket in said filter vat connection is said, and the said water pump other end is communicated with said interior bucket through aqueduct, forms circulation.

Further, be provided with the training for sediment groove between said filter vat and the interior bucket.

Further, said waterproof axle connects the washing basket pallet, and said washing basket is installed on washing basket pallet top.

Further, said washing basket pallet adopts buckle-type to be connected with said washing basket bottom.

Further; Said washing basket pallet top is provided with 3 and is protruding the button and 1 tapered cup nut of regular hexagon that isosceles triangle is arranged; Said washing basket pallet is tightened on the said waterproof axle through tapered cup nut, and aperture shape that relevant position, said washing basket bottom is recessed and the convexity of the regular hexagon on the said washing basket pallet and tapered cup nut link closely.

Further, said wireway forms the turning that makes progress between bucket and the interior bucket outside said, and said wireway turning highest point exceeds the vegetable washing water position.

Further, said wireway turning is built-in with anti-folding spring.

Further, said interior bucket connects a water inlet pipe, and said water inlet pipe connects entering water electromagnetic valve, and said entering water electromagnetic valve connects a water level controller.

Further, said interior bucket is communicated with a drainpipe, and said drainpipe is provided with drain solenoid valve.

Compared with prior art, the beneficial effect of the utility model is:

The utility model adopts gas (air and ozone) water (water and nanometer activated water) two washing technology mutually; Detersive efficiency is high; The fruits and vegetables not damaged, sterilization and residual effective except that farming, it is residual that common fruits and vegetables 4-6min can accomplish washing, sterilizes and remove farming; Can effectively remove the various residues of pesticides of fruit and vegetable surfaces; Comprise organic phosphates, organochlorine class, organic nitrogen, Organic fluoride class, carbamates, pyrethroid, botanical pesticide, microbial insecticide, bactericide, herbicide, plant growth regulator etc., and then greatly improved the edible security of fruits and vegetables, this product not only can clean fruits and vegetables; Tealeaves also capable of washing, bowls and chopsticks, rice washing etc. are applicable to family, school, office and agricultural products fresh-keeping outlet or processing use.

Description of drawings

Accompanying drawing is used to provide the further understanding to the utility model, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model, in the accompanying drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the vertical view of the utility model washing basket;

Fig. 3 is the vertical view of the utility model aerator;

Fig. 4 is the upward view of the utility model aerator;

Fig. 5 is that the A-A of Fig. 3 is to view and partial enlarged drawing;

Fig. 6 is the three-dimensional structure diagram of washing basket pallet;

Fig. 7 is the vertical view of washing basket pallet;

Fig. 8 is that the B-B of Fig. 7 is to cutaway view;

Fig. 9 is the package assembly sketch map of washing basket pallet and aerator.

Among the figure,

1---water inlet pipe; 2---entering water electromagnetic valve;

3---anti-folding spring; 4---wireway;

5---the washing basket pallet; 6---the nanometer aerator;

7---water level controller; 8---cored screw;

9---the waterproof axle; 10---motor;

11---ozone generator; 12---air compressor;

13---drainpipe; 14---drain solenoid valve;

15---water pump; 16---filter vat;

17---the training for sediment groove; 18---washing basket;

19---interior bucket; 20---outer bucket;

21---ozone sensor; 22---aqueduct;

23---intelligent electric-controlled plate; 24---case lid;

25---base; 26---protruding button;

27---tapered cup nut.

The specific embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

As shown in Figure 1, the multi-functional integrated beet washer of the described quick-fried air water jet flow of the utility model comprises base 25; Base 25 tops are provided with outer bucket 20 and interior bucket 19, and interior bucket 19 is located in the outer bucket 20, is provided with washing basket 18, washing basket pallet 5 and nanometer aerator 6 in the interior bucket 19; Be provided with air compressor 12 in the base 25, air compressor 12 is communicated with ozone generator 11, and ozone generator 11 is communicated with through wireway 4 and nanometer aerator 6; In the present embodiment, aerator adopts nanometer aerator 6.

Consult Fig. 2 to Fig. 9; Also be provided with motor 10 in the base 25; Motor 10 directly is connected on the waterproof axle 9, bucket 19 bottom centre in waterproof axle 9 is fixed on, and washing basket pallet 5 is fixed on the waterproof axle 9 through tapered cup nut 27; Washing basket 18 is placed on the washing basket pallet 5; Washing basket pallet 5 adopts buckle-type to be connected with washing basket 18 bottoms, has 3 regular hexagon convexities that are the isosceles triangle arrangement to buckle 26 and one tapered cup nut 27 on the washing basket pallet 5, and pallet 5 is tightened on the motor waterproof axle 9 through tapered cup nut 27 and tapered cup nut.Convexity on the aperture shape that relevant position, washing basket 18 bottom is recessed and just big or small and the basket for washing vegetable pallet 5 links closely, owing to be provided with tapered cup nut 27, then can quickly and easily washing basket 18 be fixed on the washing basket pallet 5, lays and take out very convenient.Venthole adopts cellular regular hexagon structure at the bottom of washing basket 18 baskets, Stability Analysis of Structures, and the area of giving vent to anger is big, and it is little to go out atmidometer, and fruits and vegetables are difficult for spilling.The pore size of giving vent to anger according to washing basket 18 can change purposes.When washing basket aperture during, then can be used as the rice washing basket and use at 0.2cm.

Ozone generator 11 is as the source of oxygen of ozone generator 11 in succession for the compressed air that air compressor 12 produces, and the compressed air that has ozone is transported to nanometer aerator 6 quick-fried gas through wireway 4 and cored screw 8, because air pressure (ozone and air) is big; Nanometer aerator 6 apertures are very little, and thin, the quick-fried gas area of gas is big, and are evenly strong; Then promote jet water stream, not only quickened the dissolving and the diffusion of ozone, also help the generation and the diffusion of nanometer activated water; Under the promotion of gas-liquid two-phase; Fruits and vegetables suspend, and in water, roll up and down, make the fruits and vegetables washing evenly; Improved washing, sterilization and removed the residual effect of farming, overcome traditional action of centrifugal force and brought the drawback that washing is irregular or fruit and vegetable damage.For preventing sediment settlement to nanometer aerator 6, nanometer aerator 6 adopts mushroom cake convexed appearance design (patent No.: ZL201130409407.7 or ZL201130409444.8)); For ease of dismounting; Wash solarization, nanometer aerator 6 adopts detachable cored screw 8 to be fixed on interior bucket 19 bottoms, gets into ozone generator 11 and air compressor 12 for preventing aqueous reflux; Wireway 4 is exceeded the vegetable washing water position; For prevent wireway 4 at the turning modification, be built-in with anti-folding spring 3 at wireway 4 turnings, unblocked to guarantee air-flow.

Because nanometer aerator 6, the aperture is very little, and average pore size is about 100um; Air pressure is high, and bubble is careful evenly, and the quick-fried gas area of nanometer is big; Make that the diffusion of ozone and nanometer activated water is fast, not only improved the solubility of ozone and nanometer activated water, and increased the contact area with washings.Gas-liquid two-phase washing technology that ozone and nanometer activated water are integrated has improved washing, sterilization and has removed the effect of residues of pesticides, is particularly suited for removing the residues of pesticides of different molecular structures.Ozone sensor 21 is installed, but then the spill-out of online regulation control ozone is less than or equal to the international standard of 0.1ppm, guarantees user's safety and environmentally friendly on rinsing maching.The anti-ozone oxidation of nanometer aerator, washable solarization can be used repeatedly, does not influence quick-fried gas and removes agricultural residual effect fruit.

Ozone generator 11 is connected with ozone sensor 21; For guaranteeing not exceed standard, adopt clearance-type to supply ozone, promptly in the wash time 2min of unit in work or the ozone spill-out during draining; Each 0.5min ozone generator of front and back is not worked; 1min in the middle of only working, and, guarantee sterilization effect and safe in utilization to overflowing ozone amount enforcement online regulation control.

Water inlet pipe 1 connects entering water electromagnetic valve 2, and entering water electromagnetic valve 2 connects water level controller 7, regulation and control water level height.Water circulating pump 15 links to each other with filter vat 16, and filter vat 16 communicates with the training for sediment groove 17 of interior bucket 19 bottoms, and when using water conservation mode, water pump 15 starts, and washings through bucket 19 in aqueduct 22 injections, recycle behind filter vat 16.Washing finishes, and by 13 drainings of drain solenoid valve 14 control drainpipes, in drainage procedure, motor 10 works on air compressor 12, finishes until draining, and motor 10 just quits work with air compressor 12.Time-delay (about 0.5min) work of motor 10 and air compressor 12 helps fruits and vegetables ' dehydration residual with the ozone that blows away on the fruits and vegetables; The effect that also has automatic cleaning nanometer aerator 6.

The use of the utility model is:

During use, open bung 24, put into washing basket 18 to fruits and vegetables, washing basket 18 is placed on the washing basket pallet 5 fixes again, cover case lid 24, connect water inlet pipe 1, (ON/OFF on intelligent electric-controlled plate 23; Express/4min; Mark is washed/6min; Wash by force/12min; Water saving/washing (6min); Ozone/monitoring), turn on the power switch, choice menus such as mark are washed/6min and ozone/monitoring, and then entering water electromagnetic valve 2 is started working, and 7 water fillings of control water level controller, and water level is no more than aqueduct 22 highest orders.Motor 10 starts with air compressor 12; Compressed air imports nanometer aerator 6 quick-fried gas through wireway 4 and cored screw 8; Promote jet water stream, the upset back and forth up and down of the moving fruits and vegetables of air water diphasic zone is aided with washing basket 18 positive and negative at a slow speed fruits and vegetables of stirring under the drive of motor 10 again; Make the no dead angle of fruits and vegetables washing, not damaged.Behind washing 0.5min, ozone generator 11 starts with ozone sensor 21, and online regulation control ozone spill-out is less than or equal to 1ppm.Washing is washed 3 times at preset timed intervals, and every 2min changes water 1 time, changes water altogether 2 times.In every 2min, 0.5min do not work with back 0.5min before the ozone generator 11, every unit time 1min that only works, and in standard wash 6min, the ozone generator 11 accumulative totals 3min that works; Adopt the gap to supply ozone, promptly guaranteed sterilization concentration and time, be unlikely when work or draining ozone again and overflow and exceed standard.If surpass or the standard of overflowing of the 0.1ppm that not enough ozone sensor 21 is set, then ozone generator can stop or opening automatically.When starting water conservation mode, water pump 15 starts, and after the 1st washings were filtered through filter vat 16, through aqueduct 22, bucket 19 recycled in injecting, and washing process only need be intake 1 time, changes water 1 time, but using water wisely 30% makes things convenient for the water-deficient area to select for use.When startup expresses/during the 4min pattern, only washes 1 time, clean 1 time.When launching the formula of touching of washing by force (12min), need washing 6 times altogether, beginning water circulation 3 times is cleaned 2 times at last.Rice washing and wash water are really with expressing/the 4min pattern; Wash vegetables commonly used with standard/6min pattern; Washing wild bacterium, lichens, pachyrhizus etc. contains the more and agricultural residual more leaf vegetables of silt impurity and should select for use by force and wash/the 12min pattern.Under strong mold cleaning formula, the 11 accumulative total working times of ozone generator are 6min.

The utility model is integrated dexterously two washings mutually, ozone and nanometer technology; Then can overcome existing pure ozone and remove the residual limitation of farming its pesticide species and structure; Wherein ozone can make the compound oxidation that contains two keys in the pesticide molecule be reduced into carboxylic acid and aldehyde, and loses toxicity; Contain nano material (Sun Meihua, Chen Qian, Song Guangquan etc. food science and technology, 2010,35 (7): aerator 6 308-312), then can make the water activation, produce the extremely strong hydroxy radical of oxidability, can make the residual CO of being oxidized to of some farming ₂And H ₂O, and with compressed air and ozone generating cooperative effect; But gas is purge and to quicken nonpolar farming residual or have the surfactant that has agricultural chemicals of polarity to come off from fruit and vegetable surfaces then.

The utility model ozone generator 11 is a source of oxygen with gases at high pressure, and its ozone output can improve more than 20% than atmospheric air source, connects nanometer aerator 6 quick-fried gas in addition; Pore is little, and quick-fried gas area is big, and the contact surface that helps to enlarge ozone and water amasss; Increase the solubility of ozone in water, also help ozone diffusion and with the washings effect, improve sterilizing efficiency; In 2-6min, the sterilization rate of common germ is reached 100%.

The utility model structural design with form ingenious, science, and it is integrated to remove agricultural residual technology to the quick-fried gas of nanometer aerator, gas-liquid two-phase washing, ozone sterilization and nanometer, and ozone is safe in utilization etc. that important breakthrough and innovation arranged on its structure.

What should explain at last is: more than be merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to embodiment; For a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (10)

1. the multi-functional integrated beet washer of quick-fried air water jet flow comprises base, it is characterized in that: said base top is provided with outer bucket and interior bucket; Bucket is located in the said outer bucket in said; Be provided with aerator, washing basket pallet and washing basket in the bucket in said, be provided with air compressor in the said base, said air compressor is communicated with ozone generator; Said ozone generator is communicated with through the aerator in wireway and the said interior bucket; Also be provided with motor in the said base, said motor connects said washing basket pallet through the waterproof axle, and said washing basket pallet drives said washing basket and rotates.

2. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 1; It is characterized in that: also be provided with water pump in the said base; Said water pump one end is communicated with filter vat through aqueduct; Bucket in said filter vat connection is said, the said water pump other end is communicated with said interior bucket through aqueduct, forms circulation.

3. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 2 is characterized in that: be provided with the training for sediment groove between said filter vat and the interior bucket.

4. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 1 is characterized in that: said waterproof axle connects the washing basket pallet, and said washing basket is installed on washing basket pallet top.

5. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 4 is characterized in that: said washing basket pallet adopts buckle-type to be connected with said washing basket bottom.

6. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 5; It is characterized in that: said washing basket pallet top is provided with 3 and is protruding the button and 1 tapered cup nut of regular hexagon that isosceles triangle is arranged; Said washing basket pallet is connected with the waterproof axle; Be tightened on the said waterproof axle through tapered cup nut, aperture shape that relevant position, said washing basket bottom is recessed and the convexity of the regular hexagon on the said washing basket pallet and tapered cup nut link closely.

7. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 1 is characterized in that: said wireway forms the turning that makes progress between bucket and the interior bucket outside said, said wireway turning highest point exceeds the vegetable washing water position.

8. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 7 is characterized in that: said wireway turning is built-in with anti-folding spring.

9. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 1 is characterized in that: bucket connects a water inlet pipe in said, and said water inlet pipe connects entering water electromagnetic valve, and said entering water electromagnetic valve connects a water level controller.

10. the multi-functional integrated beet washer of quick-fried air water jet flow according to claim 1 is characterized in that: bucket is communicated with a drainpipe in said, and said drainpipe is provided with drain solenoid valve.

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