CN213755676U - Fertilizing device for rice and wheat - Google Patents

Abstract

The utility model provides a fertilizing device for rice and wheat, which comprises a fixed bottom plate, wherein a fertilizing box is arranged on the fixed bottom plate, a material distributing box is arranged at the upper end in the fertilizing box, a discharge port is arranged at the bottom of the material distributing box, the lower end of the discharge port is communicated with a solid discharging box, and a discharging groove is arranged on one side of the solid discharging box; an electric telescopic rod is arranged in the material separating box and provided with a rubber block; the bottom of the material separating box is provided with a through hole communicated with the stirring box, the feeding end of the through hole is provided with a filter screen, an irrigation pump is arranged in the stirring box, and the irrigation pump is communicated with a spray head arranged on the mounting plate; there is the fixing base bottom PMKD, and the middle part of mounting panel articulates on the fixing base, and the mounting panel is connected with the driving piece, and driving piece threaded connection has the vertical lead screw that is just reversing by the drive of first power unit. The utility model discloses both can be used to fertilize solid-state chemical fertilizer and can fertilize liquid chemical fertilizer, but the luffing motion shower nozzle simultaneously effectively increases the area of planting irrigation for irrigate more fully.

Description

Fertilizing device for rice and wheat

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to fertilizer injection unit of rice, wheat.

Background

Agriculture is an industry for obtaining products by artificial cultivation by utilizing growth and development rules of animals and plants. Agriculture belongs to the first industry, and the science for researching agriculture is agriculture. The agricultural working object is living animals and plants, and the obtained products are the animals and plants.

China is a big agricultural country, twenty percent of population lives by virtue of eight percent of cultivated land, wheat, barley, soybean and the like are widely planted in the north of China, and rice is mainly planted in the south of China.

In rice and wheat planting, the rice and wheat are frequently required to be sprayed with pesticides, topdressing and the like, the rice and wheat are generally fertilized by manpower at present in China, the labor fertilization is low in working efficiency, time is greatly wasted, and although some mechanical fertilization devices are arranged on the market at present, the existing fertilization devices cannot be used for fertilizing solid fertilizers and liquid fertilizers, and spray heads of the existing fertilization devices cannot be adjusted, so that the fertilization effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem in the correlation technique at least to a certain extent, for this reason, the utility model provides a fertilizer injection unit of rice, wheat, the device both can be used to fertilize solid-state chemical fertilizer and can fertilize liquid chemical fertilizer, simultaneously can the luffing motion shower nozzle, effectively increase the area of planting irrigation for irrigate more fully.

The technical scheme of the utility model is realized like this:

a fertilizing device for rice and wheat comprises a fixed bottom plate, wherein a fertilizing box is arranged on the fixed bottom plate, a distributing box is arranged at the upper end in the fertilizing box, a feeding hopper is arranged at the upper end of the fertilizing box, and the lower end of the feeding hopper extends into the distributing box; the bottom of the material distribution box is provided with an inverted cone-shaped discharge hole, the lower end of the discharge hole is communicated with a solid discharge box through a first pipeline, and one side of the solid discharge box, which is far away from the material distribution box, is provided with a discharge groove; an electric telescopic rod is arranged at the upper end in the material separating box, and a rubber block used for sealing the discharge hole is arranged at the telescopic end of the electric telescopic rod; the bottom of the material separating box is provided with two through holes, the two through holes are symmetrically arranged on two sides of the discharge hole, a filter screen is arranged at the feeding end of each through hole, the discharge end of each through hole is communicated with a stirring box through a second pipeline, irrigation pumps are arranged on two sides of the bottom in each stirring box, spray heads are respectively arranged on two sides of each stirring box, the feeding end of each spray head is connected with the irrigation pump through a hose, and the spray heads are connected to a mounting plate; the bottom both sides of PMKD are provided with the fixing base respectively, the middle part of mounting panel articulate in on the fixing base, the mounting panel deviates from the one end of shower nozzle is connected with the driving piece, driving piece threaded connection has vertical lead screw, vertical lead screw is through the positive and negative rotation of first power unit drive.

Furthermore, the first power mechanism comprises a first motor arranged at the upper end of the fixed bottom plate, an output shaft of the first motor is provided with a driving gear, the driving gear is coaxially connected with a third rotating disc, the third rotating disc is provided with a first semicircular ring gear, one end, deviating from the vertical screw, of the driving gear is provided with a first driven gear, the first driven gear is coaxially connected with a fourth rotating disc, the outer peripheral surface of the fourth rotating disc is provided with a second semicircular ring gear, the first semicircular ring gear and the second semicircular ring gear are arranged on the same straight line and enclose a whole ring of gear rings, the first semicircular ring gear is meshed with a rack, one end, far away from the third rotating disc, of the rack is meshed with a fifth gear, and the fifth gear is arranged at the upper end of the vertical screw.

Furthermore, a stirring shaft is arranged in the stirring box, a plurality of stirring paddles are arranged on the stirring shaft at equal intervals from top to bottom, the lower end of the stirring shaft extends to the stirring box and is connected with a second driven gear, and the second driven gear is meshed with one side, away from the first driven gear, of the driving gear.

Further, the equipartition has four baffles on the inside wall of agitator tank, the baffle corresponds the stirring rake sets up, the baffle pass through the spliced pole with the inside wall of agitator tank is connected.

Furthermore, four corner positions of the lower end of the fixed bottom plate are respectively provided with supporting legs, and the bottom of each supporting leg is provided with an electric drive roller.

Further, the mounting panel includes integrated into one piece's first board and second board, first board with the second board forms the shape of falling V, the first board with the junction of second board articulates in on the fixing base, the shower nozzle sets up on the first board, the second board with the driving piece is connected.

Further, the driving piece is including threaded connection threaded sleeve and two symmetries on the vertical lead screw set up the linking arm in the threaded sleeve outside, the linking arm with the second plate is articulated.

Further, a cavity is arranged in the solid discharging box, the first pipeline is communicated with the cavity, and the cavity is communicated with the discharging grooves through a plurality of discharging through grooves; the plurality of discharging through grooves are arranged at equal intervals.

Furthermore, the lateral wall upper end of agitator tank is provided with the inlet tube, the other end intercommunication of inlet tube has the water tank.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a be provided with electric telescopic handle in the branch workbin upper end, when needs apply solid-state chemical fertilizer, at first start electric telescopic handle shrink lift up the rubber sprue block and break away from the discharge gate, drop into the branch workbin with solid-state chemical fertilizer afterwards, because the pan feeding end of through-hole is provided with the filter screen, the filter screen plays the effect of separation, therefore solid-state chemical fertilizer can't enter into the through-hole, and solid-state chemical fertilizer gets into in the discharge gate through the clearance between rubber sprue block and the discharge gate, and enter into solid row workbin through first pipeline, discharge from the blow-off groove at last, realize the fertilization to solid-state chemical fertilizer; when liquid chemical fertilizer needs to be applied, firstly, the electric telescopic rod is started to stretch out to enable the rubber block to descend to block the discharge port, then the liquid chemical fertilizer is put into the distribution box, the rubber block blocks the discharge port, so that the liquid chemical fertilizer cannot enter the discharge port, the liquid chemical fertilizer enters the stirring box through the through hole and the second pipeline to be stirred, and the liquid chemical fertilizer is sprayed out from the spray nozzle under the driving of the irrigation pump, so that the liquid chemical fertilizer is applied; simultaneously, the middle part of the mounting plate is hinged to the fixing seat, and in the fertilizing process, the first power mechanism is started to drive the vertical screw to rotate forwards and reversely, so that the driving piece can ascend and descend vertically, the spray head can swing vertically, the planting irrigation area is effectively increased, and irrigation is more sufficient.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic structural view of the electric telescopic rod in FIG. 1 in a contracted state;

fig. 4 is a schematic view of an assembly structure of a third rotating disc, a fourth rotating disc and a rack in the embodiment of the present invention;

fig. 5 is a schematic sectional structure diagram of a solid discharge box in an embodiment of the present invention.

Reference numerals:

100 fixed bottom plates, 110 fixed seats, 120 supporting legs and 130 electrically driven rollers;

200 material distribution boxes, 210 material outlet ports, 220 first pipelines, 230 through holes, 240 filter screens and 250 second pipelines;

300 solid discharge box, 310 discharge groove, 320 electric telescopic rod, 330 rubber block, 340 cavity and 350 discharge through groove;

400 stirring box, 410 irrigation pump, 411 hose, 420 spray head, 430 mounting plate, 431 first plate, 432 second plate, 440 stirring shaft, 450 stirring paddle, 460 second driven gear, 470 baffle, 480 connecting column, 490 water inlet pipe;

510 driving piece, 511 thread bush, 512 connecting arm, 520 vertical screw rod, 530 first motor, 540 driving gear, 550 third rotating disc, 551 first semicircular ring gear, 560 first driven gear, 570 fourth rotating disc, 571 second semicircular ring gear, 580 rack and 590 fifth gear;

600 fertilizing boxes and 610 feed inlets.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as "upper", "lower", "front", "rear", "left", "right", etc., are referred to the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there is any description of "first", "second", etc., it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, a fertilizing apparatus for rice and wheat according to an embodiment of the present invention includes a fixed base plate 100, a fertilizing box 600 is disposed on the fixed base plate 100, a distributing box 200 is disposed at an upper end of the fertilizing box 600, a feeding hopper 610 is disposed at an upper end of the fertilizing box 600, and a lower end of the feeding hopper 610 extends into the distributing box 200; the bottom of the material separating box 200 is provided with an inverted cone-shaped discharge hole 210, the lower end of the discharge hole 210 is communicated with a solid discharge box 300 through a first pipeline 220, and one side of the solid discharge box 300 away from the material separating box 200 is provided with a discharge groove 310; an electric telescopic rod 320 is arranged at the upper end in the material distribution box 200, and a rubber block 330 for sealing the discharge hole 210 is arranged at the telescopic end of the electric telescopic rod 320; the bottom of the material distribution box 200 is provided with two through holes 230, the two through holes 230 are symmetrically arranged on two sides of the discharge hole 210, the feeding end of the through hole 230 is provided with a filter screen 240, the discharge end of the through hole 230 is communicated with a stirring box 400 through a second pipeline 250, two sides of the bottom in the stirring box 400 are provided with irrigation pumps 410, two sides of the stirring box 400 are respectively provided with spray heads 420, the feeding end of the spray heads 420 is connected with the irrigation pumps 410 through a hose 411, and the spray heads 420 are connected to a mounting plate 430; the fixing bases 110 are respectively arranged on two sides of the bottom of the fixing base plate 100, the middle of the mounting plate 430 is hinged to the fixing bases 110, one end, away from the spray head 420, of the mounting plate 430 is connected with a driving piece 510, the driving piece 510 is in threaded connection with a vertical lead screw 520, and the vertical lead screw 520 is driven to rotate forwards and backwards through a first power mechanism. Compared with the prior art, the embodiment of the utility model provides a top through in the branch workbin 200 is provided with electric telescopic handle 320, when solid-state fertilizer is applyed to needs, at first start electric telescopic handle 320 shrink lift up rubber sprue 330 and break away from discharge gate 210, put into the branch workbin 200 with solid-state fertilizer afterwards, because the pan feeding end of through-hole 230 is provided with filter screen 240, filter screen 240 plays the effect of separation, therefore solid-state fertilizer can't enter into in the through-hole 230, and solid-state fertilizer passes through the clearance between rubber sprue 330 and the discharge gate 210 and enters into in the discharge gate 210, and enter into solid-state discharge box 300 through first pipeline 220, discharge from blow-off tank 310 at last, realize the fertilization to solid-state fertilizer; when liquid fertilizer needs to be applied, firstly, the electric telescopic rod 320 is started to extend out to enable the rubber blocking block 330 to descend to block the discharge port 210, then the liquid fertilizer is put into the material distribution box 200, the rubber blocking block 330 blocks the discharge port 210, so that the liquid fertilizer cannot enter the discharge port 210, the liquid fertilizer enters the stirring box 400 through the through hole 230 and the second pipeline 250 to be stirred, and the liquid fertilizer is sprayed out from the spray head 420 under the driving of the irrigation pump 410, so that the liquid fertilizer is applied; meanwhile, the middle part of the mounting plate 430 is hinged to the fixing seat 110, and in the fertilizing process, the first power mechanism is started to drive the vertical screw 520 to rotate forwards and reversely, so that the driving piece 510 ascends and descends, the spray head 420 swings upwards and downwards, the planting and irrigating area is effectively increased, and the irrigation is more sufficient.

As shown in fig. 1 to 4, in some embodiments of the present invention, the first power mechanism includes a first motor 530 disposed at an upper end of the fixed base plate 100, a driving gear 540 is disposed on an output shaft of the first motor 530, the driving gear 540 is coaxially connected to a third rotating disc 550, a first semicircular ring gear 551 is disposed on the third rotating disc 550, a first driven gear 560 is disposed at an end of the driving gear 540 away from the vertical screw 520, a fourth rotating disc 570 is coaxially connected to the first driven gear 560, a second semicircular ring gear 571 is disposed on an outer circumferential surface of the fourth rotating disc 570, the first semicircular ring gear 551 and the second semicircular ring gear 571 are disposed on a same straight line and enclose a whole ring gear, a rack 580 is engaged with the first semicircular ring gear 551, a fifth gear 590 is engaged at an end of the rack 580 away from the third rotating disc 550, and a fifth gear 590 is disposed at an upper end of the vertical screw 520. In the fertilizing process, the first motor 530 is started to drive the driving gear 540 to rotate, the driving gear 540 drives the first driven gear 560 to rotate, so that the third rotating disc 550 and the fourth rotating disc 570 synchronously rotate in the reverse direction, and as the first semicircular ring teeth 551 and the second semicircular ring teeth 571 enclose a complete gear ring and both the first semicircular ring teeth 551 and the second semicircular ring teeth 571 can be meshed with the rack 580, when the first semicircular ring teeth 551 and the rack 580 are meshed, the rack 580 drives the fifth gear 590 to rotate in the positive direction; when the second semicircular ring teeth 571 are engaged with the rack 580, the rack 580 drives the fifth gear 590 to rotate reversely; that is, when the first motor 530 drives the driving gear 540 to rotate for one circle, the first semicircular teeth 551 and the second semicircular teeth 571 are alternately engaged with the rack 580 and drive the rack 580 to reciprocate for one time, so as to realize the up-and-down swing of the injector 420; in the whole process, the first motor 530 does not need to rotate in a direction-changing manner, so that the first motor 530 can be prevented from repeatedly rotating forwards and backwards to shorten the service life of the first motor. It will be appreciated that the drive gear 540 and the first driven gear 560 are identical gears, and that the third turn disc 550 and the fourth turn disc 570 are of identical size.

As shown in fig. 1 to 3, it is preferable that a stirring shaft 440 is disposed in the stirring tank 400, a plurality of stirring paddles 450 are disposed on the stirring shaft 440 at equal intervals from top to bottom, a lower end of the stirring shaft 440 extends to the stirring tank 400 and is connected to a second driven gear 460, and the second driven gear 460 is engaged with a side of the driving gear 540 away from the first driven gear 560. By the arrangement, the first motor 530 drives the stirring shaft 440 and the stirring paddle 450 to rotate to stir the liquid fertilizer and the water, and simultaneously drives the spray head 420 to swing up and down; the stirring action and the up-down lifting swinging action only need one first motor 530 as a power source, so that the cost can be reduced, and the structure can be further simplified.

As shown in fig. 1 and fig. 2, it is further preferable that four baffles 470 are uniformly distributed on the inner side wall of the stirring tank 400, the baffles 470 are arranged corresponding to the stirring paddle 450, and the baffles 470 can prevent the liquid fertilizer and water from generating a vortex flow to form a stratification phenomenon during the stirring and mixing process; to be more specific, the baffle 470 is connected to the inner sidewall of the stirring tank 400 through the connecting column 480, so that a gap is formed between the baffle 470 and the inner wall of the stirring tank 400, and the swirling flow generated during the stirring and mixing of the liquid fertilizer and the water can be more effectively avoided. It is understood that the embodiments of the present invention are merely preferred to select the number of the baffle plates 470, and the specific number of the baffle plates 470 is not limited, and the number of the baffle plates 470 may be two, three or five, etc. according to actual requirements.

As shown in fig. 1 and 3, in some embodiments of the present invention, the supporting legs 120 are respectively disposed at four corner positions of the lower end of the fixing base plate 100, and the electrically driven roller 130 is disposed at the bottom of each supporting leg 120, so that it is more convenient to move the fertilizing box 600 to fertilize crops in a field.

As shown in fig. 1 and 3, in some embodiments of the present invention, the mounting plate 430 includes a first plate 431 and a second plate 432 formed integrally, the first plate 431 and the second plate 432 form an inverted V shape, a connection portion of the first plate 431 and the second plate 432 is hinged to the fixing base 110, the spray head 420 is disposed on the first plate 431, and the second plate 432 is connected to the driving member 510. Since the connection point of the first plate 431 and the second plate 432 is hinged to the fixing base 110, the mounting plate 430 acts like a "lever", so that the first plate 431 and the spraying head 420 swing upwards when the driving member 510 drives the second plate 432 to ascend together; when the driving member 510 lowers the second plate 432, the first plate 431 and the nozzle 420 swing downward, thereby increasing the distance between the nozzle 420 and the fertilizer.

Preferably, the driving member 510 includes a threaded sleeve 511 threaded on the vertical screw 520, and two connecting arms 512 symmetrically disposed on the outer side of the threaded sleeve 511, wherein the connecting arms 512 are hinged with the second plate 432. Because the two connecting arms 512 are symmetrically arranged on the two sides of the threaded sleeve 511, the two connecting arms 512 can drive the two spray heads 420 to swing up and down basically and synchronously in the rotating process of the vertical screw 520, so that the fertilization and irrigation are more uniform.

As shown in fig. 1 and 5, in some embodiments of the present invention, a cavity 340 is disposed in the solid discharge box 300, the first pipe 220 is communicated with the cavity 340, and the cavity 340 is communicated with the discharge chute 310 through a plurality of discharge through slots 350; the plurality of discharge through grooves 350 are arranged at equal intervals. Set up like this for solid-state fertilizer enters into the cavity 340 back in the solid row of case 300 through first pipeline 220, arranges through the row of equidistant range that the groove 350 is led to by even discharge, drops, thereby what make when applying solid-state fertilizer, more even, solid-state fertilizer piles up unrestrained together when avoiding fertilizing, causes certain influence to the effect of fertilization.

As shown in fig. 1 and 3, in some embodiments of the present invention, a water inlet pipe 490 is disposed at an upper end of a side wall of the stirring tank 400, and the other end of the water inlet pipe 490 is communicated with a water tank. Supply water through inlet tube 490 and carry out abundant stirring with liquid chemical fertilizer in agitator tank 400 for fertilize after liquid chemical fertilizer and the more even mixture of water, ensure the effect of fertilizeing.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A fertilizing device for rice and wheat is characterized by comprising a fixed base plate, wherein a fertilizing box is arranged on the fixed base plate, a distributing box is arranged at the upper end in the fertilizing box, a feeding hopper is arranged at the upper end of the fertilizing box, and the lower end of the feeding hopper extends into the distributing box; the bottom of the material distribution box is provided with an inverted cone-shaped discharge hole, the lower end of the discharge hole is communicated with a solid discharge box through a first pipeline, and one side of the solid discharge box, which is far away from the material distribution box, is provided with a discharge groove; an electric telescopic rod is arranged at the upper end in the material separating box, and a rubber block used for sealing the discharge hole is arranged at the telescopic end of the electric telescopic rod; the bottom of the material separating box is provided with two through holes, the two through holes are symmetrically arranged on two sides of the discharge hole, a filter screen is arranged at the feeding end of each through hole, the discharge end of each through hole is communicated with a stirring box through a second pipeline, irrigation pumps are arranged on two sides of the bottom in each stirring box, spray heads are respectively arranged on two sides of each stirring box, the feeding end of each spray head is connected with the irrigation pump through a hose, and the spray heads are connected to a mounting plate; the bottom both sides of PMKD are provided with the fixing base respectively, the middle part of mounting panel articulate in on the fixing base, the mounting panel deviates from the one end of shower nozzle is connected with the driving piece, driving piece threaded connection has vertical lead screw, vertical lead screw is through the positive and negative rotation of first power unit drive.

2. The fertilizing apparatus for rice and wheat as claimed in claim 1, the first power mechanism comprises a first motor arranged at the upper end of the fixed bottom plate, an output shaft of the first motor is provided with a driving gear, the driving gear is coaxially connected with a third rotating disc, the third rotating disc is provided with a first semicircular ring gear, one end of the driving gear, which is far away from the vertical screw rod, is provided with a first driven gear, a fourth rotating disc is coaxially connected on the first driven gear, the peripheral surface of the fourth rotating disc is provided with second semicircular ring teeth, the first semicircular ring teeth and the second semicircular ring teeth are arranged on the same straight line and form a whole circle of gear ring in a surrounding way, the first semicircular ring gear is meshed with a rack, a fifth gear is meshed with one end, far away from the third rotating disc, of the rack, and the fifth gear is arranged at the upper end of the vertical screw rod.

3. The fertilizing device for rice and wheat as claimed in claim 2, wherein a stirring shaft is arranged in the stirring tank, a plurality of stirring paddles are arranged on the stirring shaft at equal intervals from top to bottom, the lower end of the stirring shaft extends to the stirring tank and is connected with a second driven gear, and the second driven gear is meshed with one side of the driving gear, which is far away from the first driven gear.

4. The fertilizing device for rice and wheat as claimed in claim 3, wherein four baffles are uniformly distributed on the inner side wall of the stirring tank, the baffles are arranged corresponding to the stirring paddles, and the baffles are connected with the inner side wall of the stirring tank through connecting columns.

5. The fertilizing device for rice and wheat as claimed in claim 1, wherein the four corner positions of the lower end of the fixed bottom plate are respectively provided with supporting legs, and the bottom of each supporting leg is provided with an electrically driven roller.

6. The fertilizing apparatus for rice and wheat as claimed in claim 1, wherein the mounting plate comprises a first plate and a second plate which are integrally formed, the first plate and the second plate form an inverted V shape, the joint of the first plate and the second plate is hinged on the fixing base, the spraying nozzle is arranged on the first plate, and the second plate is connected with the driving member.

7. The fertilizing device for rice and wheat as claimed in claim 6, wherein the driving member comprises a threaded sleeve screwed on the vertical screw rod and two connecting arms symmetrically arranged on the outer side of the threaded sleeve, and the connecting arms are hinged with the second plate.

8. The fertilizing apparatus for rice and wheat as claimed in claim 1, wherein a cavity is provided in the solid discharging box, the first pipeline is in communication with the cavity, and the cavity is in communication with the discharging grooves through a plurality of discharging through grooves; the plurality of discharging through grooves are arranged at equal intervals.

9. The fertilizing device for rice and wheat as claimed in claim 1, wherein a water inlet pipe is arranged at the upper end of the side wall of the stirring tank, and the other end of the water inlet pipe is communicated with a water tank.

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