CN101586801A

CN101586801A - Boiler with automatic watering device

Info

Publication number: CN101586801A
Application number: CN 200910099749
Authority: CN
Inventors: 陈光焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-14
Filing date: 2009-06-14
Publication date: 2009-11-25
Anticipated expiration: 2029-06-14
Also published as: CN101586801B

Abstract

A boiler with automatic watering device comprises a boiler body and an electric cabinet. A watering pot is mounted on the boiler body. A heat storage case in which a converting pot is internally mounted is submerged in a spare water tank. A sealed insulating layer is mounted out of the converting pot. The capacity of the heat storage case is more than three times of the converting pot. The watering pot is connected with the boiler body via a forcing valve two. The watering pot is connected with the bottom of the converting pot via the converting valve and is equipped with a pressure meter one, a watering pot exhaust-valve, a watering one-way valve. The bottom of the watering pot is connected with the boiler body via a watering pipe with the watering one-way valve. The watering pipe is provided with a running water interfaced valve. The converting pot is connected with the boiler body via a forcing valve six. The converting pot is connected with an exhaust pipe via a dropping valve. The exhaust pipe is extended to the converting pot bottom via the sealed insulating layer and is provided with a pressure meter two. An inclined open is opened at the lower end of the exhaust pipe. A cooled water inlet is opened on the heat storage case. An excess heat return pipe is extended to the bottom of the heat storage case. The boiler body is connected with a boiler exhaust-valve. The on-off of the forcing valve two, the forcing valve six and the dropping valve are controlled by the electric cabinet.

Description

The boiler of band automatic watering apparatus

Technical field

The present invention relates to a kind of boiler, refer in particular to a kind of boiler with automatic watering apparatus.

Background technology

Since Englishman watt has been invented steam engine two for over 100 years more than a hundred years, all boiler fills all are to rely on to accomplish that motor, water pump greater than boiler pressure finish.Along with the fast development of modern industry, not only use steam more wide as the industrial trade of the usefulness of power or heat exchange, the capacity of its boiler is also increasing.Though new and high technology, new material have solved difficult problems such as powerful motor manufacturing technology and HTHP water pump material, fail to change the method for boiler feedwater, cause the electric pump way of supplying water of boiler to be leveraged to the present always.High-pressure boiler is as one 100 tons boiler, and the separate unit power of motor of its feed pump just needs 3200 kilowatt hours, and year power consumption is up to more than 20,000,000 degree.As raise power plant for self-supply of subsidiary, four groups of 220 tons of boilers are arranged in running, its surprising feed pump power consumption well imagines, Quan Guo large-scale steam power plant, steel mill and even similar enterprises all over the world still more, and countless especially at 2 tons, 4 tons, 10 tons miniature boiler of usefulness.

Motor and water pump adds water, and bigger drawback is that it can't in time add back boiler with overbottom pressure steam, and when the water temperature that is added reached more than 60 ℃, it was just very difficult to add water, causes the boiler waste of steam rate in use of current every profession and trade generally to reach 10%-15% simultaneously.Though the producer that has takes back the pond with the water return pipeline of boiler, heat is dispersed in whole pond to the greatest extent and is equipped with among the water, round-the-clockly has little significance in heat radiation, only needs the hundreds of jin because add a water.Nearest " twin-tub " formula waste heat recovery new departure of being promoted on the market, it utilized is still high-pressure hydraulic pump and is equipped with heavy-duty motor the hot water of high temperature is clamp-oned the method for boiler firmly, equally not only power consumption but also consume equipment, only water pump quality difference.

Chinese patent once disclosed a kind of steam boiler with external automatic watering apparatus, and (publication number is CN2257351Y, open day 1997.07.02), its automatic watering apparatus is made up of float tank and valve box, float tank top has the vapor communication pipe to be communicated with pot body top, the bottom has feed pipe to be communicated with pot body bottom, float and float lever are fixed on the action lever of aperture ball-cock assembly, the aperture ball-cock assembly is installed on the interior valve bonnet of valve box, its upper end is set with the rubber removable cover that covers valve bonnet, the screen pack dust excluding hood covers whole aperture ball-cock assembly and valve bonnet, valve box one side has water inlet pipe, and blow-off pipe is arranged at the bottom.Higher when the boiler internal pressure, when water temperature is higher, it is difficult to water is added boiler.

Chinese patent once disclosed the external automatic watering apparatus of a kind of boiler, and (publication number is CN2299990Y, open day 1998.12.09), it includes float tank and aperture ball-cock assembly, there are vapor communication pipe, water communicating pipe to link to each other with water storage space with the vapor space of pot body respectively on the float tank, float and float lever are fixed on the action lever of aperture ball-cock assembly, the valve gap profile of aperture ball-cock assembly is a ring flange, be fixed on screw on the flange seat of float tank, the water inlet of aperture ball-cock assembly connects running water pipe, and delivery port connects bottom of pot body by feed pipe.Higher when the boiler internal pressure, when water temperature is higher, it also is difficult to water is added boiler.

Chinese patent once disclosed a kind of steam boiler and intake automatically that (publication number is CN2416353Y to device, open day 2001.01.24), comprise water storage cavity and the boiler replenishing water pipe that is positioned under the water storage cavity, it is characterized in that water storage cavity top is provided with intake antrum, water storage cavity is communicated with by the water inlet isolating valve with intake antrum, intake antrum chamber wall is provided with into water check valve, and the intake antrum top is provided with steam valve.It and running water pipe are connected, and need not electric pump, realize adding water automatically, but still the overbottom pressure waste heat in time can't be added back boiler.

The applicant once designed a kind of boiler (Chinese patent of built-in semi-automatic priming apparatus, publication number is CN2591519Y, open day 2003.12.10), comprise shell, burner hearth, it is characterized in that setting gradually storage tank from top to bottom on the top of shell, the preheating water tank, add water tank No. two, add water tank No. one, storage tank communicates with the preheating water tank, by a filler pipe, No. two filler pipes, No. three filler pipes, No. four filler pipes, water inlet pipe, a steam inlet pipe, No. two steam inlet pipes, steam source pipe connects, and often opens control valve by No. one, No. two normally closed control valves, often open control valve No. three, No. four normally closed control valves, often open control valve No. five, No. six normally closed control valves, often open control valve No. seven, No. eight normally closed control valve control.No matter how high its boiler stove internal gas pressure is, all at an easy rate water is added, not only energy-conservation but also easy to operate.Its semi-automatic priming apparatus is built-in.

The applicant once designed a kind of condensed water and melted down steam self pressure water filling device (Chinese patent, publication number is CN2684019Y, open day 2005.03.09) casing is divided into two places, one place is a storage tank, place and add water pot at another place, storage tank steam-out (SO) iron steam water filter condensing water conduit and condensed water check-valves and running water pipe and running water control ball valve, storage tank and add and be connected with blower line between the water pot upper part and often drive solenoid electric valve No. three, be connected with water inlet pipe and water inlet check-valves between the following position, add the water pot upper part and be connected with steam inlet pipe and normally closed solenoid electric valve that is connected with the boiler gland steam exhauster, following position is connected with filler pipe and No. two normally closed solenoid electric valves that are connected with the boiler fills mouth, a normally closed solenoid electric valve, No. two normally closed solenoid electric valves, often drive solenoid electric valve for No. three and connect power line.It need not high-pressure pump, and no matter the many height of boiler internal pressure also can easily add water in the stove.But find that in actual use the phenomenon of waste is arranged as the vapour source of the usefulness of power.

The applicant once designed a kind of full automatic self pressure water filling device for boiler, (Chinese patent, publication number is CN1858490, open day 2006.11.08), one casing is divided into two parts with fixed head, the bottom is divided into storage tank, place the steam cylinder in the middle of the top, steam cylinder both sides are placed with oil storage cylinder and work water pipe, the interface channel of oil storage cylinder and work water pipe is located at the bottom, the oil storage cylinder on the left side is communicated with its top with oil guide pipe with steam cylinder bottom, the oil storage cylinder top on the right is communicated with steam cylinder top, and pipe leads to the work water pipe in the steam, connects two in the steam between pipe and the high-pressure steam pipe and opens two pass conversion electromagnetic valves, storage tank top connects running water pipe, place in the middle of the storage tank and add the aqueous vapor cylinder, in the steam cylinder valve piston with add the aqueous vapor cylinder in big piston be connected, add that aqueous vapor cylinder one side is equipped with into the water check-valves up and down and opposite side is equipped with up and down and adds Water Check Valve, add Water Check Valve and connect filler pipe, two open two closes the conversion electromagnetic valve back and connects the working steam recovery tube and lead to storage tank.How high the water water temperature no matter it is added is, how high furnace pressure is, equally water added boiler.

Summary of the invention

The objective of the invention is to overcome the above-mentioned defective that prior art exists, a kind of boiler with automatic watering apparatus is provided, its energy savings realizes adding automatically water.

For achieving the above object, the solution that the present invention takes is:

A kind of boiler with automatic watering apparatus, it comprises boiler body and electric cabinet, add the position on the waterline that water pot is placed in boiler body, heat storage box is submerged in and is equipped with among the water tank, the conversion jar is placed in the heat storage box, the external of conversion jar has sealed guarantor's thermosphere, the capacity of heat storage box is greater than three times of the capacity of changing jar, adding water pot is connected with the venthole of boiler body by pressure charging valve two, adding water pot is connected and setting pressure table one on tube connector by the bottom of switching valve with the conversion jar, the tube connector lower port is installed and is added the water pot exhaust-valve, tube connector is provided with the check valve of surging at the port of conversion pot bottom, the bottom that adds water pot adds water one-way valve by band filler pipe is connected with the filler of boiler body, the following end entrance of filler pipe is installed the tap water interface valve, the top air intake of conversion jar is connected with the venthole of boiler body by pressure charging valve six, the venthole of conversion jar connects gland steam exhauster by dropping valve, gland steam exhauster passes the outside, the end that sealed guarantor's thermosphere extends to the conversion jar, setting pressure table two on the gland steam exhauster, angle is opened in the gland steam exhauster lower end, have cooling water inlet on the heat storage box, connect the bottom of stretching into heat storage box from the waste heat return pipe of boiler body, boiler body connects the boiler exhaust-valve, pressure charging valve two, switching valve, pressure charging valve six, the break-make of four valves of dropping valve is controlled by electric cabinet.

The boiler of this band automatic watering apparatus increases by two withstand voltage tank bodies and promptly adds water pot and conversion jar (their bearing strength is set according to boiler body on original boiler body basis, their capacity is according to the each amount of water manufacturing of boiler body), as long as will add the position on the waterline that water pot is placed in boiler body, the conversion jar is placed among the original pond of user (promptly being equipped with water tank), the heat storage box capacity is greater than conversion three times of tankage size, is submerged in equally in the water in pond to get final product.Angle is opened in the gland steam exhauster lower end, can make steam spray to the bottom periphery of conversion jar.It utilizes the heavy physical principle of vapour light-water to implement to add water, ground standby water be need not electric pump send to adding on the waterline in the water pot on the boiler body waterline automatically, waste heat after Boiler Steam is used in time adds back boiler, avoids waste heat to be dispersed in the waste of all-weather heat radiation in the water of former pond to the greatest extent.Its energy savings realizes adding automatically water.

Description of drawings

Fig. 1 is the boiler structure schematic diagram of band automatic watering apparatus.

Fig. 2 is the boiler electrical schematic diagram of band automatic watering apparatus.

Among the figure: 1; boiler body, 2; pressure charging valve two, 3; add water pot; 4; switching valve, 5-1; Pressure gauge one, 5-2; Pressure gauge two; 6; pressure charging valve six, 7; filler pipe, 8; dropping valve; 9; cooling water inlet, 10; add water one-way valve, 11; the conversion jar; 12; sealed guarantor's thermosphere, 13; heat storage box, 14; be equipped with water tank; 15; the check valve of surging, 16; the waste heat return pipe, 17; add the water pot exhaust-valve; 18; the tap water interface valve, 19; the boiler exhaust-valve, 20; hagioscope; 23; very first time relay, 24; second time relay, 25; the 3rd time relay; 26; first miniature relay, 27; the 4th time relay, 28; the 5th time relay; 29; second miniature relay, 30; earth leakage circuit-breaker, 31; two open two closes self-locking operation button; 32; one opens one closes self-locking operation button; 33; power supply indicator, 34; run indicator, 35; time dalay indicator light; 36; add the water indicator lamp; 37; the conversion indicator lamp, 38; the indicator lamp of surging, 39; the step-down indicator lamp.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing thereof the present invention is remake description.

Referring to Fig. 1, a kind of boiler with automatic watering apparatus, it comprises boiler body 1 and electric cabinet, add the position on the waterline that water pot 3 is placed in boiler body 1, heat storage box 13 is submerged in and is equipped with among the water tank 14, conversion jar 11 is placed in the heat storage box 13, conversion jars 11 external has sealed guarantor's thermosphere 12, the capacity of heat storage box 13 is greater than three times of the capacity of changing jar 11, adding water pot 3 is connected with the venthole of boiler body 1 by pressure charging valve 22, adding water pot 3 is connected and setting pressure table one 5-1 on tube connector by the bottom of switching valve 4 with conversion jar 11, the tube connector lower port is installed and is added water pot exhaust-valve 17, tube connector is provided with the check valve 15 of surging at the port of conversion jar 11 bottoms, the bottom that adds water pot 3 adds water one-way valve 10 by band filler pipe 7 is connected with the filler of boiler body 1, the following end entrance of filler pipe 7 is installed tap water interface valve 18, the top air intake of conversion jar 11 is connected with the venthole of boiler body 1 by pressure charging valve 66, the venthole of conversion jar 11 connects gland steam exhausters by dropping valve 8, gland steam exhauster passes the outside, the end that sealed guarantor's thermosphere 12 extends to conversion jar 11, setting pressure table two 5-2 on the gland steam exhauster, angle is opened in the gland steam exhauster lower end, have cooling water inlet 9 on the heat storage box 13, connect the bottom of stretching into heat storage box 13 from the waste heat return pipe 16 of boiler body 1, boiler body 1 connects boiler exhaust-valve 19, pressure charging valve 22, switching valve 4, pressure charging valve 66, the break-make of 8 four valves of dropping valve is controlled by electric cabinet.

Referring to Fig. 2, the built-in very first time relay 23 of described electric cabinet, second time relay 24, the 3rd time relay 25, first miniature relay 26, the 4th time relay 27, the 5th time relay 28, second miniature relay 29, two open two No. 6 contacts and of closing self-locking operation button 31 outputs one termination first miniature relay 26 opens one and closes self-locking operation button 32, two open two closes No. 8 contacts that self-locking moves another termination first miniature relay 26 of button 31 outputs, No. 7 and No. 8 contacts of the 4th time relay 27, No. 7 and No. 8 contacts of the 5th time relay 28, No. 8 and No. 3 contacts of second miniature relay 29, one opens one closes No. 6 contacts that self-locking moves button 32 another termination second miniature relays 29, No. 5 contacts of first miniature relay 26 connect No. 1 and No. 2 contacts of the 4th time relay 27, No. 1 contact of first miniature relay 26 connects No. 4 contacts of the 5th time relay 28, No. 4 contacts of the 4th time relay 27 connect No. 1 contact of second miniature relay 29, No. 1 of the 5th time relay 28 and No. 2 contacts connect No. 5 contacts of second miniature relay 29, No. 2 contacts of second miniature relay 29 connect No. 7 and No. 8 contacts of very first time relay 23, No. 7 contacts of second miniature relay 29 connect No. 1 and No. 2 contacts of very first time relay 23, No. 4 of very first time relay 23 and No. 5 contacts connect pressure charging valve 22 and dropping valve 8, No. 3 contacts of very first time relay 23 connect No. 1 and No. 2 contacts of second time relay 24, No. 6 contacts of very first time relay 23 connect No. 7 and No. 8 contacts of second time relay 24, No. 4 contacts of second time relay 24 connect switching valve 4, No. 1 and No. 2 contacts of the 3rd time relay 25, No. 5 contacts of second time relay 24 connect switching valve 4 other ends, No. 7 and No. 8 contacts of the 3rd time relay 25, No. 3 of the 3rd time relay 25 and No. 6 contacts connect pressure charging valve 66.

Referring to Fig. 1 and Fig. 2, during use, after will being equipped with water tank 14 earlier and piling water, make the naturally water inlet of air by heat storage box 13 in the conversion jars 11 with its air discharge after, come setting pressure table one 5-1 and Pressure gauge two 5-2 again.Wait for for the first time and using: open boiler exhaust-valve 19, open tap water interface valve 18 and in boiler body 1, add water.Treat to close boiler exhaust-valve 19 earlier when water level satisfies, make running water air be added water pot exhaust-valve 17 and tap water interface valve 18 from adding 17 discharges of water pot exhaust-valve, closing then to adding water pot 3 injections.Pressing two opens two and closes self-locking operation button 31 and and open one and close self-locking operation button 32, power supply send electricity to give No. 8 and No. 1 contact (coil terminals) of very first time relay 23 by first miniature relay 26, the 4th time relay 27, second miniature relay 29, make coil working: the pressure charging valve 22 that adds water pot 3 has been opened in No. 4 of very first time relay 23 and No. 5 contacts makes the steam of boiler body 1 rapidly to the space supercharging that adds water pot 3, when pressure reached identical, its water added water one-way valve 10 water filling in boiler body 1 than heavy having opened naturally of vapour.When adding water one-way valve 10 1 and be opened into water, the pressure in the boiler body 1 promptly loses resistance, fully to add the pressure water filling in boiler body 1 rapidly in the water pot 3; The dropping valve 8 of also having opened conversion jar 11 when the time comes makes the interior steam of conversion jar 11 (except water, having the steam of N pressure operating this moment) to heat storage box 13 bottom discharges; After the steam in the conversion jar 11 had been arranged, the check valve 15 of surging was opened water inlet in conversion jar 11 automatically.When the water in adding water pot 3 has all added boiler body 1, time of very first time relay 23 regulated switch on, add water pot 3 like this, dropping valve 8 cuts out in No. 3 and No. 6 contacts.At this moment add the steam that has N pressure in the water pot 3, filled hot water in the conversion jar 11.By No. 6 of very first time relay 23 and No. 3 contacts sending electricity to give second time relay 24, No. 1 and No. 8 contacts of second time relay 24, coil working: switching valve 4 has been opened in No. 4 of second time relay 24 and No. 5 contacts, adds steams in the water pot 3 and annotates rapidly in the hot water in conversion jars 11 (from the bottom injection).When the steam in adding water pot 3 has all injected the water of conversion jar 11, add and do not had pressure in the water pot 3, the 3rd time relay 25 is adjusted to switches in No. 3 and No. 6 contacts, opened pressure charging valve 66, at this moment in the boiler body 1 steam rapidly to the space supercharging of conversion jars 11, with switching valve 4 rapidly to add water pot 3 in the water filling of hot water in the conversion jar 11 by opening wide, in adding water pot 3, the time of second time relay 24 regulated during filling water and switch on, so once add the EP (end of program) of water in No. 3 and No. 6 contacts.Then 27 times of the 4th time relay are set, switched in No. 3 and No. 6 contacts of the 4th time relay 27.At this moment the coil power of second miniature relay 29 is closed, and No. 5 and No. 6 contact energisings of second miniature relay 29 are closed very first time relay 23, second time relay 24, the

3rd time relay

25,28 work of the 5th time relay.Just add the control of water spacer time next time, the time-delay N time is just in the 5th time relay 28 adjusted.Like this, the 4th time relay 27 and the 5th time relay 28 switch mutually, have realized automatically adding water.

Referring to Fig. 1, the described check valve 15 peripheral hardware screen covers of surging prevent that impurity from entering.

Referring to Fig. 2; described two open two closes self-locking operation button 31 input termination earth leakage circuit-breaker 30 and power supply indicators 33; earth leakage circuit-breaker 30 another termination run indicator 34 of output and time dalay indicator lights 35; run indicator 34 another terminations two are opened two and are closed self-locking operation button 31 outputs and and open one and close self-locking operation button 32 outputs, and time dalay indicator light 35 another terminations one are opened one and closed the self-locking operation button 32 output other ends.It has the earth leakage protective effect and power supply, operation and time-delay situation is indicated.

Referring to Fig. 2, described pressure charging valve 22 also adds water indicator lamp 36, and switching valve 4 also connects conversion indicator lamp 37, and pressure charging valve 66 also connects the indicator lamp 38 of surging, and dropping valve 8 also connects step-down indicator lamp 39.Working condition to these valves is indicated.

Claims

1, a kind of boiler with automatic watering apparatus, it comprises boiler body (1) and electric cabinet, it is characterized in that: add the position on the waterline that water pot (3) is placed in boiler body (1), heat storage box (13) is submerged in and is equipped with among the water tank (14), conversion jar (11) is placed in the heat storage box (13), conversion jar (11) external has sealed guarantor's thermosphere (12), the capacity of heat storage box (13) is greater than three times of the capacity of changing jar (11), adding water pot (3) is connected with the venthole of boiler body (1) by pressure charging valve two (2), adding water pot (3) is connected and setting pressure table one (5-1) on tube connector by the bottom of switching valve (4) with conversion jar (11), the tube connector lower port is installed and is added water pot exhaust-valve (17), tube connector is provided with the check valve of surging (15) at the port of conversion jar (11) bottom, the bottom that adds water pot (3) adds water one-way valve (10) by band filler pipe (7) is connected with the filler of boiler body (1), the following end entrance of filler pipe (7) is installed tap water interface valve (18), the top air intake of conversion jar (11) is connected with the venthole of boiler body (1) by pressure charging valve six (6), the venthole of conversion jar (11) connects gland steam exhauster by dropping valve (8), gland steam exhauster passes the outside, the end that sealed guarantor's thermosphere (12) extends to conversion jar (11), setting pressure table two (5-2) on the gland steam exhauster, angle is opened in the gland steam exhauster lower end, have cooling water inlet (9) on the heat storage box (13), connect the bottom of stretching into heat storage box (13) from the waste heat return pipe (16) of boiler body (1), boiler body (1) connects boiler exhaust-valve (19), pressure charging valve two (2), switching valve (4), pressure charging valve six (6), the break-make of (8) four valves of dropping valve is controlled by electric cabinet.

2, the boiler of band automatic watering apparatus according to claim 1, it is characterized in that: the built-in very first time relay of described electric cabinet (23), second time relay (24), the 3rd time relay (25), first miniature relay (26), the 4th time relay (27), the 5th time relay (28), second miniature relay (29), two open two No. 6 contacts and of closing self-locking operation button (31) output one termination, first miniature relay (26) opens one and closes self-locking operation button (32), two open two closes No. 8 contacts that self-locking moves another termination first miniature relay (26) of button (31) output, No. 7 and No. 8 contacts of the 4th time relay (27), No. 7 and No. 8 contacts of the 5th time relay (28), No. 8 and No. 3 contacts of second miniature relay (29), one opens one closes No. 6 contacts that self-locking moves another termination second miniature relay (29) of button (32), No. 5 contacts of first miniature relay (26) connect No. 1 and No. 2 contacts of the 4th time relay (27), No. 1 contact of first miniature relay (26) connects No. 4 contacts of the 5th time relay (28), No. 4 contacts of the 4th time relay (27) connect No. 1 contact of second miniature relay (29), No. 1 of the 5th time relay (28) and No. 2 contacts connect No. 5 contacts of second miniature relay (29), No. 2 contacts of second miniature relay (29) connect No. 7 and No. 8 contacts of very first time relay (23), No. 7 contacts of second miniature relay (29) connect No. 1 and No. 2 contacts of very first time relay (23), No. 4 of very first time relay (23) and No. 5 contacts connect pressure charging valve two (2) and dropping valve (8), No. 3 contacts of very first time relay (23) connect No. 1 and No. 2 contacts of second time relay (24), No. 6 contacts of very first time relay (23) connect No. 7 and No. 8 contacts of second time relay (24), No. 4 contacts of second time relay (24) connect switching valve (4), No. 1 and No. 2 contacts of the 3rd time relay (25), No. 5 contacts of second time relay (24) connect switching valve (4) other end, No. 7 and No. 8 contacts of the 3rd time relay (25), No. 3 of the 3rd time relay (25) and No. 6 contacts connect pressure charging valve six (6).

3, the boiler of band automatic watering apparatus according to claim 1 is characterized in that: the described check valve of surging (15) peripheral hardware screen cover.

4, the boiler of band automatic watering apparatus according to claim 2; it is characterized in that: described two open two closes self-locking operation button (31) input termination earth leakage circuit-breaker (30) and power supply indicator (33); earth leakage circuit-breaker (30) is exported another termination run indicator (34) and time dalay indicator light (35); another termination two of run indicator (34) is opened two and is closed self-locking operation button (31) output and and open one and close self-locking operation button (32) output, and another termination one of time dalay indicator light (35) is opened one and closed self-locking operation button (32) the output other end.

5, the boiler of band automatic watering apparatus according to claim 2, it is characterized in that: described pressure charging valve two (2) also adds water indicator lamp (36), switching valve (4) also connects conversion indicator lamp (37), pressure charging valve six (6) also connects the indicator lamp of surging (38), and dropping valve (8) also connects step-down indicator lamp (39).