CN110425557B

CN110425557B - Straw boiler capable of removing coking in boiler body

Info

Publication number: CN110425557B
Application number: CN201910778556.6A
Authority: CN
Inventors: 刘�文; 陈余生; 孙强
Original assignee: Qiqihar Hongjia Energy Technology Co ltd
Current assignee: Qiqihar Hongjia Energy Technology Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2021-03-30
Anticipated expiration: 2039-08-22
Also published as: CN110425557A

Abstract

The invention discloses a straw boiler capable of removing coking in a boiler body, and belongs to the technical field of straw boilers. The furnace body is a cylindrical cylinder body with the upper end and the lower end without a sealing cover, a rotary grate capable of rotating is arranged between a feeding port and an air supply blower in the furnace body, the middle part of the rotary grate is communicated with an ash removal port, a furnace slag crushing device is fixed above the rotary grate in the furnace body, a straw bag breaking device is arranged on the inner wall of a furnace hearth above the furnace slag crushing device, straw bags are fed into the furnace body through the feeding port on the side wall of the furnace body, the rotary grate drives the straw bags to move, the driven straw bags collide with the straw bag breaking device, bundled belts of the straw bags are broken, the bag body is more fully combusted after being unfolded, and after the rotary grate rotates, the moving grate and the static furnace slag crushing device fixed in the furnace body realize relative movement, so that coking above the grate is removed, and the straw bags are discharged from.

Description

Straw boiler capable of removing coking in boiler body

Technical Field

The invention relates to a straw boiler capable of removing coking in a boiler body, belonging to the technical field of straw boilers.

Background

Because surplus straw resources in northern areas can not be fully utilized, a large amount of land can not be cultivated, in order to ensure normal farming of farmers, a large amount of straws are packed and stored, but the treatment of straw packages becomes the first problem of governments.

The method for warming residents in winter by burning straw bags is the most effective method at present. However, the number of boilers for burning the straw bags in the market is very small, and a large number of large boilers cannot ensure the sufficient burning of the straw bags, and the straws are rich in soil, moisture and sugar. The straw bag is not fully combusted in the hearth and is easy to coke. The combustion of a large boiler used for heating in enterprises can not reach the required 1200 ℃, the heating requirement of residents can not be met, and the residence and the life of the residents are influenced.

Therefore, the invention is necessary to provide a boiler which is beneficial to the complete combustion of the straw bag and can avoid coking.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the straw boiler capable of removing the coking in the boiler body, so that the straw bag can be crushed and unfolded in the boiler bore, the crushed straw can be suspended and combusted, the full contact between the straw in the hearth and the air can be increased, the straw above the fire grate can be stirred, the coking at the fire grate and the ash removal port can be removed in the stirring process, the service life of the boiler is prolonged, the service efficiency of the boiler is improved, and the combustion temperature is ensured to meet the specified requirements.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a straw boiler capable of removing coking in a boiler body comprises a boiler, a boiler heat exchanger 22, an air supply blower 10, a feed inlet 11, an air wall blower 12, an ash removal port 19, an air seal machine driving motor 20 and an air seal machine 21, wherein the boiler heat exchanger 22 is installed at the top of the boiler, a water pipe of the boiler heat exchanger 22 is connected with an external pipeline needing to be heated, a smoke exhaust pipeline is arranged at the top of the boiler heat exchanger 22, the bottom of the boiler is communicated with the ash removal port 19, the bottom of the ash removal port 19 is communicated with the air seal machine 21, the air seal machine 21 is driven by the air seal machine driving motor 20, the side wall of the bottom of the boiler is provided with the air supply blower 10 supplying air to the inside, the feed inlet 11 used for feeding is arranged on the side wall of the boiler, the air wall blower 12 preventing back smoke is arranged above the feed inlet 11, wherein the boiler is composed of a boiler body 1, a rotary fire grate, a, a rotary fire grate is arranged between a feed inlet 11 and an air supply blower 10 in a furnace body 1, the middle part of the rotary fire grate is communicated with an ash removal port 19, a slag crushing device is fixed above the rotary fire grate in the furnace body 1, a straw bag breaking device is arranged on the inner wall of a furnace hearth above the slag crushing device, a straw bag 16 is fed into the furnace body through the feed inlet 11 on the side wall of the furnace body 1, the rotary fire grate drives the straw bag 16 to move, the driven straw bag 16 collides with the straw bag breaking device to break a bound belt of the straw bag, the bag is more fully combusted after being unfolded, and after the rotary fire grate rotates, the moving fire grate and the static slag crushing device fixed in the furnace body 1 realize relative movement, so that coking above the fire grate is removed and is discharged from the ash removal port 19;

the rotary fire grate comprises an annular base 2, a supporting wheel 3, a chain 4, a supporting sleeve 5, a conical disc fire grate 6, a hood 8, a servo motor 17, a chain wheel 18 and a cast iron fire grate 23, wherein the annular base 2 is welded at the bottom end inside the furnace body 1, a plurality of annular array supporting wheels 3 are fixed inside the annular base 2 through bolts, a cylindrical supporting sleeve 5 is supported inside the supporting wheel 3, the outer wall of the supporting sleeve 5 is provided with the annularly wound chain 4 fixed through screws, the servo motor 17 is fixed on the annular base 2 beside the chain 4, the shaft end of the servo motor 17 is positioned inside the annular base 2 outside the supporting sleeve 5, the shaft end of the servo motor 17 is connected with the chain 4 through the chain wheel 18, the supporting sleeve 5 for fixing the chain 4 is driven through the chain wheel 18 after the servo motor 17 rotates, the conical disc fire grate 6 is fixed above the supporting sleeve 5, the conical disc fire grate 6 is a conical disc body, a circular hollow area is formed in the center of the conical disc grate 6 and is communicated with an ash removal port 19, a plurality of circles of round holes are formed in the top of the conical disc grate 6 in an annular array mode, wind caps 8 with top end sealing side wall holes are fixed on the round holes, the side wall holes of the wind caps 8 can send wind of a cavity below the conical disc grate 6 in the furnace body 1 in a sealing mode to the upper portion of the conical disc grate 6, cast iron grates 23 are fixed above the conical disc grate 6, the same circular hollow areas of the conical disc grate 6 are formed in the center of the cast iron grates 23, a plurality of equidistant long-strip rectangular grooves are formed in the cast iron grates 23, the bottom end of the annular base 2 is located on the ground or a table top and is sealed, and wind in the cavity is generated by an; wherein the diameter of the conical disc grate 6 is more than or equal to 3 m, and the gradient of the conical surface of the conical disc grate 6 is 10-20 degrees.

The slag crushing device consists of a grey scraper 7 and a slag crushing pipe 9, wherein the slag crushing pipe 9 is inserted from one side of the furnace body 1 and extends out from the other side of the furnace body 1, the slag crushing pipe 9 is positioned on the diameter line of a cast iron grate 23, the pipe wall of the slag crushing pipe 9 is parallel to the cast iron grate 23, the grey scraper 7 inserted into a central circular hollowed-out area of the cast iron grate 23 and a conical disc grate 6 is arranged on the side wall at the bottom end of the slag crushing pipe 9, when the cast iron grate 23 and the conical disc grate 6 rotate together, the slag coked above the cast iron grate 23 can be scraped by the slag crushing pipe 9 which moves relatively, the scraped slag slides along the inclined plane of the conical disc grate 6 to the central circular hollowed-out area, part of the slid slag can be adhered to the side wall of the ash removing opening 19, and the cylindrical ash removing opening 19 moves together with the conical disc grate 6, and the part of the slag can be fixed on the grey, and discharging the slag through an air seal machine 21, wherein the distance between the wall of the slag crushing pipe 9 and the cast iron grate 23 is 1-2cm, and the distance between the ash hole scraper 7 and the side wall of the barrel body of the ash removing hole 19 is 1-2 cm.

The straw bale breaking device is composed of a bale breaking device 14 and a water pipe connector 15, the bale breaking device 14 is a rectangular box body with the front end in a quadrangular pyramid shape, a partition plate for dividing the bale breaking device 14 into a left cavity and a right cavity is arranged inside the bale breaking device 14, the front end of the partition plate does not extend to the conical end of the bale breaking device 14, the left cavity and the right cavity of the bale breaking device 14 are ensured to be communicated at the conical end of the bag breaking device 14, the water pipe connector 15 communicated with the left cavity and the right cavity of the bale breaking device are respectively arranged at the rear end of the bale breaking device 14, three bale breaking devices 14 are inserted into the side wall of a hearth of the furnace body 1, the three bale breaking devices 14 and the feeding port 11 are arranged along an annular array at an angle of 90 degrees of the side wall of the furnace body 1, one of the three bale breaking devices 14 is positioned in the middle of the furnace body 1, the.

Wherein, the slag crushing pipe 9 and the bag breaking device 14 are connected in series through a water pipe and are driven by a water pump to circulate.

Wherein, the slag crushing pipe is connected with the bag breaker in series through a water pipe and is driven by a water pump to circulate.

The invention has the beneficial effects that: the boiler can enable straw bags to rotate along with a grate at a furnace bore, the straw bags can be broken and unfolded through a bag breaking device fixed by a furnace body in the rotating process, broken straws are flatly laid on a rotating grate, stirring is carried out through relative motion of a slag breaking pipe, and air supply is carried out through an air cap, suspension combustion is carried out on a straw cast iron grate and a conical disc grate, sufficient contact of the straws and air in the hearth is increased, coking at the grate and an ash removing port can be removed through the slag breaking pipe in the stirring process, the grate is enabled to ventilate normally, the ash removing port removes ash smoothly, the failure rate of the boiler is reduced, the maintenance and repair period of the boiler is prolonged, the service life of the boiler is prolonged, the service efficiency of the boiler is improved, and the combustion temperature is guaranteed to meet the specified requirements.

Drawings

The invention is further described with reference to the following figures and detailed description.

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the furnace structure of the present invention.

FIG. 3 is a top view of the furnace body of the present invention.

Fig. 4 is a schematic view of the structure of the ring-shaped base of the present invention.

Reference numbers in the figures:

1. the furnace body, 2, an annular base, 3, a supporting wheel, 4, a chain, 5, a supporting sleeve, 6, a conical disc grate, 7, an ash hole scraper, 8, a hood, 9, a slag crushing pipe, 10, an air supply blower, 11, a feeding hole, 12, an air wall blower, 13, a fireproof material layer, 14, a bag breaking device, 15, a water pipe joint, 16, a straw bag, 17, a servo motor, 18, a chain wheel, 19, an ash removing hole, 20, an air seal device driving motor, 21, an air seal device, 22, a boiler heat exchanger, 23 and grate cast iron.

Detailed Description

As shown in figures 1-4, a straw boiler capable of removing coking in the boiler body comprises a boiler, a boiler heat exchanger 22, an air supply blower 10, a feed inlet 11, an air wall blower 12, an ash removal port 19, an air seal machine driving motor 20 and an air seal machine 21, wherein the boiler heat exchanger 22 is arranged at the top of the boiler, a water pipe of the boiler heat exchanger 22 is connected with an external pipeline to be heated, a smoke exhaust pipeline is arranged at the top of the boiler heat exchanger 22, the bottom of the boiler is communicated with the ash removal port 19, the bottom of the ash removal port 19 is communicated with the air seal machine 21, the air seal machine 21 is driven by the air seal machine driving motor 20, the air supply blower 10 for supplying air to the inside is arranged on the side wall of the bottom of the boiler, the feed inlet 11 for feeding is arranged on the side wall of the boiler, the air wall blower 12 for preventing smoke return is arranged above the feed inlet 11, wherein the boiler, the furnace body 1 is a cylindrical cylinder body without a sealing cover at the upper end and the lower end, a rotary grate capable of rotating is arranged between a feeding port 11 and an air supply blower 10 in the furnace body 1, the middle part of the rotary grate is communicated with an ash removal port 19, a furnace slag crushing device is fixed above the rotary grate in the furnace body 1, a straw bag breaking device is arranged on the inner wall of a furnace hearth above the furnace slag crushing device, a straw bag 16 is fed into the furnace body through the feeding port 11 on the side wall of the furnace body 1, the rotary grate drives the straw bag 16 to move, the driven straw bag 16 can collide with the straw bag breaking device to break a tied belt, the bag body is more fully combusted after being unfolded, and after the rotary grate rotates, the moving grate and the static furnace slag crushing device fixed in the furnace body 1 realize relative motion, so that coking above the grate is removed and is discharged from the ash removal port 19;

The straw bag 16 is fed into a hearth from a feeding hole 11 and is made to fall on a cast iron grate 23, the cast iron grate 23 and a conical disc grate 6 are driven by a servo motor 17 through a chain wheel 18 to rotate through a chain 4, the straw bag 16 is driven by the rotating cast iron grate 23 to rotate and burn at the inner side of the hearth, in the rotating process, the straw bag is gradually cut off and separated by a cone point at the front end of a bag breaker 14 on the side wall of the hearth to form broken straw, the broken straw is tiled on the conical disc grate 6, an air supply blower 10 blows air into the conical disc grate 6 through an air cap 8, the straw is made to suspend, the contact area of the straw and air is increased, the straw is made to be fully burnt, and a boiler heat exchanger 22 is heated to generate hot water.

Straw ash and slag (coking) generated by combustion move to an ash removal port 19 under the action of air blowing through an air cap 8 and the inclination angle of a conical disc furnace row 6; the slag adhered on the conical disc furnace row 6 is extruded and crushed by a slag crushing pipe 9 at the position 1-2cm above the conical disc furnace row 6 and moves to an ash removal port 19 under the action of air blowing of a blast cap 8 and the inclination angle of the conical disc furnace row 6, and coking at the ash removal port 19 is crushed and removed by an ash removal port scraper 7.

The furnace slag crushing pipe 9 and the ladle breaking device 14 are positioned in the high-temperature environment of the hearth, and the interior of the furnace slag crushing pipe and the ladle breaking device are circularly cooled by cooling water, so that the service life can be prolonged, and the work is more reliable.

Claims

1. A straw boiler capable of removing coking in a boiler body comprises a boiler, a boiler heat exchanger (22), an air supply blower (10), a feed inlet (11), an air wall blower (12), an ash removal opening (19), an air seal driving motor (20) and an air seal (21), wherein the boiler heat exchanger (22) is installed at the top of the boiler, a water pipe of the boiler heat exchanger (22) is connected with an external pipeline needing to be heated, a smoke exhaust pipeline is arranged at the top of the boiler heat exchanger (22), the bottom of the boiler is communicated with the ash removal opening (19), the bottom of the ash removal opening (19) is communicated with the air seal (21), the air seal (21) is driven by the air seal driving motor (20), the air supply blower (10) supplying air to the interior is arranged on the side wall of the bottom of the boiler, the feed inlet (11) used for feeding is arranged on the side wall of the boiler, the air wall (12), the method is characterized in that: the boiler consists of a boiler body (1), a rotary grate, a straw bale breaking device and a slag crushing device, wherein the boiler body (1) is a cylindrical barrel body of which the upper end and the lower end are not provided with a sealing cover, the rotary grate capable of rotating is arranged between a feed inlet (11) and an air supply blower (10) in the boiler body (1), the middle part of the rotary grate is communicated with an ash removal port (19), the slag crushing device is fixed above the rotary grate in the boiler body (1), the straw bale breaking device is arranged on the inner wall of a hearth above the slag crushing device, straw bales (16) are fed into the boiler body through the feed inlet (11) on the side wall of the boiler body (1), the rotating rotary grate drives the straw bales (16) to move, the driven straw bales (16) can collide with the straw bale breaking device, so that the tied up belts of the straw bales are broken, the bales are more fully combusted after the bales are unfolded, and after the rotary grate rotates, the moving grate and the static, thereby removing the coking above the fire grate and discharging the coking from an ash removing port (19), wherein the rotary fire grate consists of an annular base (2), a supporting wheel (3), a chain (4), a supporting sleeve (5), a conical disc fire grate (6), a hood (8), a servo motor (17), a chain wheel (18) and a cast iron fire grate (23), the annular base (2) is welded at the bottom end inside the furnace body (1), the supporting wheel (3) of a plurality of annular arrays is fixed inside the annular base (2) through bolts, the cylindrical supporting sleeve (5) is supported in the supporting wheel (3), the annular winding chain (4) fixed through screws is arranged on the outer wall of the supporting sleeve (5), the servo motor (17) is fixed on the annular base (2) beside the chain (4), and the shaft end of the servo motor (17) is positioned in the annular base (2) outside the supporting sleeve (5), the axle head of servo motor (17) passes through sprocket (18) and is connected with chain (4), servo motor (17) rotate the back through support cover (5) of sprocket (18) drive fixed chain (4), be fixed with conical plate grate (6) in support cover (5) top, conical plate grate (6) are a circular cone type disk body, circular fretwork district has been seted up at conical plate grate (6) center, this circular fretwork district with remove grey mouth (19) intercommunication, conical plate grate (6) top annular array has seted up several rings of round holes, all be fixed with hood (8) of the trompil of top seal lateral wall on the round hole, the side wall hole of hood (8) can be with the wind of the sealed below cavity of conical plate grate (6) in furnace body (1) send its top into, its characterized in that:

a cast iron grate (23) is fixed above the conical disc grate (6), a circular hollow area which is the same as the conical disc grate (6) is formed in the center of the cast iron grate (23), a plurality of rectangular grooves which are equally spaced are formed in the cast iron grate (23), the bottom end of the annular base (2) is sealed when being located on the ground or a table top, and air in the cavity is generated by an air supply blower (10); the slag crushing device consists of a grey hole scraper (7) and a slag crushing pipe (9), wherein the slag crushing pipe (9) is inserted from one side of the furnace body (1) and extends out from the other side of the furnace body (1), the slag crushing pipe (9) is positioned on the diameter line of the cast iron grate (23), the pipe wall of the slag crushing pipe (9) is parallel to the cast iron grate (23), the grey hole scraper (7) inserted into the cast iron grate (23) and the central circular hollowed-out area of the conical disc grate (6) is arranged on the side wall of the bottom end of the slag crushing pipe (9), when the cast iron grate (23) and the conical disc grate (6) rotate together, the coked slag above the cast iron grate and the conical disc grate (6) can be scraped by the slag crushing pipe (9) which relatively move, the scraped slag slides down to the central circular hollowed-out area along the inclined plane of the conical disc grate (6), part of the sliding slag can be adhered to the side wall of the grey hole (19), and the cylindrical grey hole (19) can, the partial slag can be scraped by an ash opening scraper (7) fixed on a slag crushing pipe (9) and is discharged through an air seal machine (21); the straw bale breaking device consists of a bale breaker (14) and a water pipe joint (15), the bale breaker (14) is a rectangular box body with the front end in a quadrangular pyramid shape, a partition plate for dividing the bale breaker (14) into a left cavity and a right cavity is arranged in the bale breaker (14), the front end of the partition plate does not extend to the conical end of the bale breaker (14), the left cavity and the right cavity of the bale breaker (14) are ensured to be communicated at the conical end, the rear end of the bag breaker (14) is respectively provided with a water pipe joint (15) communicated with the left cavity and the right cavity, three bag breaking devices (14) are inserted into the side wall of a hearth of the furnace body (1), the three bag breaking devices (14) and the feed inlet (11) are arranged along an annular array at an angle of 90 degrees on the side wall of the furnace body (1), one of the three bag breaking devices (14) is positioned in the middle of the furnace body (1), the other one is positioned above the furnace body, the other one is positioned below the furnace body, and water pipe connectors (15) of the three bag breaking devices (14) are positioned outside the side wall of the furnace body (1); the slag crushing pipe (9) is connected with the ladle breaker (14) in series through a water pipe and is driven by a water pump to circulate.

2. The straw boiler capable of removing coking in the boiler body according to claim 1, is characterized in that: the diameter of the conical disk fire grate (6) is more than or equal to 3 meters, and the gradient of the conical surface of the conical disk fire grate (6) is 10-20 degrees.

3. The straw boiler capable of removing coking in the boiler body according to claim 1, is characterized in that: the distance between the wall of the slag crushing pipe (9) and the cast iron grate (23) is 1-2cm, and the distance between the ash port scraper (7) and the side wall of the barrel of the ash removal port (19) is 1-2 cm.