CN110319426B

CN110319426B - Heat exchange container

Info

Publication number: CN110319426B
Application number: CN201910607058.5A
Authority: CN
Inventors: 戴燕; 左小东; 陆俊林; 张辰星; 汪通鲜; 陈二东
Original assignee: TAIZHOU YUANWANG HEAT EXCHANGE EQUIPMENT CO Ltd
Current assignee: TAIZHOU YUANWANG HEAT EXCHANGE EQUIPMENT Co.,Ltd.
Priority date: 2019-07-06
Filing date: 2019-07-06
Publication date: 2021-01-26
Anticipated expiration: 2039-07-06
Also published as: CN110319426A

Abstract

The invention relates to the field of boiler waste heat utilization equipment, in particular to a heat exchange container, which comprises a flue, a waste heat utilization structure, a water inlet structure, a water outlet structure, a rotating structure, a transmission structure, a stirring structure and an ash removal structure, wherein the flue is provided with a heat exchange cavity; the waste heat utilization structure not only can make the rotating-structure rotate more fast to can make the frequency of stirring the structure and stirring accelerate, the stirring frequency is accelerated and will make the waste heat utilization structure heat more fast, utilize waste heat utilization mechanism and rotating-structure and stir the linkage of structure, not only can supplement each other, can also reduce the loss of the energy, and use through the cooperation of waste heat utilization structure and deashing structure, can also reduce the emission of dust, and the clearance of the dust of also being convenient for.

Description

Heat exchange container

Technical Field

The invention relates to the field of boiler waste heat utilization equipment, in particular to a heat exchange container.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The boiler is a water container heated on fire, a furnace is a place where fuel is combusted, and the boiler comprises a boiler and a furnace. The hot water or steam generated in the boiler can directly provide heat energy for industrial production and people life, and can also be converted into mechanical energy through a steam power device, or the mechanical energy is converted into electric energy through a generator. The boiler for supplying hot water is called a hot water boiler, is mainly used for life, and has a small amount of application in industrial production. The boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises.

In some high-altitude areas, a flue for flue gas emission is installed, but the heat outside the flue cannot be utilized, which causes resource waste.

Disclosure of Invention

To address the problems in the prior art, the present invention provides a heat exchange vessel.

The technical scheme adopted by the invention for solving the technical problems is as follows: a heat exchange container comprises a flue, a waste heat utilization structure, a water inlet structure, a water outlet structure, a rotating structure, a transmission structure, a stirring structure and a dust cleaning structure, wherein the waste heat utilization structure capable of utilizing the heat of flue gas in the flue is arranged outside the flue for discharging the flue gas of a boiler; the external top end of the waste heat utilization structure is connected with the water inlet structure for injecting water into the waste heat utilization structure, and the external bottom end of the waste heat utilization structure is connected with the water outlet structure for discharging water from the interior of the waste heat utilization structure; the top end of the flue is connected with the rotating structure which can rotate by using the flue gas in the flue, and the inside of the waste heat utilization structure is connected with the transmission structure for transmitting the power; the inside of waste heat utilization structure is equipped with can be right the inside water of waste heat utilization structure stirs the structure of stirring, be connected with on the inside lateral wall of flue and be used for to the inside dust of flue is collected and is shaken off the deashing structure.

Specifically, the waste heat utilization structure includes water jacket, fixing base, communicating pipe and steam outlet, the outside welding of flue has the center to have rectangle through-hole and inside hollow the water jacket, the bottom welding of flue has the cuboid structure the fixing base, the outside of flue is that the annular array distributes has a plurality of arcs communicating pipe, just communicating pipe with the inside of flue communicates with each other, "S" shape steam outlet locates the flue.

Specifically, the structure of intaking includes inlet tube and first valve body, the outside top welding "L" shape of water jacket the inlet tube, the outside of inlet tube is fixed first valve body.

Specifically, the water outlet structure comprises a water outlet pipe and a second valve body, the L-shaped water outlet pipe is welded at the bottom end of the outer portion of the water jacket, and the second valve body is fixed to the outer portion of the water outlet pipe.

Specifically, revolution mechanic includes stand, pivot and blade, the top of flue is symmetrical relation welding two the stand is two rotate between the stand and connect the pivot the outside of pivot is a plurality of arcs of cyclic annular array distribution the blade.

Specifically, the transmission structure includes carousel, bull stick, fixed cover, spout, slider and connecting rod, the one end fixedly connected with cylinder structure of pivot the carousel, just the pivot with the fixed point of carousel is located the central point of carousel, the carousel deviates from the one end of pivot is rotated and is connected with the bull stick, just the bull stick with the rotation point of carousel does not lie in the central point of carousel, the fixed rectangle of water jacketed inside fixed cover the inside of fixed cover is equipped with the spout, just the spout is loudspeaker column structure, the inside sliding connection of fixed cover has "concave" shape structure the slider, just the bull stick with the slider rotates to be connected, the slider deviates from the one end of bull stick is fixed the connecting rod.

Specifically, the stirring structure comprises a fixed plate, fixed columns and stirring pieces, wherein the fixed plate is fixed at one end of the connecting rod, the fixed plate is of a diamond structure, one end of the fixed plate, which is far away from the connecting rod, is in symmetrical relation and is rotatably connected with the two fixed columns, the stirring pieces are distributed outside the two fixed columns in an annular array mode and are of arc structures.

Specifically, the deashing structure is equipped with a plurality ofly, and is a plurality of the deashing structure be the echelonment distribute in the inside lateral wall of flue, it is a plurality of the deashing structure is all including connecing hawk, aerofoil, spring, vaulting pole and hitting the ball, connect the hawk rotate connect in the inside lateral wall of flue, connect the hawk to deviate from the fixed arc of one end of flue the aerofoil, the inside lateral wall of flue with connect between the hawk the spring, it is fixed on the lateral wall of flue the vaulting pole, just the vaulting pole deviates from the one end of flue is fixed hit the ball.

The invention has the beneficial effects that:

(1) according to the heat exchange container, the waste heat utilization structure can enable the rotating structure to rotate more quickly, so that the stirring frequency of the stirring structure is accelerated, the waste heat utilization structure can be heated more quickly due to the accelerated stirring frequency, the waste heat utilization structure can supplement each other and reduce energy consumption due to the linkage of the waste heat utilization structure, the rotating structure and the stirring structure, and the waste heat utilization structure and the ash removal structure are matched for use, so that the emission of dust can be reduced, and the dust can be conveniently cleaned.

(2) The heat exchange container is characterized in that the waste heat utilization structure is connected outside the flue, water in the waste heat utilization structure can be heated through flue gas heat in the flue, so that the flue gas heat in the flue can be utilized in a waste heat mode, the top end of the flue is connected with the rotating structure capable of rotating through flue gas flow direction in the flue, the stirring structure in the waste heat utilization structure is connected with the rotating structure through the transmission structure, the stirring structure can reciprocate in the waste heat utilization structure through the rotating work of the rotating structure, so that the water in the waste heat utilization structure can be continuously stirred, the heating speed of the water in the waste heat utilization structure can be increased, the maximum value of flue gas waste heat utilization in the flue is reached, waste heat is avoided, and the power of the stirring structure is driven through the flue gas flow direction in the flue, no external equipment is needed, thereby achieving the effect of saving energy.

(3) According to the heat exchange container, the fixing plate connected to one end of the connecting rod is of the rhombic structure and can play a role in reducing resistance in the vertical reciprocating process of the fixing plate, so that energy consumption can be reduced, the two fixing columns are rotationally connected to one end of the fixing plate in a symmetrical relationship, the plurality of arc-shaped stirring sheets are distributed outside the two fixing columns in an annular array mode, and the stirring sheets can drive water inside the water jacket to stir in the vertical reciprocating process of the fixing plate, so that the water can be in contact with a flue more frequently, the temperature rising speed of the water inside the water jacket can be increased, and the stirring sheets can automatically rotate under the resistance effect of the water inside the water jacket, so that the water inside the water jacket can be stirred more vigorously.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram illustrating a preheating structure of a preferred embodiment of a heat exchange container according to the present invention;

FIG. 2 is a schematic view of a coupling structure of the flue and the agitation structure shown in FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic view showing a connection structure of the driving structure and the agitating structure shown in fig. 1.

In the figure: 1. the device comprises a flue, 2, a waste heat utilization structure, 21, a water jacket, 22, a fixed seat, 23, a communicating pipe, 24, a steam outlet, 3, a water inlet structure, 31, a water inlet pipe, 32, a first valve body, 4, a water outlet structure, 41, a water outlet pipe, 42, a second valve body, 5, a rotating structure, 51, a stand column, 52, a rotating shaft, 53, a blade, 6, a transmission structure, 61, a rotating disc, 62, a rotating rod, 63, a fixed sleeve, 64, a sliding groove, 65, a sliding block, 66, a connecting rod, 7, a stirring structure, 71, a fixed plate, 72, a fixed column, 73, a stirring sheet, 8, a dust cleaning structure, 81, an ash receiving plate, 82, a wind plate, 83, a spring, 84, a support rod, 85 and a collision.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-4, the heat exchange container of the present invention comprises a flue 1, a waste heat utilization structure 2, a water inlet structure 3, a water outlet structure 4, a rotation structure 5, a transmission structure 6, a stirring structure 7 and an ash removal structure 8, wherein the waste heat utilization structure 2 capable of utilizing the heat of the flue gas inside the flue 1 is arranged outside the flue 1 for discharging the flue gas of the boiler; the top end of the outer part of the waste heat utilization structure 2 is connected with the water inlet structure 3 for injecting water into the waste heat utilization structure 2, and the bottom end of the outer part of the waste heat utilization structure 2 is connected with the water outlet structure 4 for discharging water from the inner part of the waste heat utilization structure 2; the top end of the flue 1 is connected with the rotating structure 5 which can rotate by using the flue gas in the flue 1, and the inside of the waste heat utilization structure 2 is connected with the transmission structure 6 for transmitting; the inside of waste heat utilization structure 2 is equipped with can be right the inside water of waste heat utilization structure 2 stirs stirring structure 7, be connected with on the inside lateral wall of flue 1 and be used for to the inside dust of flue 1 is collected and is shaken off deashing structure 8.

Specifically, the waste heat utilization structure 2 comprises a water jacket 21, a fixed seat 22, a communicating pipe 23 and a steam outlet 24, the outer portion of the flue 1 is welded with the water jacket 21 with a rectangular through hole at the center and hollow inside, the bottom end of the flue 1 is welded with the fixed seat 22 with a cuboid structure, the outer portion of the flue 1 is distributed with a plurality of arc-shaped communicating pipes 23 in an annular array manner, the communicating pipes 23 are communicated with the inside of the flue 1, the steam outlet 24 in an S-shaped manner is arranged on the flue 1, when in use, the flue 1 is firstly fixed at a discharge port of boiler flue gas through the fixed seat 22, the boiler flue gas is discharged from the flue 1, the outer portion of the flue 1 is distributed with the plurality of arc-shaped communicating pipes 23 in an annular array manner, and the inside of the communicating pipes 23 is communicated with the inside of the flue 1, the outside of the communicating pipe 23 contacts with the water inside the water jacket 21, and the arrangement of the communicating pipes 23 can increase the contact area between the flue 1 and the water inside the water jacket 21, so as to achieve a better waste heat utilization effect, when the water inside the water jacket 21 is heated, steam is generated, the generated steam flows out from the steam outlet 24, and the steam flowing out from the steam outlet 24 can enable the blades 53 to rotate faster, so that the stirring frequency of the stirring pieces 73 can be increased, dust inside the flue 1 can be adsorbed by the steam and fall off, and a dust cleaning effect can be achieved.

Specifically, the water inlet structure 3 includes a water inlet pipe 31 and a first valve body 32, the outer top end of the water jacket 21 is welded with the L-shaped water inlet pipe 31, the first valve body 32 is fixed outside the water inlet pipe 31, after the flue 1 is fixed, the water inlet pipe 31 is connected with an outer water pipe, then the first valve 32 is opened, the water jacket 21 is filled with water, and then the first valve 32 is closed.

Specifically, the water outlet structure 4 includes a water outlet pipe 41 and a second valve body 42, the L-shaped water outlet pipe 41 is welded to the bottom end of the exterior of the water jacket 21, the second valve body 42 is fixed to the exterior of the water outlet pipe 41, and after the water inside the water jacket 21 is heated, the second valve body 42 on the water outlet pipe 41 at the bottom end of the exterior of the water jacket 21 is opened, so that the water inside the water jacket 21 can be discharged for use.

Specifically, revolution mechanic 5 includes stand 51, pivot 52 and blade 53, the top of flue 1 is symmetrical relation welding two stand 51, two rotate between the stand 51 and connect pivot 52 the outside of pivot 52 is a plurality of arcs of cyclic annular array distribution blade 53, as the flue gas follow during the inside discharge of flue 1, under the effect of flue gas flow direction power, just can make to be the cyclic annular array distribution the pivot 52 is outside blade 53 takes place to rotate, through blade 53's rotation can accelerate the velocity of flow of the inside flue gas of flue 1, can also make pivot 52 rotates.

Specifically, transmission structure 6 includes carousel 61, bull stick 62, fixed cover 63, spout 64, slider 65 and connecting rod 66, the one end fixedly connected with cylinder structure of pivot 52 carousel 61, just pivot 52 with the fixed point of carousel 61 is located the central point of carousel 61, carousel 61 deviates from the one end rotation of pivot 52 is connected with bull stick 62, just bull stick 62 with the pivot point of carousel 61 is not located the central point of carousel 61, the fixed cover 63 of the fixed rectangle in inside of water jacket 21 the inside of fixed cover 63 is equipped with spout 64, just spout 64 is the horn-shaped structure, the inside sliding connection of fixed cover 63 has "concave" shape structure slider 65, just bull stick 62 with slider 65 rotates the connection, slider 65 deviates from the one end of bull stick 62 is fixed connecting rod 66, when pivot 52 rotates, just can drive to be fixed pivot 52 one end carousel 61 rotates, just can drive to rotate to be connected carousel 61 one end bull stick 62 rotates the inside of water jacket 21 is fixed cover 63 the inside of fixed cover 63 is equipped with loudspeaker form spout 64 the inside sliding connection of spout 64 has slider 65, just slider 65 with bull stick 62 rotates to be connected, bull stick 62 with the turning point of carousel 61 is not located the central point of carousel 61, through the theory of mechanics of crank connecting rod, carousel 61 rotates just can drive slider 65 is in do reciprocating linear motion about on the fixed cover 63.

Specifically, the stirring structure 7 includes a fixed plate 71, two fixed columns 72 and two stirring plates 73, the fixed plate 71 is fixed to one end of the connecting rod 66, the fixed plate 71 is of a diamond structure, one end of the fixed plate 71 away from the connecting rod 66 is connected with the two fixed columns 72 in a symmetrical manner, the stirring plates 73 are distributed on the outer portions of the two fixed columns 72 in an annular array manner, the stirring plates 73 are all of an arc structure, the slider 65 drives the connecting rod 66 to do vertical reciprocating linear motion, so that the fixed plate 71 fixed to one end of the connecting rod 66 can be driven to do vertical reciprocating linear motion, the fixed plate 71 is of a diamond structure, and can play a role in reducing resistance in the vertical reciprocating motion process of the fixed plate 71, so that energy consumption can be reduced, and the two fixed columns 72 are connected to one end of the fixed plate 71 in a symmetrical manner, a plurality of arc-shaped stirring pieces 73 are distributed outside the two fixing columns 72 in an annular array, in the process of up-and-down reciprocating motion of the fixing plate 71, the stirring pieces 73 can drive water inside the water jacket 21 to stir, so that the water can be in contact with the flue 1 more frequently, the heating speed of the water inside the water jacket 21 can be increased, and the stirring pieces 73 can automatically rotate under the resistance action of the water inside the water jacket 21, so that the water inside the water jacket 21 can be stirred more vigorously.

Specifically, the plurality of ash removal structures 8 are arranged, the plurality of ash removal structures 8 are distributed on the inner side wall of the flue 1 in a step shape, each ash removal structure 8 comprises an ash receiving plate 81, an air plate 82, a spring 83, a support rod 84 and a collision ball 85, the ash receiving plate 81 is rotatably connected to the inner side wall of the flue 1, one end of the ash receiving plate 81, which is far away from the flue 1, is fixedly provided with the arc-shaped air plate 82, the spring 83 is connected between the inner side wall of the flue 1 and the ash receiving plate 81, the support rod 84 is fixedly arranged on the side wall of the flue 1, one end of the support rod 84, which is far away from the flue 1, is fixedly provided with the collision ball 85, when dust falling off due to steam adsorption falls on the ash receiving plate 81, when the air flow in the flue 1 rises, the air plate 82 is driven to move upwards, and when the air flow in the flue 1 decreases, the wind plate 82 rotates downwards, the dust receiving plate 81 collides with the collision ball 85 under the elastic force of the spring 83, so that the dust on the dust receiving plate 81 can be shaken off, and the dust removing function is achieved.

When the boiler flue gas heating device is used, firstly, the flue 1 is fixed at a boiler flue gas exhaust port through the fixing seat 22, after the flue 1 is fixed, the water inlet pipe 31 is connected with an external water pipe, then the first valve 32 is opened, the water jacket 21 is filled with water, then the first valve 32 is closed, the boiler flue gas is exhausted from the flue 1, a plurality of arc-shaped communicating pipes 23 are distributed on the outside of the flue 1 in an annular array manner, the inside of the communicating pipe 23 is communicated with the inside of the flue 1, the outside of the communicating pipe 23 is contacted with the water inside the water jacket 21, through the arrangement of the communicating pipes 23, the contact area between the flue 1 and the water inside the water jacket 21 can be increased, so that a better waste heat utilization effect can be achieved, and steam can be generated after the water inside the water jacket 21 is heated, the generated steam flows out from the steam outlet 24, the steam flowing out from the steam outlet 24 can enable the blades 53 to rotate faster, so that the stirring frequency of the stirring pieces 73 can be increased, dust in the flue 1 can be adsorbed and dropped by the steam, and the effect of dust removal can be achieved; when the flue gas is discharged from the inside of the flue 1, the blades 53 distributed outside the rotating shaft 52 in an annular array can be rotated under the action of the flow direction force of the flue gas, the flow velocity of the flue gas in the flue 1 can be accelerated through the rotation of the blades 53, and the rotating shaft 52 can also be rotated; when the rotating shaft 52 rotates, the rotating disc 61 fixed at one end of the rotating shaft 52 can be driven to rotate, the rotating disc 61 can be driven to rotate, the rotating rod 62 connected to one end of the rotating disc 61 can be driven to rotate, the fixed sleeve 63 is fixed inside the water jacket 21, the horn-shaped sliding groove 64 is arranged inside the fixed sleeve 63, the sliding block 65 is connected inside the sliding groove 64 in a sliding manner, the sliding block 65 is connected with the rotating rod 62 in a rotating manner, the rotating point of the rotating rod 62 and the rotating disc 61 is not located at the central point of the rotating disc 61, and the rotating disc 61 can drive the sliding block 65 to do vertical reciprocating linear motion on the fixed sleeve 63 by the rotation of the rotating disc 61 through the mechanical principle of a crank connecting rod; the slide block 65 drives the connecting rod 66 to do vertical reciprocating linear motion, so as to drive the fixing plate 71 fixed at one end of the connecting rod 66 to do vertical reciprocating linear motion, the fixing plate 71 is of a diamond structure, and can play a role of reducing resistance in the vertical reciprocating motion process of the fixing plate 71, so as to reduce energy consumption, one end of the fixing plate 71 is rotationally connected with two fixing columns 72 in a symmetrical relationship, a plurality of arc-shaped stirring pieces 73 are distributed outside the two fixing columns 72 in an annular array, and in the vertical reciprocating motion process of the fixing plate 71, the stirring pieces 73 can drive the water inside the water jacket 21 to stir, so that the water can be in contact with the flue 1 more frequently, so as to accelerate the heating rate of the water inside the water jacket 21, and through the resistance effect of the water inside the water jacket 21, the stirring piece 73 can automatically rotate, so that the water inside the water jacket 21 can be further stirred more vigorously; after the water inside the water jacket 21 is heated, the second valve body 42 on the water outlet pipe 41 at the bottom end outside the water jacket 21 is opened, so that the water inside the water jacket 21 can be discharged for use.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A heat exchange vessel characterized by: the waste heat utilization device comprises a flue (1), a waste heat utilization structure (2), a water inlet structure (3), a water outlet structure (4), a rotating structure (5), a transmission structure (6), a stirring structure (7) and an ash removal structure (8), wherein the waste heat utilization structure (2) capable of utilizing the heat of flue gas in the flue (1) is arranged outside the flue (1) for discharging the flue gas of a boiler; the top end of the outer part of the waste heat utilization structure (2) is connected with the water inlet structure (3) for injecting water into the waste heat utilization structure (2), and the bottom end of the outer part of the waste heat utilization structure (2) is connected with the water outlet structure (4) for draining water from the inner part of the waste heat utilization structure (2); the top end of the flue (1) is connected with the rotating structure (5) which can rotate by using the flue gas in the flue (1), and the inside of the waste heat utilization structure (2) is connected with the transmission structure (6) for transmission; the stirring structure (7) capable of stirring water in the waste heat utilization structure (2) is arranged in the waste heat utilization structure (2), and the ash cleaning structure (8) used for collecting and shaking off dust in the flue (1) is connected to the inner side wall of the flue (1);

the waste heat utilization structure (2) comprises a water jacket (21), a fixed seat (22), a communicating pipe (23) and a steam outlet (24), the water jacket (21) with a rectangular through hole in the center and hollow inside is welded on the outer portion of the flue (1), the fixed seat (22) with a cuboid structure is welded on the bottom end of the flue (1), a plurality of arc-shaped communicating pipes (23) are distributed on the outer portion of the flue (1) in an annular array mode, the communicating pipes (23) are communicated with the inside of the flue (1), and the S-shaped steam outlet (24) is arranged on the flue (1);

the water inlet structure (3) comprises a water inlet pipe (31) and a first valve body (32), the L-shaped water inlet pipe (31) is welded at the top end of the outer part of the water jacket (21), and the first valve body (32) is fixed at the outer part of the water inlet pipe (31);

the water outlet structure (4) comprises a water outlet pipe (41) and a second valve body (42), the L-shaped water outlet pipe (41) is welded at the bottom end of the outer part of the water jacket (21), and the second valve body (42) is fixed at the outer part of the water outlet pipe (41);

the rotating structure (5) comprises upright columns (51), a rotating shaft (52) and blades (53), the two upright columns (51) are welded at the top end of the flue (1) in a symmetrical relation, the rotating shaft (52) is rotatably connected between the two upright columns (51), and a plurality of arc-shaped blades (53) are distributed outside the rotating shaft (52) in an annular array;

transmission structure (6) includes carousel (61), bull stick (62), fixed cover (63), spout (64), slider (65) and connecting rod (66), the one end fixedly connected with cylinder structure of pivot (52) carousel (61), just pivot (52) with the fixed point of carousel (61) is located the central point of carousel (61), carousel (61) deviates from the one end rotation of pivot (52) is connected with bull stick (62), just bull stick (62) with the turning point of carousel (61) is not located the central point of carousel (61), the inside fixed rectangle of water jacket (21) fixed cover (63) inside of fixed cover (63) is equipped with spout (64), just spout (64) are loudspeaker column structure, the inside sliding connection of fixed cover (63) has "concave" shape structure slider (65), the rotating rod (62) is rotatably connected with the sliding block (65), and one end of the sliding block (65) departing from the rotating rod (62) is fixed with the connecting rod (66);

the stirring structure (7) comprises a fixed plate (71), fixed columns (72) and stirring pieces (73), the fixed plate (71) is fixed at one end of the connecting rod (66), the fixed plate (71) is of a diamond structure, one end of the fixed plate (71), which is far away from the connecting rod (66), is in symmetrical relation and is rotationally connected with the two fixed columns (72), a plurality of stirring pieces (73) are distributed outside the two fixed columns (72) in an annular array, and the stirring pieces (73) are all of arc structures;

the ash removal structure (8) is provided with a plurality of ash removal structures (8), the ash removal structures (8) are distributed on the inner side wall of the flue (1) in a stepped manner, each ash removal structure (8) comprises an ash receiving plate (81), an air plate (82), a spring (83), a support rod (84) and a collision ball (85), the ash receiving plate (81) is rotatably connected to the inner side wall of the flue (1), the arc-shaped air plate (82) is fixed at one end, away from the flue (1), of the ash receiving plate (81), the spring (83) is connected between the inner side wall of the flue (1) and the ash receiving plate (81), the support rod (84) is fixed on the side wall of the flue (1), and the collision ball (85) is fixed at one end, away from the flue (1), of the support rod (84);

when the water jacket is used, the flue (1) is fixed at the exhaust port of boiler flue gas through the fixing seat (22), after the flue (1) is fixed, the water inlet pipe (31) is connected with an external water pipe, then the first valve body (32) is opened, the water jacket (21) is filled with water, then the first valve body (32) is closed, boiler flue gas can be exhausted from the flue (1), a plurality of arc-shaped communicating pipes (23) are distributed on the outer portion of the flue (1) in an annular array mode, the inner portion of each communicating pipe (23) is communicated with the inner portion of the flue (1), the outer portion of each communicating pipe (23) is in contact with the water in the corresponding water jacket (21), and the contact area between the flue (1) and the water jacket (21) can be increased through the arrangement of the plurality of communicating pipes (23), therefore, a better waste heat utilization effect can be achieved, when water in the water jacket (21) is heated, steam can be generated, the generated steam can flow out from the steam outlet (24), the steam flowing out from the steam outlet (24) can enable the blades (53) to rotate faster, the stirring frequency of the stirring sheets (73) can be accelerated, dust in the flue (1) can be adsorbed and dropped by the steam, the ash removing effect can be achieved, when the dust adsorbed and dropped by the steam falls on the ash receiving plate (81), when airflow in the flue (1) rises, the air plate (82) can be driven to move upwards, when the airflow in the flue (1) is reduced, the air plate (82) can rotate downwards, the ash receiving plate (81) can collide with the ball (85) under the elastic force of the spring (83) to collide, and therefore the dust on the ash receiving plate (81) can be shaken off, thereby achieving the effect of cleaning ash; when the flue gas is discharged from the inside of the flue (1), the blades (53) distributed outside the rotating shaft (52) in an annular array can be rotated under the action of the flow direction force of the flue gas, the flow speed of the flue gas in the flue (1) can be accelerated through the rotation of the blades (53), and the rotating shaft (52) can also be rotated; when the rotating shaft (52) rotates, the rotating disc (61) fixed at one end of the rotating shaft (52) can be driven to rotate, the rotating disc (61) rotates to drive the rotating rod (62) which is rotatably connected with one end of the rotating disc (61) to rotate, the fixing sleeve (63) is fixed in the water jacket (21), the trumpet-shaped sliding groove (64) is arranged in the fixing sleeve (63), the slide block (65) is connected inside the sliding groove (64) in a sliding way, and the slide block (65) is rotationally connected with the rotating rod (62), the rotating point of the rotating rod (62) and the rotating disc (61) is not positioned at the central point of the rotating disc (61), through the mechanical principle of a crank connecting rod, the rotating disc (61) can drive the sliding block (65) to do vertical reciprocating linear motion on the fixed sleeve (63) by rotating; the slide block (65) drives the connecting rod (66) to do vertical reciprocating linear motion, so that the fixing plate (71) fixed at one end of the connecting rod (66) can be driven to do vertical reciprocating linear motion, the fixing plate (71) is of a diamond structure and can play a role in reducing resistance in the vertical reciprocating motion process of the fixing plate (71), so that the energy consumption can be reduced, two fixing columns (72) are rotationally connected at one end of the fixing plate (71) in a symmetrical relationship, a plurality of arc-shaped stirring sheets (73) are distributed outside the two fixing columns (72) in an annular array manner, the stirring sheets (73) can drive water in the water jacket (21) to stir in the vertical reciprocating motion process of the fixing plate (71), so that the water can be in contact with the flue (1) more frequently, the temperature rising speed of the water in the water jacket (21) can be accelerated, and the stirring sheet (73) can automatically rotate through the resistance action of the water in the water jacket (21), so that the water in the water jacket (21) can be stirred more vigorously; after the water in the water jacket (21) is heated, the second valve body (42) on the water outlet pipe (41) at the bottom end of the outer part of the water jacket (21) is opened, and the water in the water jacket (21) can be discharged for use.