Bundled straw direct-fired module fast-assembly boiler

Abstract

The utility model relates to a bundled straw direct-fired module fast-assembly boiler which is partially arranged above a fire grate and comprises a stock bin, a direct-fired module and a heat exchanger, the combustion cavity is located below the stock bin; the water cooling device and the stock bin are arranged in the length direction of the fire grate, and the water cooling device is connected to the combustion cavity; the heat exchange device is connected to the water cooling device and located on the side, away from the stock bin, of the water cooling device. According to the technical scheme, the combustion cavity is arranged below the stock bin, so that the whole bag breaking process is in a high-temperature environment, the bag breaking difficulty is reduced, most straw fuel is consumed, and the follow-up fuel consumption pressure is relieved; meanwhile, the stock bin, the water cooling system and the heat exchange device are all independent modules and can be independently transported to an installation site to be combined and spliced conveniently, compared with a traditional boiler, a large amount of site building and welding work is omitted, the installation period is greatly shortened, and the installation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of straw combustion device, in particular to a bale straw direct combustion module quick -mounting boiler. BACKGROUND

[0002] With the development of bale straw direct combustion technology, the furnace body matched with it is also updated. The existing bale straw direct combustion boiler, the furnace body structure is mostly the design of traditional coal-fired boiler with arch, however, straw fuel has the characteristics of high volatile matter content, fast burning speed and low energy density, which is completely different from coal combustion and is not suitable for straw fuel combustion.

[0003] The existing bale straw direct combustion boiler is limited by the size and self weight when the rated power exceeds 10.5MW, cannot be transported as a whole to the factory, needs to be built with refractory concrete material at the installation site, and also needs to do a lot of welding work, so that the installation period is long, and the installation cost is high. UTILITY MODEL CONTENT

[0004] The utility model discloses a bale straw direct combustion module quick-mounting boiler, which solves the problems of inconvenient transportation and complex installation of the existing bale straw direct combustion boiler.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A bale straw direct combustion module quick-mounting boiler is arranged above the grate, comprising:

[0007] a bunker;

[0008] a combustion chamber located below the bunker;

[0009] a water cooling device arranged along the length direction of the grate and connected to the combustion chamber;

[0010] a heat exchange device connected to the water cooling device and located on the side of the water cooling device away from the bunker.

[0011] Preferably, the combustion chamber is provided with an outlet on the side close to the water cooling device, the water cooling device is provided with a connecting port on the side close to the combustion chamber, the outlet and the connecting port are connected through a connecting arch, and the connecting arch is located outside the bunker.

[0012] Preferably, the water cooling device comprises a first water cooling part and a second water cooling part, and the first water cooling part and the second water cooling part are connected.

[0013] Preferably, the first water cooling part comprises a first drum, a first membrane wall pipe group and a first header; one end of the first membrane wall pipe group is communicated with the drum, and the other end is communicated with the first header; the first membrane wall pipe group is provided with at least two groups, and each of the first membrane wall pipe groups is arranged at intervals.

[0014] Preferably, the first water cooling part further comprises a first membrane wall side pipe group, a first upper header and a first lower header; the first membrane wall side pipe group is arranged on one side of the first membrane wall pipe group close to the combustion chamber and surrounded by the first membrane wall pipe group to form a first hearth; the top end of the first membrane wall side pipe group is communicated with the first upper header, the first upper header is communicated with the first drum, the bottom end of the first membrane wall side pipe group is communicated with the first lower header, and the first lower header is communicated with the first header.

[0015] Preferably, the second water cooling part comprises a second drum, a second membrane wall pipe group and a second header; one end of the second membrane wall pipe group is communicated with the second drum, and the other end is communicated with the second header; the second membrane wall pipe group is provided with at least two groups, and each of the second membrane wall pipe groups is arranged at intervals.

[0016] Preferably, the second water cooling part further comprises a second membrane wall side pipe group, a second upper header and a second lower header; the second membrane wall side pipe group is arranged on one side of the second membrane wall pipe group close to the heat exchange device and surrounded by the second membrane wall pipe group to form a second hearth; the top end of the second membrane wall side pipe group is communicated with the second upper header, the second upper header is communicated with the second drum, the bottom end of the second membrane wall side pipe group is communicated with the second lower header, and the second lower header is communicated with the second header.

[0017] Preferably, the water cooling device further comprises a first connecting water box and a second connecting water box, the first connecting water box is connected to the first drum and the second drum, and the second connecting water box is connected to the first header and the second header.

[0018] Preferably, the height of the first membrane wall side pipe group is less than that of the second membrane wall side pipe group, the first lower header is arranged in a "U" shape with an opening downward, the opening is the connecting port, and the second membrane wall side pipe group is provided with a smoke outlet.

[0019] Preferably, a plurality of bale breaking devices are arranged in the combustion chamber, each of the bale breaking devices comprises a bale breaking roller and a heat collecting and air distribution pipe, the heat collecting and air distribution pipe comprises a vertical part and a horizontal part, one end of the vertical part is communicated with the bale breaking roller, the other end is communicated with the horizontal part, the horizontal part and the bale breaking roller are arranged in parallel and at intervals, and an air passage is formed between the bale breaking roller and the horizontal part.

[0020] Preferably, the broken bag roller is hollow, and a plurality of hollow spikes are formed on the outer wall of the broken bag roller, each of the hollow spikes is arranged in communication with the broken bag roller, and each of the hollow spikes is provided with a first air outlet.

[0021] Preferably, the outer wall of the horizontal part extends to form a plurality of hollow short pipes, each of the hollow short pipes is arranged in communication with the horizontal part, and each of the hollow short pipes is provided with a second air outlet.

[0022] Preferably, the broken bag device further comprises a driving member and an air blower, the driving member is connected to one end of the broken bag roller away from the heat collecting and air distributing pipe, and the air blower is connected to one end of the heat collecting and air distributing pipe away from the broken bag roller.

[0023] Preferably, the heat exchange device is arranged on the ground and comprises an inlet smoke box, a flow assembly and an outlet smoke box, one end of the flow assembly is connected to the inlet smoke box, and the other end is in communication with the outlet smoke box, and the inlet smoke box is connected to the smoke outlet of the water cooling device.

[0024] Preferably, the flow assembly comprises a first return smoke pipe, a second return smoke pipe and a turning smoke chamber, one end of the first return smoke pipe is in communication with the inlet smoke box, and the other end is in communication with the turning smoke chamber, one end of the second return smoke pipe is in communication with the turning smoke chamber, and the other end is in communication with the outlet smoke box.

[0025] Compared with the prior art, the utility model has the beneficial effects that:

[0026] According to the characteristics of high volatile matter content, fast combustion speed and low energy density of the straw fuel, the above technical scheme provides a bale straw direct combustion module fast boiler, compared with the traditional boiler of the prior art, the furnace arch is cancelled, which is more suitable for the combustion of the straw, and the production cost is reduced; by arranging the combustion cavity below the stock bin, the whole broken bag process is in a high-temperature environment, the broken bag difficulty is reduced, most of the straw fuel is consumed, and the follow-up fuel consumption pressure is reduced; meanwhile, the stock bin, the water cooling system and the heat exchange device are independent modules, which are convenient for independent transportation to the installation site for combination and splicing, compared with the traditional boiler, a large amount of on-site masonry and welding work is saved, the installation period is greatly shortened, and the installation cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is a side view of the bale straw direct combustion module fast boiler in the utility model embodiment.

[0028] Fig. 2 It is a schematic view of the broken bag device in the bale straw direct combustion module fast boiler in the utility model embodiment.

[0029] Fig. 3The utility model discloses a water cooling device's step sectional schematic diagram of the quick -witted boiler of bale straw direct combustion module among the embodiments of the utility model.

[0030] Fig. 4 The utility model discloses a schematic diagram before the assembly of water cooling device in the quick -witted boiler of bale straw direct combustion module among the embodiments of the utility model.

[0031] Explanation of drawing symbols:

[0032] 1, grate;

[0033] 2, stock bin;21, feed inlet;

[0034] 3, combustion chamber;31, fire outlet;32, bale breaking device;321, bale breaking roller;3211, hollow spike;3212, first air outlet;322, heat collecting and air distribution pipe;3221, hollow short pipe;3222, second air outlet;323, driving part;324, air blower;325, sealing element;326, air bellow;33, furnace door;

[0035] 4, water cooling device;41, connecting port;42, first water cooling part;421, first boiler drum;422, first membrane wall pipe group;423, first header;424, first membrane wall side pipe group;425, first upper header;426, first lower header;427, first downcomer;43, second water cooling part;431, second boiler drum;432, second membrane wall pipe group;433, second header;434, second membrane wall side pipe group;4341, smoke outlet;435, second upper header;436, second lower header;437, second downcomer;44, first connecting water box;45, second connecting water box;46, observation door;

[0036] 5, heat exchange device;51, inlet smoke box;52, outlet smoke box;53, first return smoke pipe;54, second return smoke pipe;55, turning smoke chamber;551, dust removal door;

[0037] 6, connecting arch;

[0038] 7, overfire air fan. DETAILED DESCRIPTION

[0039] The utility model will be described in more detail in the following, need explaining, the following description of the utility model is only illustrative, and is not limitedly. Various different embodiments can be combined with each other to constitute other embodiments not shown in the following description.

[0040] In the description of the utility model, it is necessary to explain that the orientation or positional relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relation based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the utility model, it is necessary to explain that the terms "installation", "connection", "connection" should be understood broadly unless otherwise specified and limited, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] The utility model embodiment provides a kind of bale straw direct combustion module fast installation boiler, which is connected to water cooling device 4 by being arranged in the combustion cavity 3 of bunker 2 below, and water cooling device 4 is connected to heat exchange device 5, wherein bunker 2, water cooling device 4, heat exchange device 5 are all independent module, can be realized independent transportation to installation site combination splicing, compared with traditional boiler, save a lot of field masonry and welding work, greatly shorten installation cycle, reduce installation cost;Combustion cavity 3 is arranged below bunker 2 simultaneously, so that the whole broken package process is in high-temperature environment, reduce broken package difficulty, while consuming most of straw fuel, reduce subsequent fuel consumption pressure.

[0043] Please refer to Figs. 1 to 4 The bale straw direct combustion module fast installation boiler includes the bunker 2 with the combustion cavity 3 below, the water cooling device 4 connected to the combustion cavity 3, and the heat exchange device 5 connected to the water cooling device 4;Wherein, bunker 2 and water cooling device 4 are arranged on the grate 1, and are arranged along the length direction of the grate 1, and heat exchange device 5 is vertically arranged on the ground.

[0044] In one embodiment, the feed bin 2 is provided with a feed inlet 21 above; the combustion chamber 3 is arranged below the feed bin 2 to accept the falling straw of the feed bin 2 for direct combustion, the side wall of the combustion chamber 3 is a concrete wrapped film wall structure, the concrete has heat storage property for creating a high temperature environment; a plurality of breaking devices 32 are arranged in the combustion chamber 3, wherein the breaking device 32 is located at an upper position in the combustion chamber 3, so that the whole breaking process is always in a high temperature environment, which reduces the breaking difficulty, consumes most of the fuel, reduces the subsequent combustion pressure, facilitates early contact with the falling straw and reserves more falling space for the burned straw. Specifically, the breaking device 32 includes a breaking roller 321, a heat collecting and air distributing pipe 322, a driving member 323 and a blower 324; one end of the breaking roller 321 is connected to the driving member 323, and the other end is connected to the heat collecting and air distributing pipe 322; the end of the heat collecting and air distributing pipe 322 away from the breaking roller 321 is connected to the blower 324; a sealing member 325 is further arranged between the breaking roller 321 and the driving member 323 to enhance the sealing strength between the breaking roller 321 and the driving member 323; a sealing member 325 is further arranged between the heat collecting and air distributing pipe 322 and the breaking roller 321 to enhance the sealing strength between the heat collecting and air distributing pipe 322 and the breaking roller 321; wherein the driving member 323 is a speed reducer to drive the breaking roller 321 to rotate; in addition, a bellows 326 is further arranged between the heat collecting and air distributing pipe 322 and the blower 324 to increase air flow to improve combustion efficiency; the cooperation of the blower 324 and the bellows 326 can provide high temperature and high pressure combustion-supporting air in the combustion chamber 3 to further improve the combustion efficiency of the straw.

[0045] Specifically, the breaking roller 321 is hollow and the outer wall extends to form a plurality of hollow spikes 3211 in communication with the breaking roller 321, each hollow spike 3211 is provided with a first air outlet 3212, and the plurality of hollow spikes 3211 facilitate tearing the baled straw, so that the straw is more fully burned; the heat collecting and air distributing pipe 322 includes a vertical part and a horizontal part, the vertical part is connected to one end of the breaking roller 321, and the other end is connected to the horizontal part; it can be understood that the breaking roller 321 and the heat collecting and air distributing pipe 322 are in communication; the outer wall of the horizontal part extends to form a plurality of hollow short pipes 3221 in communication with the horizontal part, each hollow short pipe 3221 is provided with a second air outlet 3222; the second air outlet 3222 is arranged at an angle to guide the direction of high temperature and high pressure combustion-supporting air to the heat exchange device 5.

[0046] In one embodiment, the combustion chamber 3 is provided with a fire outlet 31 near one side of the water cooling device 4, the water cooling device 4 is provided with a connecting port 41 near one side of the combustion chamber 3, and the fire outlet 31 and the connecting port 41 are connected through a connecting arch 6; wherein the connecting arch 6 is located outside the feed bin 2 for convenient maintenance by workers; the water cooling device 4 includes a connected first water cooling part 42 and a second water cooling part 43, and the water cooling device 4 can be arranged in blocks for convenient transportation and installation.

[0047] In one embodiment, one side of the combustion chamber 3 is also provided with a furnace door 33, which facilitates the maintenance of the combustion chamber 3 by the operating personnel.

[0048] Specifically, the first water cooling part 42 comprises a first drum 421, a first membrane wall pipe group 422, a first downcomer 427, a first header 423, a first membrane wall side pipe group 424, a first upper header 425 and a first lower header 426; one end of the first membrane wall pipe group 422 is communicated with the first drum 421, and the other end is communicated with the first header 423; the first membrane wall pipe group 422 is provided with at least two groups, and each first membrane wall pipe group 422 is arranged at intervals; one end of the first downcomer 427 is communicated with the first drum 421, and the other end is communicated with the first header 423; the first membrane wall side pipe group 424 is arranged on the side of the first membrane wall pipe group 422 close to the combustion chamber 3, and forms a first hearth with the first membrane wall pipe group 422; the top end of the first membrane wall side pipe group 424 is communicated with the first upper header 425, the first upper header 425 is communicated with the first drum 421, the bottom end of the first membrane wall side pipe group 424 is communicated with the first lower header 426, and the first lower header 426 is communicated with the first header 423.

[0049] The second water cooling part 43 comprises a second drum 431, a second membrane wall pipe group 432, a second downcomer 437, a second header 433, a second membrane wall side pipe group 434, a second upper header 435 and a second lower header 436; one end of the second membrane wall pipe group 432 is communicated with the second drum 431, and the other end is communicated with the second header 433; the second membrane wall pipe group 432 is provided with at least two groups, and each second membrane wall pipe group 432 is arranged at intervals; one end of the second downcomer 437 is communicated with the second drum 431, and the other end is communicated with the second header 433; the second membrane wall side pipe group 434 is arranged on the side of the second membrane wall pipe group 432 close to the heat exchange device 5, and forms a second hearth with the second membrane wall pipe group 432; the top end of the second membrane wall side pipe group 434 is communicated with the second upper header 435, the second upper header 435 is communicated with the second drum 431, the bottom end of the second membrane wall side pipe group 434 is communicated with the second lower header 436, and the second lower header 436 is communicated with the second header 433.

[0050] The water cooling device 4 further comprises a first connecting water box 44 and a second connecting water box 45, and the first drum 421 and the second drum 431 are connected through the first connecting water box 44, and the first header 423 and the second header 433 are connected through the second connecting water box 45; it can be understood that the first hearth and the second hearth are communicated, which is beneficial to the full combustion of volatile components and the settlement of large particle smoke dust; the water cooling device 4 is provided with an observation door 46 for observing the fuel combustion condition.

[0051] The height of the first membrane wall side tube group 424 is less than that of the second membrane wall side tube group 434, the first lower header 426 is in a "U" shape and is provided with an opening downward, and the opening is the connecting port 41; the second membrane wall side tube group 434 is provided with a smoke outlet port 4341 connected to the heat exchange device 5.

[0052] In one embodiment, the heat exchange device 5 comprises an inlet smoke box 51, a flow assembly and an outlet smoke box 52, which are sequentially communicated, wherein the flow assembly comprises a first return smoke pipe 53, a second return smoke pipe 54 and a turning smoke chamber 55, one end of the first return smoke pipe 53 is communicated with the inlet smoke box 51, and the other end is communicated with the turning smoke chamber 55; one end of the second return smoke pipe 54 is communicated with the turning smoke chamber 55, and the other end is communicated with the outlet smoke box 52; the first return smoke pipe 53 and the second return smoke pipe 54 increase the travel of the flue gas, so that the flue gas is fully exchanged with the smoke pipe.

[0053] The turning smoke chamber 55 is located at the lower part of the heat exchange device 5, and the turning smoke chamber 55 is provided with a dust removal door 551 for facilitating the workers to clean the dust falling from the smoke pipe; the outlet smoke box 52 is located at the upper part of the heat exchange device 5, which is convenient for connecting other equipment.

[0054] In one embodiment, the bale-straw direct-combustion module fast-assembly boiler is further provided with an overfire fan 7, which is arranged above the first lower header 426 and is spaced apart from the first lower header 426, so as to provide combustion-supporting air for the volatile combustion; the high-temperature flue gas generated by the straw combustion enters the inlet smoke box 51 through the smoke outlet port 4341 of the second water cooling part 43 after being exchanged by the water cooling device 4, and is discharged from the outlet smoke box 52 after being exchanged by the first return smoke pipe 53 and the second return smoke pipe 54.

[0055] The bale-straw combustion process is as follows: the fuel is sent to the feeding port 21 of the stock bin 2 by the feeding device, and after entering the stock bin 2, it naturally falls onto the bale-breaking roller 321 of the bale-breaking device 32 for combustion; the speed reducer drives the bale-breaking roller 321 to rotate, and the hollow spikes 3211 tear the bale-straw, and at the same time, the high-pressure air output by the air blower 324 and the bellows 326 enters the heat-collecting and air-distributing pipe 322, is exchanged to form high-temperature and high-pressure air, and is sprayed out from the first air outlet 3212 and the second air outlet 3222; the high-temperature and high-pressure air sprayed out from the second air outlet 3222 is sprayed onto the bale-straw to cause physical impact and cutting effect, and a local high-temperature environment is created, so that the bale-straw is more easily scattered, and drying and combustion-supporting effects are achieved.

[0056] The ignited straw fuel that is scattered falls again and is combusted by the high-temperature and high-pressure air ejected from the first air outlet 3212, and burns fiercely; the straw fuel that is not combusted after being dried and combusted by high-temperature and high-pressure air twice falls on the grate 1 and continues to burn under the action of the grate air; meanwhile, the concrete of the side wall of the combustion chamber 3 has a heat storage capacity, which provides favorable conditions for creating a continuous high-temperature environment, so that the whole breaking process is always in a high-temperature environment, the breaking difficulty is reduced, and most of the fuel can be consumed, the volatile components and the uncombusted straw fuel separated in this process enter the water cooling device 4 through the connecting arch 6 under the action of the air blower 324 and the grate 1 and continue to burn.

[0057] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A kind of bale straw direct combustion module fast installation boiler, part is set on the grate (1), it is characterized in that, The utility model relates to a water cooling device for a boiler, and relates to the technical field of boilers. The utility model discloses a water cooling device for a boiler, which comprises the following components: A bunker (2); A combustion chamber (3) located below the bunker (2); A water cooling device (4) arranged along the length direction of a grate (1) and connected to the combustion chamber (3); 2. The bundled straw direct combustion module fast-pack boiler according to claim 1, characterized in that, A heat exchange device (5) connected to the water cooling device (4) and located on the side of the water cooling device (4) away from the bunker (2).

3. The bundled straw direct combustion module fast-pack boiler of claim 1, wherein, The combustion chamber (3) is provided with an outlet (31) on the side close to the water cooling device (4), the water cooling device (4) is provided with a connecting port (41) on the side close to the combustion chamber (3), and the outlet (31) and the connecting port (41) are connected through a connecting arch (6) located outside the bunker (2).

4. The bundled straw direct combustion module fast-pack boiler of claim 3, wherein, The water cooling device (4) comprises a first water cooling part (42) and a second water cooling part (43), and the first water cooling part (42) and the second water cooling part (43) are connected.

5. The bundled straw direct combustion module boiler of claim 4, wherein, The first water cooling part (42) comprises a first boiler drum (421), a first membrane wall pipe group (422) and a first header (423); one end of the first membrane wall pipe group (422) is communicated with the first boiler drum (421), and the other end is communicated with the first header (423); the first membrane wall pipe group (422) is provided with at least two groups, and each first membrane wall pipe group (422) is arranged at intervals.

6. The bundled straw direct combustion module boiler of claim 5, wherein, The first water cooling part (42) further comprises a first membrane wall side pipe group (424), a first upper header (425) and a first lower header (426); the first membrane wall side pipe group (424) is arranged on the side of the first membrane wall pipe group (422) close to the combustion chamber (3) and forms a first hearth together with the first membrane wall pipe group (422); the top end of the first membrane wall side pipe group (424) is communicated with the first upper header (425), the first upper header (425) is communicated with the first boiler drum (421), the bottom end of the first membrane wall side pipe group (424) is communicated with the first lower header (426), and the first lower header (426) is communicated with the first header (423). The second water cooling part (43) comprises a second boiler drum (431), a second membrane wall pipe group (432) and a second header (433); one end of the second membrane wall pipe group (432) is communicated with the second boiler drum (431), and the other end is communicated with the second header (433); the second membrane wall pipe group (432) is provided with at least two groups, and each second membrane wall pipe group (432) is arranged at intervals.

7. The bundled straw direct combustion module boiler of claim 6, wherein, The second water cooling part (43) further comprises a second membrane wall side pipe group (434), a second upper header (435) and a second lower header (436); the second membrane wall side pipe group (434) is arranged on the side of the second membrane wall pipe group (432) close to the heat exchange device (5) and forms a second furnace together with the second membrane wall pipe group (432); the top end of the second membrane wall side pipe group (434) is communicated with the second upper header (435), the second upper header (435) is communicated with the second drum (431), the bottom end of the second membrane wall side pipe group (434) is communicated with the second lower header (436), and the second lower header (436) is communicated with the second header (433).

8. The bundled straw direct combustion module boiler of claim 6, wherein, The water cooling device (4) further comprises a first connecting water box (44) and a second connecting water box (45), the first connecting water box (44) is connected to the first drum (421) and the second drum (431), and the second connecting water box (45) is connected to the first header (423) and the second header (433).

9. The bundled straw direct combustion module boiler of claim 7, wherein, The height of the first membrane wall side pipe group (424) is smaller than that of the second membrane wall side pipe group (434), the first lower header (426) is arranged in a "U" shape with the opening downward, the opening is a connecting port (41), and the second membrane wall side pipe group (434) is provided with a smoke outlet (4341).

10. The bundled straw direct combustion module boiler of claim 1, wherein, The combustion cavity (3) is provided with a plurality of bag breaking devices (32), each bag breaking device (32) comprises a bag breaking roller (321) and a heat collecting and air distribution pipe (322), the heat collecting and air distribution pipe (322) comprises a vertical part and a horizontal part, one end of the vertical part is communicated with the bag breaking roller (321), the other end is communicated with the horizontal part, and the horizontal part and the bag breaking roller (321) are arranged in parallel and are spaced apart.

11. The bundled straw direct combustion module boiler of claim 10, wherein, The bag breaking roller (321) is arranged in a hollow manner, a plurality of hollow spikes (3211) are formed on the outer sidewall of the bag breaking roller (321), each hollow spike (3211) is arranged in communication with the bag breaking roller (321), and each hollow spike (3211) is provided with a first air outlet (3212).

12. The bundled straw direct combustion module boiler of claim 10, wherein, The outer sidewall of the horizontal part extends to form a plurality of hollow short pipes (3221), each hollow short pipe (3221) is arranged in communication with the horizontal part, and each hollow short pipe (3221) is provided with a second air outlet (3222).

13. The bundled straw direct combustion module boiler of claim 10, wherein, The bag breaking device (32) further comprises a driving member (323) and a blower (324), the driving member (323) is connected to one end of the bag breaking roller (321) away from the heat collecting and air distribution pipe (322), and the blower (324) is connected to one end of the heat collecting and air distribution pipe (322) away from the bag breaking roller (321).

14. The bundled straw direct combustion module boiler of claim 1, wherein, The heat exchange device (5) is arranged on the ground and comprises an inlet smoke box (51), a flow assembly and an outlet smoke box (52), one end of the flow assembly is connected to the inlet smoke box (51), and the other end is communicated with the outlet smoke box (52); the inlet smoke box (51) is connected to the smoke outlet (4341) of the water cooling device (4).

15. The bundled straw direct combustion module boiler of claim 14, wherein, The flow assembly comprises a first return smoke pipe (53), a second return smoke pipe (54) and a turning smoke chamber (55), one end of the first return smoke pipe (53) is communicated with the inlet smoke box (51), and the other end is communicated with the turning smoke chamber (55); one end of the second return smoke pipe (54) is communicated with the turning smoke chamber (55), and the other end is communicated with the outlet smoke box (52).

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