CN113203201A

CN113203201A - High-efficiency environment-friendly boiler

Info

Publication number: CN113203201A
Application number: CN202110490918.9A
Authority: CN
Inventors: 阮氏秋霞; 林永清; 林庆明
Original assignee: Yongan Fangre Boiler Equipment Co ltd
Current assignee: Yongan Fangre Boiler Equipment Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-08-03

Abstract

The invention discloses a high-efficiency environment-friendly boiler, which comprises a makeup board, heat-insulating cotton, a shell, a boiler heating area, a protective shell, heat-insulating cotton and a boiler body heating area, wherein the boiler heating area is partitioned into a coal stove placing area, a flue gas denitration treatment area and a flue gas heating area which are sequentially communicated with flue gas through a smoke guide hole; a coal stove is placed in the stove placing area, and smoke generated by the coal stove is discharged after sequentially passing through the smoke denitration treatment area and the smoke heating area; the water in the external water tank is discharged after sequentially passing through the U-shaped balance pipe, the water replenishing port, the pot body, the low-temperature heated area, the transition area, the high-temperature heated area and the water outlet. The high-efficiency environment-friendly boiler adopting the structure utilizes the gravity type heat pipe to conduct heat conduction and carry out heat radiation and heat convection in the boiler, heats water flow, improves the heat efficiency, and further improves the heat efficiency by the countercurrent movement between the flue gas and the water flow and the working medium flowing into a turbulent flow state.

Description

High-efficiency environment-friendly boiler

Technical Field

The invention relates to a boiler technology, in particular to a high-efficiency environment-friendly boiler.

Background

China is a big country with a large population and a shortage of resources, and in the development process, most developed countries still go to realize industrialized mode of 'first development and later treatment' at the cost of resource consumption and environment sacrifice. Oil and gas resources are relatively in short supply in China, but coal resources are relatively rich. In the primary energy consumption of China, the proportion of coal is close to 70%, along with the rapid development of economy of China, the shortage of energy and the environmental pollution are becoming serious day by day, the problems of energy and environment are not ignored, and energy conservation and emission reduction become important measures for the development of social economy of China.

The existing boiler mainly comprises a furnace and a circulating water tank, namely a boiler, the water in the circulating water tank, namely the boiler, is directly heated by utilizing the combustion of coal in the furnace, the heat utilization rate is low, and the nitrogen oxides generated by the combustion of the coal in the heating furnace cause severe pollution to the environment.

In the normal operation process of the boiler, water of the boiler is naturally lost, so that the problem of water supplement for the boiler exists, and the automatic water supplement of the large boiler utilizes three impulses to automatically supplement water, so that the equipment is expensive and complex and the like.

If the equipment in the pan is damaged and needs to be disassembled for maintenance, the heat preservation and the removal and the maintenance of the makeup board are needed to destroy the beauty of the equipment.

Disclosure of Invention

The invention aims to provide a high-efficiency environment-friendly boiler, which utilizes a coal furnace to carry out radiation and convection conduction on a bottom plate of a boiler body, and gravity type heat pipes and smoke gas carry out heat convection heat conduction to heat water flow in the boiler body, so that the heat utilization rate is improved, and the flowing state of the smoke gas and working media is turbulent flow through the countercurrent movement between the smoke gas and the water flow, so that the heat utilization rate is further improved. And simultaneously improves the water supply system of the boiler.

In order to achieve the purpose, the invention provides a high-efficiency environment-friendly boiler which comprises a makeup board, heat-preservation cotton, a shell, a boiler heating area arranged in the shell and a boiler body heating area arranged above the boiler heating area, wherein the boiler heating area is internally partitioned into a coal stove placing area, a flue gas denitration treatment area and a flue gas heating area which are sequentially communicated through the flow of flue gas of a smoke guide hole by a plurality of flue gas supporting partition plates, and the boiler body heating area is internally partitioned into a high-temperature heating area, a transition area and a low-temperature heating area which are sequentially communicated through the flow of water of a water flowing hole by a plurality of water side vertical partition plates;

a coal stove is placed in the stove placing area, and smoke generated by the coal stove is discharged after sequentially passing through the smoke denitration treatment area and the smoke heating area;

The denitration refers to a process of removing nitrogen amide by using ammonia water and pressurizing force to atomize through an atomizing nozzle, and carrying out chemical reaction on the atomized ammonia water and the nitrogen amide in the flue gas at 900 ℃;

the second low-temperature heated area is provided with a circulating water inlet and a water replenishing port, the water replenishing port is a vertical hollow steel pipe, one end of the vertical hollow steel pipe penetrates through the protective shell, the heat-preservation cotton pot body bottom plate and the 0-shaped sealing ring to enter the second low-temperature heated area of the pot body, the other end of the vertical hollow steel pipe is provided with an outer tooth to enter the first flue gas heating area, and then the outer tooth penetrates through the shell bottom plate, the heat-preservation cotton, the cosmetic plate and the outer pipe to be connected into a U-shaped water balance pipe to enter the externally hung water tank, and an automatic water inlet device and a tap water source of a floating ball are arranged in the externally hung water tank; the water source enters the external water tank through an automatic water replenishing device switch of the floating ball, the water in the external water tank sequentially passes through the U-shaped balance pipe, the water replenishing port, the pot body, the second low-temperature heated area, the water flowing hole, the inverted L-shaped guide pipe, the first low-temperature heated area, the water flowing hole, the inverted L-shaped guide pipe, the transition area, the water flowing hole, the inverted L-shaped guide pipe and the high-temperature heated area, and the high-temperature heated area is provided with a water outlet, so that the water flow is discharged from the lowest to the highest when flowing in each area and finally is discharged from the water outlet;

The outlet of the flue gas and the inlet of the water are on the same side, the inlet of the flue gas and the outlet of the water are in the same side structure, and the flowing relation between the inlet of the flue gas and the outlet of the water is a counter-flow relation, so that the heat efficiency is higher;

respectively installing a gravity type heat pipe in one of the two areas, namely a secondary high-temperature area, and the other area, namely a low-temperature area, wherein the low-end heat absorption end of the gravity type heat pipe is respectively positioned in the first flue gas heating area and the second flue gas heating area, and the other high-end heat release end of the gravity type heat pipe respectively and correspondingly penetrates through a protective shell, heat insulation cotton, a pot body bottom plate and a 0-shaped sealing ring in sequence to enter the second low-temperature heating area and the first low-temperature heating area of the pot body;

the protective shell comprises a protective shell, heat-insulating cotton, a 0-shaped sealing ring and a pot body bottom plate, and a high-temperature heated area is arranged right above the coal stove; the heat-transfer area of the bottom plate of the boiler right above the coal furnace can be adjusted, namely, the heat transfer quantity is controlled by the area of the covering heat-insulation layer to ensure that the temperature of the outlet flue gas reaches 900 ℃;

the heat-insulating shell is a makeup board of the boiler, the heat-insulating cotton layer is arranged in the heat-insulating shell, the outer shell is arranged in the heat-insulating shell, the heat-insulating shell comprises a shell bottom board and an upward vertical edge fixed on the top edge of the shell bottom board and serves as a lower end shell board, and the vertical edge of the boiler body also serves as an upper end shell board; and between foretell lower extreme housing plate and the upper end housing plate be the middle-end housing plate, shell bottom plate top the shell is inside to have set gradually pot body bottom plate, pot body and hanger plate, and it has one to be able to be for passing the lifting hole of gravity type heat pipe to bore on the hanger plate, and the head that gets rid of bleeding of the tooth outside the gravity type heat pipe top area passes the lifting hole to fix gravity type heat pipe on the hanger plate with front and back nut, the hanger plate supports on the second boss of the horizontal plane that the topside of the vertical baffle of water side is constituteed, and the bottom of gravity type heat pipe is overlapped in the setting element, and the setting element is along with fixing naturally in the fan-shaped wire net of burst formula, and the interior limit of the fixed plate of burst formula wire net is the overlap joint on first boss, pass the shell bottom plate with between the makeup board the top edge circle of internal thread pipe has first boss, and the outside of the fixed plate of burst formula wire net is the step of overlap joint on the ascending vertical limit inner wall of shell bottom plate top edge, the waist at two sides of the plate fixed by the split fan-shaped steel wire mesh is lapped with the step at the inner side of the upper edge at the lower end of the supporting clapboard, and the inner side of the upward vertical edge at the top edge of the shell bottom plate and the vertical edge of the outside angle iron of the plate fixed by the split fan-shaped steel wire mesh are fixed by bolts and nuts; the gravity type heat pipe installation method aims to solve the problem that because the horizontal plane of a pot body bottom plate deforms in the product manufacturing and processing process, and the horizontal change of the pot body bottom plate of each boiler is uncertain, the verticality of the gravity type heat pipe installation is not enough and the change is abnormal, and the factor of the length of the gravity type heat pipe exists, the hole position for fixing the bottom of the gravity type heat pipe cannot be determined, the bottom of the heat pipe is in a free state, and the possibility that the O-shaped sealing position of the pot body bottom plate can leak water is caused. Meanwhile, in the structure, because the middle position of a smoke guide hole at the lower end of a supporting partition plate is the lowest position and is lower than the lowest point of a gravity type heat pipe, the position of a plane plate for fixing the bottom of the heat pipe is higher than the position of the smoke guide hole, smoke is blocked and cannot pass through the smoke guide hole, so that a plate is fixed by using the split type fan-shaped steel wire mesh with the vent holes, on one hand, the bottom of the gravity type heat pipe can be fixed and supported to prevent the bottom plate of the pot body from leaking water, and on the other hand, the bottom plate can also play a role of passing through the smoke, in order to prevent heat insulation cotton from leaking into the pot body through a hanging hole to pollute circulating water, a cover plate with a hole in the center and capable of passing through an external tooth lifting hook is covered on the surface of the hanging plate, the outer layer of the shell bottom plate is the heat insulation cotton, and the cosmetic plate is arranged outside the shell bottom plate;

A complete shell is formed between the two heat-insulating cotton blocks, so that the function of the heat-insulating cotton is well fixed, the heat-insulating cotton is prevented from being extruded into the heat pipe bundle, and the normal flow of smoke is blocked;

a plurality of auxiliary support legs are fixed at the edge position of the end of the cosmetic board, a main support leg is fixed at the center of the cosmetic board, the top end of the main support leg is in threaded connection with the bottom end of the internal thread pipe, the top end of the internal thread pipe sequentially penetrates through the cosmetic board and the shell bottom board and then is in threaded connection with the bottom end of the support rod, the top end of the support rod is in compression joint with the bottom end of the pot body bottom board, one part of the pot body bottom board, namely a low-temperature heated area, is in compression joint with the upper end edge of the upper end partition board of the support partition board through the bottom surface of the heat-insulating cotton protective shell due to the gravity heat pipe, and the upper end edge of the upper end partition board of the other support partition board is in compression joint with the other side bottom end of the pot body bottom board;

the supporting partition plate comprises an upper end partition plate, a middle end partition plate and a lower end partition plate which are sequentially arranged from top to bottom. The inner side of the lower end clapboard is vertically welded with the central position of the internal thread pipe penetrating through the shell bottom plate, the outer side of the lower end clapboard is vertically welded with the inner wall of a vertical edge which is upward from the top edge of the shell bottom plate, the bottom side of the lower end clapboard is horizontally welded with the shell bottom plate, the top side of the lower end clapboard is welded with the bottom side of the middle end clapboard, the outer side of the middle end clapboard is vertically welded with the inner wall of the middle end shell, the inner side of the middle end clapboard is vertically welded with the outer side of the supporting rod, the top side of the middle end clapboard is welded with the bottom side of the upper end clapboard, the inner side of the upper end clapboard is vertically welded with the outer side of the supporting rod, and the outer side of the upper end clapboard is welded with the inner wall of the upper top edge of the middle end shell;

Can assemble lower extreme baffle, middle-end baffle and upper end baffle respectively, then rotate the bracing piece, until align the back, again with between the adjacent baffle welding can, the sectional type structure is convenient for more process and installation.

Preferably, the lower edge of the upper end of the supporting partition board is provided with a smoke guide hole, the smoke guide holes on the next-stage supporting partition board are arranged in a diagonal line, namely the smoke guide holes on the next-stage supporting partition board are arranged in the middle of the lower end of the supporting partition board, and so on, and the smoke guide holes of the last stage are arranged on the position of the shell bottom board and are not arranged on the supporting partition board; the above-mentioned last-stage smoke guide hole, that is, the smoke guide hole on the shell bottom plate position in the first smoke heating zone, is communicated with a smoke outlet pipe for discharging smoke, the smoke outlet pipe is a PVC pipe, which has stronger corrosion resistance compared with the conventional metal pipe PVC pipe, and is matched with a water film type dust remover to facilitate ash removal, but it should be noted that in this embodiment, the arrangement number of gravity type heat pipes in each zone is determined according to the smoke discharge temperature, that is, the heat absorption capacity of the gravity type heat pipes is ensured, so that the smoke discharge temperature is lower than the melting point temperature of the PVC pipe, and the heat absorption capacity is determined according to the area of the bottom plate of the pot body to ensure that the denitration smoke temperature is about 900 ℃.

Preferably, the flue gas outlet of the coal furnace is provided with a flue gas guide hole at the lower edge of the upper end of the supporting baffle plate, the flue gas flows into the flue gas denitration treatment chamber from top to bottom, and the nozzle of the flue gas denitration device is arranged at the top of the flue gas guide hole and sprayed from top to bottom, so that the flue gas and the ammonia water are in downstream contact, and the denitration effect is better.

Preferably, the horizontal plane of the triangular iron is connected into an inner side, an outer side and two waist edges by steel wire mesh crimping, the four sides of the plate are provided with fan-shaped plates with right-angle edges, the plate passes through the shell bottom plate and the cosmetic plate, a circle at the periphery of the top end edge of the internal thread pipe between the shell bottom plate and the cosmetic plate is provided with a first boss, the inner side of the plate is lapped on the first boss, the outer side of the plate is lapped on a step on the inner wall of the upward vertical edge at the top end edge of the shell bottom plate, the waist at two sides of the plate is lapped on the step at the inner side of the upper edge at the lower end of the supporting clapboard, the inner side of the upward vertical edge of the top end of the shell bottom plate and the vertical edge of the angle iron of the plate for fixing the split-type fan-shaped steel wire mesh are fixed by bolts and nuts, the bottom end of the gravity type heat pipe is sleeved in a positioning piece, and the positioning piece is naturally fixed in the grids of the plate for fixing the split-type fan-shaped steel wire mesh;

The positioning piece comprises a positioning sleeve fixed at the bottom end of the gravity type heat pipe, the bottom side of the positioning sleeve is punched and is in clamping connection with a nut at the top end through a bolt, the bottom end of the bolt penetrates through the steel wire mesh grid, and two sides of the steel wire mesh are clamped on the bolt together face to face through the nuts.

Preferably, the positions of the hanging plates corresponding to the gravity type heat pipes one by one are provided with hanging holes, the suction swing heads at the top ends of the gravity type heat pipes are provided with external threads, the suction swing heads at the top ends of the gravity type heat pipes correspondingly penetrate through the hanging holes one by one, and the suction swing heads are respectively locked on the hanging plates by using nuts in tandem, so that the gravity type heat pipes can be reliably fixed up and down;

the lifting device is characterized in that a lifting position is arranged in the geometric center of the lifting plate, and a lifting inner nut used for being matched with the outer tooth lifting hook is fixedly welded on the lifting position, so that the lifting device is convenient to integrally lift and move.

Preferably, the top of the pot body, namely a horizontal plane formed by the top edges of all the water-side vertical partition plates, is a second boss, the top end of the second boss is lapped with the hanging plate, the position of the second boss, corresponding to the positioning hole drilled in the hanging plate, is welded with a positioning bolt, and the bolt penetrates through the positioning hole and is fixed on the second boss by a nut, so that the hanging plate is prevented from moving randomly and is reliably fixed.

Preferably, the gravity type heat pipe penetrates through the pot body bottom plate, an O-shaped sealing ring is fixed at the position, corresponding to the O-shaped sealing ring, of the bottom end of the pot body bottom plate, a protective shell is arranged at the position, filled with heat preservation cotton, of the protective shell and used for protecting the O-shaped sealing ring and preventing the O-shaped sealing ring from being heated and aged, and the protective shell is fixed on the inner wall of the shell and the bottom side of the pot bottom plate through bolts and nuts.

Preferably, the shell is cylindrical, the outer side of the shell is sequentially bonded with heat preservation cotton and a makeup board, and a furnace door is arranged at the position of the shell corresponding to the furnace, so that the coal furnace can conveniently enter and exit.

Preferably, the top end of the water side vertical partition plate in the boiler body is provided with a water flowing hole, and the height of the water flowing hole is gradually reduced along the direction of water flow, so that the stroke of water fluid is increased, and the heat utilization rate is improved;

the water outlet side of the water flowing hole is fixedly provided with a horizontal section of an inverted L-shaped flow guide pipe, and a vertical section of the inverted L-shaped flow guide pipe extends into the bottom of the pot body, namely, water flow is from lowest to highest, and the processes are repeated for multiple times, so that water circulation is more thorough and turbulent, and the defect that only top water circulates is avoided.

Preferably, one end of the high-temperature heated area, which is fixedly provided with a water outlet pipe, is provided with a water outlet and is arranged in the middle of the inside of the pot body, the other end of the water outlet pipe is provided with an outer tooth, the outer tooth penetrates through the O-shaped sealing ring 20 of the bottom plate of the pot body and then penetrates out of the protective shell, the heat insulation cotton is led out from the lowest end of the makeup board of the bottom plate of the shell, and the water outlet pipe is positioned beside the high-temperature heated area and led out;

Therefore, the high-efficiency environment-friendly boiler adopting the structure has the advantages that the flame of the coal stove directly carries out heat radiation, heat conduction and heat convection on the bottom plate of the boiler body, the gravity type heat pipe is used for carrying out waste heat utilization on scorching smoke, the water flow is heated, the heat efficiency is improved, and the heat efficiency is further improved through the counter-current motion between the smoke and the water flow and the working medium turbulent flow state.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic structural diagram of an efficient and environmentally friendly boiler according to an embodiment of the present invention;

FIG. 2 is a schematic view of the protection of a 0-type sealing ring penetrating through a gravity heat pipe and a bottom plate of a boiler body of an efficient and environment-friendly boiler according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating the connection and fixation of the bottom of a gravity type heat pipe and a steel wire mesh of an efficient and environment-friendly boiler according to an embodiment of the present invention.

FIG. 4 is a schematic view showing the installation of a segmented fan-shaped steel wire fixing plate of an efficient and environment-friendly boiler according to an embodiment of the present invention.

Wherein: 1. a housing; 2. a water outlet pipe; 3. a coal stove placement area; 4. an auxiliary leg; 5. a main leg; 6. a flue gas treatment zone; 7. a second flue gas heating zone; 8. a gravity type heat pipe; 9. a smoke guide hole; 10. a first low temperature heated zone; 11. a second boss; 12. a hanger plate; 13. a flow guide pipe; 14. a second low temperature heated zone; 15. a transition zone; 16. a high temperature heated zone; 17. a pan body bottom plate; 18. a housing floor; 19. steel wire mesh; 20. a seal ring; 21. a protective shell; 22. heat preservation cotton; 23. a positioning sleeve; 24. an internally threaded tube; 25. an external water tank; 26. a U-shaped balance tube; 27. a floating ball; 28. a valve core; 29. a water replenishing port; 30. a circulating water inlet; 31. a first flue gas heating zone; 32. a support bar; 33. supporting the partition plate; 34. a first boss; 35. the plate is fixed by the sectional fan-shaped steel wire mesh.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.

FIG. 1 is a schematic structural diagram of an efficient and environmentally friendly boiler according to an embodiment of the present invention; fig. 2 is a schematic diagram illustrating protection of a gravity heat pipe and a pot body bottom plate cross-connected O-shaped sealing ring of an efficient and environment-friendly boiler according to an embodiment of the present invention, fig. 3 is a schematic diagram illustrating the gravity heat pipe bottom and a steel wire mesh cross-connected and fixed of the efficient and environment-friendly boiler according to an embodiment of the present invention, fig. 4 is a schematic diagram illustrating installation of a segmented fan-shaped steel wire fixing plate of the efficient and environment-friendly boiler according to an embodiment of the present invention, as illustrated, the efficient and environment-friendly boiler according to the present invention includes a cosmetic plate, insulation cotton 22, a housing 1, a boiler heating area disposed inside the housing, and a pot body heating area disposed above the boiler heating area, the boiler heating area is partitioned into a coal stove placing area 3, a flue gas denitration processing area 6, and a second flue gas heating area 7 which are sequentially communicated through a smoke guide hole by a plurality of flue gas supporting partitions, and the first flue gas heating area 31 is a flue gas heating area, and the flue gas processor is a denitration device uses ammonia water to generate chemical reverse reaction by a pressurizing device to generate ammonia water mist and nitrogen oxides in the ammonia water and the nitrogen oxides in the flue gas Accordingly, nitrogen oxides in flue gas are removed, the first flue gas heating zone 31 in the boiler body heating zone corresponding to the coal furnace placing zone 3, the flue gas denitration treatment zone 6 and the second flue gas heating zone 7 is divided into a high-temperature heating zone 16, a transition zone 15, a first low-temperature heating zone 10 and a second low-temperature heating zone 14 which are sequentially communicated with water through a plurality of water side vertical partition plates by virtue of water flowing holes, and a horizontal plane 12 formed by the top edges of all the water side vertical partition plates is a second boss 11;

A coal stove is placed in the stove placing area, smoke generated by the coal stove passes through the smoke guide hole, the smoke denitration treatment area 6 and the third smoke heating area 7 in sequence, and is discharged after passing through the first smoke heating area 31;

The gravity type heat pipe 8 is respectively arranged in two areas, one area is a sub-high temperature area, the other area is a low temperature area, the low end heat absorption end of the gravity type heat pipe 8 is respectively positioned in the first smoke heating area 31 and the second smoke heating area 7, the other high end heat release end respectively and correspondingly penetrates into the protective shell 21, the heat insulation cotton 22 and the pot body bottom plate 17 of the sealing ring 20 to the second low temperature heating area 14 and the first low temperature heating area 10 in sequence, the gravity type heat pipe 8 absorbs waste heat in the smoke heating areas, then the medium is vaporized and ascends to the heat release end, after releasing heat in the low temperature heating area, the medium is liquefied and returns to the low end heat absorption end under the action of the gravity field to circulate, and water in the low temperature heating area can be heated after absorbing the heat, so that the waste heat of smoke is fully utilized;

the protective shell 21 comprises a protective shell 21 heat insulation cotton 22, a 0-shaped sealing ring 20 and a pot body bottom plate 17, and a high-temperature heated area is arranged right above the coal stove; the heat-transfer area of the bottom plate of the boiler right above the coal furnace can be adjusted, namely, the heat transfer quantity is controlled by the area of the covering heat-insulation layer to ensure that the temperature of the outlet flue gas reaches 900 ℃;

The heat preservation shell is a makeup board of the boiler, the heat preservation cotton 22 layers are arranged in the heat preservation shell, the shell 1 is arranged in the heat preservation shell, the heat preservation shell comprises a shell bottom plate 18 and a vertical edge which is fixed on the top edge of the shell bottom plate 18 and faces upwards and serves as a lower end shell plate, and the vertical edge of the boiler body serves as an upper end shell plate; and the middle end shell plate is arranged between the lower end shell plate and the upper end shell plate, a pot body bottom plate 17, a pot body and a hanging plate 12 are sequentially arranged in the shell 1 above the shell bottom plate 18, hanging holes capable of penetrating through the gravity type heat pipes 8 in a one-to-one correspondence mode are drilled in the hanging plate 12, in order to prevent the upper heat-preservation cotton 22 from leaking into the pot body through the hanging holes to pollute circulating water, a cover plate with a hole in the center and capable of penetrating through an outer tooth lifting hook is further covered on the surface of the hanging plate 12, the heat-preservation cotton 22 is arranged on the outer layer of the shell bottom plate 18, and a cosmetic plate is arranged outside the shell;

a complete shell is formed between the two, which aims to fix the function of the heat insulation cotton 22 and ensure that the heat insulation cotton 22 is not extruded into the heat pipe bundle to block the normal flow of the smoke;

a plurality of auxiliary support legs 4 are fixed at the edge position of the end of the makeup board, a main support leg 5 is fixed at the center of the makeup board, the top end of the main support leg 5 is in threaded connection with the bottom end of the internal thread pipe 24, the top end of the internal thread pipe 24 sequentially penetrates through the makeup board and the shell bottom plate 18 and then is in threaded connection with the bottom end of the support rod 32, the top end of the support rod 32 is in compression joint with the bottom end of the pot body bottom plate 17, one part of the pot body bottom plate 17, namely a low-temperature heated area, is in compression joint with the upper end edge of the upper end partition plate of the support partition plate 33 through the bottom surface of the protective shell 21 containing the gravity heat pipe 8 of the heat insulation cotton 22, and the upper end edge of the upper end partition plate 33 of the other support partition plate is in compression joint with the bottom end of the other side of the pot body bottom plate 17;

The supporting clapboard 33 comprises an upper end clapboard, a middle end clapboard and a lower end clapboard which are arranged from top to bottom in sequence, the inner side of the lower end clapboard is vertically welded with the center of the internal thread pipe 24 which penetrates out of the shell bottom plate 18, the outer side of the lower end clapboard is vertically welded with the inner wall of the upward vertical edge at the top end edge of the shell bottom plate, the bottom side of the lower end clapboard is horizontally welded with the shell bottom plate 18, the top side of the lower end clapboard is welded with the bottom side of the middle end clapboard, the outer side edge of the middle end clapboard is vertically welded with the inner wall of the middle end shell, the inner side edge of the middle end clapboard is vertically welded with the outer side of the supporting rod 32, the top side edge of the middle partition plate is welded with the bottom side edge of the upper partition plate, the inner side edge of the upper partition plate is vertically welded with the outer side of the support rod 32, and the outer side edge of the upper partition plate is welded with the inner wall of the upper top edge of the middle end shell;

can assemble lower extreme baffle, middle-end baffle and upper end baffle respectively, then rotate bracing piece 32, until the alignment back, again with between the adjacent baffle welding can, the sectional type structure is convenient for more process and installation.

The lower edge of the upper end of the supporting partition plate 33 is provided with a smoke guide hole 9, the smoke guide holes 9 on the supporting partition plate 33 of the next stage are arranged in a diagonal line, namely, the smoke guide holes 9 on the supporting partition plate 33 of the next stage are arranged in the middle of the lower end of the supporting partition plate 33, the smoke guide holes 9 of the next stage return to the lower edge of the upper end, and so on, and the last stage is arranged on the position of the shell bottom plate 18.

The smoke guide hole 9 on the shell bottom plate 18 in the first smoke heating zone 31 is communicated with a smoke outlet pipe for discharging smoke, and the smoke outlet pipe is a PVC pipe.

Preferably, the plate 35 is fixed by a fan-shaped steel wire mesh in a piece-separating manner, and is characterized in that the steel wire mesh is connected with the horizontal plane of a triangular iron in a crimping manner to form the fan-shaped plate with the inner edge, the outer edge, two waist edges and four edges all provided with right-angle edges. Simultaneously structurally because some flue gas smoke guide holes are the lowest position in the intermediate position of the lower end of the supporting partition plate 33, the lowest point of the gravity type heat pipe is still low, the position of the plane plate at the bottom of the fixed heat pipe is still higher than the position of the flue gas smoke guide hole 9, the flue gas is blocked and cannot pass through, so the fan-shaped steel wire mesh fixed disk 35 with the vent holes is needed, on the one hand, the bottom of the gravity type heat pipe can be fixed and supported, and the effect of passing through the flue gas can also be played while the occurrence of water leakage of the bottom plate of the pot body is prevented.

A first boss 34 is formed around the top edge of the internally threaded tube 24 between the housing bottom plate 18 and the cosmetic plate. The inner edge of the split type fan-shaped steel wire mesh fixing plate 35 is lapped on the first boss 34, the outer edge of the fan-shaped steel wire mesh fixing plate 35 is lapped on a step on the inner wall of the upward vertical edge of the top edge of the shell bottom plate, the waist of two sides of the split type fan-shaped steel wire mesh fixing plate 35 is lapped on the step on the inner side of the upper edge of the lower end of the supporting partition plate 33, the inner side of the upward vertical edge of the top edge of the shell bottom plate and the vertical edge of the angle iron of the split type fan-shaped steel wire mesh fixing plate 35 are fixed through bolts and nuts, the bottom end of the gravity type heat pipe is sleeved in a positioning piece, and the positioning piece is fixed in the grid of the split type fan-shaped steel wire mesh fixing plate 35;

the positioning piece comprises a positioning sleeve 23 fixed at the bottom end of the gravity type heat pipe 8, the bottom side of the positioning sleeve 23 is punched and is connected with the positioning sleeve in a clamping mode through a bolt and a nut in the top end, the bottom end of the bolt penetrates through 19 meshes of the steel wire gauze, and two sides of the steel wire gauze 19 are clamped on the bolt together through nuts.

The lifting plate 12 is provided with lifting holes corresponding to the positions of the gravity type heat pipes 8, the air-extracting flail head at the top ends of the gravity type heat pipes 8 is provided with external threads, the air-extracting flail head at the top ends of the gravity type heat pipes 8 penetrates through the lifting holes, the gravity type heat pipes 8 are tightly locked on the lifting plate 12 by using a nut inside and outside the air-extracting flail head respectively, and the gravity type heat pipes 8 can be reliably fixed up and down;

The geometric center of the hanging plate 12 is provided with a hoisting position, and a hoisting inner nut used for matching with the outer tooth lifting hook is fixedly welded on the hoisting position, so that the whole hoisting movement is facilitated.

The horizontal plane that the vertical baffle's of all waterside tops of pot body top promptly topside is formed is

second boss

11, 11 top overlap joints of second boss have hanger plate 12, hanger plate 12 bores and has the locating hole to correspond the position welding of second boss 11 has positioning bolt, and the bolt passes behind the locating hole will with the nut hanger plate 12 is fixed on second boss 11, avoids hanger plate 12 to remove at will and realizes reliable positioning.

The gravity type heat pipe 8 penetrates through the pot body bottom plate 17, an O-shaped sealing ring 20 is fixed at the position, corresponding to the O-shaped sealing ring 20, of the bottom end of the pot body bottom plate 17, a protective shell 21 is arranged at the position, corresponding to the O-shaped sealing ring 20, of the bottom end of the pot body bottom plate, and heat preservation cotton 22 is filled in the protective shell 21. The protective shell 21 is fixed on the inner wall of the shell 1 and the bottom side of the pan bottom plate through bolts and nuts.

The shape of the shell 1 is a cylinder, the outer side of the shell 1 is sequentially bonded with heat preservation cotton 22 and a makeup board, and the position of the shell 1 corresponding to the stove is provided with a stove door which is convenient for the coal stove to go in and out.

The top end of the water side vertical partition plate in the boiler body is provided with a water flowing hole, and the height of the water flowing hole is gradually reduced along the direction of water flow, so that the stroke of a drainage body is increased, and the heat utilization rate is improved;

the water outlet side of the water flowing hole is fixed with a horizontal section of an inverted L-shaped flow guide pipe 13 inwards in the direction of the next stage, and a vertical section of the inverted L-shaped flow guide pipe 13 extends into the next stage to the bottom of the heated area of the pot body, namely, water flow is from lowest to highest, and the processes are repeated for many times, so that water circulation is more thorough and more turbulent, and the defect that only top water circulates is avoided.

A water outlet is formed in one end, fixed with a water outlet pipe 2, of the high-temperature heated area 16, the water outlet is arranged in the middle of the pot body, the other end of the water outlet pipe 2 with external teeth penetrates through an O-shaped sealing ring 20 of the pot body bottom plate 17 and then penetrates out of the protective shell 21, heat insulation cotton 22 is led out from the lowest end of a makeup board of the shell bottom plate 18, and the water outlet pipe is led out beside the high-temperature heated area 16;

the upper part of the coal furnace is opposite to the high-temperature heated area 16; and is not covered by the protective shell 21 and the heat insulation cotton 22;

the working process is as follows: opening a furnace door to ignite coal in a coal firing furnace, directly heating water in a high-temperature heated area in a pot body by utilizing heat conduction and heat radiation heat convection, controlling the heat transfer area of the high-temperature heated area by utilizing the area of a covering heat preservation layer, namely controlling the heat transfer quantity, ensuring that the temperature of outlet flue gas generated by the coal firing furnace is 900 ℃ (the temperature of the flue gas generated by the embodiment is not lower than 900 ℃, the temperature is the optimal temperature for denitration), leading the flue gas to enter a flue gas denitration treatment area 6 along a flue gas guide hole 9 at the upper end of a flue gas side supporting clapboard 33, leading a nozzle of a flue gas denitration device to be arranged at the top of a flow guide hole from top to bottom to remove nitrogen oxides in the flue gas, then leading the flue gas to continuously advance to enter a second flue gas heating area 7 through a flue gas guide hole 9 at the lower end of a next stage supporting clapboard 33, then to enter a first flue gas heating area 31 through the flue gas guide hole 9 at the upper end of the supporting clapboard 33, and finally discharging the flue gas through a smoke discharge pipe, the gravity type heat pipe 8 in the smoke heat release area absorbs waste heat in smoke, a medium at the bottom of the gravity type heat pipe 8 is heated, evaporated and ascends to the top, cold water enters the second low-temperature heated area 14 through a water replenishing port 29 or a circulating water return port firstly and then enters the first low-temperature heated area 10, the temperature in the low-temperature heated area is low, the medium at the top of the gravity type heat pipe 8 is condensed and releases heat, the medium is changed into liquid and flows back to the bottom to absorb heat again so as to circulate, water in the low-temperature heated area continuously absorbs heat to preheat, the preheated water enters the high-temperature heated area 16 through the transition area 15 to continuously absorb heat released by combustion of a coal furnace and then is discharged through a water outlet, so that the heat absorption of water and the heat release of smoke are completed, the flow direction of the water is opposite to that of the smoke is opposite to the flow direction, the outlet of the smoke is on the same side as the inlet of the water; therefore, the utilization rate of the heat generated by heating the water by utilizing the countercurrent is higher.

In the normal operation process of the boiler, water of the boiler is naturally lost, so that the problem of supplementing water for the boiler exists, the automatic water supplementing of the large boiler utilizes three impulses to automatically supplement water, but the equipment is expensive and complex and the like, moreover, the boiler of the invention is characterized in that the heating furnace can not be too small, and the investment cost can not be borne at all, the invention is limited by the structure of the pot body (containing a large number of heat pipes), the automatic water replenishing device of the boiler is invented by the patent technology, the automatic water replenishing device which is originally required to be arranged in the pot body is moved into the external water tank 25 outside by utilizing the principle of a communicating vessel, on one hand, the water volume of the pot body is enlarged, on the other hand, the problem that the automatic water replenishing device is arranged in the pot body without space is solved, on the other hand, the three aspects are convenient to maintain, the investment cost is reduced, and if the equipment in the pot is damaged and the equipment needs to be maintained, the heat preservation and the cosmetic board are removed and repaired, and the attractiveness of the equipment is damaged. A heat pipe is replaced by a vertical steel pipe in the second low-temperature heated area 14, namely the steel pipe passes through a pot body bottom plate 17 and a 0-shaped sealing ring 20 protection shell 21 insulation cotton 22, enters a first smoke heating area 31, then downwards passes through a shell bottom plate insulation layer and a cosmetic plate, and is connected with an outer pipe from the lowest end of the furnace to form a U-shaped balance pipe 26, and enters an externally-hung water tank 25 containing a floating ball 27 water inlet switch, and the externally-hung water tank 25 is connected with the pot body to form a communicating device.

Because the pot body and the external water tank are connected through the U-shaped balance pipe to form a communicating vessel, when the water level in the pot body is reduced, the water level in the pot body is the same as that of the external water tank 25 under the action of the U-shaped balance pipe 26, the floating ball 27 in the external water tank 25 is reduced along with the reduction of the water level, the valve core 28 connected with the other end of the floating ball 27 moves upwards under the action of the lever to be opened, tap water is supplemented into the external water tank 25 and enters the pot body through the U-shaped pipe, when the water level of the pot body rises, the floating ball 27 floats along with the water, the valve core 28 at the other end moves downwards under the action of the lever to finally block the tap water to cut off the water source, and the effect of automatically adjusting the water level in the pot body is really realized to ensure that the boiler is not burnt out due to water shortage.

When the boiler normally operates, the hot water discharged after absorbing heat in the high-temperature heated area 16 is connected with the circulating water pipe with the water circulating pump and the radiator in a watertight manner, the water circulating pump is started to circulate the high-temperature hot water to radiate the absorbed heat through the radiator, so that the low-temperature water enters the circulating water inlet 30 at the top of the boiler body through the circulating water pump and then enters the boiler body, and the low-temperature water is circulated and recycled in the same way.

Therefore, the high-efficiency environment-friendly boiler adopting the structure utilizes the gravity type heat pipe to carry out heat exchange to reduce the temperature of the flue gas, fully utilizes the waste heat of the flue gas to heat water in a low-temperature heated area, carries out heat radiation in coal stove combustion and carries out heat convection on the flue gas, heats high-temperature water flow in a high-temperature area of the boiler body, improves the heat utilization rate, and further improves the heat utilization rate through reverse flow and fluid turbulence between the flue gas and the water flow.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.

Claims

1. An efficient environment-friendly boiler is characterized in that: the multifunctional cosmetic pot comprises a cosmetic board, heat insulation cotton, a shell, a furnace heating area arranged in the shell and a pot body heating area arranged above the furnace heating area, wherein the furnace heating area is partitioned into a coal furnace placing area, a smoke denitration treatment area and a smoke heating area which are sequentially communicated through a plurality of smoke supporting partition plates, and the pot body heating area is partitioned into a high-temperature heating area, a transition area and a low-temperature heating area which are sequentially communicated through a plurality of water-side vertical partition plates, wherein the coal furnace placing area, the smoke denitration treatment area and the smoke heating area are correspondingly arranged in the pot body heating area;

a coal stove is placed in the stove placing area, and smoke generated by the coal stove is discharged after passing through the smoke guide hole and sequentially passing through the upper nozzle atomized smoke denitration treatment area and the smoke heating area;

respectively installing a gravity type heat pipe in one of the two areas, namely a sub-high temperature area, and the other area, namely a low temperature area, wherein the low-end heat absorption end of the gravity type heat pipe is respectively positioned in the second flue gas heating area and the first flue gas heating area, and the other high-end heat release end of the gravity type heat pipe penetrates through a pot body bottom plate and a 0-shaped sealing ring and respectively and correspondingly enters the first low-temperature heating area and the second low-temperature heating area of the pot body;

the protective shell comprises a protective shell, heat insulation cotton, a 0-shaped sealing ring and a pot body bottom plate; the upper part of the coal furnace is opposite to the high-temperature heated area; and is not covered by a protective shell and heat insulation cotton, can directly receive the heat radiation, heat convection and heat conduction of the coal stove, but in order to ensure that the temperature of the outlet flue gas reaches the requirement of 900 ℃, if the heat transfer area of the pot bottom plate right above the coal stove can be adjusted, namely the purpose of controlling the heat transfer quantity by using the area of the covered heat insulation layer to ensure that the temperature of the outlet flue gas reaches 900 ℃,

the heat-insulating shell is a makeup board of the boiler, the heat-insulating cotton layer is arranged in the heat-insulating shell, the outer shell is arranged in the heat-insulating shell, the heat-insulating shell comprises a shell bottom board and an upward vertical edge fixed on the top edge of the shell bottom board and serves as a lower end shell board, and the vertical edge of the boiler body also serves as an upper end shell board; and foretell between lower extreme housing plate and the upper end housing plate be the middle-end housing plate, shell bottom plate top inside pot body bottom plate, pot body and hanger plate of having set gradually of shell, bore the hanging hole that can have the one-to-one for passing gravity type heat pipe on the hanger plate, the head that gets rid of bleeding of the tooth is taken outside the gravity heat pipe top passes the hanging hole to fix gravity type heat pipe on the hanger plate with front and back nut, the hanger plate supports on the second boss of the horizontal plane that the topside of the vertical baffle of water side is constituteed, the bottom of gravity type heat pipe is overlapped in the setting element, the setting element is along with fixing naturally in the net of the fixed plate of the fan-shaped wire net of burst formula, the interior limit of the fixed plate of fan-shaped wire net of burst formula is the overlap joint on first boss, pass the shell bottom plate with between the makeup board the top edge circle of internal thread pipe has first boss, the outside of the fixed plate of fan-shaped wire net of burst formula is the overlap joint on the step on the ascending vertical inner wall of shell bottom plate top edge The waist at two sides of the plate fixed by the split fan-shaped steel wire mesh is lapped with the step at the inner side of the upper edge at the lower end of the supporting clapboard, and the inner side of the upward vertical edge at the top edge of the shell bottom plate and the vertical edge of the outside angle iron of the plate fixed by the split fan-shaped steel wire mesh are fixed by bolts and nuts; the gravity type heat pipe installation method aims to solve the problem that due to the fact that the horizontal plane of a pot body bottom plate deforms in the product manufacturing and processing process, the horizontal change of the pot body bottom plate of each boiler is uncertain, the verticality of the gravity type heat pipe installation is not enough and changes abnormally, factors of the length of the gravity type heat pipe exist, the hole position of the bottom fixing of the gravity type heat pipe cannot be determined finally, the bottom of the heat pipe is in a free state, and the possibility that water leakage occurs at the O-shaped sealing position of the pot body bottom plate is caused. Meanwhile, in the structure, because the middle position of a smoke guide hole at the lower end of a supporting partition plate is the lowest position and is lower than the lowest point of a gravity type heat pipe, the position of a plane plate for fixing the bottom of the heat pipe is higher than the position of the smoke guide hole, smoke is blocked and cannot pass through the smoke guide hole, so that a plate is fixed by using the split type fan-shaped steel wire mesh with the vent holes, on one hand, the bottom of the gravity type heat pipe can be fixed and supported to prevent the bottom plate of the pot body from leaking water, and on the other hand, the bottom plate can also play a role of passing through the smoke, in order to prevent heat insulation cotton from leaking into the pot body through a hanging hole to pollute circulating water, a cover plate with a hole in the center and capable of passing through an external tooth lifting hook is covered on the surface of the hanging plate, the outer layer of the shell bottom plate is the heat insulation cotton, and the cosmetic plate is arranged outside the shell bottom plate;

a plurality of auxiliary support legs are fixed at the edge position of the end of the cosmetic board, a main support leg is fixed at the center of the cosmetic board, the top end of the main support leg is in threaded connection with the bottom end of the internal thread pipe, the top end of the internal thread pipe sequentially penetrates through the cosmetic board and the shell bottom board and then is in threaded connection with the bottom end of the support rod, the top end of the support rod is in compression joint with the bottom end of the pot body bottom board, the other part of the pot body bottom board, namely a low-temperature heated area, is in compression joint with the upper end edge of the upper end partition board of the support partition board through the bottom surface of the heat-insulating cotton protective shell due to the gravity heat pipe, and the upper end edge of;

the supporting partition plate comprises an upper end partition plate, a middle end partition plate and a lower end partition plate which are sequentially arranged from top to bottom, the inner side edge of the lower end partition plate is vertically welded with the central position of the shell bottom plate through which the internal thread pipe penetrates, the outer side of the lower end partition plate is vertically welded with the inner wall of the vertical side lower end shell plate with the edge of the top end of the shell bottom plate upward, the bottom side of the lower end partition plate is horizontally welded with the shell bottom plate, the top side edge of the lower end partition plate is welded with the bottom side edge of the middle end partition plate, the outer side edge of the middle end partition plate is vertically welded with the inner wall of the middle end shell, the inner side edge of the middle end partition plate is vertically welded with the outer side of the supporting rod, the top side edge of the middle end partition plate is welded with the bottom side edge of the upper end partition plate, the inner side edge of the upper end partition plate is vertically welded with the outer side of the supporting rod, and the outer side edge of the upper top side of the middle end shell is welded with the inner wall;

2. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: the lower edge of the upper end of the supporting partition board is provided with smoke guide holes, the smoke guide holes on the supporting partition board of the next stage are arranged in a diagonal line mode, namely the smoke guide holes on the supporting partition board of the next stage are arranged in the middle of the lower end of the supporting partition board, and the rest is done by analogy, and the last stage is arranged at the position of the shell bottom board.

3. An efficient and environment-friendly boiler as claimed in claim 2, wherein: the flue gas outlet of the coal furnace is provided with a flow guide hole at the lower edge of the upper end of the supporting clapboard, the flue gas flows into the flue gas treatment chamber from top to bottom, and the nozzle of the flue gas denitration device is arranged on the top of the flow guide hole and sprayed from top to bottom, so that the flue gas and the ammonia water are in downstream contact, and the denitration effect is more sufficient.

4. The high efficiency and environment friendly boiler as claimed in claim 2, wherein: the smoke guide hole on the shell bottom plate position in the first smoke heating area is communicated with a smoke outlet pipe used for discharging smoke, and the smoke outlet pipe is a PVC pipe.

5. The high efficiency and environment friendly boiler as claimed in claim 1, wherein:

the horizontal plane of the triangular iron is connected into a fan-shaped plate with an inner edge, an outer edge, two waist edges and four edges all provided with right-angle edges by using steel wire meshes in a pressing mode, the fan-shaped plate penetrates through the shell bottom plate and the cosmetic board, a circle at the periphery of the top end edge of the internal thread pipe between the internal thread pipe is provided with a first boss, the inner edge of the plate fixed by the fan-shaped steel wire meshes is lapped on the first boss, the outer edge of the plate fixed by the fan-shaped steel wire meshes is lapped on a step on the upward vertical edge inner wall at the top end edge of the shell bottom plate, the waist at two sides of the plate fixed by the fan-shaped steel wire meshes is lapped on the step on the inner side of the upper edge at the lower end of the supporting partition plate, the inner side of the upward vertical edge of the top end of the shell bottom plate and the vertical edge of the angle iron of the split-type fan-shaped steel wire mesh fixing plate are fixed well by bolts and nuts, the bottom end of the gravity type heat pipe is sleeved in a positioning piece, and the positioning piece is naturally fixed in the split-type fan-shaped steel wire mesh;

the positioning piece comprises a positioning sleeve fixed at the bottom end of the gravity type heat pipe, the bottom side of the positioning sleeve is punched and is in clamping connection with a nut at the top end through a bolt, the bottom end of the bolt penetrates through the steel wire mesh grid, and two sides of the steel wire mesh are clamped on the two nuts face to face through the nuts.

6. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: the gravity type heat pipes are tightly locked on the hanging plate by using nuts in tandem on the air extraction swinging heads, and the gravity type heat pipes can be reliably fixed up and down;

7. The high efficiency and environment friendly boiler as claimed in claim 6, wherein: the horizontal plane that the vertical baffle's of all waterside tops of pot body top was constituteed is the second boss, second boss top overlap joint has the hanger plate, the hanger plate bores and has the locating hole to correspond the position welding of second boss has positioning bolt, and the bolt passes behind the locating hole will with the nut the hanger plate is fixed on the second boss, avoids the hanger plate to remove at will and realizes reliable positioning.

8. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: the gravity type heat pipe penetrates through the position of the pot body bottom plate and is fixedly provided with an O-shaped sealing ring, the bottom end of the pot body bottom plate corresponds to the position of the O-shaped sealing ring and is provided with a protective shell, heat insulation cotton is filled in the protective shell and is used for protecting the 0-shaped sealing ring and avoiding the 0-shaped sealing ring from being heated and aged, and the protective shell is fixed on the inner wall of the shell and the bottom side of the pot bottom plate through bolts and nuts.

9. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: the shell is cylindrical, the outer side of the shell is sequentially bonded with heat preservation cotton and a makeup board, and a furnace door is arranged at the position of the shell corresponding to the furnace, so that the coal furnace can conveniently enter and exit.

10. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: the top end of the vertical partition plate at the water side in the boiler body is provided with a flow guide hole, and the height of the flow guide hole is gradually reduced along the direction of water flow, so that the stroke of a flow guide body is increased, and the heat utilization rate is improved;

the water outlet side of the diversion hole is fixedly provided with a horizontal section of an inverted L-shaped diversion pipe, and a vertical section of the inverted L-shaped diversion pipe extends into the bottom of the heated area of the pot body, namely the water flow is repeated for a plurality of times from lowest to highest, so that the water circulation is more thorough and turbulent, and the defect that only top water circulates is avoided.

11. The high efficiency and environment friendly boiler as claimed in claim 1, wherein: one end of a water outlet pipe is fixed in the high-temperature heated area, a water outlet is formed in the middle of the pot body, the other end of the water outlet pipe is provided with an outer tooth, the outer tooth penetrates through an O-shaped sealing ring of the pot body bottom plate and then penetrates out of the protective shell, and the heat-preservation cotton is led out from the lowest end of the heat-preservation cotton makeup plate of the shell bottom plate; the water outlet pipe is led out beside the high-temperature heated area.