Efficient and energy-saving boiler device

Abstract

The invention provides an efficient and energy-saving boiler device, and relates to the technical field of boilers, the efficient and energy-saving boiler device comprises a boiler body and a recycling and preheating structure connected with the boiler body and used for recycling flue gas heat and preheating inlet water; the heat energy recovery structure is connected with the boiler body and is used for recovering flue gas heat and carrying out auxiliary heating on air; the filtering structure is arranged on the recycling preheating assembly and the heat energy recycling assembly and used for filtering the output flue gas; the heat preservation structure is arranged on the heat energy recovery assembly and used for conducting heat preservation on smoke in the heat energy recovery assembly and preventing heat dissipation; and the control unit is electrically connected with the boiler body, the recycling preheating assembly and the heat energy recycling assembly and used for controlling start-stop cooperation among all the assemblies. According to the efficient energy-saving boiler device, the purpose of utilizing waste heat of high-temperature flue gas can be achieved, waste of resources is avoided, energy consumption of the boiler device can be reduced, and the requirements for energy conservation and environmental protection are met.

Description

Technical Field

[0001] The invention relates to the technical field of boilers, in particular to a high-efficiency and energy-saving boiler device. Background Art

[0002] A boiler is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam. The boiler consists of two major parts: a pot and a furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. A boiler that provides hot water is called a hot water boiler, which is mainly used for life and also has a small number of applications in industrial production. A boiler that generates steam is called a steam boiler, often referred to as a boiler, and is mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises.

[0003] The energy input to the boiler is in the form of chemical energy in the fuel, electrical energy, thermal energy of high-temperature flue gas, etc., and after conversion by the boiler, steam, high-temperature water or organic heat carrier with a certain amount of thermal energy is output. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives, or it can be converted into mechanical energy through a steam power device, or the mechanical energy can be converted into electrical energy through a generator. A gas boiler refers to a boiler whose fuel is gas. Gas boilers include gas-fired water boilers, gas-fired hot water boilers, gas-fired steam boilers, etc. Waste heat refers to heat energy that can be used but is not used. Waste heat recovery is to recycle the wasted heat energy, improve energy utilization, reduce production costs, and protect the environment.

[0004] In recent years, due to energy shortages and with the further development of energy-saving work, various new energy-saving advanced furnace types have become increasingly perfect. The use of advanced combustion devices has enhanced combustion and reduced incomplete combustion. However, the technology for reducing exhaust heat loss and recovering flue gas waste heat is still not progressing fast. During the operation of existing boilers, most of the flue gas generated is discharged through the chimney, resulting in a large amount of heat energy being discharged, causing the boiler efficiency to be greatly reduced. The waste heat in the high-temperature flue gas cannot be recovered and utilized, resulting in a waste of resources and an increase in the boiler's electricity consumption, which does not meet the requirements of energy conservation and environmental protection. Summary of the invention

[0005] The present invention provides an energy-efficient boiler device, which is used to solve the problem that during the operation of the existing boiler, most of the flue gas generated is discharged through the chimney, resulting in a large amount of heat energy being discharged, causing the boiler efficiency to be greatly reduced, and the waste heat in the high-temperature flue gas cannot be recovered and utilized, resulting in a waste of resources and an increase in the electricity consumption of the boiler.

[0006] In order to solve the above technical problems, the present invention discloses a high-efficiency and energy-saving boiler device, comprising:

[0007] The boiler body has support legs at the bottom, which are fixed at the bottom of the boiler body and are cylindrical in shape, with four support legs respectively located at the four corners of the boiler body;

[0008] A recovery and preheating structure, connected to the boiler body, for recovering flue gas heat and preheating incoming water;

[0009] A heat recovery structure is connected to the boiler body and is used to recover the heat of the flue gas and return the heat to the boiler body to assist in heating the air;

[0010] A filtering structure is provided on the recovery preheating component and the heat recovery component, and is used to filter the output flue gas to prevent dust and other impurities in the flue gas from being blocked by the recovery preheating component and the heat recovery component after a long period of circulation;

[0011] The heat preservation structure is arranged on the heat recovery component and is used to keep the flue gas in the heat recovery component warm to prevent the heat from dissipating and affecting the heat recovery efficiency;

[0012] The control unit is electrically connected to the boiler body, the recovery and preheating component and the heat energy recovery component, and is used to control the start and stop coordination between the various components.

[0013] Preferably, in the above-mentioned high-efficiency energy-saving boiler device, the boiler body comprises:

[0014] The furnace shell has a smoke exhaust port at the top;

[0015] A water tank is disposed in the furnace shell and fixedly connected to the inner wall of the furnace shell, and the water tank is an annular structure;

[0016] A water-cooled wall is arranged on the furnace shell and on the lower side of the water tank;

[0017] A circulation pipe is arranged in the annular structure of the water tank and is fixedly connected to the outer wall of the water tank; the circulation pipe is a spiral structure;

[0018] A smoke pipe is arranged at the smoke exhaust port of the furnace shell, is fixedly connected to the furnace shell, and is communicated with the flow pipe. The smoke passes through the flow pipe and enters the smoke pipe for discharge;

[0019] The combustion equipment is arranged in the furnace shell and fixedly connected to the inner wall of the furnace shell for heating the air in the furnace. The bottom space of the combustion equipment forms an ash cavity.

[0020] Preferably, in the above-mentioned high-efficiency and energy-saving boiler device, a water supply pipe is provided on one side of the water tank, a water supply valve is provided on the water supply pipe, one end of the water supply pipe passes through the side wall of the furnace body shell and the side wall of the water tank, and is connected with the interior of the water tank; a water outlet pipe is provided on the other side of the water tank, one end of the water outlet pipe is connected to the water use end, and the other end passes through the side wall of the furnace body shell and the side wall of the water tank, and is connected with the interior of the water tank, and a water outlet valve is provided on the water outlet pipe.

[0021] Preferably, in the above-mentioned high-efficiency energy-saving boiler device, a slag cleaning door is provided on the lower side of the furnace body shell for removing slag in the furnace body, and the slag cleaning door is provided corresponding to the slag chamber.

[0022] Preferably, in the above-mentioned high-efficiency and energy-saving boiler device, the recovery and preheating structure comprises:

[0023] A preheating water tank is arranged on one side of the boiler body, and a supporting foot is arranged at the bottom thereof. A hollow structure is arranged inside the preheating water tank, and the other end of the water delivery pipe passes through the side wall of the preheating water tank and communicates with the interior of the preheating water tank;

[0024] A smoke recovery pipe, one end of which is fixedly connected to the smoke pipe and communicated with the smoke pipe, and the other end of which passes through the top wall of the preheating water tank and communicates with the hollow structure of the preheating water tank. A recovery fan is provided on the smoke recovery pipe. The smoke recovery pipe is provided with the recovery fan and a filtering structure is provided at the middle pipe section connected to the smoke pipe;

[0025] A flue gas circulation pipe is arranged in the hollow structure of the preheating water tank, which is a spiral structure, one end of which is connected to the flue gas recovery pipe, and the other end is connected to the flue gas discharge pipe, the flue gas discharge pipe penetrates the side wall of the preheating water tank, extends to the outside of the preheating water tank, and discharges the flue gas;

[0026] A water inlet pipe has one end connected to a water source, and the other end passes through the side wall of the preheating water tank and is communicated with the interior of the preheating water tank. A water inlet valve is provided on the water inlet pipe.

[0027] Preferably, in the above-mentioned high-efficiency energy-saving boiler device, the heat energy recovery structure includes:

[0028] A flue gas conveying pipe, one end of which is fixedly connected to the flue gas pipe and communicated with the flue gas pipe, and the other end of which penetrates the side wall of the furnace shell and extends into the furnace shell, and is located between the combustion device and the water tank. A conveying fan is arranged on the flue gas conveying pipe, and a filtering structure is arranged at the intermediate pipe section of the flue gas conveying pipe connected with the flue gas pipe and the conveying fan;

[0029] A release main pipe, which is a hollow structure with blocked ends at both ends, is arranged perpendicular to the smoke conveying pipe, is arranged in the furnace shell, and is connected to one end of the smoke conveying pipe arranged in the three-dimensional shell;

[0030] A plurality of release sub-pipes are provided, which are evenly spaced on the release main pipe, vertically arranged with the release main pipe, and communicated with the release main pipe.

[0031] Preferably, in the above-mentioned high-efficiency energy-saving boiler device, the flue gas conveying pipe is provided with the conveying fan and a heat-insulating structure is provided at the middle pipe section connected to the furnace shell.

[0032] Preferably, in the above-mentioned high-efficiency energy-saving boiler device, the filtering structure comprises:

[0033] A filter box is arranged on the smoke recovery pipe and the smoke delivery pipe, and has a hollow structure inside and a through groove on the top;

[0034] The activated carbon adsorption plate is arranged in the filter box, perpendicular to the smoke recovery pipe and the smoke delivery pipe, and has sealing strips on its sides. The activated carbon adsorption plate is arranged corresponding to the through slot, and has a handle on its top extending outside the through slot.

[0035] Preferably, in the above-mentioned high-efficiency and energy-saving boiler device, the insulation structure includes two hinged arc plates, on which U-shaped fixing blocks and limit blocks are arranged for connecting the two arc plates, and the arc plates are composed of a glass wool tube shell, asbestos cement, and a protective layer from the inside to the outside.

[0036] Preferably, in the above-mentioned high-efficiency and energy-saving boiler device, the control unit is arranged on the preheating water tank, and is electrically connected to the water supply valve, water outlet valve, water inlet valve, recovery fan and conveying fan, and is used to control the opening and closing of the water supply valve, water outlet valve, water inlet valve, recovery fan and conveying fan, and realize automatic control according to setting and monitoring.

[0037] Compared with the prior art, the present invention has the following beneficial effects: by setting a recovery preheating structure, the waste heat in the flue gas is used to preheat the water that will enter the furnace body in advance, and by recycling the flue gas into the preheating water tank, the water in the preheating water tank is preheated. When the water enters the furnace body, it has a certain temperature, which can effectively utilize the heat in the flue gas and improve the heating efficiency within a certain range.

[0038] By setting up a heat recovery structure, the heat in the flue gas can be recovered into the furnace body again, thereby enhancing the heating efficiency of the air in the furnace body. In addition, by setting up a release main pipe and multiple release sub-pipes, the uniformity of heat release into the furnace body can be ensured, and the uniform distribution of the recovered flue gas can be ensured, so as to achieve the purpose of utilizing the waste heat of high-temperature flue gas, avoid waste of resources, and reduce the energy consumption of the boiler device, which meets the requirements of energy saving and environmental protection.

[0039] By setting up a filtering structure, it is ensured that the flue gas in the recovery preheating device and the heat recovery device will not be blocked during circulation. The filtering structure adsorbs impurities in the flue gas to prevent the occurrence of blockage failures in the later stage and prevent the situation that the recovery efficiency is affected by the need for maintenance due to blockage;

[0040] And because the flue gas conveying pipe in the heat recovery device is relatively long, heat loss may occur when high-temperature flue gas is transported. Setting up a thermal insulation structure can ensure that the flue gas temperature will not dissipate during the heat transport process, thereby ensuring the heat recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the overall structure of the device provided by an embodiment of the present invention;

[0043] Figure 2 A schematic cross-sectional structure diagram of the entire device provided by an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the structure of the recovery and preheating structure provided in an embodiment of the present invention;

[0045] Figure 4 A schematic diagram of the structure of a heat recovery structure provided by an embodiment of the present invention;

[0046] Figure 5 A schematic diagram of the structure of a filtering structure provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] See also Figure 1-5 As shown, the present application provides a high-efficiency and energy-saving boiler device, comprising:

[0050] The boiler body 1 has support legs at the bottom, which are fixed at the bottom of the boiler body and are cylindrical in shape, with four support legs respectively located at the four corners of the boiler body;

[0051] A recovery and preheating structure 2, connected to the boiler body 1, is used to recover flue gas heat and preheat inlet water;

[0052] The heat recovery structure 3 is connected to the boiler body 1 and is used to recover the flue gas heat, and recover the heat into the boiler body 1 to assist in heating the air;

[0053] The filtering structure 4 is arranged on the recovery and preheating component 2 and the heat recovery component 3, and is used to filter the output flue gas to prevent dust and other impurities in the flue gas from flowing for a long time and causing blockage of the recovery and preheating component 2 and the heat recovery component 3;

[0054] The heat preservation structure 5 is arranged on the heat recovery component 3 and is used to keep the flue gas in the heat recovery component 3 warm to prevent the heat from dissipating and affecting the heat recovery efficiency;

[0055] The control unit 6 is electrically connected to the boiler body 1, the recovery and preheating component 2 and the heat recovery component 3, and is used to control the start and stop coordination between the various components.

[0056] It should be noted that when the flue gas is discharged through the boiler body 1, it enters the recovery and preheating device 2 and the heat recovery device 3 respectively, and the waste heat of the high-temperature flue gas is used to preheat the incoming water and the air in the furnace body. The filter structure 4 is set to first filter out impurities such as dust in the high-temperature flue gas to ensure the safety of subsequent processes. The control and coordination between the various structures are achieved through the control unit 6.

[0057] To further optimize the above technical solution, the boiler body 1 includes:

[0058] The furnace shell 11 has a smoke exhaust port at the top;

[0059] A water tank 12 is disposed in the furnace shell 11 and fixedly connected to the inner wall of the furnace shell 11. The water tank 12 is an annular structure.

[0060] A water-cooled wall 13 is disposed on the furnace shell 11 and at the lower side of the water tank 12;

[0061] The flow pipe 14 is disposed in the annular structure of the water tank 12 and is fixedly connected to the outer wall of the water tank 12; the flow pipe 14 is a spiral structure;

[0062] The smoke pipe 15 is disposed at the smoke exhaust port of the furnace shell 11, is fixedly connected to the furnace shell 11, and is communicated with the flow pipe 14. The smoke passes through the flow pipe 14 and enters the smoke pipe 15 for discharge;

[0063] The combustion device 16 is disposed in the furnace shell 11 and fixedly connected to the inner wall of the furnace shell 11 for heating the air in the furnace. The bottom space of the combustion device 16 forms an ash cavity.

[0064] A water pipe 17 is provided on one side of the water tank 12, and a water valve 171 is provided on the water pipe 17. One end of the water pipe 17 passes through the side wall of the furnace body shell 11 and the side wall of the water tank 12, and is communicated with the interior of the water tank 12; a water outlet pipe 18 is provided on the other side of the water tank 12, one end of the water outlet pipe 18 is connected to the water end, and the other end passes through the side wall of the furnace body shell 11 and the side wall of the water tank 12, and is communicated with the interior of the water tank 12, and a water outlet valve 181 is provided on the water outlet pipe 18.

[0065] A slag cleaning door 19 is provided at the lower side of the furnace body shell 11 for removing slag in the furnace body, and the slag cleaning door 19 is provided corresponding to the slag chamber.

[0066] Specifically, the combustion device 16 heats the air in the furnace body, causing the water in the water tank to absorb heat. Water is filled into the water tank through the water pipe 17, and the heated hot water is transported to the water use end through the water outlet pipe 18. The furnace ash can be cleaned regularly through the slag cleaning door 19.

[0067] In order to further optimize the above technical solution, the recovery and preheating structure 2 includes:

[0068] The preheating water tank 21 is arranged on one side of the boiler body 1, and a supporting foot is arranged at the bottom thereof. A hollow structure is arranged inside the preheating water tank 21, and the other end of the water delivery pipe 17 passes through the side wall of the preheating water tank 21 and communicates with the interior of the preheating water tank 21;

[0069] A smoke recovery pipe 22, one end of which is fixedly connected to the smoke pipe 15 and communicated with the smoke pipe 15, and the other end of which passes through the top wall of the preheating water tank 21 and communicates with the hollow structure of the preheating water tank 21. A recovery fan 23 is provided on the smoke recovery pipe 22. The smoke recovery pipe 22 is provided with the recovery fan 23 and a filter structure 4 is provided at the middle pipe section connected to the smoke pipe 15;

[0070] The flue gas circulation pipe 24 is arranged in the hollow structure of the preheating water tank 21, and is a spiral structure. One end of the flue gas circulation pipe 24 is connected to the flue gas recovery pipe 22, and the other end is connected to the flue gas discharge pipe 25. The flue gas discharge pipe 25 passes through the side wall of the preheating water tank 21 and extends to the outside of the preheating water tank 21 to discharge the flue gas.

[0071] The water inlet pipe 26 has one end connected to a water source, and the other end passes through the side wall of the preheating water tank 21 and communicates with the interior of the preheating water tank 21 . The water inlet pipe 26 is provided with a water inlet valve 261 .

[0072] It should be noted that after the smoke in the smoke pipe 15 is discharged, the high-temperature smoke is filtered and transported to the preheating water tank 21 under the action of the recovery fan 23. The spiral smoke circulation pipe 24 in the preheating water tank 21 uses the high-temperature smoke to preheat the water in the preheating water tank, making full use of the recovered heat. The preheating water tank 21 is injected with water through the water inlet pipe 26, and the preheated water is transported to the water tank 12 through the water pipe 17, and a water pump is provided on the water pipe 17.

[0073] To further optimize the above technical solution, the heat recovery structure 3 includes:

[0074] A flue gas conveying pipe 31, one end of which is fixedly connected to the flue gas pipe 15 and communicated with the flue gas pipe 15, and the other end of which penetrates the side wall of the furnace shell 11 and extends into the furnace shell 11, and is located between the combustion device 16 and the water tank 12. A conveying fan 32 is provided on the flue gas conveying pipe 31, and a filtering structure 4 is provided at the middle pipe section of the flue gas conveying pipe 31 connected to the flue gas pipe 15;

[0075] The release main pipe 33 is a structure with both ends blocked and a hollow interior, which is arranged perpendicular to the smoke conveying pipe 31, arranged in the furnace shell 11, and communicated with one end of the smoke conveying pipe 31 arranged in the furnace shell 11;

[0076] There are a plurality of release sub-pipes 34 , which are evenly spaced apart on the release main pipe 33 , vertically disposed to the release main pipe 33 , and communicated with the release main pipe 33 .

[0077] The fume conveying pipe 31 is provided with the conveying fan 32 and a heat-insulating structure 5 is provided at the middle pipe section connected to the furnace shell 11 .

[0078] Specifically, after the smoke in the smoke pipe 15 is discharged, the high-temperature smoke is filtered and transported to the furnace body under the action of the conveying fan 32. By setting up the release main pipe 33 and multiple evenly arranged release sub-pipes 34, the high-temperature smoke can be evenly discharged into the furnace body, and the heat can be evenly released, so that it can heat the air in the furnace body, and the auxiliary combustion equipment 16 improves the heating efficiency.

[0079] To further optimize the above technical solution, the filtering structure 4 includes:

[0080] The filter box 41 is arranged on the smoke recovery pipe 22 and the smoke delivery pipe 31, and has a hollow structure inside and a through groove on the top;

[0081] The activated carbon adsorption plate 42 is arranged in the filter box 41, perpendicular to the smoke recovery pipe 22 and the smoke delivery pipe 31, and has sealing strips 43 on its sides. The activated carbon adsorption plate 42 is arranged corresponding to the through groove, and has a handle 44 on its top, extending outside the through groove.

[0082] Specifically, after passing through the activated carbon adsorption plate 42, the high-temperature flue gas enters the flue gas recovery pipe 22 and the flue gas delivery pipe 31 through the recovery fan 23 and the delivery fan 32 respectively, so that impurities such as dust that may exist in the flue gas will not affect the fan and the pipeline. The sealing strip 43 set on the activated carbon adsorption plate 42 can ensure that the flue gas will not leak.

[0083] The heat preservation structure 5 includes two hinged arc plates, on which a U-shaped fixing block 51 and a stopper block 52 are arranged for connecting the two arc plates, and the arc plates are composed of a glass wool tube shell, asbestos cement, and a protective layer from the inside to the outside. Since the flue gas conveying pipe 31 in the heat recovery device is relatively long, the heat preservation structure can ensure that no heat loss will occur during the heat conveying process when high-temperature flue gas is conveyed.

[0084] To further optimize the above technical solution, the control unit 6 is arranged on the preheated water tank 21, and is electrically connected to the water supply valve 171, the water outlet valve 181, the water inlet valve 261, the recovery fan 23 and the conveying fan 32, and is used to control the opening and closing of the water supply valve 171, the water outlet valve 181, the water inlet valve 261, the recovery fan 23 and the conveying fan 32, and realize automatic control according to the setting and monitoring.

[0085] It should be noted that the control unit 6 also includes a water level gauge and a temperature sensor arranged in the water tank 12 and the preheated water tank 21. The water level and water temperature can be detected by the control unit, and the opening and closing of the water supply valve 171, the water outlet valve 181, the water inlet valve 261, the recovery fan 23 and the conveying fan 32 can be controlled in real time. In addition, pressure sensors can be arranged in the flue gas recovery pipe 22 and the flue gas conveying pipe 31 according to the situation to detect the pressure of the high-temperature flue gas, avoid accidents and ensure safety.

[0086] The beneficial effects of the embodiments of the present application are as follows: by setting a recovery preheating structure, the waste heat in the flue gas is first used to preheat the water that will enter the furnace body in advance, and by recycling the flue gas into the preheating water tank, the water in the preheating water tank is preheated. When the water enters the furnace body, it has a certain temperature, which can effectively utilize the heat in the flue gas and improve the heating efficiency within a certain range;

[0087] By setting up a heat recovery structure, the heat in the flue gas can be recovered into the furnace body again, thereby enhancing the heating efficiency of the air in the furnace body. In addition, by setting up a release main pipe and multiple release sub-pipes, the uniformity of heat release into the furnace body can be ensured, and the uniform distribution of the recovered flue gas can be ensured, so as to achieve the purpose of utilizing the waste heat of high-temperature flue gas, avoid waste of resources, and reduce the energy consumption of the boiler device, which meets the requirements of energy saving and environmental protection.

[0088] By setting up a filtering structure, it is ensured that the flue gas in the recovery preheating device and the heat recovery device will not be blocked during circulation. The filtering structure adsorbs impurities in the flue gas to prevent the occurrence of blockage failures in the later stage and prevent the situation that the recovery efficiency is affected by the need for maintenance due to blockage;

[0089] And because the flue gas conveying pipe in the heat recovery device is relatively long, heat loss may occur when high-temperature flue gas is transported. Setting up a thermal insulation structure can ensure that the flue gas temperature will not dissipate during the heat transport process, thereby ensuring the heat recovery efficiency.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-efficiency and energy-saving boiler device, characterized in that: include: The boiler body has support legs at the bottom, which are fixed at the bottom of the boiler body and are cylindrical in shape, with four support legs respectively located at the four corners of the boiler body; A recovery and preheating structure, connected to the boiler body, for recovering flue gas heat and preheating incoming water; A heat recovery structure is connected to the boiler body and is used to recover the heat of the flue gas and return the heat to the boiler body to assist in heating the air; A filtering structure is provided on the recovery preheating component and the heat recovery component, and is used to filter the output flue gas to prevent dust and other impurities in the flue gas from being blocked by the recovery preheating component and the heat recovery component after a long period of circulation; The heat preservation structure is arranged on the heat recovery component and is used to keep the flue gas in the heat recovery component warm to prevent the heat from dissipating and affecting the heat recovery efficiency; The control unit is electrically connected to the boiler body, the recovery and preheating component and the heat energy recovery component, and is used to control the start and stop coordination between the various components.

2. A highly efficient and energy-saving boiler device according to claim 1, characterized in that: The boiler body comprises: The furnace shell has a smoke exhaust port at the top; A water tank is disposed in the furnace shell and fixedly connected to the inner wall of the furnace shell, and the water tank is an annular structure; A water-cooled wall is arranged on the furnace shell and on the lower side of the water tank; A circulation pipe is arranged in the annular structure of the water tank and is fixedly connected to the outer wall of the water tank; the circulation pipe is a spiral structure; A smoke pipe is arranged at the smoke exhaust port of the furnace shell, is fixedly connected to the furnace shell, and is communicated with the flow pipe. The smoke passes through the flow pipe and enters the smoke pipe for discharge; The combustion equipment is arranged in the furnace shell and fixedly connected to the inner wall of the furnace shell for heating the air in the furnace. The bottom space of the combustion equipment forms an ash cavity.

3. The high-efficiency and energy-saving boiler device according to claim 2, characterized in that: A water supply pipe is provided on one side of the water tank, a water supply valve is provided on the water supply pipe, one end of the water supply pipe passes through the side wall of the furnace body shell and the side wall of the water tank, and is connected with the interior of the water tank; a water outlet pipe is provided on the other side of the water tank, one end of the water outlet pipe is connected to the water use end, and the other end passes through the side wall of the furnace body shell and the side wall of the water tank, and is connected with the interior of the water tank, and a water outlet valve is provided on the water outlet pipe.

4. The high-efficiency and energy-saving boiler device according to claim 3, characterized in that: A slag cleaning door is arranged at the lower side of the furnace body shell for removing slag in the furnace body, and the slag cleaning door is arranged corresponding to the slag cavity.

5. The high-efficiency and energy-saving boiler device according to claim 4, characterized in that: The recovery and preheating structure comprises: A preheating water tank is arranged on one side of the boiler body, and a supporting foot is arranged at the bottom thereof. A hollow structure is arranged inside the preheating water tank, and the other end of the water delivery pipe passes through the side wall of the preheating water tank and communicates with the interior of the preheating water tank; A smoke recovery pipe, one end of which is fixedly connected to the smoke pipe and communicated with the smoke pipe, and the other end of which passes through the top wall of the preheating water tank and communicates with the hollow structure of the preheating water tank. A recovery fan is provided on the smoke recovery pipe. The smoke recovery pipe is provided with the recovery fan and a filtering structure is provided at the middle pipe section connected to the smoke pipe; A flue gas circulation pipe is arranged in the hollow structure of the preheating water tank, which is a spiral structure, one end of which is connected to the flue gas recovery pipe, and the other end is connected to the flue gas discharge pipe, the flue gas discharge pipe penetrates the side wall of the preheating water tank, extends to the outside of the preheating water tank, and discharges the flue gas; A water inlet pipe has one end connected to a water source, and the other end passes through the side wall of the preheating water tank and is communicated with the interior of the preheating water tank. A water inlet valve is provided on the water inlet pipe.

6. The high-efficiency and energy-saving boiler device according to claim 5, characterized in that: The heat energy recovery structure comprises: A flue gas conveying pipe, one end of which is fixedly connected to the flue gas pipe and communicated with the flue gas pipe, and the other end of which penetrates the side wall of the furnace shell and extends into the furnace shell, and is located between the combustion device and the water tank. A conveying fan is arranged on the flue gas conveying pipe, and a filtering structure is arranged at the intermediate pipe section of the flue gas conveying pipe connected with the flue gas pipe and the conveying fan; A release main pipe, which is a hollow structure with blocked ends at both ends, is arranged perpendicular to the smoke conveying pipe, is arranged in the furnace shell, and is connected to one end of the smoke conveying pipe arranged in the three-dimensional shell; A plurality of release sub-pipes are provided, which are evenly spaced on the release main pipe, vertically arranged with the release main pipe, and communicated with the release main pipe.

7. The high-efficiency and energy-saving boiler device according to claim 6, characterized in that: The fume conveying pipe is provided with the conveying fan and a heat-insulating structure is provided at the middle pipe section connected with the furnace shell.

8. The high-efficiency and energy-saving boiler device according to claim 7, characterized in that: The filtering structure comprises: A filter box is arranged on the smoke recovery pipe and the smoke delivery pipe, and has a hollow structure inside and a through groove on the top; The activated carbon adsorption plate is arranged in the filter box, perpendicular to the smoke recovery pipe and the smoke delivery pipe, and has sealing strips on its sides. The activated carbon adsorption plate is arranged corresponding to the through slot, and has a handle on its top extending outside the through slot.

9. The high-efficiency and energy-saving boiler device according to claim 8, characterized in that: The thermal insulation structure comprises two hinged arc plates, on which a U-shaped fixing block and a limiting block are arranged for connecting the two arc plates. The arc plates are composed of a glass wool tube shell, asbestos cement and a protective layer from the inside to the outside.

10. The high-efficiency and energy-saving boiler device according to claim 9, characterized in that: The control unit is arranged on the preheating water tank and is electrically connected to the water supply valve, water outlet valve, water inlet valve, recovery fan and conveying fan, and is used to control the opening and closing of the water supply valve, water outlet valve, water inlet valve, recovery fan and conveying fan, and realize automatic control according to setting and monitoring.

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