Energy-saving coal-fired boiler

Abstract

The utility model provides an energy-saving coal-fired boiler, and mainly relates to the field of coal-fired boilers. An energy-saving coal-fired boiler comprises a boiler body, a combustion frame is fixedly arranged on the portion, close to the bottom, of the inner wall of the boiler body, combustion bins are arranged on the top of the combustion frame at intervals, the combustion bins are fixedly connected with the inner wall of the boiler body, a water bin is arranged between the combustion bins and the inner wall of the boiler body, a smoke exhaust pipe is fixedly arranged on the combustion bins, and a hopper is fixedly arranged on the outer ring of the boiler body; a stirring frame is rotationally connected to the combustion frame, and a slag ash box is movably arranged at the bottom of the furnace body. The utility model has the beneficial effects that water in the water sump is stirred through the rotating impeller; high-temperature flue gas generated after burning exchanges heat with water in the water sump, so that the heat utilization effect is further improved; coal is stirred through the stirring frame, the situation that combustion is insufficient due to coal accumulation on the combustion frame is avoided, meanwhile, slag and ash generated after combustion can be separated, and stove ash splashing is avoided.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of coal-fired boilers, in particular to an energy-saving coal-fired boiler. Background Art

[0002] A coal-fired boiler is a boiler that uses coal as fuel. It refers to a thermal power device that releases heat through the combustion of coal in the furnace, heating the heat medium water or other organic heat carrier to a certain temperature. During the use of a general boiler, the burning coal is directly poured into the boiler. The accumulation of coal inside is prone to incomplete combustion, which can easily lead to waste of coal. At the same time, the existing coal-fired boiler does not separate the coal and ash, so that the coal will fall into the ash during the combustion process, affecting the combustion efficiency of the coal. Moreover, the coal falling directly into the ash will cause the ash to splash, causing the dust content in the exhaust gas to increase sharply, affecting the subsequent purification treatment. Utility Model Content

[0003] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0004] An energy-saving coal-fired boiler comprises a furnace body, wherein a combustion rack is fixedly arranged near the bottom of the inner wall of the furnace body, a combustion bin is arranged at intervals on the top of the combustion bin, the combustion bin is fixedly connected to the inner wall of the furnace body, a water bin is arranged between the combustion bin and the inner wall of the furnace body, a smoke exhaust pipe is fixedly arranged on the combustion bin, a hopper is fixedly arranged on the outer ring of the furnace body near the top of the combustion rack, the outer ring of the furnace body is rotatably connected to an impeller, the combustion rack is rotatably connected to a stirring rack, a slag ash box is movably arranged at the bottom of the furnace body, an ash discharge port is arranged at the bottom of the furnace body, and the slag ash box is located at the bottom of the ash discharge port.

[0005] A first drive motor is fixedly arranged on the outer ring of the furnace body. The first drive motor is drivingly connected to an impeller, and the impeller is located inside the water bin.

[0006] A heat insulation cover is fixedly arranged at the bottom of the stirring frame, a stepped groove is arranged at the center of the bottom of the furnace body, a second drive motor is fixedly arranged inside the stepped groove, an output end of the second drive motor is fixedly connected to the heat insulation cover, the heat insulation cover abuts against the stepped groove, a scraper is fixedly arranged on the outer ring of the heat insulation cover, and the bottom of the scraper abuts against the bottom of the furnace body.

[0007] A water inlet pipe and a water outlet pipe are fixedly arranged on the furnace body, and the water inlet pipe and the water outlet pipe are both communicated with the inside of the water tank.

[0008] A feed inlet is provided on the furnace body near the top of the combustion frame, the feed inlet is communicated with the hopper, and an air inlet pipe is fixedly arranged on the furnace body near the top of the combustion frame.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model has a simple structure and is easy to install and use. The water in the water tank is stirred by a rotating impeller, so the heating area is increased to ensure uniform heating during heating and improve the heating effect. The high-temperature flue gas generated after combustion exchanges heat with the water in the water tank, further improving the heat utilization effect. The utility model stirs the coal by a stirring rack to avoid the accumulation of coal on the combustion rack and the occurrence of insufficient combustion, thereby increasing the contact area between the introduced gas and the burning coal, and improving the combustion efficiency of the coal-fired boiler. At the same time, the slag ash after combustion can be separated to avoid the splashing of furnace ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0012] Attached Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0013] Attached Figure 3 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0014] Attached Figure 4 This is a schematic diagram of the structure of the stirring frame of the utility model;

[0015] Attached Figure 5 It is a schematic diagram of the structure of the smoke exhaust pipe of the utility model.

[0016] The numbers shown in the accompanying drawings are: 1, furnace body; 2, combustion frame; 3, combustion chamber; 4, water tank; 5, smoke exhaust pipe; 6, hopper; 7, impeller; 8, stirring frame; 9, slag box; 10, first drive motor; 11, heat insulation cover; 12, second drive motor; 13, scraper; 14, water inlet pipe; 15, water outlet pipe; 16, air inlet pipe. DETAILED DESCRIPTION

[0017] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0018] In conjunction with the accompanying drawings, an energy-saving coal-fired boiler comprises a furnace body 1, a combustion rack 2 is fixedly arranged on the inner wall of the furnace body 1 near the bottom, the combustion rack 2 is a mesh metal grid, a combustion bin 3 is spaced apart on the top of the combustion rack 2, the combustion bin 3 is fixedly connected to the inner wall of the furnace body 1, a water bin 4 is arranged between the combustion bin 3 and the inner wall of the furnace body 1, a smoke exhaust pipe 5 is fixedly arranged on the combustion bin 3, the smoke exhaust pipe 5 is located inside the water bin 4, and the other end of the smoke exhaust pipe 5 passes through the side wall of the furnace body 1. Through this structural design, the high-temperature flue gas generated after the combustion of coal can exchange heat with the water in the water bin 4, which is beneficial to improving the heating efficiency. A hopper 6 is fixedly arranged on the outer ring of the furnace body 1 near the top of the combustion rack 2, the outer ring of the furnace body 1 is rotatably connected to an impeller 7, and the combustion rack 2 is rotatably connected to a stirring rack 8. A slag ash box 9 is movably arranged at the bottom of the furnace body 1, and an ash discharge port is arranged at the bottom of the furnace body 1, and the slag ash box 9 is located at the bottom of the ash discharge port.

[0019] The first drive motor 10 is fixedly arranged on the outer ring of the furnace body 1, and the first drive motor 10 is transmission-connected with the impeller 7. The impeller 7 is located inside the water tank 4. Through this structural design, the water inside the water tank 4 has fluidity when heated, which is conducive to uniform heating.

[0020] A heat insulation cover 11 is fixedly arranged at the bottom of the stirring frame 8, and the heat insulation cover 11 is made of high-temperature resistant heat-insulating material. The stirring frame 8 is made of high-temperature resistant material. A stepped groove is arranged at the bottom center of the furnace body 1, and a second drive motor 12 is fixedly arranged inside the stepped groove. The output end of the second drive motor 12 is fixedly connected to the heat insulation cover 11, and the heat insulation cover 11 abuts against the stepped groove. A scraper 13 is fixedly arranged on the outer ring of the heat insulation cover 11, and the bottom of the scraper 13 abuts against the bottom of the furnace body 1. Through this structural design, the coal on the combustion frame 2 is stirred so that the coal can be evenly and fully burned, and at the same time, it is beneficial to let the ash after combustion fall down, and the ash is gathered into the slag box 9 through the scraper 13.

[0021] A water inlet pipe 14 and a water outlet pipe 15 are fixedly arranged on the furnace body 1 , and both the water inlet pipe 14 and the water outlet pipe 15 are communicated with the interior of the water tank 4 .

[0022] The furnace body 1 is provided with a feed port near the top of the combustion frame 2, and the feed port is connected to the hopper 6. The furnace body 1 is fixedly provided with an air inlet pipe 16 near the top of the combustion frame 2, and a blower is fixedly provided at the other end of the air inlet pipe 16. Through this structural design, external wind is sent into the combustion chamber 3, increasing the oxygen content inside the combustion chamber 3, so that the coal burns more fully.

[0023] When the device is in use, water is added into the water bin 4 through the water inlet pipe 14, coal is added into the hopper 6, and the coal falls onto the combustion rack 2 through the feed port. The external blower is started to let the external air enter the combustion bin 3 through the air inlet pipe 16, so as to increase the oxygen content inside the combustion bin 3 and make the coal burn more fully; the first drive motor 10 is started to drive the impeller 7 to rotate, and the water inside the water bin 4 is stirred to make it evenly heated; the second drive motor 12 is started to drive the stirring rack 8 and the scraper 13 to rotate, and the stirring rack 8 stirs the coal on the top of the combustion rack 2 to make the coal burn evenly. At the same time, after stirring, the slag ash after combustion falls to the bottom of the furnace body 1, and the rotating scraper 13 collects the slag ash into the slag ash box 9.

[0024] 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. An energy-saving coal-fired boiler, comprising a furnace body (1), characterized in that: A combustion rack (2) is fixedly arranged near the bottom of the inner wall of the furnace body (1), a combustion chamber (3) is arranged at intervals on the top of the combustion rack (2), the combustion chamber (3) is fixedly connected to the inner wall of the furnace body (1), a water tank (4) is arranged between the combustion chamber (3) and the inner wall of the furnace body (1), a smoke exhaust pipe (5) is fixedly arranged on the combustion chamber (3), a hopper (6) is fixedly arranged near the top of the combustion rack (2) on the outer ring of the furnace body (1), the outer ring of the furnace body (1) is rotatably connected to an impeller (7), the combustion rack (2) is rotatably connected to a stirring rack (8), a slag ash box (9) is movably arranged at the bottom of the furnace body (1), an ash discharge port is arranged at the bottom of the furnace body (1), and the slag ash box (9) is located at the bottom of the ash discharge port.

2. An energy-saving coal-fired boiler according to claim 1, characterized in that: A first drive motor (10) is fixedly arranged on the outer ring of the furnace body (1), the first drive motor (10) is drivingly connected to an impeller (7), and the impeller (7) is located inside the water tank (4).

3. The energy-saving coal-fired boiler according to claim 1, characterized in that: A heat insulation cover (11) is fixedly arranged at the bottom of the stirring frame (8), a stepped groove is arranged at the center of the bottom of the furnace body (1), a second drive motor (12) is fixedly arranged inside the stepped groove, an output end of the second drive motor (12) is fixedly connected to the heat insulation cover (11), the heat insulation cover (11) abuts against the stepped groove, a scraper (13) is fixedly arranged on the outer ring of the heat insulation cover (11), and the bottom of the scraper (13) abuts against the bottom of the furnace body (1).

4. The energy-saving coal-fired boiler according to claim 1, characterized in that: A water inlet pipe (14) and a water outlet pipe (15) are fixedly arranged on the furnace body (1), and the water inlet pipe (14) and the water outlet pipe (15) are both connected to the inside of the water tank (4).

5. The energy-saving coal-fired boiler according to claim 1, characterized in that: The furnace body (1) is provided with a feed inlet near the top of the combustion frame (2), the feed inlet is connected to the hopper (6), and the furnace body (1) is fixedly provided with an air inlet pipe (16) near the top of the combustion frame (2).

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