Coal-fired boiler

Abstract

The utility model discloses a coal -fired boiler, this coal -fired boiler includes: the furnace body is provided with the grid plate in the bottom wall inboard, first motor is set up in the bottom wall outside of furnace body, and the drive shaft of first motor is connected in the bottom wall and the grid plate, the stirring rod is set up in the one side of grid plate and is away from the bottom wall and with the drive shaft transmission of first motor connects, is used for stirring the coal material in the furnace body, the utility model technical scheme's coal -fired boiler's stirring rod can even stirring the coal material on the grid plate, to make the coal material can be fully heated to improve the combustion efficiency. Moreover, through a plurality of ventilation pipes can control the air circulation inside the furnace body, further improve the full combustion of coal material. In addition, the feed hopper is provided with the broken material device for crushing coal material, so that when the coal material is sent to the boiler, the coal material can also be uniformly crushed, so that the shape and size of the coal material entering the boiler are more uniform, further improving the combustion efficiency of the coal material.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to a coal-fired boiler that facilitates complete combustion and is beneficial to energy conservation. Background Technology

[0002] A boiler is a heating device used to generate hot water. In some related technologies, the coal inside the boiler is usually stationary during operation, and air circulation within the boiler is not smooth, thus affecting the complete combustion of the coal. Furthermore, the shape and size of the coal are often uneven; excessively large pieces of coal can negatively impact combustion within the boiler. Utility Model Content

[0003] The main purpose of this invention is to propose a coal-fired boiler that facilitates complete combustion and is conducive to energy saving, aiming to solve the problem of poor boiler combustion efficiency in related technologies.

[0004] To achieve the above objectives, this utility model proposes a coal-fired boiler, which includes:

[0005] The furnace body has a grid plate installed on the inner side of its bottom wall;

[0006] The first motor is located on the outer side of the bottom wall of the furnace body, and the drive shaft of the first motor passes through the bottom wall and the grid plate;

[0007] A stirring rod is located on the side of the grid plate facing away from the bottom wall and is connected to the drive shaft of the first motor to stir the coal inside the furnace.

[0008] Furthermore, the coal-fired boiler also includes:

[0009] Support pillars, located on the outer side of the bottom wall, are used to support the furnace body;

[0010] The base plate, located between the pillars, is used to support the first motor.

[0011] Furthermore, the coal-fired boiler also includes:

[0012] The feeding hopper is located on the outer side wall of the furnace body and is used to supply coal into the furnace body. The feeding hopper includes a bearing plate for carrying coal and a first limiting plate and a second limiting plate respectively connected to opposite sides of the bearing plate. The first limiting plate and the second limiting plate are used to limit the feeding direction of the coal. The bearing plate, the first limiting plate and the second limiting plate form a feeding channel, which is connected to the inner cavity of the furnace body.

[0013] The pressure plate is located between the first limiting plate and the second limiting plate and is arranged opposite to the bearing surface of the bearing plate. The pressure plate has two opposite connecting surfaces, which face the first limiting plate and the second limiting plate respectively.

[0014] The second motor is located on the outside of the first limiting plate and / or the outside of the second limiting plate;

[0015] The turntable has a first surface and a second surface that are opposite to each other. The first surface is fixedly connected to the drive shaft of the second motor, and the second surface is eccentrically connected to the end of the connecting surface that is relatively far from the side wall in the feeding direction of the feed hopper.

[0016] The movable connector has one end axially connected to the inner side of the first limiting plate or the inner side of the second limiting plate, and the other end axially connected to the end of the connecting surface that is relatively close to the side wall in the feeding direction of the feed hopper.

[0017] Furthermore, the feed inlet of the hopper is equipped with a cover plate, which is used to open and close the feed inlet.

[0018] Furthermore, the first gap formed between the end of the pressure plate that is relatively far from the side wall in the feeding direction of the hopper and the bearing plate is greater than the second gap formed between the end of the pressure plate that is relatively close to the side wall in the feeding direction of the hopper and the bearing plate.

[0019] Furthermore, a storage box is provided on the outer side wall of the furnace body, and a burner is installed inside the storage box. The burner is used to ignite the coal inside the furnace body.

[0020] Furthermore, an ash discharge pipe is provided on the outer side of the side wall. The ash discharge pipe is connected to the inner cavity of the furnace body for discharging ash. The ash outlet of the ash discharge pipe is provided with a first cover, which is used to open and close the ash outlet.

[0021] Furthermore, the outer side wall of the furnace body is provided with multiple ventilation pipes arranged at equal intervals along the circumference of the side wall. Each ventilation pipe is connected to the inner cavity of the furnace body, and each ventilation pipe opening is provided with a second cover, which is used to open and close the opening of the ventilation pipe.

[0022] Furthermore, the second cover is flipped and connected to the edge of the ventilation pipe opening, the ventilation pipe opening has a groove, and the second cover is provided with a protrusion that engages and matches the groove.

[0023] Furthermore, the coal-fired boiler also includes:

[0024] Water pipes are installed on the outer side wall of the furnace body, and the water pipes form a heat-conducting connection with the furnace body;

[0025] The water inlet port is located at one end of the water pipe and is used to connect to a water source to supply water to the water pipe;

[0026] The water outlet is located at the other end of the water pipe and is used to discharge water from the pipe.

[0027] Furthermore, the coal-fired boiler also includes:

[0028] A protective shell is installed on the outer side wall of the furnace body;

[0029] The water pipes are installed inside the protective casing, while the inlet and outlet ports are exposed outside the casing.

[0030] The beneficial effects of this utility model's technical solution are as follows:

[0031] The stirring rod inside the boiler can evenly agitate the coal on the grid plate, ensuring that the coal is fully heated and improving combustion efficiency. Furthermore, multiple ventilation pipes control the airflow inside the furnace, further enhancing the complete combustion of the coal.

[0032] In addition, the feed hopper is equipped with a crushing device for crushing coal, so that the coal can be crushed evenly when it is fed to the boiler, thereby making the shape and size of the coal entering the boiler more uniform and further improving the combustion efficiency of the coal. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a coal-fired boiler according to an embodiment of the present utility model from one perspective;

[0034] Figure 2 for Figure 1 A structural schematic diagram of a medium-sized coal-fired boiler from another perspective;

[0035] Figure 3 for Figure 1 Another structural schematic diagram of a medium-sized coal-fired boiler;

[0036] Figure 4 for Figure 1 A cross-sectional view of a medium-sized coal-fired boiler;

[0037] Figure 5 for Figure 1 A schematic diagram showing the connection between the second motor and the pressure plate of a medium-sized coal-fired boiler.

[0038] Figure 6 for Figure 4 A schematic diagram of the greywater pipe structure.

[0039] Explanation of icon numbers:

[0040] Furnace body 100; bottom wall 101; side wall 102; support column 110; bottom plate 120; storage box 130; burner 140; ash discharge pipe 150; first cover 160; ventilation pipe 170; second cover 180; grid plate 200; first motor 300; stirring rod 400; feed hopper 500; bearing plate 510; first limiting plate 520; second limiting plate 530; pressure plate 600; connecting surface 610; first spacing 601; second spacing 602; second motor 710; turntable 720; first surface 721; second surface 722; movable connector 730; cover plate 740; water pipe 800; water inlet port 810; water outlet port 820; protective shell 900.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, top, bottom, side, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0045] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0046] To address the technical deficiencies in related technologies, this embodiment provides a coal-fired boiler, such as... Figures 1 to 4 As shown, the coal-fired boiler in this embodiment includes a furnace body 100, a first motor 300, and a stirring rod 400.

[0047] The interior of the furnace body 100 is constructed as a combustion chamber for burning the coal fed into the furnace body 100. A grid plate 200 is provided on the inner side of the bottom wall 101 of the furnace body 100, and the coal fed into the furnace body 100 is placed on the grid plate 200. A support column 110 is provided on the outer side of the bottom wall 101 of the furnace body 100 to support the furnace body 100.

[0048] For example, the support column 110 can be a cylindrical structure or composed of multiple support columns. A base plate 120 is provided between the support columns 110. A first motor 300 is provided on the side of the base plate 120 facing the bottom wall 101 of the furnace body 100, that is, the first motor 300 is located on the outside of the bottom wall 101 of the furnace body 100. The drive shaft of the first motor 300 passes through the bottom wall 101 and the grid plate 200 to extend into the furnace body 100. Continuing to refer to... Figures 1 to 4 As shown, the stirring rod 400 is disposed on the side of the grid plate 200 facing away from the bottom wall 101 and is connected to the drive shaft of the first motor 300. The torque generated when the first motor 300 starts is transmitted to the stirring rod 400, thereby enabling the stirring rod 400 to rotate relative to the furnace body 100. This allows the coal in the furnace body 100 to be stirred evenly, so that the coal continuously tumbles in the furnace body 100 during combustion, thus ensuring that the surface of the coal is in full contact with the air, which is beneficial to improving combustion efficiency.

[0049] Specifically, such as Figures 1 to 4 As shown, a storage box 130 is provided on the outer side wall 102 of the furnace body 100, and a burner 140 is provided inside the storage box 130. The burner 140 is used to ignite the coal inside the furnace body 100. An ash discharge pipe 150 is also provided on the outer side wall 102. The ash discharge pipe 150 is connected to the inner cavity of the furnace body 100 for discharging ash. A first cover 160 is provided at the ash outlet of the ash discharge pipe 150 for opening and closing the ash outlet.

[0050] Specifically, such as Figures 1 to 3 As shown, to facilitate airflow control within the furnace body 100, multiple ventilation pipes 170 are arranged at equal intervals along the circumference of the side wall 102 of the furnace body 100. Each ventilation pipe 170 communicates with the inner cavity of the furnace body 100. A second cover 180 is provided at the opening of each ventilation pipe 170, used for opening and closing the opening of the ventilation pipe 170. Exemplarily, the second cover 180 is connected to the edge of the opening of the ventilation pipe 170 by a hinge, and the opening of the ventilation pipe 170 forms a groove. The second cover 180 is provided with a protrusion that engages with the groove to facilitate opening and closing. Depending on the coal conditions within the coal-fired boiler, different numbers of ventilation pipes 170 can be opened and closed to create appropriate airflow within the furnace body 100, allowing sufficient oxygen to enter the furnace body 100 and further improving the combustion efficiency of the coal.

[0051] Specifically, such as Figures 1 to 4 As shown, the coal-fired boiler in this embodiment also includes a water pipe 800. The water pipe 800 is disposed on the outer side of the side wall 102 of the furnace body 100, and the water pipe 800 forms a thermally conductive connection with the furnace body 100. Thus, the water in the water pipe 800 can absorb heat from the furnace body 100 and be heated into hot water. Exemplarily, for ease of assembly, as... Figure 6 As shown, the water pipe 800 can be constructed by connecting and assembling several "S"-shaped pipe fittings. One end of the water pipe 800 is provided with a water inlet port 810, which is used to connect to a water source to supply water to the water pipe 800. The other end of the water pipe 800 is provided with a water outlet port 820, which is used to discharge water from the water pipe 800. For example, the water outlet port 820 can be configured as a faucet to facilitate the discharge of hot water from the water pipe 800.

[0052] Optionally, in order to protect water pipe 800 and reduce heat loss from water pipe 800, such as Figures 1 to 4 As shown, the coal-fired boiler in this embodiment also includes a protective shell 900, which is disposed on the outside of the side wall 102 of the furnace body 100. A water pipe 800 is installed inside the protective shell 900, and the water inlet port 810 and the water outlet port 820 are respectively exposed outside the protective shell 900 to facilitate water connection and drainage.

[0053] Compared with related technologies, in the technical solution of this embodiment, the stirring rod 400 inside the boiler can evenly stir the coal on the grid plate 200, thereby allowing the coal to be fully heated to improve combustion efficiency. Furthermore, the airflow inside the furnace body 100 can be controlled through multiple ventilation pipes 170, further improving the complete combustion of the coal.

[0054] Continue to refer to Figures 1 to 5 As shown, the coal-fired boiler in this embodiment also includes a feed hopper 500, a pressure plate 600, a second motor 710, a turntable 720, and a movable connecting piece 730.

[0055] The feed hopper 500 is located on the outer side of the side wall 102 of the furnace body 100 and is used to supply coal into the furnace body 100. The feed hopper 500 includes a support plate 510 for carrying the coal and a first limiting plate 520 and a second limiting plate 530 respectively connected to opposite sides of the support plate 510. The first limiting plate 520 and the second limiting plate 530 are used to limit the feeding direction a of the feed hopper 500 (e.g., ...). Figure 4 (As shown). The support plate 510, the first limiting plate 520, and the second limiting plate 530 enclose a feeding channel, which communicates with the inner cavity of the furnace body 100. Optionally, the feed inlet of the feed hopper 500 is provided with a cover plate 740 for opening and closing the feed inlet.

[0056] The pressure plate 600 is located between the first limiting plate 520 and the second limiting plate 530 and is arranged opposite to the bearing surface of the bearing plate 510. The pressure plate 600 has two opposite connecting surfaces 610, which face the first limiting plate 520 and the second limiting plate 530 respectively.

[0057] The second motor 710 can be set in one or two as needed. When one is set, it can be set outside the first limiting plate 520 or outside the second limiting plate 530. When two are set, they can be set outside the first limiting plate 520 and outside the second limiting plate 530 respectively.

[0058] It should be noted that the purpose of setting the pressure plate 600 in the feed hopper 500 in this embodiment is to form a crushing device for crushing coal in the feed hopper 500, so that the coal can be crushed evenly when it is fed to the boiler, thereby making the shape and size of the coal entering the boiler more uniform and further improving the combustion efficiency of the coal.

[0059] Therefore, referring to Figure 5 As shown, the turntable 720 has a first surface 721 and a second surface 722 that are opposite to each other. The first surface 721 is fixedly connected to the drive shaft of the second motor 710, and the second surface 722 and the connecting surface 610 are in the feeding direction a of the feed hopper 500 (e.g., ...). Figure 4 As shown, the end of the second surface 722 that is relatively far from the side wall 102 is eccentrically connected, that is, the connecting shaft between the second surface 722 and the connecting surface 610 is misaligned with the central axis of the turntable 720.

[0060] One end of the movable connector 730 is axially connected to the inner side of the first limiting plate 520 or the inner side of the second limiting plate 530, and the other end of the movable connector 730 is axially connected to the end of the connecting surface 610 that is relatively close to the side wall 102 in the feeding direction a of the feed hopper 500.

[0061] Since an eccentric shaft connection is formed between the second surface 722 of the turntable 720 and the connecting surface 610 of the pressure plate 600, the second motor 710 will drive the pressure plate 600 to move together, so that the pressure plate 600 will continuously impact the coal on the bearing plate 510. As a result, the coal is crushed by the pressure plate 600 when it passes through the feed hopper 500, thereby making the shape and size of the coal entering the boiler more uniform and further improving the combustion efficiency of the coal.

[0062] For example, the first gap 601 formed between the end of the pressure plate 600 that is relatively far from the side wall 102 in the feeding direction a of the feed hopper 500 and the support plate 510 (e.g. Figure 4As shown, the second gap 602 formed between the end of the pressure plate 600 relatively close to the side wall 102 and the bearing plate 510 in the feeding direction a of the feed hopper 500 is larger than the second gap 602. Therefore, coal larger than the second gap 602 cannot pass through the second gap 602 before being crushed into particles smaller than the second gap 602 by the pressure plate 600, thereby further improving the uniformity of coal size.

[0063] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A coal-fired boiler, characterized in that, include: The furnace body (100) has a grid plate (200) installed on the inner side of its bottom wall (101); A first motor (300) is disposed on the outside of the bottom wall (101) of the furnace body (100), and the drive shaft of the first motor (300) passes through the bottom wall (101) and the grid plate (200); A stirring rod (400) is disposed on the side of the grid plate (200) facing away from the bottom wall (101) and is connected to the drive shaft of the first motor (300) for stirring the coal in the furnace body (100).

2. The coal-fired boiler according to claim 1, characterized in that, Also includes: A support column (110) is provided on the outside of the bottom wall (101) to support the furnace body (100); A base plate (120) is disposed between the support columns (110) for supporting the first motor (300).

3. The coal-fired boiler according to claim 1, characterized in that, Also includes: A feeding hopper (500) is disposed on the outside of the side wall (102) of the furnace body (100) for supplying coal into the furnace body (100). The feeding hopper (500) includes a bearing plate (510) for carrying coal and a first limiting plate (520) and a second limiting plate (530) respectively connected to opposite sides of the bearing plate (510). The first limiting plate (520) and the second limiting plate (530) are used to limit the feeding direction of the coal. The bearing plate (510), the first limiting plate (520) and the second limiting plate (530) enclose a feeding channel, which communicates with the inner cavity of the furnace body (100). A pressure plate (600) is located between the first limiting plate (520) and the second limiting plate (530) and is arranged opposite to the bearing surface of the bearing plate (510). The pressure plate (600) has two opposite connecting surfaces (610) facing the first limiting plate (520) and the second limiting plate (530) respectively. The second motor (710) is located outside the first limiting plate (520) and / or outside the second limiting plate (530); The turntable (720) has a first surface (721) and a second surface (722) that are opposite to each other. The first surface (721) is fixedly connected to the drive shaft of the second motor (710), and the second surface (722) and the connecting surface (610) are eccentrically connected at one end of the feed hopper (500) that is away from the side wall (102) in the feeding direction of the feed hopper (500). The movable connector (730) has one end axially connected to the inner side of the first limiting plate (520) or the inner side of the second limiting plate (530), and the other end of the movable connector (730) is axially connected to the end of the connecting surface (610) that is relatively close to the side wall (102) in the feeding direction of the feed hopper (500).

4. The coal-fired boiler according to claim 3, characterized in that, The feed inlet of the feed hopper (500) is provided with a cover plate (740), which is used to open and close the feed inlet; or, The first gap (601) formed between the end of the pressure plate (600) that is relatively far from the side wall (102) in the feeding direction of the feed hopper (500) and the bearing plate (510) is greater than the second gap (602) formed between the end of the pressure plate (600) that is relatively close to the side wall (102) in the feeding direction of the feed hopper (500) and the bearing plate (510).

5. The coal-fired boiler according to claim 1, characterized in that, A storage box (130) is provided on the outer side of the side wall (102) of the furnace body (100), and a burner (140) is provided inside the storage box (130). The burner (140) is used to ignite the coal blocks inside the furnace body (100).

6. The coal-fired boiler according to claim 5, characterized in that, An ash discharge pipe (150) is also provided on the outer side of the side wall (102). The ash discharge pipe (150) is connected to the inner cavity of the furnace body (100) for discharging ash. The ash outlet of the ash discharge pipe (150) is provided with a first cover (160), which is used to open and close the ash outlet.

7. The coal-fired boiler according to claim 1, characterized in that, The furnace body (100) has a plurality of ventilation pipes (170) arranged at equal intervals along the circumference of the side wall (102) on the outer side of the side wall (102). Each ventilation pipe (170) is connected to the inner cavity of the furnace body (100). Each ventilation pipe (170) has a second cover (180) at its opening, which is used to open and close the opening of the ventilation pipe (170).

8. The coal-fired boiler according to claim 7, characterized in that, The second cover (180) is connected to the edge of the opening of the ventilation pipe (170) by a flipping motion. The opening of the ventilation pipe (170) has a groove, and the second cover (180) is provided with a protrusion that engages and matches the groove.

9. The coal-fired boiler according to claim 1, characterized in that, Also includes: A water pipe (800) is disposed on the outside of the side wall (102) of the furnace body (100), and the water pipe (800) forms a heat-conducting connection with the furnace body (100); A water inlet port (810) is provided at one end of the water pipe (800) for connecting to a water source to supply water to the water pipe (800); A water outlet (820) is provided at the other end of the water pipe (800) for discharging water from the water pipe (800).

10. The coal-fired boiler according to claim 9, characterized in that, It also includes a protective shell (900), which is disposed on the outside of the side wall (102) of the furnace body (100); The water pipe (800) is installed inside the protective shell (900), and the water inlet (810) and the water outlet (820) are exposed outside the protective shell (900).

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