Biomass pellet chain grate steam boiler

Abstract

This utility model discloses a biomass pellet chain grate steam boiler, including a boiler body. A first grate shaft and a second grate shaft are respectively installed in the inner cavity of the boiler body. One end of the first grate shaft is connected to the output end of a servo motor. Grate mounting rollers are fixedly installed on the first and second grate shafts respectively. A chain grate is sleeved between the two grate mounting rollers. Ash discharge shafts are symmetrically installed at the bottom of the boiler body, and conveying rollers are symmetrically installed on the ash discharge shafts. An ash discharge steel belt is sleeved between the two conveying rollers. Beneficial effects: This utility model, with its boiler body, chain grate, ash discharge steel belt, and ash discharge door, utilizes a rotating chain grate to prevent the accumulation of ash generated during biomass combustion and can automatically collect the generated ash, facilitating subsequent unified cleaning and transportation. This reduces the frequency of opening and closing the ash discharge port, reduces energy loss, and enhances practicality.

Description

Technical Field

[0001] This utility model relates to the field of biomass steam boiler technology, specifically to a biomass pellet chain grate steam boiler. Background Technology

[0002] Biomass boilers are a type of boiler that uses biomass energy as fuel. They are classified into biomass steam boilers, biomass hot water boilers, biomass hot air furnaces, biomass thermal oil furnaces, vertical biomass boilers, and horizontal biomass boilers. Biomass boilers are widely used in small and medium-sized production enterprises, mainly because their compact structure, small footprint, and low fuel cost make them suitable for steam supply in small and medium-sized production operations.

[0003] The prior art discloses a biomass steam boiler with application number CN202420277103.1. This invention requires a mechanized structure to drive the grate in intermittent rotation to shake off accumulated ash, preventing excessive ash buildup from affecting the boiler's normal operation. However, this structure still requires frequent opening and closing of the feed port and ash discharge port for biomass fuel feeding and ash removal, which is not only time-consuming and labor-intensive, but also causes significant heat loss from the furnace, resulting in energy waste and increased energy consumption. Therefore, its practicality is relatively limited. To address these shortcomings, those skilled in the art have proposed a biomass pellet chain grate steam boiler. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a biomass pellet chain grate steam boiler, which features the advantages of using a rotating chain grate to prevent the accumulation of ash generated during biomass combustion, and the ability to automatically collect the generated ash for easy subsequent unified cleaning and transportation. This reduces the frequency of opening and closing the ash discharge port, minimizes energy loss, and enhances practicality, thereby solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the advantages of using a rotating chain grate to prevent ash accumulation from biomass combustion and to automatically collect the generated ash for easy subsequent unified cleaning, reducing the frequency of ash discharge port opening and closing, minimizing energy loss, and enhancing practicality, the specific technical solution adopted by this utility model is as follows: A biomass pellet chain grate steam boiler includes a boiler body. A first grate shaft and a second grate shaft are respectively installed in the inner cavity of the boiler body. One end of the first grate shaft is connected to the output end of a servo motor. Grate mounting rollers are fixedly installed on the first grate shaft and the second grate shaft respectively. A chain grate is sleeved between the two grate mounting rollers. Ash discharge shafts are symmetrically installed at the bottom of the boiler body, and conveying rollers are symmetrically installed on the ash discharge shafts. Ash discharge steel belts are sleeved between the two conveying rollers. A third pulley is fixedly installed at one end of the first grate shaft, and a fourth pulley is fixedly installed at one end of one side of the ash discharge shaft. A second transmission belt is sleeved between the third pulley and the fourth pulley. An ash receiving steel box is placed on one side of the bottom of the boiler body.

[0008] Furthermore, a feeding hopper is fixedly installed on one side of the boiler body, and a feeding shaft is installed in the center of the feeding hopper. A feeding roller is fixedly installed on the feeding shaft. Feeding grooves are symmetrically opened on the feeding roller. Inlet and outlet are symmetrically opened inside the feeding hopper. A storage hopper is installed in connection with the inlet and outlet. A first pulley is fixedly installed at one end of the second grate shaft, and a second pulley is fixedly installed at one end of the feeding shaft. A first transmission belt is sleeved between the first pulley and the second pulley.

[0009] Furthermore, a vaporization pot is fixedly installed in the inner cavity of the boiler furnace, and a water inlet pipe is connected to one side of the inner cavity of the vaporization pot, while a steam outlet pipe is connected to the other side of the inner cavity of the vaporization pot. An igniter is installed in the inner cavity of the boiler furnace.

[0010] Furthermore, an ash discharge port is provided on one side of the boiler body, and an ash discharge door is connected and installed on the ash discharge port.

[0011] Furthermore, a control panel is installed on the outer wall of the boiler furnace, and the control panel is electrically connected to the servo motor and the igniter.

[0012] Furthermore, a flue pipe is installed at the top of the boiler's internal cavity.

[0013] Furthermore, the cross-sectional shape of the boiler body is convex.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a biomass pellet chain grate steam boiler, which has the following beneficial effects:

[0016] (1) This utility model is equipped with a boiler body, a chain grate, a steel ash discharge belt, and an ash discharge door. The inner cavity of the boiler body is fitted with a first grate shaft and a second grate shaft. One end of the first grate shaft is connected to the output end of a servo motor. Grate mounting rollers are fixedly installed on the first and second grate shafts respectively. A chain grate is sleeved between the two grate mounting rollers. A gasification pot is fixedly installed in the inner cavity of the boiler body. A water inlet pipe is connected to one side of the gasification pot's inner cavity, and a steam outlet pipe is connected to the other side. An igniter is installed in the boiler body. When biomass fuel is fed onto the chain grate, the servo motor drives the first grate shaft, the second grate shaft, the grate mounting roller, and the chain grate to rotate. The igniter ignites the biomass fuel, burning it to heat the gasification pot and obtain high-temperature steam. The generated flue gas can be discharged through the exhaust pipe. Furthermore, the boiler body... Symmetrically installed at the bottom of the boiler body are ash discharge shafts, with symmetrically installed conveyor rollers on the shafts. An ash discharge steel belt is sleeved between the two conveyor rollers. A third pulley is fixedly installed at one end of the first grate shaft, and a fourth pulley is fixedly installed at one end of the ash discharge shaft. A second drive belt is sleeved between the third and fourth pulleys. Therefore, when the first grate shaft rotates, it drives the ash discharge shaft to rotate. The ash produced during biomass combustion falls onto the ash discharge steel belt through the chain grate. As the ash discharge steel belt rotates, it transports the ash to the inner cavity of an ash collection box placed on one side of the boiler body for collection. This prevents ash accumulation from affecting biomass combustion and facilitates subsequent unified cleaning. An ash discharge port is opened on one side wall of the boiler body, and an ash discharge door is installed at the ash discharge port. When the ash collection box is full of ash, the user can open the ash discharge door to quickly remove and place the ash collection box, making ash cleaning more convenient and faster, and more practical.

[0017] (2) This utility model is equipped with a feeding bin and a feeding roller. The feeding bin is fixedly installed on one side of the boiler body, and a feeding shaft is installed in the center of the feeding bin. A feeding roller is fixedly installed on the feeding shaft. Feeding grooves are symmetrically opened on the feeding roller. The feeding bin has symmetrically opened inlets and outlets, and a storage hopper is installed at the top of the inlet and outlet. On the other hand, a first pulley is fixedly installed at one end of the second grate shaft, and a second pulley is fixedly installed at one end of the feeding shaft. A first transmission belt is sleeved between the first pulley and the second pulley, so the second grate shaft rotates. The automatic feeding mechanism can drive the feeding shaft and feeding roller to rotate. The biomass fuel stored in the storage hopper can be filled into the feeding trough through the inlet and outlet. Then, as the feeding roller rotates, the biomass fuel falling into the feeding trough can be evenly placed on the surface of the chain grate. Then, as the chain grate rotates, it enters the inner cavity of the boiler furnace for combustion. This realizes the automatic feeding of biomass pellet fuel, eliminating the need for manual feeding by workers. It is more convenient to use and eliminates the need for a feeding port, greatly reducing energy loss caused by biomass fuel feeding and improving the energy utilization efficiency of the biomass steam boiler, making it more practical. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a biomass pellet chain grate steam boiler according to an embodiment of the present utility model;

[0020] Figure 2 This is a front view of a biomass pellet chain grate steam boiler according to an embodiment of the present utility model;

[0021] Figure 3 According to the embodiments of this utility model Figure 1 Enlarged view of point A;

[0022] Figure 4 According to the embodiments of this utility model Figure 1 Enlarged view of point B;

[0023] Figure 5 This is a perspective view of the first grate shaft, second grate shaft, feeding shaft, and ash discharge shaft of a biomass pellet chain grate steam boiler according to an embodiment of the present invention.

[0024] In the picture:

[0025] 1. Boiler body; 2. Feeding hopper; 3. Storage hopper; 4. Water inlet pipe; 5. Gasification boiler body; 6. Exhaust pipe; 7. Steam outlet pipe; 8. Ash discharge shaft; 9. Ash discharge steel belt; 10. Chain grate; 11. Ignition device; 12. Ash receiving steel box; 13. Control panel; 14. First grate shaft; 15. Second grate shaft; 16. Feeding shaft; 17. First pulley; 18. Second pulley; 19. First drive belt; 20. Third pulley; 21. Fourth pulley; 22. Second drive belt; 23. Ash discharge door; 24. Feeding roller; 25. Feeding trough; 26. Inlet and outlet; 27. Grate mounting roller; 28. Ash discharge port; 29. ​​Conveying roller; 30. Servo motor. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a biomass pellet chain grate steam boiler is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-5 As shown, the biomass pellet chain grate steam boiler according to an embodiment of the present invention includes a boiler body 1. A first grate shaft 14 and a second grate shaft 15 are respectively installed inside the boiler body 1. One end of the first grate shaft 14 is connected to the output end of a servo motor 30. Grate mounting rollers 27 are fixedly installed on the first grate shaft 14 and the second grate shaft 15 respectively. A chain grate 10 is sleeved between the two grate mounting rollers 27. Ash discharge shafts 8 are symmetrically installed at the bottom of the inner cavity of the boiler body 1, and conveying rollers 29 are symmetrically installed on the ash discharge shafts 8. Between the two conveying rollers 29... A steel belt 9 for ash discharge is fitted onto the first grate shaft 14. A third pulley 20 is fixedly installed at one end of the first grate shaft 14, and a fourth pulley 21 is fixedly installed at one end of the ash discharge shaft 8 on one side. A second transmission belt 22 is fitted between the third pulley 20 and the fourth pulley 21. An ash collection steel box 12 is placed on one side of the bottom of the inner cavity of the boiler body 1. The rotating chain grate 10 can prevent the accumulation of ash generated by biomass combustion and can automatically collect the generated ash, which is convenient for subsequent unified cleaning and transportation. This reduces the opening and closing frequency of the ash discharge port 28, reduces energy loss, and is more practical.

[0029] In one embodiment, a feeding bin 2 is fixedly installed on one side of the boiler body 1, and a feeding shaft 16 is installed in the center of the feeding bin 2. A feeding roller 24 is fixedly installed on the feeding shaft 16, and feeding grooves 25 are symmetrically opened on the feeding roller 24. An inlet and outlet 26 are symmetrically opened inside the feeding bin 2, and a storage hopper 3 is installed in connection with the inlet and outlet 26. A first pulley 17 is fixedly installed at one end of the second grate shaft 15, and a second pulley 18 is fixedly installed at one end of the feeding shaft 16. A first transmission belt 19 is sleeved between the first pulley 17 and the second pulley 18, which realizes the automatic feeding of biomass pellet fuel without the need for manual feeding by workers. It is more convenient to use, and there is no need to set up a feeding port, which greatly reduces the energy damage caused by biomass fuel feeding, improves the energy utilization efficiency of biomass steam boiler, and makes it more practical.

[0030] In one embodiment, a vaporization pot 5 is fixedly installed inside the boiler body 1, and a water inlet pipe 4 is connected to one side of the inner cavity of the vaporization pot 5, while a steam outlet pipe 7 is connected to the other side of the inner cavity of the vaporization pot 5. An igniter 11 is installed inside the boiler body 1, which burns biomass fuel to heat the vaporization pot 5 to obtain high-temperature steam.

[0031] In one embodiment, an ash discharge port 28 is provided on one side of the boiler body 1, and an ash discharge door 23 is connected and installed on the ash discharge port 28, which facilitates the user to take and put the ash collection steel box 12.

[0032] In one embodiment, a control panel 13 is installed on the outer wall of the boiler body 1, and the control panel 13 is electrically connected to the servo motor 30 and the igniter 11. The control circuit of the control panel 13 can be implemented by simple programming by those skilled in the art, which is common knowledge in the art. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0033] In one embodiment, a flue pipe 6 is installed at the top of the inner cavity of the boiler body 1, which serves to exhaust the flue gas generated by the combustion of biomass fuel.

[0034] In one embodiment, the cross-sectional shape of the boiler body 1 is convex.

[0035] Working Principle: This utility model is equipped with a boiler body 1, a chain grate 10, an ash discharge steel belt 9, and an ash discharge door 23. A first grate shaft 14 and a second grate shaft 15 are respectively installed inside the boiler body 1. One end of the first grate shaft 14 is connected to the output end of a servo motor 30. Grate mounting rollers 27 are fixedly installed on the first grate shaft 14 and the second grate shaft 15, respectively. A chain grate 10 is sleeved between the two grate mounting rollers 27. A gasification pot 5 is fixedly installed inside the boiler body 1. A water inlet pipe 4 is connected to one side of the inner cavity of the gasification pot 5, and a steam outlet pipe 7 is connected to the other side of the inner cavity of the gasification pot 5. An igniter 11 is installed inside the boiler body 1. When biomass fuel is fed onto the chain grate 10, the igniter 11 ignites. The servo motor 30 can drive the first grate shaft 14, the second grate shaft 15, the grate mounting roller 27, and the chain grate 10 to rotate. The biomass fuel is ignited using the igniter 11, and the combustion of the biomass fuel heats the gasification boiler 5 to obtain high-temperature steam. The generated flue gas can be discharged through the exhaust pipe 6. On the other hand, ash discharge shafts 8 are symmetrically installed at the bottom of the inner cavity of the boiler body 1, and conveying rollers 29 are symmetrically installed on the ash discharge shafts 8. An ash discharge steel belt 9 is sleeved between the two conveying rollers 29. A third pulley 20 is fixedly installed at one end of the first grate shaft 14, and a fourth pulley 21 is fixedly installed at one end of the ash discharge shaft 8. A second transmission belt 22 is sleeved between the third pulley 20 and the fourth pulley 21. Therefore, when the first grate... When shaft 14 rotates, it drives ash discharge shaft 8 to rotate. Ash produced during biomass fuel combustion falls onto ash discharge steel belt 9 via chain grate 10. As ash discharge steel belt 9 rotates, it transports the ash to the inner cavity of ash collection box 12 located on one side of the boiler body 1 for collection. This prevents ash accumulation from affecting biomass combustion and facilitates subsequent unified cleaning. An ash discharge port 28 is provided on one side wall of the boiler body 1, and an ash discharge door 23 is installed on the ash discharge port 28. When the ash collection box 12 is full of ash, the user can open the ash discharge door 23 to quickly remove and place the ash from the ash collection box 12, making ash cleaning more convenient and faster, and more practical. In addition, this utility model is equipped with a feeding bin 2 and a feeding roller 24, located on one side of the boiler body 1. A feeding hopper 2 is fixedly installed, with a feeding shaft 16 installed in the center of the feeding hopper 2. A feeding roller 24 is fixedly installed on the feeding shaft 16. Feeding grooves 25 are symmetrically opened on the feeding roller 24. The feeding hopper 2 has symmetrically opened inlet and outlet 26, and the top inlet and outlet 26 are connected to a storage hopper 3. On the other hand, a first pulley 17 is fixedly installed at one end of a second grate shaft 15, and a second pulley 18 is fixedly installed at one end of the feeding shaft 16. A first transmission belt 19 is sleeved between the first pulley 17 and the second pulley 18. Therefore, when the second grate shaft 15 rotates, it can drive the feeding shaft 16 and the feeding roller 24 to rotate. The biomass fuel stored in the storage hopper 3 can be filled into the feeding grooves 25 through the inlet and outlet 26.Then, as the feeding roller 24 rotates, the biomass fuel falling into the feeding trough 25 can be evenly distributed onto the surface of the chain grate 10. Then, as the chain grate 10 rotates, it enters the inner cavity of the boiler body 1 for deep combustion, thus realizing automatic feeding of biomass pellet fuel. This eliminates the need for manual feeding, making it more convenient to use. Furthermore, the elimination of the need for a feeding port greatly reduces energy loss during biomass fuel feeding, improves the energy utilization efficiency of the biomass steam boiler, and enhances its practicality.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Biomass pellet chain grate steam boiler comprising a boiler body (1), characterized in that, The boiler body (1) is equipped with a first grate shaft (14) and a second grate shaft (15) respectively. One end of the first grate shaft (14) is connected to the output end of a servo motor (30). Grate mounting rollers (27) are fixedly installed on the first grate shaft (14) and the second grate shaft (15). A chain grate (10) is sleeved between the two grate mounting rollers (27). Ash discharge shafts (8) are symmetrically installed at the bottom of the boiler body (1). (8) Symmetrically mounted conveyor rollers (29) are connected between the two conveyor rollers (29) and a ash discharge steel belt (9) is sleeved between them. A third pulley (20) is fixedly installed at one end of the first grate shaft (14) and a fourth pulley (21) is fixedly installed at one end of the ash discharge shaft (8). A second transmission belt (22) is sleeved between the third pulley (20) and the fourth pulley (21). An ash receiving steel box (12) is placed on one side of the bottom of the inner cavity of the boiler body (1).

2. The biomass pellet chain grate steam boiler according to claim 1, characterized in that, A feeding bin (2) is fixedly installed on one side of the boiler body (1), and a feeding shaft (16) is installed in the center of the feeding bin (2). A feeding roller (24) is fixedly installed on the feeding shaft (16). Feeding grooves (25) are symmetrically opened on the feeding roller (24). Inlet and outlet (26) are symmetrically opened inside the feeding bin (2). A storage hopper (3) is connected to the inlet and outlet (26). A first pulley (17) is fixedly installed at one end of the second grate shaft (15), and a second pulley (18) is fixedly installed at one end of the feeding shaft (16). A first transmission belt (19) is sleeved between the first pulley (17) and the second pulley (18).

3. The biomass pellet chain grate steam boiler according to claim 1, characterized in that, A vaporization pot body (5) is fixedly installed in the inner cavity of the boiler body (1), and a water inlet pipe (4) is connected to one side of the inner cavity of the vaporization pot body (5), and a steam outlet pipe (7) is connected to the other side of the inner cavity of the vaporization pot body (5). An igniter (11) is installed inside the boiler body (1).

4. The biomass pellet chain grate steam boiler according to claim 1, characterized in that, The boiler body (1) has an ash discharge port (28) on one side, and an ash discharge door (23) is connected and installed on the ash discharge port (28).

5. The biomass pellet chain-grate steam boiler according to claim 1, wherein, The boiler body (1) is equipped with a control panel (13) on its outer wall, and the control panel (13) is electrically connected to the servo motor (30) and the igniter (11).

6. The biomass pellet chain grate steam boiler according to claim 1, characterized in that, The top of the inner cavity of the boiler body (1) is connected to a flue pipe (6).

7. The biomass pellet chain-grate steam boiler according to claim 1, wherein, The cross-sectional shape of the boiler body (1) is convex.

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