A material bin for a biomass boiler

Abstract

The utility model discloses a kind of material bins for biomass boiler, relate to biomass boiler technical field.A kind of material bin for biomass boiler, including fixed bottom plate, the top fixed connection of fixed bottom plate has boiler body and material bin main body, quantitative adjusting structure, quantitative adjusting structure is located on fixed bottom plate, quantitative adjusting structure includes feeding tank, quantitative tank, support plate and fixed plate, through the coordination of electric telescopic link, positioning cylinder and cross groove, quantitative volume can be flexibly adjusted, when replacing fuel type, adjusting fuel granularity or boiler changes combustion power according to load, start electric telescopic link, it can push positioning cylinder to slide in the through-hole of quantitative tank side, and four baffles and rotating shaft are respectively slidably connected with the cross groove inside on positioning cylinder, the length change that positioning cylinder extends into quantitative tank can directly change the cavity capacity between four baffles, to adjust the effective volume of single-time discharging, without replacing overall feeding structure due to fuel or load change.

Description

Technical Field

[0001] This utility model relates to the field of biomass boiler technology, and in particular to a feed bin for a biomass boiler. Background Technology

[0002] A biomass boiler is a boiler that uses biomass energy as fuel. Biomass boilers are characterized by multiple uses, low start-up heat transfer temperature, fast heat transfer speed, low installation cost, safe heating, and environmental friendliness. Chinese utility model patent, authorized announcement number "CN218721446U", discloses a biomass boiler storage bin. The biomass boiler storage bin provided by this utility model has a feeding trigger device. When the fuel is insufficient, the fuel on the movable plate disappears. Under the action of the toggle spring, the movable plate and connecting plate return to their original positions, thereby driving the movable rod to move back. The movable rod drives the trigger block to touch the trigger button, and the conveying component is activated to add fuel to the feeding bin. This can timely add fuel to the boiler to ensure sufficient fuel and thus ensure the normal operation of the biomass boiler.

[0003] In the above-mentioned technical solutions, the feeding box is mostly an integrated fixed structure. The internal cavity volume, baffle position and feeding channel size for controlling the feeding amount are all preset by the factory. It can only be adapted to a single type, particle size or combustion requirement of biomass fuel. When the fuel type is changed, the particle size changes, or the boiler needs to adjust the combustion power according to the load, the fixed metering structure cannot adjust the single feeding amount accordingly. If the single feeding amount is too large, the fuel will accumulate in the combustion chamber, causing incomplete combustion, reducing thermal efficiency and producing a large amount of ash and harmful gases, increasing cleaning costs and environmental pressure. If the single feeding amount is too small, the fuel supply will be insufficient, which will easily cause the flame to go out or the heating to be interrupted, seriously affecting the stable operation of the boiler, and even having a chain reaction on the production process. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a biomass boiler feed bin that can solve the problem that most feed bins are integrated fixed structures, and the internal cavity volume, baffle position and feed channel size for controlling the feed amount are all preset by the factory. They can only be adapted to a single type, particle size or combustion requirement of biomass fuel. When the fuel type is changed, the particle size changes, or the boiler needs to adjust the combustion power according to the load, the fixed quantitative structure cannot adjust the single feed amount accordingly. If the single feed amount is too large, the fuel will accumulate in the combustion chamber, causing incomplete combustion, reducing thermal efficiency and producing a large amount of ash and harmful gases, increasing cleaning costs and environmental pressure. If the single feed amount is too small, it will cause insufficient fuel supply, which will easily lead to flame extinguishing or heating interruption, seriously affecting the stable operation of the boiler, and even having a chain reaction effect on the production process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a biomass boiler feed silo, comprising: A fixed base plate is fixedly connected to the top of the boiler body and the silo body; A quantitative adjustment structure is located on a fixed base plate; The quantitative adjustment structure includes a feeding box, a metering box, a support plate, and a fixing plate. The support plate is fixedly connected to the side of the boiler body near the main body of the silo. The metering box is fixedly connected to the side of the support plate away from the boiler body. The bottom end of the metering box is connected to the interior of the boiler body. The feeding box is fixedly connected to the top of the metering box and is connected to its interior. The fixing plate is fixedly connected to one side of the metering box. A through hole is opened on the side of the metering box near the fixing plate. A positioning cylinder is slidably connected inside the through hole. An electric telescopic rod is installed on the side of the fixing plate away from the metering box. The telescopic end of the electric telescopic rod slides into the interior of the fixing plate and is rotatably connected to the positioning cylinder. A cross groove is opened on the side of the positioning cylinder near the metering box.

[0006] Preferably, the quantitative adjustment structure further includes a stepper motor and a rotating shaft. The stepper motor is installed on the side of the quantitative box away from the fixed plate. The output end of the stepper motor extends into the interior of the quantitative box and is fixedly connected to the rotating shaft. The rotating shaft is rotatably connected to the interior of the quantitative box, and four baffles are fixedly connected to the outer surface of the rotating shaft.

[0007] Preferably, a sealing ring is fixedly connected to the side of the metering box near the fixed plate, and the outer surface of the positioning cylinder is in close contact with the inside of the sealing ring.

[0008] Preferably, a conveying cylinder is fixedly installed on the top of the fixed base plate, the inlet end of the conveying cylinder is fixedly connected to the bottom end of the silo body, and the outlet end of the conveying cylinder is fixedly connected to the feeding box.

[0009] Preferably, a drive motor is installed on the top of the conveying cylinder, and the output end of the drive motor extends into the interior of the conveying cylinder and is fixedly connected to a conveying screw, which is rotatably connected to the interior of the conveying cylinder.

[0010] Preferably, the inlet end of the conveying cylinder is connected to the bottom end of the silo body, and the outlet end of the conveying cylinder is connected to the inside of the feeding box.

[0011] Preferably, a control box is installed on the top of the fixed base plate.

[0012] Preferably, the fixing plate has an "L" shaped structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The biomass boiler feed hopper can flexibly adjust the quantitative volume through the coordinated operation of the electric telescopic rod, the positioning cylinder, and the cross groove. When changing the fuel type, adjusting the fuel particle size, or changing the combustion power of the boiler according to the load, the electric telescopic rod is activated, which can push the positioning cylinder to slide in the through hole on one side of the quantitative box. The four baffles and the rotating shaft are respectively slidably connected to the inside of the cross groove on the positioning cylinder. The change in the length of the positioning cylinder extending into the quantitative box can directly change the cavity capacity between the four baffles, thereby adjusting the effective volume of a single feeding, without having to change the overall feeding structure due to changes in fuel or load. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the quantitative box structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the conveying cylinder of this utility model; Figure 4 This is a schematic cross-sectional view of the feeding box of this utility model; Figure 5 This is a schematic diagram of the baffle structure of this utility model; Figure 6 This is a schematic diagram of the positioning cylinder structure of this utility model.

[0015] Reference numerals in the attached drawings: 1. Fixed base plate; 2. Boiler body; 3. Main body of silo; 4. Conveying cylinder; 5. Drive motor; 6. Feeding box; 7. Fixed plate; 8. Electric telescopic rod; 9. Positioning cylinder; 10. Control box; 11. Metering box; 12. Stepper motor; 13. Support plate; 14. Baffle; 15. Sealing ring; 16. Through hole; 17. Rotating shaft; 18. Conveying screw; 19. Cross groove. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Fixed base plate 1: As the basic support structure of the entire device, it is used to fix and connect the boiler body 2, the hopper body 3, the conveying cylinder 4 and the control box 10, to ensure the stability of each component during operation and to avoid positional displacement due to vibration. Boiler body 2: The core combustion component of the device, used to receive biomass fuel delivered by metering box 11 and burn it to provide heat for subsequent energy needs; at the same time, a support plate 13 is fixedly connected to the side of the boiler body 3 near the silo body 3 to provide an installation support point for metering box 11, and the interior is connected to the bottom of metering box 11 to facilitate receiving metered fuel. The main body of the silo 3 is a storage component for biomass fuel, used to pre-store fuel to be supplied; its bottom end is fixedly connected to the feed end of the conveying cylinder 4 and internally connected, so that the stored fuel can be transported into the conveying cylinder 4 to provide a fuel source for subsequent feeding. Conveying cylinder 4: Fuel conveying channel, its inlet end is fixedly connected to the bottom end of the silo body 3 and internally connected, and its outlet end is fixedly connected to the feeding box 6 and internally connected; a conveying screw 18 is rotatably connected inside, which can continuously convey the fuel in the silo body 3 to the feeding box 6 under the drive of the drive motor 5, realizing the initial conveying of fuel. Drive motor 5: Installed on the top of the conveying cylinder 4, it provides power for fuel conveying; its output end extends into the inside of the conveying cylinder 4 and is fixedly connected to the conveying screw 18. After starting, it can drive the conveying screw 18 to rotate, thereby driving the fuel to move inside the conveying cylinder 4. Feeding box 6: A transfer component for fuel transportation, fixedly connected to the top of metering box 11 and internally connected; used to receive fuel from the conveying cylinder 4, and through its own connection structure with metering box 11, to allow the fuel to fall into metering box 11 due to gravity, thus realizing the transition of fuel from the transportation link to the metering link. Fixed plate 7: It has an "L" shaped structure and is fixedly connected to one side of the metering box 11; an electric telescopic rod 8 is installed on the side away from the metering box 11, which is used to fix and support the electric telescopic rod 8, and at the same time provides a sliding extension channel for the telescopic end of the electric telescopic rod 8 to ensure that the electric telescopic rod 8 can stably push the positioning cylinder 9. Electric telescopic rod 8: Installed on the side of the fixed plate 7 away from the metering box 11, its telescopic end slides into the interior of the fixed plate 7 and is rotatably connected to the positioning cylinder 9; through its own telescopic action, it can push the positioning cylinder 9 to slide in the through hole 16 on one side of the metering box 11, thereby changing the insertion length of the positioning cylinder 9 in the metering box 11, and providing power for adjusting the single feeding amount. Positioning cylinder 9: It is slidably connected in the through hole 16 on one side of the metering box 11, and its outer surface is in close contact with the inside of the sealing ring 15. A cross groove 19 is provided on the side near the metering box 11, and it is rotatably connected to the telescopic end of the electric telescopic rod 8. Control box 10: Installed on the top of the fixed base plate 1, it is the control core of the device; it can send control signals to the stepper motor 12 to control the start and rotation angle of the stepper motor 12; it can also set an automatic cycle program to enable the entire quantitative feeding process to achieve continuous and stable automatic operation. Metering box 11: It is fixedly connected to the side of the support plate 13 away from the boiler body 2. Its bottom end is connected to the inside of the boiler body 2, and its top end is connected to the inside of the feeding box 6. A through hole 16 is opened on the side near the fixed plate 7 and a sealing ring 15 is fixedly connected thereto. Stepper motor 12: Installed on the side of metering box 11 away from fixed plate 7, its output end extends into the metering box 11 and is fixedly connected to rotating shaft 17; after receiving the control signal from control box 10, it can drive rotating shaft 17 to rotate at a fixed angle, thereby driving four baffles 14 to rotate synchronously, realizing the switching of the fuel-filled chamber to connect with boiler body 2 and the empty chamber to align with the feed box 6 discharge port, thus completing the quantitative delivery of fuel; Support plate 13: It is fixedly connected to the side of the boiler body 2 near the hopper body 3, and the metering box 11 is fixedly connected to the side away from the boiler body 2. Its main function is to provide stable installation support for the metering box 11, so that the metering box 11 can be kept in a suitable position in communication with the feeding box 6 and the boiler body 2, and ensure the smooth flow of fuel metering and transportation. Baffles 14: There are four in total, which are fixedly connected to the outer surface of the rotating shaft 17 and rotate synchronously with the rotating shaft 17; they can divide the inside of the metering box 11 into four equal-volume chambers for storing fuel falling from the feeding box 6; at the same time, the four baffles 14 are slidably connected to the cross grooves 19 of the positioning cylinder 9, and when the positioning cylinder 9 slides to adjust the extension length, it can cooperate to change the chamber capacity and realize the adjustment of the single feeding amount; Sealing ring 15: It is fixedly connected to the side of the metering box 11 near the fixed plate 7, and its interior is in contact with the outer surface of the positioning cylinder 9. Its main function is to enhance the sealing between the metering box 11 and the positioning cylinder 9, prevent the fuel in the metering box 11 from leaking from the gap between the positioning cylinder 9 and the through hole 16, and ensure the accuracy of metering. Through hole 16: It is opened on the side of the metering box 11 near the fixed plate 7, and the positioning cylinder 9 is slidably connected inside; it provides a sliding guide channel for the positioning cylinder 9, so that the positioning cylinder 9 can slide stably inside and outside the metering box 11 under the push of the electric telescopic rod 8, ensuring the stability of the metering adjustment process; Rotating shaft 17: Rotatably connected inside the metering box 11, one end is fixedly connected to the output end of the stepper motor 12, and four baffles 14 are fixedly connected to the outer surface and are slidably connected to the cross groove 19 of the positioning cylinder 9. Conveying screw 18: Rotatably connected inside the conveying cylinder 4, with one end fixedly connected to the output end of the drive motor 5. When it rotates under the drive of the drive motor 5, it can continuously push the fuel at the feed end of the conveying cylinder 4 to the discharge end and the connection point with the feeding box 6, thereby realizing the conveying of fuel from the silo body 3 to the feeding box 6. Cross groove 19: It is formed on the side of the positioning cylinder 9 near the metering box 11, and is slidably connected to the four baffles 14 and the rotating shaft 17 respectively.

[0021] Example 1: like Figure 1-6 As shown, if it is necessary to adjust the single quantitative feeding amount, start the electric telescopic rod 8. The electric telescopic rod 8 pushes the positioning cylinder 9 to slide in the through hole 16 on one side of the quantitative box 11. Since the four baffles 14 and the rotating shaft 17 are respectively slidably connected to the inside of the cross groove 19, the outer surface of the positioning cylinder 9 is in close contact with the inside of the sealing ring 15 to ensure sealing. The sliding of the positioning cylinder 9 can change its extension length in the quantitative box 11, thereby adjusting the effective volume of single feeding by changing the cavity capacity between the four baffles 14, and realizing the precise adjustment of the single feeding amount.

[0022] Example 2: like Figure 5 As shown, the sealing ring 15 can fill the gap between the positioning cylinder 9 and the through hole 16, preventing biomass fuel dust or fine particles inside the metering box 11 from leaking out of the gap. At the same time, it can also prevent external impurities from entering the metering box 11 through the gap, ensuring the cleanliness and sealing of the internal environment of the metering box 11.

[0023] Furthermore, when using this device, biomass fuel is pre-stored inside the main body 3 of the silo. When the boiler body 2 needs fuel replenishment, the drive motor 5 installed on the top of the conveying cylinder 4 is started. The drive motor 5 drives the conveying screw 18 to rotate. The rotating conveying screw 18 will continuously transport the fuel in the main body 3 of the silo to the inside of the conveying cylinder 4 and push it into the feeding box 6 along the cavity of the conveying cylinder 4 to complete the initial conveying.

[0024] Fuel entering the feeding box 6 will fall into the metering box 11, which is connected to its interior, due to gravity. First, the control box 10 sends a control signal to the stepper motor 12 installed on the side of the metering box 11 away from the fixed plate 7 to start it. The stepper motor 12 drives the rotating shaft 17 to rotate. The four baffles 14 fixedly connected to the outer surface of the rotating shaft 17 rotate synchronously with it. The four baffles 14 divide the interior of the metering box 11 into four equal-volume chambers. After the fuel falls into one of the chambers, the stepper motor 12 drives the rotating shaft 17 to rotate at a fixed angle so that the chamber containing the fuel is aligned with the opening at the bottom of the metering box 11 that is connected to the interior of the boiler body 2. At the same time, the other empty chamber is aligned with the feeding port of the feeding box 6, realizing the metered storage and switching of fuel in separate chambers.

[0025] If it is necessary to adjust the single-time quantitative feeding amount, start the electric telescopic rod 8. The electric telescopic rod 8 pushes the positioning cylinder 9 to slide in the through hole 16 on one side of the quantitative box 11. Since the four baffles 14 and the rotating shaft 17 are respectively slidably connected to the inside of the cross groove 19, the outer surface of the positioning cylinder 9 is in close contact with the inside of the sealing ring 15 to ensure sealing. The sliding of the positioning cylinder 9 can change its insertion length in the quantitative box 11, thereby adjusting the effective volume of single feeding by changing the cavity capacity between the four baffles 14, and realizing the precise adjustment of the single feeding amount.

[0026] The fuel, after being metered by the metering box 11, falls directly into the boiler body 2 through the opening at the bottom of the metering box 11 that connects to the inside of the boiler body 2, providing fuel for boiler combustion and completing a complete metering feeding process. The above process can be set to an automatic cycle program through the control box 10 to achieve continuous and stable metering feeding.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A biomass boiler feed silo, characterized in that, include: A fixed base plate (1) is fixedly connected to the top of the fixed base plate (1) with the boiler body (2) and the silo body (3). A quantitative adjustment structure is located on a fixed base plate (1); The quantitative adjustment structure includes a feeding box (6), a metering box (11), a support plate (13), and a fixing plate (7). The support plate (13) is fixedly connected to the side of the boiler body (2) near the silo body (3). The metering box (11) is fixedly connected to the side of the support plate (13) away from the boiler body (2). The bottom of the metering box (11) is connected to the interior of the boiler body (2). The feeding box (6) is fixedly connected to the top of the metering box (11) and is connected to its interior. The fixed plate (7) is fixedly connected to one side of the metering box (11). The metering box (11) has a through hole (16) on the side close to the fixed plate (7). A positioning cylinder (9) is slidably connected inside the through hole (16). An electric telescopic rod (8) is installed on the side of the fixed plate (7) away from the metering box (11). The telescopic end of the electric telescopic rod (8) slides into the interior of the fixed plate (7) and is rotatably connected to the positioning cylinder (9). A cross groove (19) is opened on the side of the positioning cylinder (9) close to the metering box (11).

2. The biomass boiler feed silo according to claim 1, characterized in that: The quantitative adjustment structure also includes a stepper motor (12) and a rotating shaft (17), with the stepper motor (12) installed on the side of the quantitative box (11) away from the fixed plate (7); The output end of the stepper motor (12) extends into the interior of the metering box (11) and is fixedly connected to the rotating shaft (17). The rotating shaft (17) is rotatably connected inside the metering box (11), and four baffles (14) are fixedly connected to the outer surface of the rotating shaft (17).

3. The biomass boiler feed silo according to claim 1, characterized in that: The metering box (11) is fixedly connected to a sealing ring (15) on the side near the fixing plate (7), and the outer surface of the positioning cylinder (9) is in contact with the inside of the sealing ring (15).

4. The biomass boiler feed silo according to claim 1, characterized in that: The top of the fixed base plate (1) is fixedly installed with a conveying cylinder (4), the inlet end of the conveying cylinder (4) is fixedly connected to the bottom end of the silo body (3), and the outlet end of the conveying cylinder (4) is fixedly connected to the feeding box (6).

5. A biomass boiler feed silo according to claim 4, characterized in that: A drive motor (5) is installed on the top of the conveying cylinder (4). The output end of the drive motor (5) rotates and extends into the interior of the conveying cylinder (4) and is fixedly connected to a conveying screw (18). The conveying screw (18) is rotatably connected to the interior of the conveying cylinder (4).

6. A biomass boiler feed silo according to claim 4, characterized in that: The feed end of the conveying cylinder (4) is connected to the bottom of the silo body (3), and the discharge end of the conveying cylinder (4) is connected to the inside of the feeding box (6).

7. A biomass boiler feed silo according to claim 1, characterized in that: A control box (10) is installed on the top of the fixed base plate (1).

8. A biomass boiler feed silo according to claim 1, characterized in that: The fixing plate (7) has an "L" shaped structure.

Images