A biomass boiler material controller

Abstract

This utility model relates to the field of biomass boiler technology, and in particular to a biomass boiler feed controller. The utility model provides a biomass boiler feed controller, comprising: a storage hopper; a bottom abutment plate; sliders on both sides of the abutment plate; a groove on the inner sidewall of the bottom of the storage hopper; sliders engaging with the groove; a first connecting frame on the sidewall of the storage hopper; a first motor mounted on the first connecting frame; one end of the first motor's shaft connected to a lead screw shaft; the other end of the lead screw shaft connected to a lead screw support; the lead screw support is located on the sidewall of the bottom of the storage hopper, away from the groove; a bushing screwed onto the lead screw shaft; and a connecting block on the bottom surface of the abutment plate, connected to the bushing. This utility model solves the problem of difficulty in controlling and adjusting the total amount of biomass fuel added when changing biomass fuel or facing different load demands in a biomass boiler.

Description

Technical Field

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

[0002] Biomass boilers are a type of boiler that uses biomass energy as fuel. Due to limitations in electricity, natural gas supply, and gas pipelines, it is impossible to convert all coal-fired boilers in my country to electric or gas-fired boilers. Biomass boilers, with their lower price and operating costs, are more readily accepted by users and thus more widely adopted, filling this gap.

[0003] However, during the use of biomass boilers, due to the significant differences in particle size, moisture content, and calorific value of biomass fuel, the total amount of biomass fuel required to achieve the same effect varies, and the total amount of biomass fuel required by biomass boilers also varies under different loads.

[0004] Therefore, how to provide a biomass boiler feed controller to effectively control and adjust the total amount of biomass fuel input when switching biomass fuel and facing different load demands is an urgent technical problem to be solved. Utility Model Content

[0005] This utility model provides a biomass boiler feed controller, which solves the problem of difficulty in controlling and adjusting the total amount of biomass fuel when changing biomass fuel or facing different load demands in biomass boilers.

[0006] This utility model provides a biomass boiler feed controller, comprising: a storage hopper, an abutment plate at the bottom of the storage hopper, sliders on both sides of the abutment plate, a groove on the inner side wall of the bottom of the storage hopper, the sliders engaging with the groove, a first connecting frame on the side wall of the storage hopper, a first motor on the first connecting frame, one end of the first motor shaft connected to a lead screw shaft, the other end of the lead screw shaft connected to a lead screw support, the lead screw support being located on the side wall at the bottom of the storage hopper away from the groove, a bushing screwed onto the lead screw shaft, and a connecting block on the bottom surface of the abutment plate, the connecting block being connected to the bushing.

[0007] In one possible implementation, a first cylinder is provided at the bottom of the storage hopper. The first cylinder includes an upper cylinder and a lower cylinder. The top of the upper cylinder is connected to the bottom of the storage hopper. The inner sidewall of the lower cylinder slides on the outer sidewall of the upper cylinder. The bottom of the lower cylinder is connected to the sidewall of one end of a second cylinder. The other end of the second cylinder is used to be placed above the feed inlet of the boiler.

[0008] In one possible implementation, a second connecting frame is provided on the outer side wall of the second cylinder, and a second motor is provided on the second connecting frame. The rotating shaft of the second motor passes through at least part of the side wall of the second cylinder and is connected to the helical blades through a coupling. The helical blades are rotatably disposed inside the second cylinder.

[0009] In one possible implementation, a drive disc is provided on the shaft of the second motor, and a driven disc is provided on the side wall of the lower cylinder. The drive disc and the driven disc are connected by a belt. The driven disc is hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the outer side wall of the upper cylinder.

[0010] One possible implementation also includes a support frame connected to the storage hopper.

[0011] In one possible implementation, the support frame is further provided with a measuring hopper, which is positioned above the storage hopper. A rotating plate is provided at the bottom of the measuring hopper, and a third connecting frame is provided on the side wall of the measuring hopper. A third motor is provided on the third connecting frame, and the rotating shaft of the third motor is connected to the rotating plate.

[0012] One possible implementation also includes a feeding assembly, one end of which is connected to a measuring hopper, and the other end of which is located in the biomass fuel storage area.

[0013] In one possible implementation, the feeding assembly includes a conveyor belt and a fourth motor, the fourth motor being used to control the conveyor belt to convey the biomass material.

[0014] In one possible implementation, a plurality of gravity sensors are provided on the rotating plate, and a controller is provided on the fourth motor. The controller is used to receive signals emitted by the gravity sensors and control the rotation of the shaft of the fourth motor.

[0015] In one possible implementation, a vibrator is provided on the hopper, which causes the hopper to vibrate so that the bottom of the hopper remains unobstructed when the abutment plate moves away from the hopper.

[0016] The beneficial effects of this invention are as follows: First, the first motor is controlled, and the rotation of its shaft drives the lead screw shaft to rotate. Then, the bushing moves on the lead screw shaft, causing the connecting block to move. Next, the abutment plate is subjected to force, and the slider moves within the groove, opening the bottom of the storage hopper. By adjusting the direction of the first motor's shaft, the bottom of the storage hopper can be opened or closed. This solves the problem of difficulty in controlling and adjusting the total amount of biomass fuel added when changing biomass fuel in a biomass boiler or when facing different load demands. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional cross-sectional view of the storage hopper of a biomass boiler feed controller according to this utility model;

[0019] Figure 2 This is a front perspective view of the combination of the storage hopper and the measuring hopper of a biomass boiler feed controller according to this utility model;

[0020] Figure 3 This is a front view of the coupling of a biomass boiler feed controller according to this utility model;

[0021] Figure 4 This is a right view of the closed measuring hopper of a biomass boiler feed controller according to the present invention;

[0022] Figure 5 The right view showing the opening of the measuring hopper of a biomass boiler feed controller according to this utility model;

[0023] Figure 6 This is a right view of the first state of the first cylinder of the biomass boiler feed controller according to the present invention;

[0024] Figure 7 This is a right view of the second state of the first cylinder of the biomass boiler feed controller of this utility model;

[0025] Figure 8 This is a right view of a biomass boiler feed controller according to the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Storage hopper; 2. Abutment plate; 3. Slider; 4. Slide groove; 5. First connecting frame; 6. First motor; 7. Lead screw shaft; 8. Lead screw support seat; 9. Bushing; 10. Connecting block; 11. First cylinder; 1101. Upper cylinder; 1102. Lower cylinder; 12. Second cylinder; 13. Feed inlet; 14. Second motor; 15. Coupling; 1501. First connector; 1502. Second connector; 16. Spiral blade; 17. Driving disc; 18. Driven disc; 19. Connecting rod; 20. Support frame; 21. Measuring hopper; 22. Rotating plate; 23. Third motor; 24. Feeding assembly; 2401. Conveyor belt; 2402. Fourth motor; 25. Gravity sensor; 26. Controller; 27. Vibrator; 28. Belt; 29. ​​Second connecting frame; 30. Third connecting frame. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] See Figure 1 This utility model provides a technical solution: a biomass boiler feed controller, comprising: a storage hopper 1, an abutment plate 2 at the bottom of the storage hopper 1, sliders 3 on both sides of the abutment plate 2, a groove 4 on the inner side wall of the bottom of the storage hopper 1, sliders 3 cooperating with groove 4, a first connecting frame 5 on the side wall of the storage hopper 1, a first motor 6 on the first connecting frame 5, the shaft of the first motor 6 being connected to one end of a lead screw shaft 7, the other end of the lead screw shaft 7 being connected to a lead screw support seat 8, the lead screw support seat 8 being located on the side wall of the bottom of the storage hopper 1 away from the groove 4, a bushing 9 being screwed onto the lead screw shaft 7, a connecting block 10 on the bottom surface of the abutment plate 2, and the connecting block 10 being connected to the bushing 9.

[0032] In this process, slider 3 slides within the groove 4, ensuring smoother movement of the abutment plate 2 at the bottom of the storage hopper 1 under pressure, while also limiting the trajectory of the abutment plate 2. Specifically, firstly, the shaft of the first motor 6 rotates, driving the lead screw shaft 7 to rotate. One end of the lead screw shaft 7 abuts against the lead screw support seat 8. Then, the bushing 9 is subjected to force and moves on the lead screw shaft 7, causing the connecting block 10 to move. Subsequently, the abutment plate 2 is subjected to force, slider 3 moves within the groove 4, and the bottom of the storage hopper 1 opens. By adjusting the direction of the shaft of the first motor 6, the bottom of the storage hopper 1 can be opened or closed. This addresses the problem that the total amount of biomass fuel added to a biomass boiler is difficult to control and adjust using only traditional manual fuel addition methods when changing biomass fuel or facing different load demands.

[0033] See Figure 2 and Figure 8Furthermore, a support frame 20 is provided on the storage hopper 1, wherein the support frame 20 may be a telescopic support frame 20, which is convenient to adapt to different types of biomass boilers. Preferably, a vibrator 27 is provided on the storage hopper 1, which causes the storage hopper 1 to vibrate so that the discharge of material from the storage hopper 1 is smooth when the bottom of the storage hopper 1 is opened.

[0034] See Figure 2 , Figure 6 and Figure 7 In some embodiments, a first cylinder 11 is provided at the bottom of the storage hopper 1. The first cylinder 11 includes an upper cylinder 1101 and a lower cylinder 1102. The top of the upper cylinder 1101 is connected to the bottom of the storage hopper 1. The inner sidewall of the lower cylinder 1102 slides on the outer sidewall of the upper cylinder 1101. The bottom of the lower cylinder 1102 is connected to the sidewall of one end of a second cylinder 12. The other end of the second cylinder 12 is used to be placed above the feed inlet 13 of the boiler.

[0035] Preferably, the inner wall of the lower cylinder 1102 is provided with a groove, and the outer wall of the upper cylinder 1101 is provided with a strip-shaped protrusion. The strip-shaped protrusion cooperates with the groove to make the lower cylinder 1102 slide more smoothly on the upper cylinder 1101.

[0036] See Figure 2 and Figure 3 In some embodiments, a second connecting frame 29 is provided on the outer side wall of the second cylinder 12, and a second motor 14 is provided on the second connecting frame 29. The rotating shaft of the second motor 14 passes through at least part of the side wall of the second cylinder 12 and is connected to the helical blade 16 through the coupling 15. The helical blade 16 is rotatably disposed inside the second cylinder 12.

[0037] The coupling 15 includes a first connector 1501 and a second connector 1502. The first connector 1501 is connected to the helical blade 16, and the second connector 1502 is connected to the shaft of the second motor 14. When the shaft of the second motor 14 rotates, it drives the coupling 15 to rotate, thereby driving the helical blade 16 to rotate. Multiple arc blades on the helical blade 16 will push the fuel in the first cylinder 11 out of the second cylinder 12.

[0038] See Figure 2 , Figure 6 and Figure 7 In some embodiments, a drive disc 17 is provided on the shaft of the second motor 14, and a driven disc 18 is provided on the side wall of the lower cylinder 1102. The drive disc 17 and the driven disc 18 are connected by a belt 28. The driven disc 18 is hinged to one end of the connecting rod 19, and the other end of the connecting rod 19 is hinged to the outer side wall of the upper cylinder 1101.

[0039] The active disc 17 is mounted on the shaft of the second motor 14 and is located between the second cylinder 12 and the fixed end of the second motor 14. The rotation of the shaft of the second motor 14 drives the active disc 17 to rotate, thereby driving the belt 28 on the active disc 17 to rotate, which in turn drives the driven disc 18 to rotate. Since the two ends of the connecting rod 19 are respectively hinged to the outer end face of the driven disc 18 and the outer wall of the upper cylinder 1101, the lower cylinder 1102 is subjected to an upward or downward force. The lower cylinder 1102 performs a vertical reciprocating motion on the upper cylinder 1101. Through the continuous movement of the bottom end of the upper cylinder 1101 within the lower cylinder 1102, fuel blockage in the first cylinder 11 is prevented, which would affect the fuel delivery.

[0040] See Figure 4 and Figure 5 In some embodiments, a measuring hopper 21 is also provided on the support frame 20. The measuring hopper 21 is placed above the storage hopper 1. A rotating plate 22 is provided at the bottom of the measuring hopper 21. A third connecting frame 30 is provided on the side wall of the measuring hopper 21. A third motor 23 is provided on the third connecting frame 30. The rotating shaft of the third motor 23 is connected to the rotating plate 22.

[0041] The rotating shaft of the third motor 23 rotates, driving the rotating plate 22 to rotate, thereby opening or closing the bottom of the measuring hopper 21. Preferably, a transparent plate is provided on the vertical side wall of the measuring hopper 21, and an indicator mark is provided on the transparent plate so that the staff can observe the fuel storage status of the measuring hopper 21.

[0042] In some embodiments, a feeding assembly 24 is further included. One end of the feeding assembly 24 is connected to the measuring hopper 21, and the other end of the feeding assembly 24 is disposed in the biomass fuel storage area. The feeding assembly 24 is used to convey biomass fuel into the measuring hopper 21. The feeding assembly 24 includes a conveyor belt 2401 and a fourth motor 2402, which controls the conveyor belt 2401 to convey biomass materials.

[0043] Furthermore, multiple gravity sensors 25 are provided on the rotating plate 22, and a controller 26 is provided on the fourth motor 2402. The controller 26 is used to receive signals from the gravity sensors 25 and control the rotation of the shaft of the fourth motor 2402.

[0044] Multiple gravity sensors 25 are connected in parallel. When the fuel in the measuring hopper 21 reaches the preset weight, the gravity sensor 25 sends an electrical signal to the controller 26. The controller 26 responds to the electrical signal and controls the fourth motor 2402 to stop rotating to prevent the measuring hopper 21 from overflowing.

[0045] It should be noted that the first motor 6, the second motor 14, the third motor 23, and the fourth motor 2402 are stepper motors, and the controller 26 is an STM32G431 series. The signal transmission and data flow generated during the process of the gravity sensor 25 sending electrical signals to the controller 26, and the controller 26 responding to the electrical signals and controlling the fourth motor 2402 to stop rotating, are techniques well-known to those skilled in the art. Since the first motor 6, the second motor 14, the third motor 23, and the fourth motor 2402 are stepper motors, the control of these motors can be done manually by the operator or uniformly through the central controller 26; this application does not limit this approach.

[0046] Working process: First, the staff adjusts the height of the support frame 20, places one end of the feeding mechanism in the biomass fuel storage area, and places the other end of the feeding mechanism in the measuring hopper 21. Then, the fourth motor 2402 is started, and the conveyor belt 2401 rotates to drive the fuel into the measuring hopper 21.

[0047] Secondly, the rotating shaft of the third motor 23 is controlled to rotate, and the rotating plate 22 rotates synchronously. The bottom of the measuring hopper 21 is in the open state, and the fuel enters the storage hopper 1 through the measuring hopper 21. Next, the rotating shaft of the first motor 6 is controlled to rotate, which drives the lead screw shaft 7 to rotate. The bushing 9 moves on the lead screw shaft 7 to the end away from the lead screw support seat 8, which drives the connecting block 10 to move. The abutment plate 2 is forced to move away from the lead screw support seat 8, and the fuel in the storage hopper 1 enters the second cylinder 12 through the first cylinder 11. Finally, the rotating shaft of the second motor 14 is controlled to rotate, which drives the spiral blade 16 to rotate. The arc-shaped blades on the spiral blade 16 push the fuel in the second cylinder 12 out of the second cylinder 12, completing the first fuel filling. Simultaneously, the second motor 14 rotates, which drives the drive disc 17 to rotate, thereby driving the belt 28 on the drive disc 17 to rotate, and then driving the driven disc 18 to rotate. The lower cylinder 1102 is subjected to an upward or downward force, and the lower cylinder 1102 performs a vertical reciprocating motion on the upper cylinder 1101. Through the continuous movement of the bottom end of the upper cylinder 1101 in the lower cylinder 1102, fuel blockage in the first cylinder 11 is prevented.

[0048] In the above embodiments, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A biomass boiler feed controller, characterized in that, include: A storage hopper has an abutment plate at its bottom and sliders on both sides of the abutment plate. A groove is provided on the inner sidewall of the bottom of the storage hopper, and the sliders engage with the groove. A first connecting frame is provided on the sidewall of the storage hopper, and a first motor is mounted on the first connecting frame. One end of the first motor's shaft is connected to a lead screw shaft, and the other end of the lead screw shaft is connected to a lead screw support. The lead screw support is located on the sidewall at the bottom of the storage hopper, away from the groove. A bushing is screwed onto the lead screw shaft. A connecting block is provided on the bottom surface of the abutment plate, and the connecting block is connected to the bushing.

2. The biomass boiler feed controller according to claim 1, characterized in that, The bottom of the storage hopper is provided with a first cylinder, which includes an upper cylinder and a lower cylinder. The top of the upper cylinder is connected to the bottom of the storage hopper. The inner sidewall of the lower cylinder slides on the outer sidewall of the upper cylinder. The bottom of the lower cylinder is connected to the sidewall of one end of a second cylinder. The other end of the second cylinder is used to place above the feed inlet of the boiler.

3. The biomass boiler feed controller according to claim 2, characterized in that, The outer side wall of the second cylinder is provided with a second connecting frame, and a second motor is provided on the second connecting frame. The rotating shaft of the second motor passes through at least part of the side wall of the second cylinder and is connected to the helical blades through a coupling. The helical blades are rotatably disposed inside the second cylinder.

4. The biomass boiler feed controller according to claim 3, characterized in that, The second motor has a drive disc on its shaft and a driven disc on the side wall of the lower cylinder. The drive disc and the driven disc are connected by a belt. The driven disc is hinged to one end of a connecting rod, and the other end of the connecting rod is hinged to the outer side wall of the upper cylinder.

5. The biomass boiler feed controller according to claim 4, characterized in that, It also includes a support frame, which is connected to the storage hopper.

6. The biomass boiler feed controller according to claim 5, characterized in that, The support frame is also equipped with a measuring hopper, which is placed above the storage hopper. A rotating plate is provided at the bottom of the measuring hopper, and a third connecting frame is provided on the side wall of the measuring hopper. A third motor is provided on the third connecting frame, and the rotating shaft of the third motor is connected to the rotating plate.

7. The biomass boiler feed controller according to claim 6, characterized in that, It also includes a feeding assembly, one end of which is connected to a measuring hopper, and the other end of which is located in the biomass fuel storage area.

8. The biomass boiler feed controller according to claim 7, characterized in that, The feeding assembly includes a conveyor belt and a fourth motor, the fourth motor being used to control the conveyor belt to transport the biomass fuel.

9. The biomass boiler feed controller according to claim 8, characterized in that, The rotating plate is equipped with multiple gravity sensors, and the fourth motor is equipped with a controller. The controller is used to receive signals from the gravity sensors and control the rotation of the fourth motor shaft.

10. The biomass boiler feed controller according to claim 9, characterized in that, The storage hopper is equipped with a vibrator, which causes the storage hopper to vibrate so that the bottom of the storage hopper remains unobstructed when the abutment plate moves away from the storage hopper.

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