Quantitative discharging feeding device and control method thereof

Abstract

The invention relates to the technical field of power plant boilers, and discloses a quantitative discharging feeding device and a control method thereof.The quantitative discharging feeding device comprises a spiral feeding rod rotationally installed in a conveying pipe, an output shaft of a first motor is in transmission connection with the spiral feeding rod, and a spraying pipe is installed below the conveying pipe; the measuring cylinder is arranged above the material conveying pipe and is communicated with the material conveying pipe; the crushing chamber is mounted above the measuring cylinder and is communicated with the measuring cylinder; the lower end of the crushing chamber is rotationally connected with a first connecting shaft; the first connecting shaft is fixedly connected with a first sealing plate; the lower end of the measuring cylinder is rotatably connected with a second connecting shaft, and the second connecting shaft is fixedly connected with a second sealing plate. Through cooperation of the first connecting shaft and the first sealing plate and cooperation of the second connecting shaft and the second sealing plate, when fuel in the measuring cylinder meets the target demand quantity, the pipeline between the crushing chamber and the measuring cylinder is closed, the pipeline between the measuring cylinder and the conveying pipe is communicated, quantitative fuel enters the conveying pipe, and quantitative discharging is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power plant boiler, in particular to a quantitative feeding device and a control method thereof. BACKGROUND

[0002] The power plant boiler is one of the main thermal equipment in the thermal power plant. During the use of the boiler, the fuel needs to be delivered to the combustion chamber. Usually, a feeding device for the power plant boiler is used to deliver the fuel to the combustion chamber for combustion.

[0003] In the related art, the feeding device for the power plant boiler directly delivers the crushed fuel to the inside of the feeding pipe, so that the workers cannot know the amount of fuel delivered to the combustion chamber, which may result in the incomplete combustion of the fuel due to the excessive fuel in the combustion chamber, or the decrease of the boiler temperature and the influence on the subsequent power generation efficiency due to the insufficient fuel in the combustion chamber. SUMMARY

[0004] Therefore, the present application provides a quantitative feeding device and a control method thereof to solve the technical problem of the inability to quantitatively feed in the use of the feeding device.

[0005] In a first aspect, the present application provides a quantitative feeding device, comprising:

[0006] a feeding pipe;

[0007] a spiral feeding rod rotatably installed inside the feeding pipe;

[0008] a first motor, an output shaft of the first motor being in transmission connection with the spiral feeding rod;

[0009] a feeding pipe, installed at one end of the feeding pipe and below the feeding pipe, and in communication with the feeding pipe;

[0010] a measuring cylinder, installed at one end of the feeding pipe away from the feeding pipe and above the feeding pipe, and in communication with the feeding pipe;

[0011] a crushing chamber, installed above the measuring cylinder and in communication with the measuring cylinder; a first connecting shaft is rotatably connected to the lower end of the crushing chamber, and a first sealing plate is fixedly connected to the first connecting shaft;

[0012] a second connecting shaft is rotatably connected to the lower end of the measuring cylinder, and a second sealing plate is fixedly connected to the second connecting shaft.

[0013] Beneficial effects: By providing a measuring cylinder above the feeding pipe, and setting the measuring cylinder at a position far away from the spraying pipe; when the amount of fuel in the measuring cylinder meets the target requirement, the fuel in the measuring cylinder can be transferred into the feeding pipe; then the screw feeding rod is rotated to transfer the fuel into the spraying pipe for use in the combustion chamber. An upper end of the measuring cylinder is provided with a powdering chamber, and the powdering chamber is connected with the measuring cylinder; the powdering chamber is provided with an opening at an upper end thereof, and large fuel pieces are put into the powdering chamber through the opening, and then the large fuel pieces are crushed in the powdering chamber. After the large fuel pieces are crushed in the powdering chamber, the crushed fuel is transferred into the measuring cylinder through a pipeline between the powdering chamber and the measuring cylinder, so as to be stored in the measuring cylinder and measured.

[0014] A first connecting shaft is further provided at a lower end of the powdering chamber, and a first sealing plate is fixedly connected with the first connecting shaft; when the first connecting shaft is rotated, the first sealing plate can be flipped to connect or close the pipeline between the powdering chamber and the measuring cylinder. A second connecting shaft is further provided at a lower end of the measuring cylinder, and a second sealing plate is fixedly connected with the second connecting shaft; when the second connecting shaft is rotated, the second sealing plate can be flipped to connect or close the pipeline between the measuring cylinder and the feeding pipe.

[0015] When the amount of fuel in the measuring cylinder does not meet the target requirement, the second sealing plate is in a horizontal state to close the pipeline between the measuring cylinder and the feeding pipe, so that the fuel can be accumulated in the measuring cylinder, and the fuel is not directly transferred into the feeding pipe; the first sealing plate is in a vertical state to connect the pipeline between the powdering chamber and the measuring cylinder, so that the crushed fuel can directly enter the interior of the measuring cylinder for measurement. When the amount of fuel in the measuring cylinder meets the target requirement, the first connecting shaft and the second connecting shaft are rotated to flip the first sealing plate and the second sealing plate, so that the first sealing plate is in a horizontal state to close the pipeline between the powdering chamber and the measuring cylinder, and the second sealing plate is in a vertical state to connect the pipeline between the measuring cylinder and the feeding pipe, so that the fuel is quantitatively transferred into the feeding pipe, thereby realizing quantitative feeding, avoiding the situation that the amount of fuel in the combustion chamber is too much or too little due to the direct transfer of the crushed fuel into the interior of the feeding pipe, ensuring that the fuel is continuously and stably transferred into the combustion chamber, ensuring that the fuel in the combustion chamber is completely burned, and ensuring the power generation efficiency of the power plant boiler, so as to ensure the stable operation of the power plant boiler.

[0016] In an optional embodiment, a second motor and a first connecting member are further included, one end of the second connecting shaft extends to the outside of the measuring cylinder, the first connecting member is fixedly connected with the second connecting shaft outside the measuring cylinder, and an output shaft of the second motor is in transmission connection with the first connecting member.

[0017] In an optional embodiment, a second connector is further included, wherein one end of the first connecting shaft extends to the outside of the grinding chamber, and the second connector is fixedly connected to the first connecting shaft located outside the grinding chamber.

[0018] A transmission component is connected to the first connector and the second connector respectively, for transmitting power between the first connector and the second connector.

[0019] In one optional embodiment, the measuring cylinder includes a measuring cylinder body, a first connecting section, and a first pipeline; the measuring cylinder body and the first pipeline are respectively connected to the two ends of the first connecting section, the second connecting shaft and the second sealing plate are both located at the first pipeline, and the diameter of the second sealing plate is equal to the inner diameter of the first pipeline.

[0020] In one optional embodiment, the grinding chamber includes a grinding chamber body, a second connecting section, and a second pipeline; the grinding chamber body and the second pipeline are respectively connected to the two ends of the second connecting section, the first connecting shaft and the first sealing plate are both located at the second pipeline, the diameter of the first sealing plate is equal to the inner diameter of the second pipeline, and the inner diameter of the second pipeline is equal to the inner diameter of the first pipeline.

[0021] In an optional implementation, a third motor is also included, mounted above the measuring cylinder;

[0022] The third connecting shaft has one end connected to the output shaft of the third motor and the other end rotatably connected to one side of the measuring cylinder.

[0023] The collision roller is fixedly connected to the third connecting shaft.

[0024] In one alternative embodiment, the collision roller has an elliptical cross-section and is eccentrically mounted on the third connecting shaft.

[0025] In an optional embodiment, the system further includes a pair of fourth connecting shafts and a pair of crushing rollers, the pair of fourth connecting shafts being rotatably connected to the crushing chamber, and the pair of crushing rollers being respectively mounted on the fourth connecting shafts, with the crushing rollers being coaxial with the fourth connecting shafts.

[0026] In an optional embodiment, the system further includes a fourth motor and a pair of gears, one end of the fourth connecting shaft extending to the outside of the grinding chamber, the pair of gears being fixedly connected to the fourth connecting shaft located outside the grinding chamber, and the pair of gears being meshed together; the output shaft of the fourth motor is drivenly connected to one of the gears.

[0027] Secondly, the present invention also provides a control method for a quantitative feeding device, applied to the quantitative feeding device described above, comprising:

[0028] To obtain the amount of fuel in the measuring cylinder;

[0029] In response to the fuel quantity meeting the target demand, the second connecting shaft and the first connecting shaft are controlled to rotate;

[0030] Based on the rotation of the second connecting shaft and the first connecting shaft, the second sealing plate and the first sealing plate are controlled to flip, so that the pipeline between the measuring cylinder and the conveying pipe is connected, and the pipeline between the measuring cylinder and the crushing chamber is closed.

[0031] Beneficial effects: By obtaining the amount of fuel in the measuring cylinder, and when the fuel in the measuring cylinder meets the target demand, both the first and second connecting shafts rotate to drive the first and second sealing plates to rotate. This makes the first sealing plate horizontal to close the pipeline between the crushing chamber and the measuring cylinder, and the second sealing plate vertical to connect the pipeline between the measuring cylinder and the conveying pipe. This allows a fixed amount of fuel to enter the interior of the conveying pipe, thereby achieving quantitative feeding. This avoids situations where there is too much or too little fuel in the combustion chamber due to directly transmitting the crushed fuel into the interior of the conveying pipe, ensuring a continuous and stable transmission of fuel to the combustion chamber, ensuring complete combustion of the fuel in the combustion chamber, and guaranteeing the power generation efficiency of the power plant boiler, thus ensuring the stable operation of the power plant boiler. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is a front cross-sectional view of a feeding device for quantitative feeding according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the left-side cross-sectional structure of the connection between the first connecting member and the belt in a quantitative feeding device according to an embodiment of the present invention.

[0035] Figure 3 This is a top view schematic diagram of the connection between the crushing roller and the gear in a quantitative feeding device according to an embodiment of the present invention;

[0036] Figure 4This is a schematic diagram of the overall structure of the connection between the second connecting shaft and the first sealing plate in a quantitative feeding device according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the overall structure of the connection between the first connecting shaft and the gear in a quantitative feeding device according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the overall structure of the connection between the fourth connecting shaft and the collision roller in a quantitative feeding device according to an embodiment of the present invention.

[0039] Figure 7 This is a schematic flowchart illustrating a control method for a quantitative feeding device according to an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Feeding pipe; 2. Screw feeder; 3. First motor; 4. Spray pipe; 5. Measuring cylinder; 51. Measuring cylinder body; 52. First connecting section; 53. First pipeline; 6. Crushing chamber; 61. Crushing chamber body; 62. Second connecting section; 63. Second pipeline; 7. Fourth connecting shaft; 8. Crushing roller; 9. Gear; 10. Fourth motor; 11. First connecting shaft; 12. First sealing plate; 13. Second connecting shaft; 14. Second sealing plate; 15. First connecting piece; 16. Second motor; 17. Transmission component; 18. Second connecting piece; 19. Third connecting shaft; 20. Third motor; 21. Collision roller. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, 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 that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] According to an embodiment of the present invention, see Figures 1 to 4A quantitative feeding device is provided, comprising: a feeding pipe 1; a screw feeder 2 rotatably installed inside the feeding pipe 1; a first motor 3, the output shaft of the first motor 3 being drivenly connected to the screw feeder 2; a spray pipe 4 installed at one end of the feeding pipe 1 and located below the feeding pipe 1, and connected to the feeding pipe 1; a measuring cylinder 5 installed at the end of the feeding pipe 1 away from the spray pipe 4 and located above the feeding pipe 1, and connected to the feeding pipe 1; a crushing chamber 6 installed above the measuring cylinder 5 and connected to the measuring cylinder 5; a first connecting shaft 11 rotatably connected to the lower end of the crushing chamber 6, and a first sealing plate 12 fixedly connected to the first connecting shaft 11; and a second connecting shaft 13 rotatably connected to the lower end of the measuring cylinder 5, and a second sealing plate 14 fixedly connected to the second connecting shaft 13.

[0045] In this embodiment, the feed pipe 1 has a hollow receiving cavity for accommodating the screw feeder 2 and the pulverized fuel. The screw feeder 2 is rotatably mounted in the receiving cavity of the feed pipe 1. One end of the screw feeder 2 is connected to the side wall of the feed pipe 1, and the other end extends out of the feed pipe 1 and is drively connected to the output shaft of the first motor 3. The first motor 3 provides driving force to drive the screw feeder 2 to rotate. A spray pipe 4 is also connected to the feed pipe 1. The spray pipe 4 is located below the feed pipe 1 and near the end of the feed pipe 1. The spray pipe 4 is connected to the feed pipe 1, so that fuel can be transferred from the feed pipe 1 to the spray pipe 4 and further delivered to the combustion chamber for use by the equipment.

[0046] A measuring cylinder 5 is located above the feed pipe 1, at the end furthest from the spray pipe 4. The measuring cylinder 5 measures the amount of fuel entering it. It is connected to the feed pipe 1. When the amount of fuel in the measuring cylinder 5 meets the target requirements, the fuel can be transferred from the measuring cylinder 5 to the feed pipe 1. Then, the screw feeder 2 is rotated to transfer the fuel to the spray pipe 4 for use in the combustion chamber. A pulverizing chamber 6 is also located above the measuring cylinder 5, connected to it. The pulverizing chamber 6 has an opening at the top, through which large pieces of fuel are fed and pulverized. After being pulverized, the pulverized fuel is transported to the measuring cylinder 5 through a pipeline between the pulverizing chamber 6 and the measuring cylinder 5 for storage and measurement.

[0047] A rotatable first connecting shaft 11 is provided at the lower end of the crushing chamber 6, and a first sealing plate 12 is fixedly connected to the first connecting shaft 11. When the first connecting shaft 11 rotates, it can drive the first sealing plate 12 to flip, so that the pipeline between the crushing chamber 6 and the measuring cylinder 5 is connected or closed. A rotatable second connecting shaft 13 is provided at the lower end of the measuring cylinder 5, and a second sealing plate 14 is fixedly connected to the second connecting shaft 13. When the second connecting shaft 13 rotates, it can drive the second sealing plate 14 to flip, so that the pipeline between the measuring cylinder 5 and the conveying pipe 1 is connected or closed.

[0048] Understandably, when the fuel in the measuring cylinder 5 has not yet met the target demand, the second sealing plate 14 is in a horizontal state to close the pipeline between the measuring cylinder 5 and the conveying pipe 1, so that the fuel can accumulate in the measuring cylinder 5 and prevent the fuel from being directly delivered to the conveying pipe 1; the first sealing plate 12 is in a vertical state to connect the pipeline between the crushing chamber 6 and the measuring cylinder 5, so that the crushed fuel can directly enter the interior of the measuring cylinder 5 for measurement. When the fuel in the measuring cylinder 5 meets the target demand, both the first connecting shaft 11 and the second connecting shaft 13 rotate to drive the first sealing plate 12 and the second sealing plate 14 to rotate. This causes the first sealing plate 12 to be in a horizontal state to close the pipeline between the crushing chamber 6 and the measuring cylinder 5, and the second sealing plate 14 to be in a vertical state to connect the pipeline between the measuring cylinder 5 and the conveying pipe 1. This allows a fixed amount of fuel to enter the interior of the conveying pipe 1, thereby achieving quantitative feeding. This avoids situations where there is too much or too little fuel in the combustion chamber due to directly transmitting the crushed fuel into the interior of the conveying pipe 1, ensuring a continuous and stable transmission of fuel to the combustion chamber, ensuring complete combustion of the fuel in the combustion chamber, and guaranteeing the power generation efficiency of the power plant boiler, thus enabling the power plant boiler to operate stably.

[0049] See also Figure 5 In one embodiment, it further includes a pair of fourth connecting shafts 7 and a pair of crushing rollers 8. The pair of fourth connecting shafts 7 are rotatably connected in the crushing chamber 6, and the pair of crushing rollers 8 are respectively mounted on the fourth connecting shafts 7, and the crushing rollers 8 are coaxial with the fourth connecting shafts 7.

[0050] In this embodiment, a pair of fourth connecting shafts 7 are provided inside the crushing chamber 6. The pair of fourth connecting shafts 7 are horizontally and rotatably arranged inside the crushing chamber 6, and the two ends of the fourth connecting shafts 7 are rotatably connected to the side wall of the crushing chamber 6 through bearings or other components. A crushing roller 8 is fixedly connected to each fourth connecting shaft 7, so that the two crushing rollers 8 are also horizontally arranged inside the crushing chamber 6. When the two fourth connecting shafts 7 rotate, they will drive their respective crushing rollers 8 to rotate. There is a gap between the two crushing rollers 8. When large pieces of fuel enter from the opening above the crushing chamber 6, the large pieces of fuel will fall between the two crushing rollers 8, and then be crushed into small particles by the rotating crushing rollers 8 through squeezing, shearing, and grinding, thereby fully crushing the fuel to avoid some large pieces of fuel clogging the pipeline. Moreover, after the fuel is fully crushed, it can burn better, improve the efficiency of the power plant boiler, and reduce the probability of incomplete combustion, thereby reducing environmental pollution.

[0051] Furthermore, the crushing roller 8 is coaxial with the fourth connecting shaft 7, that is, the central axis of the crushing roller 8 and the central axis of the fourth connecting shaft 7 are completely coincident. Setting the crushing roller 8 and the fourth connecting shaft 7 coaxially can ensure that the crushing roller 8 will not wobble eccentrically when rotating, and ensure that the gap between the two crushing rollers 8 is uniform, so that the fuel is crushed more evenly, while reducing the wear of the feeding device caused by eccentricity.

[0052] In one embodiment, the system further includes a fourth motor 10 and a pair of gears 9. One end of the fourth connecting shaft 7 extends to the outside of the crushing chamber 6. The pair of gears 9 are fixedly connected to the fourth connecting shaft 7 located outside the crushing chamber 6 and are meshed together. The output shaft of the fourth motor 10 is drivenly connected to one of the gears 9.

[0053] In this embodiment, one end of each fourth connecting shaft 7 is rotatably connected to the side wall of the crushing chamber 6, and the other end extends to the outside of the crushing chamber 6. A gear 9 is fixedly connected to each fourth connecting shaft 7 located outside the crushing chamber 6, allowing the gear 9 and the fourth connecting shaft 7 to rotate synchronously. The two gears 9 on the two fourth connecting shafts 7 are meshed together. When the two gears 9 are driven to rotate, the rotation directions of the two fourth connecting shafts 7 are opposite, thereby causing the fourth connecting shafts 7 to drive the two crushing rollers 8 to rotate relative to each other, thus facilitating the crushing of fuel.

[0054] The output shaft of the fourth motor 10 is connected to one of the gears 9. After the fuel is poured into the crushing chamber 6, the fourth motor 10 provides driving force to drive one of the gears 9 to rotate. The gear 9 transmits the driving force to the gear 9 meshing with it, so that the two gears 9 can rotate synchronously. Furthermore, the rotation of the two gears 9 drives the two fourth connecting shafts 7 to rotate, and causes the two crushing rollers 8 fixedly connected to the two fourth connecting shafts 7 to rotate relative to each other, so that the crushing rollers 8 crush the fuel, thereby fully crushing the fuel to avoid some large pieces of fuel clogging the pipeline.

[0055] In one embodiment, a second motor 16 and a first connector 15 are also included. One end of the second connecting shaft 13 extends to the outside of the measuring cylinder 5. The first connector 15 is fixedly connected to the second connecting shaft 13 located outside the measuring cylinder 5. The output shaft of the second motor 16 is connected to the first connector 15 in a transmission manner.

[0056] In this embodiment, one end of the second connecting shaft 13 is rotatably connected to the inner wall of the measuring cylinder 5, and the other end extends to the outside of the measuring cylinder 5. A first connecting member 15 is fixedly connected to the second connecting shaft 13 located outside the measuring cylinder 5. The first connecting member 15 is also drively connected to the output shaft of the second motor 16. By driving the second motor 16 to rotate its output shaft, the driving force is transmitted to the first connecting member 15, causing the first connecting member 15 to rotate synchronously with the output shaft. The first connecting member 15 then transmits the driving force to the second connecting shaft 13, and further drives the second sealing plate 14 to flip, so that the second sealing plate 14 can connect or close the pipeline between the measuring cylinder 5 and the conveying pipe 1.

[0057] For example, when the fuel in the measuring cylinder 5 does not meet the target demand, the second motor 16 provides driving force, which is then sequentially transmitted to the first connector 15, the second connecting shaft 13, and the second sealing plate 14. This causes the second sealing plate 14 to be in a horizontal state, closing the pipeline between the measuring cylinder 5 and the conveying pipe 1, allowing fuel to accumulate inside the measuring cylinder 5 and preventing fuel from being directly delivered to the conveying pipe 1. When the fuel in the measuring cylinder 5 meets the target demand, the second motor 16 provides driving force, which is then sequentially transmitted to the first connector 15, the second connecting shaft 13, and the second sealing plate 14. This causes the second sealing plate 14 to be in a vertical state, connecting the pipeline between the measuring cylinder 5 and the conveying pipe 1, allowing a fixed amount of fuel to enter the interior of the conveying pipe 1. This achieves quantitative feeding and avoids situations where there is too much or too little fuel in the combustion chamber due to directly transmitting the pulverized fuel into the conveying pipe 1, thus ensuring a continuous and stable delivery of fuel to the combustion chamber.

[0058] In one embodiment, a second connector 18 is also included, one end of the first connecting shaft 11 extends to the outside of the crushing chamber 6, and the second connector 18 is fixedly connected to the first connecting shaft 11 located outside the crushing chamber 6; a transmission member 17 is connected to the first connector 15 and the second connector 18 respectively, for driving the first connector 15 and the second connector 18 to drive the connection between them.

[0059] In this embodiment, one end of the first connecting shaft 11 is rotatably connected to the inner wall of the crushing chamber 6, and the other end extends to the outside of the crushing chamber 6. A second connecting member 18 is fixedly connected to the first connecting shaft 11 located outside the crushing chamber 6. A transmission member 17 is provided on the second connecting member 18 and the first connecting member 15, so that the first connecting member 15 and the second connecting member 18 are connected by transmission. The transmission member 17 can be a belt or chain, etc. When the output shaft of the second motor 16 is driven to rotate, the driving force can be transmitted to the first connecting member 15, so that the first connecting member 15 rotates synchronously with the output shaft. The first connecting member 15 then transmits the driving force to the second connecting shaft 13 and the second connecting member 18 through the transmission member 17. Then, the second connecting member 18 transmits the driving force to the first connecting shaft 11, so that the first sealing plate 12 and the second sealing plate 14 rotate synchronously, so that the first sealing plate 12 can connect or close the pipeline between the crushing chamber 6 and the measuring cylinder 5, and the second sealing plate 14 can connect or close the pipeline between the measuring cylinder 5 and the conveying pipe 1.

[0060] For example, when large pieces of fuel are being crushed in the crushing chamber 6, the fuel in the measuring cylinder 5 may not yet meet the target demand. The second motor 16 provides driving force and sequentially transmits the driving force to the first connector 15, the second connector 18, the first connecting shaft 11, the second connecting shaft 13, the first sealing plate 12, and the second sealing plate 14. This causes the second sealing plate 14 to be in a horizontal state to close the pipeline between the measuring cylinder 5 and the conveying pipe 1, allowing the fuel to accumulate in the measuring cylinder 5 and preventing the fuel from being directly conveyed into the conveying pipe 1. The first sealing plate 12 is in a vertical state to connect the pipeline between the crushing chamber 6 and the measuring cylinder 5, allowing the crushed fuel to directly enter the interior of the measuring cylinder 5 for measurement.

[0061] When the fuel in the measuring cylinder 5 has met the target demand, the second motor 16 drives the first connecting member 15 and the second connecting shaft 13 to rotate. When the first connecting member 15 rotates, the transmission member 17 drives the second connecting member 18 to rotate, so that the second connecting member 18 drives the first connecting shaft 11 to rotate, so that the first connecting shaft 11 drives the first sealing plate 12 to flip until the first sealing plate 12 is in a horizontal state, so as to close the pipeline between the measuring cylinder 5 and the crushing chamber 6. When the second connecting shaft 13 rotates, it drives the second sealing plate 14 to flip until the second sealing plate 14 is in a vertical state, so as to connect the pipeline between the measuring cylinder 5 and the conveying pipe 1, so that the fuel inside the measuring cylinder 5 that meets the target demand is transferred to the inside of the conveying pipe 1. The first motor 3 works to drive the screw feeder 2 to rotate, so that the screw feeder 2 transfers the fuel to the inside of the spray pipe 4. The fan on the spray pipe 4 blows the fuel into the boiler, thereby realizing quantitative feeding. This avoids the situation where there is too much or too little fuel in the combustion chamber due to the direct transfer of the crushed fuel to the inside of the conveying pipe 1, so as to ensure the continuous and stable transfer of fuel to the combustion chamber, ensure the complete combustion of the fuel in the combustion chamber, and ensure the power generation efficiency of the power plant boiler, so as to ensure the stable operation of the power plant boiler.

[0062] In one embodiment, the measuring cylinder 5 includes a measuring cylinder body 51, a first connecting section 52, and a first pipeline 53; the measuring cylinder body 51 and the first pipeline 53 are respectively connected to the two ends of the first connecting section 52, and the second connecting shaft 13 and the second sealing plate 14 are both located at the first pipeline 53, and the diameter of the second sealing plate 14 is equal to the inner diameter of the first pipeline 53.

[0063] In this embodiment, the measuring cylinder 5 consists of a measuring cylinder body 51, a first connecting section 52, and a first pipeline 53. The measuring cylinder body 51 is mainly used to store the pulverized fuel. The first connecting section 52 is connected to the lower end of the measuring cylinder body 51. The first connecting section 52 is conical and located below the measuring cylinder body 51. The first pipeline 53 is connected below the first connecting section 52, and the other end of the first pipeline 53 is connected to the conveying pipe 1, so that the first pipeline 53 connects the measuring cylinder 5 and the conveying pipe 1. When it is necessary to transfer fuel to the conveying pipe 1, the first connecting section 52 can smoothly transfer the fuel to the first pipeline 53, avoiding fuel accumulation and blockage at the connection between the first connecting section 52 and the first pipeline 53. Then, the fuel in the measuring cylinder 5 is transferred to the conveying pipe 1 through the first pipeline 53 to realize the fuel transfer.

[0064] The second connecting shaft 13 and the second sealing plate 14 are both located at the first pipeline 53, and the diameter of the second sealing plate 14 is equal to the inner diameter of the first pipeline 53. This allows the second sealing plate 14 to effectively block the first pipeline 53, preventing fuel from leaking into the conveying pipe 1 when the amount of fuel in the measuring cylinder 5 does not meet the target demand, thus ensuring quantitative fuel delivery.

[0065] In one embodiment, the pulverizing chamber 6 includes a pulverizing chamber body 61, a second connecting section 62, and a second pipeline 63; the pulverizing chamber body 61 and the second pipeline 63 are respectively connected to the two ends of the second connecting section 62, the first connecting shaft 11 and the first sealing plate 12 are both located at the second pipeline 63, the diameter of the first sealing plate 12 is equal to the inner diameter of the second pipeline 63; the inner diameter of the second pipeline 63 is equal to the inner diameter of the first pipeline 63.

[0066] In this embodiment, the pulverizing chamber 6 consists of a pulverizing chamber body 61, a second connecting section 62, and a second pipeline 63. A pulverizing roller 8 and a fourth connecting shaft 7 are positioned at the pulverizing chamber body 61, allowing large fuel particles to be compressed and sheared into smaller fuel particles. A second connecting section 62, tapered in shape, is connected to the lower end of the pulverizing chamber body 61. A second pipeline 63 is connected below the second connecting section 62, with its other end connected to a measuring cylinder 5, thus connecting the pulverizing chamber 6 and the measuring cylinder 5. After the large fuel particles are pulverized in the pulverizing chamber 6, the smaller fuel particles can smoothly transition from the second connecting section 62 to the second pipeline 63, preventing fuel accumulation and blockage at the connection between the second connecting section 62 and the second pipeline 63. The fuel is then transported to the measuring cylinder 5 through the second pipeline 63, allowing fuel to accumulate within the measuring cylinder 5.

[0067] Both the first connecting shaft 11 and the first sealing plate 12 are located at the second pipeline 63, and the diameter of the first sealing plate 12 is equal to the inner diameter of the second pipeline 63. This allows the first sealing plate 12 to effectively seal the second pipeline 63, preventing fuel in the crushing chamber 6 from continuously falling into the measuring cylinder 5 during fuel metering, thus avoiding excess fuel delivered to the feed pipe 1 and potentially causing incomplete combustion due to excessive fuel in the combustion chamber. Furthermore, keeping the inner diameter of the second pipeline 63 equal to the inner diameter of the first pipeline 53 ensures consistent fuel transmission channel diameters, preventing fuel residue due to different pipeline diameters. For example, if the inner diameter of the second pipeline 63 is larger than that of the first pipeline 53, after fuel is successfully transferred from the second pipeline 63 to the measuring cylinder 5, the smaller inner diameter of the first pipeline 53 may cause fuel to become stuck in the first pipeline 53, preventing smooth transfer to the feed pipe 1 and affecting the amount of fuel delivered to the combustion chamber.

[0068] Because the pulverized fuel naturally falls into the measuring cylinder 5, the fuel accumulates unevenly and is relatively loose, taking up a lot of space. Therefore, in conjunction with [see also...] Figure 6In one embodiment, the system further includes a third motor 20 mounted above the measuring cylinder 5; a third connecting shaft 19, one end of which is connected to the output shaft of the third motor 20, and the other end of which is rotatably connected to one side of the measuring cylinder 5; and a collision roller 21 fixedly connected to the third connecting shaft 19. Further, the collision roller 21 has an elliptical cross-section and is eccentrically positioned on the third connecting shaft 19.

[0069] In this embodiment, a third motor 20 is also installed above the measuring cylinder 5. The output shaft of the third motor 20 is connected to one end of the third connecting shaft 19, while the other end of the third connecting shaft 19 is rotatably connected to a bracket on one side of the measuring cylinder 5. The third motor 20 provides the driving force, so that the third connecting shaft 19 and the output shaft of the third motor 20 can rotate synchronously. A collision roller 21 is fixedly connected to the third connecting shaft 19. The cross-section of the collision roller 21 is elliptical, and the collision roller 21 is eccentrically set on the third connecting shaft 19, so that the intersection point of the collision roller 21 and the third connecting shaft 19 is not the same as the center of the collision roller 21. When the fuel enters the measuring cylinder 5, the third motor 20 is controlled to work to drive the third connecting shaft 19 to rotate. When the third connecting shaft 19 rotates, it drives the collision roller 21 to rotate, so that the end of the collision roller 21 away from the third connecting shaft 19 collides with the measuring cylinder 5, causing the measuring cylinder 5 to vibrate. This allows the fuel to be more compacted inside the measuring cylinder 5, making the crushed fuel more even after entering the measuring cylinder 5, and making the distribution of fuel inside the measuring cylinder 5 more reasonable.

[0070] Secondly, such as Figure 7 As shown, this embodiment of the invention also provides a control method for a quantitative feeding device, applied to the quantitative feeding device described above, comprising the following steps:

[0071] Step S100: Obtain the amount of fuel in measuring cylinder 5;

[0072] Step S200: In response to the fuel quantity meeting the target demand, control the rotation of the second connecting shaft 13 and the first connecting shaft 11;

[0073] Step S300: Based on the rotation of the second connecting shaft 13 and the first connecting shaft 11, control the second sealing plate 14 and the first sealing plate 12 to flip, so that the pipeline between the measuring cylinder 5 and the conveying pipe 1 is connected, and the pipeline between the measuring cylinder 5 and the crushing chamber 6 is closed.

[0074] In this embodiment, when the fuel enters the interior of the crushing chamber 6, the fourth motor 10 operates to provide driving force to drive one of the gears 9 to rotate; the gear 9 transmits the driving force to the gear 9 meshing with it so that the two gears 9 can rotate synchronously; further, the rotation of the two gears 9 drives the two fourth connecting shafts 7 to rotate, and causes the two crushing rollers 8 fixedly connected to the two fourth connecting shafts 7 to rotate relative to each other, so that the crushing rollers 8 crush the fuel.

[0075] The amount of fuel in the measuring cylinder 5 is detected in real time by a visual sensor or a position sensor. For example, the volume of fuel in the measuring cylinder 5 is determined to determine the amount of fuel in the measuring cylinder 5. When the sensor detects that the amount of fuel in the measuring cylinder 5 meets the target requirement, the second motor 16 drives the first connecting member 15 and the second connecting shaft 13 to rotate. When the first connecting member 15 rotates, the transmission member 17 drives the second connecting member 18 to rotate, so that the second connecting member 18 drives the first connecting shaft 11 to rotate. This causes the first connecting shaft 11 to drive the first sealing plate 12 to flip until the first sealing plate 12 is in a horizontal state, thereby closing the pipeline between the measuring cylinder 5 and the crushing chamber 6. When the second connecting shaft 13 rotates, it causes the second sealing plate 14 to flip until the second sealing plate 14 is in a vertical state, thereby connecting the pipeline between the measuring cylinder 5 and the conveying pipe 1. This allows the fuel in the measuring cylinder 5, which meets the target demand, to be transferred to the inside of the conveying pipe 1. The first motor 3 then operates to drive the screw feeder 2 to rotate, allowing the screw feeder 2 to transfer the fuel to the inside of the spray pipe 4. The fan on the spray pipe 4 blows the fuel into the boiler, thus achieving quantitative feeding. This avoids situations where there is too much or too little fuel in the combustion chamber due to directly transferring the pulverized fuel into the conveying pipe 1, ensuring a continuous and stable supply of fuel to the combustion chamber. This ensures complete combustion of the fuel in the combustion chamber and guarantees the power generation efficiency of the power plant boiler, enabling stable operation of the power plant boiler. The target demand can be set according to actual usage requirements.

[0076] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0077] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A feeding device for quantitative material feeding, characterized in that, include: Material conveying pipe (1); The spiral feed rod (2) is rotatably installed inside the feed pipe (1); The first motor (3) has its output shaft connected to the spiral feed rod (2) in a transmission manner. The spray pipe (4) is installed at one end of the conveying pipe (1) and located below the conveying pipe (1), and is connected to the conveying pipe (1); The measuring cylinder (5) is installed at one end of the conveying pipe (1) away from the spray pipe (4) and above the conveying pipe (1), and is connected to the conveying pipe (1); The grinding chamber (6) is installed above the measuring cylinder (5) and is connected to the measuring cylinder (5); the lower end of the grinding chamber (6) is rotatably connected to the first connecting shaft (11), and the first sealing plate (12) is fixedly connected to the first connecting shaft (11); The lower end of the measuring cylinder (5) is rotatably connected to a second connecting shaft (13), and a second sealing plate (14) is fixedly connected to the second connecting shaft (13).

2. The feeding device for quantitative feeding according to claim 1, characterized in that, It also includes a second motor (16) and a first connector (15), one end of the second connecting shaft (13) extends to the outside of the measuring cylinder (5), the first connector (15) is fixedly connected to the second connecting shaft (13) located outside the measuring cylinder (5), and the output shaft of the second motor (16) is connected to the first connector (15) in a transmission connection.

3. The feeding device for quantitative feeding according to claim 2, characterized in that, It also includes a second connector (18), one end of the first connecting shaft (11) extending to the outside of the crushing chamber (6), and the second connector (18) is fixedly connected to the first connecting shaft (11) located outside the crushing chamber (6); The transmission component (17) is connected to the first connector (15) and the second connector (18) respectively, and is used to make the first connector (15) and the second connector (18) drive each other.

4. The feeding device for quantitative feeding according to claim 1, characterized in that, The measuring cylinder (5) includes a measuring cylinder body (51), a first connecting section (52), and a first pipeline (53); the measuring cylinder body (51) and the first pipeline (53) are respectively connected to the two ends of the first connecting section (52), the second connecting shaft (13) and the second sealing plate (14) are both located at the first pipeline (53), and the diameter of the second sealing plate (14) is equal to the inner diameter of the first pipeline (53).

5. The feeding device for quantitative feeding according to claim 4, characterized in that, The grinding chamber (6) includes a grinding chamber body (61), a second connecting section (62), and a second pipeline (63); the grinding chamber body (61) and the second pipeline (63) are respectively connected to the two ends of the second connecting section (62), the first connecting shaft (11) and the first sealing plate (12) are both located at the second pipeline (63), the diameter of the first sealing plate (12) is equal to the inner diameter of the second pipeline (63), and the inner diameter of the second pipeline (63) is equal to the inner diameter of the first pipeline (53).

6. The feeding device for quantitative feeding according to claim 1, characterized in that, It also includes a third motor (20), which is installed above the measuring cylinder (5); The third connecting shaft (19) has one end connected to the output shaft of the third motor (20) and the other end rotatably connected to one side of the measuring cylinder (5). The collision roller (21) is fixedly connected to the third connecting shaft (19).

7. The feeding device for quantitative feeding according to claim 6, characterized in that, The collision roller (21) has an elliptical cross-section and is eccentrically mounted on the third connecting shaft (19).

8. The feeding device for quantitative feeding according to claim 1, characterized in that, It also includes a pair of fourth connecting shafts (7) and a pair of crushing rollers (8). The pair of fourth connecting shafts (7) are rotatably connected in the crushing chamber (6), and the pair of crushing rollers (8) are respectively mounted on the fourth connecting shafts (7), and the crushing rollers (8) are coaxial with the fourth connecting shafts (7).

9. The feeding device for quantitative feeding according to claim 8, characterized in that, It also includes a fourth motor (10) and a pair of gears (9), one end of the fourth connecting shaft (7) extends to the outside of the crushing chamber (6), the pair of gears (9) are respectively fixedly connected to the fourth connecting shaft (7) located outside the crushing chamber (6), and the pair of gears (9) are meshed; the output shaft of the fourth motor (10) is drivenly connected to one of the gears (9).

10. A control method for a quantitative feeding device, characterized in that, The feeding device for quantitative feeding as described in any one of claims 1-9 comprises: Obtain the amount of fuel in the measuring cylinder (5); In response to the fuel quantity meeting the target demand, the second connecting shaft (13) and the first connecting shaft (11) are controlled to rotate; Based on the rotation of the second connecting shaft (13) and the first connecting shaft (11), the second sealing plate (14) and the first sealing plate (12) are controlled to flip, so that the pipeline between the measuring cylinder (5) and the conveying pipe (1) is connected, and the pipeline between the measuring cylinder (5) and the crushing chamber (6) is closed.

Images