A quantitative device for a boiler powder feeder

Abstract

The utility model discloses a kind of quantitative devices for boiler powder feeder, it is related to the technical field of feeding, and it includes: storage hopper, the inner side of storage hopper is provided with broken knot subassembly, and the outer surface of storage hopper is provided with observation port;Quantitative component, quantitative component is set to the inner side of storage hopper.The utility model makes two-way screw rod rotate by rotating hand wheel, to make two double-inclined surface push block reverse movement, when two double-inclined surface push block respectively move towards the both ends of two-way screw rod, it will be through the sliding block in sliding groove and slide to push two bottom plate on triangular block towards the inner side of feeding groove, to reduce the space and capacity of powder material in the inner side of feeding groove, reverse rotation hand wheel makes bottom plate move towards the depth of feeding groove, increase the space and capacity of powder material in the inner side of feeding groove, the powder material amount of feeding groove is adjusted, change the powder amount of first feeding, reduce the limitation of device use.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology, specifically to a quantitative device for a boiler pulverizer. Background Technology

[0002] A boiler is a key piece of equipment that converts the heat energy generated by fuel combustion into usable heat energy, and its stable operation depends on a continuous and precise fuel supply. As the core feeding equipment of a coal-fired boiler, the boiler feeder's function is to stably and controllably deliver pulverized coal into the furnace for combustion at a set rate. The accuracy and reliability of the metering device directly determine the boiler's combustion efficiency, operational stability, and pollutant emission levels.

[0003] In existing technologies, rotary quantitative feeding devices are quite common. These typically employ a grooved rotating roller that rotates within a hopper. When the groove is at the top, it receives the material; when it rotates to the bottom, it throws the material out, thus achieving intermittent quantitative feeding. However, such devices have significant drawbacks: firstly, the groove volume is usually fixed, making it impossible to adjust the single feed rate in real time according to boiler load changes, resulting in poor flexibility and high limitations; secondly, powdery materials, especially pulverized coal, are highly susceptible to moisture absorption and agglomeration. Agglomerated material easily clogs the fixed-volume groove, leading to feeding interruptions, uneven feeding, or inaccurate metering, severely affecting the stability of boiler operation.

[0004] Therefore, there is an urgent need for a quantitative device that can effectively break up agglomerated powder and flexibly and accurately adjust the amount of powder fed at one time. Utility Model Content

[0005] The purpose of this utility model is to provide a quantitative device for a boiler pulverizer, which solves the problem that quantitative feeding devices have a fixed feeding capacity at one time, and cannot adjust the amount of powder fed at one time according to the needs of the boiler pulverizer, thus having high limitations in use.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: a metering device for a boiler pulverizer, comprising: A storage hopper, wherein a bridging component is provided on the inner side of the storage hopper, and an observation port is provided on the outer surface of the storage hopper; A metering component is provided inside the storage hopper. The metering component includes a rotating roller that rotates inside the storage hopper and a geared motor fixed to the outer surface of the storage hopper. One end of the output shaft of the geared motor is fixedly connected to one end of the rotating roller. The rotating roller is provided with two feed slots and an inner cavity. An adjusting component is provided inside the inner cavity. A capacity line observation window is provided at one end of the rotating roller.

[0007] Preferably, the adjusting component includes a bidirectional lead screw that rotates inside the inner cavity and a base plate that slides inside the two feed troughs respectively. The outer surface of the bidirectional lead screw is threaded with two double-inclined push blocks. Two triangular blocks are fixed on each of the two base plates. The outer surface of each of the two triangular blocks is provided with a groove. A connecting block slides on the inner side of each of the two grooves. The two connecting blocks are fixedly connected to the two double-inclined push blocks respectively. One end of the bidirectional lead screw extends to the outside of the storage hopper and is fixed with a handwheel. Both of the base plates are equipped with pusher components, and the inner sides of the two triangular blocks are provided with inner grooves.

[0008] Preferably, the pusher includes two sliding plates, which slide in two inner grooves respectively. Both sliding plates extend to the outside of the bottom plate, and a gravity pushing plate is fixed between the two sliding plates.

[0009] Preferably, the briquettes assembly includes a drive unit and two briquettes. The drive unit includes two gears rotating on the outer surface of the storage hopper and a servo motor. The two gears mesh with each other. One end of the output shaft of the servo motor is fixedly connected to one of the gears. The two briquettes are both disposed on the inner side of the storage hopper and are respectively connected to the two gears.

[0010] Preferably, the crushing component includes two large toothed rings fixed to the inner wall of the storage hopper, two small toothed rings fixed to the inner wall of the storage hopper, and a rotating rod rotating inside the storage hopper. One end of the rotating rod extends to the outer side of the storage hopper and is fixedly connected to the gear. Both ends of the rotating rod are fixed with mounting plates, and a crushing component is provided between the two mounting plates.

[0011] Preferably, the crushing component includes two external gears and two internal gears rotating on two mounting plates, and two external crushing rollers and two internal crushing rollers rotating between the two mounting plates. The two external gears on the same mounting plate mesh with each other, and the two internal gears on the same mounting plate mesh with each other. The two ends of the external crushing rollers are fixedly connected to the external gears on the two mounting plates, and the two ends of the internal crushing rollers are fixedly connected to the internal gears on the two mounting plates. One of the external gears meshes with a large toothed ring, and one of the internal gears meshes with a small toothed ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Rotating the handwheel causes the bidirectional screw to rotate, which in turn moves the two double-inclined push blocks in opposite directions. As the two double-inclined push blocks move toward the two ends of the bidirectional screw, they slide in the chute through the connecting block, pushing the triangular blocks on the two base plates toward the inside of the feed chute. This reduces the space and capacity of the powder inside the feed chute. Reversing the handwheel moves the base plate deeper into the feed chute, increasing the space and capacity of the powder inside the feed chute. This allows for adjustment of the amount of powder in the feed chute, changing the amount of powder fed at one time, and reducing the limitations of the device's use. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is an exploded sectional view of the present invention.

[0015] Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0016] Figure 4 for Figure 2 Enlarged schematic diagram of section B.

[0017] The numbers in the image represent: 1. Storage hopper; 2. Crushing assembly; 21. Gear; 22. Servo motor; 23. Large gear ring; 24. Small gear ring; 25. Rotating rod; 26. Mounting plate; 27. External gear; 28. Internal gear; 29. ​​External crushing roller; 210. Internal crushing roller; 3. Observation port; 4. Quantitative assembly; 41. Rotating roller; 42. Gear motor; 43. Feed chute; 44. Inner cavity; 45. Bidirectional lead screw; 46. Base plate; 47. Double inclined extrusion block; 48. Triangular block; 49. Slide groove; 410. Connecting block; 411. Handwheel; 412. Inner groove; 413. Sliding plate; 414. Gravity extrusion plate; 415. Capacity line observation window. Detailed Implementation

[0018] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0019] This embodiment provides a technical solution: a metering device for a boiler pulverizer, such as... Figures 1-4 As shown, it includes a storage hopper 1, a clogging component 2 disposed inside the storage hopper 1, and a metering component 4 disposed inside the storage hopper 1. The clogging component 2 is disposed above the metering component 4 and is used to break up the clumps of raw materials. An observation port 3 is provided on the outer surface of the storage hopper 1.

[0020] The briquettes assembly 2 includes a drive unit and two briquettes. The drive unit includes two gears 21 that rotate on the outer surface of the storage hopper 1 and a servo motor 22. The two gears 21 mesh with each other. One end of the output shaft of the servo motor 22 is fixedly connected to the center point of one of the gears 21. The two briquettes are both located inside the storage hopper 1. The two briquettes are connected to the two gears 21 respectively. Driven by the two meshing gears 21, the two briquettes rotate in opposite directions.

[0021] The crushing component includes two large toothed rings 23 fixed to the inner wall of the storage hopper 1, two small toothed rings 24 fixed to the inner wall of the storage hopper 1, and a rotating rod 25 rotating inside the storage hopper 1. The two large toothed rings 23 and the two small toothed rings 24 are arranged opposite to each other. One end of the rotating rod 25 extends to the outer side of the storage hopper 1 and is fixedly connected to the gear 21. Both ends of the rotating rod 25 are fixed with mounting plates 26, and two crushing components are arranged between the two mounting plates 26.

[0022] The crushing component includes two external gears 27 and two internal gears 28 that rotate on two mounting plates 26 respectively, and two external crushing rollers 29 and two internal crushing rollers 210 that rotate between the two mounting plates 26. The two external gears 27 located on the same mounting plate 26 mesh with each other, and the two internal gears 28 located on the same mounting plate 26 mesh with each other. The two ends of the external crushing rollers 29 are fixedly connected to the external gears 27 on the two mounting plates 26 respectively, and the two ends of the internal crushing rollers 210 are fixedly connected to the internal gears 28 on the two mounting plates 26 respectively. One of the external gears 27 meshes with a large toothed ring 23, and one of the internal gears 28 meshes with a small toothed ring 24.

[0023] When the rotating rod 25 rotates, the mounting plate 26 will drive the external gear 27, internal gear 28, external crushing roller 29 and internal crushing roller 210 to rotate. The external gear 27, which meshes with the large tooth ring 23, will rotate on its own axis and drive another external gear 27 meshing with it to rotate in the opposite direction. The internal gear 28, which meshes with the small tooth ring 24, will rotate on its own axis and drive another internal gear 28 meshing with it to rotate in the opposite direction.

[0024] The quantitative component 4 includes a rotating roller 41 that rotates inside the storage hopper 1 and a reduction motor 42 that is fixed to the outer surface of the storage hopper 1. One end of the output shaft of the reduction motor 42 is fixedly connected to one end of the rotating roller 41. Two equally spaced (i.e., on the same vertical line) feed troughs 43 are provided on the rotating roller 41. An inner cavity 44 is provided on the rotating roller 41, which is located between the two feed troughs 43. An adjustment component for adjusting the size of the filling space inside the feed trough 43 is provided on the inner side of the inner cavity 44. A capacity line observation window 415 is provided at one end of the rotating roller 41.

[0025] The capacity line observation window 415 is marked with scale lines to indicate the position of the base plate 46 and the corresponding volume of the feed trough 43.

[0026] The adjusting component includes a bidirectional lead screw 45 that rotates inside the inner cavity 44 and a base plate 46 that slides inside the two feed troughs 43 respectively. The base plate 46 slides in the feed troughs 43 in a straight line along the opening direction of the feed troughs 43. The outer surface of the bidirectional lead screw 45 is threaded with two double-inclined push blocks 47. Two triangular blocks 48 are fixed on each of the two base plates 46. The outer surface of each of the two triangular blocks 48 is provided with a groove 49. A connecting block 410 slides inside each of the two grooves 49. The two connecting blocks 410, which are indirectly located on the same base plate 46, are fixedly connected to the two double-inclined push blocks 47 respectively.

[0027] One end of the bidirectional lead screw 45 extends to the outside of the storage hopper 1 and is fixed with a handwheel 411. The handwheel 411 can be equipped with a rotation arrow and the result of the rotation arrow is marked. For example, if the arrow points to the mark "small", it means that rotating the handwheel 411 in this direction will move the bottom plate 46 toward the opening of the feed trough 43 and reduce the capacity of the feed trough 43. Rotating the handwheel 411 in the opposite direction means that the capacity of the feed trough 43 can be increased. Both bottom plates 46 are equipped with pushers. The inner sides of the two triangular blocks 48 are provided with inner grooves 412. The pushers include two sliding plates 413. The two sliding plates 413 slide in the two inner grooves 412 respectively. Both sliding plates 413 extend to the outside of the bottom plate 46. A gravity pushing plate 414 is fixed between the two sliding plates 413 on the same horizontal plane.

[0028] In use: Raw materials are fed into the storage hopper 1. The servo motor 22 is started, driving the gear 21 connected to it to rotate. This gear 21, in turn, drives another gear 21 meshing with it to rotate in the opposite direction. The rotation of the two gears 21 will respectively drive the rotating rod 25 connected to them to rotate. The rotation of the rotating rod 25 will drive the two mounting plates 26 to rotate. When the mounting plates 26 rotate, they will drive the outer gear 27, inner gear 28, outer crushing roller 29, and inner crushing roller 210 to rotate. Among them, the gear meshing with the large toothed ring 23... An external gear 27 rotates around the inner side of the large tooth ring 23 under the meshing teeth, and drives another external gear 27 meshing with it to rotate in the opposite direction. An internal gear 28 meshing with the small tooth ring 24 rotates around the inner side of the small tooth ring 24 under the meshing teeth, and drives another internal gear 28 meshing with it to rotate in the opposite direction. In this way, the two outer crushing rollers 29 rotate in opposite directions and the two inner crushing rollers 210 rotate in opposite directions, crushing and dispersing the clumps of powder in the storage hopper 1.

[0029] The rotation of the geared motor 42 drives the rotating roller 41 to rotate, which in turn rotates one of the feed troughs 43 to face upwards. When facing upwards, the powder in the storage hopper 1 will fall into the feed trough 43. The geared motor 42 drives the rotating roller 41 to continue rotating, and the rotating roller 41 rotates the feed trough 43 filled with powder to face downwards. The other feed trough 43 will be rotated to face upwards to continue filling with powder. At this time, the gravity pushing plate 414 in the feed trough 43 with its opening facing downwards will be pushed by its own weight. As the ground moves downwards due to gravity, the powder in the feed trough 43 is pushed out, preventing the powder from sticking to the feed trough 43 and not being discharged due to certain reasons (such as moisture or accumulation). Later, when the feed trough 43 is rotated to face upwards, the gravity pushing plate 414 will automatically fall back into the feed trough 43 under the action of gravity and stick to the bottom plate 46. When the gravity pushing plate 414 slides under the influence of gravity, it will be limited by the sliding plate 413 to keep it sliding vertically, preventing the gravity pushing plate 414 from not being able to slide back into the feed trough 43.

[0030] According to the feeding requirements, the amount of powder in the feeding trough 43 can be adjusted to change the amount of powder fed at one time. Directly rotating the handwheel 411 causes the bidirectional lead screw 45 to rotate. The rotation of the bidirectional lead screw 45 causes the two double-inclined pushing blocks 47 to move in opposite directions. When the two double-inclined pushing blocks 47 move towards the two ends of the bidirectional lead screw 45 respectively, they will slide in the slide groove 49 through the connecting block 410, pushing the triangular blocks 48 on the two base plates 46 towards the inside of the feeding trough 43, thereby reducing the space and capacity of the powder in the inside of the feeding trough 43. Reverse rotation of the handwheel 411 causes the base plate 46 to move deeper into the feeding trough 43, increasing the space and capacity of the powder in the inside of the feeding trough 43.

[0031] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A metering device for a boiler pulverizer, characterized in that, include: A storage hopper (1) is provided with a bridging component (2) on its inner side and an observation port (3) is provided on the outer surface of the storage hopper (1). A metering component (4) is provided inside the storage hopper (1). The metering component (4) includes a rotating roller (41) rotating inside the storage hopper (1) and a speed reduction motor (42) fixed to the outer surface of the storage hopper (1). One end of the output shaft of the speed reduction motor (42) is fixedly connected to one end of the rotating roller (41). Two feed grooves (43) are provided on the rotating roller (41). An inner cavity (44) is provided on the rotating roller (41). An adjusting component is provided inside the inner cavity (44). A capacity line observation window (415) is provided at one end of the rotating roller (41).

2. The metering device for a boiler pulverizer as described in claim 1, characterized in that, The adjusting component includes a bidirectional lead screw (45) that rotates inside the inner cavity (44) and a base plate (46) that slides inside the two feed troughs (43). The outer surface of the bidirectional lead screw (45) is threaded with two double-inclined push blocks (47). Two triangular blocks (48) are fixed on each of the two base plates (46). The outer surface of each of the two triangular blocks (48) is provided with a sliding groove (49). A connecting block (410) slides inside each of the two sliding grooves (49). The two connecting blocks (410) are fixedly connected to the two double-inclined push blocks (47) respectively. One end of the bidirectional lead screw (45) extends to the outside of the storage hopper (1) and is fixed with a handwheel (411). Both of the two base plates (46) are provided with pushers, and the inner sides of the two triangular blocks (48) are provided with inner grooves (412).

3. The metering device for a boiler pulverizer as described in claim 2, characterized in that, The pusher includes two sliding plates (413), which slide in two inner grooves (412) respectively. Both sliding plates (413) extend to the outside of the bottom plate (46), and a gravity pushing plate (414) is fixed between the two sliding plates (413).

4. The metering device for a boiler pulverizer as described in claim 3, characterized in that, The briquetting assembly (2) includes a drive unit and two briquetting components. The drive unit includes two gears (21) rotating on the outer surface of the storage hopper (1) and a servo motor (22). The two gears (21) mesh with each other. One end of the output shaft of the servo motor (22) is fixedly connected to one of the gears (21). The two briquetting components are both located on the inner side of the storage hopper (1) and are respectively connected to the two gears (21).

5. The metering device for a boiler pulverizer as described in claim 4, characterized in that, The crushing component includes two large toothed rings (23) fixed to the inner wall of the storage hopper (1), two small toothed rings (24) fixed to the inner wall of the storage hopper (1), and a rotating rod (25) rotating inside the storage hopper (1). One end of the rotating rod (25) extends to the outer side of the storage hopper (1) and is fixedly connected to the gear (21). Both ends of the rotating rod (25) are fixed with mounting plates (26), and a crushing component is provided between the two mounting plates (26).

6. The metering device for a boiler pulverizer as described in claim 5, characterized in that, The crushing component includes two external gears (27) and two internal gears (28) rotating on two mounting plates (26) respectively, and two external crushing rollers (29) and two internal crushing rollers (210) rotating between the two mounting plates (26). The two external gears (27) on the same mounting plate (26) mesh with each other, and the two internal gears (28) on the same mounting plate (26) mesh with each other. The two ends of the external crushing rollers (29) are fixedly connected to the external gears (27) on the two mounting plates (26) respectively, and the two ends of the internal crushing rollers (210) are fixedly connected to the internal gears (28) on the two mounting plates (26) respectively. One of the external gears (27) meshes with a large toothed ring (23), and one of the internal gears (28) meshes with a small toothed ring (24).

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