Device for preventing coal ash from being deposited in discharging process

Abstract

The utility model relates to the technical field of construction equipment, in particular to a device for preventing fly ash from being deposited during discharging, which comprises a mixer main body, an input pipeline is arranged above the mixer main body, a pipe fitting I for feeding gravel is connected onto the input pipeline, and a branch pipe I is communicated with the side wall of the pipe fitting I far away from the output end of the pipe fitting I; the first pipe fitting is connected with a first branch pipe, the input end of the first branch pipe is obliquely and upwards arranged in the direction away from the first pipe fitting from the first pipe fitting, and the input end of the first branch pipe is connected with a second pipe fitting used for feeding coal ash, the second pipe fitting used for conveying coal ash and the first pipe fitting used for conveying gravel are improved, and the output end of the second pipe fitting is communicated with the first pipe fitting through the branch pipe; the coal ash is gathered into the gravel and conveyed into the stirring machine body together with the gravel, invasion of hot steam into the first pipe fitting is reduced, the gravel falling into the first pipe fitting can continuously knock down attachments on the inner side wall of the first pipe fitting, and the skin accumulation phenomenon in the first pipe fitting is avoided.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment technology, and in particular to a device for preventing fly ash from accumulating during material feeding. Background Technology

[0002] Commercial concrete, also known as ready-mixed concrete, requires the use of a mixer to mix cement, sand, fly ash, water, and other materials to produce uniform concrete. The addition of fly ash to concrete is mainly to improve its workability, mechanical properties, and durability. Fly ash is a type of pozzolanic material.

[0003] Currently, the main inlet for pulverized coal on the mixing host is located directly above it. However, during the descent of the pulverized coal ash, the connection between the pulverized coal ash and the pipe is not always tight. That is, as the pulverized coal ash falls into the mixing host, gaps are formed between the pulverized coal ash particles. At this time, the hot steam generated by the mixing host during operation rises and enters the pulverized coal ash discharge pipe through these gaps, eventually forming a sludge layer. As pulverized coal ash is continuously added and the mixing host continues to operate, the sludge layer thickens, which in turn reduces the inner diameter of the pulverized coal ash discharge pipe, making the pulverized coal ash discharge obstructed.

[0004] Based on the above situation, it is necessary to design a device to prevent fly ash from accumulating during discharge to solve the above problems. Utility Model Content

[0005] This invention provides a device to prevent fly ash from accumulating during discharge, thereby solving the problem in the prior art where fly ash is affected by hot steam during the discharge process and forms a certain amount of accumulating material, which leads to obstructed fly ash discharge.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] A device for preventing fly ash accumulation includes a mixer body. An input pipe is provided above the mixer body. A first fitting for feeding sand and gravel is connected to the input pipe. A first branch pipe is connected to the side wall of the first fitting away from its output end. The input end of the first branch pipe is inclined upward from the first fitting away from the first fitting. A second fitting for feeding fly ash is connected to the input end of the first branch pipe. The second fitting is connected to the first fitting through the first branch pipe. A conveying component for conveying fly ash is provided inside the second fitting.

[0008] Preferably, the conveying assembly includes a helical blade, a rotating shaft, and a driving component. The rotating shaft is rotatably connected inside the second pipe fitting, the helical blade is connected to the rotating shaft, and the driving component is used to drive the rotating shaft to rotate.

[0009] Preferably, the driving component includes a housing, a first bevel gear and a second bevel gear rotatably connected inside the housing, a motor, and a drive shaft. The motor is mounted on the outer wall of the second pipe component, the drive shaft is rotatably connected to the housing, the first bevel gear is connected to one end of the rotating shaft, the second bevel gear is connected to the end of the drive shaft away from the motor, and the first bevel gear and the second bevel gear mesh with each other.

[0010] Preferably, a vertical rod is fixedly connected to the inner wall of the first pipe fitting, and a plurality of guide members are connected to the vertical rod. The guide members are used to guide the falling sand and gravel to the inner wall of the first pipe fitting.

[0011] Preferably, the guide member is a tapered body with a diameter that gradually decreases from the output end of the tube to its input end.

[0012] Preferably, the output end of the first pipe fitting is provided with a V-shaped sliding groove plate, and two gate plates are slidably mounted on both ends of the sliding groove plate. The opposite ends of the two gate plates extend into the interior of the first pipe fitting and are in contact with each other.

[0013] Preferably, the outer two sides of the first pipe fitting are respectively provided with telescopic components, and the movable end of the telescopic component is connected to the end of the gate plate away from the first pipe fitting.

[0014] The beneficial effects of this utility model are as follows: by improving the second pipe fitting for conveying fly ash and the first pipe fitting for conveying sand and gravel, the output end of the second pipe fitting is connected to the first pipe fitting through a branch pipe, so that the fly ash is collected into the sand and gravel and transported together into the main body of the mixer. The hot steam of the main body of the mixer will only enter the interior of the first pipe fitting, reducing the intrusion of hot steam into the first pipe fitting. The sand and gravel falling inside the first pipe fitting will continuously knock off the attached materials on its inner wall. The impact force of the falling sand and gravel will prevent the accumulation of scale inside the first pipe fitting. In addition, the falling sand and gravel will also drive the flow of fly ash, preventing the first pipe fitting from becoming blocked. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the prior art of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This utility model Figure 2 Partial structural diagram Figure 1 ;

[0019] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This utility model Figure 2 A schematic diagram of the cross-sectional structure;

[0021] Figure 6 This utility model Figure 2 Partial structural diagram Figure 2 .

[0022] In the diagram, 1. Mixer body; 2. Input pipe; 3. Fitting 1; 4. Branch pipe 1; 5. Fitting 2; 6. Spiral blade; 7. Rotating shaft; 8. Drive component; 9. Housing; 10. Bevel gear 1; 11. Bevel gear 2; 12. Motor; 13. Drive shaft; 14. Vertical rod; 15. Guide component; 16. Slide plate; 17. Gate; 18. Telescopic component; 19. Flow pipe. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0024] Reference Figure 1 The diagram shows a schematic of the prior art features of this utility model. As shown in the diagram, the main body 1 of the mixer is equipped with a sand and gravel feeding pipe 3 and a fly ash feeding pipe 19 above it. The fly ash feeding pipe 19 is located directly above the main body 1 of the mixer. When the main body 1 of the mixer is operating, the steam containing dust generated inside it enters through the flow pipe and eventually adheres to the inner wall of the flow pipe, forming a deposit. As fly ash is continuously added and the mixer operates, the deposit thickens, which leads to a decrease in the inner diameter of the fly ash discharge pipe, making the fly ash discharge obstructed. However, the sand and gravel pipe mainly transports sand and gravel with large particles. The deposit on the inner wall of the sand and gravel feeding pipe 3 is continuously knocked off by the falling sand and gravel. Therefore, the steam does not affect the sand and gravel feeding pipe 3. In order to solve the problem of deposits inside the flow pipe affecting the flow, the following improvements are made.

[0025] Reference Figures 2-6As shown, a device for preventing fly ash accumulation during discharge includes a mixer body 1. An input pipe 2 is provided above the mixer body 1. A pipe fitting 3 for feeding sand and gravel is connected to the input pipe 2. A branch pipe 4 is connected to the side wall of the pipe fitting 3 away from its output end. The input end of the branch pipe 4 is inclined upward from the pipe fitting 3 in a direction away from the pipe fitting 3 to ensure that the material can slide from the input end of the branch pipe 4 to its output end. A second pipe fitting 5 for feeding fly ash is connected to the input end of the branch pipe 4. The second pipe fitting 5 is connected to the pipe fitting 3 through the branch pipe 4. The fly ash conveyed inside the second pipe fitting 5 merges into the sand and gravel conveyed inside the pipe fitting 3, and then they are conveyed together into the mixer body 1. A conveying component for conveying fly ash is provided inside the second pipe fitting 5.

[0026] In use, the main improvements are made to pipe fitting 2 (5) for conveying fly ash and pipe fitting 1 (3) for conveying sand and gravel. The output end of pipe fitting 2 (5) is connected to pipe fitting 1 (3) via a branch pipe, so that the steam from the main body of the mixer 1 does not directly enter the interior of pipe fitting 2 (5) for conveying fly ash. Instead, the steam enters the interior of pipe fitting 1 (3). The sand and gravel falling inside pipe fitting 1 (3) continuously knocks off the steam deposits on its inner wall. The impact force of the falling sand and gravel prevents the accumulation of scale inside pipe fitting 1 (3). During the falling process, the large mass of the sand and gravel also drives the flow of fly ash. Therefore, when fly ash and sand and gravel are both inside pipe fitting 1 (3), no blockage occurs. In this process, because pipe fitting 2 (5) for conveying fly ash has been modified from vertical falling to sliding falling, a conveying component is installed to ensure the normal flow of fly ash inside pipe fitting 2 (5) and prevent blockage.

[0027] The conveying assembly includes a spiral blade 6, a rotating shaft 7, and a driving component 8. The rotating shaft 7 is rotatably connected inside the second pipe fitting 5. The spiral blade 6 is connected to the rotating shaft 7. The driving component 8 is used to drive the rotating shaft 7 to rotate. When the driving component 8 drives the rotating shaft 7 and the spiral blade 6 to rotate, it will convey the fly ash on one end of the spiral blade 6 to the output end of the second pipe fitting 5. The spiral blade 6 can better control the flow of fly ash and prevent fly ash from clogging.

[0028] Specifically, the drive component 8 includes a housing 9, a bevel gear 10 and a bevel gear 11 rotatably connected within the housing 9, a motor 12, and a drive shaft 13. The motor 12 is mounted on the outer wall of the pipe component 2 5. The drive shaft 13 is rotatably connected to the housing 9. The bevel gear 10 is connected to one end of the rotating shaft 7, and the bevel gear 11 is connected to the end of the drive shaft 13 away from the motor 12. The bevel gear 10 and the bevel gear 11 mesh. When the motor 12 is started, the output end of the motor 12 drives the drive shaft 13 to rotate, which in turn drives the bevel gear 11 to rotate. Then, the bevel gear 10 drives the rotating shaft 7 to rotate. During this process, the housing 9 is used to protect the bevel gear 10 and the bevel gear 11 from the influence of fly ash, ensuring their normal operation.

[0029] Reference Figure 5 As shown, further, a vertical rod 14 is fixedly connected to the inner wall of the pipe fitting 3. Several guide members 15 are connected to the vertical rod 14. The guide members 15 are used to guide the falling sand and gravel onto the inner wall of the pipe fitting 3. The guide members 15 are cone-shaped with a diameter that gradually decreases from the output end to the input end of the pipe fitting 3. During the process of the sand and gravel falling from the input end to the output end of the pipe fitting 3, when the sand and gravel hit the surface of the guide member 15, the sand and gravel scatter onto the pipe wall of the pipe fitting 3 after colliding with the guide member 15, thereby using the impact force of the sand and gravel to clean the inner wall of the pipe fitting 3.

[0030] Reference Figure 3-5 As shown, further, the output end of the pipe fitting 3 is provided with a V-shaped sliding plate 16. The overall shape of the sliding plate 16 is such that the middle position of the sliding plate 16 is lower than its two sides, and the two sides of the sliding plate 16 form a certain inclination angle to the middle position. Gates 17 slide at both ends of the sliding plate 16, and the opposite ends of the two gates 17 extend into the interior of the pipe fitting 3 and are in contact. Because the gates 17 are designed according to the shape of the sliding plate 16, the gates 17 have a certain inclination angle. During use, when feeding is no longer required and the pipe fitting 3 needs to be closed, the two gates 17 contact each other, at which point the pipe fitting... When the output end of pipe fitting 3 is in a closed state, the two gates 17 can prevent the steam inside the mixer body 1 from spreading into the interior of pipe fitting 3, thus ensuring the cleanliness of the interior of pipe fitting 3. However, some sand or fly ash may fall onto the gates 17. When it is necessary to connect pipe fitting 3 to the mixer body 1, the two gates 17 are separated. At this time, the sand or fly ash that fell onto the gates 17 will be scraped into the interior of the mixer body 1. When the two gates 17 are in use, the distance between the two gates 17 can control the amount of material conveyed by pipe fitting 3, thereby reducing the gaps between materials and reducing the penetration of steam.

[0031] The outer sides of the pipe fitting 3 are respectively provided with telescopic members 18. The movable end of the telescopic member 18 is connected to the end of the gate plate 17 away from the pipe fitting 3. When in use, the two gate plates 17 are driven by the movable end of the telescopic member 18, and then slide inside the slide plate 16.

Claims

1. A device for preventing fly ash from accumulating during discharge, comprising a mixer body (1), wherein an input pipe (2) is provided above the mixer body (1), characterized in that, The input pipe (2) is connected to a fitting (3) for feeding sand and gravel. A branch pipe (4) is connected to the side wall of the fitting (3) away from its output end. The input end of the branch pipe (4) is inclined upward from the fitting (3) away from the fitting (3). A second fitting (5) for feeding fly ash is connected to the input end of the branch pipe (4). The second fitting (5) is connected to the fitting (3) through the branch pipe (4). A conveying component for conveying fly ash is provided inside the second fitting (5).

2. The device for preventing fly ash accumulation during material feeding according to claim 1, characterized in that, The conveying assembly includes a spiral blade (6), a rotating shaft (7), and a driving component (8). The rotating shaft (7) is rotatably connected inside the second pipe (5). The spiral blade (6) is connected to the rotating shaft (7). The driving component (8) is used to drive the rotating shaft (7) to rotate.

3. The device for preventing fly ash accumulation during material feeding according to claim 2, characterized in that, The drive unit (8) includes a housing (9), a bevel gear one (10) and a bevel gear two (11) rotatably connected in the housing (9), a motor (12), and a drive shaft (13). The motor (12) is located on the outer wall of the pipe component two (5). The drive shaft (13) is rotatably connected to the housing (9). The bevel gear one (10) is connected to one end of the rotating shaft (7). The bevel gear two (11) is connected to the end of the drive shaft (13) away from the motor (12), and the bevel gear one (10) and the bevel gear two (11) mesh with each other.

4. The device for preventing fly ash accumulation during material feeding according to claim 1, characterized in that, A vertical rod (14) is fixedly connected to the inner wall of the pipe fitting (3). Several guides (15) are connected to the vertical rod (14). The guides (15) are used to guide the falling sand and gravel to the inner wall of the pipe fitting (3).

5. The device for preventing fly ash accumulation during material feeding according to claim 4, characterized in that, The guide (15) is a cone-shaped body whose diameter gradually decreases from the output end of the tube (3) toward its input end.

6. The device for preventing fly ash accumulation during material feeding according to claim 1, characterized in that, The output end of the pipe fitting (3) is provided with a V-shaped sliding plate (16), and two ends of the sliding plate (16) are respectively slidable gates (17). The opposite ends of the two gates (17) extend into the interior of the pipe fitting (3) and make contact.

7. The device for preventing fly ash accumulation during material feeding according to claim 6, characterized in that, The outer sides of the first pipe fitting (3) are respectively provided with telescopic components (18), and the movable end of the telescopic component (18) is connected to the end of the gate (17) away from the first pipe fitting (3).

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