Fly ash feeding device of concrete mixing plant

Abstract

The utility model discloses a fly ash feeding device of a concrete mixing plant, which relates to the technical field of fly ash feeding and comprises a conveying cylinder, a spiral shaft is rotatably mounted in the conveying cylinder, a material distributing disc is positioned below a discharging pipe, and a rotary transmission component for driving the material distributing disc to rotate is mounted in a gear box. An air blowing assembly used for blowing air into the spiral shaft is installed on the air conveying cylinder. The distribution disc is driven to rotate through the rotary transmission assembly, fly ash can be effectively dispersed and then fed, meanwhile, the fan blade plates reversely rotate relative to the distribution disc to disperse the fly ash, downward airflow generated by rotation of the fan blade plates can promote directional feeding of the fly ash, the feeding effect of the fly ash is greatly improved, and the feeding efficiency of the fly ash is improved. When the spiral shaft conveys the fly ash, the airflow sprayed from the spray head can play a role in dispersing the fly ash, so that the fly ash is effectively prevented from being gathered, and the conveying smoothness of the fly ash and the dispersing degree of subsequent feeding are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fly ash feeding, in particular to a fly ash feeding device for a concrete mixing plant. Background Art

[0002] Fly ash can be used to produce building materials such as fly ash cement, fly ash bricks, and fly ash aerated concrete, which can improve the strength and durability of the materials and reduce production costs. For example, when making fly ash cement, the use amount of clinker can be reduced, and at the same time, the performance of the cement can be improved, making it more suitable for some special engineering requirements.

[0003] Currently, during the fly ash feeding process, fly ash is conveyed through a screw conveyor. However, during feeding, the fly ash cannot be dispersed, resulting in easy aggregation of fly ash during the feeding process, which is not conducive to the uniform mixing of fly ash into the concrete after feeding. Therefore, in view of the above technical defects of the prior art, a fly ash feeding device for a concrete mixing plant is proposed to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fly ash feeding device for a concrete mixing plant to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fly ash feeding device for a concrete mixing plant includes a conveying cylinder. An inlet hopper communicated with the conveying cylinder is installed at the top of the conveying cylinder, and an outlet pipe communicated with the conveying cylinder is installed at the bottom of the conveying cylinder. A spiral shaft is rotatably installed in the conveying cylinder, and the inside of the spiral shaft is a hollow structure. A driving component for driving the spiral shaft to rotate is installed on the conveying cylinder. A gear box is fixed at the end of the conveying cylinder. A distributing plate is rotatably installed at the bottom of the gear box. A plurality of radial strip holes are formed in the distributing plate, and the distributing plate is located below the outlet pipe. A rotary transmission component for driving the distributing plate to rotate is installed in the gear box. An air conveying cylinder is fixed on the conveying cylinder, and an air blowing component for blowing air into the inside of the spiral shaft is installed on the air conveying cylinder. A plurality of nozzles communicated with the spiral shaft are installed on the side wall of the spiral shaft.

[0007] As an improved scheme of the utility model: The driving component includes a servo motor fixed to the conveying cylinder. The output shaft of the servo motor is coaxially fixed with a driving gear, and a driven gear fixedly sleeved on the spiral shaft is meshed with the driving gear.

[0008] As an improved solution of the present utility model: The air-blowing assembly includes a piston disk that is hermetically and slidably installed in the air delivery cylinder. An air inlet pipe is installed on the air delivery cylinder, and a one-way valve I is installed on the air inlet pipe. A gas collecting cylinder is fixed at the end of the delivery cylinder. The spiral shaft is rotatably installed on the gas collecting cylinder, and the spiral shaft communicates with the inside of the gas collecting cylinder. A gas delivery pipe is installed between the gas collecting cylinder and the air delivery cylinder, and a one-way valve II is installed on the gas delivery pipe.

[0009] As an improved solution of the present utility model: The air-blowing assembly further includes a turntable rotatably installed on the gearbox. A connecting rod is eccentrically hinged on the turntable. One end of the connecting rod away from the turntable is hinged with a sliding rod slidably installed on the air delivery cylinder, and the sliding rod is fixed to the piston disk.

[0010] As an improved solution of the present utility model: The rotary transmission assembly includes a sleeve rotatably installed on the gearbox. The material distribution disk is fixedly sleeved on the sleeve. A rotating shaft is rotatably installed in the sleeve. A driven bevel gear is fixedly sleeved on the rotating shaft and the sleeve. A driving bevel gear meshing with the two driven bevel gears is coaxially fixed on the spiral shaft.

[0011] As an improved solution of the present utility model: The rotating shaft extends downward to the lower part of the material distribution disk, and several fan blade plates are fixed at the lower end of the rotating shaft.

[0012] As an improved solution of the present utility model: The rotating shaft extends upward to the outside of the gearbox, and the upper end of the rotating shaft is coaxially fixed with the turntable.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model drives the material distribution disk to rotate through the rotary transmission assembly, so that the fly ash can be effectively dispersed before feeding. At the same time, the fan blade plates rotate in the opposite direction to the material distribution disk to disperse the fly ash, and the downward air flow generated by the rotation of the fan blade plates can promote the directional feeding of the fly ash, greatly improving the feeding effect of the fly ash. When the spiral shaft conveys the fly ash, the air flow ejected from the nozzle can play a role in dispersing the fly ash, effectively avoiding the aggregation of the fly ash, improving the smoothness of the fly ash conveying and the dispersion degree of the subsequent feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the present utility model Figure 1 is the schematic diagram from a certain perspective;

[0017] Figure 3 is the structural schematic diagram of the present utility model after partial sectioning;

[0018] Figure 4 Schematic connection diagram of components such as the air collecting cylinder, spiral shaft and nozzle in the present utility model;

[0019] Figure 5 Schematic connection diagram of components such as the turntable, rotating shaft, material distributing plate and fan blade plate in the present utility model.

[0020] In the figure: 1 - conveying cylinder, 2 - feed hopper, 3 - air delivery cylinder, 4 - intake pipe, 5 - check valve I, 6 - connecting rod, 7 - turntable, 8 - air collecting cylinder, 9 - driven gear, 10 - driving gear, 11 - material distributing plate, 12 - discharge pipe, 13 - sleeve, 14 - radial strip hole, 15 - sliding rod, 16 - air delivery pipe, 17 - servo motor, 18 - fan blade plate, 19 - check valve II, 20 - piston disc, 21 - spiral shaft, 22 - driven bevel gear, 23 - rotating shaft, 24 - driving bevel gear, 25 - nozzle, 26 - gear box. Specific embodiments

[0021] The technical solutions of the present utility model will be further described in detail below in conjunction with specific embodiments:

[0022] Embodiment 1

[0023] Please refer to Figures 1 - 5 , a fly ash feeding device for a concrete mixing plant, comprising a conveying cylinder 1, a feed hopper 2 communicated with the top of the conveying cylinder 1, a discharge pipe 12 communicated with the bottom of the conveying cylinder 1, a spiral shaft 21 rotatably installed in the conveying cylinder 1, the inside of the spiral shaft 21 being a hollow structure, a driving assembly for driving the rotation of the spiral shaft 21 installed on the conveying cylinder 1, a gear box 26 fixed to the end of the conveying cylinder 1, a material distributing plate 11 rotatably installed at the bottom of the gear box 26, a plurality of radial strip holes 14 formed on the material distributing plate 11, the material distributing plate 11 being located below the discharge pipe 12, a rotation transmission assembly for driving the rotation of the material distributing plate 11 installed in the gear box 26, an air delivery cylinder 3 fixed to the conveying cylinder 1, an air injection assembly for injecting air into the inside of the spiral shaft 21 installed on the air delivery cylinder 3, and a plurality of nozzles 25 communicated with the side wall of the spiral shaft 21. The driving assembly includes a servo motor 17 fixed to the conveying cylinder 1, a driving gear 10 coaxially fixed to the output shaft of the servo motor 17, and a driven gear 9 fixedly sleeved on the spiral shaft 21 meshed with the driving gear 10.

[0024] When this device is in use, the material distribution plate 11 is vertically aligned with the container where the concrete is located. Fly ash to be fed is added into the conveying cylinder 1 through the feeding hopper 2. The servo motor 17 is set to drive the driving gear 10 to rotate, and the driving gear 10 drives the driven gear 9 to rotate, so that the driven gear 9 drives the spiral shaft 21 to rotate and convey the fly ash in the conveying cylinder 1. The fly ash is discharged into the material distribution plate 11 through the discharge pipe 12. As the material distribution plate 11 rotates, the fly ash is evenly discharged from a plurality of radial strip holes 14 to achieve the feeding operation.

[0025] The air-blowing assembly of this device includes a piston disk 20 that is hermetically and slidably installed in the air delivery cylinder 3. An air inlet pipe 4 is installed on the air delivery cylinder 3, and a check valve I5 is installed on the air inlet pipe 4. A gas collecting cylinder 8 is fixed at the end of the conveying cylinder 1. The spiral shaft 21 is rotatably installed on the gas collecting cylinder 8, and the spiral shaft 21 is internally connected to the gas collecting cylinder 8. An air delivery pipe 16 is connected and installed between the gas collecting cylinder 8 and the air delivery cylinder 3, and a check valve II19 is installed on the air delivery pipe 16. The air-blowing assembly also includes a turntable 7 that is rotatably installed on the gearbox 26. An eccentric link 6 is hinged on the turntable 7. One end of the link 6 away from the turntable 7 is hinged to a sliding rod 15 that is slidably installed on the air delivery cylinder 3, and the sliding rod 15 is fixed to the piston disk 20.

[0026] Through the above settings, when the turntable 7 rotates, the turntable 7 can drive the sliding rod 15 to slide through the link 6, and the sliding rod 15 drives the piston disk 20 to reciprocate relative to the air delivery cylinder 3. Under the one-way conduction of the check valve II19 and the check valve I5, external air is transported to the inside of the spiral shaft 21 through the air delivery cylinder 3, the air delivery pipe 16, and the gas collecting cylinder 8, and finally the air is blown into the conveying cylinder 1 from the nozzle 25, effectively promoting the dispersion of the pulverized coal ash in the conveying cylinder 1, avoiding accumulation during the conveying process, and improving the discharge dispersion degree of the pulverized coal ash.

[0027] Embodiment 2

[0028] Please refer to Figures 1 - 5 , on the basis of Embodiment 1, in addition, the rotary transmission assembly of this device includes a sleeve 13 that is rotatably installed on the gearbox 26. The material distribution plate 11 is fixedly sleeved on the sleeve 13. A rotary shaft 23 is rotatably installed in the sleeve 13. A driven bevel gear 22 is fixedly sleeved on the rotary shaft 23 and the sleeve 13. A driving bevel gear 24 that meshes with the two driven bevel gears 22 is coaxially fixed on the spiral shaft 21.

[0029] Among them, the rotary shaft 23 extends downward to the lower part of the material distribution plate 11, and a plurality of fan blades 18 are fixed to the lower end of the rotary shaft 23. The rotary shaft 23 extends upward to the outside of the gearbox 26, and the upper end of the rotary shaft 23 is coaxially fixed to the turntable 7.

[0030] With the above settings, when the spiral shaft 21 rotates, the spiral shaft 21 drives the driving bevel gear 24 to rotate. The driving bevel gear 24 drives the two driven bevel gears 22 engaged therewith to rotate. The driven bevel gears 22 drive the rotating shaft 23 and the sleeve 13 to rotate in opposite directions, so that the material distributing plate 11 and the fan blade plate 18 rotate in opposite directions, enabling the fly ash to be discharged more dispersedly and evenly, and greatly improving the feeding effect of the fly ash.

[0031] In summary, in the present utility model, the material distributing plate 11 is driven to rotate by the rotation transmission assembly, so that the fly ash can be effectively dispersed before feeding. At the same time, the fan blade plate 18 rotates in the opposite direction relative to the material distributing plate 11 to disperse the fly ash, and the downward air flow generated by the rotation of the fan blade plate 18 can promote the directional feeding of the fly ash, greatly improving the feeding effect of the fly ash. When the spiral shaft 21 conveys the fly ash, the air flow ejected from the nozzle 25 can play a role in dispersing the fly ash, effectively avoiding the aggregation of the fly ash, and improving the conveying smoothness of the fly ash and the dispersion degree of the subsequent feeding.

Claims

1. A fly ash feeding device for a concrete mixing station, comprising a conveying cylinder (1), a feed hopper (2) communicated with the top of the conveying cylinder (1) is installed, and a discharge pipe (12) communicated with the bottom of the conveying cylinder (1) is installed. It is characterized in that, A spiral shaft (21) is rotatably installed inside the conveying cylinder (1). The inside of the spiral shaft (21) is a hollow structure. A driving assembly for driving the rotation of the spiral shaft (21) is installed on the conveying cylinder (1). A gear box (26) is fixed at the end of the conveying cylinder (1). A distributing plate (11) is rotatably installed at the bottom of the gear box (26). A number of radial strip holes (14) are formed in the distributing plate (11). The distributing plate (11) is located below the discharge pipe (12). A rotary transmission assembly for driving the rotation of the distributing plate (11) is installed inside the gear box (26). An air conveying cylinder (3) is fixed on the conveying cylinder (1). An air blowing assembly for blowing air into the inside of the spiral shaft (21) is installed on the air conveying cylinder (3). A number of spray nozzles (25) communicating with the spiral shaft (21) are installed on the side wall of the spiral shaft (21).

2. The fly ash feeding device for a concrete mixing plant according to claim 1, wherein, The driving assembly includes a servo motor (17) fixed to the conveying cylinder (1). A driving gear (10) is coaxially fixed to the output shaft of the servo motor (17). A driven gear (9) fixedly sleeved on the spiral shaft (21) is engaged with the driving gear (10).

3. The fly ash feeding device of a concrete mixing plant according to claim 1, characterized in that, The air blowing assembly includes a piston disc (20) slidably installed in the air conveying cylinder (3) in a sealed manner. An air inlet pipe (4) is installed on the air conveying cylinder (3). A check valve I (5) is installed on the air inlet pipe (4). An air collecting cylinder (8) is fixed at the end of the conveying cylinder (1). The spiral shaft (21) is rotatably installed on the air collecting cylinder (8). The spiral shaft (21) communicates with the inside of the air collecting cylinder (8). An air conveying pipe (16) is installed between the air collecting cylinder (8) and the air conveying cylinder (3) in a communicating manner. A check valve II (19) is installed on the air conveying pipe (16).

4. A fly ash feeding device for a concrete mixing plant according to claim 3, characterized in that, The air blowing assembly further includes a turntable (7) rotatably installed on the gear box (26). A connecting rod (6) is eccentrically hinged to the turntable (7). One end of the connecting rod (6) away from the turntable (7) is hinged to a sliding rod (15) slidably installed on the air conveying cylinder (3). The sliding rod (15) is fixed to the piston disc (20).

5. The fly ash feeding device of a concrete mixing plant according to claim 4, characterized in that, The rotary transmission assembly includes a sleeve (13) rotatably installed on the gear box (26). The distributing plate (11) is fixedly sleeved on the sleeve (13). A rotary shaft (23) is rotatably installed inside the sleeve (13). A driven bevel gear (22) is fixedly sleeved on the rotary shaft (23) and the sleeve (13). A driving bevel gear (24) engaged with the two driven bevel gears (22) is coaxially fixed to the spiral shaft (21).

6. The fly ash feeding device of a concrete mixing plant according to claim 5, characterized in that, The rotary shaft (23) extends downward to the lower part of the distributing plate (11). A number of fan blades (18) are fixed to the lower end of the rotary shaft (23).

7. The fly ash feeding device for a concrete mixing plant according to claim 5, characterized in that, The rotary shaft (23) extends upward to the outside of the gear box (26). The upper end of the rotary shaft (23) is coaxially fixed to the turntable (7).

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