Mechanism capable of quantitatively adding fly ash
By combining the ash box, the quantitative conveying system and the belt conveyor, the quantitative addition of dust collector ash is achieved, which solves the problem of improper dust collector ash addition ratio, improves the combustion rate and resource utilization efficiency, and reduces operating costs.
Patent Information
- Application Number
- CN202423116799.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing technologies make it difficult to achieve real-time quantitative addition of dust, resulting in an improper addition ratio during pulverized coal injection, which affects combustion rate and resource utilization efficiency.
A mechanism including an ash box, a quantitative conveying system and a belt conveyor was designed. The quantitative conveying of dust collector ash is controlled by a screw shaft and a variable frequency motor to ensure that the dust collector ash is added to the mixing equipment as needed.
It enables flexible and quantitative addition of dust, improves combustion rate and resource utilization efficiency, and reduces manual operation costs.
Smart Images
Figure CN223570616U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of casting, in particular to a mechanism capable of quantitatively adding dust removal ash. BACKGROUND
[0002] In the modern blast furnace ironmaking process, pulverized coal is usually used to replace part of the coke. Coal injection can reduce the coke ratio and improve the smelting conditions of the blast furnace. Therefore, blast furnace coal injection has been widely used by steel enterprises. Dust removal ash is a solid waste produced in the ironmaking process, and the iron and carbon in the composition account for half of the total amount of dust removal ash, and the rest is in the form of oxides, such as calcium oxide, silicon oxide, aluminum oxide and magnesium oxide. The dust removal ash is characterized by light weight and small particle size. In recent years, many domestic enterprises have been adding dry quenching dust removal ash to the injected coal for blast furnace injection to realize the resource utilization of dust removal ash.
[0003] However, due to the high ash content in the dust removal ash, too much addition will reduce the combustion rate of the mixed coal powder composed of the dust removal ash and the coal powder. Industrial experiments show that the addition ratio of the dust removal ash in the mixed coal powder should not exceed 6%, and the specific ratio will be adjusted in time during production due to the change of the composition of the dust removal ash. Therefore, it is necessary to provide a device capable of adjusting the addition amount of the dust removal ash in real time according to the needs of users when the dust removal ash is used for resource utilization. CONTENT OF THE INVENTION
[0004] The application provides a mechanism capable of quantitatively adding dust removal ash, which can adjust the addition amount of the dust removal ash in real time according to the production needs and meet the production needs.
[0005] The above object of the application is achieved by the following technical scheme:
[0006] A mechanism capable of quantitatively adding dust removal ash, comprising a dust box, wherein the dust box is fixedly installed on the ground through a device main frame body, a feeding port for being connected with an in-plant dust removal system is arranged on the top of the dust box, a discharging port for discharging dust is arranged below the dust box, and a valve is arranged on the discharging port.
[0007] A quantitative conveying system is arranged directly below the dust box, a belt conveyor is arranged below the quantitative conveying system, the quantitative conveying system is used for quantitatively inputting the dust removal ash discharged from the dust box into the belt conveyor according to needs, and the belt conveyor is used for transferring the received dust removal ash to a mixing device.
[0008] Further, the quantitative conveying system comprises a quantitative conveying tank, the upper port of the quantitative conveying tank is directly opposite to the discharging port below the dust box, a dust storage hopper is connected to the lower end of the quantitative conveying tank, and the outer sides of the quantitative conveying tank and the dust storage hopper are fixedly connected with the device main frame body through support plates.
[0009] The bottom of the ash storage hopper is provided with a screw shaft, one end of the screw shaft is rotatably connected with one of the side walls of the ash storage hopper, the other end of the screw shaft extends out of the other opposite side wall of the ash storage hopper and is rotatably connected with a pipe shell installed outside the side wall of the ash storage hopper, and the lower side of the pipe shell is provided with a discharge pipe extending to the belt conveyor.
[0010] The end of the screw shaft away from the pipe shell is connected with a driving device after penetrating through the side wall of the ash storage hopper adjacent to the side wall, and the driving device can control the rotation time and rotation speed of the screw shaft.
[0011] Further, the driving device comprises a first pulley connected with the screw shaft, a second pulley connected with the first pulley through a transmission belt below the first pulley, the second pulley is fixedly installed on the output shaft of a variable frequency motor, and the shell of the variable frequency motor is fixedly installed on the ground through a motor support.
[0012] Further, the ash storage hopper is provided with a turnover and discharging assembly above the screw shaft, and the turnover and discharging assembly can make the dust collecting ash in the ash storage hopper uniformly flow to the screw shaft.
[0013] Further, the turnover and discharging assembly comprises a turnover shaft, both ends of the turnover shaft are rotatably connected with the opposite side wall of the ash storage hopper along the axis direction of the screw shaft, a plurality of turnover rods are uniformly arranged on the turnover shaft, and the end of the turnover shaft away from the pipe shell is connected with the end of the screw shaft on the same side through a transmission unit, and the turnover shaft can be driven to rotate synchronously through the transmission unit when the screw shaft rotates.
[0014] Further, the transmission unit comprises a first gear fixedly connected with the end of the turnover shaft away from the pipe shell, a second gear is arranged below the first gear, the second gear is sleeved on the screw shaft on the same side and is fixedly connected with the screw shaft, and the first gear and the second gear are connected together through a chain.
[0015] Further, a metal screening net is installed in the upper port of the quantitative conveying tank.
[0016] In summary, the present application has at least one of the following beneficial technical effects:
[0017] The dust collected in the dust box of the application can be added to the quantitative conveying system through the discharge port below, and the dust discharged from the dust box of the application can be quantitatively input to the belt conveyor according to the production needs through the quantitative conveying system, and then the dust discharged from the quantitative conveying system can be sent to the corresponding mixing equipment by the belt conveyor. The mechanism for quantitatively adding dust of the application can control the amount of dust added in real time by the quantitative conveying system according to the production needs during use, which is convenient and flexible to adjust, can meet the needs of different industrial occasions for quantitative addition of dust, and the output dust can be automatically added to the corresponding equipment by the belt conveyor, effectively reducing the operation cost of workers. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0019] Figure 1 is a schematic diagram of the overall structure of the application;
[0020] Figure 2 is a schematic diagram of the structure after part of the dust hopper of the application is cut open;
[0021] Figure 3 is a schematic diagram of the structure after the transmission belt for connecting the first pulley and the second pulley and the chain for connecting the first gear and the second gear in the application are removed;
[0022] Figure 4 is Figure 3 is an enlarged schematic diagram of A in
[0023] Fig. 1 is a schematic diagram of the overall structure of the application; Fig. 2 is a schematic diagram of the structure of the equipment main frame body of the application; Fig. 3 is a schematic diagram of the structure of the feeding port of the application; Fig. 4 is a schematic diagram of the structure of the discharge port of the application; Fig. 5 is a schematic diagram of the structure of the valve of the application; Fig. 6 is a schematic diagram of the structure of the quantitative conveying system of the application; Fig. 7 is a schematic diagram of the structure of the quantitative conveying tank of the quantitative conveying system of the application; Fig. 8 is a schematic diagram of the structure of the dust hopper of the quantitative conveying system of the application; Fig. 9 is a schematic diagram of the structure of the support plate of the dust hopper of the quantitative conveying system of the application; Fig. 10 is a schematic diagram of the structure of the spiral shaft of the dust hopper of the quantitative conveying system of the application; Fig. 11 is a schematic diagram of the structure of the pipe shell of the dust hopper of the quantitative conveying system of the application; Fig. 12 is a schematic diagram of the structure of the discharge pipe of the dust hopper of the quantitative conveying system of the application; Fig. 13 is a schematic diagram of the structure of the driving equipment of the dust hopper of the quantitative conveying system of the application; Fig. 14 is a schematic diagram of the structure of the first pulley of the driving equipment of the dust hopper of the quantitative conveying system of the application; Fig. 15 is a schematic diagram of the structure of the second pulley of the driving equipment of the dust hopper of the quantitative conveying system of the application; Fig. 16 is a schematic diagram of the structure of the variable frequency motor of the driving equipment of the dust hopper of the quantitative conveying system of the application; Fig. 17 is a schematic diagram of the structure of the motor support of the driving equipment of the dust hopper of the quantitative conveying system of the application; Fig. 18 is a schematic diagram of the structure of the belt conveyor of the application; Fig. 19 is a schematic diagram of the structure of the turnover and mixing discharging assembly of the application; Fig. 20 is a schematic diagram of the structure of the turnover shaft of the turnover and mixing discharging assembly of the application; Fig. 21 is a schematic diagram of the structure of the turnover rod of the turnover and mixing discharging assembly of the application; and Fig. 22 is a schematic diagram of the structure of the transmission unit of the turnover and mixing discharging assembly of the application. DETAILED DESCRIPTION
[0024] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0025] As shown in Figure 1 Fig. 1, the disclosed mechanism for quantitatively adding fly ash includes a fly ash box 1, which is fixedly installed on the ground through a device main frame body 2. The top of the fly ash box 1 is provided with an inlet port 3 for being connected with an in-plant dust removal system. The lower portion of the fly ash box 1 is provided with a discharge port 4 for discharging fly ash, and a valve 5 is installed on the discharge port 4.
[0026] A quantitative conveying system 6 is arranged directly below the fly ash box 1. A belt conveyor 7 is arranged below the quantitative conveying system 6. The quantitative conveying system 6 is used for quantitatively inputting the fly ash discharged from the fly ash box 1 into the belt conveyor 7 according to requirements. The belt conveyor 7 is used for transferring the received fly ash to a mixing device.
[0027] In the above embodiment, the top of the fly ash box 1 is connected with the in-plant dust removal system through the inlet port 3. In this way, the fly ash produced by the dust removal system can be collected in the fly ash box 1. Since the connection between the two is a closed structure, the dust pollution during the conveying of the fly ash can be reduced. The fly ash box 1 is arranged directly above the quantitative conveying system 6. In this way, the fly ash in the fly ash box 1 can be quickly and smoothly conveyed to the quantitative conveying system 6. The valve 5 on the discharge port 4 of the fly ash box 1 can be preferably an electromagnetic valve. In this way, the on-site technical personnel can remotely control the opening and closing of the bottom discharge port 4 of the fly ash box 1, so that the technical personnel can operate more conveniently.
[0028] The quantitative conveying system 6 of the present application is a transfer device for fly ash. The fly ash discharged from the fly ash box 1 can be effectively distributed and controlled in the quantitative conveying system 6, so as to quantitatively output the fly ash to the belt conveyor 7 below according to production requirements. In this way, the technical personnel can flexibly control the addition amount of the fly ash. In order to ensure that the fly ash and the coal powder are uniformly sprayed into the blast furnace, the fly ash needs to be added into a mixing device (which is mainly used for mixing the coal powder and the fly ash). The belt conveyor 7 of the present application can automatically transport the fly ash discharged from the quantitative conveying system 6 to the mixing device. Compared with the manual feeding mode, the operation cost of the artificial can be effectively reduced.
[0029] Further, as shown in Figure 1 and Figure 2As shown, the quantitative conveying system 6 comprises a quantitative conveying tank 61, the upper end of the quantitative conveying tank 61 is opposite to the discharging port 4 below the ash box 1, the lower end of the quantitative conveying tank 61 is connected with a storage hopper 62, and the outer sides of the quantitative conveying tank 61 and the storage hopper 62 are fixedly connected through a support plate 63 and the equipment main frame body 2;
[0030] The bottom of the storage hopper 62 is provided with a spiral shaft 64, one end of the spiral shaft 64 is rotatably connected with one of the side walls of the storage hopper 62, the other end of the spiral shaft 64 extends out of the other opposite side wall of the storage hopper 62 and is rotatably connected with a pipe shell 65 installed outside the side wall of the storage hopper 62, and the lower side of the pipe shell 65 is provided with a discharging pipe 66 extending to the belt conveyor 7;
[0031] The end of the spiral shaft 64 away from the pipe shell 65 penetrates through the side wall of the storage hopper 62 adjacent to the side wall and is connected with a driving device 67, and the driving device 67 can control the rotation time and rotation speed of the spiral shaft 64.
[0032] In the above embodiment, the spiral shaft 64 provided at the bottom of the storage hopper 62 is similar to the mechanism of the horizontal spiral conveyor, when the spiral shaft 64 rotates under the driving of the driving device 67, the spiral blade located in the pipe shell 65 and the storage hopper 62 can slowly and uniformly push the material flowing into the storage hopper 62 from the quantitative conveying tank 61 to the discharging pipe 66 in the horizontal direction, and then the material is discharged from the discharging pipe 66 to the belt conveyor 7 below, the quantitative conveying tank 61 of the present application can temporarily store some dust removal ash unloaded from the ash box 1, when the spiral shaft 64 rotates, the dust removal ash is timely supplemented into the storage hopper 62, so that the spiral shaft 64 can continuously transport a certain amount of dust removal ash to the discharging pipe 66, the spiral shaft 64 is used to send the dust removal ash to the belt conveyor 7, the structure is not only simple, stable and reliable in operation, but also can stir the dust removal ash during the transmission process, so that the dust removal ash is uniformly discharged from the discharge port, which is helpful for the belt conveyor 7 to continuously and stably add the dust removal ash to the mixing equipment.
[0033] Further, as shown in the figure, Figures 2-4 The driving device 67 comprises a first pulley 671 connected with the spiral shaft 64, a second pulley 672 connected with the first pulley 671 through a transmission belt below the first pulley 671, the second pulley 672 is fixedly installed on the output shaft of a variable frequency motor 673, and the shell of the variable frequency motor 673 is fixedly installed on the ground through a motor support 674.
[0034] In the above embodiment, the variable frequency motor 673 can drive the first pulley 671 to rotate by the transmission belt when working, and the first pulley 671 is connected to one end of the spiral shaft 64, so that the spiral shaft 64 can be stably driven to convey the dust collecting ash at the bottom of the ash hopper 62 when the variable frequency motor 673 works. In addition, since the variable frequency motor 673 has a variable frequency function, the technician can not only realize the effect of adjusting the rotating speed of the variable frequency motor 673 by changing the frequency through the operation system of the variable frequency motor 673, but also can realize the effect of adjusting the dust collecting ash adding amount in real time by controlling the running time and speed of the variable frequency motor 673 in the operation system of the variable frequency motor 673 according to the production needs during the production process, so as to meet different production needs on site.
[0035] Further, as shown in Figure 2 The ash hopper 62 is provided with a turnover and mixing and discharging assembly 8 directly above the spiral shaft 64, and the turnover and mixing and discharging assembly 8 can make the dust collecting ash in the ash hopper 62 flow uniformly to the spiral shaft 64 below.
[0036] In the above embodiment, the turnover and mixing and discharging assembly 8 of the application can timely scatter the dust collecting ash above the spiral shaft 64 during use, which can prevent the dust collecting ash in the ash hopper 62 from being unable to timely move downward due to hardening, and can also make the dust collecting ash flow uniformly to the spiral shaft 64 below.
[0037] Further, as shown in Figure 2 The turnover and mixing and discharging assembly 8 includes a turnover shaft 81, both ends of the turnover shaft 81 are rotationally connected to opposite side walls of the ash hopper 62 along the axial direction of the spiral shaft 64, a plurality of turnover rods 82 are uniformly arranged on the turnover shaft 81, and the end of the turnover shaft 81 away from the tube shell 65 is connected to the end of the spiral shaft 64 on the same side through a transmission unit 83. The spiral shaft 64 can drive the turnover shaft 81 to rotate synchronously through the transmission unit 83 when rotating.
[0038] In the above embodiment, since the dust collecting ash in the ash hopper 62 needs to be stably discharged downward when the spiral shaft 64 works, the turnover shaft 81 and the spiral shaft 64 are connected together through the transmission unit 83, so that the spiral shaft 64 and the turnover shaft 81 can be driven at the same time by the power of the variable frequency motor 673, and the turnover shaft 81 can timely scatter and uniformly the dust collecting ash in the ash hopper 62 with the turnover rods 82 around it when the spiral shaft 64 works, so as to ensure that the dust collecting ash is continuously and stably outputted when the spiral shaft 64 works.
[0039] Further, as shown in Figures 2-4As shown, the transmission unit 83 comprises a first gear 831 fixedly connected with the turning and stirring shaft 81 at one end away from the tube shell 65, and a second gear 832 arranged below the first gear 831, the second gear 832 being sleeved on the helical shaft 64 at the same side and fixedly connected with the helical shaft 64, and the first gear 831 and the second gear 832 being connected together through a chain.
[0040] In the above embodiment, the second gear 831 of the present application is sleeved on one end of the helical shaft 64 connected with the first belt pulley 671, in order to ensure that the second gear 832 and the first belt pulley 671 do not interfere with each other during the working process, the second gear 832 and the first belt pulley 671 of the present application have a certain gap therebetween, and the second belt pulley 672 and the first gear 831 on the turning and stirring shaft 81 are connected through a chain, so that when the helical shaft 64 rotates, the turning and stirring shaft 81 can be synchronously driven to rotate, thereby realizing the effect of scattering and facilitating the flow and conveying of the dust collecting ash in the dust hopper 62 by the turning and stirring rod 82 on the turning and stirring shaft 81. Meanwhile, the utilization efficiency of the power of the variable frequency motor 673 is improved.
[0041] Further, as shown in Figure 1 The upper end of the quantitative conveying tank 61 is provided with a metal screening net 9.
[0042] In the above embodiment, since the dust collecting ash is a solid waste generated in the ironmaking process, some large impurities are inevitably mixed therein, and the metal screening net 9 arranged on the quantitative conveying tank 61 can timely filter the impurities contained in the original dust collecting ash in the ash tank 1 when the dust collecting ash falls, so as to avoid the influence of the impurities on the reuse effect of the dust collecting ash.
[0043] The implementation principle of the embodiment is that when it is needed to add fly ash to the mixing device, the on-site technician can first open the valve 5 on the discharge port 4 of the ash box 1, add a certain amount of fly ash into the quantitative conveying tank 61 and the ash storage hopper 62, then adjust the working frequency of the variable frequency motor 673 according to the process requirement, and start the variable frequency motor 673. After the variable frequency motor 673 is started, the rotating variable frequency motor 673 can drive the rotating of the turning shaft 81 and the screw shaft 64. The turning shaft 81 can ensure that the fly ash continuously and smoothly flows to the screw shaft 64 at the bottom of the ash storage hopper 62 by using the turning rod 82 thereon. With the continuous rotation of the screw shaft 64, the fly ash in the ash storage hopper 62 can be uniformly conveyed to the discharge pipe 66 on the outer tube shell 65 of the ash storage hopper 62, so as to be smoothly discharged to the belt conveyor 7 through the discharge pipe 66. The belt conveyor 7 in the working state can smoothly transport the fallen fly ash to the mixing device. The device of the application can realize the stable quantitative addition effect of the fly ash when working. When the process changes and the addition amount of the fly ash needs to be adjusted, the worker only needs to adaptively adjust the running time and speed of the variable frequency motor 673. The device is stable and reliable, simple and convenient to use.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.
Claims
1. A mechanism for quantitatively adding dust collector ash, characterized in that: Includes a ash box (1), which is fixedly installed on the ground by the main frame (2) of the equipment. The top of the ash box (1) is provided with a feeding port (3) for connecting to the dust removal system in the plant. The bottom of the ash box (1) is provided with a discharge port (4) for unloading ash. A valve (5) is installed on the discharge port (4). A quantitative conveying system (6) is provided directly below the ash box (1), and a belt conveyor (7) is provided below the quantitative conveying system (6). The quantitative conveying system (6) is used to quantitatively input the dust collected from the ash box (1) onto the belt conveyor (7) as needed. The belt conveyor (7) is used to transfer the received dust collected to the mixing equipment.
2. The mechanism for quantitatively adding dust collector ash according to claim 1, characterized in that: The quantitative conveying system (6) includes a quantitative conveying tank (61), the upper port of which is directly opposite the discharge port (4) below the ash box (1), and the lower end of the quantitative conveying tank (61) is connected to an ash storage hopper (62). The outer sides of the quantitative conveying tank (61) and the ash storage hopper (62) are fixedly connected to the main frame of the equipment (2) through a support plate (63). The bottom of the ash storage hopper (62) is equipped with a spiral shaft (64). One end of the spiral shaft (64) is rotatably connected to one side wall of the ash storage hopper (62). The other end of the spiral shaft (64) extends out of the other opposite side wall of the ash storage hopper (62) and is rotatably connected to a tube shell (65) installed outside the side wall of the ash storage hopper (62). A discharge pipe (66) extending towards the belt conveyor (7) is provided on the lower side of the tube shell (65). The end of the spiral shaft (64) away from the shell (65) passes through the side wall of the ash hopper (62) on the adjacent side and is connected to a drive device (67). The drive device (67) can control the rotation time and rotation speed of the spiral shaft (64).
3. The mechanism for quantitatively adding dust collector ash according to claim 2, characterized in that: The drive device (67) includes a first pulley (671) connected to the helical shaft (64), and a second pulley (672) is connected below the first pulley (671) via a transmission belt. The second pulley (672) is fixedly mounted on the output shaft of the variable frequency motor (673), and the housing of the variable frequency motor (673) is fixedly mounted on the ground via a motor bracket (674).
4. The mechanism for quantitatively adding dust collector ash according to claim 3, characterized in that: The ash storage hopper (62) is provided with a stirring and feeding assembly (8) directly above the spiral shaft (64). The stirring and feeding assembly (8) can make the dust in the ash storage hopper (62) flow evenly to the spiral shaft (64).
5. The mechanism for quantitatively adding dust collector ash according to claim 4, characterized in that: The mixing and feeding assembly (8) includes a mixing shaft (81). The two ends of the mixing shaft (81) are rotatably connected to opposite side walls of the ash storage hopper (62) along the axial direction of the spiral shaft (64). A plurality of mixing rods (82) are evenly arranged on the mixing shaft (81). The end of the mixing shaft (81) away from the shell (65) is connected to the end of the spiral shaft (64) on the same side through a transmission unit (83). When the spiral shaft (64) rotates, the mixing shaft (81) can be driven to rotate synchronously through the transmission unit (83).
6. The mechanism for quantitatively adding dust collector ash according to claim 5, characterized in that: The transmission unit (83) includes a first gear (831) fixedly connected to the end of the stirring shaft (81) away from the tube shell (65). A second gear (832) is provided below the first gear (831). The second gear (832) is sleeved on the spiral shaft (64) on the same side and the two are fixedly connected. The first gear (831) and the second gear (832) are connected together by a chain.
7. The mechanism for quantitatively adding dust collector ash according to any one of claims 2 to 6, characterized in that: A metal sieve (9) is installed inside the upper port of the quantitative conveying tank (61).