A fly ash homogenization device

Abstract

The application relates to a fly ash homogenizing device, belonging to the technical field of solid waste treatment, which comprises a material homogenizing container, a quantitative feeding mechanism for providing fly ash for the material homogenizing container, a gas supply mechanism installed at one end of the material homogenizing container, and a discharge pipe connected to the other end of the material homogenizing container; the material homogenizing container is provided with a gas supply port facing the discharge pipe; the gas supply port is coaxially arranged with the discharge pipe; and the material homogenizing container is provided with a homogenized feeding port for communicating with the quantitative feeding mechanism. The application has the effect of higher homogenization degree of fly ash.

Description

Technical Field

[0001] This application relates to the field of solid waste treatment, and in particular to a fly ash homogenization device. Background Technology

[0002] With social development, the amount of solid waste generated in production and daily life is increasing, making solid waste treatment increasingly important. Solid waste treatment involves reducing its volume and accelerating its natural purification process through physical means or biochemical actions. To reduce the probability of secondary pollution from fly ash gases after solid waste incineration, it is generally necessary to collect and reprocess the fly ash gases.

[0003] Currently, fly ash is mainly treated using three methods: solidification and stabilization, heat treatment, and resource utilization, supplemented by final disposal methods such as secure landfill. Because resource recycling generates greater economic value and is more environmentally friendly, it is favored by producers. Before utilizing fly ash for resource purposes, it is necessary to detoxify the toxic substances in the fly ash, especially by using dioxin detoxification devices to remove dioxins.

[0004] Regarding the aforementioned technologies, the inventors believe that the higher the degree of homogenization of fly ash when it enters the dioxin detoxification device, the more complete the detoxification of the dioxin detoxification device will be, and the better the removal effect of dioxins from fly ash will be. Utility Model Content

[0005] To achieve a higher degree of uniformity in fly ash, this application provides a fly ash homogenization device.

[0006] The fly ash homogenization device provided in this application adopts the following technical solution: A fly ash homogenization device includes a homogenizing container, a quantitative feeding mechanism for supplying fly ash to the homogenizing container, an air supply mechanism installed at one end of the homogenizing container, and a discharge pipe connected to the other end of the homogenizing container; the homogenizing container has an air supply port facing the discharge pipe; the air supply port is coaxially arranged with the discharge pipe; the homogenizing container has a homogenization inlet for communicating with the quantitative feeding mechanism.

[0007] By adopting the above technical solution, a quantitative feeding mechanism is set up to provide fly ash to the equalization container in a quantitative manner, ensuring stable fly ash feeding and facilitating the equalization of fly ash by the equalization container. An air supply mechanism is arranged at one end of the equalization container, and a discharge pipe is arranged at the other end opposite to the air supply port of the air supply mechanism. The air supply port and the discharge pipe are arranged coaxially, allowing the gas from the air supply port to blow fly ash into the discharge pipe to the maximum extent, resulting in a higher gas velocity in the discharge pipe and improving the equalization effect of the equalization container and the conveying efficiency of fly ash.

[0008] Optionally, the equalization container has a guide section connected to the discharge pipe, the inner diameter of which gradually decreases in the direction close to the discharge pipe.

[0009] By adopting the above technical solution, the equalization container has a guide section with a gradually decreasing inner diameter along the direction close to the discharge pipe, which makes the process of fly ash entering the discharge pipe from the equalization container smoother. The reduction in the inner diameter of the guide section makes the fly ash gradually compressed and accelerated in the guide section, so that it can enter the discharge pipe more smoothly and improve the discharge efficiency of fly ash.

[0010] Optionally, the air supply mechanism includes an air supply pipe installed at the air supply port and an air supply fan connected to the air supply pipe; the air outlet of the air supply pipe is located on the side of the homogenizing feed port facing away from the discharge pipe.

[0011] By adopting the above technical solution, an air supply fan is set up to provide gas to the air supply pipe. The air outlet of the air supply pipe is located on the side of the homogenizing feed inlet facing away from the discharge pipe. This allows the fly ash entering the homogenizing container to be better impacted by the airflow and move towards the discharge pipe, thereby enhancing the homogenization effect of the fly ash and facilitating the conveying of fly ash.

[0012] Optionally, the homogenizing inlet is located at the top of the homogenizing container.

[0013] By adopting the above technical solution, the homogenization inlet is opened at the top of the homogenization container, so that the fly ash entering the homogenization container can move vertically downward under the action of gravity and fully mix with the gas at the outlet, which is conducive to the homogenization of fly ash.

[0014] Optionally, the quantitative feeding mechanism includes a screw conveyor and a distributor; the distributor includes a distribution housing connecting the screw outlet of the screw conveyor and the homogenizing inlet, a distribution impeller rotatably installed in the distribution housing, and a first drive motor for driving the distribution impeller to rotate; the distribution housing has a distribution chamber for the distribution impeller to rotate.

[0015] By adopting the above technical solution, the screw conveyor and distributor of the quantitative feeding mechanism are used. The distributor's impeller rotates in the distribution chamber, enabling quantitative conveying of fly ash. By counting the number of rotations of the distributor impeller, the amount of fly ash entering the equalization container can be preliminarily calculated, thereby controlling the concentration of fly ash output.

[0016] Optionally, the material distribution shell has a homogenizing chamber located below the material distribution chamber; the homogenizing chamber includes an upper chamber and a lower chamber, the cross-section of the upper chamber gradually increases along the conveying direction of the fly ash, and the cross-section of the lower chamber gradually decreases along the conveying direction of the fly ash.

[0017] By adopting the above technical solution, a homogenizing chamber is set below the distribution chamber. The homogenizing chamber includes an upper chamber with a cross-section that gradually increases along the fly ash conveying direction and a lower chamber with a cross-section that gradually decreases along the fly ash conveying direction. By gradually expanding the cross-section to reduce the fly ash flow rate, the fly ash transitions from pulsed discharge from the distribution chamber to continuous and stable discharge, thereby enhancing the stability of fly ash conveying.

[0018] Optionally, the quantitative feeding mechanism further includes a storage container and a star valve connected to the bottom of the storage container; the bottom of the star valve is connected to the feed inlet of the screw conveyor.

[0019] By adopting the above technical solution, a storage container can be set up to store fly ash, continuously supplying fly ash to the subsequent equalization container. The star valve connected to the bottom of the storage container can control its opening and closing, quantitatively conveying the fly ash and making the amount of fly ash entering the screw conveyor more stable.

[0020] Optionally, the screw conveyor includes a conveying housing, a screw conveying shaft rotatably installed within the conveying housing, and a second drive motor for driving the screw conveying shaft to rotate.

[0021] By adopting the above technical solution and setting up a screw conveyor, the fly ash entering the distribution chamber is more uniform, the conveying rate is more stable, and it is easier to adjust the conveying rate of fly ash.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A fly ash homogenization device, wherein a quantitative feeding mechanism provides a quantitative and stable amount of fly ash to a homogenization container, and an air supply mechanism provides a stable airflow to the homogenization container, making the fly ash transmission volume of the discharge pipe more stable and the uniformity of fly ash higher; the coaxial arrangement of the air supply mechanism and the discharge pipe makes the fly ash mixing effect better under the action of airflow, thereby improving the uniformity of fly ash homogenization. 2. By setting up a screw conveyor and a distributor, the amount of fly ash conveyed into the equalization container can be controlled, which is beneficial for quantitative conveying and preliminary mixing of fly ash, improving the equalization effect of the equalization container on fly ash, and making the conveying of fly ash more stable. 3. By setting up a storage container and a star valve at the bottom of the storage container, fly ash can be stored. When fly ash homogenization is required, the star valve is opened to stabilize the amount of fly ash entering the screw conveyor. In conjunction with other components of the quantitative feeding mechanism, the quantitative supply of fly ash is realized, thereby promoting more stable and efficient operation of the fly ash homogenization device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the fly ash homogenization device in the embodiments of this application.

[0024] Figure 2This is a partial cross-sectional schematic diagram of the fly ash homogenization device in the embodiments of this application.

[0025] Figure 3 This is an embodiment of the present application. Figure 2 A magnified view of a portion of point A in the middle.

[0026] Explanation of reference numerals in the attached drawings: 1. Homogenizing container; 11. Homogenizing inlet; 12. Air supply port; 13. Guide section; 2. Quantitative feeding mechanism; 21. Storage container; 211. Fly ash inlet; 212. Pressure relief port; 213. Ash collection slope; 22. Star valve; 221. Discharge housing; 222. Discharge impeller; 23. Screw conveyor; 231. Conveying housing; 232. Screw conveying shaft; 2321. Screw drive rod; 2322. Screw blade; 233. Second drive motor; 24. Distributor; 241. Distributor housing; 242. Distributor impeller; 243. First drive motor; 244. Distributor chamber; 245. Upper chamber; 246. Lower chamber; 3. Air supply mechanism; 31. Air supply pipe; 312. Air outlet; 32. Air supply fan; 4. Discharge pipe. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses a fly ash homogenization device. (Refer to...) Figure 1 A fly ash homogenization device includes a homogenization container 1, a quantitative feeding mechanism 2 for supplying fly ash to the homogenization container 1, an air supply mechanism 3 installed at one end of the homogenization container 1, and a discharge pipe 4 connected to the other end of the homogenization container 1. The quantitative feeding mechanism 2 includes a storage container 21 for storing fly ash, a star valve 22 connected to the bottom of the storage container 21, a screw conveyor 23 installed at the bottom of the star valve 22, and a distributor 24 fixed to the bottom side of the screw conveyor 23 and connected to the homogenization container 1. The storage container 21, the star valve 22, the screw conveyor 23, the distributor 24, the homogenization container 1, and the discharge pipe 4 are arranged sequentially along the fly ash conveying direction.

[0029] Reference Figure 1 and Figure 2The storage container 21 has a fly ash inlet 211 connected to the feed pipe and a pressure relief port 212 at its top. Fly ash enters the storage container 21 through the fly ash inlet 211 along the feed pipe and settles downwards under gravity. A filter screen is arranged at the pressure relief port 212 to allow excess gas in the storage container 21 to escape, which helps maintain the pressure balance in the storage container 21. Above the star valve 22, the storage container 21 also has an ash collection ramp 213, which allows fly ash to slide down and collect. The star valve 22 includes a discharge housing 221 vertically fixed to the bottom of the storage container 21 and a discharge impeller 222 rotatably installed in the discharge housing 221. When the discharge impeller 222 rotates, the fly ash in the storage container 21 can be discharged into the screw conveyor 23.

[0030] Reference Figure 2 The screw conveyor 23 includes a horizontally arranged conveying housing 231 connected to a star valve 22 and a distributor 24, a screw conveying shaft 232 rotatably installed within the conveying housing 231, and a second drive motor 233 that drives the screw conveying shaft 232 to rotate. The conveying housing 231 has a cylindrical structure, and the screw conveying shaft 232 is coaxially arranged along the length of the conveying housing 231. One end of the screw conveying shaft 232 is located outside the conveying housing 231 and connected to the second drive motor 233. The screw conveying shaft 232 includes a screw drive rod 2321 and screw blades 2322 circumferentially fixed to the screw drive rod 2321. Fly ash enters through the feed inlet, and the second drive motor 233 drives the screw drive rod 2321 to rotate. The screw blades 2322 also rotate, causing the fly ash between the screw blades 2322 to rotate, thus realizing the movement and transmission of the fly ash. The fly ash is discharged through the discharge outlet into the distributor 24.

[0031] Reference Figure 1 and Figure 2 The distributor 24 includes a distribution housing 241 connecting the screw conveyor 23 and the equalization container 1, a distribution impeller 242 rotatably installed inside the distribution housing 241, and a first drive motor 243 that drives the distribution impeller 242 to rotate. The distribution housing 241 has a distribution chamber 244 for the distribution impeller 242 to rotate. The distribution impeller 242 has an impeller rotation shaft at its rotation center. The impeller rotation shaft is connected to the first drive motor 243 fixed to the outside of the distribution housing 241, so that the first drive motor 243 can drive the impeller rotation shaft to rotate, thereby driving the distribution impeller 242 to rotate.

[0032] Reference Figure 2 and Figure 3The distribution shell 241 has a homogenizing chamber located below the distribution chamber 244. The homogenizing chamber includes an upper chamber 245 and a lower chamber 246. The cross-section of the upper chamber 245 gradually increases along the fly ash conveying direction; the cross-section of the lower chamber 246 gradually decreases along the fly ash conveying direction. After the fly ash enters the distribution chamber 244, it is discharged into the homogenizing chamber by the rotation of the distribution impeller 242, at which point the flow rate slows down. After the fly ash is mixed in the homogenizing chamber, it is discharged sequentially from the distribution shell 241 and enters the homogenizing container 1. In this embodiment, the upper chamber 245 has a conical structure, and the lower chamber 246 has an inverted conical structure.

[0033] Reference Figure 2 and Figure 3 The homogenizing container 1 has a homogenizing inlet 11 at its top, which is connected to the distribution shell 241. An air supply port 12 is located on one side of the homogenizing container 1, and a discharge pipe 4 is installed on the other side. The air supply mechanism 3 includes an air supply pipe 31 arranged within the air supply port 12, an air supply fan 32 connected to the air supply pipe 31, and an air outlet 312 located at the end of the air supply pipe 31 and coaxial with the discharge pipe 4. The air outlet 312 of the air supply pipe 31 is located on the side of the homogenizing inlet 11 facing away from the discharge pipe 4, and the air supply pipe 31, the homogenizing container 1, and the discharge pipe 4 are arranged horizontally and coaxially, so that the fly ash falling from the homogenizing inlet 11 can be directly dispersed by the gas from the air outlet 312, thereby achieving a homogenization effect.

[0034] Reference Figure 2 and Figure 3 The uniform material container 1 also has a guide section 13 connected to the discharge pipe 4. The inner diameter of the guide section 13 gradually decreases along the direction close to the discharge pipe 4. Gas from the outlet 312 blows the fly ash into the guide section 13. The reduced inner diameter of the guide section 13 compresses the gas, increasing the flow rate and achieving uniform fly ash distribution. The fly ash tends to stabilize as it enters the discharge pipe 4 from the guide section 13, ultimately resulting in a uniform and stable output. In this embodiment, the uniform material container 1 is cylindrical, and the guide section 13 is frustum-shaped. Fly ash can enter the uniform material container 1 through the homogenization inlet 11.

[0035] Reference Figures 1 to 3 The implementation principle of the fly ash homogenization device in this application embodiment is as follows: fly ash enters the storage container 21 and settles at the bottom. The star valve 22 at the bottom of the storage container 21 is opened to allow the fly ash to enter the screw conveyor 23. The screw conveyor 23 transports the fly ash to the distributor 24. After being distributed by the distributor 24, the fly ash enters the homogenization container 1. The fly ash sinks from the homogenization inlet 11 due to gravity. The gas at the outlet 312 blows the fly ash away and into the discharge pipe 4, achieving the effect of homogenization and stable conveying of fly ash.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fly ash homogenization device, characterized in that, It includes a homogenizing container (1), a quantitative feeding mechanism (2) for supplying fly ash to the homogenizing container (1), an air supply mechanism (3) installed at one end of the homogenizing container (1), and a discharge pipe (4) connected to the other end of the homogenizing container (1); the homogenizing container (1) has an air supply port (12) facing the discharge pipe (4); the air supply port (12) is coaxially arranged with the discharge pipe (4); the homogenizing container (1) has a homogenizing inlet (11) for communicating with the quantitative feeding mechanism (2).

2. The fly ash homogenization device according to claim 1, characterized in that, The equalization container (1) has a guide section (13) connected to the discharge pipe (4), and the inner diameter of the guide section (13) gradually decreases in the direction close to the discharge pipe (4).

3. The fly ash homogenization device according to claim 2, characterized in that, The air supply mechanism (3) includes an air supply pipe (31) installed at the air supply port (12) and an air supply fan (32) connected to the air supply pipe (31); the air outlet (312) of the air supply pipe (31) is located on the side of the homogenized feed inlet (11) facing away from the discharge pipe (4).

4. The fly ash homogenization device according to claim 3, characterized in that, The homogenization inlet (11) is located at the top of the homogenization container (1).

5. The fly ash homogenization device according to claim 1, characterized in that, The quantitative feeding mechanism (2) includes a screw conveyor (23) and a distributor (24); the distributor (24) includes a distributor housing (241) connecting the screw outlet (2312) of the screw conveyor (23) and the homogenizing inlet (11), a distributor impeller (242) rotatably installed in the distributor housing (241), and a first drive motor (243) that drives the distributor impeller (242) to rotate; the distributor housing (241) has a distributor chamber (244) for the distributor impeller (242) to rotate.

6. The fly ash homogenization device according to claim 5, characterized in that, The material distribution shell (241) has a homogeneous chamber located below the material distribution chamber (244); the homogeneous chamber includes an upper chamber (245) and a lower chamber (246), the cross-section of the upper chamber (245) gradually increases along the conveying direction of fly ash; the cross-section of the lower chamber (246) gradually decreases along the conveying direction of fly ash.

7. The fly ash homogenization device according to claim 5, characterized in that, The quantitative feeding mechanism (2) also includes a storage container (21) and a star valve (22) connected to the bottom of the storage container (21); the bottom of the star valve (22) is connected to the feed port of the screw conveyor (23).

8. The fly ash homogenization device according to claim 7, characterized in that, The screw conveyor (23) includes a conveying housing (231), a screw conveying shaft (232) rotatably installed in the conveying housing (231), and a second drive motor (233) that drives the screw conveying shaft (232) to rotate.

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