Continuous feeding anti-blocking device for fly ash washing

Abstract

The utility model provides a fly ash washing continuous feeding anti-blocking device which is used for preventing fly ash from blocking a feeding port and comprises a fly ash feeding pipe, a fly ash infiltration pipe, a stirring device, a gas stripping mechanism and a high-pressure water conveying pipe. The bottom of the fly ash infiltration pipe is immersed in a fly ash mixed solution in the fly ash washing device and is communicated with the fly ash mixed solution, and the fly ash infiltration pipe is arranged on the fly ash infiltration pipe and extends into the fly ash infiltration pipe; a high-pressure water conveying pipe is arranged on the side face of the top of the fly ash infiltration pipe and used for guiding high-pressure water into the fly ash infiltration pipe. The stirring device is arranged in the fly ash feeding pipe, extends into the fly ash infiltration pipe and is immersed in liquid in the fly ash infiltration pipe; and the at least four groups of gas stripping mechanisms are uniformly distributed in the fly ash infiltration pipe and are positioned around the fly ash feeding pipe. Fly ash is conveyed to the fly ash washing mixing area through the stirring device, and the fly ash is prevented from caking on a solid-liquid interface to block the fly ash feeding speed.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste incineration fly ash treatment, and in particular relates to a fly ash water washing continuous feeding anti-blocking device. Background Art

[0002] As the proportion of domestic waste incineration power generation in my country increases, the amount of fly ash generated by waste incineration continues to increase, and as hazardous waste, it must be properly handled and disposed of. Using cement kilns to co-dispose of waste incineration fly ash is an effective way to recycle fly ash resources. However, the high chloride ion content in waste incineration fly ash can damage cement kilns and affect the quality of cement products.

[0003] Before the waste incineration fly ash is co-processed in cement kilns, water washing can significantly reduce the chloride ion content in the waste incineration fly ash, reaching the chloride ion level for the co-processing of waste incineration fly ash in cement kilns. At present, the types of fly ash washing devices are ordered batch cleaning devices and continuous cleaning devices. However, since waste incineration fly ash is non-uniform powder, and a certain reaction process is required for the uniform infiltration and mixing of fly ash and water, both cleaning devices have the phenomenon of water surface agglomeration when fly ash and cleaning water are in contact and mixed, which affects the full mixing and cleaning efficiency of fly ash. In particular, the continuous cleaning device is prone to blocking the continuous feed port of fly ash, affecting the feed rate of fly ash. Utility Model Content

[0004] The utility model aims to provide a fly ash feeder which can be continuously fed, the feed port is not easily blocked, and has a simple structure and is convenient and practical.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fly ash water washing continuous feeding anti-blocking device is used to prevent fly ash from being blocked at a feeding port, comprising a fly ash feeding pipe, a fly ash soaking pipe, a stirring device, an air stripping mechanism and a high-pressure water delivery pipe; the bottom of the fly ash soaking pipe is immersed in and communicated with the fly ash mixed liquid in the fly ash water washing device, the fly ash soaking pipe is arranged on the fly ash soaking pipe and extends into the fly ash soaking pipe; the fly ash soaking pipe and the fly ash feeding pipe are located on the same central axis, and the fly ash feeding pipe is used to put dry fly ash into the fly ash soaking pipe; A high-pressure water delivery pipe is provided on the top side of the fly ash infiltration pipe, and the high-pressure water delivery pipe is used to introduce high-pressure water into the fly ash infiltration pipe; the stirring device is arranged in the fly ash feeding pipe and extends into the fly ash infiltration pipe, immersed in the liquid in the fly ash infiltration pipe, and is used to stir the dry fly ash in the fly ash infiltration pipe with the gas lift water of the gas lift mechanism; the gas lift mechanism adopts at least four groups, and the four groups of the gas lift mechanisms are evenly distributed in the fly ash infiltration pipe and located around the fly ash feeding pipe.

[0007] Preferably, each group of the gas lift mechanism includes a gas lift water pipe, a gas lift air pipe and a gas lift water outlet; the gas lift air pipe is connected to the bottom of the gas lift water pipe and is arranged in the fly ash mixed liquid outside the fly ash infiltration pipe, the water outlet end of the gas lift water pipe is connected to the water outlet and is arranged in the fly ash infiltration pipe, and is located around the fly ash feed pipe.

[0008] Preferably, the total gas extraction water flow rate of the gas extraction water outlet is 10-20 times the feed amount of the fly ash.

[0009] Preferably, it also includes a high-pressure water gun nozzle, which is arranged in the fly ash infiltration pipe and provides high-pressure water to the high-pressure water gun nozzle through a high-pressure water delivery pipe; the number of the high-pressure water gun nozzles is the same as the number of the gas extraction water outlets.

[0010] Preferably, the high-pressure water gun nozzle and the air extraction water outlet are staggered.

[0011] Preferably, the high-pressure water gun nozzle is obliquely arranged below the gas extraction water outlet, and the water outlet of the high-pressure water gun nozzle faces the central axis of the fly ash infiltration pipe.

[0012] Preferably, the stirring device includes a stirrer and a stirrer impeller, the stirrer is arranged on the central axis of the fly ash feed pipe, the top of the stirrer is externally connected to a drive motor, the bottom of the stirrer is arranged in the fly ash infiltration pipe and connected to the stirrer impeller, and is used to stir the mixed liquid in the fly ash infiltration pipe.

[0013] Preferably, the impeller of the mixer adopts two groups of sawtooth structures, and the two groups of sawtooth structures are arranged alternately on both sides of the lower section of the mixer.

[0014] Preferably, the sawtooth spacing of the sawtooth structure is 5-10 cm, and fly ash will not easily adhere to the mixer impeller.

[0015] Preferably, the fly ash feed pipe is arranged at a distance of 20-40 cm from the surface of the liquid in the fly ash infiltration pipe; the gas lift water outlet is arranged at a distance of 30-50 cm from the surface of the liquid in the fly ash infiltration pipe, and is 10 cm higher than the fly ash feed pipe; the high-pressure water gun nozzle is arranged at a distance of 20-40 cm from the surface of the liquid in the fly ash infiltration pipe, and is 10 cm lower than the fly ash feed pipe; the bottom of the gas lift water pipe is immersed in the fly ash mixture, and the distance between its bottom and the water surface of the fly ash mixture is 50-100 cm; the bottom of the fly ash infiltration pipe is immersed in the fly ash mixture, and the distance between its bottom and the water surface of the fly ash mixture is 50-100 cm.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model is provided with a stirring device, utilizes the fly ash mixed liquid in the fly ash washing device to soak the dry fly ash, and utilizes the air-lifting water of the air-lifting mechanism as the water source, so as to quickly transport the fly ash to the fly ash washing mixing zone at a faster water flow rate, thereby preventing the fly ash from agglomerating at the solid-liquid interface to block the fly ash feeding speed, fully recycling the water source, and achieving high water efficiency.

[0018] 2. The utility model is equipped with a high-pressure water gun to flush fly ash agglomerates in the mixer area.

[0019] 3. The utility model is simple to use and has a simple structure, and is easy to use. It solves the problem that continuous feed of fly ash washing is prone to blockage, which affects the feed rate of fly ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic cross-sectional structure diagram of a fly ash water washing continuous feeding anti-blocking device provided by an embodiment of the utility model;

[0021] Figure 2 A schematic plan view of the structure of a fly ash water washing continuous feeding anti-blocking device provided in an embodiment of the utility model.

[0022] The serial numbers in the figure are as follows:

[0023] 1. Fly ash feed pipe; 2. Fly ash infiltration pipe; 3. Mixer; 4. Mixer impeller; 5. Air lift water pipe; 6. Air lift air duct; 7. Air lift water outlet; 8. High-pressure water gun nozzle; 9. High-pressure water delivery pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] like Figure 1 and Figure 2 As shown, a fly ash water washing continuous feeding anti-blocking device provided in this embodiment is used to prevent fly ash from being blocked at the feed port, including a fly ash feed pipe 1, a fly ash infiltration pipe 2, a stirring device, an air lift mechanism, a high-pressure water gun nozzle 8 and a high-pressure water delivery pipe 9.

[0026] The bottom of the fly ash infiltration pipe 2 is immersed in the fly ash mixed liquid in the fly ash washing device and is connected. The top of the fly ash infiltration pipe 2 is provided with a high-pressure water delivery pipe 9. The fly ash feed pipe 1 is arranged in the high-pressure water delivery pipe 9 and extends into the fly ash infiltration pipe 2. The high-pressure water delivery pipe 9, the fly ash infiltration pipe 2 and the fly ash feed pipe 1 are located on the same central axis. The fly ash feed pipe 1 is used to put dry fly ash into the fly ash infiltration pipe 2, and the high-pressure water delivery pipe 9 is used to introduce high-pressure water into the fly ash infiltration pipe 2.

[0027] The stirring device is arranged in the fly ash feeding pipe 1 and extends into the fly ash impregnation pipe 2, immersed in the liquid in the fly ash impregnation pipe 2, and is used to stir the dry fly ash in the fly ash impregnation pipe 2 with the gas stripping water of the gas stripping mechanism; at least four groups of gas stripping mechanisms are used, and the four groups of gas stripping mechanisms are evenly distributed in the fly ash impregnation pipe 2 and located around the fly ash feeding pipe 1.

[0028] Each group of gas lift mechanisms includes a gas lift water pipe 5, a gas lift air pipe 6 and a gas lift water outlet 7; the gas lift air pipe 6 is connected to the water inlet end of the gas lift water pipe 5 and is arranged in the water pool outside the fly ash infiltration pipe 2; the water outlet end of the gas lift water pipe 5 is connected to the water outlet 7 and is arranged in the fly ash infiltration pipe 2 and is located around the fly ash feed pipe 1.

[0029] Further, in this embodiment, the total gas lift water flow rate of the gas lift water outlet 7 is 10-20 times the feed amount of fly ash.

[0030] The high-pressure water gun nozzle 8 is arranged in the fly ash infiltration pipe 2, and the high-pressure water gun nozzle 8 is inclinedly arranged below the gas extraction water outlet 7. The number of the high-pressure water gun nozzles 8 is the same as that of the gas extraction water outlet 7, and the high-pressure water gun nozzles 8 and the gas extraction water outlet 7 are staggered, and the water outlet of the high-pressure water gun nozzle 8 faces the central axis of the fly ash infiltration pipe 2. High-pressure water is provided to the high-pressure water gun nozzle 8 through a high-pressure water delivery pipe 9; when there is still a partial blockage when the gas extraction water flows down, the high-pressure water gun 8 is used to flush the blocked fly ash blocks.

[0031] Furthermore, in this embodiment, the number of the air extraction water outlet 7 and the number of the high-pressure water gun outlet 8 are both 4-16.

[0032] The stirring device includes a stirrer 3 and a stirrer impeller 4. The stirrer 3 is arranged on the central axis of the fly ash feeding pipe 1. The top of the stirrer 3 is externally connected to a driving motor. The bottom of the stirrer 3 is arranged in the fly ash infiltration pipe 2 and connected to the stirrer impeller 4, which is used to stir the mixed liquid in the fly ash infiltration pipe 2.

[0033] Furthermore, in this embodiment, the mixer impeller 4 adopts two sets of sawtooth structures, which are staggered on both sides of the lower section of the mixer 3, and the sawtooth spacing L of the sawtooth structure is 5-10cm, so that the fly ash will not easily adhere to the mixer impeller 4, and it is convenient for the fly ash to staggeredly fall and mix in the fly ash infiltration pipe 2. The rotation speed of the mixer 3 is determined according to the properties of the fly ash, and is generally 30-180rpm.

[0034] Further, in the present embodiment, the fly ash feed pipe 1 is arranged at a distance H1 from the surface of the liquid in the fly ash infiltration pipe 2 of 20-40 cm; the gas lift water outlet 7 is arranged at a distance H2 from the surface of the liquid in the fly ash infiltration pipe 2 of 30-50 cm, which is 10 cm higher than the fly ash feed pipe 1; the high-pressure water gun nozzle 8 is arranged at a distance H3 from the surface of the liquid in the fly ash infiltration pipe 2 of 20-40 cm, which is 10 cm lower than the fly ash feed pipe 1; the bottom of the gas lift water pipe 5 is immersed in the water pool, and the distance H4 between its bottom and the water surface of the water pool is 50-100 cm; the bottom of the fly ash infiltration pipe 2 is immersed in the water pool, and the distance H5 between its bottom and the water surface of the water pool is 50-100 cm.

[0035] The working principle of the utility model is as follows:

[0036] Dry fly ash falls onto the liquid in the fly ash soaking pipe 2 through the fly ash feeding pipe 1, is stirred and mixed with water through the mixer 3 and the mixer impeller 4, and is flushed downward by the gas lift circulating water coming out of the gas lift water outlet 7, so that the fly ash and the mixture falling into the fly ash soaking pipe 2 are quickly sent to the mixer impeller 4 in the fly ash soaking pipe (2), and are washed together with the fly ash mixed liquid in the fly ash washing device connected to the fly ash soaking pipe (2), so as to prevent blockage during the fly ash feeding process.

[0037] The impeller 4 of the mixer 3 adopts two sets of serrated structures, which are staggered on both sides of the lower section of the mixer 3. The fly ash will not easily adhere to the impeller 4, and it is convenient for the fly ash to fall and mix in the fly ash infiltration pipe 2 in an staggered manner.

[0038] When there is still a partial blockage under the air lift water flow, a high-pressure water gun 8 is used to flush out the blocked fly ash blocks.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fly ash water washing continuous feeding anti-blocking device, located in a fly ash water washing device, used to prevent fly ash from being blocked at the feed inlet, characterized in that: It comprises a fly ash feeding pipe (1), a fly ash soaking pipe (2), a stirring device, an air stripping mechanism and a high-pressure water delivery pipe (9); The bottom of the fly ash soaking pipe (2) is immersed in the fly ash mixed liquid in the fly ash washing device and is in communication with the fly ash feeding pipe (1), and the fly ash soaking pipe (2) is arranged on the fly ash soaking pipe (2) and extends into the fly ash soaking pipe (2); the fly ash soaking pipe (2) and the fly ash feeding pipe (1) are located on the same central axis, and the fly ash feeding pipe (1) is used to feed dry fly ash into the fly ash soaking pipe (2); A high-pressure water delivery pipe (9) is provided on the top side of the fly ash infiltration pipe (2), and the high-pressure water delivery pipe (9) is used to introduce high-pressure water into the fly ash infiltration pipe (2); The stirring device is arranged in the fly ash feeding pipe (1) and extends into the fly ash soaking pipe (2), immersed in the liquid in the fly ash soaking pipe (2), and is used to stir the dry fly ash in the fly ash soaking pipe (2) with the gas stripping water of the gas stripping mechanism; The gas stripping mechanism is provided in at least four groups, and the four groups of the gas stripping mechanism are evenly distributed in the fly ash soaking pipe (2) and are located around the fly ash feeding pipe (1).

2. A fly ash water washing continuous feeding anti-blocking device according to claim 1, characterized in that: Each group of the gas lift mechanism comprises a gas lift water pipe (5), a gas lift air pipe (6) and a gas lift water outlet (7); The air lift duct (6) is connected to the bottom of the air lift water pipe (5) and is arranged in the fly ash mixed liquid outside the fly ash infiltration pipe (2); the water outlet end of the air lift water pipe (5) is connected to the water outlet (7) and is arranged in the fly ash infiltration pipe (2) and is located around the fly ash feed pipe (1).

3. A fly ash water washing continuous feeding anti-blocking device according to claim 2, characterized in that: The total gas extraction water flow rate of the gas extraction water outlet (7) is 10-20 times the feed amount of the fly ash.

4. A fly ash water washing continuous feeding anti-blocking device according to claim 2, characterized in that: It also includes a high-pressure water nozzle (8), which is arranged in the fly ash infiltration pipe (2) and is provided with high-pressure water via a high-pressure water delivery pipe (9); the number of the high-pressure water nozzles (8) is the same as the number of the gas extraction water outlets (7).

5. A fly ash water washing continuous feeding anti-blocking device according to claim 4, characterized in that: The high-pressure water gun nozzle (8) and the air extraction water outlet (7) are arranged in a staggered manner.

6. A fly ash water washing continuous feeding anti-blocking device according to claim 4, characterized in that: The high-pressure water gun nozzle (8) is arranged obliquely below the gas extraction water outlet (7), and the water outlet of the high-pressure water gun nozzle (8) faces the central axis of the fly ash infiltration pipe (2).

7. A fly ash water washing continuous feeding anti-blocking device according to claim 1, characterized in that: The stirring device comprises a stirrer (3) and a stirrer impeller (4); the stirrer (3) is arranged on the central axis of the fly ash feeding pipe (1); the top of the stirrer (3) is externally connected to a driving motor; the bottom of the stirrer (3) is arranged in the fly ash infiltration pipe (2) and connected to the stirrer impeller (4) for stirring the mixed liquid in the fly ash infiltration pipe (2).

8. A fly ash water washing continuous feeding anti-blocking device according to claim 7, characterized in that: The mixer impeller (4) has two groups of sawtooth structures, and the two groups of sawtooth structures are arranged in a staggered manner on both sides of the lower section of the mixer (3).

9. A fly ash water washing continuous feeding anti-blocking device according to claim 8, characterized in that: The sawtooth spacing of the sawtooth structure is 5-10 cm, so fly ash will not easily adhere to the mixer impeller (4).

10. A fly ash water washing continuous feeding anti-blocking device according to claim 4, characterized in that: The fly ash feed pipe (1) is arranged at a distance of 20-40 cm from the surface of the liquid in the fly ash infiltration pipe (2); the gas lift water outlet (7) is arranged at a distance of 30-50 cm from the surface of the liquid in the fly ash infiltration pipe (2), and is 10 cm higher than the fly ash feed pipe (1); the high-pressure water gun nozzle (8) is arranged at a distance of 20-40 cm from the surface of the liquid in the fly ash infiltration pipe (2), and is 10 cm lower than the fly ash feed pipe (1); the bottom of the gas lift water pipe (5) is immersed in the fly ash mixed liquid, and the distance between its bottom and the water surface of the fly ash mixed liquid is 50-100 cm; the bottom of the fly ash infiltration pipe (2) is immersed in the fly ash mixed liquid, and the distance between its bottom and the water surface of the fly ash mixed liquid is 50-100 cm.

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