Pneumatic ash conveying tank with buffer structure

Abstract

This utility model discloses a pneumatic ash conveying tank with a buffer structure, including a tank body. An inlet and an outlet are respectively provided on the upper and lower sides of the tank body. A main air inlet pipe and an air outlet pipe are spaced apart on the upper part of the tank body. An upper receiving pipe is provided below the outlet. A left air inlet pipe and a right conveying pipe are vertically arranged on the left and right sides of the bottom of the upper receiving pipe, respectively. An air supply pipe is connected to the outer side of the left air inlet pipe. This utility model adopts a vertically continuous layout of the upper receiving pipe, the left air inlet pipe, and the right conveying pipe, allowing the ash material to fall naturally and smoothly. The lateral airflow injected into the left air inlet pipe by the air supply pipe generates a controllable thrust, guiding the ash material to deflect to the right while forming a uniform and stable air film buffer layer at the bottom of the pipe, effectively absorbing impact energy and reducing pipe wall wear. Furthermore, under the synergistic effect of the dual airflow from the main air inlet pipe and the left air inlet pipe, the ash material exhibits a controllable rightward migration trajectory, ensuring efficient and stable ash conveying operation.

Description

Technical Field

[0001] This utility model relates to a pneumatic ash conveying tank with a buffer structure. Background Technology

[0002] In industrial settings such as thermal power plants and metallurgical plants, pneumatic conveying systems are core equipment for the efficient disposal of solid wastes such as fly ash and slag. Pneumatic ash conveying tanks are a key component of these systems, primarily used for the long-distance, closed-loop transport of solid particulate ash materials via compressed air.

[0003] However, during the unloading operation of the pneumatic ash conveyor, the ash material, driven by gas pressure, flows downwards along the pipeline and passes through bends, generating friction and impact with the curved parts inside the bends. This continuous interaction easily damages the bends, significantly shortening their service life. This not only requires frequent component replacements but also severely impacts overall work efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a pneumatic ash conveying tank with a buffer structure to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A pneumatic ash conveying tank with a buffer structure includes a tank body. The upper and lower sides of the tank body are respectively provided with a feed inlet and a discharge outlet. A main air inlet pipe and an air outlet pipe are spaced apart on the upper side of the tank body. An upper receiving pipe is provided below the discharge outlet. A left air inlet pipe and a right conveying pipe are respectively vertically provided on the left and right sides of the bottom of the upper receiving pipe. An air supply pipe is connected to the outer side of the left air inlet pipe.

[0007] Preferably, a downwardly inclined guide plate is provided on the inner side of the left air intake pipe, and an air delivery channel at the bottom surface is formed between the end of the guide plate and the inner wall of the left air intake pipe.

[0008] Preferably, the guide plate is a downwardly concave arc-shaped structure.

[0009] Preferably, a baffle plate is provided on the end face of the guide plate below the inner wall on the left side of the upper receiving pipe.

[0010] Preferably, the guide plate is provided with a plurality of first diversion holes, and the baffle plate is provided with a plurality of second diversion holes.

[0011] Preferably, a plurality of guide pipes are provided between the guide plate and the baffle plate, and the two ends of the guide pipes are respectively connected to the first diversion hole and the second diversion hole.

[0012] Preferably, a main air inlet valve is provided on the main air inlet pipe, an air outlet valve is provided on the air outlet pipe, a discharge valve is provided below the discharge port, and an air supply valve is provided between the left air inlet pipe and the air supply pipe.

[0013] The beneficial technical effects of this utility model are as follows:

[0014] This invention employs a vertically integrated layout with an upper feed pipe, a left air inlet pipe, and a right conveying pipe. This allows the ash material to fall naturally and smoothly. The lateral airflow injected from the air supply pipe into the left air inlet pipe generates a controllable thrust, guiding the ash material to deflect to the right while simultaneously forming a uniform and stable air film buffer layer at the bottom of the pipe. This effectively absorbs impact energy and reduces pipe wall wear. Furthermore, under the synergistic effect of the dual airflow from the main air inlet pipe and the left air inlet pipe, the ash material exhibits a controllable rightward migration trajectory, ensuring efficient and stable ash conveying operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pneumatic ash conveying tank structure according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of a pneumatic ash conveying tank according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the tank structure according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the flow guide plate and baffle plate structure of an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the guide tube structure of an embodiment of the present invention.

[0020] In the diagram: 1. Tank body; 2. Inlet; 3. Outlet; 4. Main air inlet pipe; 5. Outlet pipe; 6. Upper feed pipe; 7. Left air inlet pipe; 8. Right conveying pipe; 9. Air supply pipe; 10. Guide plate; 11. Air supply channel; 12. Baffle plate; 13. First diversion hole; 14. Second diversion hole; 15. Guide pipe; 16. Main air inlet valve; 17. Outlet valve; 18. Outlet valve; 19. Air supply valve. Detailed Implementation

[0021] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0022] like Figures 1-5As shown, the pneumatic ash conveying tank with a buffer structure provided in this embodiment includes a tank body 1. The upper and lower sides of the tank body 1 are respectively provided with a feed inlet 2 and a discharge outlet 3. The upper part of the tank body 1 is provided with a main air inlet pipe 4 and an air outlet pipe 5 at intervals. The lower part of the discharge outlet 3 is provided with an upper material receiving pipe 6. The bottom left and right sides of the upper material receiving pipe 6 are respectively provided with a left air inlet pipe 7 and a right conveying pipe 8. The outer side of the left air inlet pipe 7 is connected to an air supply pipe 9.

[0023] When ash is conveyed downwards from tank 1 through upper feed pipe 6, the ash falls smoothly and naturally because this pipe section is vertically connected to the left air inlet pipe 7 and the right conveying pipe 8. Simultaneously, airflow is continuously injected into the left air inlet pipe 7 through the air supply pipe 9, and the resulting lateral gas thrust causes the falling ash to deflect to the right. A stable air film forms at the bottom of the pipe, effectively buffering the impact load of the ash on the pipe wall, significantly reducing the wear rate and extending the service life of the pipe. Under the synergistic effect of the dual airflow from the main air inlet pipe 4 and the left air inlet pipe 7, the ash exhibits a controllable rightward migration trajectory, ensuring efficient and stable ash conveying operations.

[0024] Both the main intake pipe 4 and the air delivery pipe 9 are connected to an air compressor to deliver gas.

[0025] In this embodiment, as Figure 2 As shown, a downward-sloping guide plate 10 is provided on the inner side of the left air intake pipe 7. The end of the guide plate 10 and the inner wall of the left air intake pipe 7 form an air delivery channel 11 at the bottom, which ensures that the airflow can form a stable air film at the bottom of the pipe, protect the pipe and reduce the impact received by the pipe.

[0026] In this embodiment, as Figure 2 As shown, the guide plate 10 has a downwardly concave arc-shaped structure, which can better guide the airflow and ensure that the airflow flows to the bottom of the pipe.

[0027] In this embodiment, as Figure 2 As shown, a baffle plate 12 is provided on the end face of the guide plate 10 below the inner wall of the left side of the upper material receiving pipe 6 to prevent ash from entering the left air inlet pipe 7 when it falls.

[0028] In this embodiment, as Figure 4 As shown, the guide plate 10 is provided with multiple first diversion holes 13, and the baffle plate 12 is provided with multiple second diversion holes 14. When the air supply pipe 9 supplies air, the airflow is divided into two parts. Most of the airflow is guided by the guide plate 10 from the air supply channel 11 to the bottom of the ash material to form a protective air film. A small part of the airflow passes through the first diversion holes 13 and the second diversion holes 14 respectively, blowing the falling ash material to the right and making it deflect to the right, so that it can better enter the right conveying pipe 8.

[0029] In this embodiment, as Figure 5As shown, a plurality of guide pipes 15 are provided between the guide plate 10 and the baffle plate 12. The two ends of the guide pipes 15 are respectively connected to the first diversion hole 13 and the second diversion hole 14 to guide the flow direction of the airflow and ensure that the airflow can be blown out horizontally from the second diversion hole 14 so that the ash material can be stably deflected to the right.

[0030] In this embodiment, as Figure 1 As shown, a main air inlet valve 16 is installed on the main air inlet pipe 4, an air outlet valve 17 is installed on the air outlet pipe 5, a discharge valve 18 is installed below the discharge port 3, and an air supply valve 19 is installed between the left air inlet pipe 7 and the air supply pipe 9. In use, the feed inlet 2 of the tank body 1 is connected to the hopper of the upper equipment. When unloading, the valves at the feed inlet 2 and the air outlet valve 17 are closed, and the main air inlet valve 16, the discharge valve 18, and the air supply valve 19 are opened.

[0031] In summary, this embodiment employs a vertically connected layout of the upper material inlet pipe 6, the left air inlet pipe 7, and the right conveying pipe 8. This allows the ash material to fall naturally and smoothly. The lateral airflow injected into the left air inlet pipe 7 by the air supply pipe 9 generates a controllable thrust, guiding the ash material to deflect to the right while simultaneously forming a uniform and stable air film buffer layer at the bottom of the pipe. This effectively absorbs impact energy and reduces pipe wall wear. Furthermore, under the synergistic effect of the dual airflow from the main air inlet pipe 4 and the left air inlet pipe 7, the ash material exhibits a controllable rightward migration trajectory, ensuring efficient and stable ash conveying operations.

[0032] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A pneumatic ash conveying tank with a buffer structure, comprising a tank body (1), wherein an inlet (2) and an outlet (3) are respectively provided on the upper and lower sides of the tank body (1), and a main air inlet pipe (4) and an air outlet pipe (5) are provided at intervals on the upper part of the tank body (1), characterized in that: Below the discharge port (3) is an upper receiving pipe (6). The bottom left and right sides of the upper receiving pipe (6) are respectively vertically provided with a left air inlet pipe (7) and a right conveying pipe (8). The outer side of the left air inlet pipe (7) is connected to an air delivery pipe (9).

2. The pneumatic ash conveying tank with a buffer structure according to claim 1, characterized in that: An inclined guide plate (10) is provided on the inner side of the left air intake pipe (7), and an air delivery channel (11) is formed between the end of the guide plate (10) and the inner wall of the left air intake pipe (7) at the bottom.

3. A pneumatic ash conveying tank with a buffer structure according to claim 2, characterized in that: The guide plate (10) is a downwardly concave arc-shaped structure.

4. A pneumatic ash conveying tank with a buffer structure according to claim 2, characterized in that: The end face of the guide plate (10) is provided with a baffle plate (12) below the inner wall on the left side of the upper receiving pipe (6).

5. A pneumatic ash conveying tank with a buffer structure according to claim 4, characterized in that: The guide plate (10) is provided with a plurality of first diversion holes (13), and the baffle plate (12) is provided with a plurality of second diversion holes (14).

6. A pneumatic ash conveying tank with a buffer structure according to claim 5, characterized in that: Multiple guide pipes (15) are provided between the guide plate (10) and the baffle plate (12), and the two ends of the guide pipes (15) are respectively connected to the first diversion hole (13) and the second diversion hole (14).

7. A pneumatic ash conveying tank with a buffer structure according to claim 1, characterized in that: The main air inlet pipe (4) is provided with a main air inlet valve (16), the air outlet pipe (5) is provided with an air outlet valve (17), the discharge port (3) is provided with a discharge valve (18), and the left air inlet pipe (7) and the air delivery pipe (9) are provided with an air delivery valve (19).

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