Pneumatic ash conveying device

Abstract

The ash pneumatic conveying device comprises a tank body, an ash inlet is formed in the top end of the tank body, an ash inlet valve is arranged on the ash inlet, a pipeline penetrates into the bottom of the tank body, the upper end of the pipeline penetrating into the tank body is provided with an opening, and the pipeline extending out of the outer end of one side of the tank body serves as an air inlet. The pipeline extending out of the outer end of the other side of the tank body serves as an ash conveying pipe; an air inlet pipe is arranged in the air inlet and extends into the tank body, a soot blowing nozzle is arranged at the tail end of the air inlet pipe, the soot blowing nozzle is close to the soot conveying pipe, and an air inlet valve is arranged on the air inlet pipe. The cigarette ash pneumatic conveying device effectively achieves pneumatic conveying of cigarette ash, and is simple in structure, easy to manufacture and easy to maintain.

Description

Technical Field

[0001] The utility model relates to a device for conveying ash, in particular to a pneumatic ash conveying device. Background Art

[0002] Pneumatic conveying, also known as air flow conveying, uses the energy of air flow to convey granular materials along the air flow direction in a closed pipe. It is a specific application of fluidization technology. The pneumatic conveying device has a simple structure and is easy to operate. It can be used for horizontal, vertical or inclined conveying. During the conveying process, physical operations such as heating, cooling, drying and air flow classification of materials or certain chemical operations can also be performed simultaneously. Common pneumatic conveying devices include air conveying chute, bottom-blowing bin pump, pneumatic lifting tank, and down-drawn bin pump. However, most pneumatic conveying devices are difficult to manufacture, and some conveying devices require casting or pressure vessel manufacturing qualifications. Some pneumatic conveying devices require higher pneumatic conditions. Therefore, a ash pneumatic conveying device that is easy to manufacture and maintain and has a strong conveying capacity is necessary. Utility Model Content

[0003] The utility model relates to a smoke ash pneumatic conveying device which is easy to manufacture and maintain.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A smoke ash pneumatic conveying device comprises a tank body, an ash inlet is provided at the top of the tank body, an ash inlet valve is provided on the ash inlet, a pipe is passed through the bottom of the tank body, the upper end of the pipe passing through the tank body is opened, the pipe extending from the outer end of one side of the tank body serves as an air inlet, and the pipe extending from the outer end of the other side of the tank body serves as an ash conveying pipe; an air inlet pipe is provided in the air inlet, the air inlet pipe extends into the tank body, the end of the air inlet pipe is an ash blowing nozzle, the ash blowing nozzle is close to the ash conveying pipe, and an air inlet valve is provided on the air inlet pipe. The ash blowing nozzle is a conical ash blowing nozzle, and the pipe diameter is reduced at the outlet of the ash blowing nozzle.

[0006] The beneficial effects of the utility model are as follows: the utility model is provided with a tank body, a pipe is inserted into the bottom of the tank body, the pipe extending out of the outer end of one side of the tank body serves as an air inlet, and the pipe extending out of the outer end of the other side of the tank body serves as an ash conveying pipe; an air inlet pipe is provided in the air inlet, the air inlet pipe extends into the interior of the tank body, and a conical ash blowing nozzle is provided at the end of the air inlet pipe. When the air inlet valve is opened, the gas is output from the ash blowing nozzle, and the gas is sprayed from the ash blowing nozzle to the ash conveying pipe. At this time, part of the ash is transported out through the ash conveying pipe. At the same time, negative pressure is formed at the ash blowing nozzle, and the ash in other areas is induced and attracted to the ash blowing nozzle due to the negative pressure, and is transported to the ash pipe along with the airflow, and then transported out. The utility model effectively realizes the pneumatic conveying of ash, has a simple structure, is easy to manufacture, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1It is a structural schematic diagram of the utility model;

[0008] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0009] In the figure: 1-tank body, 2-ash inlet, 3-ash inlet valve, 4-air inlet, 5-ash conveying pipe, 6-air inlet pipe, 7-ash blowing nozzle, 8-air inlet valve. DETAILED DESCRIPTION

[0010] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0011] like Figure 1-2 The ash pneumatic conveying device shown comprises a tank body 1, an ash inlet 2 is provided at the top of the tank body 1, an ash inlet valve 3 is provided on the ash inlet 2, a pipe is passed through the bottom of the tank body 1, the upper end of the pipe passing through the tank body 1 is opened, the pipe extending from the outer end of one side of the tank body 1 is used as an air inlet 4, and the pipe extending from the outer end of the other side of the tank body 1 is used as an ash conveying pipe 5; an air inlet pipe 6 is provided in the air inlet 4, the air inlet pipe 6 extends into the tank body 1, the end of the air inlet pipe 6 is an ash blowing nozzle 7, the ash blowing nozzle 7 is close to the ash conveying pipe 5, and an air inlet valve 8 is provided on the air inlet pipe 6. The ash blowing nozzle 7 is a conical ash blowing nozzle, and the pipe diameter is reduced at the outlet of the ash blowing nozzle.

[0012] The utility model mainly feeds materials by switching on and off the ash feeding valve and intakes air by switching on and off the air intake valve, so as to realize feeding-intake-conveying ash in the tank body, and the ash is transported through this cycle.

[0013] The main function of the tank is to serve as a container for ash. After the ash inlet valve is opened, the tank contains the ash. After the ash inlet valve is closed, the tank is isolated from the upper part of the ash inlet valve. Then the air inlet valve is opened. A certain positive pressure is formed in the tank. The ash in the tank is transported out of the ash pipe along with the air flow. The characteristic of the tank is that it is just a tank with a height of 1000m, a diameter of 600mm, and a thickness of 20mm. It has a simple shape and is easy to manufacture.

[0014] The soot blowing nozzle is a key component of the pneumatic conveying device. When the air inlet valve is opened, the gas is output from the soot blowing nozzle and sprayed to the ash conveying pipe. At this time, part of the soot is conveyed out through the ash conveying pipe. At the same time, negative pressure is formed at the soot blowing nozzle, and the soot in other areas is induced to be attracted to the soot blowing nozzle due to the negative pressure, and is conveyed to the soot pipe with the air flow, and then conveyed out. Until there is no soot in the tank, there is only gas in the soot pipe, so the pressure in the soot pipe drops below a certain value. Then close the air inlet valve. Open the ash inlet valve and convey the soot again.

[0015] The Laval effect is used to reduce the pipe diameter at the outlet of the soot blowing nozzle. The soot blowing nozzle must enter the interior of the tank body and be close to the ash conveying pipe. Only in this way can the gas coming out of the soot blowing nozzle directly blow the ash into the ash conveying pipe to prevent a large positive pressure from being generated in the tank body, thereby aggravating the wear of the ash inlet valve, or forming an ash barrier at the junction of the tank body and the ash conveying pipe to prevent the transportation of ash.

[0016] The ash conveying pipe is used to convey the soot and is made of wear-resistant material. The ash conveying pipe inside the tank body and the ash conveying pipe outside the tank body are the same pipe, ensuring that it is parallel to the soot blowing nozzle to prevent the soot in the soot blowing nozzle area from wearing the pipe and reducing the soot blowing efficiency.

[0017] The ash inlet valve is a pneumatic valve that controls the amount of ash in the tank and isolates excess ash. When the ash inlet valve is closed, positive pressure can be formed in the tank. It seals the tank so that the ash and gas in the tank can only be discharged from the ash conveying pipe.

[0018] The air inlet valve is the power source of the pneumatic conveying device. When the ash inlet valve is opened, the tank contains the ash. After the ash inlet valve is closed, the tank is isolated from the upper part of the ash inlet valve. Then open the air inlet valve. A certain positive pressure is formed in the tank. The ash in the tank is transported out of the ash pipe with the air flow. After the transportation is completed, close the air inlet valve. Open the ash inlet valve again to realize the cycle.

[0019] The utility model is mainly used for pneumatic conveying of soot, and is characterized by simple structure and easy manufacturing. Easy maintenance. Its operating principle is: after the ash inlet valve 3 is opened, the tank body 1 contains soot. After the ash inlet valve 3 is closed, the tank body 1 is isolated from the upper part of the ash inlet valve 3. Then the air inlet valve 8 is opened. When the air inlet valve 8 is opened, the gas is output from the soot blowing nozzle 7, and the gas is sprayed from the soot blowing nozzle 7 to the ash conveying pipe 5. At this time, part of the soot is conveyed out through the ash conveying pipe 5. At the same time, negative pressure is formed at the soot blowing nozzle 7, and the soot in other areas is induced to be attracted to the soot blowing nozzle 7 due to the negative pressure, and is conveyed to the soot pipe with the air flow, and then conveyed out. Until there is no soot in the tank body 1, there is only gas in the soot pipe, so the pressure in the soot pipe is reduced to below a certain value. Then the air inlet valve is closed. The ash inlet valve 3 is opened, and the soot is conveyed again. The soot pneumatic conveying device of the utility model is easy to manufacture, simple in structure, and can convey soot without forming a large positive pressure in the tank body.

Claims

1. A smoke ash pneumatic conveying device, characterized in that: The invention comprises a tank body (1), wherein the top of the tank body (1) is provided with an ash inlet (2), and the ash inlet (2) is provided with an ash inlet valve (3); a pipe is inserted into the bottom of the tank body (1), and the upper end of the pipe inserted into the tank body (1) is opened; the pipe extending from the outer end of one side of the tank body (1) serves as an air inlet (4), and the pipe extending from the outer end of the other side of the tank body (1) serves as an ash conveying pipe (5); an air inlet pipe (6) is provided in the air inlet (4), and the air inlet pipe (6) extends into the tank body (1); a soot blowing nozzle (7) is provided at the end of the air inlet pipe (6), and the soot blowing nozzle (7) is close to the ash conveying pipe (5); and an air inlet valve (8) is provided on the air inlet pipe (6).

2. The ash pneumatic conveying device according to claim 1, characterized in that: The sootblowing nozzle (7) is a conical sootblowing nozzle, and the diameter of the sootblowing nozzle is reduced at the outlet.

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