CN219407820U - Pulverized coal feeding tank - Google Patents
Pulverized coal feeding tank Download PDFInfo
- Publication number
- CN219407820U CN219407820U CN202320689568.3U CN202320689568U CN219407820U CN 219407820 U CN219407820 U CN 219407820U CN 202320689568 U CN202320689568 U CN 202320689568U CN 219407820 U CN219407820 U CN 219407820U
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- pulverized coal
- hole section
- blanking funnel
- coal feed
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- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
Abstract
The utility model provides a pulverized coal feed tank, which comprises: comprises a tank body, a blanking funnel and a filter plate; the unloading funnel fixed connection is on the inner wall of jar body to make the unloading funnel separate the inner chamber of jar body into cavity and lower cavity, be provided with the through-hole on the lateral wall of unloading funnel, the filter covers the through-hole, and fixed connection is on the lateral wall of unloading funnel, has a plurality of micropore that are used for the intercommunication cavity and lower cavity on the filter. The pressure difference between the upper cavity and the lower cavity can be reduced, damage to the blanking funnel or damage to the joint between the blanking funnel and the inner wall of the tank body caused by overlarge pressure difference is avoided, and smooth production is guaranteed.
Description
Technical Field
The utility model relates to the technical field of coal chemical industry, in particular to a pulverized coal feeding tank.
Background
In the coal chemical industry field, the fine coal feeder tank receives and stores the fine coal that fine coal lock fill was sent, then evenly divide the multichannel through its blanking funnel to send into the gasifier nozzle with fine coal, and the blanking funnel has also divided into upper and lower chamber simultaneously the inner chamber of fine coal feeder tank, and the chamber volume phase difference is great about generally, when pressurizing simultaneously, can appear great pressure differential between the upper and lower chamber. Because the unloading funnel is the fillet weld with fine coal feed tank inner wall and is connected, great pressure differential leads to the unloading funnel to appear damaging or unloading funnel and fine coal feed tank inner wall junction to take place to destroy, leads to fine coal to leak to the lower chamber, and then influences production.
Disclosure of Invention
The utility model aims to provide a pulverized coal feeding tank, which can reduce the pressure difference between an upper cavity and a lower cavity, avoid damage to a discharging funnel or damage to a connecting part between the discharging funnel and the inner wall of the tank body caused by overlarge pressure difference, and further ensure smooth production.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a pulverized coal feed tank, comprising: comprises a tank body, a blanking funnel and a filter plate;
the blanking funnel is fixedly connected to the inner wall of the tank body, so that the blanking funnel divides the inner cavity of the tank body into an upper cavity and a lower cavity, through holes are formed in the side wall of the blanking funnel, the filter plate covers the through holes and is fixedly connected to the side wall of the blanking funnel, and a plurality of micropores used for communicating the upper cavity with the lower cavity are formed in the filter plate.
Preferably, the micropores have a diameter of less than or equal to 5 μm.
Preferably, the area of the through hole is greater than or equal to 100cm 2 。
Preferably, the through hole comprises a first hole section and a second hole section with coincident axes, the diameter of the first hole section is larger than that of the second hole section, so that a circular step surface is formed between the first hole section and the second hole section, the shape of the filter plate is cylindrical, the diameter of the filter plate is larger than that of the second hole section and smaller than that of the first hole section, and the filter plate is positioned in the first hole section and fixedly connected to the step surface.
Preferably, the cross-sectional area of the second bore section is less than or equal to 100cm 2 。
Preferably, the shape of the discharging funnel is conical tapered downwards, the cone angle of the discharging funnel is alpha, and 90 degrees-alpha < beta, wherein beta is the coal dust repose angle.
Preferably, the inner cavity of the tank body is cylindrical with a vertical axis, the number of the discharging funnels is at least two, and at least two discharging funnels are distributed in a circular array by taking the axis of the inner cavity of the tank body as the center.
Preferably, on one of the discharging funnels, the number of the through holes is N, wherein N is an integer greater than 1, and the number of the filter plates is equal to the number of the through holes and corresponds to one.
Preferably, N is greater than or equal to 0.91 XnX (V1/V2), wherein N is the number of the blanking funnels, V1 is the volume of the upper cavity, and V2 is the volume of the lower cavity.
Preferably, the N through holes are uniformly distributed along the circumferential direction and/or the axial direction of the blanking funnel.
According to the pulverized coal feeding tank, through the technical scheme that the through holes are formed in the side wall of the blanking funnel, the filter plate covers the through holes and is fixedly connected to the side wall of the blanking funnel, and the filter plate is provided with the plurality of micropores for communicating the upper cavity with the lower cavity, so that the pressure difference between the upper cavity and the lower cavity can be reduced, the damage of the blanking funnel or the damage of the joint between the blanking funnel and the inner wall of the tank body caused by overlarge pressure difference is avoided, and the smooth production is further ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a pulverized coal feed tank in accordance with the present utility model;
fig. 2 is a schematic view of the filter plate mounting structure of fig. 1.
In the figure: 1-a tank body; 2-a blanking funnel; 3-a filter plate; 4-an upper cavity; 5-a lower cavity; 6-through holes; 7-a first bore section; 8-a second bore section; 9-step surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the pulverized coal feed bucket of the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and 2, a pulverized coal feed tank includes: comprises a tank body 1, a blanking funnel 2 and a filter plate 3. The blanking funnel 2 is fixedly connected to the inner wall of the tank body 1, so that the blanking funnel 2 divides the inner cavity of the tank body 1 into an upper cavity 4 and a lower cavity 5, a through hole 6 is formed in the side wall of the blanking funnel 2, the filter plate 3 covers the through hole 6 and is fixedly connected to the side wall of the blanking funnel 2, and a plurality of micropores (not shown in the figure) used for communicating the upper cavity 4 and the lower cavity 5 are formed in the filter plate 3. By adopting the technical scheme, the air circulation between the upper cavity 4 and the lower cavity 5 can be realized through the micropores on the filter plate 3, so that the occurrence of large pressure difference between the upper cavity 4 and the lower cavity 5 is avoided, the damage to the blanking funnel 2 or the damage to the joint between the blanking funnel 2 and the inner wall of the tank body 1 is caused, and the smooth production is further ensured.
In actual manufacture, the filter plate 3 is made of a material capable of bearing 1Mpa pressure, and the diameter of the micropores is smaller than or equal to 5 μm, so that air can flow through the micropores, and coal dust particles above 5 μm can be prevented from passing through the micropores in the air. At the same time, the through holes 6 are arranged at the position below the blanking funnel as much as possible, and the area is more than or equal to 100cm 2 。
As an embodiment, for exampleAs shown in fig. 2, the through hole 6 comprises a first hole section 7 and a second hole section 8 with coincident axes, the diameter of the first hole section 7 is larger than that of the second hole section 8, so that a circular step surface 9 is formed between the first hole section 7 and the second hole section, the shape of the filter plate 3 is cylindrical, the diameter of the filter plate 3 is larger than that of the second hole section 8 and smaller than that of the first hole section 7, and the filter plate 3 is positioned in the first hole section 7 and fixedly connected to the step surface 9. The filter plate 3 may be fixedly connected to the step surface 9 by welding, but is not limited thereto, and any other fixing connection method may be adopted. Wherein the cross-sectional area of the second hole section 8 is less than or equal to 100cm 2 。
As an embodiment, as shown in fig. 1, the shape of the hopper 2 is a cone tapered downward, the cone angle of the hopper 2 is α, and 90 ° - α < β, where β is the pulverized coal repose angle. The coal dust repose angle is the maximum angle of the inclined edge to the ground when the coal dust can keep a natural stable state when being piled up. By adopting the technical scheme, the pulverized coal can move in the blanking funnel 2 more smoothly.
Specifically, the inner cavity of the tank body 1 is cylindrical with a vertical axis, the number of the blanking funnels 2 can be at least two, and the at least two blanking funnels 2 are distributed in a circular array by taking the axis of the inner cavity of the tank body 1 as the center. Further, on one blanking funnel 2, the number of through holes 6 is N, where N is an integer greater than 1, and the number of filter plates 3 is equal to the number of through holes 6 and corresponds to one. In actual manufacturing, the N through holes 6 are uniformly distributed along the circumferential direction and/or the axial direction of the blanking funnel 2.
Further, N.gtoreq.0.91 XnX (V1/V2), where N is the number of the hopper 2, V1 is the volume of the upper cavity 4, and V2 is the volume of the lower cavity 5. By adopting the technical scheme, the pressure balance effect between the upper cavity 4 and the lower cavity 5 can be optimized.
The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A pulverized coal feed tank, characterized in that:
comprising the following steps: comprises a tank body (1), a blanking funnel (2) and a filter plate (3);
the blanking funnel (2) is fixedly connected to the inner wall of the tank body (1), so that the blanking funnel (2) divides the inner cavity of the tank body (1) into an upper cavity (4) and a lower cavity (5), a through hole (6) is formed in the side wall of the blanking funnel (2), the filter plate (3) covers the through hole (6) and is fixedly connected to the side wall of the blanking funnel (2), and a plurality of micropores are formed in the filter plate (3) and are used for being communicated with the upper cavity (4) and the lower cavity (5).
2. The pulverized coal feed tank as set forth in claim 1, wherein:
the micropores have a diameter of less than or equal to 5 μm.
3. The pulverized coal feed tank as set forth in claim 1, wherein:
the area of the through hole (6) is more than or equal to 100cm 2 。
4. The pulverized coal feed tank as set forth in claim 1, wherein:
the through hole (6) comprises a first hole section (7) and a second hole section (8) with coincident axes, the diameter of the first hole section (7) is larger than that of the second hole section (8), so that a circular step surface (9) is formed between the first hole section and the second hole section, the shape of the filter plate (3) is cylindrical, the diameter of the filter plate (3) is larger than that of the second hole section (8) and smaller than that of the first hole section (7), and the filter plate (3) is positioned in the first hole section (7) and fixedly connected to the step surface (9).
5. The pulverized coal feed tank as set forth in claim 4, wherein:
the cross-sectional area of the second hole section (8) is less than or equal to 100cm 2 。
6. The pulverized coal feed pot as set forth in any one of claims 1 to 5, wherein:
the shape of the blanking funnel (2) is conical tapered downwards, the cone angle of the blanking funnel (2) is alpha, and 90 degrees alpha < beta, wherein beta is the coal dust repose angle.
7. The pulverized coal feed tank as set forth in claim 6, wherein:
the inner cavity of the tank body (1) is cylindrical with a vertical axis, the number of the blanking funnels (2) is at least two, and at least two blanking funnels (2) are distributed in a circular array by taking the axis of the inner cavity of the tank body (1) as the center.
8. The pulverized coal feed tank as set forth in claim 7, wherein:
on one blanking funnel (2), the number of through holes (6) is N, wherein N is an integer larger than 1, and the number of filter plates (3) is equal to the number of the through holes (6) and corresponds to one.
9. The pulverized coal feed tank as set forth in claim 8, wherein:
n is more than or equal to 0.91 XnX (V1/V2), wherein N is the number of the blanking funnels (2), V1 is the volume of the upper cavity (4), and V2 is the volume of the lower cavity (5).
10. The pulverized coal feed tank as set forth in claim 8, wherein:
the N through holes (6) are uniformly distributed along the circumferential direction and/or the axial direction of the blanking funnel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320689568.3U CN219407820U (en) | 2023-03-31 | 2023-03-31 | Pulverized coal feeding tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320689568.3U CN219407820U (en) | 2023-03-31 | 2023-03-31 | Pulverized coal feeding tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219407820U true CN219407820U (en) | 2023-07-25 |
Family
ID=87208163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320689568.3U Active CN219407820U (en) | 2023-03-31 | 2023-03-31 | Pulverized coal feeding tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219407820U (en) |
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2023
- 2023-03-31 CN CN202320689568.3U patent/CN219407820U/en active Active
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