Pulverized coal bunker

Abstract

The utility model relates to the technical field of pulverized coal bunkers, in particular to a pulverized coal bunker which comprises a storage tank, a plurality of electric heating nets are installed at the position, close to the top, in the storage tank, an air draft assembly is installed at the position, close to the top, of the outer wall of the storage tank, and the air draft assembly comprises an air draft pipe communicated with the interior of the storage tank. And an air pump and a filter box are mounted on the exhaust pipe. The electric heating net is mounted in the storage tank close to the top and used for heating air at the top of the storage tank, so that moisture in the air is removed, and pulverized coal is prevented from caking or being affected with damp. An air draft assembly is installed at the position, close to the top, of the outer wall of the storage tank, air in the storage tank is extracted through an air pump and a filter box, so that moisture-containing air in the storage tank is removed, and the interior of the storage tank is kept dry.

Description

Technical Field

[0001] This utility model relates to the field of pulverized coal storage technology, specifically a pulverized coal storage silo. Background Technology

[0002] In the technical field of pulverized coal storage, the storage and management of pulverized coal has always been an important issue. As an important industrial raw material, pulverized coal has wide applications in energy, chemical and other fields. However, pulverized coal is prone to moisture absorption and clumping during storage, which not only affects the quality of the pulverized coal but also brings inconvenience to subsequent processing and use.

[0003] Traditional pulverized coal silos often have several design flaws. Firstly, controlling the humidity inside the silo is difficult, especially in humid environments where pulverized coal easily absorbs moisture from the air, leading to clumping. This not only reduces the flowability of the pulverized coal but may also affect its combustion performance. Therefore, we propose a new type of pulverized coal silo. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a pulverized coal silo.

[0005] The technical solution of this utility model is:

[0006] A pulverized coal silo includes a storage tank. Several electric heating grids are installed near the top inside the storage tank. A ventilation assembly is installed near the top of the outer wall of the storage tank. The ventilation assembly includes an exhaust pipe communicating with the inside of the storage tank. An air pump and a filter box are installed on the exhaust pipe. Filter cotton is installed inside the filter box. A stirring mechanism is installed inside the storage tank. A feeding hopper is installed near the top of the outer wall of the storage tank. A first sealing valve is installed on the feeding hopper. A discharge hopper is integrally formed at the bottom of the storage tank. A discharge pipe assembly is installed at the bottom of the discharge hopper, and the discharge pipe assembly has two discharge ports.

[0007] As a preferred technical solution, an annular support plate is fixedly installed on the outer circumference of the storage tank near the bottom, and at least three support legs arranged in a circular array are fixedly installed on the bottom of the annular support plate.

[0008] As a preferred technical solution, the stirring mechanism includes a stirring shaft rotatably mounted on the inner wall of the top of the storage tank, a plurality of stirring blades fixedly mounted on the outer circumference of the stirring shaft, and a stirring motor with an output shaft coaxially fixed to the top of the storage tank.

[0009] As a preferred technical solution, the outer wall of the storage tank includes an outer shell on the outside and a support layer on the inside, with an insulation layer provided between the support layer and the outer shell.

[0010] As a preferred technical solution, the feeding pipe assembly includes a connecting pipe installed at the bottom of the feeding hopper. The bottom of the connecting pipe has two symmetrically integrally formed extension pipes, which are connected to the connecting pipe. A second sealing valve is installed on the connecting pipe.

[0011] As a preferred technical solution, the filter box has an opening on one side of its outer wall, and a cover plate is fixedly installed at the opening by bolts.

[0012] As a preferred technical solution, the electric heating mesh is located above the discharge port of the feeding hopper, and the stirring blades are located below the electric heating mesh.

[0013] As a preferred technical solution, the connecting pipe is rotatably mounted on the bottom of the hopper via a sealed bearing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, an electric heating grid is installed near the top of the storage tank to heat the air at the top of the tank, removing moisture and preventing coal powder from clumping or becoming damp. An exhaust system is installed near the top of the outer wall of the storage tank, using an air pump and filter box to extract gas from the tank, removing any moisture-containing gases and keeping the tank dry. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the storage tank near the top in this utility model;

[0018] Figure 3 In this utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the internal structure of the filter box in this utility model;

[0020] Figure 5 This is a schematic diagram of the material feeding tube assembly in this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Storage tank; 10. Feed hopper; 11. Outer shell; 12. Support layer; 13. Insulation layer; 2. Annular support plate; 3. Support leg; 4. Feed pipe assembly; 40. Extension pipe; 41. Connecting pipe; 42. Second sealing valve; 5. Ventilation assembly; 50. Air extraction pipe; 51. Air pump; 52. Filter box; 520. Filter cotton; 6. Stirring motor; 60. Stirring shaft; 61. Stirring blade; 7. Feed hopper; 70. First sealing valve; 8. Electric heating grid. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution:

[0025] A pulverized coal silo includes a storage tank 1. Several electric heating grids 8 are installed near the top inside the storage tank 1. An exhaust assembly 5 is installed near the top of the outer wall of the storage tank 1. The exhaust assembly 5 includes an exhaust pipe 50 communicating with the interior of the storage tank 1. An air pump 51 and a filter box 52 are installed on the exhaust pipe 50. Filter cotton 520 is installed inside the filter box 52. A stirring mechanism is installed inside the storage tank 1. A feeding hopper 7 is installed near the top of the outer wall of the storage tank 1. A first sealing valve 70 is installed on the feeding hopper 7. A discharge hopper 10 is integrally formed at the bottom of the storage tank 1. A discharge pipe assembly 4 is installed at the bottom of the discharge hopper 10, and the discharge pipe assembly 4 has two discharge ports. This pulverized coal silo includes a storage tank 1. The electric heating grids 8 installed near the top inside the storage tank 1 are used to heat the air at the top of the storage tank 1 to remove moisture from the air and prevent pulverized coal from clumping or becoming damp. A ventilation assembly 5 is installed near the top of the outer wall of storage tank 1. An air pump 51 and a filter box 52 extract gas from storage tank 1 to remove moisture-containing gases and maintain its dryness. An internal stirring mechanism is also provided in storage tank 1 to agitate the pulverized coal and prevent sedimentation. The feeding hopper 7 and the first sealing valve 70 facilitate the addition of pulverized coal, while the discharge hopper 10 and the discharge pipe assembly 4 ensure the orderly discharge of the pulverized coal. The overall design improves the storage and processing efficiency of pulverized coal and ensures its quality.

[0026] As a preferred embodiment, an annular support plate 2 is fixedly installed on the outer circumference of the storage tank 1 near the bottom, and at least three support legs 3 arranged in a circular array are fixedly installed on the bottom of the annular support plate 2. This design improves the stability and load-bearing capacity of the pulverized coal silo, allowing it to be placed stably on the ground, while also helping to distribute the weight of the storage tank 1 and reduce local pressure.

[0027] In a preferred embodiment, the stirring mechanism includes a stirring shaft 60 rotatably mounted on the inner wall of the top of the storage tank 1, with a plurality of stirring blades 61 fixedly mounted on the outer circumference of the stirring shaft 60, and a stirring motor 6 with its output shaft coaxially fixed to the top of the storage tank 1. This design allows the pulverized coal to be fully stirred in the storage tank 1, improving the uniformity and flowability of the pulverized coal.

[0028] In a preferred embodiment, the outer wall of the storage tank 1 includes an outer shell 11 on the outer side and a support layer 12 on the inner side, with an insulation layer 13 provided between the support layer 12 and the outer shell 11. The insulation layer 13 effectively reduces the heat exchange between the inside and outside of the storage tank 1, improves the heat preservation effect of the pulverized coal, and reduces energy consumption.

[0029] In a preferred embodiment, the feed pipe assembly 4 includes a connecting pipe 41 installed at the bottom of the feed hopper 10. Two extension pipes 40 are integrally formed symmetrically at the bottom of the connecting pipe 41, communicating with the connecting pipe 41. A second sealing valve 42 is installed on the connecting pipe 41. This design allows pulverized coal to be discharged orderly from the storage tank 1, and the second sealing valve 42 enables quantitative discharge of pulverized coal, improving the utilization efficiency of the pulverized coal.

[0030] As a preferred embodiment, the filter box 52 has an opening on one side of its outer wall, and a cover plate is fixedly installed at the opening by bolts. This design facilitates the maintenance and cleaning of the filter box 52. When the filter cotton 520 is clogged or needs to be replaced, the cover plate can be easily opened for replacement or cleaning.

[0031] In a preferred embodiment, the electric heating mesh 8 is positioned above the discharge port of the feeding hopper 7, and the stirring blades 61 are positioned below the electric heating mesh 8. This design ensures that newly added pulverized coal falls onto the electric heating mesh 8.

[0032] In a preferred embodiment, the connecting pipe 41 is rotatably mounted to the bottom of the hopper 10 via a sealed bearing. This design allows the connecting pipe 41 to rotate relative to the hopper 10 while maintaining a sealed state, facilitating the installation and use of the pulverized coal silo, and also improving the flexibility and reliability of pulverized coal discharge.

[0033] When using the pulverized coal silo of this utility model:

[0034] Coal powder addition and preliminary treatment: When coal powder needs to be added to the coal powder silo, open the first sealing valve 70 on the feeding hopper 7, and the coal powder enters the storage tank 1 through the feeding hopper 7. An electric heating grid 8 is provided above the discharge port of the feeding hopper 7, which can heat the air at the top of the storage tank to remove moisture from the air, so that the storage tank remains dry.

[0035] Air handling inside storage tank 1: An exhaust assembly 5 is installed on the outer wall of storage tank 1 near the top. The exhaust assembly 5 includes an exhaust pipe 50 communicating with the inside of storage tank 1, an air pump 51, and a filter box 52. When the air pump 51 operates, it draws gas from inside storage tank 1 through the exhaust pipe 50 and sends the gas containing moisture or impurities into the filter box 52. The filter box 52 is designed to prevent coal dust from being drawn out of storage tank 1.

[0036] Stirring and uniform heating of pulverized coal: The storage tank 1 is equipped with a stirring mechanism, which includes a stirring shaft 60 and several stirring blades 61. The stirring shaft 60 is driven to rotate by a stirring motor 6. When the stirring motor 6 is working, it drives the stirring shaft 60 and the stirring blades 61 to rotate, which fully stirs the pulverized coal in the storage tank 1. Heat is transferred through the air to ensure that the pulverized coal is heated evenly and to prevent the pulverized coal from settling at the bottom of the storage tank 1.

[0037] Thermal storage of pulverized coal: The outer wall of storage tank 1 includes an outer shell 11, a support layer 12, and an insulation layer 13. The insulation layer 13 effectively reduces the heat exchange between the inside and outside of storage tank 1, improving the thermal insulation effect of pulverized coal. With the combined action of the electric heating mesh 8 and the stirring mechanism, pulverized coal is stored at a suitable temperature, reducing energy consumption and maintaining the quality of pulverized coal.

[0038] Orderly discharge of pulverized coal: When pulverized coal needs to be discharged, the second sealing valve 42 at the bottom of the discharge hopper 10 is opened. The pulverized coal in the storage tank 1 enters the connecting pipe 41 of the discharge pipe assembly 4 through the discharge hopper 10, and then is discharged in an orderly manner through the two extension pipes 40. The connecting pipe 41 is rotatably mounted on the bottom of the discharge hopper 10 via a sealed bearing, and can rotate relative to the discharge hopper 10 while maintaining a sealed state. This facilitates the installation and use of the pulverized coal silo, and also improves the flexibility and reliability of pulverized coal discharge.

[0039] In summary, the coal powder silo of this utility model, through the design of the electric heating grid 8, the exhaust assembly 5, the stirring mechanism, the insulation layer 13, and the discharge pipe assembly 4, achieves efficient storage and processing of coal powder. Optimizations have been made in all aspects, including feeding, storage, stirring, and discharging, improving the efficiency of coal powder storage and processing and ensuring the quality of the coal powder.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pulverized coal silo, characterized in that: The system includes a storage tank (1), which has several electric heating grids (8) installed near the top inside. The storage tank (1) has an exhaust assembly (5) installed near the top on the outer wall of the storage tank (1). The exhaust assembly (5) includes an exhaust pipe (50) that communicates with the inside of the storage tank (1). An air pump (51) and a filter box (52) are installed on the exhaust pipe (50). Filter cotton (520) is installed inside the filter box (52). A stirring mechanism is installed inside the storage tank (1). A feeding hopper (7) is installed near the top on the outer wall of the storage tank (1). A first sealing valve (70) is installed on the feeding hopper (7). A feeding hopper (10) is integrally formed at the bottom of the storage tank (1). A feeding pipe assembly (4) is installed at the bottom of the feeding hopper (10). The feeding pipe assembly (4) has two discharge ports.

2. The pulverized coal silo as described in claim 1, characterized in that: The storage tank (1) has an annular support plate (2) fixedly installed on its outer circumference near the bottom. At least three support legs (3) arranged in a circular array are fixedly installed on the bottom of the annular support plate (2).

3. The pulverized coal silo as described in claim 2, characterized in that: The stirring mechanism includes a stirring shaft (60) rotatably mounted on the inner wall of the top of the storage tank (1), a plurality of stirring blades (61) are fixedly mounted on the outer circumference of the stirring shaft (60), and a stirring motor (6) with an output shaft coaxially fixed to the top of the storage tank (1).

4. The pulverized coal silo as described in claim 3, characterized in that: The outer wall of the storage tank (1) includes an outer shell (11) on the outer side and a support layer (12) on the inner side, with an insulation layer (13) provided between the support layer (12) and the outer shell (11).

5. The pulverized coal silo as described in claim 4, characterized in that: The feeding pipe assembly (4) includes a connecting pipe (41) installed at the bottom of the feeding hopper (10). The bottom of the connecting pipe (41) has two extension pipes (40) integrally formed symmetrically. The extension pipes (40) are connected to the connecting pipe (41). A second sealing valve (42) is installed on the connecting pipe (41).

6. The pulverized coal silo as described in claim 5, characterized in that: The filter box (52) has an opening on one side of its outer wall, and a cover plate is fixedly installed at the opening by bolts.

7. The pulverized coal silo as described in claim 6, characterized in that: The electric heating mesh (8) is located above the discharge port of the feeding hopper (7), and the stirring blade (61) is located below the electric heating mesh (8).

8. The pulverized coal silo as described in claim 7, characterized in that: The connecting pipe (41) is rotatably mounted on the bottom of the hopper (10) via a sealed bearing.

Images