A device for recovering coal ash and coal powder from a boiler

Abstract

The utility model belongs to the boiler fuel recovery technical field, concretely relates to a coal ash and coal powder device of recovery boiler, include: casing, the partition plate is fixed in the inside of casing, and the inside of casing is divided into first cavity, second cavity and third cavity, material collecting part sets up in the outer wall of casing, and material collecting part extends to the inside of casing, and the extension is located in first cavity and second cavity respectively, the air draft part sets up in the outside of casing, the adjusting part sets up in the third cavity of casing, and input end is connected with the air draft part, and output end extends and communicates to first cavity and second cavity respectively. The utility model solves the energy waste problem caused by the coal powder being treated as garbage on one hand, solves the problem of causing harm to human body and wasting manpower and material resources by manual cleaning on the other hand.

Description

Technical Field

[0001] This utility model belongs to the field of boiler fuel recovery technology, specifically relating to a device for recovering coal ash and coal powder from boilers. Background Technology

[0002] In traditional thermal power generation, boilers are prone to wear and leakage in primary air ducts and other parts after long-term operation, leading to the accumulation of ash and coal dust in the plant. Large accumulations of coal dust pose a risk of spontaneous combustion and fire, requiring frequent cleaning by maintenance personnel.

[0003] However, coal dust and ash are often collected together during cleaning, resulting in a large amount of coal dust being treated as garbage, causing serious energy waste. At the same time, traditional manual cleaning methods consume a lot of manpower and resources when cleaning up accumulated dust and ash, and the dust raised during the cleaning process can easily cause personal injury. Utility Model Content

[0004] The purpose of this invention is to provide a device for recycling boiler ash and coal dust that can reduce resource waste and minimize the harm to human health caused by dust during the cleaning process.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An apparatus for recovering coal ash and pulverized coal from a boiler, comprising:

[0007] case;

[0008] A partition plate is fixed inside the housing and divides the interior of the housing into a first cavity, a second cavity, and a third cavity;

[0009] A material collection section is disposed on the outer wall of the shell and extends into the interior of the shell, with the extension points located in the first cavity and the second cavity, respectively.

[0010] An air intake section is disposed on the outside of the housing;

[0011] An adjustment unit is provided inside the third cavity of the housing, with its input end connected to the air intake unit and its output end extending and connecting to the first cavity and the second cavity respectively.

[0012] During operation, the connection between the first or second chamber and the exhaust fan is switched according to the working conditions. The exhaust fan is activated and a negative pressure is formed. The material is then drawn into the first or second chamber through the material collection unit.

[0013] Furthermore, the material collection unit includes:

[0014] A telescopic straw, wherein the telescopic straw is disposed on the outer wall of the housing;

[0015] The recycling pipe is divided into a main pipe and a branch pipe. The main pipe is located in the third cavity and one end is connected to the telescopic suction tube. The other end is connected to the branch pipe to form a T-shaped pipe. The branch pipe extends into the first cavity and the second cavity.

[0016] The check valves are respectively installed inside the branch pipes located in the first and second cavities.

[0017] Furthermore, the air intake section includes:

[0018] Exhaust fan;

[0019] A battery compartment, which is located on the side of the induced draft fan;

[0020] A silencer is connected to the air outlet of the induced draft fan.

[0021] Furthermore, the adjustment unit includes:

[0022] The first exhaust duct is located inside the third cavity and its end is connected to the exhaust fan;

[0023] The second and third exhaust ducts are connected at one end to the end of the first exhaust duct away from the exhaust fan via a T-joint, and at the other end to the first and second cavities respectively.

[0024] A three-way ball valve is located at the T-joint and is controlled by a control handle on the outer wall of the housing.

[0025] The first filter chamber is disposed inside the first cavity and is connected to the second air duct.

[0026] The second filter chamber is located inside the second cavity and is connected to the first air duct.

[0027] The filter screens cover the positions where the first filter chamber and the first cavity body are connected, as well as the positions where the second filter chamber and the second cavity body are connected.

[0028] Furthermore, the branch pipe includes: a coal ash recovery pipe and a coal powder recovery pipe, wherein the coal ash recovery pipe passes through the first cavity and the third cavity, and the coal powder recovery pipe passes through the second cavity and the third cavity.

[0029] Furthermore, the side wall of the housing is provided with ash collection holes and powder collection holes that communicate with the first cavity and the second cavity, and the ash collection holes and powder collection holes are provided with corresponding opening and closing doors.

[0030] Furthermore, a filter replacement door is provided at the position corresponding to the filter screen on the housing.

[0031] Furthermore, the bottom of the housing is provided with casters and the top is provided with a handle.

[0032] Furthermore, a fourth cavity is provided between the top of the housing and the partition plate.

[0033] Furthermore, the shell is made of steel or aluminum alloy.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] This invention achieves the collection of different materials by incorporating a partition plate, a material collection section, an exhaust fan, and an adjustment section within the housing. Specifically, the partition plate is positioned inside the housing, dividing it into a first chamber, a second chamber, and a third chamber. The first and second chambers are located on either side to store coal powder and coal ash, respectively. The third chamber acts as an intermediary, connecting to the exhaust fan outside the housing via an internal adjustment section. Simultaneously, the material collection section extends from the third chamber into both the first and second chambers. This structure allows the connection between the exhaust fan and the two chambers to be switched via the adjustment section, creating negative pressure in the connected chambers, and finally collecting the material into the current chamber via the material collection section. This solves the problem of resource waste caused by coal powder being mixed with coal ash and disposed of as garbage. Simultaneously, it improves the working environment for cleaning personnel, reduces the risk of dust and secondary pollution, and enhances cleaning efficiency and safety. Attached Figure Description

[0036] Figure 1 This is a perspective view of the present utility model;

[0037] Figure 2 This is a front view of the present invention;

[0038] Figure 3 This is a front view of the interior of the casing of this utility model;

[0039] Figure 4 This is a rear view of the interior of the housing of this utility model;

[0040] Figure 5 This is a diagram of the conveying pipeline of this utility model.

[0041] In the diagram: 1. Shell; 10. Filter replacement door; 11. Ash collection hole; 12. Powder collection hole; 13. Casters; 2. Exhaust fan; 20. Exhaust fan; 21. Battery compartment; 22. Adjustment switch; 200. Air outlet; 23. Silencer; 3. Material collection section; 30. Telescopic suction pipe; 31. Recycling pipe; 310. Coal ash recycling pipe; 311. Coal powder recycling pipe; 32. Check valve; 4. Adjustment section; 40. Three-way ball valve; 41. First filter chamber; 42. Second filter chamber; 43. Filter screen; 44. First exhaust duct; 45. Second exhaust duct; 46. Third exhaust duct; 5. First cavity; 6. Second cavity; 7. Third cavity; 8. Fourth cavity. Detailed Implementation

[0042] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0043] like Figures 1-5 In this embodiment, it includes: a housing 1, a partition plate, a material collection section 3, an air intake section 2, and an adjustment section 4;

[0044] Two partition plates are vertically fixed inside the housing 1, dividing the interior of the housing 1 into a first cavity 5, a second cavity 6, and a third cavity 7.

[0045] It should be noted that the first cavity 5 and the second cavity 6 are symmetrically arranged on both sides of the partition plate and are used to contain coal ash and coal powder respectively, and the third cavity 7 is arranged between the two partition plates.

[0046] Material collection section 3 is located on the outer wall of housing 1;

[0047] It should be noted that the material collection unit 3 includes: a telescopic suction tube 30, a recycling pipe 31, and a check valve 43;

[0048] The telescopic suction tube 30 is arranged on the outer wall of the housing 1, with one end serving as the suction port and the other end extending into the interior of the third cavity 7. The extended end is connected to the recycling pipe 31 inside the cavity.

[0049] The recycling pipe 31 is divided into a main pipe and a branch pipe. The main pipe is located in the third cavity 7 and one end is connected to the telescopic suction pipe 30. The other end is connected to the branch pipe to form a T-shaped pipe. The branch pipe extends into the first cavity 5 and the second cavity 6.

[0050] The branch pipe is divided into a coal ash recovery pipe 310 and a coal powder recovery pipe 311. The coal ash recovery pipe 310 runs through the first cavity 5 and the third cavity 7, and the coal powder recovery pipe 311 runs through the second cavity 6 and the third cavity 7.

[0051] The coal ash recovery pipe 310 and the coal powder recovery pipe 311 are respectively located inside the pipes of the first cavity 5 and the second cavity 6 and are respectively equipped with a reversing valve 43.

[0052] Specifically, when a negative pressure is generated inside the first chamber 5 or the second chamber 6, the check valve 43, which was originally closed, automatically opens under the influence of the negative pressure, allowing coal powder or coal ash to smoothly enter the coal powder recovery pipe 311 or the coal ash recovery pipe 310. The function of the check valve 32 is to prevent material backflow, ensure the unidirectional flow of coal powder or coal ash in the material recovery pipe, avoid material backflow, and ensure the high efficiency and stability of the material collection system.

[0053] The air intake section 2 is located at the top of the housing 1;

[0054] It should be noted that the air intake section 2 includes an air intake fan 20, a battery compartment 21, and a silencer 23;

[0055] Among them, the battery compartment 21 is located on the side of the induced draft fan 20 to supply power to it, and the silencer 23 is located at the air outlet 200 of the induced draft fan 20.

[0056] Specifically, by adjusting switch 22 to start or stop the induced draft fan 20, the induced draft fan 20 generates negative pressure inside the first cavity 5 or the second cavity 6;

[0057] Adjustment unit 4 is disposed inside the third cavity 7 of housing 1, and its input end is connected to the air duct 2, and its output end extends and connects to the first cavity 5 and the second cavity 6 respectively.

[0058] It should be noted that the adjustment unit 4 includes:

[0059] The first air duct 44 is located inside the third cavity 7 and its end is connected to the air blower 20;

[0060] The second air duct 45 and the third air duct 46 are connected at one end to the end of the first air duct 44 away from the blower 20 via a T-joint, and the other end extends to the first cavity 5 and the second cavity 6 respectively.

[0061] Three-way ball valve 40 is located at the T-joint and is controlled by a control handle on the outer wall of housing 1;

[0062] The first filter chamber 41 is located inside the first cavity 5 and is connected to the second air duct 45.

[0063] The second filter chamber 42 is located inside the second cavity 6 and is connected to the first air duct 44.

[0064] Filter screen 43 covers the positions where the first filter chamber 41 and the first cavity 5 and the second filter chamber 42 and the second cavity 6 are connected.

[0065] Specifically, depending on the operating conditions, the three-way ball valve 40 is controlled by adjusting the handle to connect the first induced draft pipe 44 with the second induced draft pipe 45 or the third induced draft pipe 46. At this time, the induced draft fan 20 starts, forming a negative pressure. Air enters the main pipe through the telescopic suction pipe 30. Then, based on the negative pressure formed by the first cavity 5 and the second cavity 6 connected to the coal ash recovery pipe 310 or the coal powder recovery pipe 311, the backflow valve 43 of the current pipe is subjected to negative pressure and automatically opens, allowing the material to smoothly enter the current cavity. At the same time, because a filter screen 43 is installed, the material is blocked in the first filter cavity 41 or the second filter cavity 42, allowing only clean air to enter the induced draft fan 20 through the induced draft pipe. This ensures material collection efficiency and avoids material entering the induced draft fan 20, which would cause equipment wear.

[0066] In this embodiment, the side wall of the housing 1 is provided with a dust collection hole 11 and a powder collection hole 12 that communicate with the first cavity 5 and the second cavity 6, and the dust collection hole 11 and the powder collection hole 12 are provided with corresponding opening and closing doors.

[0067] Specifically, after collecting coal ash or coal powder, the material is removed by opening the corresponding closed door.

[0068] In this embodiment, a filter replacement door 10 is provided at the position corresponding to the filter screen 43 on the housing 1.

[0069] In this embodiment, the bottom of the housing 1 is provided with casters 13 and the top is provided with a handle, which improves the convenience and mobility of the device.

[0070] Specifically, the omnidirectional wheels 13 allow the device to move easily in different directions, reducing the difficulty of carrying it for the user. The handle design provides a more stable grip, making it convenient to lift or carry when needed.

[0071] In this embodiment, a fourth cavity 8 is provided between the top of the housing 1 and the partition plate;

[0072] Specifically, by setting up a fourth chamber 8, the space of which forms an airflow buffer zone, the impact of airflow fluctuations during the induced draft process on the negative pressure stability of the first chamber 5 and the second chamber 6 is reduced, making material collection more stable.

[0073] In this embodiment, the shell 1 is made of steel or aluminum alloy.

[0074] Working principle:

[0075] The remaining coal powder and coal ash should be piled up separately.

[0076] (1) Coal ash recovery status

[0077] First, point the handle towards the coal ash side and simultaneously activate the three-way ball valve 40 to connect the second induced draft pipe 45 and the first induced draft pipe 44 corresponding to the first chamber 5. Turn on the regulating switch 22; the induced draft fan 20 will then be powered on and rotate, drawing air out of the first chamber 5 through the pipes. Next, align the telescopic suction pipe 30 with the coal ash. The coal ash enters through the telescopic suction pipe 30, and due to the suction, the check valve 32 opens, drawing the coal ash into the first chamber 5 for recycling.

[0078] (2) Coal powder recovery status

[0079] First, point the handle towards the pulverized coal side, and simultaneously activate the three-way ball valve 40 to connect the third induced draft pipe 46 corresponding to the second chamber 6 with the first induced draft pipe 44. Turn on the regulating switch 22; the induced draft fan 20 will then be powered on and rotate, drawing air out of the second chamber 6 through the pipes. Next, align the telescopic suction pipe 30 with the pulverized coal. The pulverized coal enters through the telescopic suction pipe 30, and due to the suction, the check valve 32 opens, drawing the pulverized coal into the second chamber 6 for recycling.

[0080] 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 device for recovering coal ash and coal fines from a boiler, characterized by, include: Shell (1); A partition plate is fixed inside the housing (1) and divides the interior of the housing (1) into a first cavity (5), a second cavity (6) and a third cavity (7); Material collection section (3) is provided on the outer wall of the housing (1) and extends into the interior of the housing (1), with the extension points located in the first cavity (5) and the second cavity (6) respectively. An air intake section (2) is disposed outside the housing (1); Adjustment unit (4) is provided inside the third cavity (7) of the housing (1), and its input end is connected to the air intake unit (2), and its output end extends and connects to the first cavity (5) and the second cavity (6) respectively. During operation, the operation adjustment unit (4) switches the connection between the first cavity (5) or the second cavity (6) and the air intake unit (2), starts the air intake unit (2) and forms a negative pressure, and the material is sucked into the first cavity (5) or the second cavity (6) through the material collection unit (3).

2. The apparatus for recovering coal ash and coal fines from a boiler according to claim 1, wherein The material collection unit (3) includes: A telescopic straw (30) is provided on the outer wall of the housing (1); The recycling pipe (31) is divided into a main pipe and a branch pipe. The main pipe is set in the third cavity (7) and one end is connected to the telescopic suction pipe (30). The other end is connected to the branch pipe to form a T-shaped pipe. The branch pipe extends into the first cavity (5) and the second cavity (6). Check valve (32), which is respectively installed inside the branch pipe in the first cavity (5) and the second cavity (6).

3. The apparatus of claim 2, wherein, The air intake section (2) includes: Exhaust fan (20); Battery compartment (21), the battery compartment (21) is disposed on the side of the induced draft fan (20); A silencer (23) is connected to the air outlet (200) of the induced draft fan (20).

4. The apparatus for recovering coal ash and coal fines from a boiler as claimed in claim 3, wherein The adjustment unit (4) includes: The first air duct (44) is located inside the third cavity (7) and its end is connected to the blower (20); The second air duct (45) and the third air duct (46) are connected at one end to the end of the first air duct (44) away from the blower (20) via a T-joint, and at the other end to the first cavity (5) and the second cavity (6) respectively. A three-way ball valve (40) is provided at the T-joint and is controlled by a control handle on the outer wall of the housing (1); The first filter chamber (41) is located inside the first cavity (5) and is connected to the second air duct (45); The second filter chamber (42) is disposed inside the second cavity (6) and is connected to the first air duct (44); The filter screen (43) covers the positions where the first filter chamber (41) and the first cavity (5) are connected, and the second filter chamber (42) and the second cavity (6) are connected.

5. The apparatus of claim 2, wherein, The branch pipes include: a coal ash recovery pipe (310) and a coal powder recovery pipe (311). The coal ash recovery pipe (310) passes through the first cavity (5) and the third cavity (7), and the coal powder recovery pipe (311) passes through the second cavity (6) and the third cavity (7).

6. The device for recovering coal ash and pulverized coal from a boiler according to claim 4, characterized in that, The side wall of the housing (1) is provided with a dust collection hole (11) and a powder collection hole (12) that communicate with the first cavity (5) and the second cavity (6), and the dust collection hole (11) and the powder collection hole (12) are provided with corresponding opening and closing doors.

7. The apparatus of claim 6, wherein, The housing (1) is provided with a filter replacement door (10) at the position corresponding to the filter screen (43).

8. The apparatus of claim 7, wherein, The bottom of the housing (1) is provided with casters (13), and the top is provided with a handle.

9. The apparatus of claim 7, wherein, A fourth cavity (8) is provided between the top of the housing (1) and the partition plate.

10. The apparatus of claim 1, wherein, The shell (1) is made of steel or aluminum alloy.

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