Fluidized bed furnace with safety protection mechanism

Abstract

The utility model relates to a fluidized bed furnace with a safety protection mechanism, which comprises a fluidized bed furnace, a gas outlet device, a waste gas treatment device, a blowback device and a collecting device, the gas outlet device is arranged at the top end of the fluidized bed furnace, the waste gas treatment device is arranged on the gas outlet device, the blowback device is arranged on the outer wall of the fluidized bed furnace, and the collecting device is arranged at the bottom end of the fluidized bed furnace. According to the utility model, the back flushing device is arranged, gas generated by combustion in the fluidized bed furnace is introduced into the gas storage box along the gas outlet pipe and the connecting pipe for storage by using the sucking pump in the back flushing device, and after combustion is completed, waste gas in the gas storage box is introduced back into the fluidized bed furnace again through the exhaust pipe; the waste gas is pressurized through the pressurizing pump and the spray head, residual substances in the fluidized bed furnace are blown into the collecting device, the cleaned waste gas is treated by the waste gas treatment device and then discharged into air, the waste gas can be utilized, the interior of the fluidized bed furnace is cleaned, and waste of resources is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed furnace technology, specifically to a fluidized bed furnace with a safety protection mechanism. Background Technology

[0002] During the use of a fluidized bed boiler, if the substances added inside produce toxic gases after heating, such as diammonium phosphate, diammonium phosphate will produce harmful gases when heated in the fluidized bed boiler, causing air pollution. Therefore, it is necessary to treat the harmful gases and release them into the air to reduce safety hazards. Existing fluidized bed boilers with safety protection mechanisms usually purify the harmful gases directly before releasing them out of the boiler, without utilizing the gases produced after heating, resulting in resource waste. Utility Model Content

[0003] The purpose of this invention is to provide a fluidized bed furnace with a safety protection mechanism to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a fluidized bed furnace with a safety protection mechanism, comprising a fluidized bed furnace, a gas outlet device, a waste gas treatment device, a backflushing device, and a collection device. The gas outlet device is located at the top of the fluidized bed furnace, the waste gas treatment device is installed on the gas outlet device, the backflushing device is located on the outer wall of the fluidized bed furnace, and the collection device is located at the bottom of the fluidized bed furnace.

[0005] The backflushing device includes an air pump, the air inlet of which is located inside the fluidized bed furnace, and an air outlet pipe at the air outlet of which is provided. An extension plate is fixedly installed on the outer wall of the fluidized bed furnace below the air pump. An air storage tank is installed on the extension plate. A connecting pipe is provided between the air storage tank and the air outlet pipe. An exhaust pipe is installed at the lower end of the air storage tank. The end of the exhaust pipe away from the air storage tank extends into the fluidized bed furnace. A pressure pump is installed on the exhaust pipe. A nozzle is connected to the end of the exhaust pipe that extends into the fluidized bed furnace.

[0006] As a preferred embodiment, the gas outlet device includes a gas outlet cylinder, which is disposed above the fluidized bed furnace, and the gas outlet cylinder is provided with multiple sets of mounting slots.

[0007] As a preferred embodiment, the waste gas treatment device includes a cylinder, and a plurality of mounting blocks are provided at the bottom end of the cylinder, the mounting blocks being adapted to the mounting groove.

[0008] As a preferred embodiment, a first slide rail is provided on the inner wall of the cylinder, a first ring is slidably disposed on the first slide rail, a filter screen is disposed on the first ring, a first slider is disposed on the outer wall of the first ring, the first slider is adapted to the first slide rail, and an annular limiting block is disposed below the first slide rail.

[0009] As a preferred embodiment, a second ring is provided on the first ring, a filter screen is provided on the second ring, a mounting hole is provided on the first ring, and a mounting post is provided at the bottom end of the second ring, the mounting post being adapted to the mounting hole.

[0010] As a preferred embodiment, the fluidized bed furnace is provided with a feed hopper, and a circular placement plate is provided inside the fluidized bed furnace. The surface of the placement plate away from the nozzle is provided with a discharge hole, and the collection device is installed below the discharge hole.

[0011] As a preferred embodiment, the collecting device includes a collecting box, a second slider is fixedly provided at the bottom of the collecting box, and a second slide rail is provided on the bottom surface of the fluidized bed furnace below the material discharge hole, the second slide rail cooperating with the second slider.

[0012] As a preferred embodiment, a handle is provided on the outer wall of the collection box.

[0013] As can be seen from the technical solution provided by this utility model above, the beneficial effects of the fluidized bed furnace with a safety protection mechanism provided by this utility model are:

[0014] In this invention, a backflush device is installed. The gas generated by combustion in the fluidized bed furnace is pumped through the exhaust pipe and connecting pipe into a gas storage tank for storage. After combustion is completed, the waste gas in the gas storage tank is returned to the fluidized bed furnace through the exhaust pipe. The waste gas is pressurized by a pressure pump and nozzles, and the residual substances on the plate inside the fluidized bed furnace are blown into the collection device. After cleaning, the waste gas can be further treated by the waste gas treatment device before being discharged into the air. The above-mentioned device can utilize the waste gas, clean the inside of the fluidized bed furnace, and reduce the waste of resources. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the air outlet device of this utility model;

[0018] Figure 4 This is a schematic diagram of the cylindrical structure of this utility model;

[0019] Figure 5 This is a schematic diagram showing the connection between the first and second rings of this utility model.

[0020] In the diagram: 1. Fluidized bed furnace; 2. Gas outlet device; 3. Waste gas treatment device; 4. Backflushing device; 5. Collection device; 11. Feed hopper; 12. Placement plate; 13. Material discharge hole; 21. Gas outlet cylinder; 22. Mounting groove; 31. Cylinder; 32. First slide rail; 33. Limiting block; 34. Mounting block; 35. First ring; 36. Filter screen; 37. First slider; 38. Mounting hole; 381. Mounting column; 39. Second ring; 41. Air pump; 42. Gas outlet pipe; 43. Gas storage tank; 44. Connecting pipe; 45. Extension plate; 46. Exhaust pipe; 47. Pressure pump; 48. Nozzle; 51. Collection box; 52. Second slide rail; 53. Second slider; 54. Handle. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figures 1-5As shown, this utility model embodiment provides a fluidized bed furnace with a safety protection mechanism, including a fluidized bed furnace 1, a gas outlet device 2, a waste gas treatment device 3, a backflushing device 4, and a collection device 5. The gas outlet device 2 is located at the top of the fluidized bed furnace 1, the waste gas treatment device 3 is installed on the gas outlet device 2, the backflushing device 4 is located on the outer wall of the fluidized bed furnace 1, and the collection device 5 is located at the bottom of the fluidized bed furnace 1.

[0027] The backflushing device 4 includes an air pump 41, the air inlet of which is located inside the fluidized bed furnace 1, and an air outlet pipe 42 provided at the air outlet of which the air pump 41 is provided. An extension plate 45 is fixedly provided on the outer wall of the fluidized bed furnace 1 at the lower end of the air pump 41. An air storage tank 43 is provided on the extension plate 45. A connecting pipe 44 is provided between the air storage tank 43 and the air outlet pipe 42. An exhaust pipe 46 is provided at the lower end of the air storage tank 43. The end of the exhaust pipe 46 away from the air storage tank 43 extends into the fluidized bed furnace 1. A pressure pump 47 is provided on the exhaust pipe 46. A nozzle 48 is connected to the end of the exhaust pipe 46 that extends into the fluidized bed furnace 1.

[0028] The gas outlet device 2 includes a gas outlet cylinder 21, which is positioned above the fluidized bed furnace 1. The gas outlet cylinder 21 is provided with multiple sets of mounting slots 22. The waste gas treatment device 3 includes a cylinder 31, which is provided with multiple sets of mounting blocks 34 at its bottom end. The mounting blocks 34 are adapted to the mounting slots 22.

[0029] In order to quickly install the cylinder 31 in the exhaust gas treatment device 3 onto the exhaust cylinder 21 on the exhaust device 2, an installation block 34 is provided at the bottom of the cylinder 31, and an installation groove 22 is provided on the exhaust cylinder 21. The installation block 34 is installed on the installation groove 22, thereby realizing the installation of the exhaust gas treatment device 3 onto the exhaust device 2.

[0030] A first slide rail 32 is provided on the inner wall of the cylinder 31. A first ring 35 is slidably arranged on the first slide rail 32. A filter screen 36 is provided on the first ring 35. A first slider 37 is provided on the outer wall of the first ring 35. The first slider 37 is adapted to the first slide rail 32. An annular limiting block 33 is provided below the first slide rail 32.

[0031] The filter screen 36 on the first ring 35 is used to place substances that absorb harmful gases, such as activated carbon. In order to enable the first ring 35 to be quickly installed on the cylinder 31, a first slider 37 is provided on the outer wall of the first ring 35, and a first slide rail 32 is provided on the cylinder 31. When installing the first ring 35, it is only necessary to slide the first slider 37 onto the first slide rail 32. The limiting block 33 is used to limit the first ring 35.

[0032] A second ring 39 is provided on the first ring 35, and a filter screen 36 is provided on the second ring 39. A mounting hole 38 is provided on the first ring 35, and a mounting post 381 is provided at the bottom of the second ring 39. The mounting post 381 is adapted to the mounting hole 38.

[0033] To prevent large airborne particles, such as dust, from entering the device, a second ring 39 is installed on the first ring 35, and a filter screen 36 is installed on the second ring 39 to filter large airborne particles and prevent them from entering the device. The filter holes of the filter screen 36 on the second ring 39 are smaller than those of the filter screen 36 on the first ring 35. To install the second ring 39 on the first ring 35, an installation hole 38 is provided on the first ring 35. An installation post 381 is installed at the bottom of the second ring 39. By installing the installation post 381 into the installation hole 38, the second ring 39 can be quickly installed.

[0034] The fluidized bed furnace 1 is provided with a feed hopper 11 and a circular placement plate 12 is provided inside the fluidized bed furnace 1. The surface of the placement plate 12 away from the nozzle 48 is provided with a discharge hole 13 and the collection device 5 is installed below the discharge hole 13.

[0035] The discharge hole 13 is located on the surface of the placement plate 12 away from the nozzle 48. The pressurized exhaust gas ejected from the nozzle 48 can largely clean the residual material on the placement plate 12 and enter the collection device 5 through the discharge hole 13.

[0036] The collecting device 5 includes a collecting box 51, and a second slider 53 is fixedly provided at the bottom of the collecting box 51. A second slide rail 52 is provided on the bottom surface of the fluidized bed furnace 1 below the material discharge hole 13. The second slide rail 52 cooperates with the second slider 53.

[0037] The collection box 51 is fixedly provided with a second slider 53 at the bottom end, and the bottom surface of the fluidized bed furnace 1 below the discharge hole 13 is provided with a second slide rail 52. When the collection box 51 is full, it can be pulled out of the fluidized bed furnace 1 by moving the second slider 53 on the second slide rail 52. During installation, it is only necessary to push the second slider 53 along the second slide rail 52 into the inner cavity of the fluidized bed furnace 1.

[0038] A handle 54 is provided on the outer wall of the collection box 51.

[0039] The working principle of this embodiment is as follows: The material to be burned is placed on the placement plate 12 through the feed hopper 11. Gas is generated during the combustion process in the fluidized bed furnace 1. The gas pump 41 sends the gas generated in the fluidized bed furnace 1 through the gas outlet pipe 42 and the connecting pipe 44 into the gas storage tank 43 for storage. After the combustion is completed, the burned material is taken out of the fluidized bed furnace 1. The exhaust gas in the gas storage tank 43 is sent back into the fluidized bed furnace 1 through the exhaust pipe 46. The exhaust gas is pressurized by the pressure pump and the nozzle, and the material remaining on the placement plate 12 in the fluidized bed furnace 1 is blown into the collection device 5. After cleaning, the exhaust gas can be treated by the exhaust gas treatment device 3 and then discharged into the air. The above device can utilize the exhaust gas, clean the inside of the fluidized bed furnace, and reduce the waste of resources.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fluidized bed furnace with a safety protection mechanism, comprising a fluidized bed furnace (1), a gas outlet device (2), a waste gas treatment device (3), a backflushing device (4), and a collection device (5), characterized in that: The gas outlet device (2) is located at the top of the boiling furnace (1), the waste gas treatment device (3) is installed on the gas outlet device (2), the back-blowing device (4) is located on the outer wall of the boiling furnace (1), and the collection device (5) is located at the bottom of the boiling furnace (1). The backflushing device (4) includes an air pump (41), the air inlet of which is located inside the boiling furnace (1), and the air outlet of which is provided with an air outlet pipe (42). An extension plate (45) is fixedly provided on the outer wall of the boiling furnace (1) at the lower end of the air pump (41). An air storage box (43) is provided on the extension plate (45). A connecting pipe (44) is provided between the air storage box (43) and the air outlet pipe (42). An exhaust pipe (46) is provided at the lower end of the air storage box (43). The end of the exhaust pipe (46) away from the air storage box (43) extends into the boiling furnace (1). A pressurizing pump (47) is provided on the exhaust pipe (46). A nozzle (48) is connected to the port of the exhaust pipe (46) that extends into the boiling furnace (1).

2. A fluidized bed boiler with a safety protection mechanism according to claim 1, characterized in that: The gas outlet device (2) includes a gas outlet cylinder (21), which is located above the boiling furnace (1) and has multiple sets of mounting slots (22).

3. A fluidized bed boiler with a safety protection mechanism according to claim 2, characterized in that: The waste gas treatment device (3) includes a cylinder (31), and a number of mounting blocks (34) are provided at the bottom of the cylinder (31). The mounting blocks (34) are adapted to the mounting groove (22).

4. A fluidized bed boiler with a safety protection mechanism according to claim 3, characterized in that: The inner wall of the cylinder (31) is provided with a first slide rail (32), a first ring (35) is slidably provided on the first slide rail (32), a filter screen (36) is provided on the first ring (35), a first slider (37) is provided on the outer wall of the first ring (35), the first slider (37) is adapted to the first slide rail (32), and an annular limiting block (33) is provided below the first slide rail (32).

5. A fluidized bed boiler with a safety protection mechanism according to claim 4, characterized in that: A second ring (39) is provided on the first ring (35), a filter screen (36) is provided on the second ring (39), an installation hole (38) is provided on the first ring (35), and an installation post (381) is provided at the bottom of the second ring (39), the installation post (381) is adapted to the installation hole (38).

6. A fluidized bed boiler with a safety protection mechanism according to claim 1, characterized in that: The fluidized bed furnace (1) is provided with a feed hopper (11), and a circular placement plate (12) is provided inside the fluidized bed furnace (1). A discharge hole (13) is provided on the surface of the placement plate (12) away from the nozzle (48). The collection device (5) is installed below the discharge hole (13).

7. A fluidized bed boiler with a safety protection mechanism according to claim 6, characterized in that: The collecting device (5) includes a collecting box (51), and a second slider (53) is fixedly provided at the bottom of the collecting box (51). A second slide rail (52) is provided on the bottom surface of the boiling furnace (1) below the material discharge hole (13). The second slide rail (52) cooperates with the second slider (53).

8. A fluidized bed boiler with a safety protection mechanism according to claim 7, characterized in that: A handle (54) is provided on the outer wall of the collection box (51).

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