Bag-type dust collector for flue gas of boiler

Abstract

The utility model relates to the technical field of flue gas dust removal, in particular to a bag-type flue gas dust remover for a boiler, which comprises a shell, a partition plate is fixedly connected onto the inner side wall of the shell and divides the inside of the shell into a flue gas treatment chamber and a dust removal chamber, a gas inlet pipe is fixedly communicated onto the side wall of the flue gas treatment chamber, and a gas outlet pipe is fixedly communicated onto the side wall of the dust removal chamber. According to the flue gas treatment device, flue gas with high-temperature large particles is treated through the gas inlet pipe, the fan, the cylinder and the conical pipe, the flue gas tangentially entering the cylinder rotates in the cylinder, and under the action of the conical pipe, the high-temperature large particles rotate along the inner wall of the conical pipe and fall into the dust collection box; high-temperature gas rotates in the center of the conical pipe, touches the bottom and reversely moves to enter the gas outlet pipe, and the gas is cooled by the cooling fins and the fan in the gas outlet pipe, so that high-temperature large flue gas particles are prevented from quickly blocking a cloth bag, the period of cleaning the cloth bag is shortened, the cloth bag is prevented from being damaged, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas dust removal, in particular to a flue gas bag dust collector for a boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. There is a large amount of smoke in the boiler flue gas, and direct emission will seriously affect the air quality.

[0003] The patent document with publication number "CN218890265U" discloses a bag dust collector, which circulates and filters the gas through a three-way air inlet pipe, effectively improving the dust removal effect on the flue gas.

[0004] However, the flue gas discharged from the boiler is a mixture, which often contains large and high-temperature flue gas particles. Some of the particles are not even extinguished and have sparks, and the temperature of the gas is also very high.

[0005] The above-mentioned bag dust collector does not have any pretreatment. Large flue gas particles will quickly clog the bags, requiring frequent cleaning of the bags. High temperature and sparks will cause the bags to age and break quickly, and even cause them to burn, thereby damaging the device and reducing its service life.

[0006] In view of the above problems, we propose a flue gas bag filter for boilers. Utility Model Content

[0007] The purpose of the utility model is to solve the defects in the prior art that the bag dust collector does not pre-treat the flue gas, large flue gas particles will quickly clog the bags, requiring frequent cleaning of the bags, high temperature and sparks will cause the bags to age and break quickly, and even cause them to burn, thereby damaging the device and reducing the service life of the device, thereby proposing a flue gas bag dust collector for boilers.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A flue gas bag dust collector for a boiler comprises a shell, an inner wall of the shell is fixedly connected to a partition, the partition divides the interior of the shell into a flue gas treatment chamber and a dust removal chamber, an air inlet pipe is fixedly connected to the side wall of the flue gas treatment chamber, a cylinder is fixedly connected to the inner wall of the flue gas treatment chamber, an end of the air inlet pipe away from the shell is connected to the cylinder, a conical pipe is fixedly connected to the lower end of the cylinder, a dust collecting box is fixedly connected to the lower end of the conical pipe, a motor is fixedly connected to the inner wall of the dust collecting box, a rotating drum is fixedly connected to the output end of the motor, an outlet pipe is fixedly connected to the side wall of one end of the cylinder away from the conical pipe, an end of the outlet pipe away from the cylinder passes through the partition, and the outlet pipe is connected to the dust removal chamber.

[0010] Preferably, a heat dissipation fin is fixedly connected to the outer surface of the air outlet pipe, a heat dissipation fan is fixedly installed on the side wall of the shell, and an air outlet is arranged on the side wall of the shell away from the heat dissipation fan.

[0011] Preferably, legs are fixedly connected to the four corners of the bottom end of the shell, and an ash discharge door is installed on the side wall of the shell.

[0012] Preferably, a plurality of holes are provided on the side wall of the rotating drum, and a handle is provided on the side wall of the ash discharge door.

[0013] Preferably, a dust inlet pipe is fixedly connected to a side wall of the dust collecting box at one end away from the motor.

[0014] Preferably, a fan and a dust bag are fixedly connected to the side walls of the dust removal chamber, respectively, and an air outlet is provided on the side walls of the dust removal chamber.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The flue gas with high temperature and large particles is processed through the air inlet pipe, fan, cylinder and conical tube. The flue gas entering the cylinder tangentially rotates in the cylinder. Under the action of the conical tube, the high temperature and large particles rotate along the inner wall of the conical tube and fall into the dust collecting box. The high temperature gas rotates in the center of the conical tube, touches the bottom and moves in the opposite direction to enter the air outlet pipe. The gas is cooled by the cooling fins and the fan in the air outlet pipe, which avoids the rapid clogging of the bag by the high temperature and large particles of flue gas, reduces the cycle of cleaning the bag, prevents the bag from being damaged, and increases the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a shell internal structure diagram of a flue gas bag filter for a boiler proposed by the utility model;

[0018] Figure 2 This is a diagram showing the internal structure of a dust collecting box of a flue gas bag filter for a boiler proposed by the utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of a flue gas bag filter for a boiler proposed by the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a cylindrical cross-section of a flue gas bag filter for a boiler.

[0021] In the figure: 1 shell, 2 partition, 3 flue gas treatment chamber, 4 dust removal chamber, 5 air inlet pipe, 6 cylinder, 7 conical pipe, 8 dust collecting box, 9 dust bag, 10 motor, 11 rotating drum, 12 air outlet pipe, 13 cooling fins, 14 cooling fan, 15 ash outlet door, 16 ash inlet pipe, 17 fan. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] Reference Figure 1-Figure 4 A flue gas bag filter for a boiler comprises a shell 1, a partition 2 is fixedly connected to the inner side wall of the shell 1, the partition 2 divides the interior of the shell 1 into a flue gas treatment chamber 3 and a dust removal chamber 4, an air inlet pipe 5 is fixedly connected to the side wall of the flue gas treatment chamber 3, a cylinder 6 is fixedly connected to the inner side wall of the flue gas treatment chamber 3, an end of the air inlet pipe 5 away from the shell 1 is connected to the cylinder 6, the air inlet pipe 5 is connected to the edge of the cylinder 6, a conical pipe 7 is fixedly connected to the lower end of the cylinder 6, a dust collecting box 8 is fixedly connected to the lower end of the conical pipe 7, a motor 10 is fixedly connected to the inner side wall of the dust collecting box 8, the motor 10 is fixedly connected to the lower end of the dust collecting box 8, four discharge ports are opened at the lower end of the dust collecting box 8, dust flows out from the discharge ports, and the output end of the motor 10 is fixedly connected to A rotating drum 11 is connected, and an exhaust pipe 12 is fixedly connected to the side wall of the end of the cylinder 6 away from the conical tube 7. The end of the exhaust pipe 12 away from the cylinder 6 passes through the partition 2, and the exhaust pipe 12 is connected to the dust removal chamber 4. The flue gas containing high-temperature large particles enters the cylinder 6 from the air inlet pipe 5, and the gas entering the cylinder 6 tangentially rotates in the cylinder 6. Under the action of the conical tube 7, the high-temperature large particles rotate along the inner wall of the conical tube 7, and fall into the rotating drum 11 in the dust collecting box 8 through the ash inlet pipe 16. The motor 10 drives the rotating drum 11 to rotate. Under the action of centrifugal force, the high-temperature large particles will collide with the wall of the rotating drum 11. The high-temperature large particles after the collision are quickly extinguished, and leave the holes of the rotating drum 11 and fall into the inner wall of the dust collecting box 8, thereby preventing the large particles of flue gas from quickly clogging the bag.

[0024] In this embodiment, as a preferred solution, a heat dissipation fin 13 is fixedly connected to the outer surface of the outlet pipe 12, a heat dissipation fan 14 is fixedly installed on the side wall of the shell 1, and an air outlet is provided on the side wall of the shell 1 away from the heat dissipation fan 14. The heat dissipation fin 13 and the heat dissipation fan 14 cool the gas to prevent the high temperature from damaging the cloth bag.

[0025] In this embodiment, as a preferred solution, legs are fixedly connected to the four corners of the bottom end of the shell 1, and an ash discharge door 15 is fixedly connected to the side wall of the shell 1 by bolts. The ash discharge door 15 can be opened by removing the bolts to clean the dust.

[0026] In this embodiment, as a preferred solution, a plurality of holes are provided on the side wall of the rotating drum 11, and holes are only provided on the side wall while the bottom is not provided. Dust will not fall onto the motor 10 from the bottom, and smoke particles can enter the dust box 8 through the holes. A handle is provided on the side wall of the ash outlet door 15, and the handle can facilitate the removal of the ash outlet door 15.

[0027] In this embodiment, as a preferred solution, an ash inlet pipe 16 is fixedly connected to the side wall of the dust box 8 at one end away from the motor 10, and the flue gas particles follow the bottom end of the conical tube 7 along the ash inlet pipe 16 into the bottom of the rotating drum 11, preventing the dust from rising and flowing back into the conical tube 7 under the action of the rotating drum 11.

[0028] In this embodiment, as a preferred solution, a fan 17 and a dust bag 9 are fixedly connected to the side walls of the dust removal chamber 4, a plurality of dust bags 9 are provided, and an air outlet is provided on the side wall of the dust removal chamber 4. The air outlet is located at the top of the dust removal chamber 4. Under the action of the fan 17, the dust-containing gas enters the device to be processed, and the dust bag 9 adsorbs the dust.

[0029] In the utility model, when in use, the smoke discharged from the boiler is connected to the air inlet pipe 5. Under the action of the fan 17, the smoke containing high-temperature large particles enters the cylinder 6 from the air inlet pipe 5. The gas tangentially entering the cylinder 6 rotates in the cylinder 6. Under the action of the conical tube 7, the high-temperature large particles rotate along the inner wall of the conical tube 7 and fall into the rotating drum 11 in the dust collecting box 8 through the ash inlet pipe 16. The motor 10 drives the rotating drum 11 to rotate. Under the action of centrifugal force, the high-temperature large particles will collide with the cylinder wall of the rotating drum 11. After the collision, the high-temperature Large particles are quickly extinguished and leave the holes in the drum 11 and fall onto the inner wall of the dust box 8, which prevents large smoke particles from quickly clogging the bag and reduces the bag cleaning cycle. The high-temperature gas rotates in the center of the conical tube 7, hits the bottom and rebounds, and then enters the outlet pipe 12. The gas is cooled by the cooling fins 13 and the cooling fan 14 in the outlet pipe 12, preventing the high temperature from damaging the bag and extending the service life of the device. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flue gas bag filter for a boiler, comprising a housing (1), characterized in that: A partition (2) is fixedly connected to the inner wall of the shell (1), and the partition (2) divides the interior of the shell (1) into a flue gas treatment chamber (3) and a dust removal chamber (4). An air intake pipe (5) is fixedly connected to the side wall of the flue gas treatment chamber (3), and a cylinder (6) is fixedly connected to the inner wall of the flue gas treatment chamber (3). An end of the air intake pipe (5) away from the shell (1) is connected to the cylinder (6), and a conical pipe is fixedly connected to the lower end of the cylinder (6). (7), a dust box (8) is fixedly connected to the lower end of the conical tube (7), a motor (10) is fixedly connected to the inner wall of the dust box (8), an output end of the motor (10) is fixedly connected to a rotating drum (11), an air outlet pipe (12) is fixedly connected to the side wall of the cylinder (6) at one end away from the conical tube (7), an end of the air outlet pipe (12) away from the cylinder (6) passes through the partition (2), and the air outlet pipe (12) is connected to the dust removal chamber (4).

2. A flue gas bag filter for a boiler according to claim 1, characterized in that: A heat dissipation fin (13) is fixedly connected to the outer surface of the air outlet pipe (12), a heat dissipation fan (14) is fixedly mounted on the side wall of the shell (1), and an air outlet is provided on the side wall of the shell (1) at one end away from the heat dissipation fan (14).

3. The flue gas bag filter for boiler according to claim 1, characterized in that: Support legs are fixedly connected at the four corners of the bottom end of the shell (1), and an ash discharge door (15) is installed on the side wall of the shell (1).

4. A flue gas bag filter for a boiler according to claim 3, characterized in that: A plurality of holes are provided on the side wall of the rotating drum (11), and a handle is provided on the side wall of the ash discharge door (15).

5. The flue gas bag filter for boiler according to claim 1, characterized in that: An ash inlet pipe (16) is fixedly connected to a side wall of the dust collecting box (8) at one end away from the motor (10).

6. The flue gas bag filter for boiler according to claim 1, characterized in that: A fan (17) and a dust removal bag (9) are respectively fixedly connected to the side walls of the dust removal chamber (4), and an air outlet is provided on the side wall of the dust removal chamber (4).

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