Air preheater capable of preventing blockage by utilizing leaked air extraction

Abstract

An air preheater capable of preventing blocking through air suction leakage comprises a machine body, a flue gas channel, a secondary air channel and a primary air channel are arranged on the machine body, two air suction leakage mechanisms are symmetrically arranged on the machine body and located between the flue gas channel and the secondary air channel and between the flue gas channel and the primary air channel respectively, and a rotor is rotationally arranged in the machine body. A first motor is arranged below the rotor, and the rotor is fixedly connected with an output shaft of the first motor. A dust collection mechanism is arranged below the second motor, and the second motor is connected with the dust collection mechanism through a third rotating shaft. The air extracting and leaking mechanism is arranged among the flue gas channel, the secondary air channel and the first-layer air channel, the dust collecting mechanism is arranged in the machine body, and the air extracting and leaking mechanism and the dust collecting mechanism are driven by the second motor, so that air extracting and leaking treatment among pipelines can be realized, the working efficiency of the air preheater is improved, and the service life of the air preheater is prolonged. And meanwhile, impurities in smoke and air can be adsorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheaters, in particular to an air preheater which utilizes leakage air extraction to prevent blockage. Background Art

[0002] The authorized public number after retrieval is CN219328110U. The air preheater includes an exhaust pipe and a grille, wherein a guide pipe is inserted in the exhaust pipe, and the grille is sleeved outside the guide pipe. The upper end of the grille is connected to a mounting plate, and two connecting plates are arranged on the mounting plate. A clamping plate is arranged on both connecting plates. The two sides of the exhaust pipe are rotatably connected to one end of the rotating plate through a torque spring, and the other ends of the two rotating plates are respectively hinged with a stop plate. Fixed plates are also arranged on both sides of the exhaust pipe, and the fixed plates are located below the rotating plates. A threaded rod is threadedly connected to the fixed plate, and the upper end of the threaded rod is rotatably connected to a U-shaped plate, and the upper end of the U-shaped plate is hinged to the rotating plate.

[0003] The device fixes the clamping plate and the grille and quickly installs and removes the grille by setting a mounting plate, a connecting plate, a clamping plate, a rotating plate, a U-shaped plate and a threaded rod. Although the device can remove and quickly install the grille, frequent disassembly is not suitable for air preheaters that work for a long time. When the equipment works for a long time, the pipeline may be blocked or leaked due to the failure to dismantle and clean the equipment in time, resulting in a decrease in the working efficiency of the air preheater, thereby affecting the normal use of the equipment. At the same time, the equipment cannot handle air leakage, and the equipment is in an air leakage state for a long time, which also reduces the working efficiency of the equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: the need to frequently dismantle the grille for cleaning. When facing situations where long-term work is required, the failure to dismantle and clean the equipment in time will cause blockage and air leakage in the pipeline, resulting in a decrease in the working efficiency of the air preheater, affecting the normal use of the equipment. At the same time, the equipment cannot handle air leakage, causing the equipment to be in an air leakage state for a long time, which will also reduce the working efficiency of the equipment. An air preheater that uses air leakage extraction to prevent blockage is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air preheater that uses air leakage to prevent blockage includes a machine body, on which a smoke channel, a secondary air channel, and a primary air channel are provided. Two air leakage mechanisms are symmetrically provided on the machine body, and the two air leakage mechanisms are respectively located between the smoke channel and the secondary air channel and the primary air channel. A rotor is rotatably provided in the machine body, a motor is provided below the rotor, and the rotor is fixedly connected to the output shaft of the motor.

[0007] The air leakage extraction mechanism comprises: an installation box 1, an exhaust fan, a rotating shaft 1, a bevel gear 1, a bevel gear 2, a rotating shaft 2, a bevel gear 3, a bevel gear 4, a rotating shaft 3, and a motor 2. The installation box 1 is fixed to the body, and a plurality of holes are provided on the side wall of the installation box 1 located outside the body. Installation cavities matching the exhaust fans are provided on the two side walls of the installation box 1, and the two exhaust fans are rotatably connected in the installation cavities respectively. The two ends of the rotating shaft 1 are respectively fixedly connected to the two exhaust fans, and the two bevel gears 1 are symmetrically fixedly connected to the rotating shaft 1. The bevel gear 2 is respectively meshed with the two bevel gears 1, and the two ends of the rotating shaft 2 are respectively fixedly connected to the bevel gear 2 and the bevel gear 3, and the rotating shaft 3 is fixedly connected to the output shaft of the motor 2. The bevel gear 4 is fixedly connected to the rotating shaft 3, and the bevel gear 4 is meshed with the bevel gear 3.

[0008] A dust suction mechanism is provided below the motor 2, and the motor 2 is connected to the dust suction mechanism via a rotating shaft 3.

[0009] Preferably, the dust suction mechanism includes: an installation box 2, a baffle, and fan blades. The installation box 2 is fixed inside the box body, and the four baffles are fixedly connected to the outer wall of the installation box 2 at equal distances. The baffle is a hollow structure, and the baffle is connected to the installation box 2. A plurality of through holes are provided on the baffle. The rotating shaft 3 rotates and penetrates the installation box 2, and the fan blades are fixedly connected to the rotating shaft 3 inside the installation box 2.

[0010] Preferably, a filter plate is provided on a side wall of the installation box having holes.

[0011] Preferably, an activated carbon plate is provided in the baffle.

[0012] Preferably, an axial seal is provided at the contact edge between the rotor and the machine body. Beneficial Effects

[0013] An air leakage extraction mechanism is arranged between the flue gas channel, the secondary air channel and the first layer air channel. The exhaust fan on one side wall of the installation box is driven by motor 2 to operate, thereby realizing air leakage extraction between the pipelines and improving the working efficiency of the air preheater. At the same time, a dust collection mechanism is arranged in the machine body, and four baffles are arranged above the rotor. By arranging fan blades in the installation box 2 and fixedly connecting them with the output shaft of motor 2, the air leakage mechanism and the dust collection mechanism are operated at the same time, so that when the flue gas and air pass through the rotor, the particulate impurities in the flue gas and the air are adsorbed, thereby avoiding the blockage of the pipeline caused by dust accumulation in the pipeline, and further improving the working efficiency of the air preheater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model discloses a structural schematic diagram of an air preheater which utilizes leakage air to prevent blockage.

[0015] Figure 2 The utility model discloses a cross-sectional structural diagram of an air preheater which utilizes leakage air extraction to prevent blockage.

[0016] Figure 3 This is a structural schematic diagram of the cross section of the air leakage extraction mechanism proposed by the utility model.

[0017] Figure 4 This is a structural schematic diagram of the cross section of the dust collection mechanism proposed by the utility model.

[0018] Figure 5 The utility model discloses a structural schematic diagram of a disassembled air preheater utilizing leakage air extraction to prevent blockage.

[0019] > In the figure: 1 body, 2 smoke channel, 3 secondary air channel, 4 primary air channel, 5 leakage air extraction mechanism, 51 installation box 1, 52 exhaust fan, 53 rotating shaft 1, 54 helical gear 1, 55 helical gear 2, 56 rotating shaft 2, 57 helical gear 3, 58 helical gear 4, 59 rotating shaft 3, 6 rotor, 7 motor 1, 8 dust collection mechanism, 81 installation box 2, 82 baffle, 83 fan blades, 9 motor 2. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 5 An air preheater utilizing air leakage to prevent blockage comprises a machine body 1, on which a smoke passage 2, a secondary air passage 3, and a primary air passage 4 are arranged, two air leakage extraction mechanisms 5 are symmetrically arranged on the machine body 1, and the two air leakage extraction mechanisms 5 are respectively located between the smoke passage 2 and the secondary air passage 3 and the primary air passage 3, a rotor 6 is rotatably arranged in the machine body 1, a motor 7 is arranged below the rotor 6, and the rotor 6 is fixedly connected to the output shaft of the motor 7;

[0022] The air leakage extraction mechanism 5 includes: an installation box 1 51, an exhaust fan 52, a rotating shaft 1 53, a bevel gear 1 54, a bevel gear 2 55, a rotating shaft 2 56, a bevel gear 3 57, a bevel gear 4 58, a rotating shaft 3 59, and a motor 2 9. The installation box 1 51 is fixed to the machine body 1. A plurality of holes are provided on the side wall of the installation box 1 51 located outside the machine body 1. Installation cavities matching the exhaust fans 52 are provided on the two side walls of the installation box 1 51, and the two exhaust fans 52 are rotatably connected to the installation cavities respectively. The two ends of the rotating shaft 1 53 are fixedly connected to the two exhaust fans 52 respectively. The two bevel gears 58 are provided on the side wall of the installation box 1 51. One 54 is symmetrically fixedly connected to the rotating shaft one 53, the bevel gear two 55 is respectively meshed with the two bevel gears one 54, the two ends of the rotating shaft two 56 are respectively fixedly connected to the bevel gear two 55 and the bevel gear three 57, the rotating shaft three 59 is fixedly connected to the output shaft of the motor two 9, the bevel gear four 58 is fixedly connected to the rotating shaft three 59, the bevel gear four 58 is meshed with the bevel gear three 57, and the motor two 9 can be driven to drive the air leakage extraction mechanism 5 to operate, and the two air leakage extraction mechanisms 5 can respectively extract the air leakage from the smoke channel 2, the secondary air channel 3, and the primary air channel 4;

[0023] A dust collecting mechanism 8 is provided below the second motor 9 , and the second motor 9 is connected to the dust collecting mechanism 8 via the third rotating shaft 59 . The driving motor 2 9 can drive the dust collecting mechanism 8 to operate via the third rotating shaft 59 .

[0024] The dust suction mechanism 8 includes: an installation box 81, a baffle 82, and a fan blade 83. The installation box 81 is fixed inside the box body 1. Four baffles 82 are fixedly connected to the outer wall of the installation box 81 at equal distances. The baffle 82 is a hollow structure, and the baffle 82 is connected to the installation box 81. A plurality of through holes are provided on the baffle 82. The rotating shaft 59 rotates and penetrates the installation box 81. The fan blade 83 is fixedly connected to the rotating shaft 59 in the installation box 81. The rotating shaft 59 can drive the fan blade 83 to rotate, thereby generating a pressure difference in the baffle 82, so that dust particles enter the baffle 82 through the through holes of the baffle 82, thereby achieving the effect of absorbing dust particles.

[0025] A filter plate is provided on the side wall of the installation box 1 51 with holes, and the leaking air can be filtered by setting the filter plate to prevent air pollution.

[0026] An activated carbon plate is provided inside the baffle 82, and by providing the activated carbon plate, dust particles can be further adsorbed.

[0027] An axial seal is provided at the contact edge between the rotor 6 and the machine body 1. The axial seal is a prior art and can effectively seal the rotor 6 and the machine body 1 to prevent smoke leakage and heat loss.

[0028] In the utility model, after the smoke passage 2, the secondary air passage 3, and the primary air passage 4 are connected, the motor 1 7 is started, the motor 1 7 drives the rotor 6 to rotate, and drives the motor 2 9 at the same time, the motor 2 9 drives the bevel gear 4 58 to rotate through the rotating shaft 3 59, the bevel gear 4 58 drives the rotating shaft 2 56 to rotate through the bevel gear 3 57, the rotating shaft 2 56 drives the bevel gear 1 54 to rotate through the bevel gear 2 55, and the bevel gear 1 54 drives the two exhaust fans 52 to rotate through the rotating shaft 1 53, so as to extract the smoke passage 2, the secondary air passage 3, and the primary air passage 4 respectively. Wind treatment, at the same time, the motor 2 9 drives the fan blade 83 to rotate through the shaft 3 59, so that a pressure difference is generated between the baffle 82 and the inside of the equipment, thereby adsorbing the dust particles scraped by the baffle 82. At the same time, an activated carbon plate is arranged inside the baffle 82, which can effectively adsorb the dust particles. The motor drives the leakage air extraction mechanism 5 and the dust collection mechanism 8 to operate simultaneously. While satisfying the leakage air extraction treatment of the equipment, the dust particles can also be adsorbed on the equipment to prevent blockage caused by long-term operation of the equipment, thereby improving the operation efficiency of the equipment.

Claims

1. An air preheater utilizing air leakage to prevent blockage, comprising a body (1), characterized in that: The machine body (1) is provided with a smoke passage (2), a secondary air passage (3), and a primary air passage (4); two air extraction mechanisms (5) are symmetrically provided on the machine body (1), and the two air extraction mechanisms (5) are respectively located between the smoke passage (2) and the secondary air passage (3) and the primary air passage (4); a rotor (6) is rotatably provided inside the machine body (1), a motor (7) is provided below the rotor (6), and the rotor (6) is fixedly connected to an output shaft of the motor (7).

2. The air preheater for preventing blockage by extracting leakage air according to claim 1 is characterized in that: The air leakage extraction mechanism (5) comprises: an installation box (51), an exhaust fan (52), a rotating shaft (53), a bevel gear (54), a bevel gear (55), a rotating shaft (56), a bevel gear (57), a bevel gear (58), a rotating shaft (59), and a motor (9); the installation box (51) is fixed to the machine body (1); a plurality of holes are provided on a side wall of the installation box (51) located outside the machine body (1); installation cavities matching the exhaust fans (52) are provided on both side walls of the installation box (51); the two exhaust fans (52) are respectively rotatably connected to the installation cavities; two ends of the rotating shaft (53) are respectively connected to two exhaust fans (52); The fan (52) is fixedly connected, the two bevel gears (54) are symmetrically fixedly connected to the rotating shaft (53), the bevel gear (55) is respectively meshed with the two bevel gears (54), the two ends of the rotating shaft (56) are respectively fixedly connected to the bevel gear (55) and the bevel gear (57), the rotating shaft (59) is fixedly connected to the output shaft of the motor (9), the bevel gear (58) is fixedly connected to the rotating shaft (59), and the bevel gear (58) is meshed with the bevel gear (57); a dust suction mechanism (8) is provided below the motor (9), and the motor (9) is connected to the dust suction mechanism (8) via the rotating shaft (59).

3. The air preheater using leakage air to prevent blockage according to claim 2, characterized in that: The dust collecting mechanism (8) comprises: a second installation box (81), a baffle (82), and a fan blade (83); the second installation box (81) is fixed inside the machine body (1); four baffles (82) are respectively and equidistantly fixedly connected to the outer wall of the second installation box (81); the baffle (82) is a hollow structure, and the baffle (82) is connected to the second installation box (81); a plurality of through holes are provided on the baffle (82); the rotating shaft (59) is rotatably arranged to penetrate the second installation box (81); and the fan blade (83) is fixedly connected to the rotating shaft (59) inside the second installation box (81).

4. The air preheater using leakage air to prevent blockage according to claim 2, characterized in that: The side wall of the installation box 1 (51) having holes is provided with a filter plate.

5. The air preheater using leakage air to prevent blockage according to claim 3, characterized in that: An activated carbon plate is arranged inside the baffle (82).

6. An air preheater using leakage air to prevent blockage according to claim 1 or 2 or 3 or 4 or 5, characterized in that: An axial seal is provided at the contact edge between the rotor (6) and the machine body (1).

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