A main exhaust fan for preventing dust adhesion in sintering machine of iron smelting plant

Abstract

The present invention relates to the technical field of sintering machine equipment, and proposes a main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant, comprising a casing, an impeller arranged in the casing, and a dust cleaning device, the dust cleaning device comprising a protective tube, a dust cleaning pipe, and a high-frequency sound wave generator, the protective tube is fixedly arranged in the casing, and a side hole is arranged on the side wall located at the impeller, the dust cleaning pipe is connected to the high-frequency sound wave generator, and both are located in the protective tube, the outlet of the high-frequency sound wave generator is located at the side hole, the dust cleaning pipe and the high-frequency sound wave generator have the freedom to rotate in the protective tube and move along the length direction of the protective tube. Through the above technical scheme, the problem of dust adhering to the leeward side of the impeller of the main exhaust fan of the sintering machine in the prior art after long-term use, affecting the normal operation of the main exhaust fan, and the machine must be shut down for dust cleaning is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering machine equipment, and in particular to a main exhaust fan for preventing dust adhesion in a sintering machine of an ironmaking plant. Background Art

[0002] The sintering system mainly includes sintering trolley, mixer, main exhaust fan, ring cooler and other equipment. The oxygen required for the sintering process is provided by the main exhaust fan. The main exhaust fan impeller is affected by the concentration, humidity, temperature and other factors of the dust-containing medium inside the fan and the uneven flow field inside the impeller, which makes it easy for dust to adhere to some leeward sides of the impeller. A large amount of dust adhesion will increase the weight of the impeller and the moment of inertia, which will reduce the efficiency of the fan and increase the power consumption of the motor. If the accumulated dust falls off, it will destroy the dynamic balance of the impeller, causing the fan to vibrate more, and even worse, forcing the fan to shut down due to failure. The fan must stop working every time the dust is cleaned, which has low cleaning efficiency and affects the system output. Summary of the invention

[0003] The present invention proposes a main exhaust fan for a sintering machine in an ironmaking plant to prevent dust adhesion, which solves the problem in the prior art that dust adheres to the leeward side of the main exhaust fan impeller of the sintering machine after long-term use, affecting the normal operation of the main exhaust fan and requiring the machine to be shut down for dust cleaning.

[0004] The technical solution of the present invention is as follows:

[0005] A main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant comprises a casing, an impeller arranged in the casing and a ash cleaning device, the ash cleaning device comprises a protection tube, a ash cleaning pipe and a high-frequency sound wave generator, the protection tube is fixedly arranged in the casing, and a side hole is provided on the side wall located at the impeller, the ash cleaning pipe is connected to the high-frequency sound wave generator, and both are located in the protection tube, the outlet of the high-frequency sound wave generator is located at the side hole, and the ash cleaning pipe and the high-frequency sound wave generator have the freedom to rotate in the protection tube and move along the length direction of the protection tube.

[0006] Furthermore, the cleaning device also includes a locking mechanism, which is arranged between the protective tube and the cleaning tube. The locking mechanism includes a stop plate, a pressure plate and an elastic clamping member. The stop plate is fixedly arranged on the inner wall of the protective tube, and the pressure plate is slidably arranged in the protective tube along the length direction of the protective tube. A through hole for the cleaning tube to pass through is arranged between the stop plate and the pressure plate. The elastic clamping member is arranged between the pressure plate and the stop plate, and the cleaning tube is slidably locked by means of the pressure plate.

[0007] Furthermore, the elastic clamping member includes an inner pressure member and an outer pressure member, and the locking mechanism also includes a telescopic chain. There are multiple telescopic chains, and the multiple telescopic chains are arranged circumferentially. The two ends of the telescopic chain are respectively connected to the stop plate and the pressure plate. The telescopic chain is formed by connecting multiple hinged rod groups in sequence. The hinged rod group includes two rotating rods hinged in the middle, and the ends of the rotating rods of two adjacent hinged rod groups are hinged. The multiple rotating rods form multiple diamond frames, and the two relative corners of the diamond frames are located on two different circumferences, and an inner pressure member is provided on the inner side and an outer pressure member is provided on the outer side.

[0008] Furthermore, the cleaning device also includes a control mechanism, which includes a driving screw and a driving slide. The driving screw is rotatably arranged in the protective tube, and the driving screw is provided with a through hole for the cleaning tube to pass through. The driving slide is slidably arranged in the protective tube, and the driving slide is threadedly connected to the driving screw, and the driving slide is connected to the pressure plate.

[0009] Furthermore, there are multiple locking mechanisms, and the multiple locking mechanisms are arranged along the length direction of the protective tube. The control mechanism also includes a synchronization rod, which passes through the pressure plates and stop plates of the multiple locking mechanisms, and the synchronization rod is fixed to the pressure plate and slidably arranged with the stop plate.

[0010] Furthermore, the articulated rod group further includes a fixed shaft, the two rotating rods are both rotatably disposed on the fixed shaft, and the synchronization rod passes through the fixed shaft.

[0011] Furthermore, the driving slide comprises a first slide plate, a second slide plate and a connecting rod connecting the two, the first slide plate is threadedly connected to the driving screw rod, and the second slide plate is fixedly connected to the pressure plate.

[0012] Furthermore, the control mechanism also includes a knob, which is arranged at the end of the protection tube and fixedly connected to the driving screw.

[0013] Furthermore, it also includes an adjuster, which is arranged on the ash cleaning pipe and is used to adjust the position and angle of the ash cleaning pipe.

[0014] The working principle and beneficial effects of the present invention are:

[0015] A main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant is provided. A dust cleaning device is added to the main exhaust fan to achieve the effect of online cleaning of dust adhered to the impeller, and dust accumulation on the impeller can be cleaned without stopping the machine. The dust cleaning device includes a protective tube, a dust cleaning tube and a high-frequency sound wave generator, wherein the dust cleaning tube is connected to the high-frequency sound wave generator, and high-frequency sound waves are generated by conveying high-pressure gas into the dust cleaning tube and acting on the high-frequency sound wave generator. The high-frequency sound waves are emitted from the outlet of the high-frequency sound wave generator, thereby cleaning the dust accumulated on the impeller blades. The protective tube plays the role of protecting the dust cleaning tube and the high-frequency sound wave generator. Side holes are provided on the side wall of the dust cleaning tube close to the impeller. The dust cleaning tube and the high-frequency sound wave generator can move and rotate freely inside the protective tube. The outlet position of the high-frequency sound wave generator is adjusted so that the high-frequency sound waves emitted by the high-frequency sound wave generator are emitted in a directionally manner, facing the position where dust cleaning is required, thereby improving the dust cleaning effect. A cleaning device is set up to use high-frequency sound waves for cleaning without damaging the impeller. The non-contact cleaning realizes the function of cleaning the impeller of the main exhaust fan without stopping the machine, solving the problem of dust accumulation on the impeller. It can effectively increase the impeller efficiency and reduce the power consumption of the motor, while avoiding the problem of increased fan vibration caused by the shedding of accumulated dust, and also solves the problem that the system cannot be shut down for processing due to production reasons. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention (the main exhaust fan structure is not fully shown);

[0018] Figure 2 It is a schematic diagram of the locking mechanism structure;

[0019] Figure 3 for Figure 1 A partial enlarged schematic diagram in the middle;

[0020] Figure 4 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0021] In the figure: 1, casing, 2, impeller, 3, protection tube, 31, side hole, 4, cleaning tube, 5, high-frequency sound wave generator, 6, locking mechanism, 61, stop plate, 62, pressure plate, 63, telescopic chain, 631, rotating rod, 632, fixed shaft, 64, internal pressure piece, 65, external pressure piece, 7, control mechanism, 71, driving screw, 72, first slide plate, 73, second slide plate, 74, connecting rod, 75, synchronization rod, 76, knob, 8, regulator. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 to Figure 4 As shown, this embodiment proposes

[0024] A main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant comprises a casing 1, an impeller 2 arranged on the casing 1 and a dust cleaning device, the dust cleaning device comprising a protection tube 3, a dust cleaning tube 4 and a high-frequency sound wave generator 5, the protection tube 3 is fixedly arranged in the casing 1, and a side hole 31 is provided on the side wall located at the impeller 2, the dust cleaning tube 4 is connected to the high-frequency sound wave generator 5, and both are located in the protection tube 3, the outlet of the high-frequency sound wave generator 5 is located at the side hole 31, and the dust cleaning tube 4 and the high-frequency sound wave generator 5 have the freedom to rotate in the protection tube 3 and move along the length direction of the protection tube 3.

[0025] The dust adhering to the impeller 2 can be cleaned online by adding a dust cleaning device to the main exhaust fan, and the dust accumulated on the impeller 2 can be cleaned without stopping the machine. The dust cleaning device includes a protective tube 3, a dust cleaning tube 4 and a high-frequency sound wave generator 5, wherein the dust cleaning tube 4 is connected to the high-frequency sound wave generator 5, and high-frequency sound waves are generated by conveying high-pressure gas into the dust cleaning tube 4 and acting on the high-frequency sound wave generator 5. The high-frequency sound waves are emitted from the outlet of the high-frequency sound wave generator 5, thereby cleaning the dust accumulated on the blades of the impeller 2. The protective tube 3 plays a role in protecting the dust cleaning tube 4 and the high-frequency sound wave generator 5. A side hole 31 is provided on the side wall of the dust cleaning tube 4 close to the impeller 2. The dust cleaning tube 4 and the high-frequency sound wave generator 5 can move and rotate freely inside the protective tube 3. The outlet position of the high-frequency sound wave generator 5 is adjusted so that the high-frequency sound waves emitted by the high-frequency sound wave generator 5 are emitted in a direction, facing the position where dust cleaning is required, thereby improving the dust cleaning effect. A dust cleaning device is provided to utilize high-frequency sound waves for dust cleaning without damaging the impeller 2. The non-contact dust cleaning realizes the function of cleaning the impeller 2 of the main exhaust fan without stopping the machine, thereby solving the problem of dust accumulation on the impeller 2. It can effectively increase the efficiency of the impeller 2 and reduce the power consumption of the motor, while avoiding the problem of increased fan vibration caused by the shedding of accumulated dust, and also solves the problem that the system cannot be shut down for processing due to production reasons.

[0026] The cleaning device also includes a locking mechanism 6, which is arranged between the protective tube 3 and the cleaning tube 4. The locking mechanism 6 includes a stop plate 61, a pressure plate 62 and an elastic clamping member. The stop plate 61 is fixedly arranged on the inner wall of the protective tube 3, and the pressure plate 62 is slidably arranged in the protective tube 3 along the length direction of the protective tube 3. There are through holes between the stop plate 61 and the pressure plate 62 for the cleaning tube 4 to pass through. The elastic clamping member is arranged between the pressure plate 62 and the stop plate 61, and the cleaning tube 4 is slidably locked by the pressure plate 62.

[0027] In the present embodiment, the function of clamping the cleaning tube 4 is realized by utilizing a fixed stop plate 61, a slidable pressure plate 62 and an elastic clamping member arranged therebetween. The pressure plate 62 is moved to reduce the distance between the pressure plate 62 and the clamping member, and the elastic clamping member is compressed so that the elastic clamping member is tightly pressed against the outer wall of the cleaning tube 4 and the inner wall of the protective tube 3, thereby locking the relative positions of the cleaning tube 4 and the protective tube 3. In this way, when the main exhaust fan is working, the position of the cleaning tube 4 will not move due to the flow field fluctuation inside the casing 1, thereby affecting the cleaning effect.

[0028] The elastic clamping part includes an inner pressure part 64 and an outer pressure part 65. The locking mechanism 6 also includes a telescopic chain 63. There are multiple telescopic chains 63, and the multiple telescopic chains 63 are arranged circumferentially. The two ends of the telescopic chain 63 are respectively connected to the stop plate 61 and the pressure plate 62. The telescopic chain 63 is formed by connecting multiple hinged rod groups in sequence. The hinged rod group includes two rotating rods 631 hinged in the middle. The ends of the rotating rods 631 of two adjacent hinged rod groups are hinged. The multiple rotating rods 631 form multiple rhombus frames. The two relative corners of the rhombus frame are located on two different circumferences, and the inner pressure part 64 is provided on the inner side and the outer pressure part 65 is provided on the outer side.

[0029] The pressure plate 62 and the stop plate 61 are connected by multiple telescopic chains 63 arranged in a circle. The telescopic chains 63 are scissor-type structures formed by hinged multiple rotating rods 631 to form multiple rhombus frames. The angles of the rhombus frames formed by hinged ends of the rotating rods 631 are respectively located at the inner and outer circles of the protective tube 3, and internal pressure pieces 64 and external pressure pieces 65 are respectively arranged on them. In this way, when the distance between the pressure plate 62 and the stop plate 61 is reduced, the rhombus frames will cause the internal pressure piece 64 to press on the cleaning tube 4 and the external pressure piece 65 to press on the protective tube 3. At the same time, with the elasticity of the internal pressure piece 64 and the external pressure piece 65, a more stable fixation of the cleaning tube 4 can be achieved.

[0030] The cleaning device also includes a control mechanism 7, which includes a driving screw 71 and a driving slide. The driving screw 71 is rotatably arranged in the protective tube 3, and the driving screw 71 is provided with a through hole for the cleaning tube 4 to pass through. The driving slide is slidably arranged in the protective tube 3, and the driving slide is threadedly connected to the driving screw 71, and the driving slide is connected to the pressure plate 62.

[0031] A nut-screw structure formed by a driving screw 71 and a driving slide is used as a control mechanism 7, wherein the driving slide is connected to a sliding block. The driving screw 71 is rotated to drive the driving slide to move in the protective tube 3, thereby driving the pressure plate 62 to slide, thereby realizing the locking and unlocking functions of the locking mechanism 6. At the same time, the structural characteristics of the nut-screw can be used to ensure stability during locking.

[0032] There are multiple locking mechanisms 6, and the multiple locking mechanisms 6 are arranged along the length direction of the protective tube 3. The control mechanism 7 also includes a synchronization rod 75, which penetrates the pressure plates 62 and the stop plates 61 of the multiple locking mechanisms 6, and the synchronization rod 75 is fixed to the pressure plate 62 and slidably arranged with the stop plate 61.

[0033] In order to ensure the stability of the cleaning pipe 4 during operation, multiple locking mechanisms 6 are arranged in the length direction of the protective tube 3. In this way, multiple locking mechanisms 6 can be locked and clamped at the same time to make the fixation of the cleaning pipe 4 more stable. Multiple clamping mechanisms are synchronously driven through a synchronization rod 75. The synchronization rod 75 is fixed to the pressure plate 62 of each clamping mechanism and slides with the stop plate 61. In this way, when the control mechanism 7 drives the pressure plate 62 of one of the clamping mechanisms to move, it can also drive the pressure plates 62 of all the clamping mechanisms to move at the same time to achieve locking or unlocking, thereby achieving synchronous control.

[0034] The articulated rod assembly further includes a fixed shaft 632 , and the two rotating rods 631 are both rotatably disposed on the fixed shaft 632 , and the synchronization rod 75 passes through the fixed shaft 632 .

[0035] The synchronization rod 75 is used to pass through multiple fixed shafts 632 to limit the rotation of the fixed shafts 632. The rotation of the two rotating rods 631 relative to the fixed shafts 632 will not affect the telescopic function of the telescopic chain 63. At the same time, setting the synchronization rod 75 in this way can enhance the stability of the telescopic chain 63 and will not affect the clamping work of the internal pressure piece 64 and the external pressure piece 65.

[0036] The driving slide includes a first slide 72, a second slide 73 and a connecting rod 74 connecting the first slide 72 and the driving screw 71, and the second slide 73 is fixedly connected to the pressing plate 62. This arrangement can leave a mounting position for the driving screw 71, so that the driving screw 71 can be rotated to drive the pressing plate 62 to move.

[0037] The control mechanism 7 further includes a knob 76, which is disposed at the end of the protection tube 3 and fixedly connected to the driving screw 71. The locking mechanism 6 can be locked or unlocked by turning the knob 76, which is convenient to use.

[0038] It also includes an adjuster 8 , which is arranged on the ash cleaning pipe 4 and is used to adjust the position and angle of the ash cleaning pipe 4 .

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant, comprising a casing (1), an impeller (2) arranged in the casing (1), and a dust cleaning device, It is characterized in that The ash cleaning device comprises a protection tube (3), an ash cleaning tube (4) and a high-frequency sound wave generator (5); the protection tube (3) is fixedly arranged in the casing (1), and a side hole (31) is provided on the side wall located at the impeller (2); the ash cleaning tube (4) is connected to the high-frequency sound wave generator (5), and both are located in the protection tube (3); the outlet of the high-frequency sound wave generator (5) is located at the side hole (31); the ash cleaning tube (4) and the high-frequency sound wave generator (5) have the freedom to rotate in the protection tube (3) and to move along the length direction of the protection tube (3); The cleaning device further comprises a locking mechanism (6), wherein the locking mechanism (6) is arranged between the protection tube (3) and the cleaning tube (4), and the locking mechanism (6) comprises a stop plate (61), a pressure plate (62) and an elastic clamping member, wherein the stop plate (61) is fixedly arranged on the inner wall of the protection tube (3), the pressure plate (62) is slidably arranged in the protection tube (3) along the length direction of the protection tube (3), and a through hole for the cleaning tube (4) to pass through is arranged between the stop plate (61) and the pressure plate (62), and the elastic clamping member is arranged between the pressure plate (62) and the stop plate (61), and the cleaning tube (4) is slidably locked by means of the pressure plate (62); The dust cleaning device further comprises a control mechanism (7), wherein the control mechanism (7) comprises a driving screw (71) and a driving slide, wherein the driving screw (71) is rotatably arranged in the protective tube (3), and the driving screw (71) is provided with a through hole for the dust cleaning tube (4) to pass through, and the driving slide is slidably arranged in the protective tube (3), and the driving slide is threadedly connected to the driving screw (71), and the driving slide is connected to the pressure plate (62).

2. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 1, It is characterized in that The elastic clamping member comprises an inner pressure member (64) and an outer pressure member (65); the locking mechanism (6) further comprises a telescopic chain (63); the telescopic chain (63) is in plurality and the plurality of telescopic chains (63) are arranged circumferentially; the two ends of the telescopic chain (63) are respectively connected to the stop plate (61) and the pressure plate (62); the telescopic chain (63) is formed by connecting a plurality of hinged rod groups in sequence; the hinged rod group comprises two rotating rods (631) hinged in the middle; the ends of the rotating rods (631) of two adjacent hinged rod groups are hinged; the plurality of rotating rods (631) form a plurality of rhombus frames; the two relative corners of the rhombus frames are located on two different circumferences; the inner pressure member (64) is provided on the inner side and the outer pressure member (65) is provided on the outer side.

3. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 2, It is characterized in that There are a plurality of locking mechanisms (6), and the plurality of locking mechanisms (6) are arranged along the length direction of the protective tube (3). The control mechanism (7) further comprises a synchronization rod (75), and the synchronization rod (75) penetrates the pressure plates (62) and the stop plates (61) of the plurality of locking mechanisms (6). The synchronization rod (75) is fixedly arranged with the pressure plates (62) and slidably arranged with the stop plates (61).

4. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 3, It is characterized in that The hinged rod group also includes a fixed shaft (632), the two rotating rods (631) are both rotatably arranged on the fixed shaft (632), and the synchronization rod (75) passes through the fixed shaft (632).

5. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 1, It is characterized in that The driving slide comprises a first slide plate (72), a second slide plate (73) and a connecting rod (74) connecting the first slide plate (72) and the driving screw rod (71) by threading, and the second slide plate (73) is fixedly connected to the pressing plate (62).

6. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 1, It is characterized in that The control mechanism (7) further comprises a knob (76), wherein the knob (76) is arranged at the end of the protection tube (3) and is fixedly connected to the driving screw (71).

7. The main exhaust fan for preventing dust adhesion for a sintering machine in an ironmaking plant according to claim 1, It is characterized in that It also comprises an adjuster (8), which is arranged on the ash cleaning pipe (4) and is used to adjust the position and angle of the ash cleaning pipe (4).

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