CN207049961U - A kind of efficient flue deashing device - Google Patents

Abstract

The utility model is an efficient flue dust cleaning device, which comprises a bottom frame, a transmission gear set, a driving motor, a transmission cage, a flue connecting cylinder, a dust removal scraper and an axial transmission unit; the flue connecting cylinder is fixed on the The bottom frame is embedded in the transmission cage; the transmission gear set is driving the transmission cage to roll; the axial transmission unit includes an arc-shaped gear plate, a screw transmission gear, a screw and a magnet carrier; the The screw is set on the transmission cage; the screw transmission gear is fixedly connected to one end of the screw, and the arc-shaped gear plate is fixed on the bottom frame; the dust removal scraper is placed on the flue connecting cylinder Inside: when the screw drive gear meshes with the arc-shaped gear plate, the magnet carrier drives the dust removal scraper to move axially. The utility model has a high-efficiency flue dust cleaning device with good dust removal effect, realizes no obstructions in the flue, and ensures smooth circulation of flue gas.

Description

An Efficient Flue Dust Cleaning Device

technical field

The utility model relates to the technical field of dust removal equipment, in particular to an efficient flue dust cleaning device.

Background technique

In the current enterprises, a flue is usually installed in the combustion furnace and kiln to transport the flue gas and small particle dust generated during the combustion to the dust removal equipment. However, during use, some smoke and dust will continue to adhere to the inner wall of the flue. After long-term use, if the humidity of the flue gas is high and the temperature of the flue gas is lower than the acid dew point, the ash will scale on the wall of the flue. . If these scales accumulate over the years, the flue will be blocked, which will affect the emission of flue gas and the use of the combustion furnace. In order to prevent the dust in the flue gas from depositing in the flue, it is generally required that the flue gas flow rate of the pipeline is 10-15 m/s. Due to special reasons, the flue gas flow rate must be reduced to about 7 m/s, which will inevitably cause ash to accumulate in the flue, and if the humidity of the flue gas is high and the flue temperature is lower than the acid dew point, the ash will scale on the flue wall. The flue gas working conditions are as follows: flue gas temperature: 125°C; dust concentration: 30g/Nm3. The main components of the dust are as follows: total moisture: 21%; received base ash: 14.37%; received base oxygen: 9.4%, total sulfur: 0.8%; silicon dioxide: 44.67%; calcium oxide: 11.36%; : 19.27%; ferric oxide: 7.23%.

Effective flue dust removal devices are still rare in the market at present, and the existing flue dust removal devices mainly use soot blowers. And the sootblowers are mainly steam sootblowers, sonic sootblowers and shock wave sootblowers. Currently the most widely used and most effective is the steam sootblower. However, due to the characteristics of the structure and medium, and the influence of the high temperature environment, the barrel of the soot blower is prone to jamming, failure, air leakage, etc., the equipment failure rate is relatively high, and a high level of maintenance is required. damage to the pipe wall. Due to the general effect of domestically produced soot blowers, the soot blowing effect is not obvious, and basically cannot remove the existing soot accumulation. Only when the soot blowing is used to prevent the occurrence of soot blowing opportunities, it must be manually cleaned once before soot blowing Otherwise, stubbornness cannot be eliminated, so it will be a burden on manpower. The gas pulse shock wave sootblower can only be used in the lower part of the tail flue where the temperature is relatively low due to the consideration of high-temperature flue gas and gas leakage after deflagration. Secondly, there are certain potential safety hazards. Once the unreasonable structure and production quality are involved, it is easy to cause the leakage of combustible gas and cause safety accidents.

According to the current development status and market demand, it is very necessary to study the key technology of a new flue dust cleaning device that is easy to maintain and install, cleans up thoroughly, saves human resources, and is safe.

Utility model content

In view of the technical problems existing in the background technology, the purpose of this utility model is to overcome the shortcomings of the prior art, to provide a high-efficiency flue-cleaning device that has a good dust-cleaning effect, realizes no obstructions in the flue, and ensures the smooth flow of flue gas. gray device.

In order to solve the above technical problems, the utility model adopts the following technical measures:

A high-efficiency flue dust cleaning device, comprising a chassis, a transmission gear set, a driving motor, a transmission cage, a flue connecting cylinder, a dust removal scraper and an axial transmission unit; the flue connecting cylinder is fixed on the chassis And embedded in the transmission cage; the transmission gear set drives the transmission cage to roll under the drive of the drive motor; the axial transmission unit includes an arc-shaped gear plate, a screw transmission gear, a screw and a magnet carrier The screw is arranged on the transmission cage; the screw transmission gear is fixedly connected to one end of the screw, and the arc-shaped gear plate is fixed on the bottom frame; the magnet carrier includes a carrier body and the second magnet, the carrier body is threadedly connected with the screw rod; the dust removal scraper is placed in the flue connection tube, and the dust removal scraper includes a scraper body and a first magnet; when the screw rod is driven When the gear meshes with the arc-shaped gear plate, the magnet carrier drives the dust removal scraper to move the flue connecting cylinder axially.

As a further improvement, the magnet carrier further includes a second cylindrical fixing block; the cross section of the carrier body is H-shaped; the second magnet is fixedly arranged on the carrier body, and the second magnet is close to The outer wall of the flue connecting cylinder is arranged; the four corners of the upper surface of the carrier body opposite to the outer wall of the flue connecting cylinder are inlaid with a second cylindrical fixing block.

As a further improvement, the dust removal scraper further includes a first cylindrical fixed block; the overall shape of the dust removal scraper is an isosceles trapezoid; a transverse groove is opened on the scraper body; the transverse groove is used to fix the first magnet and Several first cylindrical fixing blocks.

As a further improvement, the upper surface of the arc-shaped gear plate is a gear arc surface with an opening upward; when the screw drive gear is not meshed with the arc-shaped gear plate, the screw drive gear does not rotate The magnet carrier does not move in the axial direction of the flue connecting tube.

As a further improvement, the transmission cage includes two ring gears and several steel pipes fixed between the ring gears; the transmission cage is limited and fixed by the fixing columns on the bottom frame.

As a further improvement, a travel switch is respectively provided on two sides of the two ring gears close to the carrier body; when the magnet carrier touches the travel switch, the drive motor reverses.

As a further improvement, a guide slide is further provided between the ring gear and the flue connecting cylinder; the guide slide includes a fixed seat fixed on the outer wall of the flue connect The guide pulley on the seat; the guide pulley abuts against the inner wall of the ring gear.

As a further improvement, the transmission gear set includes a driving transmission gear, a connecting rod, and a first driven gear, a second driven gear, and a third driven gear fixed on the connecting rod; the driving transmission gear and the The driving motor is connected; the first driven gear is meshed with the driving transmission gear; the second driven gear and the third driven gear are respectively meshed with the ring gear; the connecting rod is fixed on the fixed column.

Compared with the prior art, the utility model has the following advantages:

1. An efficient flue dust cleaning device of the present utility model uses a magnet carrier to drive the dust removal scraper. The driving part is outside the flue, and only the scraper part is kept inside the flue. The driving part and the dust removal scraper interact with each other through the magnetic force of the permanent magnet. Attraction ensures that the two can be close to the pipe wall while one moves synchronously with the other, so that there is no large obstacle in the flue, and the space occupied in the flue is minimized, and the influence on the flow of flue gas is nearly It is zero, which ensures the smooth flow of flue gas in the flue, and the cleaning effect is good.

2. A high-efficiency flue dust cleaning device of the utility model uses the structure of the arc gear plate combined with the screw drive gear to realize the axial movement of the magnet carrier and the dust removal scraper, and realizes all-round dust removal on the inner wall of the flue .

3. The utility model has a high-efficiency flue dust cleaning device. The magnet carrier and the dust removal scraper are added with a cylindrical fixed block, which can effectively reduce the friction between the two and the flue connecting cylinder, making the adsorption movement more sensitive. .

4. An efficient flue dust cleaning device of the utility model installs the transmission equipment outside the flue, which is convenient for maintenance, installation, inspection, etc., easy to operate and control, and any staff can easily use it.

5. The utility model is an efficient flue dust cleaning device. The guide pulley is used as a support wheel, which plays the role of support and rolling, and changes sliding friction into rolling friction, greatly reducing friction.

Description of drawings

Accompanying drawing 1 is the structural representation of a kind of efficient flue ash cleaning device of the present utility model;

Accompanying drawing 2 is the structural representation of a kind of efficient flue ash removal device of the present utility model;

Accompanying drawing 3 is the structure schematic diagram of the magnet carrier in a kind of efficient flue dust cleaning device of the present invention;

Accompanying drawing 4 is the structure schematic diagram of the dust removal scraper in a kind of efficient flue ash cleaning device of the present utility model.

Description of main component symbols

Underframe 10, rectangular frame 11, fixed column 12,

Transmission gear set 20, driving transmission gear 21, connecting rod 22, first driven gear 23, second driven gear 24, third driven gear 25,

drive motor 30,

Transmission cage 40, ring gear 41, steel pipe 42,

Flue connecting cylinder 50, first connecting cylinder 51, second connecting cylinder 52, soot blowing pipe 53, inclined through hole 54,

Dust removal scraper 60, scraper main body 61, first magnet 62, first ball fixing block 63,

Axial transmission unit 70, arc-shaped gear plate 71, screw drive gear 72, screw rod 73, magnet carrier 74, carrier body 741, second magnet 742, second ball fixing block 743, fixing rod 75,

Guide slider 80, fixed seat 81, guide pulley 82,

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments described above are some of the embodiments of the present utility model, but not all of them. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Please refer to Figures 1 to 4. In the embodiment, a highly efficient flue dust cleaning device includes a chassis 10, a transmission gear set 20, a drive motor 30, a transmission cage 40, a flue connecting cylinder 50, a dust removal scraper 60 and a shaft To the transmission unit 70, the drive motor 30 adopts such a structure as a whole to realize the circular movement and axial movement of the dust removal scraper 60 on the flue connecting cylinder 50, which has a simple structure and easy function.

Further, the underframe 10 includes a horizontally arranged rectangular frame 11 and a fixed column 12 arranged vertically to the ground; the flue connecting cylinder 50 is fixed on the fixed column 12 and embedded in the transmission cage 40 ; The transmission gear set 20 drives the transmission cage 40 to roll under the drive of the drive motor 30; the axial transmission unit 70 includes an arc gear plate 71, a screw transmission gear 72, a screw 73 and a magnet carrier 74; The screw 73 is arranged on the transmission cage 40; the screw transmission gear 72 is fixedly connected with one end of the screw 73, and the arc gear plate 71 is fixed on the chassis 10; The tool 74 includes a carrier body 741 and a second magnet 742, and the carrier body 741 is threadedly connected with the screw rod 73; the dust removal scraper 60 is placed in the flue connecting cylinder 50, and the dust removal scraper 60 includes The scraper body 61 and the first magnet 62; when the screw drive gear 72 meshes with the arc-shaped gear plate 71, the magnet carrier 74 drives the dust removal scraper 60 to act as the axis of the flue connecting cylinder 50 upward movement.

Please refer to Fig. 2 and Fig. 3, in the embodiment, the carrier body 74 further includes several second ball fixing blocks 743; the cross section of the carrier body 741 is H-shaped; A fixing rod 75 is further pierced to assist in fixing the carrier body 741. The material of the screw rod 73 is carbon steel, and its lead is 8mm; the number of the second magnets 742 is three; The magnet 742 is fixedly arranged on the carrier main body 741, and the second magnet 742 is arranged close to the outer wall of the flue connecting cylinder 50; There are four fixing grooves, each of which is inlaid with a second cylindrical fixing block 743; the second cylindrical fixing block 743 includes a ball part and a fixing part, and adopting such a structure can effectively reduce the The frictional force between the flue connecting cylinders 50 makes the adsorption movement more sensitive.

Please refer to FIG. 1 and FIG. 4 , in the embodiment, the dust removal scraper 60 is in the shape of an isosceles trapezoid as a whole; the lower surface of the scraper body 61 has a transverse groove; the transverse groove is used to fix the first magnet 62 and There are several first cylindrical fixing blocks 63 ; the number of the first magnets 62 is three and the positions are respectively corresponding to the second magnets 742 . The material of the dust removal scraper 60 is 304 stainless steel plate. The yield limit and stress of the material are relatively good. At the same time, the dust removal scraper 60 adopts a trapezoidal shape to reduce the volume and quality of the cutter, and is more conducive to scraping dust.

Specifically, the magnet material of the first magnet 62 and the second magnet 742 is selected from the strongest NdFeB magnet among the magnets, and the specifications of the first magnet 62 and the second magnet 742 It is 50mm*30mm*10mm, then its magnet weight = (5*3*1)*7.5 (density) = 112.5g, according to the introduction of the powerful magnet encyclopedia: the magnetic force of the NdFeB magnet itself is about 640 times its own weight, and the two magnets The maximum distance apart is 20mm, so the magnetic force of the magnet is about F=300*112.5=337.5N. Therefore, according to the design, three NdFeB magnets are required on the dust removal scraper 60 or the magnet carrier 74; the total suction force is about: F=1012.5N.

In summary, the magnet carrier 74 is used to drive the dust removal scraper 60, the driving part is outside the flue, and only the scraper part is reserved inside the flue, and the driving part and the dust removal scraper 60 are attracted to each other by the magnetic force of the permanent magnet, ensuring that the two can be tightly Sticking to the pipe wall while one moves synchronously with the other, there is no large obstacle in the flue, which minimizes the space occupied in the flue, and has almost zero influence on the flow of flue gas, ensuring that the flue in the flue The smooth flow of gas, the cleaning effect is good.

Please refer to Fig. 1, in the embodiment, the upper surface of the arc-shaped gear plate 71 is a gear arc surface with the opening upward; when the screw drive gear 72 meshes with the arc-shaped gear plate 71, the magnet The carrier 74 drives the dust removal scraper 60 to move the flue connecting cylinder 50 axially; when the screw drive gear 72 does not mesh with the arc gear plate 71, the screw drive gear 72 does not rotate, that is, the magnet carrier 74 does not move in the axial direction of the flue connecting cylinder 50 . The structure of the arc-shaped gear plate 71 combined with the screw drive gear 72 is used as a whole to realize the axial movement of the magnet carrier 74 and the dust removal scraper 60, and realize the all-round cleaning of the inner wall of the flue.

Further, the time required for the dedusting scraper 60 to run for one week is estimated to be about T=20s; that is, a dedusting scraper 60 can clean an area of 0.2 square meters within 20s. If the number of scrapers is increased, the efficiency can increase proportionally. When the dust removal scraper 60 and the magnet carrier 74 run from the bottom of the flue connecting cylinder 50 to the top of the flue connecting cylinder 50 , the driving motor 30 needs to drive the transmission cage 40 to rotate. When running from the bottom of the flue connecting cylinder 50 to the bottom of the flue connecting cylinder 50, it can slide down by its own weight, so the energy consumption is also greatly reduced.

In addition, the arc-shaped gear plate 71, the screw drive gear 72 and the screw rod 73 can be omitted; the screw rod 73 is replaced by a fixed rod 75, and the fixed rod 75 is fixed on the inner side of the ring gear 41, and the The magnet carrier 74 is fixedly arranged on the fixed rod 75; at this time, the length of the dust removal scraper 60 in the axial direction of the flue connecting cylinder 50 is the same as the length of the flue connecting cylinder 50; The size of the scraper 60 replaces the axial movement of the dust removal scraper 60, making the overall structure simpler.

Please refer to FIG. 1 , in the embodiment, the transmission cage 40 includes two ring gears 41 and several steel pipes 42 fixed between the ring gears 41; The fixed column 12 is fixed in a limit to ensure that the transmission cage 40 will not slide, and the steel pipe 42 is fixedly connected to the ring gear 41 by bolts, so the overall structure is stable.

Further, the two ring gears 41 are respectively provided with a travel switch on the two sides close to the carrier body 741; when the magnet carrier 74 touches the travel switch, the drive motor 30 Inversion, specifically, after the ring gear 41 rotates several times, the magnet carrier 74 reciprocates once in the axial direction; in addition, electronic devices such as sensors can also be used instead of travel switches.

Please refer to FIG. 1 , in the embodiment, a guide slide 80 is further provided between the ring gear 41 and the flue connecting cylinder 50; The fixed seat 81 on the outer wall and the guide pulley 82 rollingly connected to the fixed seat 81 ; the guide pulley 82 abuts against the inner wall of the ring gear 41 .

Further, an annular circular groove may be formed on the inner wall of the ring gear 41 to match with the guide pulley 82 and further ensure the stability of the rotation track.

Please refer to FIG. 1, in the embodiment, the transmission gear set 20 includes a driving transmission gear 21, a connecting rod 22 and a first driven gear 23, a second driven gear 24, a third driven gear fixed on the connecting rod 22 Driven gear 25; Described driving gear 21 is connected with described driving motor 30; Described first driven gear 23 is meshed with described driving gear 21; Described second driven gear 24 and the 3rd driven gear The moving gears 25 mesh with the ring gears 41 respectively; the connecting rod 22 is fixed on the fixing post 12 . The overall adoption of such a structure can effectively change the transmission of the gear into the rotation of the ring gear 41, and the entire transmission equipment is installed outside the flue, which is convenient for maintenance, installation, inspection, etc., easy to operate and control, and any staff can easily use it.

In addition, please refer to 1. In the embodiment, the flue connecting cylinder 50 may further include a first connecting cylinder 51, a second connecting cylinder 52 and a soot blowing duct 53 arranged between the two connecting cylinders; The first connecting cylinder 51 is provided with several inclined through-holes 54 which are connected to the soot-blowing duct 53 by the inner wall of the flue connecting cylinder 50 to define the connection between the inclined through-holes 54 and the soot-blowing duct 53 The angle between the gas delivery directions is α, wherein the angle of α is 40°～50°, preferably, the value of α is 45°, and the inclined through holes 54 are arranged at equal intervals, and through the soot blowing through pipe 53 Inject high-pressure gas, and transport the ash and scale scraped off the inner wall of the flue connecting cylinder 50 by the dust removal scraper 60 to the dust collecting hopper arranged at the tail of the flue connecting cylinder 50 .

An efficient control method for a flue dust cleaning device, comprising the following steps:

S1: Turn on the power switch of the device, the drive motor 30 starts to work and drives the drive gear 21 to rotate;

S2: The driving transmission gear 21 drives the first transmission gear to rotate, the first transmission gear drives the second transmission gear and the third transmission gear to rotate and drives the transmission cage 40 to rotate, and the transmission cage 40 Drive screw mandrel drive gear 72, screw rod 73 and magnet carrier 74 to do circular motion, and now described magnet carrier 74 drives described dedusting scraper 60 to do circular motion;

S3: When the screw drive gear 72 meshes with the arc-shaped gear plate 71, the magnet carrier 74 drives the dust removal scraper 60 to move linearly in the axial direction of the flue connecting cylinder 50;

S4: When the magnet carrier 74 touches any of the travel switches, the travel switch sends an electrical signal to the controller, thereby controlling the drive motor 30 to reverse;

S5: Repeat the above steps S3-S4 until the power switch of the device is turned off.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model.

Claims (8)

1. A high-efficiency flue dust removal device, characterized in that: it includes a chassis, a transmission gear set, a drive motor, a transmission cage, a flue connecting cylinder, a dust removal scraper and an axial transmission unit; the flue connecting cylinder is fixed On the bottom frame and embedded in the transmission cage; the transmission gear set drives the transmission cage to roll under the drive of the drive motor; the axial transmission unit includes an arc gear plate, a screw transmission gear , a screw rod and a magnet carrier; the screw rod is arranged on the transmission cage; the screw drive gear is fixedly connected with one end of the screw rod, and the arc-shaped gear plate is fixed on the bottom frame; the magnet The carrier includes a carrier body and a second magnet, the carrier body is threadedly connected to the screw; the dust removal scraper includes a scraper body and a first magnet; the dust removal scraper is placed in the flue connecting cylinder; When the screw drive gear meshes with the arc-shaped gear plate, the magnet carrier drives the dust removal scraper to move the flue connecting cylinder axially. 2. The efficient flue dust cleaning device according to claim 1, characterized in that: the magnet carrier further comprises a second cylindrical fixed block; the cross section of the carrier main body is H-shaped; the second The magnet is fixedly arranged on the carrier main body, and the second magnet is arranged close to the outer wall of the flue connecting cylinder; the four corners of the upper surface of the carrier main body opposite to the outer wall of the flue connecting cylinder are each inlaid with a The second cylindrical fixed block. 3. The efficient flue dust cleaning device according to claim 2, characterized in that: the dust removal scraper further includes a first cylindrical fixed block; the dust removal scraper is in the shape of an isosceles trapezoid as a whole; A horizontal slot; the horizontal slot is used to fix the first magnet and several first cylindrical fixing blocks. 4. The high-efficiency flue dust cleaning device according to claim 1, characterized in that: the upper surface of the arc-shaped gear plate is a gear arc surface with the opening upward; when the screw drive gear and the arc-shaped When the gear plates are not meshed, the screw drive gear does not rotate, that is, the magnet carrier does not move in the axial direction of the flue connecting cylinder. 5. The efficient flue dust cleaning device according to claim 1, characterized in that: the transmission cage includes two ring gears and several steel pipes fixed between the ring gears; the transmission cage Limiting and fixing are performed through the fixing columns on the bottom frame. 6. The high-efficiency flue dust cleaning device according to claim 5, characterized in that: said two ring gears are respectively provided with a travel switch on the two sides close to said carrier body; When the tool touches the travel switch, the drive motor reverses. 7. The high-efficiency flue dust cleaning device according to claim 5, characterized in that: a guide slide is further provided between the ring gear and the flue connecting cylinder; the guide slide includes a The flue is connected to a fixed seat on the outer wall of the cylinder and a guide pulley rollingly connected to the fixed seat; the guide pulley abuts against the inner wall of the ring gear. 8. The high-efficiency flue dust cleaning device according to claim 5, characterized in that: the transmission gear set includes a driving transmission gear, a connecting rod and a first driven gear, a second driven gear fixed on the connecting rod Driven gear, the 3rd driven gear; Described driving transmission gear is connected with described driving motor; Described first driven gear is meshed with described driving transmission gear; Described 2nd driven gear and the 3rd driven gear The moving gears are respectively meshed with the ring gears; the connecting rods are fixed on the fixed posts.