Dust removal device of industrial furnace

Abstract

The utility model discloses a dust removal device of an industrial furnace. The dust removal device comprises an air suction cover, a lifting frame, a driving device, a telescopic hose and an air outlet pipe, the driving device is fixedly arranged on the lifting frame, and the air suction cover is located below the lifting frame. The air outlet pipe is fixedly assembled on the lifting frame, the lower end of the air outlet pipe is connected with the upper end of the telescopic hose, and the lower end of the telescopic hose is connected with the air suction cover; the driving device drives the air suction cover to ascend and descend. A hanging curtain is arranged on the lower edge of the air suction cover, and an air suction opening of the air suction cover is enclosed in the hanging curtain. The device is less in equipment investment, low in manufacturing cost, small in driving power and low in operation cost, does not occupy a production site, and does not influence production and maintenance at all; the air suction cover can move to the position above the most favorable kiln to form close air suction, the air suction effect is better, investment of dust removal equipment is saved, and a good dust removal effect can be achieved. The device is wide in application range, and all the defects of an existing dust hood are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a dust removal device for industrial furnaces and kilns. Background Art

[0002] In industrial production, various metal melting furnaces, pouring furnaces, heat treatment furnaces, etc. are used. These furnaces and kilns will all produce flue gas pollution, so it is necessary to design dust suction hoods. And lifting equipment is used in various production and maintenance links of the furnaces and kilns. Therefore, the design requirement for the dust suction hood is that it cannot interfere with lifting and should suck in as much flue gas as possible.

[0003] The condition for sucking in as much flue gas as possible is that the dust suction hood must be placed directly above the furnace and kiln and as close as possible to the smoke emission point, because the high-temperature flue gas diffuses while rising. Being close to the smoke emission point is beneficial to sucking in the flue gas with a smaller dust suction hood and a smaller dust removal air volume, achieving energy conservation and consumption reduction, and saving the investment cost and operating cost of the dust removal equipment.

[0004] However, the characteristics of furnace and kiln production do not allow a fixed dust removal hood to be set directly above the furnace and kiln. Therefore, there are two existing technologies: 1. Make the dust removal hood large enough to cover the entire furnace and kiln. Install wheel tracks under the large dust removal hood and drive it with a reduction motor.

[0005] Advantages: It can achieve the dust removal effect and does not interfere with the feeding, discharging, maintenance and repair of the furnace and kiln.

[0006] Disadvantages: a. The dust suction hood is too large in volume and heavy in weight. It takes a long time to move the dust suction hood, consumes a large amount of energy, and occupies a large area. b. The working space of the furnace and kiln operator is limited. In case of emergency, the escape space is limited.

[0007] c. A large dust removal air volume is required, the investment in dust removal equipment is large, the telescopic air duct is long and thick, which is uneconomical.

[0008] 2. Install the dust removal hood on a rotating shaft and drive it to rotate with a reduction motor.

[0009] Advantages: It can achieve the dust removal effect and does not interfere with the feeding, discharging, maintenance and repair of the furnace and kiln.

[0010] Disadvantages: a. It is only applicable to small furnace and kiln equipment and cannot be implemented for large furnaces and kilns.

[0011] b. The structure is complex, the investment is large, it is easy to malfunction and get stuck, and it requires a certain area. Summary of the Invention

[0012] Aiming at the above problems, the purpose of the utility model is to provide a dust removal device for industrial furnaces and kilns with a lifting type and a wide application range.

[0013] A dust removal device for industrial furnaces and kilns includes a suction hood, and also includes a lifting frame, a driving device, a telescopic hose, and an air outlet pipe;

[0014] The driving device is fixedly arranged on the lifting frame, and the suction hood is located below the lifting frame;

[0015] The air outlet pipe is fixedly assembled on the lifting frame. The lower end of the air outlet pipe is connected to the upper end of the telescopic hose, and the lower end of the telescopic hose is connected to the suction hood;

[0016] The driving device includes a driving motor, a speed reducer, a driving shaft, a lifting wheel, a lifting rope, and a rope winding wheel. The output end of the driving motor is connected to the input end of the speed reducer, the output end of the speed reducer is drivingly connected to the driving shaft. The driving shaft is rotatably arranged on the lifting frame. The lifting wheel is located on one side of the upper end of the telescopic hose. The rope winding wheel is assembled on the driving shaft. One end of the lifting rope is wound on the rope winding wheel, and the other end is connected to the suction hood after passing through the lifting wheel;

[0017] A hanging curtain is arranged along the lower edge of the suction hood to enclose the suction opening of the suction hood therein.

[0018] As a preferred embodiment: Two rope winding wheels are assembled on the driving shaft. Four lifting wheels and two redirecting wheels are arranged on the lifting frame. The four lifting wheels are respectively located around the upper end of the telescopic hose. One rope winding wheel corresponds to two lifting wheels;

[0019] Two of the four lifting wheels that face each other respectively redirect the lifting rope through the two redirecting wheels.

[0020] As a preferred embodiment: The suction hood is made of steel plate, with the lower opening being the suction opening and the upper opening being a circular opening for docking with the lower end of the telescopic hose.

[0021] As a preferred embodiment: The telescopic hose is made of high-temperature resistant fabric, and there are multiple steel wire rings inside the telescopic hose to form a support.

[0022] As a preferred embodiment: The lifting frame includes an upper frame, a lower platform, a safety guardrail, and a ladder. The safety guardrail is fixedly arranged between the upper frame and the lower platform. The ladder is located on one side of the lower platform. The driving device is arranged on the upper frame. An installation plate is arranged on the upper frame, and the air outlet pipe is assembled on the installation plate.

[0023] As a preferred embodiment: The lower end of the air outlet pipe adopts a flared design and is connected to the upper end of the telescopic hose.

[0024] As a preferred embodiment: A baffle with suction holes is arranged inside the suction hood, and the flue gas sucked by the suction hood enters the telescopic hose through the suction holes.

[0025] As a preferred embodiment: There are suspension points arranged outside the suction hood. At the suspension points, lifting lugs are fixedly arranged. The lifting lugs are adjustably connected to the lifting ropes through turnbuckles. The position of the suspension points is higher than the center of gravity of the suction hood.

[0026] As a preferred embodiment: The lifting lug includes a fixed connecting plate and a lifting plate. The fixed connecting plate is fixedly arranged on the outside of the suction hood. The lifting plate is fixedly arranged on the fixed connecting plate. The lifting plate forms a state of being stuck on the fixed connecting plate. The outer part of the lifting plate extends towards the outer wall of the suction hood to form a fitting or fixed arrangement.

[0027] As a preferred embodiment: A pull wire switch is installed on the lifting frame. The pull wire of the pull wire switch is connected to the suction hood; A proximity switch is installed on the lifting frame, and an induction block cooperating with the proximity switch is fixed on the lifting rope.

[0028] Adopting the above technical solutions, the utility model has the following technical effects:

[0029] 1. This device only requires a lifting frame, a driving device and a telescopic hose, with few equipment inputs, having the advantages of low cost, small driving power and low operating cost.

[0030] 2. In this device, both the lifting frame and the driving device are at a high position, that is, above the furnace equipment, without occupying the production site and not affecting production and maintenance at all.

[0031] 3. This device can drive the lifting of the suction hood. The suction hood can move to the most favorable position above the furnace to form close suction, with better suction effect, thereby reducing the suction volume accordingly, saving the investment in dust removal equipment and being able to obtain better dust removal effect.

[0032] 4. This device has a wide application range and avoids all the disadvantages of the existing dust suction hoods. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic side structure view of the utility model;

[0034] Figure 2 is Figure 1 the right view structure schematic of

[0035] Figure 3 is a schematic top view structure of the utility model;

[0036] Figure 4 is a schematic structure view of the driving device in the utility model;

[0037] Figure 5 is a schematic structure view of the telescopic hose and the suction hood in the utility model;

[0038] Figure 6 This is a schematic structural diagram of the air suction hood in the present utility model;

[0039] Figure 7 This is a schematic structural diagram of the air outlet pipe in the present utility model;

[0040] In the attached drawings, 10 is the air suction hood, 11 is the lifting frame, 12 is the driving device, 13 is the telescopic hose, 14 is the air outlet pipe, 15 is the driving motor, 16 is the reduction gear, 17 is the driving shaft, 18 is the lifting wheel, 19 is the lifting rope, 20 is the rope winding wheel, 21 is the torsion arm seat, 22 is the vertical bearing seat, 23 is the hanging curtain, 24 is the rubber hanging piece, 25 is the pressing plate, 26 is the redirecting wheel, 27 is the steel wire ring, 28 is the rope passing block, 29 is the upper frame, 30 is the lower platform, 31 is the safety guardrail, 32 is the ladder, 33 is the mounting plate, 34 is the lifting lug, 35 is the lock screw buckle, 36 is the fixed connecting plate, 37 is the lifting plate, 38 is the pull wire switch, 39 is the proximity switch, and 40 is the induction block. Specific embodiments

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the attached drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0042] Please refer to Figures 1-7 As shown, the dust removal device of this industrial furnace can be widely applied to occasions that require fixed-point dust removal and cannot completely occupy the upper space, such as the dust removal of industrial electric furnaces and the dust removal of pouring machines. The dust removal device includes an air suction hood 10, a lifting frame 11, a driving device 12, a telescopic hose 13, and an air outlet pipe 14; the air suction hood 10 is covered above the dust removal point and is used to collect dust in a certain area and guide the flow direction during dust removal; the dust collector is used to remove dust from the collected dust, provide a certain negative pressure to make the dust flow, and operate in the dust removal system; the lifting frame 11 serves as a high-position carrier, such as can be installed on the column beam of a high-position traveling crane; the driving device 12 is used to provide power for the lifting of the air suction hood 10 so that the air suction hood 10 can be lifted to the corresponding position as needed; the telescopic hose 13 is used to connect the air outlet pipe 14 and the air suction hood 10 to facilitate the telescoping during the lifting of the air suction hood 10; the air outlet pipe 14 is used to convey the dust in the air suction hood 10 and the telescopic hose 13 to the dust collector.

[0043] Among them, the driving device 12 is fixedly arranged on the lifting frame 11. The suction hood 10 is located below the lifting frame 11, and the driving device 12 provides the power for the up and down lifting of the suction hood 10 in the vertical direction; the air outlet pipe 14 is fixedly assembled on the lifting frame 11. The upper end of the air outlet pipe 14 is butted against the dust removal air pipe of the dust collector, and the lower end of the air outlet pipe 14 is connected to the upper end of the telescopic hose 13. The lower end of the telescopic hose 13 is connected to the suction hood 10. That is, the dust sucked by the suction hood 10 enters the dust collector through the telescopic hose 13 and the air outlet pipe 14 in sequence for dust removal.

[0044] Among them, the driving device 12 includes a driving motor 15, a speed reducer 16, a driving shaft 17, a lifting wheel 18, a lifting rope 19, and a rope winding wheel 20. The output end of the driving motor 15 is connected to the input end of the speed reducer 16, and the output end of the speed reducer 16 is drivingly connected to the driving shaft 17. A torsion arm seat 21 is arranged on the lifting frame 11, and a torsion arm is arranged between the driving shaft 17 and the torsion arm seat 21; the driving shaft 17 is horizontally rotatably arranged on the lifting frame 11 through a vertical bearing seat 22. The lifting wheel 18 is installed on the lifting frame and is located on one side of the upper end of the telescopic hose 13; the rope winding wheel 20 is fixedly assembled on the driving shaft 17 and rotates with the driving shaft 17; one end of the lifting rope 19 is wound on the rope winding wheel 20, and the other end is connected to the suction hood 10 after passing through the lifting wheel 18; when the driving motor 15 works, it is transmitted to the driving shaft 17 through the speed reducer 16, and the driving shaft 17 can rotate. The rope winding wheel 20 forms a winding or unwinding action on the lifting rope 19, so as to be able to drive the suction hood 10 to rise or fall, so as to change the up and down height position of the suction hood 10 to meet the needs of dust removal work.

[0045] Among them, a high-temperature resistant rubber hanging curtain 23 is arranged along the lower edge of the suction hood 10, enclosing the suction port of the suction hood 10 therein. In this way, the depth of the suction hood 10 can be increased, so that the suction hood 10 is closer to the dust removal point, enhancing the suction effect. And the setting of the hanging curtain 23 does not affect the operation of the workers on the furnace kiln equipment. The hanging curtain 23 is composed of a plurality of rubber hanging pieces 24 arranged along the edge of the lower edge of the suction hood 10. The upper end of the rubber hanging piece 24 is fixedly connected through a pressing plate 25 connected to the outer wall of the lower edge of the suction hood 10, and the lower end of the rubber hanging piece hangs downward in a suspended manner.

[0046] In some embodiments, in order to obtain the stability during the lifting process of the suction hood 10, two rope winding wheels 20 are assembled on the driving shaft 17, which are respectively located on both sides of the speed reducer 16; four lifting wheels 18 and two redirecting wheels 26 are arranged on the lifting frame 11. The four lifting wheels 18 are respectively located around the upper end of the telescopic hose 13, and one rope winding wheel 20 corresponds to two lifting wheels 18; two of the four lifting wheels 18 that face each other respectively redirect the lifting rope 19 through the two redirecting wheels 26. The rope winding wheel 20 can adopt a double-groove winding wheel to realize that one rope winding wheel 20 corresponds to two lifting wheels 18; through the separate arrangement of the four lifting wheels 18, four suspension points can be formed around the suction hood 10, so as to realize the lifting of the suction hood 10 and ensure the stability during the lifting process of the suction hood 10.

[0047] In some embodiments, the suction hood 10 is made of thin steel plates to reduce the weight of the suction hood 10. The lower opening is the suction port, and the upper opening is a round opening that forms a butt joint with the lower end of the telescopic hose 13, so as to facilitate the connection with the telescopic hose 13; a clamp can be used to connect between the telescopic hose 13 and the upper end of the suction hood 10, which is also convenient for installation and disassembly.

[0048] In some embodiments, the telescopic hose 13 is made of high-temperature resistant fabric. The telescopic hose 13 is supported by multiple steel wire rings 27 to enhance the strength of the telescopic hose 13 and avoid the situation that the telescopic hose 13 is sucked and deformed. A rope-passing block 28 is fixed outside the steel wire ring 27, and a rope-passing hole can be set on the rope-passing block 28 for the lifting rope 19 to pass through, so as to enhance the stability of the telescopic hose 13 during the lifting and lowering process of the suction hood 10 by the driving device 12.

[0049] In some embodiments, the lifting frame 11 includes an upper frame 29, a lower platform 30, a safety guardrail 31, and a ladder 32. The safety guardrail 31 is fixedly arranged between the upper frame 29 and the lower platform 30 to enclose a safe area above the lower platform 30. The ladder 32 is located on one side of the lower platform 30, and personnel can reach the lower platform 30 through the ladder 32. The driving device 12 is arranged on the upper frame 29, and a mounting plate 33 is horizontally arranged on the upper frame 29. The air outlet pipe 14 is fixedly assembled on the mounting plate 33 in a suspended manner.

[0050] In some embodiments, the lower end of the air outlet pipe 14 adopts a flared design and is connected to the upper end of the telescopic hose 13; the flared design facilitates the insertion of the telescopic hose 13 into the air outlet pipe 14, and a clamp can be used to form a fixed connection between the air outlet pipe 14 and the telescopic hose 13.

[0051] In some embodiments, a baffle with air suction holes is provided inside the air suction hood 10, and the flue gas suctioned by the air suction hood 10 enters the telescopic hose 13 through the air suction holes; through the arrangement of the baffle, high-temperature particles can be prevented from being sucked into the telescopic hose 13, forming a certain protection for the telescopic hose 13. The baffle can be assembled in the air suction hood 10 by screws, which is convenient for installation and disassembly.

[0052] In some embodiments, suspension points are provided outside the air suction hood 10, and lifting lugs 34 are fixedly arranged at the suspension points. The lifting lugs are adjustably connected to the lifting rope 19 through a locking screw buckle 35. The height of the air suction hood 10 can be adjusted through the locking screw buckle 35, so that the whole air suction hood 10 is in a stable state; the position of the suspension point is higher than the center of gravity of the air suction hood 10, achieving the effect of stable lifting without tipping over.

[0053] In some embodiments, the lifting lug 34 includes a fixed connecting plate 36 and a lifting plate 37. The fixed connecting plate 36 is fixedly arranged on the outside of the air suction hood 10, and the lifting plate 37 is fixedly arranged on the fixed connecting plate 36. The lifting plate 37 is in a state of being stuck on the fixed connecting plate 36, and the outer side part of the lifting plate 37 extends towards the outer wall of the air suction hood 10 to form a fitting or fixed setting, so as to increase the connection stability between the lifting lug and the air suction hood 10.

[0054] In some embodiments, the air suction hood 10 needs to be lowered to a suitable position to ensure the best air suction effect, and at the same time, it should not interfere with the production operation of workers. If an operation error occurs when lowering the air suction hood 10, it may exceed the allowable lowering height of the equipment, thereby damaging the equipment and causing accidents. Therefore, a limit device needs to be installed to prevent unlimited lowering. Similarly, when operating the air suction hood 10 to rise, it cannot rise infinitely beyond the allowable rising height of the equipment, which will also damage the equipment and cause accidents. A pull wire switch 38 is installed on the lifting frame 11, and the pull wire of the pull wire switch 38 is connected to the air suction hood 10. When the air suction hood 10 descends beyond the limit value, the pull wire switch 38 will be pulled, thereby triggering the power-off of the electric control system to play a protective role; a proximity switch 39 is installed on the lifting frame 11, and an induction block 40 cooperating with the proximity switch 39 is fixed on a lifting rope 19 close to the proximity switch 39. When the air suction hood 10 rises to the limit height and the proximity switch 38 senses the induction block 40, the power-off of the electric control system is triggered to play a protective role. Thus, the up and down lifting positions of the air suction hood 10 can be limited, playing a role in lifting protection.

[0055] Finally, it should be noted that the above embodiments are only preferred embodiments of the present utility model to illustrate the technical solutions of the present utility model, rather than limiting it, let alone limiting the patent scope of the present utility model; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model; in addition, directly or indirectly applying the technical solutions of the present utility model to other related technical fields shall similarly be included within the scope of the patent protection of the present utility model.

Claims

1. A dust removal device for an industrial furnace, comprising an air suction hood, characterized in that, It also includes a lifting frame, a driving device, a telescopic hose, and an air outlet pipe; The driving device is fixedly arranged on the lifting frame, and the suction hood is located below the frame; The air outlet pipe is fixedly assembled on the lifting frame. The lower end of the air outlet pipe is connected to the upper end of the telescopic hose, and the lower end of the telescopic hose is connected to the suction hood; The driving device includes a driving motor, a speed reducer, a driving shaft, a lifting wheel, a lifting rope, and a rope winding wheel. The output end of the driving motor is connected to the input end of the speed reducer, and the output end of the speed reducer is drivingly connected to the driving shaft. The driving shaft is rotatably arranged on the lifting frame. The lifting wheel is located on one side of the upper end of the telescopic hose. The rope winding wheel is assembled on the driving shaft. One end of the lifting rope is wound on the rope winding wheel, and the other end is connected to the suction hood after passing through the lifting wheel; A hanging curtain is arranged at the lower edge of the suction hood to enclose the suction port of the suction hood therein.

2. The dust removal device for an industrial furnace as claimed in claim 1, wherein Two rope winding wheels are assembled on the driving shaft. Four lifting wheels and two redirecting wheels are arranged on the lifting frame. The four lifting wheels are respectively located around the upper end of the telescopic hose. One rope winding wheel corresponds to two lifting wheels; Two of the four lifting wheels that face each other respectively redirect the lifting rope through the two redirecting wheels.

3. The dust removal device for an industrial furnace as described in claim 1, wherein The suction hood is made of steel plate. The lower opening is the suction port, and the upper opening is a circular opening that forms a butt joint with the lower end of the telescopic hose.

4. The dust removal device for an industrial furnace as described in claim 1, characterized in that, The telescopic hose is made of high-temperature resistant fabric and is supported by multiple steel wire rings.

5. The dust removal device for an industrial furnace as described in claim 1, characterized in that, The lifting frame includes an upper frame, a lower platform, a safety guardrail, and a ladder. The safety guardrail is fixedly arranged between the upper frame and the lower platform. The ladder is located on one side of the lower platform. The driving device is arranged on the upper frame. An installation plate is arranged on the upper frame, and the air outlet pipe is assembled on the installation plate.

6. The dust removal device for an industrial furnace as described in claim 1, wherein The lower end of the air outlet pipe adopts a flared design and is connected to the upper end of the telescopic hose.

7. The dust removal device for an industrial furnace as described in claim 1, wherein, A baffle with suction holes is arranged inside the suction hood, and the flue gas sucked by the suction hood enters the telescopic hose through the suction holes.

8. The dust removal device for an industrial furnace as described in claim 1, wherein Suspension points are arranged outside the suction hood. Lifting lugs are fixedly arranged at the suspension points. The lifting lugs are adjustably connected to the lifting rope through a locking screw buckle. The position of the suspension points is higher than the center of gravity position of the suction hood.

9. The dust removal device for an industrial furnace as described in claim 1, characterized in that, The lifting lug includes a fixed connecting plate and a lifting plate. The fixed connecting plate is fixedly arranged on the outside of the suction hood. The lifting plate is fixedly arranged on the fixed connecting plate. The lifting plate is in a state of being stuck on the fixed connecting plate. The outer part of the lifting plate extends towards the outer wall of the suction hood to form a fit or fixed setting.

10. The dust removal device for an industrial furnace as described in claim 1, characterized in that, A pull switch is installed on the lifting frame, and the pull wire of the pull switch is connected to the suction hood; A proximity switch is installed on the lifting frame, and an induction block cooperating with the proximity switch is fixed on the lifting rope.

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