A pulse dust removal device and a method for treating mill scale

Abstract

The present disclosure relates to the technical field of dust removal equipment. An embodiment of the present disclosure provides a pulse dust removal equipment and an oxidized iron scale treatment method, which includes a shell having a filter space, a filter bag arranged in the filter space, and a fixing plate arranged in the filter space, the fixing plate having a mounting hole; a fixing ring arranged in the mounting hole, the fixing ring being used to fix the bag mouth of the filter bag; a plurality of support rods, the plurality of support rods being distributed along the circumference of the axis of the fixing ring, the support rod having a hinged portion, a toggle portion and a connecting portion, the toggle portion and the connecting portion being respectively located on opposite sides of the hinged portion, the hinged portion being ball-hinged with the fixing ring, the connecting portion being used to connect the bag body of the filter bag; a rotating member being rotatably arranged on the fixing ring, the rotating member being used to toggle the toggle portion in sequence. The above technical scheme solves the technical problem that the prior art method of knocking the filter bag easily causes damage to the filter bag.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of dust removal equipment, and in particular, to a pulse dust removal equipment and an iron oxide scale treatment method. Background Art

[0002] During steel forging and hot rolling, a large amount of iron oxide scale is often formed due to the reaction between steel and oxygen in the air, resulting in accumulation and waste of resources. If these resources are used rationally, production costs can be reduced, and environmental protection and energy saving can also be achieved. The treatment process of iron oxide scale involves drying, magnetic separation, screening, crushing, and transportation. A large amount of dust will be generated during the crushing process of iron oxide scale, posing a threat to the environment and the health of operators.

[0003] In the prior art, a filter bag pulse dust removal device is used to remove the large amount of iron oxide dust generated during the crushing process. In actual use, the dust is also composed of small particles of iron oxide, which can also be collected and utilized. However, it is easy to cause secondary dust when the dust is taken out from the collection box of the pulse dust removal device. In addition, the crushing of iron oxide is a continuous production process. Although the filter bags in the filter bag pulse dust removal device can be back-blown and cleaned by pulses, simple back-blowing cleaning cannot completely clean the dust attached to the filter bags. Although some equipment uses knocking or shaking of the filter bags to improve the cleaning efficiency of the filter bags and reduce the replacement frequency of the filter bags, there is a problem that the filter bags are easily damaged. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the embodiments of the present disclosure provide a pulse dust removal device and an iron oxide scale treatment method, which solves the technical problem in the prior art that the method of beating the filter bag easily leads to damage to the filter bag and waste of iron oxide scale.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a pulse dust removal device, including: a housing, the housing having a filter space, a filter bag arranged in the filter space, and further including:

[0006] A fixing plate, arranged in the filtering space, the fixing plate having a mounting hole;

[0007] A fixing ring, arranged in the mounting hole, and used for fixing the bag opening of the filter bag;

[0008] A plurality of support rods are distributed along the circumference of the axis of the fixing ring. The support rod has a hinge portion, a toggle portion and a connection portion. The toggle portion and the connection portion are respectively located on two opposite sides of the hinge portion. The hinge portion is ball-hinged with the fixing ring. The connection portion is used to connect the bag body of the filter bag.

[0009] A rotating member is rotatably arranged on the fixing ring, and the rotating member is used to sequentially move the moving parts.

[0010] For example, at least one embodiment of the present disclosure provides a pulse dust removal device, which further includes:

[0011] A first rotating rod, rotatably disposed on the fixing ring, wherein a rotation axis of the first rotating rod coincides with an axis of the fixing ring, and the rotating member is rotatably disposed on the fixing ring via the first rotating rod;

[0012] a second rotating rod, rotatably disposed on the fixing ring, wherein a rotation axis of the second rotating rod is perpendicular to a rotation axis of the first rotating rod;

[0013] A first bevel gear, disposed on the first rotating rod;

[0014] A second bevel gear, disposed on the second rotating rod, the second bevel gear being transmission-connected to the first bevel gear;

[0015] The wind wheel is arranged on the second rotating rod, and the pulse mechanism is used to drive the wind wheel to rotate.

[0016] For example, in a pulse dust removal device provided in at least one embodiment of the present disclosure, the wind wheel further includes:

[0017] A main body, arranged on the second rotating rod;

[0018] There are a plurality of blades, each of which is rotatably arranged on the main body, and the blades are circumferentially distributed along the axis of the main body, the rotation axis of the blade is parallel to the rotation axis of the second rotating rod, and the pulse mechanism drives the main body to rotate through the blades;

[0019] A limit block is arranged on the main body and is located at one side of the blade. After the limit block abuts against the blade, the limit block prevents the blade from rotating.

[0020] For example, in a pulse dust removal device provided in at least one embodiment of the present disclosure, the wind wheel further includes:

[0021] An elastic member, with two ends respectively arranged on the blade and the main body, and the elastic member is used to provide a force for the blade to rotate close to the limit block.

[0022] For example, at least one embodiment of the present disclosure provides a pulse dust removal device, which further includes:

[0023] The guiding member is provided at one end of the first rotating rod away from the fixed ring. The second rotating rod and the wind wheel are both located between the guiding member and the fixed ring. The guiding member is conical, and the tip of the guiding member faces the pulse mechanism. The guiding member is used to guide the wind from the pulse mechanism to the filter bag.

[0024] According to another aspect, at least one embodiment of the present disclosure further provides a pulse dust removal device, including:

[0025] Collection boxes, there are two, which are slidably arranged relative to the housing. After the collection boxes slide, one of the collection boxes is located below the dust generation outlet, and the top of the collection box abuts against the side wall of the dust generation outlet. The collection box has a discharge port for discharging the dust in the collection box;

[0026] A box door is rotatably arranged on the collection box. After the box door rotates, it opens or closes the discharge port;

[0027] A guiding platform is provided at the bottom of the collection box, and the guiding platform is used to guide the objects in the collection box to the box door.

[0028] For example, in a pulse dust removal device provided by at least one embodiment of the present disclosure, it further includes:

[0029] There are two pressing members, and both of the pressing members are arranged to be lifted and lowered on the housing. After the collection boxes slide, the two collection boxes are respectively located below the dust generation outlet and below one of the pressing members. After the pressing members are lifted and lowered, they leave or enter the collection box, and the pressing members are used to compress the dust in the collection box.

[0030] According to another aspect, at least one embodiment of the present disclosure further provides a method for treating iron oxide scale, and the pulse dust removal device is used for dust removal during the iron oxide scale treatment process;

[0031] For example, a method for treating iron oxide scale provided by at least one embodiment of the present disclosure includes:

[0032] S100: The conveying device conveys the solid waste to a dryer for drying;

[0033] S200: The conveying device puts the dried solid waste into a magnetic separation device, and uses the magnetic separation device to screen out the iron-containing waste;

[0034] S300: The iron-containing waste is fed through vibration to evenly convey the iron-containing waste into a crusher for crushing;

[0035] S400: The waste after crushing enters a vibrating screening device, and the waste that does not meet the particle size requirements is conveyed to a pulverizer for pulverization;

[0036] S500: S400 is repeated until the waste reaches a standard particle size and is discharged.

[0037] For example, in at least one embodiment of the present disclosure, a method for treating iron oxide scale is provided, wherein after the dryer reaches the target temperature, the drying is continued for 10 to 20 minutes.

[0038] For example, at least one embodiment of the present disclosure provides a method for treating iron oxide scale, wherein the pulse dust removal device is located on the side of the crusher and the pulverizer, and the pulse dust removal device is used to absorb dust generated during the operation of the crusher and the pulverizer.

[0039] The beneficial effects of the embodiments of the present disclosure are:

[0040] In the present disclosure, the method of shaking the filter bag to clean the dust by moving the support rod with a rotating part effectively avoids the situation where the filter bag is easily damaged by directly hitting the filter bag, and significantly reduces the possibility of damage to the filter bag. The ball-hinged support rod design makes the shaking of the filter bag more flexible and uniform, greatly improving the dust cleaning effect. In the continuous production process of iron oxide crushing, the attachments on the filter bag can be continuously and effectively cleaned, ensuring the filtration efficiency of the filter bag and reducing its replacement frequency. It helps to reduce the maintenance cost of the equipment and ensure the stability and continuity of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0042] Figure 1 This is a schematic diagram of the overall external structure of the present disclosure;

[0043] Figure 2 It is a schematic diagram of the cross-sectional structure of the present disclosure;

[0044] Figure 3 For this disclosure Figure 2 The enlarged structural diagram at B in the middle;

[0045] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention from another angle;

[0046] Figure 5 For this disclosure Figure 4 The enlarged structural diagram at C in the middle;

[0047] Figure 6 For this disclosureFigure 5 The enlarged structural diagram at D in the middle;

[0048] Figure 7 This is a schematic diagram of some results of the fixed circle disclosed in the present invention;

[0049] Figure 8 For this disclosure Figure 7 The enlarged structural diagram at E in the middle;

[0050] Figure 9 For this disclosure Figure 1 Enlarged structural diagram at A in the middle.

[0051] In the figure: 100, shell, 110, filter space, 120, filter bag, 130, fixing plate, 131, mounting hole, 200, fixing ring, 300, support rod, 310, hinge part, 320, toggle part, 330, connecting part, 410, rotating part, 140, pulse mechanism, 420, first rotating rod, 430, second rotating rod, 440, first bevel gear, 450, second bevel gear, 460, wind wheel, 461, main body, 462, blade, 463, limit block, 464, elastic part, 500, guide part, 150, dust outlet, 600, collection box, 610, box door, 620, guide platform, 700, pressing part. DETAILED DESCRIPTION

[0052] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0053] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0054] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0055] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0057] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0058] like Figures 1 to 3 As shown, it shows a pulse dust removal device in an embodiment of the present disclosure, including a shell 100, the shell 100 has a filter space 110, the filter bag 120 is arranged in the filter space 110, and also includes a fixing plate 130, the fixing plate 130 is arranged in the filter space 110, and the fixing plate 130 has a mounting hole 131; the fixing ring 200 is arranged in the mounting hole 131, and the fixing ring 200 is used to fix the bag mouth of the filter bag 120; there are a plurality of support rods 300, and the plurality of support rods 300 are distributed along the circumference of the axis of the fixing ring 200, and the support rod 300 has a hinge part 310, a toggle part 320 and a connecting part 330, and the toggle part 320 and the connecting part 330 are respectively located on opposite sides of the hinge part 310, the hinge part 310 is ball-hinged with the fixing ring 200, and the connecting part 330 is used to connect the bag body of the filter bag 120; the rotating member 410 is rotatably arranged on the fixing ring 200, and the rotating member 410 is used to toggle the toggle part 320 in sequence.

[0059] In a pulse dust removal device, a housing 100 having a filter space 110 is included. The housing 100 has an inlet and an outlet. A filter bag 120 is used to filter between the inlet and the outlet, so that dust with larger particle sizes is blocked in the housing 100 and falls under the action of gravity. Dust with particle sizes smaller than the pores of the filter bag 120 is discharged from the outlet through the filter bag 120. The housing 100 provides a closed environment for the filter space 110 to prevent dust from leaking from other places. The fixing plate 130 is fixed to the inner wall of the housing 100 by bolts or welding. After the filter bag 120 is installed on the mounting hole 131 through the fixing ring 200, the gas with dust entering the filter space 110 from the inlet of the housing 100 must pass through the filter bag 120 before it can be discharged from the outlet of the housing 100. The fixing ring 200 is fixed to the fixing plate 130 by bolts, and part of the fixing ring 200 is located in the mounting hole 131. The bag opening of the filter bag 120 is fixed to the fixing ring 200 by bonding, screws, fixing ring 200, etc. A plurality of support rods 300 are arranged on the fixing ring 200 in a ball hinge manner, and the support rods 300 are distributed around the axis of the fixing ring 200. The support rod 300 integrally penetrates the fixing ring 200, and the support rod 300 has a connecting portion 330, a toggle portion 320 and a hinge portion 310. The hinge portion 310 is hinged to the fixing ring 200 in a ball hinge manner. The connecting portion 330 and the toggle portion 320 are respectively located on opposite sides of the hinge portion 310, and the toggle portion 320 is located above the connecting portion 330. The toggle portion 320 penetrates the fixing ring 200, and the connecting portion 330 is fixed to a corner of the bag body by a clamping member. The rotating member 410 can be configured to be driven by a motor. When the cloth bag needs to be cleaned, the motor is started to drive the rotating member 410 to rotate. During the rotation process, the rotating member 410 sequentially moves the toggle portion 320.

[0060] In the actual working process, for example, when a large amount of dust is generated by the crushing of the iron oxide scale and dust removal is required, the filter bag 120 filters the dust in the filter space 110. When the dust attached to the filter bag 120 needs to be cleaned, the rotating member 410 is rotated to sequentially move the moving parts 320 of each support rod 300. Since the support rod 300 and the fixing ring 200 are ball-jointed, the support rod 300 drives the filter bag 120 to shake under the action of the moving part, thereby cleaning the dust on the filter bag 120.

[0061] This method of shaking the filter bag 120 to clean the dust by moving the support rod 300 through the rotating part 410 effectively avoids the situation where the filter bag 120 is easily damaged by directly hitting the filter bag 120, and significantly reduces the possibility of damage to the filter bag 120. The ball-hinged support rod 300 design makes the shaking of the filter bag 120 more flexible and uniform, greatly improving the dust cleaning effect. In the continuous production process of iron oxide crushing, the attachments on the filter bag 120 can be continuously and effectively cleaned, ensuring the filtration efficiency of the filter bag 120 and reducing its replacement frequency. It helps to reduce the maintenance cost of the equipment and ensure the stability and continuity of the production process.

[0062] In some examples, a first rotating rod 420 is also included, which is rotatably set on the fixed ring 200, and the rotation axis of the first rotating rod 420 coincides with the axis of the fixed ring 200, and the rotating member 410 is rotatably set on the fixed ring 200 through the first rotating rod 420; the second rotating rod 430 is rotatably set on the fixed ring 200, and the rotation axis of the second rotating rod 430 is perpendicular to the rotation axis of the first rotating rod 420; the first bevel gear 440 is set on the first rotating rod 420; the second bevel gear 450 is set on the second rotating rod 430, and the second bevel gear 450 is transmission connected to the first bevel gear 440; the wind wheel 460 is set on the second rotating rod 430, and the pulse mechanism 140 is used to drive the wind wheel 460 to rotate.

[0063] The first rotating rod 420 is perpendicular to the rotating axis of the second rotating rod 430, and the first bevel gear 440 and the second bevel gear 450 can be used to drive the first rotating rod 420 and the second rotating rod 430 perpendicular to each other. The wind wheel 460 is arranged on the second rotating rod 430, and the wind blown by the pulse mechanism 140 can be used as tangential wind to drive the wind wheel 460 to rotate.

[0064] In actual operation, the pulse mechanism 140 drives the wind wheel 460 to rotate, which drives the second rotating rod 430 to rotate. Through the transmission of the second bevel gear 450 and the first bevel gear 440, the first rotating rod 420 is rotated, and then the rotating member 410 is driven to rotate, thereby realizing the movement of the moving part 320 of the support rod 300, thereby achieving the purpose of cleaning the dust on the filter bag 120.

[0065] The pulse mechanism 140 is used to drive the wind wheel 460 to drive the operation of the entire cleaning structure, without the need for an additional power source, thus saving energy. The rotation direction is changed by the transmission of the bevel gear, making the structural design more compact and reasonable, and improving the space utilization rate. This transmission method ensures the stability and accuracy of the rotation of the rotating member 410, thereby improving the cleaning effect and reliability of the filter bag 120.

[0066] In an optimal implementation manner, the rotation axis of the first rotating rod 420 coincides with the axis of the fixed ring 200. There are two toggling rods located on opposite sides of the rotating member 410, and the two toggling rods alternately toggle the toggling portion 320 of the support rod 300.

[0067] For example, as Figures 4 to 8 shown, the wind wheel 460 includes a main body 461, and the main body 461 is arranged on the second rotating rod 430; there are a plurality of blades 462, and the plurality of blades 462 are all rotatably arranged on the main body 461, and the plurality of blades 462 are circumferentially distributed along the axis direction of the main body 461. The rotation axis of the blade 462 is parallel to the rotation axis of the second rotating rod 430. The pulse mechanism 140 drives the main body 461 to rotate through the blade 462; a limiting block 463 is arranged on the main body 461, and the limiting block 463 is located on one side of the blade 462. After the limiting block 463 abuts against the blade 462, the limiting block 463 prevents the blade 462 from rotating.

[0068] The main body 461 is arranged on the second rotating rod 430, and the plurality of blades 462 are circumferentially distributed along the axis of the second rotating rod 430, and the blades 462 are rotatably arranged on the main body 461. The limiting block 463 can limit the blade 462 from rotating in one direction, but does not limit the blade 462 from rotating in the other direction. On the one hand, through the limiting block 463, the blade 462 can receive the tangential wind in one direction, thereby generating the power of rotation. On the other hand, it prevents the wind generated by the pulse mechanism 140 from acting on the blades 462 on both sides of the main body 461 at the same time, resulting in the force cancellation between the blades 462 on both sides.

[0069] During actual operation, the air flow generated by the pulse mechanism 140 acts on the blade 462, pushing the blade 462 to rotate, thereby driving the main body 461 to rotate. When the air flow acts on the blade 462 and causes the blade 462 to rotate and abut against the limiting block 463, the blade 462 can transmit the force of the air flow to the main body 461, so that the main body 461 generates rotation. When the air flow acts on the blade 462 and causes the blade 462 to rotate away from the limiting block 463, the acting force of the air flow causes the blade 462 to rotate, but does not act on the main body 461.

[0070] Through the blade 462, the air flow generated by the pulse mechanism 140 can be better utilized, thereby improving the air flow utilization rate. The structure of the wind wheel 460 is optimized, so that it can more effectively transmit the power to the rotating components under the action of the pulsed air flow, and the operating efficiency of the entire dust removal device is improved.

[0071] For example, in a pulse dust removal device provided by at least one embodiment of the present disclosure, the wind wheel 460 further includes an elastic member 464. Both ends of the elastic member 464 are respectively arranged on the blade 462 and the main body 461, and the elastic member 464 is used to provide a force for the blade 462 to rotate close to the limiting block 463.

[0072] During actual operation, the airflow generated by the pulse mechanism 140 acts on the blade 462, pushing the blade 462 to rotate. When the blade 462 rotates to a position parallel to the pulsed airflow, when the pulsed airflow weakens, the elastic member 464 provides a force for the blade 462 to rotate and approach the limit block 463, enabling the blade 462 to quickly reset and remain in a proper position.

[0073] The elastic member 464 can not only prevent the blade 462 from rotating excessively and affecting the rotation of the main body 461, but also ensure that when the blade 462 rotates to a position perpendicular to the airflow, it can receive the airflow at the best angle, thereby improving the overall efficiency.

[0074] The elastic member 464 can be a torsion spring.

[0075] In some examples, it further includes a guide member 500. The guide member 500 is arranged at one end of the first rotating rod 420 away from the fixed ring 200. The second rotating rod 430 and the wind wheel 460 are both located between the guide member 500 and the fixed ring 200. The guide member 500 is conical, and the tip of the guide member 500 faces the pulse mechanism 140. The guide member 500 is used to direct the wind from the pulse mechanism 140 to the filter bag 120.

[0076] The guide member 500 is conical, and the tip of the guide member 500 faces the pulse mechanism 140. The guide member 500 is supported by the first rotating rod 420. There is a certain distance between the guide member 500 and the fixed ring 200, providing an installation space for the first rotating rod 420, the second rotating rod 430, the wind wheel 460, etc. The size of the guide member 500 should be able to cover the first rotating rod 420 and the second rotating rod 430, but the wind wheel 460 is not within the coverage range of the guide member 500, avoiding the guide member 500 blocking the airflow generated by the pulse mechanism 140 to drive the wind wheel 460 to rotate.

[0077] During actual use, when the wind generated by the pulse mechanism 140 passes through the guide member 500, since the guide member 500 is conical, it can effectively direct the wind to the wind wheel 460, improving the wind receiving efficiency of the wind wheel 460. And the conical guide member 500 can prevent the airflow from hitting the first rotating rod 420 and the second rotating rod 430, resulting in loss of airflow power and reducing the dust removal efficiency.

[0078] Such as Figure 1 、 Figure 4 、 Figure 9As shown, it shows a dust collection device for a pulse dust removal device in another embodiment of the present disclosure, including a collection box 600. There are two collection boxes 600, which are slidably arranged relative to the housing 100. After the collection box 600 slides, one collection box 600 is located below the dust emission outlet 150, and the top of the collection box 600 abuts against the side wall of the dust emission outlet 150. The collection box 600 has a discharge port for discharging the dust in the collection box 600; a box door 610 is rotatably arranged on the collection box 600, and the box door 610 opens or closes the discharge port after rotation; a guiding platform 620 is arranged at the bottom of the collection box 600, and the guiding platform 620 is used to guide the objects in the collection box 600 to the box door 610.

[0079] The collection box 600 is a box body with an open upper part, and the open upper part facilitates the connection with the dust emission outlet 150. The side of the collection box 600 also has a discharge port for discharging materials, which is convenient for taking out the dust in the collection box 600. The two collection boxes 600 can slide relative to the main body 461 with pulleys as the moving basis. When arranging, devices such as oil cylinders, air cylinders, and electric cylinders can be used in combination with a control system to control the sliding of the collection box 600. The two collection boxes 600 alternately collect the dust falling from the dust removal space at the dust emission outlet 150 through sliding, maximizing the avoidance of dust leakage and ensuring continuous production and improving production efficiency. The box door 610 is rotatably arranged on the collection box 600, and the box door 610 can be driven by a motor to rotate to open or close the outlet of the collection box 600. When the collection box 600 is located below the dust emission outlet 150, the box door 610 rotates to close the outlet of the collection box 600 to prevent dust leakage. After the collection box 600 slides away from below the dust emission outlet 150, the box door 610 rotates to open the discharge port of the collection box 600, so that the dust in the collection box 600 can slide out from the discharge port of the collection box 600 under the action of the guiding platform 620.

[0080] Setting two slidable collection boxes 600 improves the efficiency and continuity of dust collection. One can be used for collection while the other can be cleaned or used as a spare. The rotational design of the box door 610 facilitates the removal of the collected materials, with simple and quick operation. The presence of the guiding platform 620 helps to improve the discharge efficiency of the collected materials and reduce residues.

[0081] In some examples, it further includes pressing members 700. There are two pressing members 700, and both pressing members 700 are arranged on the housing 100 in a lifting manner. After the collection box 600 slides, the two collection boxes 600 are respectively located below the dust emission outlet 150 and below one pressing member 700. After the pressing member 700 lifts, it leaves or enters the collection box 600, and the pressing member 700 is used to compress the dust in the collection box 600.

[0082] Two pressing members 700 are respectively located on both sides of the dust emission outlet 150. After the two collection boxes 600 slide, one collection box 600 is located below the pressing member 700. The pressing member 700 can be driven by means of an oil cylinder, an electric cylinder, a pneumatic cylinder, etc.

[0083] In actual work, when the dust in the collection box 600 accumulates to a certain extent, the collection box 600 slides to make the collection box 600 with the accumulated dust slide below the pressing member 700. The pressing member 700 descends into the collection box 600 to compress the dust therein, which can not only reduce the space occupied by the dust, but also improve the density of the dust and reduce the secondary dust during the transfer of the dust.

[0084] A method for treating mill scale, and a pulse dust removal device is used for dust removal during the treatment of mill scale.

[0085] In some examples, the treatment steps of mill scale include: S100: The conveying device conveys the solid waste to a dryer for drying; S200: The conveying device puts the dried solid waste into a magnetic separation device, and uses the magnetic separation device to screen out the iron-containing waste; S300: The iron-containing waste is fed by vibration and conveyed to a crusher for crushing; S400: The waste after crushing enters a vibrating screening device, and the waste that does not meet the particle size requirements is conveyed to a pulverizer for pulverization; S500: S400 is cycled until the waste reaches the standard particle size and is discharged.

[0086] In specific operations: First, a certain amount of solid waste is conveyed to a dryer by a screw conveyor, the screw conveyor is closed, the dryer is adjusted to the required temperature to start drying, and after the dryer reaches the target temperature, drying continues for 10 - 20 minutes. After drying is completed, the outlet of the dryer is opened, and the solid waste is conveyed to a magnetic separator. The impurities with a low iron content are dumped into a waste hopper by the magnetic separator, and the materials adsorbed by the magnetic separator enter a hoist. The hoist conveys the materials to the second floor and is conveyed to a silo on the second floor through a screw conveying device. The crusher is started, and then the iron-containing waste in the silo on the second floor is evenly conveyed to the crusher for crushing through a vibrating feeding device. The materials after crushing are divided into particles, coarse powder, and fine powder according to the particle size. According to the requirements, the particles that do not meet the standard particle size are conveyed to a pulverizer for secondary pulverization. The qualified coarse powder and fine powder are respectively conveyed to the coarse powder packing position and the fine powder packing position for packing. The particles re-enter the vibrating screen after passing through the pulverizer, and the vibrating screen conveys the particles that do not meet the standard particle size back to the pulverizer for pulverization, and this cycle continues until all the particulate materials are output in the form of coarse powder or fine powder.

[0087] For further effects, a condenser can be added at the dryer, and the flue gas generated during the drying process is condensed and collected by the condenser to reduce the emission of soot.

[0088] In some examples, the pulse dust removal device is located on the side of the crusher and the grinder.

[0089] The pulse dust removal device is arranged on the side of the crusher and the grinder, and the pulse dust removal device treats the dust generated at the crusher and the grinder.

[0090] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit them. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A pulse dust removal device, comprising a housing (100), wherein the housing (100) has a filter space (110), a filter bag (120) is arranged in the filter space (110), and characterized in that: Also includes: A fixing plate (130) is arranged in the filtering space (110), and the fixing plate (130) has a mounting hole (131); A fixing ring (200) is arranged in the mounting hole (131), and the fixing ring (200) is used to fix the bag opening of the filter bag (120); A plurality of support rods (300) are provided, wherein the plurality of support rods (300) are distributed along the circumference of the axis of the fixing ring (200), the support rod (300) comprises a hinged portion (310), a toggle portion (320) and a connecting portion (330), wherein the toggle portion (320) and the connecting portion (330) are respectively located on two opposite sides of the hinged portion (310), the hinged portion (310) is spherically hinged to the fixing ring (200), and the connecting portion (330) is used to connect to the outside of the bag body of the filter bag (120); A rotating member (410) is rotatably disposed on the fixing ring (200), and the rotating member (410) is used to sequentially move the moving parts (320).

2. A pulse dust removal device according to claim 1, comprising a pulse mechanism (140), wherein the pulse mechanism (140) is used for pulse dust removal of the filter bag (120), characterized in that: Also includes: a first rotating rod (420) rotatably disposed on the fixing ring (200), wherein the rotating member (410) is rotatably disposed on the fixing ring (200) via the first rotating rod (420); A second rotating rod (430) is rotatably disposed on the fixing ring (200), wherein the rotation axis of the second rotating rod (430) is perpendicular to the rotation axis of the first rotating rod (420); A first bevel gear (440) is arranged on the first rotating rod (420); A second bevel gear (450) is arranged on the second rotating rod (430), and the second bevel gear (450) is transmission-connected to the first bevel gear (440); The wind wheel (460) is arranged on the second rotating rod (430), and the pulse mechanism (140) is used to drive the wind wheel (460) to rotate.

3. A pulse dust removal device according to claim 2, characterized in that: The wind wheel (460) comprises: A main body (461) is arranged on the second rotating rod (430); There are a plurality of blades (462), the plurality of blades (462) are all rotatably disposed on the main body (461), and the plurality of blades (462) are circumferentially distributed along the axis direction of the main body (461), the rotation axis of the blade (462) is parallel to the rotation axis of the second rotating rod (430), and the pulse mechanism (140) drives the main body (461) to rotate through the blades (462); A limit block (463) is arranged on the main body (461), and the limit block (463) is located on one side of the blade (462). After the limit block (463) abuts against the blade (462), the limit block (463) prevents the blade (462) from rotating.

4. A pulse dust removal device according to claim 3, characterized in that: The wind wheel (460) further includes: An elastic member (464) has two ends respectively arranged on the blade (462) and the main body (461), and the elastic member (464) is used to provide a force for the blade (462) to rotate close to the limit block (463).

5. The pulse dust removal equipment according to claim 2, characterized in that: Also includes: The guide member (500) is arranged at one end of the first rotating rod (420) away from the fixing ring (200); the second rotating rod (430) and the wind wheel (460) are both located between the guide member (500) and the fixing ring (200); the guide member (500) is conical, and the tip of the guide member (500) faces the pulse mechanism (140); the guide member (500) is used to guide the wind of the pulse mechanism (140) toward the filter bag (120).

6. The pulse dust removal device according to claim 1, wherein the housing (100) has a dust outlet (150), and the dust outlet (150) is located below the filter bag (120), characterized in that: Also includes: There are two collecting boxes (600) which are slidably arranged relative to the shell (100); after the collecting boxes (600) slide, one of the collecting boxes (600) is located below the dust outlet (150), and the top of the collecting box (600) abuts against the side wall of the dust outlet (150); the collecting box (600) has a discharge port, and the discharge port is used to discharge the dust in the collecting box (600); A box door (610) is rotatably disposed on the collection box (600), and the box door (610) opens or closes the discharge port after rotation; A guide platform (620) is arranged at the bottom of the collection box (600), and the guide platform (620) is used to guide objects in the collection box (600) to the box door (610).

7. The pulse dust removal device according to claim 6, characterized in that: Also includes: The pressure pieces (700) are provided with two pieces. Both of the pressure pieces (700) are arranged on the shell (100) in a lifting manner. After the collection box (600) slides, the two collection boxes (600) are respectively located below the dust outlet (150) and below one of the pressure pieces (700). After the pressure pieces (700) are lifted, they leave or enter the collection box (600). The pressure pieces (700) are used to compress the dust in the collection box (600).

8. A method for treating iron oxide scale, characterized in that: The pulse dust removal equipment according to any one of claims 1 to 7 is used for dust removal during the treatment of iron oxide scale, comprising: S100: The conveying device conveys the solid waste to the dryer for drying; S200: The conveying device puts the dried fixed waste into the magnetic separation device, and uses the magnetic separation device to screen out the iron-containing waste; S300: The iron-containing waste is evenly transported to the crusher for crushing through vibrating feeding; S400: After the crushing, the waste material enters the vibration screening device, and the waste material that does not meet the particle size requirements is transported to the pulverizer for crushing; S500: S400 is repeated until the waste reaches a standard particle size and is discharged.

9. The method for treating iron oxide scale according to claim 8, characterized in that: After the dryer reaches the target temperature, continue drying for 10 to 20 minutes.

10. The method for treating iron oxide scale according to claim 9, characterized in that: The pulse dust removal equipment is located on the sides of the crusher and the pulverizer, and the pulse dust removal device is used to absorb dust generated during the operation of the crusher and the pulverizer.

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