A protective slag roasting device

Abstract

The application discloses a kind of protective slag baking device, it is related to drying equipment technical field, by optimizing the improvement of protective slag baking device in prior art, the protective slag needing drying is carried out using conveying belt structure and drives protective slag to enter drying assembly and gradually discharges to carry out baking operation, using the mesh metal belt body of controlled reciprocating movement at the top of conveying belt structure is screened to protective slag Process and at the same time to the protective slag being baked Stirring and heating;When using, protective slag enters protective slag baking device directly and is screened and gradually falls on conveying belt structure;Realized that protective slag baking device has screening function and stable screening effect, not easy to block hole, heat exchange efficiency is high, drying treatment is efficient, operation process is continuous, need not frequent shutdown and feeding, processing efficiency is high and the technical effects of saving heat energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a protective slag baking device. BACKGROUND

[0002] In the pouring process, it is necessary to add powder or granular protective slag to the surface of the crystallizer molten steel to improve the surface quality of the casting blank and ensure continuous casting. Because the protective slag is easy to absorb moisture, if not treated, it will cause the protective slag to clump, affect the use effect of the protective slag, and even cause accidents. Therefore, the moisture in the protective slag needs to be removed as much as possible before adding the protective slag.

[0003] In the prior art, the moisture in the protective slag is usually removed by baking, specifically: the protective slag is placed in a cylinder, and the outside of the cylinder is baked by burning natural gas, etc., to promote the heating of the protective slag and evaporate the moisture.

[0004] The above scheme can realize the drying of the protective slag, but the protective slag raw material treated by the scheme must be screened, the treatment process is complex, and the heat exchange drying efficiency is low. In addition, due to the limitation of its own structure, frequent shutdown for feeding and discharging is required during operation, the process is complex and energy is wasted seriously. When screening the protective slag raw material, the screen holes of the screening device are easily blocked, frequent cleaning is required, the process is complex and delays the treatment operation.

[0005] Therefore, there is a need for a protective slag baking device with high heat exchange efficiency, efficient drying treatment process, continuous operation process and energy saving. SUMMARY

[0006] The protective slag baking device provided by the embodiments of the present application solves the technical problems of low heat exchange and drying efficiency, complex use process, frequent shutdown for feeding and discharging during operation, and serious energy waste of the protective slag baking device in the prior art, and achieves the technical effects of the protective slag baking device having a screening function, stable screening effect, high heat exchange efficiency, efficient drying treatment, continuous operation process, no need for frequent shutdown for feeding, high treatment efficiency and saving of heat energy.

[0007] The embodiments of the present application provide a protective slag baking device, which comprises an outer shell, a material conveying assembly, a screening and heat exchange assembly, and a drying assembly.

[0008] The outer shell is a box structure and is horizontally arranged, and has a feeding pipe at the top and a discharging port at the bottom.

[0009] The material conveying assembly is a horizontally arranged conveying belt structure and is used to move and output the protective slag, and comprises two supporting belt rollers and an outer sleeve belt made of a metal flexible belt, and further comprises a guide block.

[0010] The guiding block is located in the space surrounded by the outer belt, the top surface is an arc-shaped concave surface and abuts against the inner ring of the outer belt so that the edge of the part of the belt near the top of the outer belt is high in the middle and low on both sides;

[0011] The screening and heat exchanging assembly comprises a mesh metal belt body arranged on the top of the outer belt, penetrating through the drying assembly and moving under control; the mesh metal belt body is deformed under the guidance of a plurality of rollers to form a recess for holding the protective slag at the bottom of the feeding pipe; the part of the mesh metal belt body penetrating through the drying assembly abuts against the top surface of the outer belt; the mesh metal belt body moves back and forth under control to realize the screening and stirring of the protective slag.

[0012] The drying assembly comprises a top heat exchanging block and a bottom heat exchanging block, which are respectively located in the space surrounded by the outer belt and arranged close to the outer belt to bake the protective slag on the outer belt by the temperature of the blocks.

[0013] Further, the top heat exchanging block and the bottom heat exchanging block are both horizontally arranged cylindrical blocks fixed on the inner wall of the shell.

[0014] The bottom surface of the top heat exchanging block is a convex arc surface.

[0015] The top surface of the bottom heat exchanging block is a concave arc surface.

[0016] Further, the screening and heat exchanging assembly comprises a winding roller, a reversing roller, a sliding roller assembly and a screening and heat exchanging belt; the mesh metal belt body is the screening and heat exchanging belt.

[0017] The winding roller is positioned on the inner wall of the shell and arranged close to the two supporting belt winding rollers.

[0018] The reversing roller is arranged on the top of the material conveying assembly and close to one side of the feeding pipe.

[0019] The sliding roller assembly serves to guide, dredge and assist in dumping the screened and selected clumps, is arranged on the top of the material conveying assembly and away from the reversing roller, is a combination of a plate body and a roller body, one of the rollers is densely covered with protrusions or spikes and moves up and down under control.

[0020] The screening and heat exchanging belt is a soft mesh belt body made of metal material, the two ends of which are wound and positioned on the two winding rollers and bent into a U shape at the position directly below the feeding pipe.

[0021] Further, the shell further has a crushing roller assembly arranged therein.

[0022] The crushing roller assembly is used to crush the clumped protective slag and improve the utilization rate of the protective slag, comprising an extension top rod and a crushing roller.

[0023] The telescopic top rod is a telescopic rod arranged vertically or obliquely, which is controlled to be telescoped, and the top is fixed at the bottom or one side of the feeding pipe;

[0024] The rolling roller is a hard roller body arranged horizontally, which is positioned at the bottom of the telescopic top rod by a hard support;

[0025] In use, the rolling roller moves up and down to crush the part of the caked protective slag together with the dredging roller.

[0026] Preferably, it further comprises a knocking assembly;

[0027] The bottom of the top heat exchange block is provided with a containing groove for providing space for sputtering of the protective slag, and the top of the bottom heat exchange block is provided with a mounting groove for mounting the knocking assembly;

[0028] The knocking assembly is a motor with a protrusion positioned on the output shaft, which is positioned in the mounting groove and controlled to rotate to knock the inner ring of the outer sleeve belt, and the number is one or more;

[0029] In use, the knocking assembly frequently knocks the outer sleeve belt, so that the protective slag on the top of the outer sleeve belt is forced to burst and splash, and the protective slag on the top of the outer sleeve belt is mixed together and changes the protective slag closely attached to the outer sleeve belt.

[0030] Preferably, the end of the top heat exchange block is provided with a material leveling plate;

[0031] The material leveling plate is a vertical hard plate body, the bottom surface is arc-shaped, the whole is D-shaped, the bottom surface is closer to the outer sleeve belt than the bottom surface of the top heat exchange block and is adapted to the curvature of the top surface of the outer sleeve belt, which is used to flatten the protective slag conveyed on the outer sleeve belt.

[0032] Preferably, the material leveling plate is slidingly positioned on the end surface of the top heat exchange block and controlled to slide up and down, so as to change the thickness of the flattened protective slag as needed;

[0033] For different types and states of protective slag, the moving speed of the outer sleeve belt and the height of the material leveling plate are adjusted as needed.

[0034] Preferably, the screening heat exchange belt is composed of multiple rectangular mesh bodies, the hole sizes on different rectangular mesh bodies are the same or different, and in use, according to the type and state of the protective slag to be processed, the rectangular mesh bodies used for screening and the rectangular mesh bodies used for stirring the protective slag are selected as needed.

[0035] Preferably, the top surface and / or the bottom surface of the rectangular mesh body used for stirring the protective slag is provided with an agitating body;

[0036] The agitating body is a metal soft strip bent in a wave shape, which stirs the protective slag carried on the outer sleeve belt with the movement of the screening heat exchange belt;

[0037] The presence of the stirring body can greatly stir the protective slag carried on the outer sleeve.

[0038] Preferably, the reversing roller is also slidingly positioned on the inner wall of the outer shell and is controlled to ascend and descend;

[0039] With the ascending and descending of the reversing roller, the screening heat exchange belt located between the top heat exchange block and the bottom heat exchange block and the screening heat exchange belt located at the bottom of the feeding pipe can reciprocate at different amplitudes, thereby achieving that the moving amplitude of the screening heat exchange belt can simultaneously facilitate the efficient stirring and screening.

[0040] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0041] By optimizing and improving the protective slag baking device in the prior art, the protective slag to be dried is carried by the conveying belt structure and driven into the drying assembly for baking operation and gradually discharged, the protective slag is screened and treated by the controlled reciprocating mesh metal belt body located at the top of the conveying belt structure, and the protective slag being baked is stirred and heated at the same time; in use, the protective slag is directly screened and gradually falls on the conveying belt structure after entering the protective slag baking device; the technical problems of low heat exchange and drying efficiency, complicated use process, frequent stoppage for feeding during operation process, and serious energy waste of the protective slag baking device in the prior art are effectively solved, thereby realizing the technical effects of the protective slag baking device having the screening function, stable screening effect, high heat exchange efficiency, efficient drying treatment, continuous operation process, no need for frequent stoppage for feeding, high processing efficiency, and saving of heat energy. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a schematic view of the position relationship of the components of the protective slag baking device of the present application;

[0043] Figure 2 It is a schematic view of the internal structure of the protective slag baking device of the present application;

[0044] Figure 3 It is a schematic view of the appearance structure of the protective slag baking device of the present application;

[0045] Figure 4 It is a schematic view of the position relationship of the drying assembly, the outer sleeve belt, and the screening heat exchange belt;

[0046] Figure 5 It is a schematic view of the position relationship between the material conveying assembly and the screening heat exchange assembly;

[0047] Figure 6 It is a schematic view of the appearance structure of the drying assembly;

[0048] Figure 7A schematic view of the positional relationship between the outer sleeve and the screening heat exchange zone;

[0049] Figure 8 A schematic view of the structure of the bottom heat exchange block;

[0050] Figure 9 A schematic view of the structure of the top heat exchange block;

[0051] Figure 10 A schematic view of the structure of the screening heat exchange zone;

[0052] Figure 11 A schematic view of the layout relationship of the stirring bodies in the screening heat exchange zone.

[0053] In the figure:

[0054] The shell 100, the first outlet 110, the second outlet 120, the feeding pipe 130, the exhaust port 140, the supporting belt roller 210, the outer sleeve 220, the guide block 230, the winding roller 310, the reversing roller 320, the sliding roller assembly 330, the vertical support plate 331, the top reversing roller 332, the dredging roller 333, the screening heat exchange zone 340, the side brush strip 341, the stirring body 342, the abutting shaping body 350, the abutting shaping plate 360, the telescopic jacking rod 371, the rolling roller 372, the top heat exchange block 410, the communication port 411, the containing groove 412, the bottom heat exchange block 420, the installation groove 421, the knocking assembly 422, and the material uniformizing plate 430. DETAILED DESCRIPTION

[0055] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which preferred embodiments of the present application are shown. The present application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0056] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are only for the purpose of illustration and do not indicate the only embodiments.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0058] Example 1

[0059] As Figures 1 to 7As shown, the protective slag baking device of this application includes an outer shell 100, a material conveying assembly, a screening and heat exchange assembly, a drying assembly, a power assembly, and a control unit.

[0060] like Figure 3 As shown, the outer shell 100 is a box structure, arranged horizontally, which serves to support other components of the protective slag baking device and also reduces heat diffusion. The top of the outer shell 100 is provided with a feed pipe 130 for feeding and an exhaust port 140 for exhaust. The bottom is provided with a first outlet 110 and a second outlet 120 near both ends. The first outlet 110 is closer to the feed pipe 130 than the second outlet 120. The first outlet 110 and the second outlet 120 are used to output the sifted agglomerates and the dried protective slag, respectively.

[0061] like Figure 1 As shown, the material conveying assembly is used to convey protective slag inside the outer shell 100, thereby conveying the screened protective slag to the drying assembly and allowing the dried protective slag to be output from the second outlet 120. The material conveying assembly is a horizontally oriented conveyor belt structure, including two support belt drums 210 and an outer belt 220, and also includes a guide block 230 for shaping the outer belt 220. The support belt drums 210 are horizontally oriented rigid drums, located near the inner bottom of the outer shell 100, two in number, and respectively located near the first outlet 110 and the second outlet 120, positioned on the outer shell 100. On the inner wall of 00, under the coordinated control of the control unit and the power component, it rotates to drive the outer belt 220 to move; the outer belt 220 is an annular belt and a soft metal belt, which is sleeved on the two support belt drums 210 and stretched into an elongated shape and always in a taut state; there are two guide blocks 230, which are respectively set near the two ends of the drying component, located in the space enclosed by the outer belt 220, with the top surface being an arc-shaped concave surface and abutting against the inner circle of the outer belt 220; due to the presence of the guide blocks 230, the edge of the outer belt 220 near its top is higher than the middle.

[0062] like Figure 1 and Figure 2 As shown, the screening and heat exchange assembly is used to screen out the agglomerated protective slag and participate in heat exchange to improve drying efficiency. It includes a mesh metal belt set on the top of the outer belt 220 and controlled to move along its own length. Under the guidance of multiple horizontally placed rollers, the mesh metal belt deforms at the bottom of the feed pipe 130 to form a depression for catching the protective slag to be screened. Part of the mesh metal belt abuts against the top surface of the outer belt 220. When the mesh metal belt moves back and forth in a controlled manner, it realizes the screening and stirring of the protective slag.

[0063] Further, the screening heat exchange assembly comprises the winding roller 310, the reversing roller 320, the sliding roller assembly 330, the screening heat exchange belt 340 and the contact shaping body 350; the mesh metal belt body is the screening heat exchange belt 340;

[0064] The winding roller 310 is a horizontal hard winding roller, and two winding rollers are positioned on the inner wall of the outer shell 100 and rotate under the cooperative control of the control unit and the power assembly. The two winding rollers are at the same height as the supporting belt rollers 210 and are arranged close to the two supporting belt rollers 210 respectively and close to the end of the outer shell 100 relative to the supporting belt rollers 210.

[0065] The reversing roller 320 is a horizontal hard roller, and the end thereof is rotationally connected to the inner wall of the outer shell 100. The reversing roller is arranged on the top of the material conveying assembly and close to one side of the feeding pipe 130 and is used to guide the moving direction of the screening heat exchange belt 340.

[0066] The sliding roller assembly 330 is used to guide, dredge and assist the dumping of the screened lumps. The sliding roller assembly is arranged on the side of the feeding pipe 130 away from the reversing roller 320 and on the top of the material conveying assembly. The sliding roller assembly comprises the vertical support plate 331, the top reversing roller 332 and the dredging roller 333. The vertical support plate 331 is a vertical hard plate body, and two vertical support plates are slidingly positioned on the inner wall of the outer shell 100 and move up and down under the cooperative control of the control unit and the power assembly. The vertical support plate is used to support the top reversing roller 332 and the dredging roller 333. The top reversing roller 332 is a horizontal hard roller body, and the two ends thereof are rotationally connected to the two vertical support plates 331 respectively. The dredging roller 333 is a horizontal hard roller body, and the two ends thereof are rotationally connected to the two vertical support plates 331 respectively. The side surface of the dredging roller is densely covered with protrusions or spikes which are matched with the holes of the screening heat exchange belt 340. When the screening protection slag is performed, the dredging roller 333 is always close to the screening heat exchange belt 340.

[0067] The screening heat exchange belt 340 is a soft mesh belt body made of metal material. The two ends of the screening heat exchange belt are wound and positioned on the two winding rollers 310 respectively and are always close to the top surface of the outer sleeve 220 and the reversing roller 320. The screening heat exchange belt is bent into a U shape at the position directly below the feeding pipe 130. When the winding roller 310 rotates, the screening heat exchange belt 340 is moved.

[0068] The contact shaping body 350 is a vertical hard plate body, and is fixed on the inner wall of the outer shell 100 and located on the top of the material conveying assembly. The bottom surface of the contact shaping body is a concave circular arc surface, and the contact shaping body is arranged close to one of the guide blocks 230 and the bottom surface thereof is matched with the top surface of the guide block 230. The contact shaping body is used to guide the top surface of the outer sleeve 220 after the contact and deformation of the screening heat exchange belt 340.

[0069] Further, as shown inFigure 2 and Figure 4 As shown, the screening heat exchange assembly also includes a contact shaping plate 360; the contact shaping plate 360 ​​is a D-shaped rigid plate, vertically arranged, two in number, fixed on the inner wall of the outer shell 100 and located on both sides of the feed pipe 130, the arc surface is located at its bottom, and the bottom surface abuts against the screening heat exchanger 340, used to guide the screening heat exchanger 340 to deform.

[0070] Furthermore, the width of the outer sheath 220 and the screening heat exchanger 340 is more than 0.9 times the width of the internal space of the outer shell 100.

[0071] like Figure 7 As shown, a side brush strip 341 is provided on both sides of the screening heat exchanger 340; the side brush strip 341 is a strip-shaped brush, which is fixed on the screening heat exchanger 340 and abuts against the inner wall of the outer shell 100 to prevent the protective slag from falling from the gap between the screening heat exchanger 340 and the inner wall of the outer shell 100; the length of the side brush strip 341 is less than half the distance between the two support belt drums 210.

[0072] like Figure 6 As shown, the drying assembly is used to dry the protective slag on the outer sleeve 220, and includes a top heat exchange block 410 and a bottom heat exchange block 420. Both the top heat exchange block 410 and the bottom heat exchange block 420 are horizontally placed cylindrical blocks fixed to the inner wall of the outer casing 100, and their widths are approximately the same as the width of the internal space of the outer casing 100. The top heat exchange block 410 is located at the top of the outer sleeve 220, with a convex arc surface at its bottom, and is positioned close to the top surface of the outer sleeve 220. The bottom surface of the top heat exchange block 410 and the top surface of the outer sleeve 220 are... The spacing between them is less than 5 cm; the bottom heat exchange block 420 is located in the space enclosed by the outer sleeve 220, and its top surface is a concave arc surface, with a spacing of less than 1 cm from the inner ring of the outer sleeve 220; the bottom surface of the top heat exchange block 410 and the top surface of the bottom heat exchange block 420 have the same curvature; the outer sleeve 220 and the screening heat exchange tape 340 pass through the gap between the top heat exchange block 410 and the bottom heat exchange block 420; in use, the protective slag on the outer sleeve 220 is dried by heating the bottom surface of the top heat exchange block 410 and the top surface of the bottom heat exchange block 420.

[0073] Preferably, the bottom surface of the top heat exchange block 410 and the top surface of the bottom heat exchange block 420 are provided with electric heating plates, electric heating strips and / or electric heating wires for controlled heating.

[0074] Preferably, the top heat exchange block 410 and the bottom heat exchange block 420 are both hollow cylindrical blocks, the bottom surface of the top heat exchange block 410 and the top surface of the bottom heat exchange block 420 are made of metal, and the top heat exchange block 410 and the bottom heat exchange block 420 are both provided with a communication port 411 for the hot gas to enter and exit; in use, the top heat exchange block 410 and the bottom heat exchange block 420 are heated by the hot gas to dry the protective slag.

[0075] Further, the inner wall of the top heat exchange block 410 is provided with a thermal insulation layer on the area other than the inner bottom, and the inner wall of the bottom heat exchange block 420 is provided with a thermal insulation layer on the area other than the inner top.

[0076] Further, the top surface of the guide block 230 and / or the bottom surface of the abutting shaping body 350 is provided with a plurality of cylindrical wheels for reducing friction.

[0077] Further, during the operation of the protective slag baking device, the material conveying assembly continuously operates to continuously move the outer sleeve belt 220; the screening and heat exchange belt 340 reciprocally moves to screen the protective slag (separate the block-shaped impurities and the agglomerated protective slag) and stir the protective slag being dried between the top heat exchange block 410 and the bottom heat exchange block 420 and conduct the heat from the bottom heat exchange block 420 to the protective slag being dried, thereby improving the drying efficiency.

[0078] The power assembly is used to provide power for the operation of each component of the protective slag baking device, and the control unit is used to control the coordinated operation of each component of the protective slag baking device, which are both prior art and will not be described here.

[0079] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0080] When the protective slag baking device according to the embodiment of the present application is used:

[0081] The protective slag raw material enters the outer housing 100 from the feeding pipe 130 and then falls on the screening and heat exchange belt 340, and with the reciprocating movement of the screening and heat exchange belt 340, the block-shaped impurities and the agglomerated protective slag are screened out, and the other protective slag falls on the top of the outer sleeve belt 220; the slipper roller assembly 330 is periodically lowered to make the screened material (block-shaped impurities and agglomerated protective slag) fall into the first outlet 110 and then be output from the outer housing 100; the protective slag on the outer sleeve belt 220 enters between the top heat exchange block 410 and the bottom heat exchange block 420 to be baked with the movement of the outer sleeve belt 220; during the baking process, the presence and movement of the screening and heat exchange belt 340 will stir the protective slag and heat the protective slag by heat conduction to efficiently and gradually remove the moisture of the protective slag; finally, the baked (dried) protective slag is gradually discharged from the second outlet 120.

[0082] Furthermore, the housing 100 is equipped with a thermocouple for monitoring real-time temperature and a humidity sensor for monitoring real-time humidity.

[0083] Furthermore, the exhaust port 140 is connected to a waste heat recovery device (such as a finned heat exchanger).

[0084] Furthermore, the second outlet 120 is equipped with a weighing component for weighing and a material distribution and blocking mechanism. Both the weighing component and the material distribution and blocking mechanism are existing technologies and will not be described in detail here.

[0085] Furthermore, such as Figure 2 As shown, the outer casing 100 also houses a crushing roller assembly; the crushing roller assembly is used to crush agglomerated protective slag and improve the utilization rate of the protective slag, including a telescopic top rod 371 and a crushing roller 372; the telescopic top rod 371 is a vertical or inclined telescopic rod that extends and retracts under the coordinated control of the control unit and the power component, and its top is fixed to the bottom or side of the feed pipe 130; the crushing roller 372 is a horizontally placed rigid roller body, which is positioned at the bottom of the telescopic top rod 371 by a rigid bracket; in use, the crushing roller 372 moves up and down, and works with the unblocking roller 333 to crush some of the agglomerated protective slag.

[0086] Furthermore, the rolling roller 372 rotates under the coordinated control of the control unit and the power component.

[0087] Furthermore, to further improve drying efficiency and the uniformity of moisture content of the dried protective slag, the protective slag baking device of this application also includes a striking component 422; such as Figure 8 and Figure 9 As shown, the bottom of the top heat exchange block 410 is provided with a receiving groove 412 for providing space for the splashing of protective slag, and the top of the bottom heat exchange block 420 is provided with a mounting groove 421 for mounting the striking component 422. The striking component 422 is a motor with a protrusion positioned on its output shaft, positioned in the mounting groove 421, and rotates under the coordinated control of the control unit and the power component to strike the inner ring of the outer sleeve 220. There are one or more of them. In use, the striking component 422 frequently strikes the outer sleeve 220, causing the protective slag on the top of the outer sleeve 220 to explode and splash due to the force, so that the protective slag on the top of the outer sleeve 220 mixes together and changes the protective slag that is tightly attached to the outer sleeve 220.

[0088] Further, an end of the top heat exchange block 410 close to the contact shaping body 350 is provided with a material leveling plate 430; the material leveling plate 430 is a vertical hard plate body, the bottom surface is an arc surface, the whole is a D-shaped, the bottom surface is closer to the outer sleeve belt 220 than the bottom surface of the top heat exchange block 410 and is adapted to the curvature of the top surface of the outer sleeve belt 220, for flattening the protective slag conveyed on the outer sleeve belt 220 (for homogenizing the thickness of the material layer).

[0089] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0090] The technical problems of low heat exchange and drying efficiency, complicated use process, frequent stoppage for feeding in the operation process, serious energy waste in the protective slag baking device in the prior art are solved, and the technical effects of the protective slag baking device with the screening function and stable screening effect, high heat exchange efficiency, efficient drying treatment, continuous operation process, no frequent stoppage for feeding, high processing efficiency and saving of heat energy are achieved.

[0091] Embodiment 2

[0092] In order to further improve the practicality and applicability of the protective slag baking device, different processing modes are adopted for different types and states of protective slag (protective slag with different humidity, different forms and different components) to make the drying of the protective slag more efficient, and specifically:

[0093] The material leveling plate 430 is slidingly positioned on the end surface of the top heat exchange block 410 and slides up and down under the cooperative control of the control unit and the power assembly, thereby changing the thickness of the flattened protective slag as needed;

[0094] The moving speed of the outer sleeve belt 220 and the height of the material leveling plate 430 are adjusted as needed for different types and states of protective slag.

[0095] Preferably, as shown in Figure 10 The screening heat exchange belt 340 is composed of a plurality of rectangular mesh bodies, the hole sizes of different rectangular mesh bodies are the same or different, and in use, the rectangular mesh bodies used for screening and the rectangular mesh bodies used for stirring the protective slag are selected as needed according to the type and state of the protective slag to be processed.

[0096] Further, as shown in Figure 11 The top surface and / or the bottom surface of the rectangular mesh body used for stirring the protective slag is provided with an agitating body 342; the agitating body 342 is a metal soft strip bent in a wave shape, which stirs the protective slag on the outer sleeve belt 220 with the movement of the screening heat exchange belt 340; the existence of the agitating body 342 can stir the protective slag on the outer sleeve belt 220 to a greater extent.

[0097] Preferably, the stirring bodies 342 are positioned on the top surface of the screening heat exchange zone 340 (if the stirring bodies 342 are positioned on the bottom surface of the screening heat exchange zone 340, the heat exchange efficiency will be negatively affected).

[0098] Preferably, as shown in Figure 2 Preferably, the reversing roller 320 is also slidably positioned on the inner wall of the outer housing 100 and is lifted and lowered under the coordinated control of the control unit and the power assembly; in cooperation with the lifting and lowering of the reversing roller 320, the screening heat exchange zone 340 between the top heat exchange block 410 and the bottom heat exchange block 420 and the screening heat exchange zone 340 at the bottom of the feeding pipe 130 can reciprocate at different amplitudes, thereby achieving the efficient stirring and screening of the screening heat exchange zone 340.

[0099] The above description is only the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A protective slag baking apparatus characterized by: The shell (100), the material conveying assembly, the screening and heat exchanging assembly, and the drying assembly are included. The shell (100) is a box structure, is arranged transversely, is provided with a feeding pipe (130) at the top, and is provided with a discharging port at the bottom. The material conveying assembly is a transversely arranged conveying belt structure, is used for driving the protective slag to move and output, includes two supporting belt rollers (210) and an outer sleeve belt (220) which is a metal soft belt, and further includes a guide block (230). The guide block (230) is located in the space surrounded by the outer sleeve belt (220), the top surface is an arc-shaped concave surface and abuts against the inner ring of the outer sleeve belt (220), so that the part of the outer sleeve belt (220) close to the top of the outer sleeve belt (220) has a high middle and a low middle. The screening and heat exchanging assembly includes a mesh metal belt body arranged at the top of the outer sleeve belt (220), penetrates through the drying assembly and is controlled to move, the mesh metal belt body is deformed into a recess for containing the protective slag at the bottom of the feeding pipe (130) under the guidance of a plurality of rollers, and the part of the mesh metal belt body penetrating through the drying assembly abuts against the top surface of the outer sleeve belt (220). The mesh metal belt body is controlled to reciprocatingly move, so that the screening and stirring of the protective slag are realized. The drying assembly includes a top heat exchanging block (410) and a bottom heat exchanging block (420), the two are respectively located at the top of the outer sleeve belt (220) and in the space surrounded by the outer sleeve belt (220), are arranged close to the outer sleeve belt (220) and are used for baking the protective slag on the outer sleeve belt (220) through the temperature of the drying assembly.

2. The protective slag baking apparatus of claim 1, wherein: The top heat exchanging block (410) and the bottom heat exchanging block (420) are both transversely arranged columnar blocks, are fixed on the inner wall of the shell (100). The bottom surface of the top heat exchanging block (410) is a convex arc surface. The top surface of the bottom heat exchanging block (420) is a concave arc surface.

3. The protective slag baking apparatus of claim 2, wherein: The screening and heat exchanging assembly includes a winding roller (310), a reversing roller (320), a sliding roller assembly (330) and a screening and heat exchanging belt (340), and the mesh metal belt body is the screening and heat exchanging belt (340). The number of the winding rollers (310) is two, the winding rollers (310) are positioned on the inner wall of the shell (100) and are arranged close to the two supporting belt rollers (210) respectively. The reversing roller (320) is arranged at the top of the material conveying assembly and close to one side of the feeding pipe (130). The sliding roller assembly (330) plays a role of guiding the screening and heat exchanging belt (340), dredging the screening and heat exchanging belt (340) and assisting the dumping of the screened agglomerates, is arranged at the top of the material conveying assembly and away from the reversing roller (320) of the feeding pipe (130), is a combination of a plate body and a roller body and one of the rollers is densely provided with protrusions or spikes and is controlled to be lifted and lowered. The screening and heat exchanging belt (340) is a soft mesh belt body, is made of metal and is wound and positioned on the two winding rollers (310) respectively, is bent into a U-shaped form at the position directly below the feeding pipe (130).

4. The protective slag baking apparatus of claim 3, wherein: The shell (100) further internally has a crushing roller assembly. The crushing roller assembly is used for crushing the agglomerated protective slag and improving the utilization rate of the protective slag, includes a telescopic top rod (371) and a crushing roller (372). The telescopic top rod (371) is a vertical or inclined telescopic rod, which is controlled to be telescopic, and the top is fixed at the bottom or one side of the feeding pipe (130); The rolling roller (372) is a horizontal hard roller body, which is positioned at the bottom of the telescopic top rod (371) through a hard support; In use, the rolling roller (372) moves up and down to extrude and crush part of the caked protective slag together with the dredging roller (333).

5. The protective slag baking apparatus of claim 2, wherein: It also includes a knocking assembly (422); The bottom of the top heat exchange block (410) is provided with a containing groove (412) for providing space for sputtering of the protective slag, and the top of the bottom heat exchange block (420) is provided with a mounting groove (421) for mounting the knocking assembly (422); The knocking assembly (422) is a motor with a protrusion positioned on the output shaft, which is positioned in the mounting groove (421) and is controlled to rotate and then knock the inner ring of the outer sleeve belt (220), and the number is one or more. In use, the knocking assembly (422) frequently knocks the outer sleeve belt (220) so that the protective slag on the top of the outer sleeve belt (220) is forced to burst and splash, and the protective slag on the top of the outer sleeve belt (220) is mixed together and changes the protective slag close to the outer sleeve belt (220).

6. A protective slag baking apparatus according to any one of claims 1 to 5, characterized in that: The end of the top heat exchange block (410) is provided with a material leveling plate (430); The material leveling plate (430) is a vertical hard plate body, the bottom surface is an arc surface, the whole is a D-shaped, the bottom surface is closer to the outer sleeve belt (220) than the bottom surface of the top heat exchange block (410) and is adapted to the curvature of the top surface of the outer sleeve belt (220), which is used to flatten the protective slag conveyed on the outer sleeve belt (220).

7. The protective slag baking apparatus of claim 6, wherein: The material leveling plate (430) is slidingly positioned on the end surface of the top heat exchange block (410) and is controlled to slide up and down, thereby changing the thickness of the flattened protective slag as needed; For different types and states of protective slag, the moving speed of the outer sleeve belt (220) and the height of the material leveling plate (430) are adjusted as needed.

8. The protective slag baking apparatus of claim 3, wherein: The screening heat exchange belt (340) is composed of multiple rectangular mesh bodies, and the hole sizes on different rectangular mesh bodies are the same or different. In use, according to the type and state of the protective slag to be processed, the rectangular mesh body used for screening and the rectangular mesh body used for stirring the protective slag are selected as needed.

9. The protective slag baking apparatus of claim 8, wherein: The top surface and / or bottom surface of the rectangular mesh body used for stirring the protective slag is provided with an agitating body (342); The agitating body (342) is a metal soft strip bent in a wave shape, which stirs the protective slag carried on the outer sleeve belt (220) as the screening heat exchange belt (340) moves; The existence of the agitating body (342) can more greatly stir the protective slag carried on the outer sleeve belt (220).

10. A protective slag baking device according to claim 8 or 9, characterized in that: The reversing roller (320) is also slidingly positioned on the inner wall of the outer shell (100) and is controlled to be lifted and lowered; In cooperation with the lifting and lowering of the reversing roller (320), the screening heat exchange belt (340) located between the top heat exchange block (410) and the bottom heat exchange block (420) and the screening heat exchange belt (340) located at the bottom of the feeding pipe (130) can reciprocate at different amplitudes, thereby achieving efficient stirring and screening of the screening heat exchange belt (340) at the same time.

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