Preparation device for preparing magnesium-calcium refractory material from dolomite phosphate tailings

Abstract

The invention provides a preparation device for preparing a magnesium-calcium refractory material from dolomitic phosphate tailings, and relates to the technical field of refractory material preparation, the preparation device comprises a shell and a conveying assembly arranged in the shell, the top of the shell is provided with a feeding port, the inner wall of the shell is rotatably provided with material guide plates, and the material guide plates are symmetrically arranged along the center of the feeding port; transmission assemblies are arranged at the two ends of the guide plate, and baffles fixedly connected with the transmission assemblies are arranged in the shell in a sliding mode. In the using process, when the feeding amount is large and raw materials are stacked on the side, opposite to the feeding port, of the baffle, the stacked raw materials push the baffle to move, when the baffle moves, the bottom ends of the two sets of material guiding plates are close to each other, the feeding amount is reduced, raw material stacking is avoided, and the phenomenon that the raw materials on the conveying assembly are thick is avoided. And through the arrangement of the baffle, the thickness of the dried raw materials on the conveying assembly is kept within a relatively stable interval.

Description

Technical Field

[0001] The present invention relates to the technical field of refractory material preparation, specifically to a preparation device for preparing magnesia-calcia refractories using dolomitic phosphorus tailings. Background Art

[0002] Dolomitic phosphorus tailings are solid wastes generated during the beneficiation process of phosphate ore. The main component is dolomite, which is rich in MgO and CaO, and has both magnesia and calcia characteristics. During the development of phosphate ore resources in China, tens of millions of tons of phosphorus tailings are generated every year. Due to their large stacking volume and low utilization rate; however, the high MgO / CaO content of dolomitic phosphorus tailings makes them an ideal raw material for preparing magnesia-calcia refractories, which can replace the traditional process that relies on natural dolomite or magnesite, significantly reducing the raw material cost and realizing the resource utilization of solid wastes; in the process of using dolomitic phosphorus tailings to prepare magnesia-calcia refractories, preparation devices such as crushing, grinding, drying / calcining are generally required to prepare the phosphorus tailings into refractories.

[0003] Chinese Patent Publication No.: CN118009687A discloses a drying device for refractory material production, including a first mounting frame. A conveyor belt is provided in the inner cavity of the first mounting frame. The top of the first mounting frame is fixedly connected with a second mounting frame, a third mounting frame, and a paving assembly. A first drying assembly is provided at the top of the second mounting frame, and a crushing assembly is provided on the inner cavity side wall. A second drying assembly is provided at the top of the third mounting frame. One side of the first mounting frame is fixedly connected with a landslide, and a collection box is provided at the bottom of the landslide. The four corners of the bottom of the first mounting frame are fixedly connected with legs.

[0004] In the prior art, when using a belt dryer to dry the raw materials of refractories, if the instantaneous feeding amount at the feeding port is large, the raw materials will accumulate on the conveyor belt, and the accumulated raw materials will cause uneven thickness of the raw material layer. In this way, the hot air cannot effectively penetrate the raw material area with a thicker thickness, resulting in incomplete drying of the refractories.

[0005] Therefore, a preparation device for preparing magnesia-calcia refractories using dolomitic phosphorus tailings is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to make up for the deficiencies of the prior art and propose a preparation device for preparing magnesia-calcia refractories using dolomitic phosphorus tailings to solve the above-mentioned problems.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A preparation device for preparing magnesia-calcium refractory materials using dolomite-phosphorus tailings, comprising a housing and a conveying component arranged inside the housing. The top of the housing is provided with a feed inlet. A guiding plate is rotatably arranged on the inner wall of the housing, and the guiding plates are symmetrically arranged along the center of the feed inlet. Transmission components are arranged at both ends of the guiding plate. A baffle plate fixedly connected to the transmission component is slidably arranged inside the housing. When the baffle plate moves away from the guiding plate, the transmission component drives the guiding plates to rotate and approach relatively. Two groups of rollers are arranged on the side of the baffle plate away from the guiding plate. Both ends of the rollers are rotatably connected to the side wall of the housing. A plurality of groups of rake teeth are arranged in an array on the rollers, and the rollers are in transmission cooperation with the conveying component.

[0008] Further scheme: The conveying component includes a conveyor belt and a driving shaft; The driving shaft is arranged at one end inside the conveyor belt. A driven shaft is arranged at the end of the conveyor belt away from the driving shaft, and an auxiliary shaft is arranged between the driving shaft and the driven shaft inside the conveyor belt.

[0009] Further scheme: The transmission component includes a first rack; A synchronous gear is meshed with the bottom of the end of the first rack close to the baffle plate. A second rack is meshed with the bottom of the synchronous gear, and the synchronous gear is rotatably connected to the housing. The relatively far ends of the first rack and the second rack are respectively rotatably connected to the guiding plates. A connecting rod is fixedly arranged at the end of the first rack close to the baffle plate, and the end of the connecting rod away from the first rack is fixedly connected to the baffle plate.

[0010] Further scheme: A toothed ring is fixedly arranged at the end of one group of the rollers. A first gear is slidably connected to the end of the auxiliary shaft. The toothed ring is in transmission cooperation with the first gear. An installation cavity is arranged inside the side wall of the housing. The first gear and the toothed ring are arranged inside the installation cavity, and the two groups of rollers are in transmission connection.

[0011] Further scheme: A synchronous plate is fixedly arranged on the outer periphery of the middle part of the rake teeth. The synchronous plate is arranged inside the roller. A rocking handle is fixedly arranged at one end of the synchronous plate. A guide rail is arranged on the side of the installation cavity away from the roller. The end of the rocking handle away from the roller is slidably matched with the guide rail.

[0012] Further scheme: A fixing block is arranged on the side of the baffle plate away from the guiding plate. Both ends of the fixing block are fixedly connected to the inner wall of the housing. A cross plate and a sealing plate are respectively arranged at both ends of the side of the baffle plate close to the fixing block. The cross plate is elastically connected to the inner wall of the fixing block.

[0013] Further solution: A trigger plate is fixedly arranged on one side of the baffle close to the fixed block. A square groove for sliding adaptation of the trigger plate is arranged on the side of the fixed block opposite to the baffle. A moving plate is arranged on one side of the first gear relative to the roller. The end of the moving plate far from the first gear extends into the square groove and is in sliding cooperation with the trigger plate.

[0014] Further solution: An activity groove is arranged below the square groove inside the fixed block. A pressing plate is slidably arranged in the activity groove. Driving shafts corresponding to the rake teeth one by one are arranged in an array on the pressing plate. A limiting column is fixedly connected to the bottom of the driving shaft. A top column is elastically arranged at both ends of the rake tooth.

[0015] Further solution: A pressing rod is fixedly arranged at the center of the top of the pressing plate. The pressing rod slidably extends into the square groove and is in sliding cooperation with the trigger plate. A spring is fixedly arranged between the top of the pressing plate and the activity groove.

[0016] Further solution: One end of the activity groove is provided with an extension shaft. The end of the extension shaft far from the pressing plate rotatably extends into the installation cavity and is in transmission connection with a second gear. The second gear is in transmission cooperation with the first gear. The second gear is rotatably connected to the inner wall of the housing. A second bevel gear is fixedly arranged at the end of the extension shaft close to the pressing plate. A first bevel gear in transmission cooperation with the second bevel gear is fixedly arranged on a group of driving shafts close to the extension shaft.

[0017] Compared with the prior art, the municipal raw material processing and drying equipment has the following beneficial effects:

[0018] Through the cooperation of the transmission component and the baffle in the present invention, if the feeding amount is large and the raw materials are piled up on one side of the baffle relative to the feeding port, the piled raw materials will push the baffle to move. When the baffle moves, the first rack is driven to move through the connecting rod, and then the second rack moves towards the direction of the first rack, so as to realize that the bottoms of the two guide plates are close to each other, reduce the feeding amount, avoid the accumulation of raw materials and the too thick raw materials on the conveying component, and avoid the problems that the rake teeth cannot effectively turn over the raw materials and cause great stress to the rake teeth and damage them. And through the setting of the baffle, the thickness of the dried raw materials on the conveying component is kept in a relatively stable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the guide plate and the baffle of the present invention;

[0021] Figure 3 is the present invention Figure 2 The enlarged structural schematic diagram at A in;

[0022] Figure 4 This is a three-dimensional structure schematic diagram of the movable slot and the square slot of the present invention;

[0023] Figure 5 This is a three-dimensional structure schematic diagram of the moving plate of the present invention;

[0024] Figure 6 This is a three-dimensional structure schematic diagram of the extension column of the present invention;

[0025] Figure 7 This is a structure schematic diagram of the guide rail of the present invention;

[0026] Figure 8 This is a three-dimensional structure schematic diagram of the trigger plate of the present invention;

[0027] Figure 9 This is a structure schematic diagram of the middle cross-section of the rake teeth of the present invention;

[0028] Figure 10 This is a structure schematic diagram of the first bevel gear and the second bevel gear of the present invention.

[0029] In the figure:

[0030] 1. Housing; 2. Conveyor assembly; 201. Driving shaft; 202. Auxiliary shaft; 3. Feed inlet; 4. Guide plate; 401. First rack; 402. Synchronous gear; 403. Second rack; 404. Connecting rod; 5. Baffle; 501. Cross plate; 502. Trigger plate; 6. Fixed block; 601. Movable slot; 602. Square slot; 7. Drum; 8. Driving shaft; 801. Limit post; 802. First bevel gear; 803. Second bevel gear; 9. Rake teeth; 901. Sleeve; 902. Synchronous plate; 903. Crank; 904. Guide rail; 10. Moving plate; 11. First gear; 12. Second gear; 13. Tooth ring; 14. Top post; 15. Pressure rod; 151. Pressure plate; 152. Extension shaft; 16. Hollow tube; 17. Triangular block. Detailed implementation manners

[0031] Please refer to Figure 1 - Figure 10, the present invention provides the following embodiments: a preparation device for preparing magnesia-calcium refractory materials using dolomite-phosphorus tailings, including a housing 1 and a conveying component 2 disposed inside the housing 1. A feed inlet 3 is provided at the top of the housing 1. A guiding plate 4 is rotatably disposed on the inner wall of the housing 1. The guiding plate 4 is symmetrically arranged along the center of the feed inlet 3. Transmission components are provided at both ends of the guiding plate 4. A baffle 5 fixedly connected to the transmission components is slidably disposed inside the housing 1. The baffle 5 is disposed above the conveying component 2 and on the side of the guiding plate 4 away from the feed inlet 3. When the baffle 5 moves away from the guiding plate 4, the guiding plate 4 rotates relatively closer through the transmission components. Two groups of rollers 7 are provided on the side of the baffle 5 away from the guiding plate 4. Both ends of the rollers 7 are rotatably connected to the side walls of the housing 1. A plurality of groups of rake teeth 9 are horizontally arranged in an array on the rollers 7. The rollers 7 are in transmission cooperation with the conveying component 2.

[0032] Please refer specifically to Figure 1 - Figure 5 , the raw materials of the refractory materials enter the conveying component 2 inside the housing 1 through the feed inlet 3, and then are dried inside the housing 1 under the conveying of the conveying component 2. The guiding plate 4 can be used to realize the real-time adjustment of the feeding amount of the feed inlet 3, so as to avoid too many raw materials on the conveying component 2, which affects the drying efficiency of the raw materials. The dried raw materials are discharged from the housing 1 in the conveying direction of the conveying component 2.

[0033] It should be noted that: both ends of the conveying component 2 protrude from the ends of the housing 1. The conveying component 2 includes a conveyor belt and a driving shaft 201. The driving shaft 201 is disposed at one end inside the conveyor belt. A driven shaft is disposed at the end of the conveyor belt away from the driving shaft 201. And a plurality of auxiliary shafts 202 are arranged in an array between the driving shaft 201 and the driven shaft inside the conveyor belt. The driving shaft 201, the driven shaft, and the auxiliary shafts 202 achieve the effect of conveying raw materials inside the housing 1 by the conveyor belt. The feed inlet 3 is disposed at one end position at the top of the housing 1. And a protective box for fixing and protecting the protruding end of the conveying component 2 is fixedly disposed on the outer side wall of the housing 1 near the feed inlet 3. A driving motor for driving one group of driving shafts 201 to rotate is provided on one side of the protective box. An outlet is provided above the conveying component 2 at the end of the housing 1 away from the protective box, so as to discharge the dried raw materials. And support plates are fixedly disposed on the side walls of the housing 1 at both ends of the conveying component 2.

[0034] The distance between the two groups of rollers 7 is greater than the distance that the rake teeth 9 extend out of the rollers 7, so as not to affect the relative rotation of the two groups of rollers 7. When the auxiliary shaft 202 rotates, it drives the rollers 7 to rotate, and then the rake teeth 9 are used to disperse and turn over the raw materials on the conveyor belt, improving the drying efficiency.

[0035] Preferably, a thermal unit for drying the raw materials is provided on one side of the outer shell 1, and the thermal unit conveys hot air into the outer shell 1 through a pipeline and a blower. The thermal unit is specifically a common device used in the prior art for thermally drying the raw materials of refractory materials. The detailed related structures and working principles will not be described in detail here.

[0036] Please refer specifically to Figure 2 、 Figure 3 and Figure 5 , the transmission assembly includes a first rack 401; a synchronous gear 402 is meshed at the bottom end of the first rack 401 close to the baffle 5, and a second rack 403 is meshed at the bottom of the synchronous gear 402. The first rack 401, the synchronous gear 402, and the second rack 403 are all arranged inside the side wall of the outer shell 1, and the synchronous gear 402 is rotatably connected to the outer shell 1. The first rack 401 and the second rack 403 are arranged in opposite directions. The opposite ends of the first rack 401 and the second rack 403 that are relatively far away are respectively rotatably connected to the guide plates 4. A connecting rod 404 is fixedly arranged at the end of the first rack 401 close to the baffle 5. The end of the connecting rod 404 away from the first rack 401 slides through the side wall of the outer shell 1 and is fixedly connected to one side of the baffle 5; the top height of the baffle 5 is higher than the bottom height of the guide plate 4. In this way, through the setting of the baffle 5, when feeding through the feed port 3, if the feed amount is large and accumulates on the side of the baffle 5 relative to the feed port 3, the accumulated raw materials will generate a force on the baffle 5 in the direction away from the guide plate 4, thereby pushing the baffle 5 to move. When the baffle 5 moves, the baffle 5 drives the first rack 401 to move through the connecting rod 404, and then through the synchronous gear 402, the second rack 403 moves in the direction of the first rack 401, thereby achieving the effect that the bottom ends of the two guide plates 4 rotate and approach each other, and further reducing the feed amount, avoiding the problems of raw material accumulation and ineffective drying of the raw materials on the conveying assembly 2 due to the relatively thick raw materials, as well as the problems that the rake teeth 9 cannot effectively turn over the raw materials and the relatively thick raw materials cause large stress to the rake teeth 9 and cause damage. Through the setting of the baffle 5, the thickness of the raw materials to be dried on the conveying assembly 2 is maintained in a relatively stable range.

[0037] In order to prevent the transmission assembly from being affected by the raw materials, a telescopic plate can be slidably arranged on the inner wall of the outer shell 1 to protect the transmission assembly. The telescopic plate can be arranged between the two guide plates 4 and at the position corresponding to the transmission assembly, so as to realize the telescopic plate to contract when the guide plates 4 rotate and approach or extend when the guide plates 4 rotate away. The specific shape and size are not limited, and it is only necessary to dynamically block the part of the transmission assembly between the two guide plates 4.

[0038] Please refer specifically to Figure 2 、 Figure 4 - Figure 7, a toothed ring 13 is fixedly arranged at the end of a group of drums 7, that is, toothed rings 13 are arranged at both ends of a group of drums 7. The end of the auxiliary shaft 202 is slidably connected with a first gear 11 that is in transmission cooperation with the toothed ring 13. And mounting cavities are arranged in the side walls on both sides of the housing 1. The first gear 11 and the toothed ring 13 are arranged in the mounting cavities. The two groups of drums 7 are connected by belt drive; during use, the end of the auxiliary shaft 202 passes through the mounting cavity, and the toothed ring 13 is arranged on the side of the mounting cavity close to the drum 7. In the initial state, when drying the raw materials, the driving motor is started to drive the driving shaft 201 to rotate. The rotation of the driving shaft 201 causes the conveyor belt to rotate under the action of the driven shaft and the auxiliary shaft 202, and the driven shaft and the auxiliary shaft 202 will also rotate under the action of the conveyor belt. Subsequently, the external raw materials enter the conveying assembly 2 through the feeding port 3. The driving motor is started to drive the driving shaft 201 to rotate. Subsequently, the driven shaft, the auxiliary shaft 202, and the conveyor belt all rotate. When the auxiliary shaft 202 rotates, at this time, the first gear 11 and the toothed ring 13 are meshed and matched. Therefore, through the cooperation of the first gear 11 and the toothed ring 13, the auxiliary shaft 202 will cause the drum 7 to rotate, and the rotation of the rake teeth 9 can disperse and turn over the raw materials on the conveying assembly 2, avoiding the problems that the raw materials agglomerate and affect the drying efficiency and the raw materials at the bottom cannot be dried.

[0039] Further, a synchronous plate 902 is fixedly arranged on the outer periphery of the middle part of the rake teeth 9. The synchronous plate 902 is arranged in the drum 7. A rocking handle 903 is fixedly arranged at the end of the synchronous plate 902. A guide rail 904 is arranged on the side of the mounting cavity away from the drum 7. The end of the rocking handle 903 away from the drum 7 is slidably matched with the guide rail 904; please refer to Figure 6 , during actual use, multiple groups of rake teeth 9 on a group of drums 7 are fixedly connected by a group of synchronous plates 902. When the drum 7 rotates to make the rake teeth 9 in a vertical state, the bottom end of the rake teeth 9 extends out of the drum 7 at the maximum and there is a gap between the rake teeth 9 and the conveying assembly 2, avoiding damage to the conveying assembly 2 caused by the overlong rake teeth 9. At this time, the top end of the rake teeth 9 shrinks inside the side wall of the drum 7, and the end of the corresponding rocking handle 903 away from the synchronous plate 902 is parallel to the end of the rake teeth 9 extending out of the drum 7, and the end of the rocking handle 903 is at the lowest end of the guide rail 904. Through the rocking handle 903 and the guide rail 904, the dynamic reciprocating expansion and contraction of the rake teeth 9 relative to the drum 7 are realized, that is, when approaching the conveying assembly 2, one end of the rake teeth 9 extends out to disperse and turn over the raw materials, and the corresponding other end shrinks inside the drum 7. Through the contraction action, the outer wall of the rake teeth 9 is cleaned, avoiding the attachment of raw materials to it, which in turn affects the turning effect of the rake teeth 9 on the raw materials.

[0040] The guide rail 904 is specifically composed of a groove with a first quarter-circular structure and a second approximately U-shaped structure that are opposite to each other. The first section is arranged on the side of the roller 7 facing the driving shaft 201. The first section and the second section are connected end to end. When the end of the crank 903 is in the first groove, the maximum extension of one end of the rake teeth 9 corresponding to the crank 903 is outside the roller 7, and similarly, the other end is retracted inside the side wall of the roller 7. When the crank 903 is in the second groove, when the crank 903 slides in it, it will cause one end of the corresponding rake teeth 9 to first move and contract into the roller 7. When rotating past the dynamic vertex of the roller 7, it will then move and extend outside the roller 7. Similarly, the other end of the rake teeth 9 makes the opposite movement.

[0041] Please refer specifically to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 8 On the side of the baffle 5 away from the material guide plate 4, there is a fixing block 6. Both ends of the fixing block 6 are fixedly connected to the inner wall of the housing 1. On both ends of the side of the baffle 5 close to the fixing block 6, there are respectively a cross plate 501 and a blocking plate. The cross plate 501 and the inner wall of the fixing block 6 are elastically connected by elastic columns. During actual use, the cross plate 501 is arranged above the blocking plate. The side of the fixing block 6 close to the baffle 5 is flush with the top of the roller 7, and the bottom of the fixing block 6 is in sliding fit with the top of the roller 7. The blocking plate is set as a structure that can be telescoped. In this way, when the baffle 5 moves towards the fixing block 6 under the action of the raw material, it can move back to its original position under the action of the corresponding cross plate 501 and elastic columns, and the blocking plate can prevent the accumulated raw material from passing through the gap between the baffle 5 and the roller 7.

[0042] Furthermore, a trigger plate 502 is fixedly arranged on the side of the baffle 5 close to the fixing block 6. The trigger plate 502 is arranged between the cross plate 501 and the blocking plate. On the side of the fixing block 6 opposite to the baffle 5, there is a square groove 602 that is slidably adapted to the trigger plate 502. On the side of the first gear 11 opposite to the roller 7, there is a moving plate 10. The end of the moving plate 10 away from the first gear 11 slides through the side wall of the housing 1 and extends into the square groove 602 to be in sliding fit with the trigger plate 502, and one end of the moving plate 10 close to the square groove 602 is provided with an inclined surface facing the trigger plate 502.

[0043] During actual use, a circular groove is provided on the side of the first gear 11 close to the moving plate 10, and it is slidably connected to the moving plate 10 through the circular groove. The moving plate 10 can only slide horizontally under the action of the side wall of the housing 1. The auxiliary shaft 202 and the first gear 11 are slidably connected through the cooperation of a chute and a slider, and a spring is provided in the chute. In this way, after the first gear 11 slides away from the drum 7, it can automatically reset under the action of the spring. In the initial state, the first gear 11 is in a meshed state with the toothed ring 13 under the cooperation of the corresponding spring, chute and slider. The end of the moving plate 10 is close to the end of the trigger plate 502. When there is a large amount of feed and it accumulates, the baffle 5 moves towards the fixed block 6. The movement of the baffle 5 causes the trigger plate 502 to move towards the moving plate 10 and, through the action of the inclined surface, causes the moving plate 10 to move towards the first gear 11, thereby pushing the first gear 11 to move away from the drum 7 and separate from the toothed ring 13. That is, the rotation of the auxiliary shaft 202 no longer drives the drum 7 to rotate, thus avoiding the increase in stress on the rake teeth 9 caused by the accumulated raw materials. If it follows the rotation of the auxiliary shaft 202, the risk of damage will increase.

[0044] Furthermore, an activity groove 601 is provided below the square groove 602 on the side wall of the fixed block 6. A pressing plate 151 is slidably arranged in the activity groove 601. A driving shaft 8 corresponding to each rake tooth 9 is arranged in an array on the pressing plate 151. A limiting column 801 is fixedly connected to the bottom of the driving shaft 8. A top column 14 is elastically arranged in both ends of the rake tooth 9 through a spring. During actual use, multiple groups of driving shafts 8 are connected by a chain or a belt. The driving shaft 8 includes a transmission part and a telescopic part. The transmission part is rotatably connected to the pressing plate 151. The end of the telescopic part away from the transmission part is slidably connected to the side wall of the fixed block 6, and the telescopic part can elastically expand and contract. The limiting column 801 is fixedly arranged at the bottom of the telescopic part. The telescopic part and the transmission part are connected by a universal shaft. The sizes of the limiting column 801 and the top column 14 match.

[0045] Preferably, a pressure rod 15 is fixedly arranged at the center of the top of the pressing plate 151. The pressure rod 15 slidably extends into the square groove 602 and is slidably matched with the trigger plate 502. A spring is fixedly arranged between the top of the pressing plate 151 and the movable groove 601, and the spring is sleeved on the periphery of the pressure rod 15. During actual use, in the initial state, the baffle 5 is separated from the fixed block 6, the top end of the pressure rod 15 protrudes into the square groove 602, and there is a gap between the middle parts of the pressure rod 15 and the trigger plate 502; when drying raw materials, when there is a large amount of raw materials accumulated on the side of the baffle 5 close to the feed port 3, the baffle 5 moves towards the fixed block 6, so that the trigger plate 502 moves first to push the moving plate 10 into the installation cavity, separating the first gear 11 from the toothed ring 13. Subsequently, the trigger plate 502 continues to move and is slidably matched with the pressure rod 15, causing the pressure rod 15 to move downward. The movement of the pressure rod 15 pushes the pressing plate 151 downward, thereby causing the entire driving shaft 8 to move downward. Since the transmission member and the telescopic member are connected by a universal shaft and the telescopic member is slidably connected to the side wall of the fixed block 6, when the pressing plate 151 moves, the transmission member is used to push the telescopic member towards the direction of the drum 7. Furthermore, the limiting column 801 corresponds to the top column 14 on the rake teeth 9. If the limiting column 801 does not correspond to the top column 14 at this time, the limiting column 801 moves towards the drum 7 and fits against the outer wall of the drum 7. Since the telescopic member can elastically expand and contract, there will be no jamming problem. Subsequently, since the drum 7 no longer rotates actively and the rake teeth 9 extend out of the periphery of the drum 7, when the conveying assembly 2 rotates, the accumulated raw materials are continuously conveyed. Subsequently, the extended rake teeth 9 will rub against the raw materials, causing the drum 7 to rotate through the rake teeth 9. When the end of the rake teeth 9 retracted into the drum 7 rotates to correspond to the limiting column 801, the limiting column 801 elastically extends into the rake teeth 9 and fits against the top column 14, and pushes the top column 14 into the rake teeth 9, making the groove where the top column 14 is located adapt to the limiting column 801, thereby completing the engagement between the limiting column 801 and the rake teeth 9 and realizing the limitation of the drum 7. The raw materials are turned over by the fixed rake teeth 9, avoiding the problem that the rake teeth 9 rotating around the drum 7 are prone to damage when there is accumulated raw materials.

[0046] It should be noted that: the telescopic members on a group of driving shafts 8 close to the baffle 5 are inclined. When the limiting column 801 corresponds to and fits against the top column 14, the two groups of drums 7 and the rake teeth 9 thereon present the Figure 2 state shown, thereby improving the working efficiency and quality of raw material drying; when the limiting column 801 is separated from the top column 14, the top column 14 elastically moves back to its original position, and then seals the groove adapted to the limiting column 801 (the groove where the top column 14 is located), preventing raw materials from entering and affecting the engagement and adaptation of the limiting column 801.

[0047] A notch is provided in the middle of the trigger plate 502, and an inclined surface facing the pressure rod 15 is provided at the bottom of the notch. In this way, when the trigger plate 502 moves towards the fixed block 6, it can first cooperate with the moving plate 10 and then cooperate with the pressure rod 15. When the trigger plate 502 moves back to its original position, it first disengages from the pressure rod 15 and then disengages from the moving plate 10, avoiding the problem of damage caused by conflicts between the cooperation of the first gear 11 and the toothed ring 13 when the drive shaft 8 and the harrow teeth 9 cooperate.

[0048] Please refer specifically to Figure 4 、 Figure 5 、and Figure 8 - Figure 10 One end of the movable groove 601 is provided with an extension shaft 152. The end of the extension shaft 152 away from the pressure plate 151 rotates into the corresponding installation cavity, and is connected by a belt drive to a second gear 12 that is in transmission cooperation with the corresponding first gear 11. The second gear 12 is rotatably connected to the inner wall of the housing 1. A second bevel gear 803 is fixedly provided at the end of the extension shaft 152 close to the pressure plate 151. A first bevel gear 802 that is in transmission cooperation with the second bevel gear 803 is fixedly provided on a set of drive shafts 8 close to the extension shaft 152.

[0049] In actual use, only one set of extension shafts 152 is provided. The second gear 12 is arranged on the side of the toothed ring 13 away from the drum 7, and there is still space between the side of the second gear 12 away from the drum 7 and the installation cavity. The second bevel gear 803 is arranged below the first bevel gear 802. In the initial state, the pressure plate 151 is at the initial position in the middle of the movable groove 601 under the action of the spring. At this time, the drive shaft 8 is away from the drum 7, the pressure rod 15 extends into the movable groove 601, the second bevel gear 803 and the first bevel gear 802 are separated, the second gear 12 is separated from the first gear 11, and the first gear 11 and the toothed ring 13 are engaged; when the baffle 5 moves towards the fixed block 6, the trigger plate 502 first acts on the moving plate 10 to separate the first gear 11 from the toothed ring 13. After the first gear 11 and the toothed ring 13 are separated, it continues to move and meshes with the second gear 12. Subsequently, when the first gear 11 rotates, it drives the second gear 12 to rotate, thereby causing the extension shaft 152 to rotate. When the trigger plate 502 moves and cooperates with the pressure rod 15 to move the pressure rod 15 downward, the drive shaft 8 is moved downward through the pressure plate 151. Subsequently, the first bevel gear 802 and the second bevel gear 803 are engaged, so that multiple sets of drive shafts 8 rotate. When the pressure plate 151 moves downward, the limit post 801 extends into the end of the corresponding harrow tooth 9 and fits with the top post 14. When positioning the drum 7, the harrow teeth 9 are simultaneously rotated, thereby accelerating the conveying and crushing and dispersing of the piled raw materials and avoiding the problem of the piled raw materials caking again.

[0050] Further, a triangular block 17 is fixedly arranged at one end of the top column 14 close to the synchronizing plate 902. Hollow tubes 16 are symmetrically arranged along the center of the inner edge of the rake teeth 9. The end of the hollow tube 16 is slidably connected to the side wall of the triangular block 17. Sleeve tubes 901 that slide out of the rake teeth 9 are arranged on the hollow tube 16 in multiple groups in an array, and the sleeve tubes 901 are communicated with the hollow tube 16. In actual use, the heat unit also conveys hot air into the drum 7 through a pipeline. When the drum 7 rotates with the auxiliary shaft 202, the sleeve tubes 901 contract inside the rake teeth 9, and the hot air conveyed into the drum 7 passes through the sleeve tubes 901 inside the drum 7, passes through the hollow tubes 16, and is ejected from the sleeve tubes 901 extending out of the drum 7. In this way, when the rake teeth 9 disperse and turn the raw materials, hot air is simultaneously conveyed into the turned raw materials, accelerating the drying process of the raw materials; when the raw materials are piled up, the baffle 5 moves to separate the first gear 11 and the toothed ring 13, and also moves the limiting column 801 to extend into the end of the rake teeth 9 and push the top column 14 to move. The movement of the top column 14 causes the triangular block 17 to move towards the center inside the rake teeth 9, thereby causing the two hollow tubes 16 to move away from each other. Subsequently, the sleeve tubes 901 extend out of the periphery of the rake teeth 9. In this way, when the drive shaft 8 rotates to drive the rake teeth 9 to rotate self by the limiting column 801, the piled raw materials can be quickly dispersed through the sleeve tubes 901 extending out of the rake teeth 9, thus improving the drying efficiency of the raw materials.

[0051] Hoses are fixedly connected to both ends of the hollow tube 16. The end of the hose away from the hollow tube 16 passes through the side wall of the rake teeth 9 and extends to a position close to the top column 14 at the end of the rake teeth 9. In this way, during use, part of the hot air will be ejected towards the top column 14 through the hose, thereby avoiding the raw materials adhering to the top column 14 from affecting the effect of the limiting column 801 moving towards it and fitting. At the same time, a positioning disc is elastically connected to the periphery of the limiting column 801 away from the baffle 5, and the bottom of the positioning disc is adapted to the inner wall of the end of the rake teeth 9. When the limiting column 801 moves towards the top column 14, the positioning disc first fits with the inner wall of the end of the rake teeth 9, thereby improving the accuracy of the corresponding fitting between the limiting column 801 and the top column 14.

Claims

1. Preparation device for preparing magnesia-calcia refractory materials using dolomite phosphate tailings, comprising a housing (1) and a conveying assembly (2) arranged inside the housing (1), wherein a feed inlet (3) is provided at the top of the housing (1), and it is characterized in that: A material guiding plate (4) is rotatably arranged on the inner wall of the housing (1). The material guiding plates (4) are symmetrically arranged along the center of the feeding port (3). Transmission components are arranged at both ends of the material guiding plate (4). A baffle (5) fixedly connected with the transmission component is slidably arranged in the housing (1). When the baffle (5) moves away from the material guiding plate (4), the transmission component drives the material guiding plate (4) to rotate relatively and approach. Two groups of rollers (7) are arranged on the side of the baffle (5) away from the material guiding plate (4). Both ends of the roller (7) are rotatably connected with the side wall of the housing (1). A plurality of groups of rake teeth (9) are arranged in an array on the roller (7). The roller (7) is in transmission cooperation with the conveying component (2).

2. The preparation device for preparing magnesia-calcia refractory materials by using dolomitic phosphorus tailings according to claim 1, characterized in that: The conveying component (2) includes a conveyor belt and a driving shaft (201). The driving shaft (201) is arranged at one end inside the conveyor belt. A driven shaft is arranged at the end of the conveyor belt away from the driving shaft (201). An auxiliary shaft (202) is arranged between the driving shaft (201) and the driven shaft inside the conveyor belt.

3. The preparation device for preparing magnesia-calcia refractory materials using dolomite-phosphorus tailings according to claim 1, characterized in that: The transmission component includes a first rack (401). A synchronous gear (402) is engaged with the bottom of the end of the first rack (401) close to the baffle (5). A second rack (403) is engaged with the bottom of the synchronous gear (402). The synchronous gear (402) is rotatably connected with the housing (1). The relatively far ends of the first rack (401) and the second rack (403) are respectively rotatably connected with the material guiding plate (4). A connecting rod (404) is fixedly arranged at the end of the first rack (401) close to the baffle (5). The end of the connecting rod (404) away from the first rack (401) is fixedly connected with the baffle (5).

4. The preparation device for preparing magnesia-calcia refractory materials using dolomite-phosphorus tailings according to claim 2, characterized in that: A toothed ring (13) is fixedly arranged at the end of a group of the rollers (7). A first gear (11) is slidably connected with the end of the auxiliary shaft (202). The toothed ring (13) is in transmission cooperation with the first gear (11). An installation cavity is arranged inside the side wall of the housing (1). The first gear (11) and the toothed ring (13) are arranged in the installation cavity. The two groups of rollers (7) are in transmission connection with each other.

5. The preparation device for preparing magnesia-calcium refractory materials by using dolomitic phosphorus tailings according to claim 4, wherein: A synchronous plate (902) is fixedly arranged on the outer periphery of the middle of the rake tooth (9). The synchronous plate (902) is arranged inside the roller (7). A rocking handle (903) is fixedly arranged at one end of the synchronous plate (902). A guide rail (904) is arranged on the side of the installation cavity away from the roller (7). The end of the rocking handle (903) away from the roller (7) is in sliding cooperation with the guide rail (904).

6. The preparation device for preparing magnesia-calcia refractory materials using dolomite-phosphorus tailings according to claim 4, characterized in that: A fixing block (6) is arranged on the side of the baffle (5) away from the material guiding plate (4). Both ends of the fixing block (6) are fixedly connected with the inner wall of the housing (1). Cross plates (501) and a sealing plate are respectively arranged at both ends of the side of the baffle (5) close to the fixing block (6). The cross plate (501) and the inner wall of the fixing block (6) are elastically connected.

7. The preparation device for preparing magnesia-calcia refractory materials using dolomite phosphate tailings according to claim 6, characterized in that: On one side of the baffle (5) close to the fixed block (6), a trigger plate (502) is fixedly arranged. On the side of the fixed block (6) opposite to the baffle (5), a square groove (602) for sliding fit with the trigger plate (502) is arranged. On the side of the first gear (11) opposite to the roller (7), a moving plate (10) is arranged. The end of the moving plate (10) away from the first gear (11) extends into the square groove (602) and is in sliding fit with the trigger plate (502).

8. The preparation device for preparing magnesia-calcia refractory materials using dolomitic phosphorus tailings according to claim 7, characterized in that: Inside the fixed block (6), an activity groove (601) is arranged below the square groove (602). A pressing plate (151) is slidably arranged in the activity groove (601). Driving shafts (8) corresponding to the rake teeth (9) one by one are arranged in an array on the pressing plate (151). A limiting column (801) is fixedly connected to the bottom of the driving shaft (8). A top column (14) is elastically arranged inside both ends of the rake tooth (9).

9. The preparation device for preparing magnesia-calcia refractory materials using dolomitic phosphorus tailings according to claim 8, characterized in that: At the center of the top of the pressing plate (151), a pressing rod (15) is fixedly arranged. The pressing rod (15) slidably extends into the square groove (602) and is in sliding fit with the trigger plate (502). A spring is fixedly arranged between the top of the pressing plate (151) and the activity groove (601).

10. The preparation device for preparing magnesia-calcia refractory materials using dolomite-phosphorus tailings according to claim 9, characterized in that: One end of the activity groove (601) is provided with an extension shaft (152). The end of the extension shaft (152) away from the pressing plate (151) rotatably extends into the installation cavity and is in transmission connection with a second gear (12). The second gear (12) is in transmission cooperation with the first gear (11). The second gear (12) is rotatably connected to the inner wall of the housing (1). At the end of the extension shaft (152) close to the pressing plate (151), a second bevel gear (803) is fixedly arranged. On a group of driving shafts (8) close to the extension shaft (152), a first bevel gear (802) in transmission cooperation with the second bevel gear (803) is fixedly arranged.

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