Discharging pipe device of rotary furnace

Abstract

The utility model relates to the technical field of rotary furnaces, and discloses a rotary furnace blanking pipe device which comprises a rotary furnace body and a bottom plate and further comprises a screw elevator installed on one side of the top of the bottom plate, a blanking pipe is arranged below a discharge port of the screw elevator, and a supporting frame is connected to the surface of the blanking pipe in a bolted mode. According to the rotary furnace, under the cooperation of the driving motor and the turning mechanism, materials in the discharging pipe can be turned, the materials can be evenly preheated, and therefore the stability and efficiency of the rotary furnace body on material smelting can be guaranteed, and meanwhile through the cooperation of the L-shaped supporting plate, the connecting mechanism and the turning mechanism, the materials can be evenly preheated. According to the rotary furnace discharging pipe, the driving force of the driving motor can be transmitted to the wall scraping mechanism, so that the wall scraping mechanism scrapes materials adhered to the inner wall of the discharging pipe and the top of the partition plate, and the problems that in the using process of an existing rotary furnace discharging pipe, the materials are preheated unevenly, and the adhered materials are inconvenient to clean are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary furnaces, in particular to a material feeding pipe device for a rotary furnace. Background Art

[0002] A rotary furnace is a high-temperature reaction equipment used for smelting metals. The rotary furnace gets its name from its special structure, that is, the furnace body is cylindrical and can rotate around a horizontal axis. It uses high temperature to melt metal ore or metal raw materials. It is widely used in the steel industry.

[0003] In order to reduce fuel consumption and improve smelting efficiency, the temperature of the material must be increased to make it close to the required melting temperature before being put into the rotary furnace. Some existing rotary furnaces will use the high-temperature flue gas generated when smelting metals in the feed pipe to preheat the input materials. During the preheating process, the materials are in a stacked state and the distribution of the heat source is not uniform, which will lead to inconsistent distribution of the preheating temperature of the materials. Some parts of the materials may be overheated, while other parts may not be fully preheated, which will affect the stability and efficiency of the metal entering the rotary furnace for melting.

[0004] At the same time, the material will expand in volume after being heated in the discharge pipe, which will cause the material to easily adhere to or clog the inner wall. Over time, the material adhering to the inner wall of the discharge pipe will agglomerate, thereby affecting the normal flow and discharge of the material. Since the discharge pipe is in a high temperature state for a long time due to preheating, it is very inconvenient for the staff to perform cleaning operations, which will increase the cost of subsequent maintenance of the equipment. Utility Model Content

[0005] The utility model aims to provide a rotary kiln feeding pipe device to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a rotary kiln feeding pipe device, comprising a rotary kiln body and a bottom plate, and also comprising:

[0007] A spiral elevator is installed on one side of the top of the bottom plate, a discharge pipe is arranged below the discharge port of the spiral elevator, a support frame is bolted to the surface of the discharge pipe, a discharge door is installed on the surface of the discharge pipe, and a pouring shell is arranged on the surface of the discharge pipe;

[0008] The tilting and rotating attachment is installed on the surface of the rotary kiln body, the inner wall of the feed pipe is fixedly connected with a partition, the bottom of the feed pipe is connected with a connecting pipe, and the surface of the rotary kiln body is provided with air holes;

[0009] A flipping mechanism is arranged in the inner cavity of the feeding tube, a driving motor is bolted to the bottom of the support frame, a connecting rod is arranged above the inner cavity of the feeding tube, and a wall scraping mechanism is arranged below the connecting rod;

[0010] A connecting mechanism for providing driving force for the wall scraping mechanism, wherein an L-shaped support plate is bolted to one side of the support frame.

[0011] Preferably, the flipping mechanism includes a rotating shaft arranged in the inner cavity of the discharge pipe and spiral blades bolted to the surface of the rotating shaft, the bottom end of the rotating shaft passes through the bottom of the partition and the connecting pipe, and the rotating shaft is rotatably connected to the penetration point of the partition and the connecting pipe, and the output shaft of the drive motor is transmission-connected to the rotating shaft.

[0012] Preferably, the wall scraping mechanism includes an arc-shaped scraper strip bolted to the surface of a connecting rod and a scraper plate fixedly connected to the bottom end of the arc-shaped scraper strip, the arc-shaped scraper strip is slidably connected to the inner wall of the feed tube, and the scraper plate is slidably connected to the top of the partition, the number of the arc-shaped scraper strip and the scraper plate are both two, and the arc-shaped scraper strip and the scraper plate are symmetrically distributed at the center of the feed tube, a link is bolted between the scrapers, and the link is rotatably connected to the surface of the rotating shaft.

[0013] Preferably, the connecting mechanism includes an electric push rod bolted to one side of the L-shaped support plate and a sleeve rotatably connected to the output end of the electric push rod, a clamping rod is bolted to the surface of the rotating shaft, a first clamping groove is provided on the surface of the sleeve, and the first clamping groove is used in conjunction with the clamping rod, and second clamping grooves are provided on both sides of the sleeve surface, and the second clamping grooves are used in conjunction with the connecting rod.

[0014] Preferably, blocks are fixedly connected to both sides of the top of the connecting rod, an annular groove frame is bolted above the inner wall of the discharge pipe, and the block is slidably connected to the inner wall of the annular groove frame.

[0015] Preferably, the number of the clamping rods and the number of the first clamping slots are both two.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The utility model can turn over the material in the feed pipe through the cooperation of the driving motor and the turning mechanism, so that the material can be evenly preheated, thereby ensuring the stability and efficiency of the rotary kiln body for material smelting. At the same time, through the cooperation of the L-shaped support plate, the connecting mechanism and the turning mechanism, the driving force of the driving motor can be transmitted to the scraping mechanism, so that the scraping mechanism can scrape off the material adhered to the inner wall of the feed pipe and the top of the partition, thereby ensuring smooth supply of materials, reducing the cost of subsequent maintenance and repair, and solving the problems of uneven preheating of materials and inconvenience in cleaning adhered materials during the use of the feed pipe of the rotary kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of a local structure in the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the feed pipe and the connecting pipe in the utility model;

[0021] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0022] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the annular groove frame in the utility model.

[0024] In the figure: 1. rotary kiln body; 2. tilting and rotating accessories; 3. connecting pipe; 4. driving motor; 5. partition; 6. air vent; 7. flipping mechanism; 71. rotating shaft; 72. spiral blade; 8. scraping mechanism; 81. arc scraping strip; 82. scraper; 83. chain; 9. connecting mechanism; 91. electric push rod; 92. sleeve; 93. clamping rod; 94. first clamping slot; 95. second clamping slot; 10. L-shaped support plate; 11. clamping block; 12. ring groove frame; 13. bottom plate; 14. spiral elevator; 15. support frame; 16. feeding pipe; 17. discharge door; 18. pouring shell; 19. connecting rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6As shown, a rotary kiln feeding pipe device comprises a rotary kiln body 1 and a bottom plate 13, a spiral elevator 14 is installed on one side of the top of the bottom plate 13, a feeding pipe 16 is arranged below the discharge port at one end of the spiral elevator 14, when in use, the material to be processed can be transported to the inside of the feeding pipe 16 for temporary storage through the spiral elevator 14, a support frame 15 is bolted to the surface of the feeding pipe 16, the support frame 15 is located on the other side of the top of the bottom plate 13, a discharge door 17 is installed on the surface of the feeding pipe 16, a pouring shell 18 is arranged on the surface of the feeding pipe 16 and located on one side of the discharge door 17, the pouring shell 18 corresponds to the position of the rotary kiln body 1 and is used in conjunction with it, the pouring shell 18 is bolted to the support frame 15, and the material in the feeding pipe 16 can be poured when the discharge door 17 is in an open state The material is discharged through the pouring shell 18. The surface of the rotary furnace body 1 is equipped with a tilting and rotating attachment 2. The tilting and rotating attachment 2 can not only rotate the rotary furnace body 1 to achieve the effect of rotary smelting of the material, but also adjust the tilting angle of the rotary furnace body 1, so as to facilitate the input of smelting materials into the rotary furnace body 1, or pour out the materials after smelting in the rotary furnace body 1. Moreover, when the rotary furnace body 1 is in a tilted state, the feed end on one side of the rotary furnace body 1 can correspond to the height of the pouring shell 18 and be connected to each other, so that the material to be smelted temporarily stored in the discharge pipe 16 can be discharged into the rotary furnace body 1 for smelting processing through the discharge door 17 and the pouring shell 18. The four corners of the bottom of the support frame 15 are equipped with car brakes with brake functions. Wheels, a slide groove is provided on the other side of the top of the bottom plate 13, and the support frame 15 can be moved in the slide groove of the bottom plate 13 by its wheels, and the feed pipe 16 can be moved so that the pouring shell 18 and the feeding end of the rotary furnace body 1 can be connected to each other. When smelting materials, the rotary furnace body 1 is first restored to a horizontal state by tilting and rotating the attachment 2, and then the discharge end on the other side of the rotary furnace body 1 is connected to a heating device (a gas burner in the prior art, so it is not shown in the figure) for heating, so that the material in the rotary furnace body 1 can be fully heated and smelted, and the inner wall of the feed pipe 16 is fixedly connected to a partition 5, which can isolate the inner cavity of the feed pipe 16 into two independent spaces, and the inner cavity of the rotary furnace body 1 and located above the partition 5 can be used for smelting. The material support, the bottom of the discharge pipe 16 is connected with a connecting pipe 3, the connecting pipe 3 is used in conjunction with the rotary furnace body 1, when the rotary furnace body 1 is in a horizontal state to melt the material, the feed end on one side thereof can be connected with the connecting pipe 3, and the high-temperature flue gas generated when the material is melted in the rotary furnace body 1 can be discharged to the bottom of the inner cavity of the discharge pipe 16 through the connecting pipe 3 to heat the partition 5, and a plurality of air holes 6 are provided on the surface of the rotary furnace body 1 and below the partition 5, and the air holes 6 can form a ventilated environment below the inner cavity of the discharge pipe 16, thereby preheating the material to be melted temporarily stored on the top of the partition 5, and realizing the recovery and utilization of heat energy, and transferring the heat in the flue gas during smelting to the material to be melted temporarily stored in the discharge pipe 16 through the connecting pipe 3,The energy consumption of the rotary furnace body 1 can be reduced and the speed and efficiency of smelting can be accelerated. The inner cavity of the feeding tube 16 is provided with a flipping mechanism 7. The bottom of the support frame 15 is bolted with a driving motor 4 through a supporting plate. The flipping mechanism 7 is used in conjunction with the driving motor 4 to flip the material in the feeding tube 16, which can not only make the material uniformly subjected to sufficient preheating treatment, but also reduce the volume expansion of the material after being heated in the feeding tube 16, and the agglomeration situation affects the normal discharge of the material in the feeding tube 16. A connecting rod 19 is provided above the inner cavity of the feeding tube 16, and a scraping mechanism 8 is provided below the connecting rod 19. The scraping mechanism 8 can turn the feeding tube 1 6 and the top of the partition 5 that are attached due to the preheating treatment can be scraped off, which can further prevent the material from caking and keep the material fluid. An L-shaped support plate 10 is bolted to one side of the support frame 15. One side of the L-shaped support plate 10 extends to the center of the feed pipe 16. A connecting mechanism 9 is provided at the bottom of one side of the L-shaped support plate 10. The connecting mechanism 9 is used in conjunction with the flipping mechanism 7 to enable the connecting rod 19 to rotate to provide driving force for the operation of the scraping mechanism 8. By utilizing the power transmission of the flipping mechanism 7, no additional power source is needed to reduce the number of equipment used and the complexity of equipment maintenance and operation.

[0027] The flipping mechanism 7 includes a rotating shaft 71, which is located in the inner cavity of the discharge pipe 16. The bottom end of the rotating shaft 71 passes through the bottom of the partition 5 and the connecting pipe 3, and is fixed to each other at the penetration point thereof by a bearing sleeve. The output shaft of the driving motor 4 is connected to the rotating shaft 71 through a meshing gear. A spiral blade 72 is bolted on the surface of the rotating shaft 71 and located above the partition 5. When the driving motor 4 provides power, it can drive the rotating shaft 71 and the spiral blade 72 to rotate, so that the spiral blade 72 can stir the material on the top of the partition 5, and the material can be continuously flipped up and down in the discharge pipe 16, so that the materials in different parts of the discharge pipe 16 can be evenly mixed, avoiding the occurrence of local overheating or overcooling of the materials, thereby improving the uniformity and efficiency of preheating, and also reducing the risk of agglomeration caused by a certain expansion of the volume of the materials after being heated in the discharge pipe 16, thereby helping to ensure the quality and fluidity of the preheating of the materials, and reducing the waste of energy and time.

[0028] The scraper mechanism 8 includes an arc-shaped scraper strip 81, which is bolted to the surface of the connecting rod 19. There are two arc-shaped scraper strips 81, which are symmetrically distributed at the center of the lower material pipe 16. The arc-shaped scraper strip 81 is slidably connected to the inner wall of the lower material pipe 16. The bottom end of the arc-shaped scraper strip 81 is fixedly connected with a scraper plate 82, which is slidably connected to the top of the partition plate 5. A link 83 is bolted between the scrapers 82, and the link 83 is rotatably connected to the surface of the rotating shaft 71. When the connecting rod 19 rotates, it can drive the two arc-shaped scraper strips 81 to rotate and scrape and slide on the inner wall of the lower material pipe 16, so as to scrape off the material adhered to the inner wall of the lower material pipe 16. At this time, the rotating arc-shaped scraper strip 81 can also drive the scraper plate 82 to scrape off the material adhered to the top of the partition plate 5, so as to effectively remove the material adhered and accumulated on the inner wall of the lower material pipe 16 and the top of the partition plate 5, which can ensure The normal flow and discharge of materials maintain the patency of the discharge pipe 16, and by removing the materials attached to their surfaces, the thermal resistance can be reduced and the efficiency of heat energy transfer can be improved, thereby saving the time required for preheating and improving the efficiency of preheating. In addition, through the sliding connection between the link 83 and the rotating shaft 71 and the supporting connection of the scraper 82, a supporting effect can be provided for the bottom of the arc scraper 81, which can enhance its stability in fitting with the inner wall of the discharge pipe 16 during rotation. Blocks 11 are fixedly connected to both sides of the top of the connecting rod 19, and an annular groove frame 12 is bolted above the inner wall of the discharge pipe 16. The block 11 is slidably connected to the inner wall of the annular groove frame 12. Under the limitation of the shapes of the block 11 and the annular groove frame 12 themselves, the stability of the arc scraper 81 in fitting with the inner wall of the discharge pipe 16 during rotation and scraping can be further improved, thereby improving the scraping effect of the arc scraper 81 on the material.

[0029] The connecting mechanism 9 includes an electric push rod 91, the top of which is bolted to the bottom of one side of the L-shaped support plate 10, and the output end of the electric push rod 91 is rotatably connected to a sleeve 92, which corresponds to the position of the rotating shaft 71 and is used in conjunction with it. A clamping rod 93 is bolted to both sides above the surface of the rotating shaft 71, and both sides of the surface of the sleeve 92 are provided with a first clamping groove 94, which is used in conjunction with the clamping rod 93. When the output end of the electric push rod 91 is extended, the sleeve 92 can be driven to move downward, so that its inner wall can contact the surface of the rotating shaft 71, and the clamping rod 93 can be clamped into the inner wall of the first clamping groove 94. When the driving motor 4 drives the rotating shaft 71 to rotate, the first clamping groove 94 and the clamping rod 93 are clamped, so that the sleeve 92 can rotate synchronously with the rotating shaft 71. Second slots 95 are provided on both sides of the surface of the sleeve 92, and the second slots 95 are used in conjunction with the connecting rod 19. When the sleeve 92 moves downward to allow the locking rod 93 to be locked into the first slot 94, the connecting rod 19 will also be locked into the second slot 95 accordingly. At this time, the rotational power of the rotating shaft 71 can be transmitted to the connecting rod 19 through the locking connection between the second slot 95 and the connecting rod 19, so that the connecting rod 19 can drive the arc-shaped scraper 81 to rotate to scrape the material adhered to the discharge pipe 16. When the material is preheated and there is no need to scrape the material, it is only necessary to retract the output end of the electric push rod 91 to move the sleeve 92 upward, so that the locking rod 93 and the connecting rod 19 can be disengaged from the first slot 94 and the second slot 95 respectively, and the driving force provided to the scraping mechanism 8 can be released.

[0030] It is worth noting that the tilting and rotating attachment 2 proposed in this technical solution is a prior art, which can not only rotate the rotary kiln body 1 but also adjust the tilting angle of the rotary kiln body 1 when in use. The working principle and beneficial effects when in use are not described in detail here.

[0031] Working principle: First, the material to be smelted is continuously thrown into the discharge pipe 16 through the spiral elevator 14, so that the material is on the top of the partition 5, and then the rotary furnace body 1 is tilted by the tilting and rotating accessory 2, so that its feeding end and the discharge shell 18 are connected to each other, and then the discharge door 17 is opened to allow the material to be discharged into the rotary furnace body 1 through the discharge shell 18, and then the rotary furnace body 1 is restored to a horizontal state, so that the connecting pipe 3 and the rotary furnace body 1 are connected to each other. Next, the rotary furnace body 1 is connected to the heating device to melt the material. In this process, the connecting pipe 3 can discharge the high-temperature flue gas in the rotary furnace body 1 through the connecting pipe 3 to the discharge pipe 16, and the material to be smelted can be preheated. At this time, the drive motor 4 is started to drive the rotating shaft 71 and the spiral blade 72 to rotate, so that the spiral blade 7 2. Turning the materials can improve the uniformity and efficiency of material preheating. In addition, when it is necessary to clean the materials on the inner wall of the feeding tube 16 and the partition 5, the driving motor 4 is used to drive the rotating shaft 71 to rotate, and then the electric push rod 91 is started to drive the sleeve 92 to move downward, so that the clamping rod 93 is clamped into the first clamping groove 94, and the connecting rod 19 is clamped into the second clamping groove 95. The sleeve 92 can be used to make the connecting rod 19 and the rotating shaft 71 rotate synchronously, and the rotating connecting rod 19 can drive the arc scraper 81 to rotate to scrape off the materials adhered to the inner wall of the feeding tube 16. At this time, the rotating arc scraper 81 will drive the scraper 82 to scrape off the materials adhered to the top of the partition 5. Based on this, the materials adhered and accumulated on the inner wall of the feeding tube 16 and the top of the partition 5 can be effectively removed, thereby ensuring the normal flow and discharge of the materials.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln feeding pipe device, comprising a rotary kiln body (1) and a bottom plate (13), characterized in that: Also includes: A spiral elevator (14) is installed on one side of the top of the bottom plate (13), a discharge pipe (16) is arranged below the discharge port of the spiral elevator (14), a support frame (15) is bolted to the surface of the discharge pipe (16), a discharge door (17) is installed on the surface of the discharge pipe (16), and a pouring shell (18) is arranged on the surface of the discharge pipe (16); An inclined rotating attachment (2) is installed on the surface of a rotary kiln body (1); a partition (5) is fixedly connected to the inner wall of the feed tube (16); a connecting pipe (3) is provided at the bottom of the feed tube (16); and a vent hole (6) is provided on the surface of the rotary kiln body (1); A flipping mechanism (7) is arranged in the inner cavity of the feeding tube (16); a driving motor (4) is bolted to the bottom of the support frame (15); a connecting rod (19) is arranged above the inner cavity of the feeding tube (16); and a wall scraping mechanism (8) is arranged below the connecting rod (19); A connecting mechanism (9) is used to provide driving force for a wall scraping mechanism (8), and an L-shaped support plate (10) is bolted to one side of the support frame (15).

2. A rotary kiln feeding pipe device according to claim 1, characterized in that: The flipping mechanism (7) comprises a rotating shaft (71) arranged in the inner cavity of the feeding tube (16) and a spiral blade (72) bolted to the surface of the rotating shaft (71); the bottom end of the rotating shaft (71) passes through the bottom of the partition (5) and the connecting tube (3), and the rotating shaft (71) is rotatably connected to the penetration point of the partition (5) and the connecting tube (3); the output shaft of the driving motor (4) is transmission-connected to the rotating shaft (71).

3. A rotary kiln feeding pipe device according to claim 2, characterized in that: The wall scraping mechanism (8) comprises an arc-shaped scraping strip (81) bolted to the surface of the connecting rod (19) and a scraper plate (82) fixedly connected to the bottom end of the arc-shaped scraping strip (81); the arc-shaped scraping strip (81) is slidably connected to the inner wall of the feed tube (16); the scraper plate (82) is slidably connected to the top of the partition (5); the number of the arc-shaped scraping strip (81) and the scraper plate (82) are both two, and the arc-shaped scraping strip (81) and the scraper plate (82) are symmetrically distributed at the center of the feed tube (16); a link (83) is bolted between the scrapers (82), and the link (83) is rotatably connected to the surface of the rotating shaft (71).

4. A rotary kiln feeding pipe device according to claim 2, characterized in that: The connecting mechanism (9) comprises an electric push rod (91) bolted to one side of the L-shaped support plate (10) and a sleeve (92) rotatably connected to the output end of the electric push rod (91); a clamping rod (93) is bolted to the surface of the rotating shaft (71); a first clamping groove (94) is provided on the surface of the sleeve (92); the first clamping groove (94) is used in conjunction with the clamping rod (93); second clamping grooves (95) are provided on both sides of the surface of the sleeve (92); the second clamping grooves (95) are used in conjunction with the connecting rod (19).

5. The rotary kiln feeding pipe device according to claim 1, characterized in that: Blocks (11) are fixedly connected to both sides of the top of the connecting rod (19), and a ring groove frame (12) is bolted above the inner wall of the discharge pipe (16), and the block (11) is slidably connected to the inner wall of the ring groove frame (12).

6. A rotary kiln feeding pipe device according to claim 4, characterized in that: The number of the clamping rod (93) and the number of the first clamping slot (94) are both two.

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