Energy-saving rotary kiln

Abstract

The utility model relates to the technical field of rotary kilns, in particular to an energy-saving rotary kiln. Comprising a kiln body rotationally arranged on a plurality of supporting blocks, a feeding pipe is arranged at one end of the kiln body, a discharging bin is arranged at the other end of the kiln body, the discharging bin and the feeding pipe are fixedly communicated with the same gas guide pipe, and the end, located in the discharging bin, of the gas guide pipe is fixedly communicated with a flow guide cover; a gas guide pipe is arranged in the kiln body, a fan and a filter box are arranged on the gas guide pipe, a plurality of electromagnetic coil groups are fixedly arranged on the kiln body in a sleeving manner, an opening is formed in one side of the filter box, a rectangular frame is mounted in the filter box in a sliding manner, a filter element is fixedly mounted in the rectangular frame, and a cover plate is arranged on one side of the rectangular frame. Through a simple locking structure, high-temperature flue gas generated by the rotary kiln can be conveniently and effectively filtered to remove dust, meanwhile, the filtered dust can be conveniently and rapidly cleaned, the problem of blockage of a smoke exhaust pipeline can be effectively prevented, and recycling of preheated flue gas is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to an energy-saving rotary kiln. Background Art

[0002] A rotary kiln refers to a rotating calcining kiln. It can be divided into cement kilns, metallurgical chemical kilns and lime kilns according to the materials processed. Cement kilns are mainly used to calcine cement clinker, while metallurgical chemical kilns are mainly used in the metallurgical industry to magnetize and roast chromium from lean iron ores in steel plants, oxidize and roast nickel-iron ores, roast high-alumina vanadium ores in refractory plants, roast clinker in aluminum plants, and roast chromium ore sand and chromium ore powder in aluminum hydroxide chemical plants. The current energy-saving rotary kiln generally uses high-temperature flue gas waste heat recovery to save energy this year, which can effectively preheat the material, thereby increasing the heat efficiency. In order to improve the efficiency, the prior art discloses an energy-saving cement rotary kiln with the authorization announcement number CN113587631A, which includes a kiln body, a first base, a second base, a third base and a feed bin, the top of the first base is fixedly connected with a motor and a reduction gearbox, the motor is transmission-connected with the reduction gearbox, the reduction gearbox is transmission-connected with a driving gear, the kiln body is transmission-connected with the driving gear through a driven gear, the top of the second base is fixedly connected with two groups of mounting seats, and each group of mounting seats is connected with a bearing through a connecting shaft. The present invention can effectively bring the heat of the high-temperature gas back to the pool through the liquid by using the hose and submersible pump in the waste heat recovery mechanism, and transfer the heat to the feed bin, and the airbag next to the hose will squeeze the hose under high temperature conditions, increase the contact area between the hose and the exhaust pipe, speed up the flow rate of the liquid in the hose, further increase the collection of the heat of the high-temperature gas, so that more heat can be transferred to the feed bin.

[0003] However, it was found during use that the above design is not convenient for filtering and cleaning smoke dust in high-temperature flue gas, which can easily lead to blockage of the smoke exhaust duct and is not conducive to the recovery of waste heat from the flue gas. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an energy-saving rotary kiln, which is convenient for effectively filtering and removing dust from the high-temperature flue gas generated by the rotary kiln, and for quickly cleaning the filtered dust, and can effectively prevent the problem of blockage of the smoke exhaust pipe, which is conducive to the recycling of preheated flue gas and solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows: an energy-saving rotary kiln, comprising a kiln body rotatably arranged on a plurality of support blocks, a feed pipe is arranged at one end of the kiln body, a discharge bin is arranged at the other end of the kiln body, the discharge bin and the feed pipe are fixedly connected with the same air guide pipe, one end of the air guide pipe located in the discharge bin is fixedly connected with a guide cover, a fan and a filter box are arranged on the air guide pipe, a plurality of electromagnetic coil groups are fixedly sleeved on the kiln body, one side of the filter box is an opening, a rectangular frame is slidably installed in the filter box, a filter element is fixedly installed in the rectangular frame, a cover plate is arranged on one side of the rectangular frame, the cover plate is adapted to the opening of the filter box, a card slot 1 is provided on the top and bottom inner walls of the filter box, a card slot 1 is slidably installed in the card slot 1, two slide slots are provided on the side of the cover plate away from the filter element, a pull plate and a spring are slidably installed in the slide slot, one end of the card rod extends into the corresponding slide slot and is welded to the pull plate, and the ends of the two springs away from each other are respectively in contact with the corresponding pull plates.

[0006] To facilitate quick filter replacement:

[0007] As a further improvement of the above technical solution: the cover plate also includes two card slots 2, a card plate is slidably installed in the card slots 2, four plug rods are slidably penetrated on the card plate, the card plate is fixed to one side of the rectangular frame, a groove is opened on one side of the cover plate, two slides are slidably installed in the groove, one end of the plug rod extends into the groove and is welded to the corresponding slide, the two slides are threaded with the same bidirectional screw rod, a first bevel gear is fixedly sleeved on the bidirectional screw rod, a rotating rod is rotatably installed on the side of the cover plate away from the filter element, one end of the rotating rod extends into the groove and is fixedly installed with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0008] The beneficial effect of this improvement is that, through such an arrangement, the filter element can be quickly assembled and disassembled, and then the filter element can be quickly replaced, which is beneficial to ensuring the filtering effect on flue gas dust.

[0009] To prevent air leakage from the filter box:

[0010] As a further improvement of the above technical solution: a first through hole is penetrated on the inner wall of one side of the slide groove, the clamping rod slides through the first through hole, a sealing ring is fixedly installed in the filter box, and the cover plate and the rectangular frame are both slidably connected to the inner wall of the sealing ring.

[0011] The beneficial effect of this improvement is that by providing a sealing ring, air leakage of the filter box can be prevented.

[0012] To prevent the spring from bending:

[0013] As a further improvement of the above technical solution: two limit rods are fixedly installed in the slide groove, the limit rods slide through the pull plate, and the spring is slidably sleeved on the corresponding limit rods.

[0014] The beneficial effect of this improvement is that by setting a limiting rod, it is convenient to limit the pull plate and the spring to prevent the spring from bending.

[0015] In order to facilitate the support and limit of the bidirectional screw:

[0016] As a further improvement of the above technical solution: two transverse plates are fixedly installed in the groove, and the bidirectional screw rod rotates and passes through the two transverse plates.

[0017] The beneficial effect of this improvement is that by providing a transverse plate, it is convenient to support and limit the bidirectional screw rod.

[0018] In order to facilitate the support and limit of the rotating rod:

[0019] As a further improvement of the above technical solution: a second through hole is penetrated on the inner wall of the groove on the side away from the filter element, and the rotating rod rotates and penetrates the second through hole.

[0020] The beneficial effect of this improvement is that by providing the second through hole, it is convenient to support and limit the rotating rod.

[0021] In order to facilitate the insertion of the rod to lock the card:

[0022] As a further improvement of the above technical solution: four third through holes are penetrated on the top and bottom inner walls of the groove, four fourth through holes are penetrated on the card plate, and the insertion rod slides through the corresponding third through holes and fourth through holes.

[0023] The beneficial effect of this improvement is that by providing the fourth through hole, it is convenient for the insertion rod to lock the clamping plate.

[0024] The beneficial effects of the utility model are as follows: through a simple locking structure, the high-temperature flue gas generated by the rotary kiln can be effectively filtered to remove dust, and the filtered dust can be quickly cleaned, which can effectively prevent the problem of clogging of the smoke exhaust pipe and is conducive to the recycling of preheated flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0026] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0027] Figure 3It is a side cross-sectional structural schematic diagram of the filter box in the utility model;

[0028] Figure 4 It is a schematic diagram of the three-dimensional assembly structure of the filter box and two clamping plates in the utility model;

[0029] Figure 5 For this utility model Figure 3 A schematic diagram of the enlarged structure of part B;

[0030] Figure 6 For this utility model Figure 3 Schematic diagram of the enlarged structure of part C.

[0031] In the figure: 1. support block; 2. kiln body; 3. feed pipe; 4. discharge bin; 5. air duct; 6. air deflector; 7. fan; 8. electromagnetic coil group; 9. filter box; 10. rectangular frame; 11. filter element; 12. cover plate; 13. slot 1; 14. clamping rod; 15. slide groove; 16. pull plate; 17. spring; 18. slot 2; 19. clamping plate; 20. plug rod; 21. groove; 22. slide plate; 23. bidirectional screw; 24. first bevel gear; 25. rotating rod; 26. second bevel gear. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0033] like Figure 1-6As shown, an energy-saving rotary kiln comprises a kiln body 2 rotatably arranged on a plurality of support blocks 1, a feed pipe 3 is arranged at one end of the kiln body 2, a discharge bin 4 is arranged at the other end of the kiln body 2, an air guide pipe 5 is fixed and connected to the discharge bin 4 and the feed pipe 3, one end of the air guide pipe 5 located in the discharge bin 4 is fixed and connected to a guide cover 6, a fan 7 and a filter box 9 are arranged on the air guide pipe 5, a plurality of electromagnetic coil groups 8 are fixedly sleeved on the kiln body 2, one side of the filter box 9 is an opening, a rectangular frame 10 is slidably installed in the filter box 9, a filter element 11 is fixedly installed in the rectangular frame 10, a cover plate 12 is arranged on one side of the rectangular frame 10, the cover plate 12 is adapted to the opening of the filter box 9, and the top and bottom of the filter box 9 are provided with a plurality of electromagnetic coil groups 8. A card slot 13 is provided on the wall, and a card rod 14 is slidably installed in the card slot 13. Two slide slots 15 are provided on the side of the cover plate 12 away from the filter element 11. A pull plate 16 and a spring 17 are slidably installed in the slide slot 15. One end of the card rod 14 extends into the corresponding slide slot 15 and is welded to the pull plate 16. The ends of the two springs 17 that are away from each other are respectively in contact with the corresponding pull plates 16. Through a simple locking structure, it is convenient to effectively filter and remove dust from the high-temperature flue gas generated by the rotary kiln, and at the same time, it is convenient to quickly clean the filtered dust, which can effectively prevent the problem of blockage of the smoke exhaust pipe and is conducive to the recycling of smoke preheating. The cover plate 12 also includes two card slots 18, and a card plate is slidably installed in the card slot 18 19, four plug rods 20 are slidably penetrated on the card plate 19, the card plate 19 is fixed on one side of the rectangular frame 10, a groove 21 is opened on one side of the cover plate 12, two slide plates 22 are slidably installed in the groove 21, one end of the plug rod 20 extends into the groove 21 and is welded on the corresponding slide plate 22, and the two slide plates 22 are threaded with the same bidirectional screw rod 23, and the bidirectional screw rod 23 is fixedly sleeved with a first bevel gear 24, and a rotating rod 25 is rotatably installed on the side of the cover plate 12 away from the filter element 11, one end of the rotating rod 25 extends into the groove 21 and is fixedly installed with a second bevel gear 26, and the second bevel gear 26 is meshed with the first bevel gear 24. Through such an arrangement, it is convenient to quickly install the filter element 11 The filter element 11 can be quickly replaced by disassembly, which is beneficial to ensure the filtering effect of smoke dust. A first through hole is penetrated on the inner wall of one side of the slide groove 15. The clamping rod 14 slides through the first through hole. A sealing ring is fixedly installed in the filter box 9. The cover plate 12 and the rectangular frame 10 are slidably connected to the inner wall of the sealing ring. By setting the sealing ring, the filter box 9 can be prevented from leaking. Two limit rods are fixedly installed in the slide groove 15. The limit rod slides through the pull plate 16. The spring 17 is slidably sleeved on the corresponding limit rod. By setting the limit rod, it is convenient to limit the pull plate 16 and the spring 17 to prevent the spring 17 from bending. Two cross plates are fixedly installed in the groove 21. The two-way screw rod 23 rotates and penetrates the two cross plates.By setting the horizontal plate, it is convenient to support and limit the bidirectional screw rod 23. The inner wall of the groove 21 away from the filter element 11 is penetrated by a second through hole. The rotating rod 25 rotates through the second through hole. By setting the second through hole, it is convenient to support and limit the rotating rod 25. The top and bottom inner walls of the groove 21 are penetrated by four third through holes. The card plate 19 is penetrated by four fourth through holes. The insertion rod 20 slides through the corresponding third and fourth through holes. By setting the fourth through hole, it is convenient for the insertion rod 20 to lock the card plate 19.

[0034] The working principle of the utility model is as follows: when in use, the electromagnetic coil group 8 and the kiln body 2 are turned on, the kiln body 2 rotates and is heated at the same time, and then the raw materials are put into the kiln body 2 through the feed pipe 3, the raw materials enter the kiln body 2 and are heated and calcined, and the clinker is discharged through the discharge bin 4, and the fan 7 is turned on at the same time, so that the high-temperature flue gas in the discharge bin 4 enters the air guide pipe 5 through the guide cover 6, and the flue gas in the air guide pipe 5 passes through the filter box 9 and is filtered out of smoke and dust by the filter element 11, and the high-temperature gas continues to flow through the fan 7 and then enters the feed pipe 3 to irrigate the raw materials. When the dust accumulated on the filter element 11 needs to be cleaned, the two pull plates 16 are first pulled, so that the pull plates 16 are driven to slide in the corresponding slide grooves 15, the springs 17 are compressed, and at the same time, the pull plates 16 drive the clamping rods 14 to slide out of the clamping grooves 13, so that the fixing of the cover plate 12 is released, and then the cover plate 12 is pulled, so that the rectangular frame 10 is slid out of the filter box 9, and the filter element 11 is taken out, and then the dust on the filter element 11 can be cleaned. By setting it in this way, The filter element 11 is then removed from the filter element 11 and the filter element 11 is then replaced.

[0035] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. An energy-saving rotary kiln, comprising a kiln body (2) rotatably arranged on a plurality of support blocks (1), a feed pipe (3) being provided at one end of the kiln body (2), and a discharge bin (4) being provided at the other end of the kiln body (2), characterized in that: The discharge bin (4) and the feed pipe (3) are fixed with and connected to the same air guide pipe (5); one end of the air guide pipe (5) located in the discharge bin (4) is fixed with and connected to a guide cover (6); a fan (7) and a filter box (9) are provided on the air guide pipe (5); a plurality of electromagnetic coil groups (8) are fixedly sleeved on the kiln body (2); one side of the filter box (9) is open; a rectangular frame (10) is slidably mounted in the filter box (9); a filter element (11) is fixedly mounted in the rectangular frame (10); a cover plate (12) is provided on one side of the rectangular frame (10); and the cover plate (12) is provided on one side of the rectangular frame (10). The plate (12) is adapted to fit the opening of the filter box (9), and a card slot (13) is provided on the inner wall of the top and bottom of the filter box (9), and a card rod (14) is slidably installed in the card slot (13). Two slide slots (15) are provided on the side of the cover plate (12) away from the filter element (11), and a pull plate (16) and a spring (17) are slidably installed in the slide slot (15), one end of the card rod (14) extends into the corresponding slide slot (15) and is welded to the pull plate (16), and the ends of the two springs (17) that are away from each other are in contact with the corresponding pull plates (16) respectively.

2. An energy-saving rotary kiln according to claim 1, characterized in that: The cover plate (12) further comprises two second card slots (18), in which a card plate (19) is slidably mounted, and four insertion rods (20) are slidably penetrated on the card plate (19), and the card plate (19) is fixed to one side of the rectangular frame (10). A groove (21) is provided on one side of the cover plate (12), and two slide plates (22) are slidably mounted in the groove (21), one end of the insertion rod (20) extends into the groove (21) and is welded to the corresponding slide plate (22), and a same bidirectional screw rod (23) is threadedly penetrated on the two slide plates (22), and a first bevel gear (24) is fixedly sleeved on the bidirectional screw rod (23), and a rotating rod (25) is rotatably mounted on the side of the cover plate (12) away from the filter element (11), one end of the rotating rod (25) extends into the groove (21) and is fixedly mounted with a second bevel gear (26), and the second bevel gear (26) is meshed with the first bevel gear (24).

3. An energy-saving rotary kiln according to claim 1, characterized in that: A first through hole is penetrated on the inner wall of one side of the slide groove (15), the clamping rod (14) slides through the first through hole, a sealing ring is fixedly installed in the filter box (9), and the cover plate (12) and the rectangular frame (10) are both slidably connected to the inner wall of the sealing ring.

4. The energy-saving rotary kiln according to claim 1, characterized in that: Two limit rods are fixedly installed in the slide groove (15), the limit rods slide through the pull plate (16), and the spring (17) is slidably sleeved on the corresponding limit rods.

5. The energy-saving rotary kiln according to claim 2, characterized in that: Two transverse plates are fixedly mounted in the groove (21), and the bidirectional screw rod (23) rotates and passes through the two transverse plates.

6. An energy-saving rotary kiln according to claim 2, characterized in that: A second through hole is penetrated on the inner wall of the groove (21) at a side away from the filter element (11), and the rotating rod (25) rotates to penetrate the second through hole.

7. An energy-saving rotary kiln according to claim 2, characterized in that: Four third through holes are penetrated on the top and bottom inner walls of the groove (21), four fourth through holes are penetrated on the clamping plate (19), and the insertion rod (20) slides through the corresponding third through holes and fourth through holes.

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