Cement kiln tail preheating device for producing acid from ardealite and co-producing cement kiln tail

Abstract

The utility model discloses a tail preheating device of a co-production cement kiln for preparing acid from ardealite, which relates to the technical field of tail preheating of the co-production cement kiln for preparing acid from ardealite and comprises a crushing box and a feed pipe arranged at the top end of the crushing box, an air pipe is arranged at the bottom end of the crushing box, and a cyclone is arranged at the bottom end of the air pipe. Under the synergistic effect of the two crushing rods and the scraping plate, the falling raw materials are efficiently crushed, meanwhile, when the first crushing rod rotates, the scraping plate rotates along with the first crushing rod to scrape the sublimed sulfur on the inner wall of the cyclone cylinder, and a connecting plate scrapes the sublimed sulfur on the inner wall of an air pipe. The double scraping mechanism effectively prevents sublimed sulfur from depositing and reduces the risk of equipment blockage, and meanwhile, when the scraping plate works, the second crushing rod also performs secondary crushing on the raw materials, so that favorable conditions are created for further optimizing granularity and subsequently preheating and calcining, and the efficiency and effect of the technological process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to phosphogypsum acid production co-production cement kiln tail preheating technical field, concretely is a kind of phosphogypsum acid production co-production cement kiln tail preheating device. BACKGROUND

[0002] Phosphogypsum belongs to large industrial waste residue, and its main component is calcium sulfate, which widely exists in the process of phosphate fertilizer production. However, the treatment and utilization of phosphogypsum has been facing many challenges, such as serious environmental pollution caused by improper disposal. In recent years, the technology of producing acid and cement from phosphogypsum has received extensive attention. This method can effectively utilize the resources in phosphogypsum, reduce environmental pollution and improve resource utilization.

[0003] However, the existing equipment cannot effectively process the deposits in the cyclone cylinder while performing the crushing task in the material spreading box in the scenario of phosphogypsum acid production co-production cement preheating. This design flaw can cause the deposition of sulfur in the cyclone cylinder to change from periodic cleaning to irregular or even long-term accumulation, which may eventually lead to serious blockage and performance degradation of the equipment. Therefore, there is an urgent need for a comprehensive device that can perform both crushing and deposit scraping to improve the overall efficiency and stability of the phosphogypsum acid production co-production cement system. SUMMARY

[0004] The purpose of the utility model is to provide a phosphogypsum acid production co-production cement kiln tail preheating device to solve the problems raised in the background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a phosphogypsum acid production co-production cement kiln tail preheating device, comprising a crushing box and a feed pipe arranged at the top end of the crushing box, a wind pipe is arranged at the bottom end of the crushing box, a cyclone cylinder is arranged at the bottom end of the wind pipe,

[0006] A crushing and scraping assembly is arranged at the top end of the crushing box to scrape the deposited sublimed sulfur while crushing the raw materials.

[0007] The crushing and scraping assembly comprises a mounting seat arranged at the top end of the crushing box, a motor is mounted on the inner wall of the mounting seat, a rotating shaft is connected to the output end of the motor and fixedly connected to the inner wall of the feed pipe, the other end of the rotating shaft is rotatably connected to the inner wall of the feed pipe, a first gear is fixedly connected to the outer wall of the rotating shaft, a second gear is connected to the first gear, a rotating rod is arranged at the bottom end of the second gear, a first crushing rod is arranged on the outer wall of the rotating rod, a connecting rod is fixedly connected to the bottom end of the rotating rod, a scraper is arranged on both sides of the connecting rod, a limiting groove is formed on one side of the outer wall of the scraper, a sliding rail is slidably connected to the inner wall of the limiting groove, and the sliding rail is arranged on the inner wall of the cyclone cylinder.

[0008] As a specific solution of the technical scheme of the present application, a second crushing rod is arranged on the other side of the outer wall of the scraper.

[0009] As a specific scheme of the technical scheme of the application, the outer wall of the rotating rod is rotationally connected with a material scattering plate.

[0010] As a specific scheme of the technical scheme of the application, the outer wall of the material scattering plate is fixedly connected with the inner wall of the crushing box.

[0011] As a specific scheme of the technical scheme of the application, a material scattering hole is formed in the top end of the material scattering plate.

[0012] As a specific scheme of the technical scheme of the application, the inner wall of the connecting position between the crushing box and the air pipe is arranged in a slope.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] The phosphogypsum acid production co-production cement kiln tail preheating device, through the synergistic effect of the two crushing rods and the scraping plates, the dropped raw materials are efficiently crushed, and when the first crushing rod rotates, the scraping plates rotate to scrape the sublimed sulfur in the inner wall of the cyclone cylinder, and the connecting plates scrape the sublimed sulfur in the inner wall of the air pipe. This double scraping mechanism effectively prevents the deposition of sublimed sulfur, reduces the risk of equipment blockage, significantly improves the stability of the equipment operation, and at the same time, when the scraping plates work, the second crushing rod also performs secondary crushing on the raw materials, further optimizes the particle size, creates favorable conditions for subsequent preheating and calcination, and improves the efficiency and effect of the process flow. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the application;

[0016] Figure 2 It is a sectional structure schematic diagram of the crushing and removing assembly of the application;

[0017] Figure 3 It is a sectional structure schematic diagram of the crushing and removing assembly of the application;

[0018] Figure 4 It is a sectional structure schematic diagram of the crushing and removing assembly of the application; Figure 3 It is an enlarged schematic diagram of the transmission structure A of the crushing and removing assembly of the application.

[0019] In the figure: 1, crushing box; 2, feeding pipe; 3, air pipe; 4, cyclone cylinder; 5, crushing and scraping assembly; 501, motor; 502, material scattering plate; 503, material scattering hole; 504, slope; 505, sliding rail; 506, rotating rod; 507, first crushing rod; 508, connecting rod; 509, scraping plate; 510, second crushing rod; 511, limiting groove; 512, rotating shaft; 513, first gear; 514, second gear. DETAILED DESCRIPTION

[0020] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0021] It should be noted that, in the description of the present application, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, it should be understood that, for the convenience of description, the sizes of various components shown in the drawings are not drawn in accordance with the actual proportional relationship, for example, the thickness or width of certain layers can be exaggerated relative to other layers.

[0023] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not need to be further specifically discussed and described in the description of subsequent drawings.

[0024] As shown in Figures 1-4 The present application comprises a crushing box 1 and a feed pipe 2 arranged at the top end of the crushing box 1, a wind pipe 3 arranged at the bottom end of the crushing box 1, a cyclone 4 arranged at the bottom end of the wind pipe 3, and a crushing and scraping assembly 5 arranged at the top end of the crushing box 1, which is used for scraping the deposited sublimed sulfur while crushing the raw materials, achieving the cooperative operation of crushing and scraping, and reducing the time and labor cost of separate operation.

[0025] As shown in Figures 1-4As shown, in order to scrape the deposited sublimated sulfur while crushing the raw materials, the cooperation of crushing and scraping is realized, the time and labor cost of separate operation is reduced, a crushing and scraping assembly 5 is arranged on the top end of the crushing box 1, specifically, the crushing and scraping assembly 5 comprises a mounting seat, the mounting seat is arranged on the top end of the crushing box 1, a motor 501 is arranged on the inner wall of the mounting seat, the output end of the motor 501 penetrates through the inner wall of the feeding pipe 2 and is fixedly connected with a rotating shaft 512, the other end of the rotating shaft 512 is rotatably connected with the inner wall of the feeding pipe 2, the outer wall of the rotating shaft 512 is fixedly connected with a first gear 513, the first gear 513 is meshedly connected with a second gear 514, the bottom end of the second gear 514 is provided with a rotating rod 506, the outer wall of the rotating rod 506 is provided with a first crushing rod 507, the bottom end of the rotating rod 506 is fixedly connected with a connecting rod 508, the bottom ends of the two sides of the connecting rod 508 are provided with scraping plates 509, the outer wall of one side of the scraping plate 509 is provided with a limiting groove 511, the inner wall of the limiting groove 511 is slidably connected with a sliding rail 505, the sliding rail 505 is arranged on the inner wall of the cyclone 4, the outer wall of the other side of the scraping plate 509 is provided with a second crushing rod 510, the outer wall of the rotating rod 506 is rotatably connected with a scattering plate 502, the outer wall of the scattering plate 502 is fixedly connected with the inner wall of the crushing box 1, the top end of the scattering plate 502 is provided with a scattering hole 503, the inner wall of the connecting place of the crushing box 1 and the air pipe 3 is provided with a slope 504, it needs to be clear that in the embodiment of the application, the motor 501 serves as the power source of the crushing and scraping assembly 5, the output end of the motor 501 penetrates through the inner wall of the feeding pipe 2 and is fixedly connected with the rotating shaft 512, the other end of the rotating shaft 512 is rotatably connected with the inner wall of the feeding pipe 2, when the raw materials enter the inside of the crushing box 1 through the feeding pipe 2, the motor 501 on the mounting seat is started to drive the rotating shaft 512 to rotate in the protection box, so that the first gear 513 on the outer wall of the rotating shaft 512 rotates, the first gear 513 meshes with the second gear 514 during the rotation process, so as to drive the second gear 514 to rotate, the rotating rod 506 on the outer wall of the rotating rod 506 rotates, and the first crushing rod 507 on the outer wall of the rotating rod 506 rotates in the crushing box 1, so as to crush the falling raw materials and make the particle size of the raw materials uniform, which can reduce the dust flying phenomenon caused by material accumulation or sulfur deposition, the crushed raw materials fall into the inside of the air pipe 3 and the cyclone 4 through the scattering hole 503 on the top end of the scattering plate 502, the inner wall of the connecting place of the crushing box 1 and the air pipe 3 is provided with a slope 504, which is helpful for the crushed raw materials to smoothly fall into the inside of the air pipe 3 and the cyclone 4, reduces the accumulation of raw materials at the connecting place, improves the preheating efficiency, it also needs to be clear that in the embodiment of the application, when the raw materials after once crushing fall into the inside of the air pipe 3 and the cyclone 4, the connecting plate rotates with the rotating rod 506, so that the scraping plate 509 rotates along the outer wall of the sliding rail 505 through the limiting groove 511 on one side of the outer wall, so as to scrape the sublimated sulfur on the inner wall of the cyclone 4, at the same time, the connecting plate also scrapes the sublimated sulfur on the inner wall of the air pipe 3,The sublimated sulfur on the inner wall of the cyclone barrel 4 and the air pipe 3 is effectively prevented from depositing, the risk of equipment blockage is reduced, the operation stability of the equipment is improved, while the scraping plate 509 scrapes the sublimated sulfur on the inner wall of the cyclone barrel 4, the second crushing rod 510 performs secondary crushing on the raw materials in the cyclone barrel 4, so that the raw materials are crushed twice, the particle size is more uniform, and the subsequent preheating and calcination processes are facilitated.

[0026] When the preheating treatment is needed for the phosphogypsum acid production and cement production, the raw materials enter the crushing box 1 through the feeding pipe 2, then the motor 501 drives the rotating shaft 512 to rotate, so that the first gear 513 on the outer wall of the rotating shaft 512 rotates, the first gear 513 meshes with the second gear 514 during rotation, so that the second gear 514 rotates, the rotating rod 506 at the bottom end of the second gear 514 rotates, and the first crushing rod 507 on the outer wall of the rotating rod 506 rotates in the crushing box 1 to crush the falling raw materials, the crushed raw materials fall into the air pipe 3 and the cyclone barrel 4 through the scattering holes 503 on the scattering plate 502, the inner wall of the connection part of the crushing box 1 and the air pipe 3 is provided with a slope 504, which helps to reduce the accumulation of raw materials at the connection part, when the crushed raw materials fall into the air pipe 3 and the cyclone barrel 4, the connecting plate rotates with the rotating rod 506, so that the scraping plate 509 rotates along the outer wall of the slide rail 505 through the limiting slot 511 on one side, so as to scrape the sublimated sulfur on the inner wall of the cyclone barrel 4, and the connecting plate also scrapes the sublimated sulfur on the inner wall of the air pipe 3, effectively preventing the equipment from being blocked, while the scraping plate 509 scrapes the sublimated sulfur on the inner wall of the cyclone barrel 4, the second crushing rod 510 performs secondary crushing on the raw materials in the cyclone barrel 4, so that the raw materials are crushed twice, and the particle size is more uniform.

[0027] The utility model discloses a crushing box 1 and the feed pipe 2 of setting at the top end of crushing box 1, the bottom of crushing box 1 is equipped with the air pipe 3, and the bottom of air pipe 3 is equipped with cyclone 4, and the broken scraping subassembly 5 is set at the top end of crushing box 1 for scraping the deposition of sublimed sulfur while crushing raw materials, realizes the cooperative operation of crushing and scraping, reduces the time and manpower cost of separate operation. The utility model discloses through the synergies of two broken pole and scraping board 509, make the raw material that falls to have obtained the effective broken processing, and the granularity becomes more uniform, simultaneously, when the first broken pole 507 rotates and crushes, scraping board 509 rotates with the sublimed sulfur in the inner wall of cyclone 4 and is scraped, and the connecting plate is scraped to the sublimed sulfur in the inner wall of air pipe 3, and this double scraping mechanism effectively prevents the deposition of sublimed sulfur in the inner wall of cyclone 4 and air pipe 3, thereby reduce the risk of equipment blockage, significantly improve the operation stability of equipment, and in the process that scraping board 509 is scraped to the sublimed sulfur in the inner wall of cyclone 4, second broken pole 510 is scraped to the raw material in cyclone 4, ensure that the granularity is more uniform after raw material is crushed twice, create more favorable conditions for subsequent preheating and calcination process, further improve the efficiency and effect of whole technological process.

[0028] Although the embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A phosphogypsum acid production co-production cement kiln tail preheating device, comprising a crushing box and a feeding pipe arranged at the top end of the crushing box, a wind pipe is arranged at the bottom end of the crushing box, and a cyclone is arranged at the bottom end of the wind pipe, characterized in that: a crushing and scraping assembly is arranged at the top end of the crushing box and is used for scraping deposited sublimed sulfur while crushing raw materials; the crushing and scraping assembly comprises a mounting seat arranged at the top end of the crushing box, a motor is mounted on the inner wall of the mounting seat, the output end of the motor penetrates through the inner wall of the feeding pipe and is fixedly connected with a rotating shaft, the other end of the rotating shaft is rotatably connected with the inner wall of the feeding pipe, the outer wall of the rotating shaft is fixedly connected with a first gear, the first gear is meshingly connected with a second gear, the bottom end of the second gear is provided with a rotating rod, the outer wall of the rotating rod is provided with a first crushing rod, the bottom end of the rotating rod is fixedly connected with a connecting rod, the bottom end of the connecting rod is provided with a scraper on both sides, a limiting groove is formed in the outer wall of one side of the scraper, a sliding rail is slidably connected with the inner wall of the limiting groove, and the sliding rail is arranged on the inner wall of the cyclone.

2. The phosphogypsum acid co-production kiln tail preheating device according to claim 1, characterized in that: the outer wall of the other side of the scraper is provided with a second crushing rod.

3. The phosphogypsum acid co-production kiln tail preheating device according to claim 1, characterized in that: the outer wall of the rotating rod is rotatably connected with a material scattering plate.

4. The phosphogypsum acid co-production kiln tail preheating device according to claim 1, characterized in that: the outer wall of the material scattering plate is fixedly connected with the inner wall of the crushing box.

5. The phosphogypsum acid co-production kiln tail preheating device according to claim 1, characterized in that: a material scattering hole is formed in the top end of the material scattering plate.

6. The phosphogypsum acid co-production kiln preheating device according to claim 5, characterized in that: the inner wall of the connection between the crushing box and the wind pipe is arranged in a slope.

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