System equipment for calcining and modifying phosphogypsum by using waste heat outside main kiln body

Abstract

The utility model provides the technical field of waste heat recovery equipment, provide a kind of main kiln kiln body outer waste heat energy-saving efficient calcination modified phosphogypsum's system equipment, it include: jacket and law barrel, first layer cylinder is provided in jacket, first layer cylinder divides the inside of jacket into inner interlayer and outer interlayer, the first end of inner interlayer and the first end of outer interlayer are communicated.The end of first layer cylinder is equipped with notch, the second end of inner interlayer and the second end of outer interlayer are communicated by notch.Law barrel is equipped with partition cylinder, partition cylinder divides the inside of law barrel into inner cavity and outer cavity, first opening and second opening are further equipped on law barrel, first opening and inner cavity are communicated, second opening and outer cavity are communicated.The utility model's main kiln kiln body outer waste heat energy-saving efficient calcination modified phosphogypsum's system equipment, user only needs to adjust the relative position of law barrel and jacket, can adjust the moving path of material, to switch the processing mode of material, satisfy the processing demand of different material.

Description

Technical Field

[0001] This utility model relates to the field of waste heat utilization equipment technology, and in particular to a system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln. Background Technology

[0002] In related technologies, in order to improve the thermal efficiency of heating devices such as the main kiln body, the waste heat lost from the main kiln body is usually used for the heat treatment of other materials. Existing waste heat utilization devices often cannot adjust the production mode during heating, making them difficult to adapt to the heat processing needs of different materials. Utility Model Content

[0003] This invention provides a system for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln exterior. This system addresses the shortcomings of existing waste heat utilization devices, which often cannot adjust production modes during heating and are difficult to adapt to the thermal processing of different materials.

[0004] This utility model provides a system for efficiently calcining modified phosphogypsum using waste heat from the main kiln exterior, comprising:

[0005] A jacket is provided inside which a first cylindrical body is provided, dividing the interior of the jacket into an inner jacket and an outer jacket; the inner jacket is used to be attached to the outer wall of the main kiln body; the first end of the inner jacket and the first end of the outer jacket are connected; the end of the first cylindrical body is provided with a notch, and the second end of the inner jacket and the second end of the outer jacket are connected through the notch;

[0006] A sleeve is provided inside, which divides the interior of the sleeve into an inner cavity and an outer cavity. The inner cavity and the inner interlayer are correspondingly arranged, and the outer cavity and the outer interlayer are correspondingly arranged. The sleeve is also provided with a first opening and a second opening. The first opening communicates with the inner cavity, and the second opening communicates with the outer cavity. The sleeve is configured to move relative to the jacket between a first position and a second position.

[0007] When the cylinder moves to the first position, the dividing cylinder inserts into and closes the notch, the inner cavity and the second end of the inner interlayer are connected, the outer cavity and the second end of the outer interlayer are connected, the second opening is configured to communicate with the feed hopper for introducing the material to be heated into the outer cavity, and the first opening is configured to communicate with the storage bin for discharging the heated material from the inner cavity; when the cylinder moves to the second position, the dividing cylinder moves away from the notch.

[0008] According to the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln of this utility model, the inner interlayer is configured to be sleeved on the outside of the main kiln body, and the outer interlayer is sleeved on the outside of the inner interlayer; the inner cavity is configured to be sleeved on the outside of the main kiln body, and the outer cavity is sleeved on the outside of the inner cavity.

[0009] The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln according to this utility model also includes a first driving component. The first driving component is disposed in the jacket and is connected to the cylinder for transmission, so as to drive the cylinder to move between the first position and the second position along the axial direction of the main kiln body.

[0010] According to the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln exterior of this utility model, the first driving component includes:

[0011] A connecting bracket is provided in the jacket, and the cylinder is movably connected to the connecting bracket along the axial direction of the main kiln body;

[0012] The first driving component is disposed on the connecting bracket and is connected to the cylinder drive to drive the cylinder to move axially along the main kiln body.

[0013] The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln according to this utility model also includes a second driving component. The second driving component is disposed in the jacket and is used to drive the material to be heated from the second end to the first end of the outer jacket, and to drive the material to be heated from the first end to the second end of the inner jacket.

[0014] According to the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln exterior of this utility model, the second drive component includes:

[0015] The second driving component is connected to the sleeve in a transmission manner to drive the sleeve to rotate;

[0016] The fifth spiral plate is spirally wound around the inner interlayer along the axial direction of the main kiln body to form a fifth spiral channel within the inner interlayer.

[0017] The second spiral plate is spirally wound around the outer interlayer along the axial direction of the main kiln body to form a second spiral channel in the outer interlayer;

[0018] The fifth spiral plate and the second spiral plate rotate in opposite directions; the fifth spiral plate is used to drive the material to move along the fifth spiral channel under the drive of the second driving member; the second spiral plate is used to drive the material to move along the second spiral channel under the drive of the second driving member.

[0019] According to the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln of this utility model, there are multiple fifth spiral plates, which are arranged at intervals along the axial direction of the main kiln body to form multiple fifth spiral channels.

[0020] According to the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln of this utility model, there are multiple second spiral plates, which are arranged at intervals along the axial direction of the main kiln body to form multiple second spiral channels.

[0021] According to the present invention, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln body has the second end of the outer interlayer extending outward along the axial direction of the main kiln body relative to the second end of the inner interlayer.

[0022] According to the present invention, the system equipment for calcining modified phosphogypsum using waste heat outside the main kiln is provided with a first exhaust hole communicating with the inner layer and a second exhaust hole communicating with the outer layer. Both the first exhaust hole and the second exhaust hole are provided with exhaust valves.

[0023] This utility model relates to a system for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln exterior. By installing a jacket around the main kiln body, with inner and outer layers for containing materials, the system utilizes the waste heat radiating from the main kiln to calcine the materials within the jacket, thus improving the overall system's thermal efficiency. Simultaneously, by movably mounting a feed cylinder on the main kiln body, the user can adjust the relative position of the feed cylinder and the jacket, thereby switching the material processing mode. When the feed cylinder is moved to the first position, the feed cylinder... The inner cavity of the cylinder and the jacket can be connected to form a single moving channel with an inlet and outlet, allowing the material to enter from one opening of the cylinder, be heated through the inner cavity of the cylinder and the jacket, and then be discharged from the other opening of the cylinder, thus achieving continuous feeding and processing of the material. When the cylinder moves to the second position, the cylinder and the jacket separate, and the inner and outer jackets of the jacket can be connected to form a circulating moving path, allowing the material to circulate and be heated between the inner and outer jackets, thus achieving intermittent feeding and processing of the material. As can be seen from the above, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln of this utility model can simultaneously treat phosphogypsum or other materials to be dehydrated, dried and calcined by utilizing the diffused heat energy outside the kiln body during normal high-temperature calcination of inorganic or organic materials in an energy-saving and carbon-reducing manner. Users only need to adjust the position of the cylinder along the axial direction of the main kiln body to switch the processing mode of the material according to the material to meet the processing needs of different materials. This effectively solves the defects of the existing waste heat utilization device, which often cannot adjust the production mode during heating and is difficult to apply to the thermal processing of different materials. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is one of the schematic diagrams showing the furnace cylinder of the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln, provided in an embodiment of this utility model, in the first position.

[0026] Figure 2 This is one of the schematic diagrams showing the furnace cylinder in the second position of the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln, as provided in this embodiment of the utility model.

[0027] Figure 3 This is the second schematic diagram of the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln, provided in this embodiment of the utility model, with the kiln cylinder located in the first position.

[0028] Figure 4 This is the second schematic diagram of the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln, provided in this embodiment of the utility model, with the cylinder located in the second position.

[0029] Figure 5 This is one of the partial structural schematic diagrams of the first end of the inner interlayer and the first end of the outer interlayer provided in the embodiment of this utility model.

[0030] Figure 6 This is one of the partial structural schematic diagrams of the method cylinder provided in the embodiment of this utility model.

[0031] Figure 7 This is the second schematic diagram of a portion of the structure of the method cylinder provided in this embodiment of the utility model.

[0032] Figure 8 This is the second partial structural schematic diagram of the first end of the inner interlayer and the first end of the outer interlayer provided in this embodiment of the utility model.

[0033] Figure 9 This is a schematic diagram of the material hook plate provided in an embodiment of this utility model.

[0034] Figure label:

[0035] 1. Main kiln body;

[0036] 2. Jacket; 21. Inner jacket; 22. Outer jacket; 23. Fifth spiral plate; 24. Second spiral plate; 25. Hook plate; 26. First layer cylinder; 27. Third spiral plate; 28. Fourth spiral plate;

[0037] 3. Cylinder; 31. Inner cavity; 32. Outer cavity; 33. First opening; 34. Second opening; 35. Sixth spiral plate; 36. First spiral plate. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] The following is combined with Figures 1-9 This invention describes a system for efficiently calcining modified phosphogypsum using waste heat from the main kiln exterior.

[0040] like Figures 1 to 8 As shown, in some embodiments, this utility model provides a system for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln exterior, comprising: a jacket 2 and a cylindrical shell 3. The jacket 2 has a first cylindrical body 26 inside, which divides the interior of the jacket 2 into an outer jacket 22 and at least one inner jacket 21. The inner jacket 21 is attached to the outer wall of the main kiln body 1. The first end of the inner jacket 21 communicates with the first end of the outer jacket 22. The end of the first cylindrical body 26 has a notch, and the second end of the inner jacket 21 communicates with the second end of the outer jacket 22 through the notch. The cylindrical shell 3 has a dividing cylinder inside, which divides the interior of the cylindrical shell 3 into an inner cavity 31 and an outer cavity 32. The inner cavity 31 and the inner jacket 21 are correspondingly arranged, and the outer cavity 32 and the outer jacket 22 are correspondingly arranged. The cylindrical shell 3 also has a first opening 33 and a second opening 34, the first opening 33 communicating with the inner cavity 31 and the second opening 34 communicating with the outer cavity 32. The separator cylinder 3 is configured to move relative to the jacket 2 between a first position and a second position. When the separator cylinder 3 moves to the first position, the partition cylinder inserts and closes the notch, the second end of the inner cavity 31 and the inner jacket 21 are connected, the second end of the outer cavity 32 and the outer jacket 22 are connected, the second opening 34 is configured to communicate with the feed hopper for introducing the material to be heated into the outer cavity 32, and the first opening 33 is configured to communicate with the storage bin for discharging the heated material from the inner cavity 31. When the separator cylinder 3 moves to the second position, the partition cylinder moves away from the notch.

[0041] In this embodiment, the main kiln body 1 is used to calcine materials such as ceramsite and cement. A jacket 2 is installed outside the main kiln body 1, forming an inner jacket 21 and an outer jacket 22. Both the inner and outer jackets 21 and 22 can be used to hold materials to be heated (such as gypsum). The jacket 2 can utilize the residual heat radiated from the surface of the main kiln body 1 to heat-treat the materials within the inner and outer jackets 21 and 22 to obtain the desired product. For example, phosphogypsum can be calcined to produce various types of gypsum powder. The inner jacket 21 is attached to the outer wall of the main kiln body 1 to directly receive the residual heat radiated from its surface, while the outer jacket 22 receives the heat transferred from the inner jacket 21.

[0042] Meanwhile, by setting up a cylinder 3 that can move relative to the jacket 2, the user can adjust the relative position of the jacket 2 and the cylinder 3, so as to adjust the movement path of the material in the system equipment of the main kiln body waste heat energy-saving and efficient calcination modified phosphogypsum in coordination with the jacket 2, thereby realizing the switching between different production modes.

[0043] Specifically, such as Figure 1 and Figure 3 As shown, when the cylinder 3 is moved to the first position, the inner cavity 31 and the inner interlayer 21 are connected, and the outer cavity 32 and the outer interlayer 22 are connected. The separator cylinder is inserted and the notch of the first layer cylinder 26 is closed, thereby isolating the second end of the inner interlayer 21 and the second end of the outer interlayer 22. The first opening 33 of the cylinder 3, the inner cavity 31, the inner interlayer 21 and the outer interlayer 22 of the jacket 2, the outer cavity 32 of the cylinder 3, and the second opening 34 are sequentially connected to form a unique channel for material movement. This allows the material to enter from either the first opening 33 or the second opening 34 of the cylinder 3, be heated in the inner cavity of the cylinder 3 and the interlayer of the jacket 2, and then flow out from the other opening. Understandably, the second opening 34 on the outer side is usually designated as the feed inlet and connected to the feed hopper. The material first passes through the outer cavity 32 and outer interlayer 22, where it is preheated by the substances in the inner interlayer 21 and inner cavity 31. Then, it enters the inner interlayer 21 and inner cavity 31 for further heating, and finally exits from the first opening 33 on the inner side (the material's movement path is as follows). Figure 3 (As indicated by the middle arrow) The material is stored in the storage bin, thus realizing continuous feeding, heating and continuous discharging of the material.

[0044] like Figure 2 and Figure 4As shown, when the cylinder 3 is moved to the second position, the cylinder 3 separates from the jacket 2, the separating cylinder moves away from the notch, and the second end of the inner jacket 21 and the second end of the outer jacket 22 are reconnected through the notch. The first end of the inner jacket 21 and the first end of the outer jacket 22 are connected, allowing the material to circulate and move between the inner jacket 21 and the outer jacket 22 for heating (the material movement path is as follows). Figure 4 (As shown by the middle arrow), thus enabling intermittent feeding and heating of materials.

[0045] This utility model relates to a system for energy-saving and efficient calcination of modified phosphogypsum using waste heat from the main kiln body 1. A jacket 2 is fitted around the outside of the main kiln body 1. The jacket 2 has an inner jacket 21 and an outer jacket 22 for containing materials. This allows the waste heat radiating from the main kiln body 1 to calcine the materials within the jacket 2, improving the overall system's thermal efficiency. Simultaneously, a movably mounted cylinder 3 is installed on the main kiln body 1, allowing the user to adjust the relative position of the cylinder 3 and the jacket 2, thereby switching the material processing mode. When the cylinder 3 is moved to the first position, the cylinder 3... The inner cavity of the cylinder 3 and the jacket 2 can be connected to form a unique moving channel with an inlet and outlet, allowing the material to enter from one opening of the cylinder 3, be heated through the inner cavity of the cylinder 3 and the jacket 2, and then be discharged from the other opening of the cylinder 3, so as to realize continuous feeding and processing of the material; when the cylinder 3 moves to the second position, the cylinder 3 and the jacket 2 separate, and the inner jacket 21 and the outer jacket 22 of the jacket 2 can be connected to form a circulating moving path, allowing the material to circulate and be heated between the inner jacket 21 and the outer jacket 22, so as to realize intermittent feeding and processing of the material. As can be seen from the above, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using the waste heat outside the main kiln body 1 can simultaneously treat phosphogypsum or other materials to be dehydrated, dried and calcined using energy-saving and carbon-reducing methods when the main kiln body 1 is calcining inorganic or organic materials at normal high temperature. Users only need to adjust the position of the cylinder 3 along the axial direction of the main kiln body 1 to switch the processing mode of the material according to the material to meet the processing needs of different materials. This effectively solves the defect of the waste heat utilization device in the prior art that often cannot adjust the production mode during heating and is difficult to apply to the thermal processing of different materials.

[0046] Specifically, in some embodiments, such as Figure 3 , Figure 4 and Figure 8 As shown, the first end of the first layer cylinder 26 has a first notch connecting the first end of the inner interlayer 21 and the first end of the outer interlayer 22, and the second end of the first layer cylinder 26 has a second notch connecting the second end of the inner interlayer 21 and the second end of the outer interlayer 22. A partition cylinder is provided between the inner cavity 31 and the outer cavity 32. When the cylinder 3 moves to the first position, the partition cylinder is inserted into the second notch to separate the second end of the inner interlayer 21 and the second end of the outer interlayer 22.

[0047] It is understandable that one or more inner layers 21 can be provided according to actual production needs, thereby forming a double-layer or multi-layer heating structure with the outer layer 22.

[0048] Specifically, in some embodiments, there are multiple inner interlayers 21. These multiple inner interlayers 21 are all fitted onto the outer side of the main kiln body 1 and are stacked radially along the main kiln body 1. When the cylinder 3 is connected to the jacket 2, the inner cavity 31 and the second end of the innermost inner interlayer 21 are connected. When the cylinder 3 is separated from the jacket 2, the second ends of adjacent inner interlayers 21 are connected to each other, and the second end of the outermost inner interlayer 21 is also connected to the second end of the outer interlayer 22.

[0049] In this embodiment, by setting multiple stacked inner jackets 21, when the cylinder 3 is installed on the jacket 2, part of the structure of the cylinder 3 separates the second end of the inner jacket 21 from the second end of the outer jacket 22, so that the material enters the outer cavity 32 and the outer jacket 22 sequentially from the second opening 34 of the cylinder 3, and then enters the outermost inner jacket 21 from the outer jacket 22. After moving and heating along the multiple inner jackets 21, it enters the inner cavity 31 of the cylinder 3 from the innermost inner jacket 21, and finally exits from the first opening 33 on the inner side. When the cylinder 3 and the jacket 2 are separated, the material can circulate between the multiple inner jackets 21 and the outer jacket 22.

[0050] Specifically, in some embodiments, such as Figures 1 to 4 As shown, the inner interlayer 21 is fitted on the outside of the main kiln body 1, the outer interlayer 22 is fitted on the outside of the inner interlayer 21, the inner cavity 31 is configured to be fitted on the outside of the main kiln body 1, and the outer cavity 32 is fitted on the outside of the inner cavity 31.

[0051] In this embodiment, by fitting the inner jacket 21 onto the outside of the main kiln body 1 and the outer jacket 22 onto the outside of the inner jacket 21, the contact area between the inner jacket 21 and the main kiln body 1, and between the inner jacket 21 and the outer jacket 22, can be maximized. This improves the utilization efficiency of the waste heat dissipated from the main kiln body 1 and the heat transfer efficiency between the inner jacket 21 and the outer jacket 22. Simultaneously, by fitting the inner cavity 31 onto the outside of the main kiln body 1 and the outer cavity 32 onto the outside of the inner cavity 31, the inner cavity 31 and the inner jacket 21, and the outer cavity 32 and the outer jacket 22, are respectively arranged opposite to each other, so that the jacket 2 and the sleeve 3 can be connected to each other.

[0052] Specifically, in some embodiments, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln also includes a first driving component. The first driving component is disposed in the jacket 2 and is connected to the cylinder 3 for transmission, so as to drive the cylinder 3 to move between a first position and a second position along the axial direction of the main kiln body 1.

[0053] In this embodiment, by providing a first driving component on the jacket 2, the first driving component can drive the cylinder 3 to move relative to the jacket 2 along the axial direction of the main kiln body 1, so that the cylinder 3 can move in the first position and the second position, thereby allowing the cylinder 3 and the jacket 2 to dock or separate from each other, without requiring the user to manually move the cylinder 3, which is more time-saving and labor-saving.

[0054] Specifically, in some embodiments, the first driving assembly includes a connecting bracket and a first driving member. The connecting bracket is disposed on the jacket 2, and the cylinder 3 is movably connected to the connecting bracket along the axial direction of the main kiln body 1. The first driving member is disposed on the connecting bracket and is drively connected to the cylinder 3 to drive the cylinder 3 to move along the axial direction of the main kiln body 1.

[0055] In this embodiment, the connecting bracket is used to connect the jacket 2 and the cylinder 3. The connecting bracket allows the jacket 2 and the cylinder 3 to rotate synchronously, so that the docking structures on the connecting jacket 2 and the cylinder 3 can always be kept in corresponding positions, facilitating docking. At the same time, the cylinder 3 can move relative to the connecting bracket along the axial direction of the main kiln body 1 without affecting the docking or separation of the cylinder 3 and the jacket 2. The first driving member is used to drive the cylinder 3 to move, so that the cylinder 3 and the jacket 2 can dock or separate.

[0056] Specifically, in some embodiments, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln also includes a second driving component. The second driving component is disposed in the jacket 2 and is used to drive the material from the second end of the outer jacket 22 to the first end, and to drive the material from the first end of the inner jacket 21 to the second end.

[0057] In this embodiment, a second driving component is provided within the jacket 2. This second driving component drives the material to move and be heated within the inner jacket 21 and the outer jacket 22. Specifically, when the cylinder 3 is in the first position, the material introduced through the second opening 34 passes through the outer cavity 32 into the outer jacket 22, moves from the second end to the first end, enters the first end of the inner jacket 21 from the first end of the outer jacket 22, moves from the first end of the inner jacket 21 to the second end, and finally flows out through the inner cavity 31 and the first opening 33. When the cylinder 3 is in the second position, the material is transported from the second end of the outer jacket 22 to the first end under the drive of the first driving component, enters the first end of the inner jacket 21 from the first end of the outer jacket 22, moves from the first end of the inner jacket 21 to the second end, and then enters the second end of the outer jacket 22 from the second end of the inner jacket 21, forming a cycle.

[0058] Specifically, in some embodiments, such as Figure 5As shown, the second driving assembly includes: a second driving member (not shown), a fifth spiral plate 23, and a second spiral plate 24. The second driving member is driven by the jacket 2 to drive the jacket 2 to rotate. The fifth spiral plate 23 is spirally wound along the axial direction of the main kiln body 1 within the inner jacket 21 to form a fifth spiral channel within the inner jacket 21. The second spiral plate 24 is spirally wound along the axial direction of the main kiln body 1 within the outer jacket 22 to form a second spiral channel within the outer jacket 22. The fifth spiral plate 23 and the second spiral plate 24 have opposite directions of rotation. The fifth spiral plate 23 is used to drive the material to move along the fifth spiral channel under the drive of the second driving member; the second spiral plate 24 is used to drive the material to move along the second spiral channel under the drive of the second driving member.

[0059] In this embodiment, the second driving member is used to drive the jacket 2 to rotate. During the rotation of the jacket 2, the second spiral plate 24 can push the material in the outer jacket 22, causing the material to move along the second spiral channel from the second end to the first end of the outer jacket 22. At the same time, during the rotation of the jacket 2, the fifth spiral plate 23 can push the material in the inner jacket 21 to move along the fifth spiral channel. The fifth spiral plate 23 and the second spiral plate 24 rotate in opposite directions, so that the fifth spiral plate 23 can move the material along the fifth spiral channel from the first end to the second end of the outer jacket 22.

[0060] For example, in some specific embodiments, the second driving member is connected to the main kiln body 1 to drive the main kiln body 1 to rotate, thereby driving the main kiln body 1 and the outer jacket 2 and the cylinder 3 to rotate synchronously. During the rotation, the fifth spiral plate 23 and the second spiral plate 24 inside the jacket 2 can drive the material to move in the jacket 2.

[0061] Specifically, in some embodiments, there may be multiple fifth spiral plates 23, which are arranged at intervals along the axial direction of the main kiln body 1 to form multiple fifth spiral channels.

[0062] In this embodiment, by setting multiple fifth spiral plates 23, a fifth spiral channel is formed between two adjacent fifth spiral plates 23. Multiple fifth spiral channels can be used for material movement, so that the material can be evenly dispersed in the inner interlayer 21, and the material is heated more evenly.

[0063] Specifically, in some embodiments, there may be multiple second spiral plates 24, which are arranged at intervals along the axial direction of the main kiln body 1 to form multiple second spiral channels.

[0064] In this embodiment, by setting multiple second spiral plates 24, a second spiral channel is formed between two adjacent second spiral plates 24. Multiple second spiral channels can be used for material movement, so that the material can be evenly dispersed in the inner interlayer 21, and the material is heated more evenly.

[0065] It is understandable that the fifth spiral channel and the second spiral channel can be set in a one-to-one correspondence, with the first end of the fifth spiral channel connected to the first end of the corresponding second spiral channel, and the second end of the fifth spiral channel connected to the second end of the corresponding second spiral channel.

[0066] It is understandable that the fifth spiral channel and the second spiral channel can be set in a one-to-one correspondence, with the first end of the fifth spiral channel connected to the first end of the corresponding second spiral channel, and the second end of the fifth spiral channel connected to the second end of the corresponding second spiral channel.

[0067] Specifically, in some embodiments, such as Figure 6 , Figure 7 As shown, a sixth spiral plate 35 is provided inside the inner cavity 31. The sixth spiral plate 35 is spirally wound around the inner cavity 31 along the axial direction of the main kiln body 1 to form a sixth spiral channel within the inner cavity 31. The sixth spiral channel is connected to the fifth spiral channel. A first spiral plate 36 is provided inside the outer cavity 32. The first spiral plate 36 is spirally wound around the outer cavity 32 along the axial direction of the main kiln body 1 to form a first spiral channel within the outer cavity 32. When the sleeve 3 is installed in the jacket 2, the sixth spiral channel and the fifth spiral channel are connected. The first spiral channel and the second spiral channel are connected.

[0068] In this embodiment, it is understood that after the cylinder 3 is installed in the jacket 2, the cylinder 3 and the jacket 2 can rotate synchronously. By providing a first spiral plate 36 in the outer cavity 32 to form a first spiral channel for communication with the second spiral channel, it is understood that the first spiral plate 36 and the second spiral plate 24 have the same direction of rotation. When the cylinder 3 rotates synchronously with the jacket 2, after the material enters from the second opening 34, it can move along the first spiral channel to the second spiral channel under the push of the first spiral plate 36. Similarly, by providing a sixth spiral plate 35 in the inner cavity 31 to form a sixth spiral channel for communication with the fifth spiral channel, it is understood that the sixth spiral plate 35 and the fifth spiral plate 23 have the same direction of rotation. When the cylinder 3 rotates synchronously with the jacket 2, after the material enters from the fifth spiral channel into the sixth spiral channel, it can move along the sixth spiral channel to the first opening 33 under the push of the sixth spiral plate 35, so as to be discharged from the first opening 33.

[0069] Specifically, in some embodiments, there may be multiple sixth spiral plates 35, which are arranged at intervals along the axial direction of the main kiln body 1 to form multiple sixth spiral channels.

[0070] In this embodiment, by setting multiple sixth spiral plates 35, a sixth spiral channel is formed between two adjacent sixth spiral plates 35. Multiple sixth spiral channels can be used for material movement, so that the material can be evenly dispersed in the inner cavity 31, and the material is heated more evenly.

[0071] Specifically, in some embodiments, there may be multiple first spiral plates 36, which are arranged at intervals along the axial direction of the main kiln body 1 to form multiple first spiral channels.

[0072] In this embodiment, by setting multiple first spiral plates 36, a first spiral channel is formed between two adjacent first spiral plates 36. Multiple first spiral channels can be used for material movement, so that the material can be evenly dispersed in the outer cavity 32, and the material is heated more evenly.

[0073] It is understandable that the fifth and sixth spiral channels can be set in a one-to-one correspondence, with the fifth spiral channel connected to the corresponding sixth spiral channel; the second spiral channel and the first spiral channel can be set in a one-to-one correspondence, with the second spiral channel connected to the corresponding first spiral channel.

[0074] Specifically, in some embodiments, such as Figure 5 and Figure 9 As shown, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln also includes a material-hooking plate 25; a third spiral plate 27 is also provided in the outer interlayer 22, located at the end of the second spiral plate 24 away from the first spiral plate 36, to form a third spiral channel communicating with the second spiral channel. A fourth spiral plate 28 is also provided in the inner interlayer 21, located at the end of the fifth spiral plate 23 away from the sixth spiral plate 35, to form a fourth spiral channel communicating with the fifth spiral channel. The inner peripheral wall of the third spiral channel and the outer peripheral wall of the fourth spiral channel are connected. The material-hooking plate 25 is provided in the third spiral channel and extends radially along the third spiral channel to guide the material from the third spiral channel into the fourth spiral channel. The first spiral plate 36, the second spiral plate 24, and the third spiral plate 27 have the same rotation direction; the fourth spiral plate 28, the fifth spiral plate 23, and the sixth spiral plate 35 all have the opposite rotation direction to the third spiral plate 27.

[0075] In this embodiment, a third spiral plate 27 is provided near the first end of the outer jacket 22 to form a third spiral channel that communicates with the second spiral channel. This allows the material in the outer jacket 22 to enter the third spiral channel after passing through the second spiral channel. The third spiral channel is provided with a radially extending hook plate 25. When the entire jacket 2 rotates to a certain angle, the hook plate 25 can scoop the material in the third spiral channel toward the fourth spiral channel. The third spiral channel and the fourth spiral channel are in opposite directions, so that the material entering the fourth spiral channel moves along the fourth spiral channel into the fifth spiral channel.

[0076] Specifically, in some embodiments, the pitches of the first spiral plate 36, the third spiral plate 27, the fourth spiral plate 28, and the sixth spiral plate 35 are equal, the pitches of the second spiral plate 24 and the fifth spiral plate 23 are equal, and the pitch of the former is greater than the pitch of the latter.

[0077] Specifically, in some embodiments, such as Figure 3 , Figure 4 and Figure 8 As shown, a first cylindrical body 26 is provided between the inner layer 21 and the outer layer 22. The first cylindrical body 26 is used to separate the second spiral channel and the fifth spiral channel. The first end of the first cylindrical body 26 forms a first notch connecting the third spiral channel and the fourth spiral channel, and the second end of the first cylindrical body 26 forms a second notch connecting the second spiral channel and the fifth spiral channel. A partition cylindrical body is provided between the inner cavity 31 and the outer cavity 32 to separate the first spiral channel and the sixth spiral channel. When the sleeve 2 and the inner cylinder 3 are connected, the partition cylindrical body is inserted into the second notch to completely separate the second spiral channel and the fifth spiral channel.

[0078] In this embodiment, a first cylindrical body 26 is provided between the inner layer 21 and the outer layer 22 to isolate the main structure of the second spiral channel and the fifth spiral channel. When the cylindrical body 3 and the jacket 2 are separated, the third spiral channel and the fourth spiral channel are connected through the first notch, and the end of the second spiral channel and the end of the fifth spiral channel are connected through the second notch, so that the material can circulate between the second spiral channel, the third spiral channel, the fourth spiral channel and the fifth spiral channel. When the cylindrical body 3 and the jacket 2 are connected, the separating cylinder is inserted into the second notch to close the second notch, so that the material moves along the path of the outer cavity 32, the outer layer 22, the inner layer 21 and the inner cavity 31.

[0079] Specifically, in some embodiments, such as Figure 5 and Figure 9As shown, the hook plate 25 includes a first hook plate, a second hook plate, a third hook plate and a fourth hook plate. The first hook plate, the second hook plate, the third hook plate and the fourth hook plate are arranged at intervals along the material transport direction. The dimensions of the first hook plate, the second hook plate, the third hook plate and the fourth hook plate increase sequentially along the radial direction of the third spiral channel.

[0080] In this embodiment, by sequentially arranging the first hook plate, the second hook plate, the third hook plate, and the fourth hook plate along the material transport direction in the second spiral channel, the material moves through the first hook plate, the second hook plate, the third hook plate, and the fourth hook plate in sequence as it moves within the second spiral channel. It can be understood that the dimensions of the first hook plate, the second hook plate, the third hook plate, and the fourth hook plate gradually increase along the radial direction of the third spiral channel, so as to gradually guide the material towards the inner interlayer 21, and finally allow the material to enter the first end of the inner interlayer 21 from the first end of the outer interlayer 22.

[0081] Specifically, in some embodiments, such as Figure 3 and Figure 4 As shown, the second end of the outer interlayer 22 extends outward along the axial direction of the main kiln body 1 relative to the second end of the inner interlayer 21.

[0082] In this embodiment, by extending the second end of the outer jacket 22 outward relative to the second end of the inner jacket 21 along the axial direction of the main kiln body 1, when the cylinder 3 and the jacket 2 are separated, the material in the inner jacket 21 can move outward from the second end and then enter the outer jacket 22, and move in the opposite direction to the first end under the action of the second spiral plate 24 in the outer jacket 22.

[0083] In some embodiments, when the cylinder 3 is connected to the jacket 2, the system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln also includes a second drive component. The second drive component is disposed in the jacket 2 and is connected to the cylinder 3 in a transmission manner to drive the cylinder 3 to move axially along the main kiln body 1 so that the cylinder 3 and the jacket 2 can be connected or separated.

[0084] In this embodiment, by providing a second driving component on the jacket 2, the second driving component can drive the cylinder 3 to move relative to the jacket 2 along the axial direction of the main kiln body 1, so that the cylinder 3 moves closer to or away from the jacket 2, so that the cylinder 3 and the jacket 2 can be inserted into each other, and the inner jacket 21 and the inner cavity 31 can be connected, the outer jacket 22 and the outer cavity 32 can be connected, or the cylinder 3 and the jacket 2 can be separated from each other.

[0085] Specifically, in some embodiments, the second driving assembly includes a connecting bracket and a second driving member. The connecting bracket is disposed on the jacket 2, and the cylinder 3 is movably connected to the connecting bracket along the axial direction of the main kiln body 1. The second driving member is disposed on the connecting bracket and is drively connected to the cylinder 3 to drive the cylinder 3 to move along the axial direction of the main kiln body 1.

[0086] In this embodiment, the connecting bracket is used to connect the jacket 2 and the cylinder 3. The connecting bracket allows the jacket 2 and the cylinder 3 to rotate synchronously, so that the docking structures on the connecting jacket 2 and the cylinder 3 can always be kept in the corresponding positions, facilitating docking. At the same time, the cylinder 3 can move relative to the connecting bracket along the axial direction of the main kiln body 1 without affecting the docking or separation of the cylinder 3 and the jacket 2. The second driving member is used to drive the cylinder 3 to move, so that the cylinder 3 and the jacket 2 can dock or separate.

[0087] In some embodiments, a heat insulation layer is provided on the outside of the jacket 2 to prevent heat from dissipating from the jacket 2 to the outside.

[0088] Optionally, in some embodiments, the jacket 2 is provided with a first vent hole communicating with the inner jacket 21 and a second vent hole communicating with the outer jacket 22, and both the first vent hole and the second vent hole are provided with vent valves.

[0089] In this embodiment, a first vent hole and a second vent hole are provided on the jacket 2, and an exhaust valve is provided in the first vent hole and the second vent hole. The exhaust valve can be used to discharge the gas generated during the calcination process of the material.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A system for efficiently calcining modified phosphogypsum using waste heat from the main kiln exterior, characterized in that: include: A jacket, wherein a first cylindrical layer is provided inside the jacket, the first cylindrical layer dividing the interior of the jacket into an outer jacket and at least one inner jacket; The inner interlayer is used to be attached to the outer wall of the main kiln body; the first end of the inner interlayer is connected to the first end of the outer interlayer; the end of the first layer cylinder is provided with a notch, and the second end of the inner interlayer and the second end of the outer interlayer are connected through the notch; A sleeve is provided inside, which divides the interior of the sleeve into an inner cavity and an outer cavity. The inner cavity and the inner interlayer are correspondingly arranged, and the outer cavity and the outer interlayer are correspondingly arranged. The sleeve is also provided with a first opening and a second opening. The first opening communicates with the inner cavity, and the second opening communicates with the outer cavity. The sleeve is configured to move relative to the jacket between a first position and a second position. When the cylinder moves to the first position, the partition cylinder inserts into and closes the notch, the inner cavity and the second end of the inner interlayer are connected, the outer cavity and the second end of the outer interlayer are connected, the second opening is configured to be connected to the feed hopper for introducing the material to be heated into the outer cavity, and the first opening is configured to be connected to the storage bin for discharging the heated material in the inner cavity; When the separator cylinder moves to the second position, the separator cylinder moves away from the notch.

2. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 1, characterized in that, The inner interlayer has multiple layers; Multiple inner interlayers are fitted onto the outside of the main kiln body and are stacked radially along the main kiln body; When the tubular material is connected to the jacket, the inner cavity is connected to the second end of the innermost inner layer; when the tubular material is separated from the jacket, the second ends of adjacent inner layers are connected to each other, and the second end of the outermost inner layer is also connected to the second end of the outer layer.

3. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 1, characterized in that, The inner interlayer is configured to be fitted onto the outside of the main kiln body, and the outer interlayer is fitted onto the outside of the inner interlayer; the inner cavity is configured to be fitted onto the outside of the main kiln body, and the outer cavity is fitted onto the outside of the inner cavity.

4. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 3, characterized in that, It also includes a first driving component, which is disposed in the jacket and drivenly connected to the cylinder to drive the cylinder to move between the first position and the second position along the axial direction of the main kiln body.

5. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 4, characterized in that, The first driving component includes: A connecting bracket is provided in the jacket, and the cylinder is movably connected to the connecting bracket along the axial direction of the main kiln body; The first driving component is disposed on the connecting bracket and is connected to the cylinder drive to drive the cylinder to move axially along the main kiln body.

6. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 3, characterized in that, It also includes a second driving component disposed in the jacket, the second driving component being used to drive the material to be heated from the second end of the outer jacket to the first end, and to drive the material to be heated to move from the first end of the inner jacket to the second end.

7. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 6, characterized in that, The second driving component includes: The second driving component is connected to the sleeve in a transmission manner to drive the sleeve to rotate; The fifth spiral plate is spirally wound around the inner interlayer along the axial direction of the main kiln body to form a fifth spiral channel within the inner interlayer. The second spiral plate is spirally wound around the outer interlayer along the axial direction of the main kiln body to form a second spiral channel in the outer interlayer; The fifth spiral plate and the second spiral plate rotate in opposite directions; the fifth spiral plate is used to drive the material to move along the fifth spiral channel under the drive of the second driving member; the second spiral plate is used to drive the material to move along the second spiral channel under the drive of the second driving member.

8. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 7, characterized in that, There are multiple fifth spiral plates, which are arranged at intervals along the axial direction of the main kiln body to form multiple fifth spiral channels.

9. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 7, characterized in that, There are multiple second spiral plates, which are arranged at intervals along the axial direction of the main kiln body to form multiple second spiral channels.

10. The system equipment for energy-saving and efficient calcination of modified phosphogypsum using waste heat outside the main kiln as described in claim 6, characterized in that, The second end of the outer interlayer extends outward along the axial direction of the main kiln body relative to the second end of the inner interlayer.

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