A phosphogypsum granulation production line

Abstract

The present invention relates to the field of phosphogypsum processing equipment and discloses a phosphogypsum granulation production line, comprising: a first processing component, a second processing component, a strand-transferring granulation device, a first conveying mechanism, a second conveying mechanism, and a blanking machine. The first processing component of the phosphogypsum granulation production line provided by the present invention can process the inner layer of phosphogypsum slag lightweight aggregate, and the second processing component, in conjunction with the strand-transferring granulation device, can process the outer layer of phosphogypsum slag lightweight aggregate. Thus, the phosphogypsum granulation production line provided by the present invention can produce phosphogypsum slag lightweight aggregate.

Description

Technical Field

[0001] The present invention relates to the field of phosphogypsum processing equipment, in particular to a phosphogypsum granulation production line. Background Art

[0002] Phosphogypsum slag lightweight aggregate is a new type of building material developed by the applicant. Its main raw material is modified phosphogypsum, including an inner layer and an outer layer wrapped around the inner layer. Due to different strength requirements, the material ratios of the inner and outer layers of the phosphogypsum slag lightweight aggregate are also different.

[0003] Modified phosphogypsum is made by modifying phosphogypsum with modified materials such as cement, quicklime, and carbide slag, which changes the acidity of phosphogypsum to alkalinity and converts the soluble P2O5 and F - A material obtained by adjusting it to a water-insoluble substance. Currently, phosphogypsum has a low utilization rate and is primarily disposed of as solid waste, which not only occupies a large amount of land but also causes serious environmental pollution. Using phosphogypsum to prepare phosphogypsum slag lightweight aggregate can effectively protect the environment and improve energy utilization. However, the current lack of relevant equipment for preparing phosphogypsum slag lightweight aggregate has limited the application of phosphogypsum and severely restricted the development of the phosphogypsum industry. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a phosphogypsum granulation production line capable of preparing phosphogypsum slag lightweight aggregate.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a phosphogypsum granulation production line, comprising: a first processing component, a second processing component, a strand granulation device, a first conveying mechanism, a second conveying mechanism and a blanking machine;

[0007] The first processing assembly includes: a first feeder, a first batching tank, a first weighing machine, a first mixer, a stock granulator, a disc granulator, a first conveying device, a second conveying device, a third conveying device, a fourth conveying device, a fifth conveying device and a sixth conveying device;

[0008] The first feeder is used to accommodate the modified phosphogypsum, and the first conveying device is used to convey the modified phosphogypsum output by the first feeder to the first mixer;

[0009] The first ingredient tank is used to contain the first ingredient, and the second conveying device is used to convey the first ingredient in the first ingredient tank to the first weighing machine;

[0010] The third conveying device is used to convey the first ingredient quantitatively output by the first weighing machine to the first mixer;

[0011] The first mixer is used to mix the modified phosphogypsum and the first ingredient transported into the first mixer to obtain a first mixture;

[0012] The fourth conveying device is used to convey the first mixture outputted from the first mixer to the strand granulator, and the strand granulator is used to produce first pellets;

[0013] The fifth conveying device is used to convey the first pellets output by the rotary granulator and the remaining first mixture to the disc granulator, and the disc granulator produces second pellets;

[0014] The sixth conveying device is used to convey the second pellets output by the disc granulator to the first conveying mechanism;

[0015] The second processing assembly includes: a second feeder, a second batching tank, a second weighing machine, a second mixer, a first conveyor, a second conveyor, a third conveyor and a fourth conveyor;

[0016] The second feeder is used to accommodate the modified phosphogypsum, and the first conveyor is used to convey the modified phosphogypsum output by the second feeder to the second mixer;

[0017] The second ingredient tank is used to contain the second ingredient, and the second conveyor is used to convey the second ingredient in the second ingredient tank to the second weighing machine;

[0018] The third conveyor is used to convey the second ingredient quantitatively output by the second weighing machine to the second mixer;

[0019] The second mixer is used to mix the modified phosphogypsum and the second ingredient to obtain a second mixture;

[0020] The fourth conveyor is used to convey the second mixture conveyed by the second mixer to the first conveying mechanism;

[0021] The first conveying mechanism is used to convey the second mixture and the second pellets to the strand-converting granulation device, and the strand-converting granulation device produces third pellets;

[0022] The second conveying mechanism is used to convey the third pellets output by the strand conversion and granulation device to the blanking machine, and the blanking machine is used to convey the third pellets to a preset position.

[0023] Optionally, the first feeder and the second feeder have the same structure, and both the first feeder and the second feeder include: a bracket;

[0024] A hopper, the hopper being arranged on the bracket, and the modified phosphogypsum being arranged in the hopper;

[0025] a stirring device for stirring the modified phosphogypsum in the hopper;

[0026] A dual-powered belt conveyor includes a belt, two drive rollers and two first drive devices. The two first drive devices are respectively connected to the two drive rollers to drive the two drive rollers to rotate. The belt is sleeved on the two drive rollers, and the discharge port of the hopper is arranged opposite to the belt.

[0027] Optionally, the stirring device includes a second driving device, a stirring shaft, and a plurality of stirring blades arranged in sequence along the axial direction of the stirring shaft, one end of the stirring shaft is rotatably connected to the first side wall of the hopper, the other end of the stirring shaft passes through the second side wall of the hopper and is rotatably connected to the second side wall of the hopper, the first side wall and the second side wall are arranged opposite to each other, and the second driving device is transmission-connected to the other end of the stirring shaft to drive the stirring shaft to rotate.

[0028] Optionally, the first feeder and the second feeder each further include a vibration device, wherein the vibration device is disposed on the hopper and is used to drive the hopper to vibrate.

[0029] Optionally, the first feeder and the second feeder each further include a travel switch, which is connected between the power supply and the vibration device, and is used to control the on / off between the vibration device and the power supply. The travel switch is configured as a normally closed switch, and the travel switch is disposed above the belt and is disconnected in response to the thickness value of the modified phosphogypsum transported on the belt.

[0030] Optionally, the first weighing machine is a first subtraction weighing machine, and the second weighing machine is a second subtraction weighing machine.

[0031] Optionally, the first weight reduction weighing machine and the second weight reduction weighing machine have the same structure, and both the first weight reduction weighing machine and the second weight reduction weighing machine include:

[0032] Support structure;

[0033] a silo and at least two weight detection mechanisms, all of which are arranged along the circumference of the silo, and the silo is connected to the support structure via the weight detection mechanisms;

[0034] A stirring mechanism, the stirring mechanism is arranged inside the silo;

[0035] A power mechanism is connected to the stirring mechanism to drive the stirring mechanism to rotate.

[0036] Optionally, the first reduction weighing machine and the second reduction weighing machine also include a control element, a first limit switch and a second limit switch, the first limit switch and the second limit switch are both arranged inside the silo, and the first limit switch and the second limit switch are respectively arranged at both ends of the height direction of the silo, and the first limit switch, the second limit switch and the third conveying device are all communicatively connected to the control element.

[0037] Optionally, the blanking machine includes a supporting device, a horizontal conveying section, two inclined conveying sections, a first driving mechanism and a second driving mechanism;

[0038] The support device is supported at the middle position of the horizontal conveying section, and the support device and the horizontal conveying section are rotatably connected, and the rotation axis of the two is arranged in the vertical direction;

[0039] There are two inclined conveying sections, the top ends of the two inclined conveying sections are rotatably connected to the two ends of the horizontal conveying section respectively, and the rotation axes between the two inclined conveying sections and the horizontal conveying section are both arranged in the vertical direction;

[0040] The first driving mechanism is used to drive the supporting device and the horizontal conveying section to rotate relative to each other;

[0041] The second driving mechanism is used to drive the top end of the inclined conveying section and one end of the horizontal conveying section to rotate relative to each other around a vertical direction.

[0042] Optionally, the blanking machine also includes a first connecting structure, a second connecting structure and a lifting mechanism, the first connecting structure is rotatably connected to the horizontal conveying section, and the rotation axes of the two are arranged in the vertical direction, the second connecting structure is fixedly connected to the inclined conveying section, the second connecting structure is rotatably connected to the first connecting structure, and the rotation axes of the two are arranged in the horizontal direction, and the rotation axes of the two are perpendicular to the material conveying direction of the horizontal conveying section, the lifting mechanism is fixedly arranged above the inclined conveying section, and the flexible lifting member of the lifting mechanism is connected to the inclined conveying section.

[0043] Compared with the prior art, the present invention has achieved the following technical effects:

[0044] The first processing component of the phosphogypsum granulation production line provided by the present invention can realize the inner layer processing of phosphogypsum slag lightweight aggregate, and the second processing component cooperates with the strand granulation device to realize the outer layer processing of phosphogypsum slag lightweight aggregate. In this way, the phosphogypsum granulation production line provided by the present invention can realize the preparation of phosphogypsum slag lightweight aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A schematic diagram of the structure of phosphogypsum granulation provided in an embodiment of the present invention;

[0047] Figure 2 A perspective view of a first feeder provided in an embodiment of the present invention;

[0048] Figure 3 This is a front view of a first feeder provided in an embodiment of the present invention;

[0049] Figure 4 A side view of a first feeder provided in an embodiment of the present invention;

[0050] Figure 5 A three-dimensional diagram of a first weight reduction weighing machine provided in an embodiment of the present invention;

[0051] Figure 6 It is a front view of a first weight loss weighing machine provided in an embodiment of the present invention;

[0052] Figure 7 A schematic structural diagram of a stirring mechanism of a first weighing machine provided in an embodiment of the present invention;

[0053] Figure 8 Schematic diagram of the matching mode of the first connecting member, the second connecting member and the connecting seat of the first weight reduction weighing machine provided in an embodiment of the present invention;

[0054] Figure 9 This is a front view of the blanking machine provided in an embodiment of the present invention;

[0055] Figure 10 for Figure 9 An enlarged view of part I;

[0056] Figure 11 for Figure 9 A magnified view of Part II;

[0057] Figure 12A perspective view of a blanking machine provided in an embodiment of the present invention;

[0058] Figure 13 for Figure 12 Enlarged view of Part III.

[0059] Figures 1-13 1. First feeder; 101. Support; 102. Hopper; 103. Grille; 104. Stirring shaft; 105. Stirring blade; 106. Belt; 107. Transmission roller; 108. First driving device; 109. Second driving device; 110. Vibrating device; 111. Limit switch; 112. Inspection frame; 2. First reduction weighing machine; 201. Support structure; 202. Top cover; 203. Weight detection mechanism; 204. Cylindrical cylinder; 205. Conical cylinder; 206. Second limit switch; 207. Center shaft; 208. First stirring blade; 209. Second stirring blade; 210. First connecting member; 211. Second connecting member; 212. Connecting seat; 213. Screw conveyor; 214. Power mechanism; 3. Blanking machine; 301. Support device; 302. Horizontal conveying section; 3 03. Inclined conveying section; 304. First drive mechanism; 305. First rotating shaft; 306. First gear; 307. Second drive mechanism; 308. Second rotating shaft; 309. Second gear; 310. First connecting structure; 311. Second connecting structure; 312. First driving roller; 313. Second driving roller; 4. Second feeder; 5. Second loss-in-weight weighing machine; 6. First conveying mechanism; 7. First batching tank; 8. Second batching tank; 9. First mixer; 10. Strand granulator; 11. Disc granulator; 12. First conveying device; 13. Second conveying device; 14. Second conveying mechanism; 15. Fourth conveying device; 16. Fifth conveying device; 17. Sixth conveying device; 18. Second mixer; 19. First conveyor; 20. Second conveyor; 21. Strand granulator; 22. Fourth conveyor. DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] The object of the present invention is to provide a phosphogypsum granulation production line capable of preparing phosphogypsum slag lightweight aggregate.

[0062] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] refer to Figures 1-13 As shown, the phosphogypsum granulation production line provided in the embodiment of the present invention includes: a first processing component, a second processing component, a strand granulation device 21, a first conveying mechanism 6, a second conveying mechanism 14 and a blanking machine 3.

[0064] The first processing component is used to realize the inner layer processing of phosphogypsum slag lightweight aggregate. The first processing component includes: a first feeder 1, a first batching tank 7, a first weighing machine, a first mixer 9, a stock granulator 10, a disc granulator 11, a first conveying device 12, a second conveying device 13, a third conveying device, a fourth conveying device 15, a fifth conveying device 16 and a sixth conveying device 17.

[0065] The first feeder 1 is used to accommodate the modified phosphogypsum, and the first conveying device 12 is used to convey the modified phosphogypsum output by the first feeder 1 to the first mixer 9.

[0066] The first batching tank 7 is used to accommodate the first ingredient, the second conveying device 13 is used to convey the first ingredient in the first batching tank 7 to the first weighing machine, and the third conveying device is used to convey the first ingredient quantitatively output by the first weighing machine to the first mixer 9. It should be noted that one first batching tank 7 corresponds to one second conveying device 13, one first weighing machine and one third conveying device. In addition, as an optional implementation, in this embodiment, one first batching tank 7 is used to accommodate one first ingredient. When multiple first ingredients need to be added, multiple first accessory tanks are set accordingly, and multiple second conveying devices 13, one first weighing machine and one third conveying device are set accordingly. In this embodiment, the inner layer of the phosphogypsum slag lightweight aggregate specifically adds two ingredients, slag and cement, and two first batching tanks 7 are set accordingly.

[0067] The first mixer 9 is used to mix the modified phosphogypsum delivered to the first mixer 9 with the first ingredient to produce a first mixture. The fourth conveying device 15 is used to convey the first mixture output from the first mixer 9 to the strand granulator 10, where the strand granulator 10 produces first pellets. The fifth conveying device 16 is used to convey the first pellets output from the strand granulator 10 and the remaining first mixture to the disc granulator 11, where the disc granulator 11 produces second pellets. The coordination of the strand granulator 10 and the disc granulator 11 achieves better inner-layer molding of the phosphogypsum slag lightweight aggregate and higher molding efficiency. Currently, pelletizing processes generally utilize only the strand granulator 10 or the disc granulator 11 for pelletizing. It should be noted that the first mixture delivered to the strand granulator 10 by the fourth conveying device 15 is partially formed into the first pellets, with the remaining portion being the remaining first mixture described above.

[0068] The sixth conveying device 17 is used to convey the second pellets output by the disc granulator 11 to the first conveying mechanism 6, where the second pellets are the inner layer of the phosphogypsum slag lightweight aggregate.

[0069] The second processing component cooperates with the strand granulation device 21 to realize the outer layer processing of the phosphogypsum slag lightweight aggregate. The second processing component includes: a second feeder 4, a second batching tank 8, a second weighing machine, a second mixer 18, a first conveyor 19, a second conveyor 20, a third conveyor and a fourth conveyor 22.

[0070] The interior of the second feeder 4 is used to accommodate the modified phosphogypsum, and the first conveyor 19 is used to convey the modified phosphogypsum output by the second feeder 4 to the second mixer 18.

[0071] The second batching tank 8 is used to accommodate the second ingredient, the second conveyor 20 is used to convey the second ingredient in the second batching tank 8 to the second weighing machine, and the third conveyor is used to convey the second ingredient quantitatively output by the second weighing machine to the second mixer 18. Similarly, one second batching tank 8 corresponds to one second conveyor 20, one second weighing machine and one third conveyor. As an optional implementation method, in this embodiment, one second batching tank 8 is used to accommodate one second ingredient. When multiple second ingredients need to be added, multiple second accessory tanks are set accordingly, and multiple second conveyors 20, second weighing machines and a third conveyor are set accordingly. In this embodiment, two second ingredients, slag and cement, are specifically added to the outer layer of the phosphogypsum slag lightweight aggregate, and these two second batching tanks 8 are set accordingly.

[0072] The second mixer 18 is used to mix the modified phosphogypsum and the second ingredient to produce a second mixture. The fourth conveyor 22 is used to transport the second mixture from the second mixer 18 to the first conveying mechanism 6. The first conveying mechanism 6 is used to transport the second mixture and the second pellets to the strand conversion and granulation device 21, where the strand conversion and granulation device 21 produces third pellets. The second conveying mechanism 14 is used to transport the third pellets output from the strand conversion and granulation device 21 to the blanking machine 3, which is used to transport the third pellets to a predetermined location. After the third pellets are aged for a period of time at the predetermined location, the phosphogypsum slag lightweight aggregate required by the present invention is obtained.

[0073] It should be noted that the inner and outer layers of the phosphogypsum slag lightweight aggregate prepared by the phosphogypsum granulation production line provided in this embodiment are both made of modified phosphogypsum, slag and cement, but the ratios of the inner and outer layers and the modified phosphogypsum, slag and cement are different.

[0074] In addition, modified phosphogypsum is a material obtained by modifying phosphogypsum with cement, quicklime and carbide slag, adjusting the acidity of phosphogypsum to alkalinity, and adjusting the water-soluble P2O5 and F- in phosphogypsum to water-insoluble substances.

[0075] The phosphogypsum granulation production line provided by the present invention can realize the preparation of phosphogypsum slag lightweight aggregate, improve the utilization rate of phosphogypsum, protect the environment, and at the same time the entire preparation process has a high degree of automation, saving time and labor.

[0076] In this embodiment, in order to improve processing efficiency, the number of the first processing components is at least two, and the specific number is set according to actual needs. Figure 1 The number of the first processing components is specifically two.

[0077] In this embodiment, the second conveying device 13, the third conveying device, the second conveyor 20, and the third conveyor have the same structure, for example, they are all screw conveying devices. The first conveying device 12, the fourth conveying device 15, the fifth conveying device 16, the sixth conveying device 17, the first conveyor 19, the third conveyor, the first conveying mechanism 6, and the second conveying mechanism 14 have the same structure, for example, they are all belt conveyors. The first mixer 9 and the second mixer 18 have the same structure, for example, they are both twin-shaft mixers. The strand granulator 10 and the strand granulator 21 have the same structure. The specific structures of the strand granulator 10, the strand granulator 21, and the disc granulator 11 are all prior art and will not be repeated here.

[0078] In this embodiment, reference Figure 2-Figure 3 As shown, the first feeder 1 and the second feeder 4 have the same structure. The first feeder 1 and the second feeder 4 both include: a bracket 101, a hopper 102, a stirring device and a dual-power belt conveyor.

[0079] Among them, the hopper 102 is set on the bracket 101, and the stirring device is used to stir the modified phosphogypsum inside the hopper 102. The stirring action of the stirring device is used to promote material discharge and avoid blockage of the discharge port of the hopper 102. The discharge port of the hopper 102 is arranged opposite to the feed end of the dual-powered belt conveyor to transport the modified phosphogypsum discharged from the feeder to the dual-powered belt conveyor.

[0080] The dual-powered belt conveyor includes a belt 106, two drive rollers 107, and two first drive devices 108. The two first drive devices 108 are respectively connected to the two drive rollers 107 to drive the two drive rollers 107. The belt 106 is sleeved onto the two drive rollers 107, and the two drive rollers 107 are connected to each other through the belt 106. The discharge port of the hopper 102 is located opposite the belt 106. The first drive devices 108 can be connected to their corresponding drive rollers 107 using, for example, a sprocket and chain. Specifically, a driven sprocket can be provided on the drive rollers 107, and a driving sprocket can be provided on the first drive devices 108, which are connected to the driven sprockets via a chain. Modified phosphogypsum has a high viscosity, and the inclusion of a stirring device prevents clogging of the discharge port of the hopper 102. Modified phosphogypsum is heavy, and the inclusion of two first drive devices 108 provides the feeder with more power, effectively reducing the possibility of power shortages.

[0081] In this embodiment, if Figure 2-Figure 3 As shown, the stirring device includes a second driving device 109, a stirring shaft 104 and a plurality of stirring blades 105 arranged in sequence along the axial direction of the stirring shaft 104. One end of the stirring shaft 104 is rotatably connected to the first side wall of the hopper 102, and the other end of the stirring shaft 104 passes through the second side wall of the hopper 102 and is rotatably connected to the second side wall of the hopper 102. The first side wall and the second side wall are arranged opposite to each other, and the second driving device 109 is transmission-connected to the other end of the stirring shaft 104 to drive the stirring shaft 104 to rotate.

[0082] In this embodiment, the first driving device 108 is a first motor, and the second driving device 109 is a second motor. Of course, the first driving device 108 can also be selected from other mechanisms capable of driving the transmission roller 107 to rotate, and the second driving device 109 can also be selected from other mechanisms capable of driving the stirring shaft 104 to rotate.

[0083] In this embodiment, if Figure 2-Figure 4 As shown, the first feeder 1 and the second feeder 4 also include a vibration device 110, which is provided on the hopper 102 and is used to drive the hopper 102 to vibrate. In specific use, when the discharge port is blocked, the vibration device 110 is activated to vibrate the hopper 102, thereby further driving the modified phosphogypsum to fall.

[0084] In this embodiment, if Figure 2-Figure 3As shown, both the first feeder 1 and the second feeder 4 further include a limit switch 111, which is connected between the power supply and the vibrating device 110. The limit switch 111 is used to control the on / off state between the vibrating device 110 and the power supply. The limit switch 111 is configured as a normally closed switch (always closed when not triggered). The limit switch 111 is disposed above the belt 106 and is opened in response to the thickness of the modified phosphogypsum conveyed on the belt 106. The thickness of the modified phosphogypsum conveyed on the belt 106 can be used to determine whether the discharge port of the hopper 102 is blocked. When the thickness of the modified phosphogypsum conveyed on the belt 106 is greater than or equal to a preset value (determined according to actual needs), the discharge port is unblocked. At this time, the thickness of the modified phosphogypsum conveyed on the belt 106 is sufficient to trigger the limit switch 111, causing the limit switch 111 to be in an off state, thereby cutting off the power supply between the power supply and the vibrating device 110, and the vibrating device 110 is inoperative. When the thickness of the modified phosphogypsum transported on the belt 106 is less than the preset value, the discharge port is blocked. At this time, the thickness of the modified phosphogypsum transported on the belt 106 is not enough to trigger the limit switch 111, so that the limit switch 111 is in a closed state, and then the power supply between the power supply and the vibration device 110 is closed, and the vibration device 110 starts to work.

[0085] Specifically, in this embodiment, a vibration motor is used as the vibration device 110 , but the vibration device 110 is not limited to being a vibration motor, and may also be other mechanisms that can drive the hopper 102 to vibrate.

[0086] Specifically, the travel switch 111 is fixed on the outer side wall of the hopper 102 .

[0087] In this embodiment, if Figure 2-Figure 4 As shown, the first feeder 1 and the second feeder 4 also include a grid 103. A feed port is provided at the top of the hopper 102. The grid 103 is arranged opposite to the feed port, and the grid 103 is arranged above the feed port. In specific use, when the particle size of the modified phosphogypsum is larger than the size of the hole on the grid 103, the modified phosphogypsum cannot pass through the grid 103 and enter the interior of the hopper 102. Only when the particle size of the modified phosphogypsum is smaller than or equal to the size of the hole on the grid 103 can the modified phosphogypsum enter the interior of the hopper 102. By providing the grid 103, large-particle modified phosphogypsum (modified phosphogypsum larger than the size of the hole on the grid 103) can be prevented from entering the interior of the hopper 102, thereby making the discharge port less likely to be blocked.

[0088] Specifically, the discharge port is provided at the bottom end of the hopper 102 .

[0089] In this embodiment, in order to facilitate maintenance, the first feeder 1 and the second feeder 4 also include a maintenance frame 112, and the maintenance frame 112 is arranged on one side of the bracket 101.

[0090] In this embodiment, the first weighing machine is a first subtractive weighing machine 2 , and the second weighing machine is a second subtractive weighing machine 5 .

[0091] In this embodiment, reference Figure 5-Figure 8 As shown, the first weight reduction weighing machine 2 and the second weight reduction weighing machine 5 have the same structure. Both the first weight reduction weighing machine 2 and the second weight reduction weighing machine 5 include: a support structure 201, a silo, a stirring mechanism, a power mechanism and at least two weight detection mechanisms 203.

[0092] Specifically, the support structure 201 plays a role of overall support. When in use, the support device is supported on the ground. The support structure 201 is, for example, a support frame.

[0093] The interior of the silo is hollow and is used to hold modified materials. The silo is provided with a feed port and a discharge port. The feed port of the silo is used to feed materials into the silo, and the discharge port of the silo is used to discharge the modified materials inside the silo.

[0094] All weight detection mechanisms 203 are arranged along the circumference of the silo, and the silo is connected to the support structure 201 through the weight detection mechanism 203. One end of each weight detection mechanism 203 is connected to the support structure 201, and the other end is connected to the silo. The weight detection mechanism 203 is, for example, an S-type weighing sensor.

[0095] The stirring mechanism is arranged inside the silo, and is used to stir the modified material in the silo.

[0096] The power mechanism is connected to the stirring mechanism to drive the stirring mechanism to rotate. The driving device mechanism is, for example, a motor.

[0097] By setting up a stirring mechanism in the silo and using the stirring mechanism to drive the modified material to move, it is possible to effectively prevent the modified material from blocking the silo outlet. Compared with traditional weight loss weighing devices, the weight loss weighing device provided by the present invention has a wider range of applications.

[0098] In this embodiment, the first weight reduction weighing machine 2 and the second weight reduction weighing machine 5 also include a control element, a first limit switch and a second limit switch 206. The control element is, for example, a controller, more specifically, a PLC controller. The first limit switch and the second limit switch 206 are both arranged inside the silo, and the first limit switch and the second limit switch 206 are respectively arranged at both ends of the silo height direction. For example, the weight reduction weighing device is arranged according to Figure 5In the illustrated arrangement, the first limit switch is located at the top of the silo, and the second limit switch 206 is located at the bottom. The feed port is connected to a feed mechanism for conveying the modified material into the silo, referred to as the second conveying device 13 or the second conveyor 20. The first limit switch, the second limit switch 206, and the feed mechanism are all in communication with a control element, which receives signals from the first and second limit switches 206 and controls the operation of the feed mechanism accordingly.

[0099] Specifically, when the height of the modified material in the silo is lower than the height of the second limit switch 206, the modified material cannot trigger the second limit switch 206, and the second limit switch 206 is in a non-triggered state. At this time, the control element controls the feeding mechanism to feed the material into the silo. When the height of the silo reaches the height of the first limit switch, the modified material triggers the first limit switch, and the first limit switch is in a triggered state. At this time, the control element controls the feeding mechanism to stop feeding. By providing the first limit switch and the second limit switch 206, and ensuring that the first limit switch, the second limit switch 206, and the feeding mechanism are all in communication with the control element, automatic feeding of the reduction-in-weight weighing device can be achieved.

[0100] It should also be noted that how the control element specifically controls the operation of the feeding mechanism according to the signals of the first limit switch and the second limit switch 206 belongs to the existing technology and will not be described in detail here.

[0101] In this embodiment, if Figure 7 As shown, the stirring mechanism includes a central shaft 207 and a plurality of first stirring blades 208. All first stirring blades 208 are arranged in sequence along the height direction of the central shaft 207. Each first stirring blade 208 is fixedly connected to the central shaft 207. Preferably, any two adjacent first stirring blades 208 are staggered.

[0102] Furthermore, if Figure 7 As shown, the stirring mechanism also includes multiple second stirring blades 209, all of which are arranged at the bottom end of the central shaft 207, all of which are arranged along the circumference of the central shaft 207, and each second stirring blade 209 is fixedly connected to the central shaft 207.

[0103] In this embodiment, if Figure 5As shown, the silo includes a top cover 202, a cylindrical tube 204 and a conical tube 205. One end of the cylindrical tube 204 is connected to the large end of the conical tube 205 and is in communication. The cylindrical tube 204 and the conical tube 205 are coaxially arranged, and the diameter of the large end of the conical tube 205 is equal to the diameter of the cylindrical tube 204. A through hole is provided at the top of the supporting structure 201, and the other end of the cylindrical tube 204 extends into the through hole. There is a gap between the outer wall of the cylindrical tube 204 and the inner wall of the through hole. The top cover 202 blocks the other end of the cylindrical tube 204, and a feed port is provided on the top cover 202, that is, the feed port of the silo. The small end of the conical tube 205 is provided with a discharge port, that is, the discharge port of the silo. More specifically, the small end of the conical tube 205 is open and directly serves as the discharge port.

[0104] Furthermore, all first stirring blades 208 are arranged in the conical cylinder 205, and since the conical cylinder 205 is a conical structure, the lengths of all first stirring blades 208 are not equal. For example, the lengths of all first stirring blades 208 decrease successively from the top of the silo to the bottom of the silo.

[0105] Furthermore, as an optional implementation, the power mechanism is provided on the top cover 202 .

[0106] In this embodiment, if Figure 8 As shown, the first reduction weighing machine 2 and the second reduction weighing machine 5 also include multiple first connecting parts 210, multiple second connecting parts 211 and multiple connecting seats 212. The weight detection mechanism 203, the first connecting part 210, the second connecting part 211 and the connecting seat 212 correspond to each other one by one. One end of the weight detection mechanism 203 is connected to the support structure 201 through its corresponding first connecting part 210, and each connecting seat 212 is arranged on the silo. The other end of the weight detection mechanism 203 is connected to its corresponding connecting seat 212 through its corresponding second connecting part 211.

[0107] Furthermore, as an optional embodiment, the connecting seat 212 is provided on the cylindrical barrel 204 .

[0108] Furthermore, in order to facilitate disassembly and assembly, the first connecting member 210 is detachably connected to the weight detection mechanism 203 and the support structure 201 , and the second connecting member 211 is detachably connected to the connecting seat 212 and the weight detection mechanism 203 .

[0109] In this embodiment, the first weight reduction weighing machine 2 and the second weight reduction weighing machine 5 also include a screw conveyor 213. The specific structure of the screw conveyor 213 belongs to the existing technology. The discharge port of the silo is connected to the screw conveyor 213, and the screw conveyor 213 is used to transport the modified material discharged from the silo out.

[0110] In this embodiment, reference Figures 9-13 As shown, the blanking machine 3 includes: a supporting device 301, a horizontal conveying section 302 and an inclined conveying section 303. Specifically, the supporting device 301 is used to support the horizontal conveying section 302. The supporting device 301 can select a mechanism that can perform its supporting function, and the detailed structure is determined according to actual needs. The two ends of the horizontal conveying section 302 are flush, and the inclined conveying section 303 is tilted. The top end of the inclined conveying section 303 is rotatably connected to one end of the horizontal conveying section 302, and the rotation axis of the two is perpendicular to the material conveying direction of the horizontal conveying section 302. It should be noted that since the inclined conveying section 303 is tilted, the two ends of the inclined conveying section 303 must be one end higher and the other end lower. The higher end of the two ends of the inclined conveying section 303 is the top end of the inclined conveying section 303, and the lower end is the bottom end of the inclined conveying section 303.

[0111] When the blanking machine 3 needs to be stored or transported, the inclined conveying section 303 is rotated and can be rotated to the bottom of the horizontal conveying section 302. At this time, the horizontal conveying section 302 and the inclined conveying section 303 partially overlap, and the overall space occupied by the blanking machine 3 is reduced. The space required for transportation and storage of the blanking machine 3 is smaller, and storage and transportation are more convenient.

[0112] As an optional embodiment, the horizontal conveying section 302 includes a first bracket, a first driving roller 312, a first driven roller, a first belt, and a first power mechanism. The first driving roller 312 and the first driven roller are both rotatably mounted on the first bracket. The first belt is mounted outside the first driving roller 312 and the first driven roller. The first driving roller 312 and the first driven roller are connected by the first belt transmission. The first power mechanism is in transmission connection with the first driving roller 312 to drive the first driving roller 312 to rotate. The inclined conveying section 303 includes a second bracket, a second driving roller 313, a second driven roller, a second belt, and a second power mechanism. The second driving roller 313 and the second driven roller are both rotatably mounted on the second bracket. The second belt is mounted outside the second driving roller 313 and the second driven roller. The second driving roller 313 and the second driven roller are connected by the second belt transmission. The second power mechanism is in transmission connection with the second driving roller 313 to drive the second driving roller 313 to rotate. The first power drive mechanism 214 and the second power drive mechanism 214 are, for example, motors. During specific use, the first power mechanism and the second power mechanism respectively drive the first active roller 312 and the second active roller 313 to rotate, and then respectively drive the first belt and the second belt to rotate to complete the material transportation.

[0113] In this embodiment, the top ends of the two inclined conveying sections 303 are rotatably connected to the two ends of the horizontal conveying section 302 , and the rotation axes between the two inclined conveying sections 303 and the horizontal conveying section 302 are all along the vertical direction.

[0114] Furthermore, if Figure 9 As shown, the support device 301 is supported in the middle of the horizontal conveying section 302. The support device 301 and the horizontal conveying section 302 are rotatably connected, and the rotation axis of the support device 301 and the horizontal conveying section 302 is arranged in the vertical direction. This arrangement improves the overall flexibility of the device. During use, the third pellet can be transported to different preset locations by rotating the support device 301 and the horizontal conveying section 302 relative to each other.

[0115] Furthermore, the blanking machine 3 further includes a first driving mechanism 304 , which is used to drive the supporting device 301 and the horizontal conveying section 302 to rotate relative to each other.

[0116] Furthermore, if Figure 10 As shown, the blanking machine 3 also includes a first rotating shaft 305 and a first gear 306. One end of the first rotating shaft 305 is rotatably connected to the support device 301, and the other end is fixedly connected to the horizontal conveying section 302. The first driving mechanism 304 is a first motor. The first gear 306 is mounted on the first output shaft of the first motor and is in driving connection with the first output shaft so that the two can rotate synchronously. The first rotating shaft 305 is provided with a plurality of first transmission teeth, which mesh with the teeth on the first gear 306. The axis of the first rotating shaft 305 is arranged in a vertical direction. The first driving mechanism 304 is, for example, fixedly mounted on the support device 301.

[0117] During specific use, the first output shaft of the first motor rotates through the first gear 306 and the first transmission gear to drive the first rotating shaft 305 to rotate, and then the first rotating shaft 305 drives the horizontal conveying section 302 to rotate as a whole.

[0118] In this embodiment, the blanking machine 3 further includes a second driving mechanism 307 , which is used to drive the top end of the inclined conveying section 303 and one end of the horizontal conveying section 302 to rotate around the vertical direction.

[0119] Furthermore, if Figure 13 As shown, the blanking machine 3 also includes a second rotating shaft 308 and a second gear 309. The second driving mechanism 307 is a second motor. The second gear 309 is mounted on the second output shaft of the second motor and is in driving connection with the second output shaft so that the two can rotate synchronously. The top of the inclined conveying section 303 is connected to the second rotating shaft 308, which is rotatably connected to one end of the horizontal conveying section 302. The second rotating shaft 308 is provided with a plurality of second transmission teeth, which mesh with the teeth on the second gear 309. The axis of the second rotating shaft 308 rotates in the vertical direction.

[0120] In this embodiment, if Figure 11As shown, the blanking machine 3 further includes a first connecting structure 310 and a second connecting structure 311. The first connecting structure 310 is rotatably connected to the horizontal conveying section 302, and the rotation axes of the two are perpendicular to the material conveying direction of the horizontal conveying section 302. The second connecting structure 311 is fixedly connected to the inclined conveying section 303. The second connecting structure 311 is rotatably connected to the first connecting structure 310, and the rotation axes of the two are arranged in the horizontal direction and perpendicular to the material conveying direction of the horizontal conveying section 302. The first connecting structure 310 is, for example, a first connecting frame, and the second connecting structure 311 is, for example, a second connecting frame. The first connecting structure 310 is rotatably connected to the horizontal conveying section 302, allowing the inclined conveying section 303 to rotate vertically. The first connecting structure 310 is rotatably connected to the second connecting structure 311, allowing the inclined conveying section 303 to rotate horizontally relative to the horizontal conveying section 302. This arrangement not only allows the inclined conveying section 303 to be stored below the horizontal conveying section 302, but also allows the inclined angle of the inclined conveying section 303, that is, the slope of the inclined conveying section 303, to be adjusted. This allows the third pellets to be smoothly conveyed to a predetermined position, effectively preventing damage to the third pellets caused by excessive impact due to a steep slope. The two inclined conveying sections 303 correspond to the two ends of the horizontal conveying section 302, and each inclined conveying section 303 is connected to the corresponding end of the horizontal conveying section 302 via the first connecting structure 310 and the second connecting structure 311.

[0121] Furthermore, the blanking machine 3 also includes a lifting mechanism, which is fixedly arranged above the inclined conveying section 303, and the flexible lifting member of the lifting mechanism is connected to the inclined conveying section 303. The lifting mechanism is, for example, an electric hoist, and the corresponding flexible lifting member is a chain of the electric hoist. During specific use, the lifting mechanism drives the inclined conveying section 303 to rise and fall, thereby realizing the relative rotation of the second connecting structure 311 and the first connecting structure 310, thereby realizing the adjustment of the inclination angle of the inclined conveying section 303. The flexible lifting member is, for example, connected to the end of the inclined conveying section 303 away from the horizontal conveying section 302, or connected to the middle of the inclined conveying section 303.

[0122] It should be noted that “horizontal” and “vertical” are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. Example

[0123] This embodiment includes some or all of the technical features of the first embodiment, with the difference being that the first feeder 1 and the second feeder 4 provided in this embodiment are not provided with a travel switch 111, but include a thickness detection device, which is used to detect the thickness of the modified phosphogypsum conveyed on the belt 106, and control the vibration device 110 to be turned on or off according to the thickness information detected by the thickness detection device.

[0124] Furthermore, the thickness detection device and the vibration device 110 are both connected to the control element. In the specific use process, the thickness detection device transmits the thickness information of the modified phosphogypsum conveyed on the belt 106 to the control element, and the control element

[0125] The control element controls the on / off timing of vibration device 110 based on the thickness information detected by the thickness detection device. When the thickness of the modified phosphogypsum conveyed on belt 106 falls below a preset value (determined based on actual needs), indicating a blockage at the discharge port, the control element activates vibration device 110, causing it to begin operating.

[0126] In order to avoid damage to the vibration device 110 due to long-term operation, the control element preferably controls the vibration device 110 to work intermittently. For example, the control element first controls the vibration device 110 to work for 5 minutes, then the control element controls the vibration device 110 to turn off for 5 minutes, and then the control element controls the vibration device 110 to turn on again and continue to work for 5 minutes, and so on. The cycle continues until the thickness detection device detects that the thickness value of the modified phosphogypsum transported on the belt 106 is equal to the preset value.

[0127] Specifically, the thickness detection device may adopt a thickness sensor, but is not limited to adopting a thickness sensor. It may be any mechanism that can detect the thickness of the modified phosphogypsum. This is just an example.

[0128] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A phosphogypsum granulation production line, characterized in that: include: A first processing assembly, a second processing assembly, a strand conversion and granulation device, a first conveying mechanism, a second conveying mechanism, and a blanking machine; The first processing assembly includes: a first feeder, a first batching tank, a first weighing machine, a first mixer, a stock granulator, a disc granulator, a first conveying device, a second conveying device, a third conveying device, a fourth conveying device, a fifth conveying device and a sixth conveying device; The first feeder is used to accommodate the modified phosphogypsum, and the first conveying device is used to convey the modified phosphogypsum output by the first feeder to the first mixer; The first ingredient tank is used to contain the first ingredient, and the second conveying device is used to convey the first ingredient in the first ingredient tank to the first weighing machine; The third conveying device is used to convey the first ingredient quantitatively output by the first weighing machine to the first mixer; The first mixer is used to mix the modified phosphogypsum and the first ingredient transported into the first mixer to obtain a first mixture; The fourth conveying device is used to convey the first mixture outputted from the first mixer to the strand granulator, and the strand granulator is used to produce first pellets; The fifth conveying device is used to convey the first pellets output by the rotary granulator and the remaining first mixture to the disc granulator, and the disc granulator produces second pellets; The sixth conveying device is used to convey the second pellets output by the disc granulator to the first conveying mechanism; the second processing assembly includes: a second feeder, a second batching tank, a second weighing machine, a second mixer, a first conveyor, a second conveyor, a third conveyor and a fourth conveyor; The second feeder is used to accommodate the modified phosphogypsum, and the first conveyor is used to convey the modified phosphogypsum output by the second feeder to the second mixer; The second ingredient tank is used to contain the second ingredient, and the second conveyor is used to convey the second ingredient in the second ingredient tank to the second weighing machine; The third conveyor is used to convey the second ingredient quantitatively output by the second weighing machine to the second mixer; The second mixer is used to mix the modified phosphogypsum and the second ingredient to obtain a second mixture; The fourth conveyor is used to convey the second mixture conveyed by the second mixer to the first conveying mechanism; The first conveying mechanism is used to convey the second mixture and the second pellets to the strand-converting granulation device, and the strand-converting granulation device produces third pellets; The second conveying mechanism is used to convey the third pellets output by the strand conversion and granulation device to the blanking machine, and the blanking machine is used to convey the third pellets to a preset position.

2. The phosphogypsum granulation production line according to claim 1, characterized in that: The first feeder and the second feeder have the same structure, and both the first feeder and the second feeder include: a bracket; A hopper, the hopper being arranged on the bracket, and the modified phosphogypsum being arranged in the hopper; a stirring device for stirring the modified phosphogypsum in the hopper; A dual-powered belt conveyor includes a belt, two drive rollers and two first drive devices. The two first drive devices are respectively connected to the two drive rollers to drive the two drive rollers to rotate. The belt is sleeved on the two drive rollers, and the discharge port of the hopper is arranged opposite to the belt.

3. The phosphogypsum granulation production line according to claim 2, characterized in that: The stirring device includes a second driving device, a stirring shaft, and a plurality of stirring blades arranged in sequence along the axial direction of the stirring shaft. One end of the stirring shaft is rotatably connected to the first side wall of the hopper, and the other end of the stirring shaft passes through the second side wall of the hopper and is rotatably connected to the second side wall of the hopper. The first side wall and the second side wall are arranged opposite to each other, and the second driving device is transmission-connected to the other end of the stirring shaft to drive the stirring shaft to rotate.

4. The phosphogypsum granulation production line according to claim 2, characterized in that: The first feeder and the second feeder each further include a vibration device, which is disposed on the hopper and is used to drive the hopper to vibrate.

5. The phosphogypsum granulation production line according to claim 4, characterized in that: The first feeder and the second feeder also include a travel switch, which is connected between the power supply and the vibration device. The travel switch is used to control the on-off between the vibration device and the power supply. The travel switch is configured as a normally closed switch. The travel switch is disposed above the belt and is disconnected in response to the thickness value of the modified phosphogypsum transported on the belt.

6. The phosphogypsum granulation production line according to claim 1, characterized in that: The first weighing machine is a first subtraction weighing machine, and the second weighing machine is a second subtraction weighing machine.

7. The phosphogypsum granulation production line according to claim 6, characterized in that: The first weight reduction weighing machine and the second weight reduction weighing machine have the same structure, and both the first weight reduction weighing machine and the second weight reduction weighing machine include: Support structure; a silo and at least two weight detection mechanisms, all of which are arranged along the circumference of the silo, and the silo is connected to the support structure via the weight detection mechanisms; A stirring mechanism, the stirring mechanism is arranged inside the silo; A power mechanism is connected to the stirring mechanism to drive the stirring mechanism to rotate.

8. The phosphogypsum granulation production line according to claim 7, characterized in that: The first loss-in-weight weighing machine and the second loss-in-weight weighing machine each further include a control element, a first limit switch and a second limit switch. The first limit switch and the second limit switch are both arranged inside the silo, and the first limit switch and the second limit switch are respectively arranged at both ends of the height direction of the silo. The first limit switch, the second limit switch and the third conveying device are all communicatively connected to the control element.

9. The phosphogypsum granulation production line according to claim 1, characterized in that: The blanking machine includes a supporting device, a horizontal conveying section, two inclined conveying sections, a first driving mechanism and a second driving mechanism; The support device is supported at the middle position of the horizontal conveying section, and the support device and the horizontal conveying section are rotatably connected, and the rotation axis of the two is arranged in the vertical direction; There are two inclined conveying sections, the top ends of the two inclined conveying sections are rotatably connected to the two ends of the horizontal conveying section respectively, and the rotation axes between the two inclined conveying sections and the horizontal conveying section are both arranged in the vertical direction; The first driving mechanism is used to drive the supporting device and the horizontal conveying section to rotate relative to each other; The second driving mechanism is used to drive the top end of the inclined conveying section and one end of the horizontal conveying section to rotate relative to each other around a vertical direction.

10. The phosphogypsum granulation production line according to claim 9, characterized in that: The blanking machine also includes a first connecting structure, a second connecting structure and a lifting mechanism. The first connecting structure is rotatably connected to the horizontal conveying section, and the rotation axes of the two are arranged in the vertical direction. The second connecting structure is fixedly connected to the inclined conveying section. The second connecting structure is rotatably connected to the first connecting structure, and the rotation axes of the two are arranged in the horizontal direction, and the rotation axes of the two are perpendicular to the material conveying direction of the horizontal conveying section. The lifting mechanism is fixedly arranged above the inclined conveying section, and the flexible lifting member of the lifting mechanism is connected to the inclined conveying section.

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