Phosphogypsum rapid dehydration device

Abstract

The utility model discloses a phosphogypsum rapid dehydration device which comprises a conveying cylinder, a box body and a drying box, the conveying cylinder is provided with a feeding port, a discharging port and a liquid discharging port, a conveying channel from the feeding port to the discharging port is formed in the conveying cylinder, and the liquid discharging port is communicated with the conveying channel; the box body is provided with a first cavity and a communication port communicated with the first cavity, a filter screen is arranged at the communication port, the communication port is communicated with the liquid outlet, and the first cavity is used for receiving liquid in the conveying channel; the drying box is provided with a discharging port, a heating structure is installed in the drying box, and the drying box communicates with the discharging port. According to the ardealite drying device, the conveying cylinder is arranged between the box body and the drying box, so that in the ardealite conveying process, a large amount of water in ardealite can enter the box body through the liquid outlet and the communication opening, namely, the water in the ardealite can be filtered out before drying, and the water content of the ardealite is reduced as much as possible; and then the drying box is used for heating, drying and dewatering, so that the overall dewatering efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the field of phosphogypsum dehydration, in particular to a phosphogypsum rapid dehydration device. Background Art

[0002] The existing phosphogypsum dehydration device dehydrates the phosphogypsum by heating and evaporation. Although it can dehydrate the phosphogypsum, the dehydration efficiency of this dehydration method is low when the water content of the phosphogypsum is high. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a phosphogypsum rapid dehydration device.

[0004] The technical solution of the utility model is as follows, including a conveying cylinder, a box body and a drying box, the conveying cylinder having a feed port, a discharge port and a liquid discharge port, a conveying channel from the feed port to the discharge port is formed in the conveying cylinder, and the liquid discharge port is connected to the conveying channel; the box body has a first cavity and a connecting port connected to the first cavity, a filter screen for filtering phosphogypsum is arranged at the connecting port, the connecting port is connected to the liquid discharge port, and the first cavity is used to receive the liquid in the conveying channel; the drying box has a drying chamber and a discharge port for discharging, the discharge port is connected to the drying chamber, a heating structure for heating phosphogypsum is installed in the drying box, and the drying chamber is connected to the discharge port.

[0005] The device for rapid dehydration of phosphogypsum according to the utility model has at least the following technical effects: by providing a conveying cylinder between the box body and the drying box, a large amount of moisture in the phosphogypsum can enter the box body through the drain port and the connecting port during the transportation of the phosphogypsum, that is, the moisture in the phosphogypsum can be filtered out before drying to reduce the moisture content of the phosphogypsum as much as possible, and then the drying box heats, dries and dehydrates it, so that the overall dehydration efficiency is higher.

[0006] Furthermore, a feeding screw is installed in the conveying channel, and a first motor for driving the feeding screw to rotate is installed in the conveying cylinder.

[0007] Furthermore, the discharge port is equipped with a valve for opening or closing the discharge port.

[0008] Furthermore, the top of the box body has a sinking groove, the sinking groove is provided with a sealing baffle, the connecting port is provided on the sealing baffle, the filter screen is provided on the sealing baffle, and the shape of the sealing baffle matches the shape of the conveying cylinder.

[0009] Furthermore, the sealing baffle at least completely covers the liquid discharge port.

[0010] Furthermore, the heating structure comprises a heating wire, and the heating wire is arranged on a side wall of the drying box.

[0011] Furthermore, a stirring assembly for stirring phosphogypsum is installed in the drying box, and the stirring assembly includes a rotatable shaft and stirring blades installed on the shaft.

[0012] Furthermore, it also includes an air delivery device for delivering hot air, the drying box has an air inlet and an air outlet, the air delivery device is connected to the air inlet, the rotating shaft is a hollow structure, the end of the rotating shaft is connected to the air inlet, and the side wall of the rotating shaft has a plurality of air outlet holes.

[0013] Furthermore, it also includes a cleaning rack arranged in the drying box, the cleaning rack includes a horizontal section and a vertical section, the two ends of the horizontal section are respectively connected to the rotating shaft and the vertical section, the vertical section is located outside the stirring blade, and a scraper is provided on the side of the vertical section close to the inner wall of the drying box, and the scraper is in contact with the inner wall of the drying box.

[0014] Furthermore, the stirring assembly also includes a second motor, a driving gear, a driven gear and a transmission gear, the rotating shaft of the second motor is connected to the driving gear, the rotating shaft is connected to the driven gear, and the transmission gear is respectively meshed with the driving gear and the driven gear.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the technical solution in conjunction with the following drawings, in which:

[0017] Figure 1 It is a cross-sectional view of the phosphogypsum rapid dehydration device of the technical solution of the utility model;

[0018] Figure 2 It is a structural schematic diagram of a phosphogypsum rapid dehydration device;

[0019] Figure 3 It is a structural schematic diagram of the bottom of the conveying cylinder;

[0020] Figure 4 It is a structural diagram of the box;

[0021] Figure 5 It is a schematic diagram of the structure of the drying box after removing the upper cover;

[0022] Figure 6 is a schematic diagram of the structure of the stirring assembly;

[0023] Figure 7 It is the structural schematic diagram of the drying box;

[0024] Figure 8 Schematic diagram of the internal structure of the drying box.

[0025] Figure numerals: conveying cylinder 100, feed port 110, discharge port 120, liquid discharge port 130, conveying channel 140, conveying screw 141, first motor 142, box body 200, first cavity 201, drain pipe 202, connecting port 210, sinking trough 220, sealing baffle 230, second cavity 240, drawer 250, drying box 300, discharge port 310, mounting frame 311, mounting ring 312, heating structure 320, heating wire 321, air inlet 330, air inlet elbow 331, air outlet 340, stirring assembly 400, rotating shaft 410, air outlet 411, stirring blade 420, second motor 430, driving gear 440, driven gear 450, transmission gear 460, cleaning frame 500, horizontal and vertical sections 510, vertical section 520, scraper 530. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is described in detail below, and examples of the technical solution are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The technical solution described below with reference to the accompanying drawings is exemplary and is only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figure 1 , 2 As shown, the phosphogypsum rapid dehydration device provided in the embodiment of the utility model includes a conveying cylinder 100, a box body 200 and a drying box 300. Figure 1 As shown, the conveying cylinder 100 has a feed port 110, a discharge port 120 and a liquid discharge port 130, a conveying channel 140 from the feed port 110 to the discharge port 120 is formed in the conveying cylinder 100, and the liquid discharge port 130 is connected to the conveying channel 140; the box body 200 has a first cavity 201 and a connecting port 210 connected to the first cavity 201, a filter screen (not shown in the figure) for filtering phosphogypsum is arranged at the connecting port 210, the connecting port 210 is connected to the liquid discharge port 130, and the first cavity 201 is used to receive the liquid in the conveying channel 140; the drying box 300 has a drying chamber (not shown in the figure) and a discharge port 310 for discharging, the discharge port 310 is connected to the drying chamber, a heating structure 320 for heating phosphogypsum is installed in the drying chamber 300, and the drying chamber is connected to the discharge port 120.

[0031] By providing a conveying cylinder 100 between the box body 200 and the drying box 300, a large amount of moisture in the phosphogypsum can enter the box body 200 through the discharge port 130 of the conveying cylinder 100 and the connecting port 210 of the box body 200 during the transportation of the phosphogypsum, that is, the moisture of the phosphogypsum can be filtered out before drying to reduce the moisture content of the phosphogypsum as much as possible, and then the drying box 300 heats, dries and dehydrates it, so that the overall dehydration efficiency is higher.

[0032] Specifically, Figure 1 As shown, the conveying cylinder 100 is placed horizontally, the feed port 110 and the drain port 130 are both located at the left end of the conveying cylinder 100, the feed port 110 is located at the top of the conveying cylinder 100, the drain port 130 is located at the bottom of the conveying cylinder 100, the discharge port 120 is located at the bottom of the right end of the conveying cylinder 100, the box body 200 and the drying box 300 are both located at the bottom of the conveying cylinder 100, so that the water in the conveying channel 140 can be automatically discharged by its own weight, making the device structure simple; when working, the water-containing and blocky phosphogypsum enters the conveying channel 140 from the feed port 110 and flows along the conveying channel 140. The conveying channel 140 moves to the right, and the water in the phosphogypsum gathers at the bottom of the phosphogypsum under the action of its own weight. When the phosphogypsum passes through the drain port 130, the filter screen blocks the phosphogypsum from entering the first cavity 201, so that the phosphogypsum can continue to move along the conveying channel 140, and the condensed water enters the first cavity 201 through the drain port 130, the filter screen and the connecting port 210, thereby achieving preliminary filtration of moisture. When the phosphogypsum enters the drying box 300, the heating structure 320 uniformly heats the phosphogypsum to dehydrate the phosphogypsum. After dehydration, the phosphogypsum is discharged from the discharge port 310.

[0033] Specifically, the conveying cylinder 100 can be tilted, with the feed port 110 and the discharge port 130 both located at the lower end of the conveying cylinder 100, and the discharge port 120 located at the higher end of the conveying cylinder 100, so that the water in the conveying channel 140 can be automatically discharged by its own weight, making the device structure simple.

[0034] Specifically, supporting feet are evenly arranged at the edge of the bottom of the drying box 300 to support the drying box 300 .

[0035] Specifically, a discharge port 310 is provided at the middle position of the bottom of the drying box 300 to facilitate discharge of materials.

[0036] Furthermore, if Figure 1 , 3 As shown, a feeding screw 141 is installed in the conveying channel 140, and the conveying cylinder 100 is installed with a first motor 142 for driving the feeding screw 141 to rotate. The phosphogypsum is conveyed by the feeding screw 141 to achieve uniform feeding; specifically, the first motor 142 is arranged on the outer side of the left end of the conveying cylinder 100, and the first motor 142 extends into the conveying cylinder 100 and is connected with the feeding screw 141.

[0037] Furthermore, the discharge port 120 is provided with a valve (not shown in the figure) for opening or closing the discharge port 120. The valve cooperates with the feeding screw 141 to squeeze out the water in the phosphogypsum as much as possible, and the dehydration effect is better. Figure 1 As shown, when the feeding screw 141 continuously feeds the phosphogypsum, the valve closes the discharge port 120, and the phosphogypsum is fed to the right end of the conveying cylinder 100 by the feeding screw 141 and gathered at the right end, thereby squeezing out as much water as possible from the phosphogypsum.

[0038] Furthermore, if Figure 4 As shown, the top of the box body 200 has a sinking groove 220, the sinking groove 220 is provided with a sealing baffle 230, the communication port 210 is provided on the sealing baffle 230, and the filter screen is provided on the sealing baffle 230, as shown in FIG. Figure 3 , 4 As shown, the shape of the sealing baffle 230 matches the shape of the conveying cylinder 100, so that the connection between the conveying cylinder 100 and the sealing baffle 230 is tighter and more stable, the gap is smaller, and the water overflow is reduced.

[0039] Furthermore, if Figure 3 , 4 As shown, the sealing baffle 230 at least completely covers the drain port 130 to prevent phosphogypsum from falling into the box body 200, and the design is more reasonable. Specifically, the position of the communication port 210 is far away from the edge of the sealing baffle 230.

[0040] Furthermore, if Figure 5As shown, the heating structure 320 includes a heating wire 321 , which is disposed on the side wall of the drying box 300 to uniformly heat the phosphogypsum; specifically, the heating wire 321 is disposed on the inner wall of the drying box 300 .

[0041] Furthermore, if Figure 5 , 6 As shown, a stirring assembly 400 for stirring phosphogypsum is installed in the drying box 300. The stirring assembly 400 includes a rotatable shaft 410 and stirring blades 420 installed on the shaft 410. The stirring blades 420 can fully stir the phosphogypsum, so that the phosphogypsum is heated evenly and the drying efficiency is improved. Specifically, there are multiple stirring blades 420, and the multiple stirring blades 420 are spaced apart along the circumferential direction of the shaft 410 and are arranged on the shaft 410.

[0042] Furthermore, it also includes an air delivery device (not shown in the figure) for delivering hot air, such as Figure 7 As shown, the drying box 300 has an air inlet 330 and an air outlet 340, and the external air delivery device is connected to the air inlet 330. The rotating shaft 410 is a hollow structure. Figure 6 , 7 As shown, the upper end of the rotating shaft 410 is connected to the air inlet 330, and the side wall of the rotating shaft 410 has a plurality of air outlet holes 411; the hot air is used to heat the phosphogypsum during the stirring process to improve the drying efficiency, and when the hot air cooperates with the heating wire 321 for heating, double heating is achieved, the heating efficiency is higher, and the heating can be made more uniform.

[0043] During operation, the air delivery device delivers hot air into the rotating shaft 410 through the air inlet 330, and then the hot air is discharged out of the rotating shaft 410 through the air outlet 411, and flows upward and is discharged through the air outlet 340, and the phosphogypsum is heated during the flow.

[0044] Specifically, Figure 8 As shown, the air inlet 330 is connected to an air inlet elbow 331, and the bottom of the air inlet elbow 331 is rotatably connected to the top of the rotating shaft 410 through a sealed bearing. By providing the air inlet elbow 331, the air inlet 330 and the air outlet 340 can both be located on one side of the feed port of the drying box 300.

[0045] Furthermore, if Figure 6As shown, it also includes a cleaning rack 500 arranged in the drying box 300, the cleaning rack 500 includes a horizontal section 510 and a vertical section 520, the two ends of the horizontal section 510 are respectively connected to the rotating shaft 410 and the vertical section 520, the vertical section 520 is located outside the stirring blade 420, and a scraper 530 is provided on the side of the vertical section 520 close to the inner wall of the drying box 300, and the scraper 530 is in contact with the inner wall of the drying box 300; the cleaning rack 500 is arranged to rotate synchronously with the rotating shaft 410, so that when the stirring blade 420 stirs, the scraper 530 on the cleaning rack 500 can clean the inner wall of the drying box 300, so as to prevent the phosphogypsum from adhering to the inner wall of the drying box 300 and extend the service life of the drying box 300; the scraper 530 can be made of rubber.

[0046] Furthermore, if Figure 6 As shown, the stirring assembly 400 also includes a second motor 430, a driving gear 440, a driven gear 450 and a transmission gear 460. The rotating shaft of the second motor 430 is connected to the driving gear 440, the bottom of the rotating shaft 410 is connected to the driven gear 450, and the transmission gear 460 is respectively meshed with the driving gear 440 and the driven gear 450; when the second motor 430 is working, the rotating shaft 410 can be driven to rotate through the driving gear 440, the transmission gear 460 and the driven gear 450, and then the stirring blade 420 stirs the phosphogypsum, so that the phosphogypsum is heated more evenly.

[0047] Specifically, a mounting collar 312 is fixed to the inside of the discharge port 310 through a mounting frame 311, and the mounting frame 311 is used to fix the mounting collar 312 in the discharge port 310, and the mounting collar 312 is rotatably connected to the rotating shaft 410, and the mounting collar 312 is used to enable the rotating shaft 410 to rotate, and the second motor 430, the driving gear 440, the driven gear 450 and the transmission gear 460 are all located below the bottom of the drying box 300, and the rotating shaft 410 extends out of the discharge port 310 and is connected to the driven gear 450. By installing the mounting collar 312 in the discharge port 310, the connection between the second motor 430 and the rotating shaft 410 is simpler; when working, the second motor 430 drives the rotating shaft 410 to rotate on the mounting collar 312, and then the stirring blade 420 stirs the phosphogypsum.

[0048] Specifically, Figure 1 , 4 As shown, the box body 200 has a drain pipe 202 communicated with the first cavity 201 , so that the filtered water can be discharged from the drain pipe 202 .

[0049] Specifically, a control panel is installed on the side wall of the drying box 300 to facilitate adjusting the heating temperature and stirring speed of the drying box 300 .

[0050] Specifically, Figure 1 , 2As shown, the box body 200 has a second cavity 240, and the second cavity 240 is located below the first cavity 201. The second cavity 240 can be plugged with a drawer 250, and the drawer 250 can be used to store some medicines to facilitate the processing of phosphogypsum.

[0051] Although the technical solutions of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the technical solutions without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A phosphogypsum rapid dehydration device, characterized in that: include: A conveying cylinder (100) having a feed port (110), a discharge port (120) and a liquid discharge port (130); a conveying channel (140) from the feed port (110) to the discharge port (120) is formed in the conveying cylinder (100); and the liquid discharge port (130) is communicated with the conveying channel (140); A box body (200) having a first cavity (201) and a communication port (210) communicating with the first cavity (201), wherein a filter screen for filtering phosphogypsum is provided at the communication port (210), the communication port (210) is communicated with the liquid discharge port (130), and the first cavity (201) is used to receive liquid in the delivery channel (140); The drying box (300) comprises a drying chamber and a discharge port (310) for discharging materials, wherein the discharge port (310) is communicated with the drying chamber, a heating structure (320) for heating phosphogypsum is installed in the drying box (300), and the drying chamber is communicated with the discharge port (120).

2. The phosphogypsum rapid dehydration device according to claim 1, characterized in that: A feeding screw (141) is installed in the conveying channel (140), and a first motor (142) for driving the feeding screw (141) to rotate is installed in the conveying cylinder (100).

3. The phosphogypsum rapid dehydration device according to claim 2, characterized in that: The discharge port (120) is equipped with a valve for opening or closing the discharge port (120).

4. The phosphogypsum rapid dehydration device according to claim 1, characterized in that: The top of the box body (200) is provided with a sinking groove (220), the sinking groove (220) is provided with a sealing baffle (230), the connecting port (210) is provided on the sealing baffle (230), the filter screen is provided on the sealing baffle (230), and the shape of the sealing baffle (230) matches the shape of the conveying cylinder (100).

5. The phosphogypsum rapid dehydration device according to claim 4, characterized in that: The sealing baffle (230) at least completely covers the liquid discharge port (130).

6. The phosphogypsum rapid dehydration device according to claim 1, characterized in that: The heating structure (320) comprises a heating wire (321), and the heating wire (321) is arranged on a side wall of the drying box (300).

7. The phosphogypsum rapid dehydration device according to claim 1 or 6, characterized in that: A stirring assembly (400) for stirring phosphogypsum is installed in the drying box (300), and the stirring assembly (400) comprises a rotatable shaft (410) and a stirring blade (420) installed on the shaft (410).

8. The phosphogypsum rapid dehydration device according to claim 7, characterized in that: It also includes an air delivery device for delivering hot air, the drying box (300) has an air inlet (330) and an air outlet (340), the air delivery device is connected to the air inlet (330), the rotating shaft (410) is a hollow structure, the end of the rotating shaft (410) is connected to the air inlet (330), and the side wall of the rotating shaft (410) has a plurality of air outlet holes (411).

9. The phosphogypsum rapid dehydration device according to claim 7, characterized in that: The invention also comprises a cleaning rack (500) arranged in the drying box (300), wherein the cleaning rack (500) comprises a horizontal section (510) and a vertical section (520), wherein two ends of the horizontal section (510) are respectively connected to the rotating shaft (410) and the vertical section (520), wherein the vertical section (520) is located outside the stirring blade (420), and a scraper (530) is provided on one side of the vertical section (520) close to the inner wall of the drying box (300), wherein the scraper (530) is in contact with the inner wall of the drying box (300).

10. The phosphogypsum rapid dehydration device according to claim 7, characterized in that: The stirring assembly (400) further comprises a second motor (430), a driving gear (440), a driven gear (450) and a transmission gear (460); the rotating shaft of the second motor (430) is connected to the driving gear (440), the rotating shaft (410) is connected to the driven gear (450), and the transmission gear (460) is respectively meshed with the driving gear (440) and the driven gear (450).

Images