Phosphate concentrate drying and screening device

Abstract

The utility model provides a phosphate concentrate drying and screening device. The phosphate concentrate drying and screening device comprises a gas material guide pipe, an inclination support, a material conveying rotary drum, a material collecting box, a screening net drum and an impact material crushing assembly. The material collecting box is arranged on one side of the inclination support, the material conveying rotary drum is rotationally arranged on the inclination support, and the discharging end of the material conveying rotary drum inclines towards the material collecting box; the gas material guide pipe is arranged at the feeding end of the material conveying rotary drum, and a discharging opening is formed in the peripheral wall of the discharging end of the material conveying rotary drum. The screening net cylinder is coaxially arranged in the material conveying rotary cylinder; the first end of the screening net cylinder is connected to the feeding end of the conveying rotary cylinder and communicates with the gas material guide pipe. The second end of the screening net cylinder is connected to the end of the discharging end of the conveying rotary cylinder. A material conveying cavity is formed between the screening net cylinder and the material conveying rotary cylinder, and a screening opening of the screening net cylinder communicates with the discharging opening through the material conveying cavity. The impact crushing assembly is arranged in the screening net cylinder and rotationally connected to the screening net cylinder, and can rotate along with the screening net cylinder and swing to crush phosphate concentrate particles in the screening net cylinder to reduce blocking of a screen opening.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrode material production, and in particular to a phosphate concentrate drying and screening device. Background Art

[0002] With the widespread use of new energy batteries, the market demand for electrode materials is also increasing. However, electrode materials usually require phosphate concentrate as raw material, and phosphate concentrate is purified from low-phosphorus and high-magnesium ores.

[0003] At present, phosphate concentrate is mostly obtained by flotation process of low-phosphorus and high-magnesium ore. The flotation process can efficiently remove impurity elements in low-phosphorus and high-magnesium ore to obtain concentrate slurry. The concentrate slurry is first treated by a thickener to enrich phosphorus, and then ground by a mill to finally obtain high-grade phosphate concentrate powder. However, the water content of the phosphate concentrate powder obtained by the above process is as high as 35%. The phosphate concentrate powder with too high water content is easy to agglomerate into phosphate concentrate slurry. The phosphate concentrate slurry is not only inconvenient to transport, but also not conducive to the subsequent production process. Therefore, some manufacturers have made further research and development.

[0004] For example, Chinese patent document CN216845457U discloses a drying device for geological mineral samples, including a base and a circulating hot air device, wherein a shell is installed on the top of the base, and a first joint is installed at one end of the shell, and a discharge hopper is installed at the end of the first joint; a roller is provided inside the shell, and one end of the roller is rotatably connected to the first joint, and the outer wall of the other end of the first joint is connected to one end of the shell; a connecting pipe is installed at one end of the circulating hot air device, and two connecting pipes are arranged in an alternating manner, and both connecting pipes are connected to the inside of the shell; one end of the roller passes through the shell and is connected to the second joint, and a meshing wheel is installed on the outer wall of the second joint; the meshing wheel is rotatably connected to the reduction motor.

[0005] However, the above-mentioned design of the drying device for geological ore samples has the following problems:

[0006] The above-mentioned drying device for geological ore samples can dry the phosphate concentrate slurry and disperse it into phosphate concentrate particles by the rolling of the drum, and screen the phosphate concentrate particles by the grid structure of the outer wall of the drum. However, since the particle size of the phosphate concentrate particles is difficult to control, the phosphate concentrate particles with larger particle sizes can easily clog the grid structure of the outer wall of the drum, thereby hindering the subsequent screening process. Utility Model Content

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a phosphate concentrate drying and screening device that is not prone to clogging and has high screening efficiency.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] A phosphate concentrate drying and screening device, comprising an air feed conduit, an inclined bracket, a feed drum and a receiving box; the receiving box is arranged on one side of the inclined bracket, the feed drum is rotatably arranged on the inclined bracket, and the unloading end of the feed drum is inclined toward the receiving box; the air feed conduit is arranged at the loading end of the feed drum, and a discharge port is provided on the peripheral wall of the unloading end of the feed drum, and the discharge port is opposite to the inlet of the receiving box;

[0010] The phosphate concentrate drying and screening device also includes a screening mesh cylinder and an impact crushing component;

[0011] The screening mesh cylinder is coaxially arranged in the feeding drum; the first end of the screening mesh cylinder is connected to the feeding end of the feeding drum and is connected to the gas material duct; the second end of the screening mesh cylinder is connected to the end of the feeding end of the feeding drum; a feeding cavity is formed between the screening mesh cylinder and the feeding drum, and the screen mouth of the screening mesh cylinder is connected to the discharge port through the feeding cavity; the impact crushing assembly is arranged in the screening mesh cylinder and is rotatably connected to the screening mesh cylinder.

[0012] In one embodiment, the screening mesh cylinder includes a plurality of supporting bars and a plurality of arc-shaped partitions; the plurality of supporting bars are spaced and placed horizontally in the feed drum; the first ends of the plurality of supporting bars are connected to the feeding end of the feed drum and are distributed around the outlet end of the gas conduit; the second ends of the plurality of supporting bars are connected to the end of the unloading end of the feed drum; a feeding window is formed between two adjacent supporting bars, and an arc-shaped partition is embedded in each feeding window, and the sieve mouth is the mesh of the arc-shaped partition.

[0013] In one embodiment, the impact crushing assembly includes a rocker arm and a counterweight impact head; the rocker arm is arranged perpendicular to the supporting bars, and the first end of the rocker arm is hinged to the supporting bars; the counterweight impact head is arranged at the second end of the rocker arm and is arranged toward the inner mesh surface of the arc-shaped partition net.

[0014] In one of the embodiments, a knocking and vibrating assembly is provided in the feed cavity; the knocking and vibrating assembly includes a rocker arm, a mounting plate and a counterweight knocking head, the mounting plate is fixed to the inner wall of the feed drum, and a swinging groove is provided on the mounting plate; the first end of the rocker arm is arranged in the swinging groove and is rotatably connected to the groove wall of the swinging groove; the counterweight knocking head is arranged at the second end of the rocker arm and is arranged toward the outer mesh surface of the arc-shaped partition mesh.

[0015] In one of the embodiments, the inner circumferential wall of the feed drum is provided with spiral guide ribs protruding into the feed cavity; the spiral guide ribs are arranged around the screening mesh cylinder and spirally extend from the feeding end of the feed drum to the discharge port.

[0016] In one of the embodiments, the inclination bracket includes a lifting plate group and a plurality of friction rollers; the lifting plate group is arranged on the circumferential bottom side of the feed drum; the plurality of friction rollers are rotatably arranged on the lifting plate group and are arranged at intervals along the length direction of the feed drum; the wheel surface of each friction roller is slidably abutted against the outer peripheral wall of the feed drum.

[0017] In one embodiment, the lifting plate group includes a high-position lifting plate, a middle partition and a low-position lifting plate arranged side by side in sequence; the high-position lifting plate is close to the feeding end of the feed drum; two symmetrically arranged rotating shafts are provided on the high-position lifting plate, and each of the rotating shafts is respectively connected to the middle partition; the low-position lifting plate is close to the unloading end of the feed drum, and two symmetrically arranged rotating drivers are provided on the middle partition, and the power output shaft of each of the rotating drivers is rotatably connected to the low-position lifting plate; each of the friction wheels is correspondingly sleeved on one of the rotating shafts and one of the power output shafts.

[0018] In one of the embodiments, the phosphate concentrate drying and screening device also includes a dust collecting assembly; the dust collecting assembly includes a fixed hoop and a breathable dust collecting bag, the fixed hoop is sleeved on the outer peripheral wall of the discharge end of the feed drum, and the fixed hoop is protrudingly provided with a circle of elastic pressure platform around the outer peripheral wall of the feed drum; the bag opening of the breathable dust collecting bag is covered on the outside of the fixed hoop, and the bag opening edge of the breathable dust collecting bag is sealed and buckled between the elastic pressure platform and the outer peripheral wall of the feed drum; the feed drum is provided with an exhaust hole, the exhaust hole is located on the inner side of the elastic pressure platform, and is connected to the breathable dust collecting bag; the discharge port is located on the outer side of the elastic pressure platform.

[0019] In one of the embodiments, the gas material duct includes a feed main pipe and an air intake branch pipe; the air intake branch pipe is arranged on the outer peripheral wall of the feed main pipe and is connected to the inner cavity of the air intake branch pipe; a feed port is opened at the feeding end of the conveying drum, and the outlet port of the feed main pipe is embedded in the feed port and is connected to the screening mesh cylinder.

[0020] In one of the embodiments, a vibrating screen is also provided at the entrance of the material receiving box.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] 1) An air duct is provided at the feeding end of the feed drum, and the first end of the screening mesh drum is connected to the feeding end of the feed drum, so that the air duct is connected to the first end of the screening mesh drum, and hot air and phosphate concentrate slurry can enter the screening mesh drum through the air duct. Because the feed drum is rotatably arranged on the inclined bracket, the unloading end of the feed drum is inclined toward the receiving box, and the screening mesh drum is coaxially arranged in the feed drum, and the second end of the screening mesh drum is connected to the end of the unloading end of the feed drum, so that the first end of the screening mesh drum is inclined downward toward the second end of the screening mesh drum and can rotate synchronously with the feed drum on the inclined bracket. At this time, the hot air and phosphate concentrate slurry will move from the first end of the screening mesh drum to the second end of the screening mesh drum under the action of gravity, and the hot air and phosphate concentrate slurry are fully in contact, so that the phosphate concentrate slurry can be dried into phosphate concentrate particles more quickly.

[0023] 2) Since the impact crushing assembly in the screening mesh cylinder is rotatably connected to the screening mesh cylinder, the impact crushing assembly can swing synchronously when rotating in the screening mesh cylinder to impact the phosphate concentrate particles in the screening mesh cylinder. The phosphate concentrate particles with larger particle sizes are impacted by the impact crushing assembly and become phosphate concentrate particles with smaller particle sizes. The phosphate concentrate particles with smaller particle sizes can better pass through the screening mesh cylinder while moving toward the second end of the screening mesh cylinder. Because the screen opening of the screening mesh cylinder is connected to the discharge port through the feed cavity, and the discharge port is opposite to the entrance of the collection box, the phosphate concentrate particles with smaller particle sizes can be collected in the collection box through the screen opening, feed cavity and discharge port of the screening mesh cylinder in sequence. Compared with the drying device for geological ore samples in the prior art, the impact crushing assembly of the phosphate concentrate drying and screening device disclosed in the present invention can swing and crush the phosphate concentrate particles in the screening mesh cylinder while rotating with the screening mesh cylinder, so that the phosphate concentrate particles with larger particle sizes are converted into phosphate concentrate particles with smaller particle sizes. The phosphate concentrate particles with smaller particle sizes are less likely to block the screen opening of the screening mesh cylinder and are more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a longitudinal cross-sectional view of a phosphate concentrate drying and screening device according to an embodiment of the present disclosure;

[0026] Figure 2 for Figure 1 A partial transverse cross-sectional view of the phosphate concentrate drying and screening device at the unloading end of the feeding drum;

[0027] Figure 3 for Figure 1The partial transverse cross-sectional structural diagram of the phosphate concentrate drying and screening device at the unloading end of the feeding drum is shown;

[0028] Figure 4 for Figure 1 The schematic diagram of the structure of the phosphate concentrate drying and screening device shown;

[0029] Figure 5 for Figure 1 A partial enlarged view shown in the middle.

[0030] Figure numerals: 10, phosphate concentrate drying and screening device; 100, gas material conduit; 110, feed main pipe; 1110, outlet port; 120, air intake branch pipe; 200, slope bracket; 210, lifting plate group; 2110, high-position lifting plate; 2111, rotating shaft; 2120, middle partition; 2121, rotating driver; 212a, power output shaft; 2130, low-position lifting plate; 220, friction support wheel; 300, feeding drum; 30a, feeding end; 30b, feeding end; 310, discharge port; 301, feeding cavity; 320, spiral guide rib; 340, exhaust hole ; 350, feed inlet; 400, material receiving box; 410, entrance; 4110, vibrating screen; 500, screening net cylinder; 501, screen mouth; 510, supporting grid; 51a, material passing window; 520, arc-shaped partition; 5210, block discharge port; 600, impact crushing assembly; 610, rocker; 620, counterweight impact head; 700, knocking vibration assembly; 710, rocker arm; 720, mounting plate; 721, swing trough; 730, counterweight impact head; 800, dust collection assembly; 810, fixed hoop; 8110, elastic pressure platform; 820, breathable dust collection bag; 8210, bag mouth. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0035] like Figure 1 As shown, a phosphate concentrate drying and screening device 10 includes an air feed conduit 100, an inclined bracket 200, a feed drum 300, a receiving box 400, a screening mesh drum 500 and an impact crushing assembly 600; the receiving box 400 is arranged on one side of the inclined bracket 200, the feed drum 300 is rotatably arranged on the inclined bracket 200, and the feed drum 300 has a lower end 30b inclined toward the receiving box 400; the air feed conduit 100 is arranged at the upper end 30a of the feed drum 300, and a discharge port 310 is opened on the peripheral wall of the lower end 30b of the feed drum 300, and the discharge port 310 is connected to the receiving box 400. 00 is opposite to the inlet 410 of the feed drum 300; the screening mesh drum 500 is coaxially arranged in the feed drum 300; the first end of the screening mesh drum 500 is connected to the feed end 30a of the feed drum 300, and is connected to the gas duct 100; the second end of the screening mesh drum 500 is connected to the end of the feed end 30b of the feed drum 300; a feed cavity 301 is formed between the screening mesh drum 500 and the feed drum 300, and the screen mouth 501 of the screening mesh drum 500 is connected to the discharge port 310 through the feed cavity 301; the impact crushing assembly 600 is arranged in the screening mesh drum 500, and is rotatably connected to the screening mesh drum 500.

[0036] It can be understood that by arranging the gas conduit 100 at the feeding end 30a of the feeding drum 300, and connecting the first end of the screening mesh drum 500 to the feeding end 30a of the feeding drum 300, the gas conduit 100 is connected to the first end of the screening mesh drum 500, and the hot air and the phosphate concentrate slurry can enter the screening mesh drum 500 through the gas conduit 100. In addition, because the feeding drum 300 is rotatably arranged on the inclined bracket 200, the unloading end 30b of the feeding drum 300 is inclined toward the receiving box 400, and the screening mesh drum 500 is also inclined. The shaft is arranged in the feed drum 300, and the second end of the screening mesh drum 500 is connected to the end of the discharge end 30b of the feed drum 300, so that the first end of the screening mesh drum 500 is tilted downward toward the second end of the screening mesh drum 500 and can rotate synchronously with the feed drum 300 on the slope bracket 200. At this time, the hot air and the phosphate concentrate slurry will move from the first end of the screening mesh drum 500 to the second end of the screening mesh drum 500 under the action of gravity, and the hot air and the phosphate concentrate slurry are in full contact, so that the phosphate concentrate slurry can be dried into phosphate concentrate particles more quickly.

[0037] It can be understood that since the impact crushing assembly 600 in the screening mesh cylinder 500 is rotatably connected to the screening mesh cylinder 500, the impact crushing assembly 600 can swing synchronously when rotating in the screening mesh cylinder 500 to impact the phosphate concentrate particles in the screening mesh cylinder 500. The phosphate concentrate particles with larger particle sizes are transformed into phosphate concentrate particles with smaller particle sizes after being impacted by the impact crushing assembly 600. The phosphate concentrate particles with smaller particle sizes can better pass through the screening mesh cylinder 500 while moving toward the second end of the screening mesh cylinder 500, because the sieve mouth 501 of the screening mesh cylinder 500 is connected to the discharge port 310 through the feed cavity 301, and the discharge port 310 is opposite to the inlet 410 of the material receiving box 400. The phosphate concentrate particles with smaller particle sizes can be collected in the material receiving box 400 through the sieve mouth 501 of the screening mesh cylinder 500, the feed cavity 301 and the discharge port 310 in turn. Compared with the drying device for geological ore samples in the prior art, the impact crushing assembly 600 of the phosphate concentrate drying and screening device 10 of the present embodiment can swing and crush the phosphate concentrate particles in the screening mesh cylinder 500 while rotating with the screening mesh cylinder 500, so that the phosphate concentrate particles with larger particle sizes are converted into phosphate concentrate particles with smaller particle sizes. The phosphate concentrate particles with smaller particle sizes are less likely to clog the screen opening 501 of the screening mesh cylinder 500, and are more convenient to use.

[0038] Combination Figure 1As shown, in one of the embodiments, the loading end 30a of the feed drum 300 is the first end of the feed drum 300, and the unloading end 30b of the feed drum 300 is the second end of the feed drum 300. Because the unloading end 30b of the feed drum 300 is inclined toward the receiving box 400, the feed drum 300 is inclined from the first end of the feed drum 300 to the second end of the feed drum 300, and a discharge port 310 is provided on the peripheral wall of the unloading end 30b of the feed drum 300. The screen port 501 of the screening mesh drum 500 is connected to the discharge port 310 through the feed cavity 301, so that the phosphate concentrate particles entering the feed cavity 301 through the discharge port 310 will move from the first end of the feed drum 300 to the second end of the feed drum 300 under the action of gravity, and can finally be discharged from the discharge port 310 for centralized collection and treatment.

[0039] In one embodiment, the size of the sieve opening 501 of the sieve cylinder 500 is in the range of 16 mm. 2 Up to 36mm 2 It can be understood that by setting the range of the sieve opening 501 of the sieve cylinder 500 to 16 mm 2 Up to 36mm 2 The range of can ensure that the particle size of the phosphate concentrate particles with a smaller particle size passing through the sieve opening 501 of the screening mesh cylinder 500 is kept within the range of 4 mm to 6 mm. Specifically, the phosphate concentrate particles with a particle size of 4 mm, 5 mm or 6 mm can better meet the production needs. Of course, the size of the sieve opening 501 of the screening mesh cylinder 500 is not limited, and those skilled in the art can also make other choices according to production needs.

[0040] Combination Figure 1 and Figure 2As shown, in this embodiment, the screening mesh cylinder 500 includes a plurality of supporting bars 510 and a plurality of arc-shaped partition nets 520; the plurality of supporting bars 510 are arranged horizontally at intervals in the feed drum 300; the first ends of the plurality of supporting bars 510 are connected to the feed end 30a of the feed drum 300, and are distributed around the outlet end of the gas conduit 100; the second ends of the plurality of supporting bars 510 are connected to the end of the discharge end 30b of the feed drum 300; a feed window 51a is formed between two adjacent supporting bars 510, and an arc-shaped partition net 520 is embedded in each feed window 51a, and the sieve mouth 501 is the mesh of the arc-shaped partition net 520. It can be understood that by connecting the two ends of the plurality of supporting bars 510 to the ends of the feeding end 30a and the feeding end 30b of the feeding drum 300, respectively, because the first ends of the plurality of supporting bars 510 are distributed around the outlet end of the gas conduit 100, when an arc-shaped partition 520 is embedded in each feeding window 51a, the screening net cylinder 500 can be formed by each arc-shaped partition 520 and each supporting bar 510, and the gas The outlet end of the material conduit 100 is connected to the screening mesh cylinder 500, that is, hot air and phosphate concentrate slurry can enter the inner mesh surface of the arc-shaped partition 520 of the screening mesh cylinder 500 through the air-material conduit 100 for screening. At the same time, each supporting grid bar 510 supports the corresponding arc-shaped partition 520, which can enhance the structural strength of the arc-shaped partition 520, thereby increasing the load-bearing capacity of the arc-shaped partition 520, and finally improving the single screening amount of the screening mesh cylinder 500 of this embodiment.

[0041] Combination Figure 1 and Figure 3 As shown, in one embodiment, the peripheral wall of the second end of the screening mesh cylinder 500 is further provided with a block discharge port 5210, and the block discharge port 5210 is arranged opposite to the discharge port 310. It can be understood that by providing the block discharge port 5210 on the peripheral wall of the second end of the screening mesh cylinder 500, since the agglomerated or larger particle size part of the phosphate concentrate particles cannot pass through the screen port 501 of the screening mesh cylinder 500, and the second end of the screening mesh cylinder 500 is connected to the end of the feed end 30b of the feed drum 300, the first end of the screening mesh cylinder 500 is inclined downward toward the second end of the screening mesh cylinder 500, so that the agglomerated or larger particle size part of the phosphate concentrate particles can roll to the block discharge port 5210 of the screening mesh cylinder 500 under the action of gravity and the rotation of the screening mesh cylinder 500, and the block discharge port 5210 is arranged opposite to the discharge port 310, and finally the agglomerated or larger particle size part of the phosphate concentrate particles can be discharged from the discharge port 310.

[0042] Combination Figure 2As shown, further, the impact crushing assembly 600 includes a swing rod 610 and a counterweight impact head 620; the swing rod 610 is arranged perpendicular to the supporting grid bar 510, and the first end of the swing rod 610 is hinged to the supporting grid bar 510; the counterweight impact head 620 is arranged at the second end of the swing rod 610 and is arranged toward the inner mesh surface of the arc-shaped partition net 520. It can be understood that by setting the swing rod 610 perpendicular to the supporting grid bar 510 and hingedly connecting the first end of the swing rod 610 to the supporting grid bar 510, the swing rod 610 can swing around the supporting grid bar 510 toward the arc-shaped partition net 520. By setting the counterweight head 620 at the second end of the swing rod 610, because the counterweight head 620 faces the inner mesh surface of the arc-shaped partition net 520, when the feeding drum 300 and the screening net cylinder 500 rotate synchronously, the counterweight head 620 drives the swing rod 610 to violently hit the inner mesh surface of the arc-shaped partition net 520 back and forth due to the change in the direction of gravity, thereby being able to more quickly crush the phosphate concentrate particles on the inner mesh surface of the arc-shaped partition net 520, thereby improving the screening efficiency of the screening net cylinder 500. At the same time, after being violently hit by the counterweight head 620, the phosphate concentrate particles have a finer particle size and are less likely to block the screen opening 501 of the screening net cylinder 500.

[0043] Combination Figure 2 and Figure 3 As shown, in one embodiment, a knocking and vibrating material assembly 700 is provided in the feeding cavity 301; the knocking and vibrating material assembly 700 includes a rocking arm 710, a mounting plate 720 and a counterweight knocking head 730; the mounting plate 720 is fixed to the inner wall of the feeding drum 300, and a swinging groove 721 is provided on the mounting plate 720; the first end of the rocking arm 710 is disposed in the swinging groove 721 and is rotatably connected to the groove wall of the swinging groove 721; the counterweight knocking head 730 is disposed at the second end of the rocking arm 710 and is disposed toward the outer mesh surface of the arc-shaped partition net 520. It can be understood that by rotatably connecting the first end of the rocking arm 710 to the groove wall of the swinging groove 721 and arranging the counterweight knocking head 730 at the second end of the rocking arm 710, because the mounting plate 720 is fixed to the inner wall of the feeding drum 300, the counterweight knocking head 730 is oriented toward the outer mesh surface of the arc-shaped partition net 520. When the feed drum 300 rotates, the counterweight knocking head 730 can drive the rocker arm 710 to swing relative to the inner wall of the feed drum 300 due to the change in the direction of gravity, and violently strike the outer mesh surface of the arc-shaped partition 520, so that the phosphate concentrate particles accidentally stuck in the mesh holes of the arc-shaped partition 520 can be broken or shaken back into the screening drum 500, further reducing the occurrence of blockage of the screen mouth 501 of the screening drum 500.

[0044] Combination Figure 1 and Figure 3As shown, in one embodiment, the inner wall of the feeding drum 300 is provided with a spiral guide rib 320 protruding into the feeding cavity 301 ; the spiral guide rib 320 is arranged around the screening mesh cylinder 500 and spirally extends from the feeding end 30a of the feeding drum 300 to the discharge port 310 . It can be understood that by arranging the spiral guide rib 320 around the screening mesh drum 500, because the spiral guide rib 320 spirally extends from the feeding end 30a of the feed drum 300 to the discharge port 310, the first end of the screening mesh drum 500 is connected to the feeding end 30a of the feed drum 300, so that the phosphate concentrate particles with smaller particle size can fall from the sieve mouth 501 at the first end of the screening mesh drum 500 to the feeding end 30a of the feed drum 300, and with the rotation of the feed drum 300 and the action of gravity, they are slowly and orderly transferred toward the discharge port 310 along the spiral guide rib 320, thereby avoiding a large number of phosphate concentrate particles from simultaneously pouring into the discharge port 310 and causing blockage.

[0045] Combination Figure 1 and Figure 4 As shown, in one embodiment, the inclination bracket 200 includes a lifting plate group 210 and a plurality of friction rollers 220; the lifting plate group 210 is arranged on the circumferential bottom side of the feed drum 300; the plurality of friction rollers 220 are rotatably arranged on the lifting plate group 210, and are arranged at intervals along the length direction of the feed drum 300; the wheel surface of each friction roller 220 is slidably abutted against the outer peripheral wall of the feed drum 300. It can be understood that because the multiple friction rollers 220 are rotatably arranged on the lifting plate group 210 and are arranged at intervals along the length direction of the feed drum 300, the wheel surfaces of the multiple friction rollers 220 can respectively abut against the outer peripheral wall of the feed drum 300, so that the feed drum 300 is supported by the friction force between the wheel surface of each friction roller 220 and the outer peripheral wall of the feed drum 300. When the friction roller 220 is pushed to rotate, the friction roller 220 can drive the feed drum 300 to rotate smoothly on the inclination bracket 200 through friction.

[0046] Combination Figure 4As shown, in this embodiment, the lifting plate group 210 includes a high-position lifting plate 2110, a middle partition 2120 and a low-position lifting plate 2130 which are arranged side by side in sequence; the high-position lifting plate 2110 is close to the feeding end 30a of the feeding drum 300; two symmetrically arranged rotating shafts 2111 are provided on the high-position lifting plate 2110, and each rotating shaft 2111 is respectively connected to the middle partition 2120; the low-position lifting plate 2130 is close to the unloading end 30b of the feeding drum 300, and two symmetrically arranged rotating drivers 2121 are provided on the middle partition 2120, and the power output shaft 212a of each rotating driver 2121 is rotatably connected to the low-position lifting plate 2130; each friction support wheel 220 is correspondingly sleeved on a rotating shaft 2111 and a power output shaft 212a. It can be understood that by arranging a high-position lifting plate 2110 near the feeding end 30a of the feeding drum 300, and making the high-position lifting plate 2110 rotatably connected to the middle partition plate 2120 through two symmetrically arranged rotating shafts 2111, when each friction roller 220 is respectively sleeved on the corresponding rotating shaft 2111, it is possible to abut against the two sides of the feeding end 30a of the feeding drum 300 through each friction roller 220, and at the same time, by arranging a low-position lifting plate 2130 near the unloading end 30b of the feeding drum 300, and making the middle partition plate 2120 The power output shafts 212a of the two symmetrical rotation drivers 2121 on the partition plate 2120 are respectively rotationally connected to the low-position lifting plate 2130. When the friction wheels 220 are respectively sleeved on the corresponding power output shafts 212a, the friction wheels 220 can abut against the two sides of the discharge end 30b of the feed drum 300 to lift the feed drum 300 more smoothly. Finally, the feed drum 300 can automatically rotate with the rotation of the power output shaft 212a of the rotation driver 2121.

[0047] Combination Figure 1 and Figure 5As shown, in one of the embodiments, the phosphate concentrate drying and screening device 10 also includes a dust collecting component 800; the dust collecting component 800 includes a fixed hoop 810 and a breathable dust collecting bag 820, the fixed hoop 810 is sleeved on the outer peripheral wall of the discharge end 30b of the feed drum 300, and the fixed hoop 810 is convexly provided with a circle of elastic pressure platform 8110 around the outer peripheral wall of the feed drum 300; the bag opening 8210 of the breathable dust collecting bag 820 is covered on the outside of the fixed hoop 810, and the edge of the bag opening 8210 of the breathable dust collecting bag 820 is sealed and buckled between the elastic pressure platform 8110 and the outer peripheral wall of the feed drum 300; the feed drum 300 is provided with an exhaust hole 340, the exhaust hole 340 is located on the inner side of the elastic pressure platform 8110, and is connected to the breathable dust collecting bag 820; the discharge port 310 is located on the outer side of the elastic pressure platform 8110. It can be understood that by covering the bag opening 8210 of the breathable dust bag 820 on the outside of the fixed hoop 810 and sealing and pressing the edge of the bag opening 8210 of the breathable dust bag 820 between the elastic pressure platform 8110 and the outer peripheral wall of the feed drum 300, the breathable dust bag 820 can be tightly sleeved on the outer peripheral wall of the discharge end 30b of the feed drum 300, and by providing an exhaust hole 340 at a position of the feed drum 300 located on the inner side of the elastic pressure platform 8110, the exhaust hole 340 can be connected to the breathable dust bag 820, and then the hot air in the feed drum 300 can enter the breathable dust bag 820 through the exhaust hole 340, and the hot air is discharged through the breathable dust bag 820, and the phosphate concentrate dust carried in the hot air will be collected in the breathable dust bag 820, thereby reducing the pollution of the phosphate concentrate dust to the environment.

[0048] Combination Figure 1 and Figure 4 As shown, in one embodiment, the gas conduit 100 includes a feed main pipe 110 and an intake branch pipe 120; the intake branch pipe 120 is arranged on the outer peripheral wall of the feed main pipe 110 and is connected to the inner cavity of the intake branch pipe 120; the feeding end 30a of the conveying drum 300 is provided with a feed port 350, and the outlet port 1110 of the feed main pipe 110 is embedded in the feed port 350 and is connected to the screening mesh cylinder 500. It can be understood that by arranging the air intake branch pipe 120 on the outer peripheral wall of the feed main pipe 110 and connecting the air intake branch pipe 120 to the inner cavity of the air intake branch pipe 120, hot air can enter from the air intake branch pipe 120 alone, and phosphate concentrate slurry can enter from the feed main pipe 110 alone, and the hot air can be fully mixed with the phosphate concentrate slurry at the connecting position between the air intake branch pipe 120 and the feed main pipe 110, which can not only enhance the drying effect of the phosphate concentrate slurry, but also drive the phosphate concentrate slurry to accelerate into the screening mesh cylinder 500 during the flow process.

[0049] Combination Figure 1 and Figure 3As shown, in one embodiment, a vibrating screen 4110 is further provided at the inlet 410 of the receiving box 400. It can be understood that by providing the vibrating screen 4110 at the inlet 410 of the receiving box 400, and the discharge port 310 is opposite to the inlet 410 of the receiving box 400, the vibrating screen 4110 can further screen the phosphate concentrate particles discharged from the discharge port 310 through vibration, so that the particle size consistency of the phosphate concentrate particles is better, and finally better meet the production needs.

[0050] In one embodiment, for better understanding, the use process of the phosphate concentrate drying and screening device 10 of the above embodiment is described as follows:

[0051] First, phosphate concentrate slurry is introduced into the feed main pipe 110, and hot air is introduced into the air intake branch pipe 120. The hot air is mixed with the phosphate concentrate slurry and enters the screening mesh drum 500. The phosphate concentrate slurry is dried by the hot air to form phosphate concentrate particles. The rotary driver 2121 drives the friction support wheel 220 to rotate. The wheel friction of the friction support wheel 220 drives the feed drum 300 to rotate. The screening mesh drum 500 rotates synchronously with the feed drum 300 and disperses the phosphate concentrate particles. At the same time, the phosphate concentrate particles are impacted by the impact crushing assembly 600 and become phosphate concentrate particles with smaller particle sizes. The phosphate concentrate particles with smaller particle sizes are collected in the receiving box 400 through the sieve port 501, the feed cavity 301 and the discharge port 310 in turn.

[0052] Compared with the prior art, the present invention has at least the following advantages:

[0053] 1) By setting an air conduit 100 at the feeding end 30a of the feeding drum 300, and connecting the first end of the screening mesh drum 500 to the feeding end 30a of the feeding drum 300, the air conduit 100 is connected to the first end of the screening mesh drum 500, and hot air and phosphate concentrate slurry can enter the screening mesh drum 500 through the air conduit 100. In addition, because the feeding drum 300 is rotatably arranged on the inclined bracket 200, the unloading end 30b of the feeding drum 300 is inclined toward the receiving box 400, and the screening mesh drum 500 is coaxial with the feeding drum 300. The second end of the screening mesh cylinder 500 is arranged in the feeding drum 300, and is connected to the end of the discharge end 30b of the feeding drum 300, so that the first end of the screening mesh cylinder 500 is tilted downward toward the second end of the screening mesh cylinder 500 and can rotate synchronously with the feeding drum 300 on the slope bracket 200. At this time, the hot air and the phosphate concentrate slurry will move from the first end of the screening mesh cylinder 500 to the second end of the screening mesh cylinder 500 under the action of gravity, and the hot air and the phosphate concentrate slurry are in full contact, so that the phosphate concentrate slurry can be dried into phosphate concentrate particles more quickly.

[0054] 2) Since the impact crushing assembly 600 in the screening mesh cylinder 500 is rotatably connected to the screening mesh cylinder 500, the impact crushing assembly 600 can swing synchronously when rotating in the screening mesh cylinder 500 to impact the phosphate concentrate particles in the screening mesh cylinder 500. The phosphate concentrate particles with larger particle sizes are transformed into phosphate concentrate particles with smaller particle sizes after being impacted by the impact crushing assembly 600. The phosphate concentrate particles with smaller particle sizes can better pass through the screening mesh cylinder 500 while moving toward the second end of the screening mesh cylinder 500, because the sieve mouth 501 of the screening mesh cylinder 500 is connected to the discharge port 310 through the feed cavity 301, and the discharge port 310 is opposite to the inlet 410 of the material receiving box 400. The phosphate concentrate particles with smaller particle sizes can pass through the sieve mouth 501 of the screening mesh cylinder 500, the feed cavity 301 and the discharge port 310 in sequence and be collected in the material receiving box 400. Compared with the drying device for geological mineral samples in the prior art, the impact crushing assembly 600 of the phosphate concentrate drying and screening device 10 disclosed in the present invention can swing and crush the phosphate concentrate particles in the screening mesh cylinder 500 while rotating with the screening mesh cylinder 500, so that the phosphate concentrate particles with larger particle sizes are converted into phosphate concentrate particles with smaller particle sizes. The phosphate concentrate particles with smaller particle sizes are less likely to clog the screen opening 501 of the screening mesh cylinder 500, and are more convenient to use.

[0055] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A phosphate concentrate drying and screening device (10), comprising an air feed conduit (100), an inclined bracket (200), a feed drum (300) and a receiving box (400); the receiving box (400) is arranged on one side of the inclined bracket (200), the feed drum (300) is rotatably arranged on the inclined bracket (200), and the unloading end (30b) of the feed drum (300) is inclined toward the receiving box (400); the air feed conduit (100) is arranged at the loading end (30a) of the feed drum (300), and a discharge port (310) is provided on the peripheral wall of the unloading end (30b) of the feed drum (300), and the discharge port (310) is opposite to the inlet (410) of the receiving box (400); It is characterized in that The phosphate concentrate drying and screening device (10) further comprises a screening mesh cylinder (500) and an impact crushing component (600); The screening mesh cylinder (500) is coaxially arranged in the feeding drum (300); the first end of the screening mesh cylinder (500) is connected to the feeding end (30a) of the feeding drum (300) and is connected to the gas conduit (100); the second end of the screening mesh cylinder (500) is connected to the end of the feeding end (30b) of the feeding drum (300); a feeding cavity (301) is formed between the screening mesh cylinder (500) and the feeding drum (300), and the screen mouth (501) of the screening mesh cylinder (500) is connected to the discharge port (310) through the feeding cavity (301); the impact crushing assembly (600) is arranged in the screening mesh cylinder (500) and is rotatably connected to the screening mesh cylinder (500).

2. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: The screening mesh cylinder (500) comprises a plurality of supporting bars (510) and a plurality of arc-shaped partitions (520); the plurality of supporting bars (510) are arranged horizontally and at intervals in the feeding drum (300); the first ends of the plurality of supporting bars (510) are connected to the feeding end (30a) of the feeding drum (300) and are distributed around the outlet end of the gas conduit (100); the second ends of the plurality of supporting bars (510) are connected to the end of the discharging end (30b) of the feeding drum (300); a material transfer window (51a) is formed between two adjacent supporting bars (510), and each of the material transfer windows (51a) is embedded with an arc-shaped partition (520), and the sieve opening (501) is a mesh of the arc-shaped partition (520).

3. The phosphate concentrate drying and screening device (10) according to claim 2, characterized in that: The impact crushing assembly (600) comprises a swing rod (610) and a counterweight impact head (620); the swing rod (610) is arranged perpendicular to the supporting grid bar (510), and the first end of the swing rod (610) is hinged to the supporting grid bar (510); the counterweight impact head (620) is arranged at the second end of the swing rod (610) and is arranged toward the inner mesh surface of the arc-shaped partition net (520).

4. The phosphate concentrate drying and screening device (10) according to claim 2, characterized in that: A knocking and vibrating material assembly (700) is provided in the feeding cavity (301); the knocking and vibrating material assembly (700) comprises a rocking arm (710), a mounting plate (720) and a counterweight knocking head (730); the mounting plate (720) is fixed to the inner wall of the feeding drum (300), and a rocking groove (721) is provided on the mounting plate (720); the first end of the rocking arm (710) is arranged in the rocking groove (721) and is rotatably connected to the groove wall of the rocking groove (721); the counterweight knocking head (730) is arranged at the second end of the rocking arm (710) and is arranged toward the outer mesh surface of the arc-shaped partition net (520).

5. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: The inner circumferential wall of the feeding drum (300) is provided with a spiral guide rib (320) protruding into the feeding cavity (301); the spiral guide rib (320) is arranged around the screening mesh cylinder (500) and spirally extends from the feeding end (30a) of the feeding drum (300) to the discharge port (310).

6. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: The inclination bracket (200) comprises a lifting plate group (210) and a plurality of friction rollers (220); the lifting plate group (210) is arranged on the bottom side of the circumference of the feed drum (300); the plurality of friction rollers (220) are rotatably arranged on the lifting plate group (210) and are arranged at intervals along the length direction of the feed drum (300); the wheel surface of each friction roller (220) is slidably abutted against the outer peripheral wall of the feed drum (300).

7. The phosphate concentrate drying and screening device (10) according to claim 6, characterized in that: The lifting plate group (210) comprises a high-position lifting plate (2110), a middle partition plate (2120) and a low-position lifting plate (2130) which are arranged in parallel in sequence; the high-position lifting plate (2110) is close to the feeding end (30a) of the feeding drum (300); the high-position lifting plate (2110) is provided with two symmetrically arranged rotating shafts (2111), and each rotating shaft (2111) is respectively connected to the middle partition plate (2120); the low-position lifting plate (2130) is provided with a plurality of rotating shafts (2111) arranged in a symmetrical manner, and each rotating shaft (2111) is respectively connected to the middle partition plate (2120); The lifting plate (2130) is close to the unloading end (30b) of the feeding drum (300), and two symmetrically arranged rotating drivers (2121) are provided on the middle partition plate (2120), and the power output shaft (212a) of each rotating driver (2121) is rotatably connected to the low-position lifting plate (2130); each of the friction supporting wheels (220) is correspondingly sleeved on a rotating shaft (2111) and a power output shaft (212a).

8. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: The phosphate concentrate drying and screening device (10) further comprises a dust collecting assembly (800); the dust collecting assembly (800) comprises a fixed hoop (810) and a breathable dust collecting bag (820); the fixed hoop (810) is sleeved on the outer peripheral wall of the discharge end (30b) of the feeding drum (300); the fixed hoop (810) is protruded around the outer peripheral wall of the feeding drum (300) to form a circle of elastic pressure platform (8110); the bag opening (8210) of the breathable dust collecting bag (820) covers the outer peripheral wall of the feeding drum (300); On the outside of the fixed hoop (810), the edge of the bag opening (8210) of the breathable dust bag (820) is sealed and buckled between the elastic pressure platform (8110) and the outer peripheral wall of the feeding drum (300); the feeding drum (300) is provided with an exhaust hole (340), and the exhaust hole (340) is located on the inner side of the elastic pressure platform (8110) and is connected to the breathable dust bag (820); the discharge port (310) is located on the outside of the elastic pressure platform (8110).

9. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: The gas material conduit (100) comprises a main feed pipe (110) and an intake branch pipe (120); the intake branch pipe (120) is arranged on the outer peripheral wall of the main feed pipe (110) and is connected to the inner cavity of the intake branch pipe (120); a feed port (350) is provided at the feeding end (30a) of the conveying drum (300), and the outlet port (1110) of the main feed pipe (110) is embedded in the feed port (350) and is connected to the screening mesh drum (500).

10. The phosphate concentrate drying and screening device (10) according to claim 1, characterized in that: A vibrating screen (4110) is also provided at the entrance (410) of the material receiving box (400).

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