CN117960333A - Powder grinding and selecting device and method for powdery fluorogypsum - Google Patents
Powder grinding and selecting device and method for powdery fluorogypsum Download PDFInfo
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- CN117960333A CN117960333A CN202410220969.3A CN202410220969A CN117960333A CN 117960333 A CN117960333 A CN 117960333A CN 202410220969 A CN202410220969 A CN 202410220969A CN 117960333 A CN117960333 A CN 117960333A
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- fluorogypsum
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- 239000000843 powder Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000227 grinding Methods 0.000 title abstract description 6
- 238000012216 screening Methods 0.000 claims abstract description 176
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 36
- 239000010440 gypsum Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 28
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 26
- 239000011737 fluorine Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 29
- 238000010298 pulverizing process Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010130 dispersion processing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
The invention relates to the technical field of gypsum processing, and particularly discloses a powder grinding and selecting device and method for powdery fluorogypsum. The device comprises a frame, a feed hopper and a circulating fan, wherein the feed hopper and the circulating fan are arranged on the frame, a first-stage crushing and screening device, a second-stage crushing and screening device and a centrifugal vortex collector are sequentially arranged on the frame along the airflow circulating direction of the circulating fan, the powder fluorine gypsum enters the first-stage crushing and screening device through the feed hopper to be crushed once, the circulating airflow promotes collision between the powder fluorine gypsum, the circulating airflow brings the rough fluorine gypsum powder into the second-stage crushing and screening device to be crushed again to obtain target fluorine gypsum powder, the centrifugal vortex collector is used for collecting the target fluorine gypsum powder, the rough fluorine gypsum powder with the particle size larger than the target powder fluorine gypsum is crushed for three times in the screening barrel through the second-stage crushing and screening device, and the crushing and powder selecting process of the fluorine gypsum is integrally designed, so that the crushing and powder selecting efficiency of the fluorine gypsum is improved.
Description
Technical Field
The invention relates to the technical field of gypsum processing, in particular to a powder grinding and selecting device and method for powdery fluorogypsum.
Background
Gypsum is a widely used industrial material, and in the processing of gypsum, grinding and milling are indispensable processing steps.
The traditional process is that gypsum is crushed by a crusher and then sieved, the sieved gypsum is crushed by a roller mill, the gypsum with overlarge grain size is added into the crusher again for secondary crushing, the viscosity of the fluorogypsum is large, the crushed gypsum is easy to adhere, secondary dispersion processing is needed, a large amount of labor force is wasted, and the crushing and powder selecting efficiency of the fluorogypsum is affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a powder crushing and selecting device and method for powdery fluorogypsum so as to improve the crushing and selecting efficiency of the fluorogypsum.
The technical scheme adopted by the invention is as follows:
The utility model provides a powder device is selected in crushing of powder fluorine gypsum, includes the frame and sets up the feeder hopper in the frame, its characterized in that still includes circulating fan, the frame is last to have set gradually one-level crushing screening plant, two-level crushing screening plant and centrifugal vortex collector along circulating fan's air current circulation direction, centrifugal vortex collector's air outlet is connected with circulating fan's air intake, circulating fan's circulating air current circulates in one-level crushing screening plant, two-level crushing screening plant and centrifugal vortex collector, sealing connection is between circulating fan, one-level crushing screening plant, two-level crushing screening plant and the centrifugal vortex collector, forms airtight circulation system;
The first-stage crushing and screening device is used for crushing and screening the powdery fluorogypsum under the action of air flow, and conveying the coarse fluorogypsum powder obtained after screening to the second-stage crushing and screening device through the air flow;
The secondary crushing and screening device is used for further crushing and screening the crude fluorogypsum, and conveying the screened target fluorogypsum to a centrifugal vortex collector through airflow for centrifugal collection.
The first-stage crushing and screening device comprises a first material distributing barrel, a screening component and a crushing component, wherein the screening component is arranged in the first material distributing barrel and comprises a screening barrel and a through hole formed in the circumferential surface of the screening barrel, and the crushing component is arranged in the screening barrel;
optionally, the first-stage crushing and screening device comprises a first material distributing barrel, a crushing assembly and a screening assembly arranged in the first material distributing barrel, wherein the screening assembly comprises a screening barrel and a through hole formed in the circumferential surface of the screening barrel, and the crushing assembly is arranged in the screening barrel;
the crushing assembly comprises a first rotating shaft, a plurality of crushing rods arranged on the periphery of the first rotating shaft and a first driving piece for driving the first rotating shaft to rotate, an air outlet of the circulating fan and an outlet of the feed hopper are communicated with the screening barrel, the first rotating shaft drives the crushing rods to rotate, and circulating air flow generated by the circulating fan is used for crushing the powdery fluorogypsum in the screening barrel for one time to form coarse fluorogypsum powder;
the porosity of the screening barrel is more than 45%, the aperture of the through hole is 7-9mm, and the gap between the inner wall of the screening barrel and the crushing rod is smaller than the particle size of the crude fluorogypsum powder.
The powder-shaped fluorogypsum enters the screening barrel through the feeding hopper, the crushing rod rotates to crush the powder-shaped fluorogypsum for the first time, the circulating air flow promotes collision between the powder-shaped fluorogypsum, the circulating air flow brings the coarse fluorogypsum powder with the particle size smaller than the aperture of the through hole out of the screening barrel and enters the secondary crushing screening device to crush for the second time, the target fluorogypsum powder obtained after the secondary crushing enters the centrifugal vortex collector to collect, the coarse fluorogypsum powder with the particle size larger than the target powder-shaped fluorogypsum enters the screening barrel to crush for the third time through the secondary crushing screening device, the viscosity of the fluorogypsum is overcome under the action of circulating air flow media, the dispersity of the fluorogypsum is improved, and the crushing and powder selecting process of the fluorogypsum are integrally designed, so that the crushing and powder selecting efficiency of the fluorogypsum is improved.
Optionally, the second stage crushing screening plant sets up the top at the one-level crushing screening plant, the second stage crushing screening plant includes the second feed tank of vertical setting, second pivot, a plurality of setting are in bar screen plate and the pivoted second driving piece of drive second pivot on the second pivot periphery, second pivot and bar screen plate set up in the second feed tank, bar screen plate extends along the diameter direction of second pivot cross section and sets up, a plurality of evenly spaced between the bar screen plate, the clearance of bar screen plate extends along vertical direction, the clearance of bar screen plate is 40-60mm, the top and the centrifugal vortex collector of second feed tank are connected, and crude fluorogypsum powder follows the vertical side of second feed tank gets into, and the target gypsum powder gets into centrifugal vortex collector from second feed tank top.
Optionally, first pivot and screening bucket and the coaxial setting of first branch storage bucket, be provided with first clearance between first branch storage bucket inner wall and the screening bucket, first pivot is kept away from with the crushing pole to screening bucket inner wall and is connected with first branch storage bucket and screening bucket rotation. The screening device comprises a screening barrel, a crushing rod, a first rotating shaft, a screening barrel and a second rotating shaft, wherein the first rotating shaft is coaxially arranged with the screening barrel and the first separating barrel, a first gap is arranged between the inner wall of the first separating barrel and the screening barrel, a second gap is arranged between the inner wall of the screening barrel and one end of the crushing rod, which is far away from the first rotating shaft, and the first rotating shaft penetrates through the two ends of the first separating barrel and the screening barrel and is rotationally connected with the first separating barrel and the screening barrel.
The first clearance is convenient for circulate the air current and drives the crude fluorogypsum powder that gets into first feed cylinder from the through-hole and get into second grade screening selection powder device, and the second clearance has increased the collision between primary fluorogypsum powder and the screening barrel inner wall, has improved fluorogypsum's crushing efficiency.
Optionally, the feeder hopper sets up the top at the screening plant is smashed to the one-level, the bottom of feeder hopper is provided with first discharging pipe, the one end of first discharging pipe and the bottom intercommunication of feeder hopper, the other end of first discharging pipe runs through first feed dividing bucket and in screening bucket intercommunication along vertical direction.
Optionally, second feed bin bottom is provided with the second discharging pipe, the one end and the second feed bin bottom intercommunication of second discharging pipe, the other end of second discharging pipe runs through first feed bin and with screening bucket intercommunication along vertical direction, and the fluorine gypsum powder that the particle diameter is greater than the target fluorine gypsum powder gets into the screening bucket through the second discharging pipe.
The fluorogypsum powder with the particle size larger than that of the target fluorogypsum powder enters the screening barrel through the second discharging pipe to be crushed for three times under the action of gravity, so that the quality of the target fluorogypsum powder and the crushing and powder selecting efficiency of the fluorogypsum are improved.
Optionally, through first pipeline intercommunication between first feed bin and the second feed bin, crude fluorogypsum powder in the screening plant is smashed to the one-level gets into the second grade through first pipeline and smashes the screening plant, through second pipeline intercommunication between second feed bin and the centrifugal vortex collector, the target fluorogypsum powder passes through the second pipeline gets into centrifugal vortex collector, centrifugal vortex collector's bottom is provided with the receiving hopper.
The crude fluorogypsum powder enters the first pipeline under the action of the circulating air flow, and the crude fluorogypsum powder and the first pipeline are collided and dispersed, so that the crude fluorogypsum powder can be further crushed.
A powder particle fluorogypsum crushing and selecting method comprises the following steps:
Adding powdery fluorogypsum to be processed into a primary crushing and screening device, controlling the flow rate of air flow, introducing high-speed air flow into the primary crushing and screening device, and wrapping the granular fluorogypsum by the air flow to increase crushing efficiency and reduce adhesion of materials to the pipe wall;
the coarse fluorogypsum powder obtained by screening by the primary crushing and screening device is carried by high-speed air flow and enters the secondary crushing and screening device for further screening;
The target fluorogypsum powder separated by the secondary crushing and screening device is carried by high-speed air flow and enters a centrifugal vortex collector for centrifugal collection; and the rest fluorine gypsum particles enter the primary crushing and screening device to be further crushed and screened.
Optionally, the airflow velocity is 20-30m/s.
When the flow rate is less than 20m/s, particles larger than 1mm can be deposited and accumulated to block the pipeline, and when the flow rate is greater than 30m/s, the material particles can be caused to collide with the closing to adhere to the pipe wall, so that the operation of the fluorogypsum crushing, screening and powder sorting device is affected.
Optionally, the solid-gas ratio in the first-stage crushing and screening device is 300-500g/m 3.
When the solid-gas ratio is less than 300g/m 3, the required circulating air flow is large, the energy consumption is overlarge, and when the solid-gas ratio is more than 500g/m 3, the powder-like fluorogypsum is easy to settle to cause material accumulation, and the crushing process is influenced.
Optionally, the linear speed of a crushing rod in the primary crushing and screening device is 150-200m/s;
The rotating speed of the strip-shaped sieve plate in the secondary crushing and powder selecting device is 200-300 r/mm.
The invention has the beneficial effects that: the powder particle type fluorogypsum crushing and powder selecting integrated device is composed of the primary crushing and powder selecting device, the secondary crushing and powder selecting device, the centrifugal vortex collector, the circulating fan and the closed pipeline, so that the crushing and powder selecting efficiency of the fluorogypsum is improved due to material collision.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view showing the structure of a sieving barrel according to the present invention.
Fig. 3 is a schematic view of a structure of a strip-shaped screen plate according to the present invention.
The reference numbers and designations in the figures correspond to the following: 1. a frame; 2. a feed hopper; 21. a first discharge pipe; 3. a circulating fan; 31. an air outlet pipe; 4. a primary crushing and screening device; 41. a first dispensing barrel; 42. a screen assembly; 421. screening barrels; 422. a through hole; 43. a crushing assembly; 431. a first rotating shaft; 432. crushing the rod; 433. a first driving member; 5. a secondary crushing and screening device; 51. a second material dividing barrel; 511. a second discharge pipe; 512. a guide hopper; 52. a second rotating shaft; 53. a strip-shaped sieve plate; 54. a second driving member; 6. a centrifugal vortex collector; 61. a receiving hopper; 62. a material receiving pipe; 7. a first pipe; 8. a second pipe; 9. and a third pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the right leg portion is taken as an example, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides the following technical scheme:
referring to fig. 1, a powder selecting device for pulverizing powdered fluorogypsum comprises a frame 1, a feed hopper 2 and a circulating fan 3, wherein the feed hopper 2 and the circulating fan 3 are arranged on the frame 1, a primary pulverizing and screening device 4, a secondary pulverizing and screening device 5 and a centrifugal vortex collector 6 are sequentially arranged on the frame 1 along the airflow circulating direction of the circulating fan 3, and circulating airflow of the circulating fan 3 circulates in the primary pulverizing and screening device 4, the secondary pulverizing and screening device 5 and the centrifugal vortex collector 6, and the circulating fan 3, the primary pulverizing and screening device 4, the secondary pulverizing and screening device 5 and the centrifugal vortex collector 6 are in sealing connection.
Referring to fig. 1 and 2, a circulating fan 3 is detachably connected to a frame 1 through a locking bolt, a motor is detachably connected to the left side of the frame 1 through the locking bolt, the motor drives a rotor in the circulating fan 3 to rotate through a chain, a primary crushing device is arranged on the right side of the circulating fan 3, the primary screening device comprises a first material distributing barrel 41, a screening component 42 and a crushing component 43 which are arranged in the first material distributing barrel 41, the bottom of the first material distributing barrel 41 is detachably connected with the frame 1 through the locking bolt, the screening component 42 comprises a screening barrel 421 and a through hole 422 which is arranged on the circumferential surface of the screening barrel 421, the diameter of the through hole 422 is 7-9mm, in the embodiment, the aperture of the through hole 422 is 8mm, the porosity of the screening barrel 421 is more than 45%, the crushing component 43 is arranged in the screening barrel 421, the crushing assembly 43 comprises a first rotating shaft 431, a plurality of crushing rods 432 arranged on the periphery of the first rotating shaft 431 and a first driving part 433 for driving the first rotating shaft 431 to rotate, wherein the first rotating shaft 431 horizontally extends along the front-back direction, the first rotating shaft 431 is coaxially arranged with the screening barrel 421 and the first distributing barrel 41, the first rotating shaft 431 penetrates through the two ends of the first distributing barrel 41 and the screening barrel 421 and is rotationally connected with the first distributing barrel 41 and the screening barrel 421 through bearings, the first rotating shaft 431 is in sealing connection with the first distributing barrel 41 and the screening barrel 421, the first driving part 433 drives the first rotating shaft 431 to drive the crushing rods 432 to do circular motion at the linear speed of 150-200m/s, the powder-shaped fluorine gypsum in the stirring screening barrel 421 does irregular motion, so that large particles are dispersed into small particles in motion, in the embodiment, the first driving part 433 is a motor, the motor drives the first rotating shaft 431 to rotate through a chain, the linear velocity of the crushing rod 432 was 180m/s.
One end of the crushing rod 432 is fixedly connected with the first rotating shaft 431, the other end of the crushing rod 432 extends along the diameter direction of the cross section of the first rotating shaft 431, the diameter of the crushing rod 432 gradually increases along the direction away from the first rotating shaft 431, the first driving piece 433 drives the first rotating shaft 431 to rotate so as to drive the crushing rod 432 to rotate, the circulating air flow generated by the circulating fan 3 pulverizes the powdery fluorine gypsum in the screening barrel 421 once, coarse fluorine gypsum powder with the particle size smaller than the aperture of the through hole 422 is formed after pulverization, and the air flow blows the coarse gypsum powder in the screening barrel 421 into the first material distributing barrel 41.
The feeder hopper 2 sets up at the top of first order crushing screening plant 4, feeder hopper 2 passes through the lock bolt and is connected with frame 1, the bottom of feeder hopper 2 is provided with first discharging pipe 21, the one end of first discharging pipe 21 communicates and fixed connection with the bottom of feeder hopper 2, the other end of first discharging pipe 21 runs through the top of first feed division bucket 41 and communicates in screening bucket 421 along vertical direction, the powder fluorine gypsum has the feed inlet to get into screening bucket 421 through first discharging pipe 21, the solid-gas ratio of separation dress fluorine gypsum and gaseous is 300-500g/m 3, in this embodiment, solid-gas ratio is 400g/m 3, first discharging pipe 21 and feeder hopper 2, first feed division bucket 41 and screening bucket 421 are sealing connection respectively, for control feeding quantity, the one end that first discharging pipe 21 is close to feeder hopper 2 is provided with the air locking valve.
An air outlet pipe 31 is arranged between the circulating fan 3 and the first material distributing barrel 41, the air speed of an air outlet of the circulating fan 3 is 20-30m/s, an arrow in fig. 1 is an airflow flowing direction, the air outlet pipe 31 is horizontally arranged along the left-right direction, one end of the air outlet pipe 31 is communicated with the air outlet of the circulating fan 3 and fixedly connected with the air outlet, the other end of the air outlet pipe 31 penetrates through the first material distributing barrel 41 and is communicated with the screening barrel 421, the air outlet pipe 31 is in sealing connection with the first material distributing barrel 41 and the screening barrel 421, airflow generated by the circulating fan 3 enters the screening barrel 421 through the air outlet pipe 31, a first gap for the airflow to pass through is arranged between the inner wall of the first material distributing barrel 41 and the screening barrel 421, and a second gap for the powder fluorine gypsum to pass through is arranged between the inner wall of the screening barrel 421 and one end of the crushing rod 432 far from the first rotating shaft 431.
Referring to fig. 1 and 3, the secondary crushing and screening device 5 is disposed at the top of the first material distributing barrel 41, the secondary crushing and screening device 5 includes a second material distributing barrel 51 disposed vertically, a second rotating shaft 52, a plurality of bar-shaped screen plates 53 disposed on the circumferential surface of the second rotating shaft 52, and a second driving member 54 for driving the second rotating shaft 52 to rotate, the second rotating shaft 52 and the bar-shaped screen plates 53 are disposed in the second material distributing barrel 51, the second rotating shaft 52 and the second material distributing barrel 51 are disposed coaxially, the second driving member 54 is disposed at the top of the second material distributing barrel 51, a fixed end of the second driving member 54 is detachably connected with the frame 1 through a locking bolt, and a driving end of the second driving member 54 is fixedly connected with the top of the second rotating shaft 52, in this embodiment, the second driving member 54 is a motor.
A first pipeline 7 is arranged between the first distributing barrel 41 and the second distributing barrel, the first pipeline 7 extends along the vertical direction, one end opening of the first pipeline 7 is downward and is communicated with the middle of the right side of the first distributing barrel 41, the sinking coarse fluorogypsum powder is conveniently blown into the first pipeline 7, the other end opening of the first pipeline 7 is leftward and is communicated with the right side of the second distributing barrel 51, the first pipeline 7 is respectively and hermetically connected with the first distributing barrel 41 and the first distributing barrel 51, the inner diameter of the first pipeline 7 is the same as the width of the first gap, the coarse fluorogypsum powder in the first-stage crushing and screening device 4 collides with the pipe wall in the first pipeline 7 for further crushing, the coarse fluorogypsum powder is small in adhesion probability, the small particles cannot gather and grow up, the large particles are dispersed into a plurality of small particles in the high-speed operation process of being suspended by air flow, wherein the coarse fluorogypsum powder with the particle size of more than 1mm descends and is continuously crashed in the first pipeline 7, and the coarse fluorogypsum powder with the particle size of 1mm or less than or equal to 1mm is driven by the circulating air flow to enter the second-stage crushing device 5 by the circulating air flow.
The strip-shaped sieve plates 53 are arranged along the diameter direction of the cross section of the second rotating shaft 52 in an extending mode, the plurality of strip-shaped sieve plates 53 are evenly arranged at intervals, gaps of the strip-shaped sieve plates 53 extend along the vertical direction, the top and the bottom of the strip-shaped sieve plates 53 are respectively leveled with the top and the bottom of the first material distributing barrel 41 and the second material distributing barrel 51, the second driving piece 54 drives the second rotating shaft 52 to rotate and drives the strip-shaped sieve plates 53 to rotate at the rotating speed of 200-300r/min, crude fluorogypsum powder collides with the strip-shaped sieve plates 53 and the crude fluorogypsum powder collides with the crude fluorogypsum powder itself to be subjected to secondary crushing, and target fluorogypsum powder with the particle size smaller than or equal to 0.2mm enters the centrifugal vortex collector 6 along with air flow to be collected and stored.
The bottom intercommunication of second feed division bucket 51 is provided with guide hopper 512, guide hopper 512 bottom intercommunication is provided with second discharging pipe 511, guide hopper 512 and second feed division bucket 51 and guide hopper 512 sealing connection, the other end of second discharging pipe 511 runs through first feed division bucket 41 and with screening bucket 421 intercommunication along vertical direction, second discharging pipe 511 respectively with first feed division bucket 41, second feed division bucket 51 and screening bucket 421 sealing connection, the one end that second discharging pipe 511 is close to second feed division bucket 51 is provided with the air locking valve, the crude fluorine gypsum powder that the particle diameter is greater than 0.2mm in the second feed division bucket 51 passes through guide hopper 512 under the effect of gravity and gets into screening bucket 421 through second discharging pipe 511 and smashes for three times.
The top of the second dividing barrel 51 is communicated with the centrifugal vortex collector 6 through a second pipeline 8, the centrifugal vortex collector 6 is detachably connected with the frame 1 through a locking bolt, the centrifugal vortex collector 6 is arranged on the left side of the second dividing barrel 51, one end opening of the second pipeline 8 is downward and is communicated with the top end of the second dividing barrel 51, the other end opening of the second pipeline 8 is leftward and is communicated with the left side of the centrifugal vortex collector 6, the second pipeline 8 is respectively and hermetically connected with the second dividing barrel 51 and the centrifugal vortex collector 6, air current drives target fluorogypsum powder to enter the centrifugal vortex collector 6 through the second pipeline 8, a collecting hopper 61 is arranged at the bottom of the centrifugal vortex collector 6, a collecting pipe 62 is arranged at the bottom of the collecting hopper 61, a locking air valve is arranged at one end of the collecting pipe 62 close to the collecting hopper 61, the collecting pipe 62 and the centrifugal vortex collector 6 are hermetically connected, and the target fluorogypsum powder is collected in the collecting hopper 61 and is discharged out of the centrifugal vortex collector 6 through the collecting pipe 62 for collecting and packaging.
The top of centrifugal vortex collector 6 is provided with third pipeline 9, and the one end of third pipeline 9 communicates with centrifugal vortex collector 6's top, and the other end communicates with circulating fan 3's air inlet, and third pipeline 9 and centrifugal vortex collector 6 and circulating fan 3 sealing connection, air current get into circulating fan 3 through third pipeline 9 and circulate, and circulating fan 3 is accelerated the air current and is got into screening bucket 421 again and smash the selection powder.
The embodiment also discloses a powder grinding and selecting method for the powder-like fluorogypsum, which comprises the following steps:
The powder-like fluorogypsum is added into a screening barrel 421 through a feed hopper 2, a circulating fan 3, a first driving piece 433, a second driving piece 54 and a centrifugal vortex collector 6 are started at the same time, the wind speed of an air outlet of the circulating fan 3 is 25m/s, the first driving piece 433 drives a crushing rod 432 to do circular motion at a linear speed of 180m/s, the crushing rod 432 pulverizes the powder-like fluorogypsum in the screening barrel 421 once, and the circulating air flow blows the crude fluorogypsum powder with the particle size smaller than that of a through hole 422 out of the screening barrel 421;
The crude fluorogypsum powder enters a second material distributing barrel 51 through a first pipeline 7, a second driving piece 54 drives a strip-shaped sieve plate 53 with a gap of 50mm to rotate at a speed of 280r/min, the crude fluorogypsum powder is subjected to secondary crushing to obtain target fluorogypsum powder with a particle size of less than or equal to 200 mu m and crude fluorogypsum powder with a particle size of more than 200 mu m, and the crude fluorogypsum powder with a particle size of more than 200 mu m enters a first material distributing barrel 41 through a second pipeline 8 to be crushed for three times;
the target fluorogypsum powder is driven to enter the centrifugal vortex collector 6 by the circulating air flow, and enters the receiving hopper 61 for collection through the centrifugal vortex collector 6, and the circulating air flow enters the air inlet of the circulating fan 3 through the centrifugal vortex collector 6.
Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a powder device is selected in smashing of powder that powdered fluorine gypsum, includes frame (1) and feeder hopper (2) of setting on frame (1), its characterized in that still includes circulating fan (3), on frame (1) along circulating direction of air current of circulating fan (3) set gradually one-level smashing screening device (4), second grade smashing screening device (5) and centrifugal vortex collector (6), the air outlet of centrifugal vortex collector (6) is connected with the air intake of circulating fan (3), circulating air current of circulating fan (3) circulate in one-level smashing screening device (4), second grade smashing screening device (5) and centrifugal vortex collector (6), sealed connection is formed between circulating fan (3), one-level smashing screening device (4), second grade smashing screening device (5) and centrifugal vortex collector (6);
The first-stage crushing and screening device (4) is used for crushing and screening the powdery fluorine gypsum under the action of air flow, and conveying the coarse fluorine gypsum powder obtained after screening to the second-stage crushing and screening device (5) through the air flow;
The secondary crushing and screening device (5) is used for further crushing and screening the crude fluorogypsum and conveying the screened target fluorogypsum to the centrifugal vortex collector (6) for centrifugal collection through airflow.
2. A powdered fluorogypsum pulverizing and selecting device according to claim 1, wherein said primary pulverizing and screening device (4) comprises a first material distributing barrel (41), a pulverizing assembly (43) and a screening assembly (42) arranged in the first material distributing barrel (41), said screening assembly (42) comprises a screening barrel (421) and a through hole (422) arranged on the circumferential surface of the screening barrel (421), said pulverizing assembly (43) is arranged in the screening barrel (421);
The crushing assembly (43) comprises a first rotating shaft (431), a plurality of crushing rods (432) arranged on the periphery of the first rotating shaft (431) and a first driving piece (433) for driving the first rotating shaft (431) to rotate, an air outlet of the circulating fan (3) and an outlet of the feed hopper (2) are communicated with the screening barrel (421), the first rotating shaft (431) drives the crushing rods (432) to rotate, and circulating air flow generated by the circulating fan (3) pulverizes powdery fluorogypsum in the screening barrel (421) for one time to form coarse fluorogypsum powder;
The porosity of the screening barrel (421) is more than 45%, the aperture of the through hole (422) is 7-9mm, and the gap between the inner wall of the screening barrel (421) and the crushing rod (432) is smaller than the particle size of the crude fluorogypsum powder.
3. A powder selecting device for pulverizing powdered fluorogypsum according to claim 2, wherein the secondary pulverizing and screening device (5) is disposed at the top of the primary pulverizing and screening device (4), the secondary pulverizing and screening device (5) comprises a vertically disposed second distributing drum (51), a second rotating shaft (52), a plurality of strip-shaped screening plates (53) disposed on the circumferential surface of the second rotating shaft (52) and a second driving member (54) for driving the second rotating shaft (52) to rotate, the second rotating shaft (52) and the strip-shaped screening plates (53) are disposed in the second distributing drum (51), the strip-shaped screening plates (53) are disposed along the diameter direction of the cross section of the second rotating shaft (52) in an extending manner, a plurality of strip-shaped screening plates (53) are disposed at uniform intervals, the gaps of the strip-shaped screening plates (53) are disposed along the vertical direction, the gaps of the strip-shaped screening plates (53) are 40-60mm, the top of the second distributing drum (51) is connected with a centrifugal vortex collector (6), and coarse fluorogypsum powder enters the centrifugal vortex collector (6) from the vertical screening plates (51) from the second distributing drum side.
4. The powder selecting device for crushing powdery fluorogypsum according to claim 1, wherein the first rotating shaft (431) is coaxially arranged with the screening barrel (421) and the first distributing barrel (41), a first gap is arranged between the inner wall of the first distributing barrel (41) and the screening barrel (421), and the inner wall of the screening barrel (421) is far away from the first rotating shaft with the crushing rod (432) and is rotationally connected with the first distributing barrel (41) and the screening barrel (421). The screening device comprises a screening barrel, a crushing rod, a first rotating shaft, a screening barrel and a second rotating shaft, wherein the first rotating shaft is coaxially arranged with the screening barrel and the first separating barrel, a first gap is arranged between the inner wall of the first separating barrel and the screening barrel, a second gap is arranged between the inner wall of the screening barrel and one end of the crushing rod, which is far away from the first rotating shaft, and the first rotating shaft penetrates through the two ends of the first separating barrel and the screening barrel and is rotationally connected with the first separating barrel and the screening barrel.
5. The powder selecting device for crushing powdery fluorogypsum according to claim 1, wherein the feeding hopper (2) is arranged at the top of the primary crushing and screening device (4), a first discharging pipe (21) is arranged at the bottom of the feeding hopper (2), one end of the first discharging pipe (21) is communicated with the bottom of the feeding hopper (2), and the other end of the first discharging pipe (21) penetrates through the first material distributing barrel (41) along the vertical direction and is communicated with the screening barrel (421).
6. A powder selecting device for pulverizing powdered fluorogypsum according to claim 3, wherein a second discharging pipe (511) is arranged at the bottom of the second discharging barrel (51), one end of the second discharging pipe (511) is communicated with the bottom of the second discharging barrel (51), the other end of the second discharging pipe (511) penetrates through the first discharging barrel (41) along the vertical direction and is communicated with the screening barrel (421), and fluorogypsum powder with a particle size larger than that of the target fluorogypsum powder enters the screening barrel (421) through the second discharging pipe (511).
7. A powder selecting device for crushing powder and granular fluorogypsum according to claim 3, wherein the first distributing barrel (41) is communicated with the second distributing barrel (51) through a first pipeline (7), the crude fluorogypsum powder in the first-stage crushing and screening device (4) enters the second-stage crushing and screening device (5) through the first pipeline (7), the second distributing barrel (51) is communicated with the centrifugal vortex collector (6) through a second pipeline (8), the target fluorogypsum powder enters the centrifugal vortex collector (6) through the second pipeline (8), and a receiving hopper (61) is arranged at the bottom of the centrifugal vortex collector (6).
8. A method for pulverizing and selecting powder of powdered fluorogypsum, characterized in that the pulverizing and selecting of the powdered fluorogypsum are performed by using the device according to any one of claims 1 to 7; the method at least comprises the following steps:
Adding powdery fluorine gypsum to be processed into a primary crushing and screening device (4), controlling the airflow velocity, introducing high-speed airflow into the primary crushing and screening device (4), and wrapping the granular fluorine gypsum by using the airflow to increase crushing efficiency and reduce adhesion of materials to pipe walls;
the coarse fluorogypsum powder obtained by screening by the primary crushing and screening device (4) is carried by high-speed air flow and enters the secondary crushing and screening device (5) for further screening;
The target fluorogypsum powder separated by the secondary crushing and screening device (5) is carried by high-speed air flow and enters a centrifugal vortex collector (6) for centrifugal collection; the rest fluorine gypsum particles enter the primary crushing and screening device (4) to be crushed and screened further.
9. A method for pulverizing and selecting powdered fluorogypsum as defined in claim 8, wherein said airflow velocity is 20-30m/s.
10. The method for pulverizing and selecting powder of powdered fluorogypsum according to claim 8, wherein the solid-gas ratio in the primary pulverizing and screening device (4) is 300-500g/m 3;
The linear speed of the crushing rod (432) in the primary crushing and screening device (4) is 150-200m/s;
The rotating speed of the strip-shaped sieve plate in the secondary crushing and powder selecting device (5) is 200-300 r/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410220969.3A CN117960333A (en) | 2024-02-28 | 2024-02-28 | Powder grinding and selecting device and method for powdery fluorogypsum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410220969.3A CN117960333A (en) | 2024-02-28 | 2024-02-28 | Powder grinding and selecting device and method for powdery fluorogypsum |
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| CN117960333A true CN117960333A (en) | 2024-05-03 |
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| CN202410220969.3A Pending CN117960333A (en) | 2024-02-28 | 2024-02-28 | Powder grinding and selecting device and method for powdery fluorogypsum |
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| CN (1) | CN117960333A (en) |
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