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CN-121972306-A - Centrifugal separation method for magnesium sulfate production and processing

CN121972306ACN 121972306 ACN121972306 ACN 121972306ACN-121972306-A

Abstract

The invention relates to the technical field of magnesium sulfate production, in particular to a centrifugal separation method for magnesium sulfate production and processing, which comprises the steps of firstly adjusting a feeding part, and atomizing and dispersing the magnesium sulfate slurry, reversely conveying the magnesium sulfate slurry to the inner wall of the rotary drum, starting centrifugal separation of the rotary drum, synchronously scraping the inner wall material, and stopping the machine to discharge the solid material after the separation is completed. According to the invention, by arranging the feeding and centrifugal matching structure, compared with the traditional straight-falling feeding mode, the adjustable atomizing dispersion and reverse rotation feeding mode is adopted, so that the slurry can be uniformly dispersed, thinned and spread on the inner wall of the centrifugal drum smoothly, each part of slurry can be fully subjected to the centrifugal force effect, the thoroughness of solid-liquid separation is greatly improved, the water content of a solid finished product is effectively reduced, the purity of magnesium sulfate crystals is improved, the feeding parameters can be adjusted according to the concentration of the slurry, the separation operation of magnesium sulfate slurries with different concentrations is adapted, and the application range of centrifugal separation equipment is improved.

Inventors

  • WANG SHENGWEI
  • DING WENWEN
  • HUANG XIAOQING

Assignees

  • 江苏省勤奋药业有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (10)

  1. 1. The centrifugal separation method for magnesium sulfate production and processing is characterized by comprising the following steps of: Step one, starting a movable servo electric cylinder (28) on two sides of the top of a fixed mounting frame (36), driving a movable connecting frame (23) to move downwards through the driving end of the electric cylinder, guiding and limiting by matching with a movable sliding rod (29), driving a movable feeding pipe (17) to slide downwards along a fixed feeding pipe (16), feeding a rotary material distributing frame (18) into a proper position inside a centrifugal rotary drum (8), adjusting the opening of a material distributing control plate (20) according to the concentration of magnesium sulfate slurry, driving the material distributing control plate (20) to rotate through controlling a servo motor (22), adjusting the discharging size of a material distributing opening (19), and adapting to the dispersion feeding requirements of slurries with different concentrations; Step two, starting a slurry conveying pipeline, enabling magnesium sulfate production slurry to enter a fixed feeding pipe (16) through a material conveying interface (15), enabling the slurry to flow into an atomization cavity (21) in a rotary material distributing frame (18) along a movable feeding pipe (17), enabling external air to enter an upper air guide cavity (30) through an air inlet interface (35), enabling the external air to flow into a lower air guide cavity (32) through an air guide runner (31) and an air guide pipe (34), finally enabling the slurry in the cavity to be sprayed into the atomization cavity (21) through an air inlet nozzle (33), enabling a material distributing driving motor (27), enabling the rotary connecting block (24) to rotate with the rotary material distributing frame (18) through meshing transmission of a matched gear (26) and driving a toothed ring (25), controlling the rotary material distributing frame (18) to rotate opposite to the centrifugal rotary drum (8), and enabling the atomized slurry to be fed into the inner wall of the centrifugal drum (8) in a uniform tangential mode through the material distributing opening (19) to form a thin and uniform liquid film; Starting a centrifugal driving motor (11) at one side of the top of the separation shell (2), driving a centrifugal rotary drum (8) to rotate at a high speed through meshing transmission of a driving gear (12) and a driving tooth socket (10) at the periphery of a driving connecting frame (9), separating magnesium sulfate slurry by utilizing centrifugal force, enabling separated centrifugal liquid to enter a separation cavity through a centrifugal separation hole, collecting the separated centrifugal liquid through a centrifugal liquid discharge port (14), discharging and collecting the centrifugal liquid through a centrifugal liquid discharge pipe (6), wherein in the separation process, phase change materials in a phase change heat exchange cavity (13) automatically absorb heat generated by centrifugal friction by utilizing phase change latent heat; In the centrifugal separation process, an auxiliary treatment assembly (5) is started, a linear sliding table in a driving frame (37) drives a sliding frame (38) to move downwards, an auxiliary frame (39) stretches into two sides in the centrifugal rotary drum (8), the position of the auxiliary frame (39) is adjusted through the linear sliding table at the bottom of the sliding frame (38), a rotary scraping frame (41) is close to the inner wall of the centrifugal rotary drum (8), an auxiliary motor is started to drive the rotary scraping frame (41) to rotate, solid materials accumulated on the inner wall are scraped into the auxiliary frame (39), and materials are fed through a scraping opening (42) and discharged through a discharging opening (43); And fifthly, after the magnesium sulfate slurry is completely centrifugally separated, sequentially stopping slurry conveying and external air supply, closing a centrifugal driving motor (11), a material separating driving motor (27) and an auxiliary motor, opening a discharge control valve in a separated material discharge pipe (7) after the centrifugal rotary drum (8) is completely stopped, discharging and collecting the centrifugally separated magnesium sulfate solid finished product through the separated material discharge pipe (7), and completing the centrifugal separation operation of the whole batch of materials.
  2. 2. The centrifugal separation method for magnesium sulfate production and processing according to claim 1 is characterized by further comprising a centrifugal separation device applied to the centrifugal separation method for magnesium sulfate production and processing, wherein the centrifugal separation device comprises a fixed bottom frame (1) and a separation shell (2), the separation shell (2) is fixedly arranged at the top of the fixed bottom frame (1), a centrifugal part (3) is rotatably arranged in the separation shell (2), a feeding part (4) is further arranged at the top of the separation shell (2), the feeding part (4) is used for feeding the production slurry of magnesium sulfate into the centrifugal part (3) in a rotating manner, centrifugal separation processing is carried out on the production slurry of magnesium sulfate in cooperation with the centrifugal part (3), auxiliary processing components (5) are further arranged on two sides in the centrifugal part (3) and are used for turning materials of the production slurry of magnesium sulfate in the centrifugal separation process, and a separation material discharge pipe (7) is fixedly arranged in the middle of the bottom of the separation shell (2).
  3. 3. The centrifugal separation method for magnesium sulfate production and processing according to claim 2, wherein the centrifugal part (3) comprises a centrifugal rotary drum (8) which is arranged in the separation shell (2) in a rotating mode, a separation cavity is arranged between the outer peripheral surface of the centrifugal rotary drum (8) and the inner wall of the separation shell (2), a plurality of phase-change heat exchange cavities (13) are arranged in the separation shell (2), phase-change materials are filled in the phase-change heat exchange cavities (13), a plurality of centrifugal liquid discharge ports (14) are arranged at the bottom of the separation cavity, a centrifugal liquid discharge pipe (6) is further fixedly arranged at the bottom of the separation shell (2), and the interior of the centrifugal liquid discharge pipe (6) is communicated with the interior of the plurality of centrifugal liquid discharge ports (14).
  4. 4. The centrifugal separation method for magnesium sulfate production and processing according to claim 3, wherein a driving connecting frame (9) is fixedly arranged at the top of the centrifugal rotary drum (8), a driving tooth groove (10) is formed in the outer peripheral surface of the driving connecting frame (9), a centrifugal driving motor (11) is fixedly arranged at one side of the top of the separation machine shell (2), a driving gear (12) is fixedly arranged at one end of an output shaft of the centrifugal driving motor (11), and tooth surfaces of the driving gear (12) are in meshed transmission with tooth surfaces of the driving tooth groove (10).
  5. 5. The centrifugal separation method for magnesium sulfate production and processing according to claim 2, wherein the feeding part (4) comprises a fixed feeding pipe (16) and a movable feeding pipe (17), a fixed mounting frame (36) is fixedly arranged at the top of the separation machine shell (2) through a connecting block, the fixed feeding pipe (16) is fixedly arranged in the middle of the top of the fixed mounting frame (36), a material conveying interface (15) is fixedly arranged at the top end of the fixed feeding pipe (16), a movable connecting frame (23) is movably arranged below the fixed mounting frame (36), the movable feeding pipe (17) is fixedly arranged in the movable connecting frame (23), and the top end of the movable feeding pipe (17) is in sliding connection with the inside of the fixed feeding pipe (16).
  6. 6. The centrifugal separation method for magnesium sulfate production and processing according to claim 5, wherein a rotary material distribution frame (18) is rotatably arranged at the bottom of the movable connecting frame (23), the middle part of the top of the rotary material distribution frame (18) is rotatably connected with the bottom end of the movable feeding pipe (17), an atomization cavity (21) is arranged in the middle part of the inside of the rotary material distribution frame (18), a plurality of material distribution openings (19) communicated with the inside of the atomization cavity (21) are formed in the outer peripheral surface of the rotary material distribution frame (18), a material distribution control plate (20) is rotatably arranged in each material distribution opening (19), and a plurality of control servo motors (22) for driving the material distribution control plate (20) to rotate are fixedly arranged at the top of the rotary material distribution frame (18).
  7. 7. The centrifugal separation method for magnesium sulfate production and processing according to claim 5, wherein an upper air guide cavity (30) is arranged above the inside of the fixed feeding pipe (16), a plurality of air guide channels (31) are arranged at the bottom of the upper air guide cavity (30), an air inlet interface (35) communicated with the inside of the upper air guide cavity (30) is fixedly arranged above one side of the fixed feeding pipe (16), a plurality of air guide pipes (34) are fixedly arranged on the outer peripheral surface of the movable feeding pipe (17), the top ends of the plurality of air guide pipes (34) are respectively connected with the inside of the plurality of air guide channels (31) in a sliding mode, a lower air guide cavity (32) is arranged below the inside of the movable feeding pipe (17), the inside of the lower air guide cavity (32) is communicated with the inside of the plurality of air guide pipes (34), a plurality of air inlet nozzles (33) are fixedly arranged at the bottom of the movable feeding pipe (17), and the inside of the plurality of air inlet nozzles (33) are all communicated with the inside of the lower air guide cavity (32).
  8. 8. The centrifugal separation method for magnesium sulfate production and processing according to claim 6, wherein a rotary connecting block (24) is fixedly arranged at the top of the rotary material separating frame (18), the top of the rotary connecting block (24) is positioned in the movable connecting frame (23) and is in rotary connection, a driving toothed ring (25) is fixedly arranged at the top of the rotary connecting block (24), a material separating driving motor (27) is fixedly arranged in the movable connecting frame (23), a matching gear (26) is fixedly arranged at one end of an output shaft of the material separating driving motor (27), and the tooth surface of the matching gear (26) is in meshed transmission with the tooth surface of the driving toothed ring (25).
  9. 9. The centrifugal separation method for magnesium sulfate production and processing according to claim 5, wherein movable servo electric cylinders (28) are fixedly arranged on two sides of the top of the fixed mounting frame (36), driving ends of the two movable servo electric cylinders (28) are fixedly connected with the top of the movable connecting frame (23), movable sliding rods (29) are fixedly arranged on the front side and the rear side of the top of the movable connecting frame (23), and the top ends of the two movable sliding rods (29) are in sliding connection with the inside of the fixed mounting frame (36).
  10. 10. The centrifugal separation method for magnesium sulfate production and processing according to claim 2, wherein the auxiliary treatment assembly (5) comprises a driving frame (37) and sliding frames (38), wherein the driving frames (37) are fixedly arranged on two sides of the top of the fixed mounting frame (36), the sliding frames (38) are arranged in the two driving frames (37) in a sliding mode through a linear sliding table, an auxiliary mounting frame (40) is arranged at the bottom of the sliding frame (38) in a sliding mode through the linear sliding table, an auxiliary frame (39) is fixedly arranged at the bottom of the auxiliary mounting frame (40), a rotary scraping frame (41) is rotatably arranged in the auxiliary mounting frame (39), an auxiliary motor for driving the rotary scraping frame (41) to rotate is fixedly arranged in the auxiliary mounting frame (40), scraping holes (42) and discharging holes (43) are respectively formed in two sides of the auxiliary mounting frame (39), and one side of the rotary scraping frame (41) extends to the outside of the scraping holes (42).

Description

Centrifugal separation method for magnesium sulfate production and processing Technical Field The invention relates to the technical field of magnesium sulfate production, in particular to a centrifugal separation method for magnesium sulfate production and processing. Background In the industrial production and processing flow of magnesium sulfate, centrifugal separation is a key process for realizing solid-liquid separation of slurry and purification of magnesium sulfate crystals, most of conventional centrifugal separation equipment at present adopts a straight-falling type feeding structure, and slurry is directly fed into a centrifugal rotary drum, so that the conditions of slurry stacking and uneven dispersion easily occur, partial slurry is too thick, centrifugal force cannot fully act, solid-liquid separation is incomplete, the water content of a finished product is high, and the purity of crystals is insufficient. In the operation process of the traditional centrifugal equipment, friction heat generated by high-speed rotation of the rotary drum is difficult to dissipate, local temperature is easy to exceed a stable region of magnesium sulfate crystals, crystals are melted and agglomerated, the quality of products is affected, an external cooling structure is additionally arranged, the whole structure of the equipment is complex, the operation and maintenance cost is increased, the fault probability is increased, meanwhile, high-concentration magnesium sulfate slurry is extremely easy to adhere to the inner wall of the rotary drum during centrifugal separation, scaling is formed after long-term accumulation, screening holes of the rotary drum are blocked, the centrifugal separation efficiency is reduced, uneven stress of the rotary drum and operation shaking are caused, the equipment is even damaged, the conventional equipment lacks an adaptive inner wall cleaning and material turning structure, the manual cleaning difficulty is high, the shutdown time is long, and the continuous and high-efficiency production requirement is difficult to meet. Therefore, we propose a centrifugal separation method for magnesium sulfate production and processing. Disclosure of Invention Compared with the traditional straight-falling feeding mode, the centrifugal separation method for magnesium sulfate production and processing adopts an adjustable atomization dispersing and reverse rotation feeding mode, can uniformly disperse and thin and evenly spread the slurry on the inner wall of a centrifugal drum, ensures that each part of slurry can fully receive the centrifugal force effect, greatly improves the thoroughness of solid-liquid separation, effectively reduces the water content of a solid finished product, improves the purity of magnesium sulfate crystals, simultaneously can adjust feeding parameters according to the concentration of the slurry, adapts the separation operation of magnesium sulfate slurries with different concentrations and improves the application range of centrifugal separation equipment. In order to achieve the above purpose, the invention is realized by the following technical scheme: A centrifugal separation method for magnesium sulfate production and processing comprises the following steps: step one, starting movable servo electric cylinders on two sides of the top of a fixed mounting frame, driving a movable connecting frame to move downwards through the driving end of the electric cylinder, guiding and limiting by matching with a movable sliding rod, driving a movable feeding pipe to slide downwards along a fixed feeding pipe, feeding a rotary material distributing frame into a proper position inside a centrifugal rotary drum, adjusting the opening of a material distributing control plate according to the concentration of magnesium sulfate slurry, driving the material distributing control plate to rotate through a control servo motor, adjusting the discharging size of a material distributing opening, and adapting to the dispersion feeding requirements of slurries with different concentrations; Step two, starting a slurry conveying pipeline, enabling magnesium sulfate production slurry to enter a fixed feeding pipe through a material conveying interface, enabling the slurry to flow into an atomization cavity in a rotary material distributing frame along a movable feeding pipe, enabling external gas to enter an upper gas guide cavity through an air inlet interface, enabling the external gas to flow into a lower gas guide cavity through a gas guide runner and a gas guide pipe, finally spraying the slurry in the cavity into the atomization cavity through an air inlet nozzle, atomizing and dispersing the slurry, starting a material distributing driving motor, driving a rotary connecting block to rotate with the rotary material distributing frame through meshing transmission of a matched gear and a driving toothed ring, controlling the rotary material distributing frame to rotate opposite to the