CN115253407B - Preparation system of high-purity fire retardant magnesium hydroxide - Google Patents
Preparation system of high-purity fire retardant magnesium hydroxide Download PDFInfo
- Publication number
- CN115253407B CN115253407B CN202210871200.9A CN202210871200A CN115253407B CN 115253407 B CN115253407 B CN 115253407B CN 202210871200 A CN202210871200 A CN 202210871200A CN 115253407 B CN115253407 B CN 115253407B
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- Prior art keywords
- frame
- filter
- filter frame
- magnesium hydroxide
- air pipe
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 title claims abstract description 44
- 239000000347 magnesium hydroxide Substances 0.000 title claims abstract description 44
- 229910001862 magnesium hydroxide Inorganic materials 0.000 title claims abstract description 44
- 239000003063 flame retardant Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 23
- 230000005291 magnetic effect Effects 0.000 claims description 12
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 20
- 238000001914 filtration Methods 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 24
- 230000008569 process Effects 0.000 description 20
- 238000001125 extrusion Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 229960002337 magnesium chloride Drugs 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 235000014510 cooky Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 1
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229960005489 paracetamol Drugs 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/172—Plate spreading means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/32—Removal of the filter cakes
- B01D25/38—Removal of the filter cakes by moving parts, e.g. scrapers, contacting stationary filter elements sprayers
- B01D25/386—Nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention belongs to the field of chemical preparation, in particular to a preparation system of high-purity fire retardant magnesium hydroxide, which comprises a frame, wherein the frame has a rigid carrier mounting function; the frame is provided with a cake unloading vehicle in a sliding manner; the cake discharging vehicle is controlled by the control system through network connection; the filter frames are movably arranged on the frame, and filter cloth is fixedly arranged on the outer surfaces of the filter frames; the outer surface of the filter frame is fixedly provided with a convex elastic sheet; the outer surface of the filter frame is provided with grooves, and the grooves on the same filter frame are not contacted with the convex elastic sheet; the frame is provided with an opening and closing mechanism which is used for stabilizing the operation of the filter frame; the invention has simple structure and solves the technical problem that the magnesium hydroxide slurry has a part adhered to the filter cloth on the surface of the filter frame after the press filtration is completed because the viscosity of the magnesium hydroxide slurry is overlarge.
Description
Technical Field
The invention belongs to the field of chemical preparation, and particularly relates to a preparation system of high-purity flame retardant magnesium hydroxide.
Background
In the preparation of the modified superfine magnesium hydroxide flame retardant, magnesium chloride hexahydrate and sodium hydroxide are taken as raw materials, polyvinyl alcohol, fatty alcohol polyoxyethylene ether and acetaminophen are taken as surface modifiers, and a direct precipitation method and a supergravity method are adopted to prepare the superfine magnesium hydroxide flame retardant with higher purity, good dispersibility, small particle size, uniform distribution and good flame retardant property;
firstly, respectively placing magnesium chloride solution and sodium hydroxide solution in different liquid tanks, starting a stirring device, starting a heating and heat-preserving device to heat the magnesium chloride solution and the sodium hydroxide solution, controlling the temperature of the magnesium chloride solution and the sodium hydroxide solution to be 60 ℃, enabling two raw material solutions to enter a liquid inlet pipe through a corrosion-resistant pump at a volume flow of 40L/h, impacting the two raw material solutions at a nozzle of the liquid inlet pipe in opposite directions at a primary speed of 8.47m/s to form a fan-shaped liquid level, enabling the impacted solution to enter an annular filler with a hypergravity factor of 55.31 and rotating at a rotating speed to form magnesium hydroxide slurry, and filtering, drying and grinding the magnesium hydroxide slurry through a plate-and-frame filter press to obtain magnesium hydroxide powder;
in the process of filtering the magnesium hydroxide slurry through the plate-and-frame filter press, if the viscosity of the magnesium hydroxide slurry between filter frames is too high, after the plate-and-frame filter press finishes filter pressing of the magnesium hydroxide slurry, a cake unloading vehicle separates the filter frames on the plate-and-frame filter press, and a part of the magnesium hydroxide slurry after filter pressing is adhered to filter cloth on the surfaces of the filter frames, so that the working time of the plate-and-frame filter press is prolonged, the use cost is increased, and the condition that the filter press cannot filter press is caused seriously; therefore, the magnesium hydroxide adhered on the filter cloth after pressure filtration needs to be cleaned manually, which is time-consuming and labor-consuming.
In view of the above, the present invention provides a preparation system of high-purity fire retardant magnesium hydroxide, which solves the above technical problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation system of high-purity flame retardant magnesium hydroxide, which solves the problems: because the viscosity of the magnesium hydroxide slurry is too high, the magnesium hydroxide slurry has a part of technical problem of adhering to the filter cloth on the surface of the filter frame after the press filtration is completed;
in order to achieve the above purpose, the present invention is realized by the following technical scheme:
the invention provides a preparation system of high-purity fire retardant magnesium hydroxide, which comprises:
a frame having a rigid mounting carrier function;
the cake discharging vehicle is slidably arranged on the frame;
the cake discharging vehicle is controlled by the control system through network connection;
the filter frame is movably provided with uniformly distributed filter frames, and the outer surface of the filter frame is fixedly provided with filter cloth;
the outer surface of the filter frame is fixedly provided with a convex spring plate;
the outer surface of the filter frame is provided with grooves, and the grooves on the same filter frame are not contacted with the convex elastic sheet;
the opening and closing mechanism is arranged on the frame and used for stabilizing the operation of the filter frame.
Preferably, the edge of the groove is fixedly provided with a concave elastic sheet, one side, away from the filter frame, of the convex elastic sheet is fixedly provided with a magnetic block, and the concave elastic sheet is made of ferromagnetic materials.
Preferably, two groups of the convex elastic pieces and the concave elastic pieces are arranged on the outer surface of the filter frame, and the convex elastic pieces and the concave elastic pieces are distributed in a staggered mode.
Preferably, an air passage is formed in the filter frame.
Preferably, the filter cloth is made of a high-elasticity rubber film.
Preferably, the opening and closing mechanism includes:
the fixing frame is fixedly provided with a fixing frame with a rigid carrier mounting function;
the movable blocks are arranged on the fixed frame in a sliding manner;
the filter comprises a movable block, wherein the two ends of the movable block are movably provided with the movable block, one end of the movable block, which is close to the movable block, of the movable block is provided with a movable groove, and the other end of the movable block is rotatably connected with the outer side of the filter frame.
Preferably, an air pipe is arranged on one surface of the rotating block, which is close to the movable block, and evenly distributed spray heads are fixedly arranged on the outer wall of the air pipe.
Preferably, the two ends of the air pipe are fixedly provided with mounting blocks, the outer surface of the rotating block is provided with an adjusting groove, and the rotating block is fixedly connected with the mounting blocks through bolts.
Preferably, the aperture of the nozzle close to one end of the air pipe is larger than the aperture of the nozzle far away from one end of the air pipe.
Preferably, the nozzles on the air pipes are arranged in two groups, one group of nozzles face the filter frame, the other group of nozzles face the other air pipe, and the opposite nozzles on the two air pipes are distributed in a staggered mode.
The beneficial effects of the invention are as follows:
1. according to the preparation system of the high-purity fire retardant magnesium hydroxide, the hydraulic rod drives the extrusion plate to retreat after the press filtration is completed, the cake unloading vehicle separates the filter frames, in the process of separating the filter frames, the convex elastic sheet restores to the original state, and due to the elastic potential energy of the convex elastic sheet, a certain impact is caused on the filter cloth on the outer surface of the filter frame, so that the cake adhered to the filter cloth is sprung off, and the condition that the subsequent manual work needs to clean the cake adhered to the filter cloth again is reduced.
2. According to the preparation system of the high-purity fire retardant magnesium hydroxide, in the process of separating the filter frames by the cake unloading vehicle, the filter frames drive the rotating blocks of the filter frames to rotate and drive the movable blocks to slide on the fixed frame, the movable blocks drive the rotating blocks on the other filter frames to rotate, after gaps between the two filter frames reach a certain distance, the spray heads on the rotating blocks spray the opposite surfaces of the two filter frames, so that powder cakes adhered to filter cloth are cleaned, and at the moment, a hose is connected with an external air source, so that the condition that the powder cakes adhered to the filter cloth are cleaned again by subsequent manual work is reduced.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a main block diagram of the present invention;
FIG. 2 is a block diagram of a filter frame of the present invention;
FIG. 3 is a block diagram of the cookie unloading vehicle of the present invention;
FIG. 4 is a cross-sectional view of a filter frame of the present invention;
FIG. 5 is a block diagram of the opening and closing mechanism of the present invention;
fig. 6 is a structural view of the trachea of the present invention.
In the figure, 1, a rack; 2. a cake unloading vehicle; 3. a filter frame; 31. a convex spring plate; 32. a groove; 33. a concave spring plate; 34. a magnetic block; 35. an airway; 37. a filter cloth; 4. an opening and closing mechanism; 41. a fixing frame; 42. a movable block; 43. a rotating block; 44. a movable groove; 45. an air pipe; 46. a spray head; 47. a mounting block; 48. and an adjusting groove.
Detailed Description
For the purpose of making the objects, technical means and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is apparent that the described embodiments are 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 invention provides a preparation system of high-purity fire retardant magnesium hydroxide, which solves the problems that: because the viscosity of the magnesium hydroxide slurry is too high, the magnesium hydroxide slurry has a part of technical problem of adhering to the filter cloth on the surface of the filter frame after the press filtration is completed;
the technical scheme in the embodiment of the invention aims to solve the technical problems, and the overall thought is as follows: by arranging the convex elastic sheet and the concave elastic sheet, the convex elastic sheet and the concave elastic sheet cause certain impact on the filter cloth on the outer surface of the filter frame in the deformation and recovery process, so that the powder cake adhered on the filter cloth is sprung off, and the condition that the powder cake adhered on the filter cloth needs to be cleaned again by subsequent manual work is reduced; by arranging the air pipe and the spray heads, after a gap between the two filter frames reaches a certain distance, the two groups of spray heads on the air pipe respectively clean the magnesium hydroxide powder cakes adhered on the two filter frames, so that the condition that the powder cakes adhered on the filter cloth are required to be cleaned again in the follow-up manual work is reduced;
the invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Implementing the following steps:
as shown in fig. 1 to 4, the preparation system of the high-purity flame retardant magnesium hydroxide comprises a frame 1, wherein a cake unloading vehicle 2 is slidably arranged on the frame 1; the frame 1 is movably provided with filter frames 3 which are uniformly distributed; the outer surface of the filter frame 3 is fixedly provided with a convex elastic sheet 31; the outer surface of the filter frame 3 is provided with a groove 32, and the groove 32 on the same filter frame 3 is not contacted with the convex elastic sheet 31; the radian of the groove 32 is smaller than that of the convex spring piece 31;
an opening and closing mechanism 4 is arranged on the frame 1, and the opening and closing mechanism 4 is used for stabilizing the operation of the filter frame 3;
the edge of the groove 32 is fixedly provided with a concave elastic sheet 33, and one side of the convex elastic sheet 31 far away from the filter frame 3 is fixedly provided with a magnetic block 34;
an air passage 35 is formed in the filter frame 3;
wherein:
a. the extrusion plate is movably arranged in the frame 1 and fixedly connected with an external hydraulic rod, one end of the external hydraulic rod, which is far away from the extrusion plate, is fixedly connected with the frame 1, and the external hydraulic rod is controlled by the control system through network connection;
b. the number of the cake discharging vehicles 2 is two, the two cake discharging vehicles 2 are respectively positioned at two sides of the frame 1, the cake discharging vehicles 2 are connected with an external control system through a network, and when the control system receives and separates the filter frames 3;
c. the surface of the filter frame 3 at the two ends of the frame 1, which is far away from the filter frame 3 in the middle of the frame 1, is designed into a plane, and the convex elastic sheet 31 and the concave elastic sheet 33 on the filter frame 3 are made of the same material, such as steel material; the outer surfaces of the male elastic piece 31 and the female elastic piece 33 are coated with PTFE materials;
d. the air passage 35 is positioned in the filter frame 3, the cross section of the air passage 35 is in a cross shape, two ends of the transverse part of the air passage 35 are respectively positioned on the outer surface of the filter frame 3 and covered by the convex elastic sheet 31 and the concave elastic sheet 33, and the other end of the air passage 35 is positioned on the outer side of the filter frame 3;
e. the outer surface of the filter frame 3 is fixedly provided with a filter cloth 37, and the filter cloth 37 is made of a high-elasticity rubber film.
During operation, magnesium hydroxide slurry is injected into gaps between the filter frames 3 through an external pipeline, then an external hydraulic rod is started, the hydraulic rod drives an extrusion plate to move towards the direction of the filter frames 3, the extrusion plate pushes the filter frames 3 to be mutually combined, the magnesium hydroxide slurry between the filter frames 3 is subjected to filter pressing, and after the magnesium hydroxide slurry between the filter frames 3 is subjected to filter pressing, the magnesium hydroxide slurry is in a powder cake shape; starting a cake unloading vehicle 2 to disassemble and separate a filter frame 3, welding fixed blocks on two sides of the filter frame 3, rotatably installing a rotating block in the cake unloading vehicle 2, hinging an electric push rod on the lower surface of the rotating block, fixedly connecting one end of the electric push rod far away from the rotating block with the cake unloading vehicle 2 (the structure of the cake unloading vehicle 2 is shown in figure 3), jacking the electric push rod to enable one end of the cake unloading vehicle 2 to be in contact with the side surface of the fixed block after the rotating block on the cake unloading vehicle 2 moves below the fixed block, and then backing the rotating block by the cake unloading vehicle 2 to drive the filter frame 3 to move towards the end part of a frame 1, so that the filter frame 3 is separated, and then grinding the dropped cake to obtain magnesium hydroxide powder after the cake is dropped along with the movement of the cake unloading vehicle 2;
in the process that the extrusion plate pushes the filter frames 3 to extrude each other, the groove 32 on the filter frame 3 is firstly contacted with the convex spring piece 31 on the other filter frame 3, as the radian of the groove 32 is smaller than that of the convex spring piece 31, the convex spring piece 31 is deformed in the process that the groove 32 and the convex spring piece 31 extrude each other, meanwhile, the concave spring piece 33 in the groove 32 is contacted with the magnetic block 34 on the surface of the convex spring piece 31 on the other filter frame 3, and the convex spring piece 31 is deformed under the action force of mutual extrusion along with the gradual reduction of the distance between the filter frames 3, namely, the convex spring piece 31 is sunken towards the center, and the magnetic block 34 is magnetically connected with the concave spring piece 33; after the press filtration is completed, the hydraulic rod drives the extrusion plate to retreat, the cake unloading vehicle 2 separates the filter frame 3, the convex elastic sheet 31 is restored in the process of separating the filter frame 3, and due to the elastic potential energy of the convex elastic sheet 31, a certain impact is caused on the filter cloth 37 on the outer surface of the filter frame 3, so that the cake adhered to the filter cloth 37 is sprung off, and the condition that the subsequent manual work needs to clean the cake adhered to the filter cloth 37 again is reduced;
if the cake is adhered to the groove 32 part on the filter frame 3, in the process of separating the filter frame 3 by the cake unloading vehicle 2, as the magnetic block 34 is attracted to the concave elastic piece 33, in the process of separating the filter frame 3, the magnetic block 34 drives the concave elastic piece 33 to deform, namely, the concave elastic piece 33 protrudes towards the convex elastic piece 31, and as the concave elastic pieces 33 mutually separate between the filter frames 3 are restored to the original shape, the concave elastic piece 33 causes a certain impact to the filter cloth 37 on the outer surface of the filter frame 3 in the process of protruding and restoring the original shape, so that the cake adhered to the filter cloth 37 is sprung off, and the condition that the cake adhered to the filter cloth 37 needs to be cleaned again by subsequent manual work is reduced;
in the process of deforming and recovering the male elastic piece 31 and the female elastic piece 33, the air channel 35 absorbs and discharges external air, so that the situation that the male elastic piece 31 and the female elastic piece 33 cannot deform or recover due to the influence of negative pressure is avoided.
As another embodiment of the present invention, as shown in fig. 1, 5 and 6, the opening and closing mechanism 4 includes:
the fixing frame 41 is fixedly arranged on the frame 1, and movable blocks 42 which are uniformly distributed are slidably arranged on the fixing frame 41; the two ends of the movable block 42 are movably provided with a rotary block 43, one end of the rotary block 43, which is close to the movable block 42, is provided with a movable groove 44, and the other end of the rotary block 43 is rotatably connected with the outer side of the filter frame 3.
An air pipe 45 is arranged on one surface of the rotating block 43, which is close to the movable block 42, and evenly distributed spray heads 46 are fixedly arranged on the outer wall of the air pipe 45.
The two ends of the air pipe 45 are fixedly provided with mounting blocks 47, the outer surface of the rotating block 43 is provided with an adjusting groove 48, and the rotating block 43 is fixedly connected with the mounting blocks 47 through bolts.
Wherein:
a. the top view of the fixing frame 41 is in a II shape, the movable block 42 is slidably arranged on the vertical part of the fixing frame 41, and the vertical part of the fixing frame 41 limits the movable block 42;
b. two rotating blocks 43 are rotatably arranged at two ends of the movable block 42, the specifications and the sizes of the rotating blocks 43 on the movable block 42 are the same, and one ends of the two rotating blocks 43 far away from the movable block 42 are respectively and rotatably connected with the side surfaces of two different filter frames 3;
c. the nozzles 46 on the air pipe 45 are arranged in two groups, and one group of nozzles 46 faces the filter frame 3; the other group of spray heads 46 face the other air pipe 45, and the opposite spray heads 46 on the two air pipes 45 are distributed in a staggered way, so that the occurrence of mutual interference among the spray heads 46 is reduced;
d. the outer surface of the rotating block 43 is rotationally connected with a hose which is communicated with an air pipe 45 and is connected with an external air source or a water pump; the hose and the air pipe 45 are made of plastic materials, such as rubber;
e. the aperture of the end of the nozzle 46 close to the air pipe 45 is larger than that of the end of the nozzle 46 far away from the air pipe 45, the section of the nozzle 46 is horn-shaped, and the nozzle 46 compresses gas or water flow.
When the filter frame is in operation, the convex elastic sheet 31 and the groove 32 on the filter frame 3 are not contacted with each other, so that after the filter frame 3 is separated by the cake unloading vehicle 2, a certain possibility that a magnesium hydroxide powder cake is adhered to a transition region between the convex elastic sheet 31 and the groove 32 exists, the convex elastic sheet 31 and the concave elastic sheet 33 cannot be sprung off, and further, the filter frame is required to be cleaned again manually;
in the process of separating the filter frame 3 by the cake unloading vehicle 2, the filter frame 3 drives the rotating block 43 to rotate, and along with the continuous movement of the filter frame 3, one end of the rotating block 43, which is far away from the filter frame 3, pulls the movable block 42 to slide on the fixed frame 41, so that the dislocation of the filter frame 3 in the process of running on the frame 1 is reduced under the cooperation of the movable block 42 and the rotating block 43; the movable block 42 drives the rotary block 43 on the other filter frame 3 to rotate, and after a gap between the two filter frames 3 reaches a certain distance, the spray head 46 on the rotary block 43 sprays the opposite surfaces of the two filter frames 3, so that the powder cake adhered on the filter cloth 37 is cleaned, at the moment, a hose is connected with an external air source, and the condition that the powder cake adhered on the filter cloth 37 needs to be cleaned again by subsequent manual work is reduced; because the powder cake is in a block shape, the gas cannot be scattered everywhere in the process of impacting the powder cake;
after the gap between the two filter frames 3 reaches a certain distance, the rotating blocks 43 are combined to form a triangle, and at the moment, two groups of spray heads 46 on the air pipe 45 respectively clean the magnesium hydroxide powder cakes adhered on the two filter frames 3; meanwhile, the spray heads 46 have a certain angle when cleaning the filter frames 3, so that a part of areas on the filter frames 3 cannot be cleaned, two groups of spray heads 46 are arranged on one air pipe 45, and the two groups of spray heads 46 respectively clean different filter frames 3; so that the cleaning of the filter frame 3 by the spray head 46 is more comprehensive;
the spray angle of the spray head 46 is adjustable, the mounting block 47 and the rotating block 43 are connected together by bolts, the bolts are not screwed at the moment, then the angle of the spray head 46 is manually adjusted, the air pipe 45 and the rotating block 43 are fixedly connected together by screwing the bolts, and the cleanliness of the spray head 46 to the filter frame 3 is improved by adjusting the spray angle of the spray head 46;
after the filter frame 3 is used for a period of time, the filter cloth 37 on the filter frame 3 needs to be cleaned, at the moment, the hose is connected with the water pump, and water flow is sprayed out from the spray head 46 to clean the filter cloth 37.
The specific working mode is as follows:
implementing the following steps:
injecting magnesium hydroxide slurry into gaps between the filter frames 3 through an external pipeline, then starting an external hydraulic rod, driving an extrusion plate to move towards the direction of the filter frames 3 by the hydraulic rod, pushing the filter frames 3 to be mutually combined by the extrusion plate, and performing filter pressing on the magnesium hydroxide slurry between the filter frames 3, wherein the magnesium hydroxide slurry is in a powder cake shape after the filter pressing is completed on the magnesium hydroxide slurry between the filter frames 3; starting a cake unloading vehicle 2 to disassemble and separate the filter frames 3, enabling the powder cakes between the filter frames 3 to fall along with the movement of the cake unloading vehicle 2, and grinding the fallen powder cakes to obtain magnesium hydroxide powder;
in the process that the extrusion plates push the filter frames 3 to extrude each other, the grooves 32 on the filter frames 3 are firstly contacted with the magnetic blocks 34 on the surfaces of the convex elastic pieces 31 on the other filter frames 3, and the convex elastic pieces 31 deform under the action force of extrusion each other along with the gradual decrease of the distance between the filter frames 3, namely, the convex elastic pieces 31 are sunken towards the center, and the magnetic blocks 34 are magnetically connected with the concave elastic pieces 33; after the press filtration is completed, the hydraulic rod drives the extrusion plate to retreat, the cake unloading vehicle 2 separates the filter frame 3, the convex elastic sheet 31 is restored to the original state in the process of separating the filter frame 3, and a certain impact is caused to the filter cloth 37 on the outer surface of the filter frame 3 due to the elastic potential energy of the convex elastic sheet 31, so that the cake adhered to the filter cloth 37 is sprung off;
if the cake is adhered to the groove 32 on the filter frame 3, in the process of separating the filter frame 3 by the cake unloading vehicle 2, the magnetic block 34 and the concave elastic piece 33 are attracted, in the process of separating the filter frame 3, the magnetic block 34 drives the concave elastic piece 33 to deform, namely, the concave elastic piece 33 protrudes towards the direction of the convex elastic piece 31, and as the concave elastic pieces 33 mutually separate between the filter frames 3 are restored to the original state, the concave elastic piece 33 causes a certain impact to the filter cloth 37 on the outer surface of the filter frame 3 in the process of protruding and restoring the original state, so that the cake adhered to the filter cloth 37 is sprung.
As another embodiment of the present invention, since the convex spring plate 31 and the groove 32 on the filter frame 3 are not contacted with each other, after the cake unloading vehicle 2 separates the filter frame 3, the magnesium hydroxide powder cake has a certain possibility of adhering to the transition area between the convex spring plate 31 and the groove 32, so that the convex spring plate 31 and the concave spring plate 33 cannot spring off, and further need to be cleaned again manually;
in the process of separating the filter frame 3 by the cake unloading vehicle 2, the filter frame 3 drives the rotating block 43 to rotate, and along with the continuous movement of the filter frame 3, one end of the rotating block 43, which is far away from the filter frame 3, pulls the movable block 42 to slide on the fixed frame 41; the movable block 42 drives the rotary block 43 on the other filter frame 3 to rotate, and after a gap between the two filter frames 3 reaches a certain distance, a spray head 46 on the rotary block 43 sprays the opposite surfaces of the two filter frames 3, so that powder cakes adhered on the filter cloth 37 are cleaned; because the powder cake is in a block shape, the gas cannot be scattered everywhere in the process of impacting the powder cake;
after the gap between the two filter frames 3 reaches a certain distance, the rotating blocks 43 are combined to form a triangle, and at the moment, two groups of spray heads 46 on the air pipe 45 respectively clean the magnesium hydroxide powder cakes adhered on the two filter frames 3; meanwhile, the spray heads 46 have a certain angle when cleaning the filter frames 3, so that a part of areas on the filter frames 3 cannot be cleaned, two groups of spray heads 46 are arranged on one air pipe 45, and the two groups of spray heads 46 respectively clean different filter frames 3;
the spray angle of the spray head 46 is adjustable, the mounting block 47 and the rotating block 43 are connected together by bolts, the bolts are not screwed at the moment, then the angle of the spray head 46 is manually adjusted, and then the bolts are screwed to enable the air pipe 45 and the rotating block 43 to be fixedly connected together;
after the filter frame 3 is used for a period of time, the filter cloth 37 on the filter frame 3 needs to be cleaned, at the moment, the hose is connected with the water pump, and water flow is sprayed out from the spray head 46 to clean the filter cloth 37.
The orientation and positional relationship indicated in the description of the present invention are based on the orientation or positional relationship shown in the drawings of the present invention, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention.
Claims (2)
1. A system for preparing high purity fire retardant magnesium hydroxide, comprising:
a frame (1), the frame (1) having a rigid mounting carrier function;
the cake unloading vehicle (2) is arranged on the frame (1) in a sliding manner;
the cake discharging vehicle (2) is controlled by the control system through network connection;
the method is characterized in that:
the filter frame (3), the filter frame (3) which is uniformly distributed is movably arranged on the frame (1), and the filter cloth (37) is fixedly arranged on the outer surface of the filter frame (3);
the outer surface of the filter frame (3) is fixedly provided with the convex elastic sheet (31);
the outer surface of the filter frame (3) is provided with grooves (32), the grooves (32) on the same filter frame (3) are not contacted with the convex elastic pieces (31), and the radian of the grooves (32) is smaller than that of the convex elastic pieces (31);
the opening and closing mechanism (4) is arranged on the frame (1), and the opening and closing mechanism (4) is used for stabilizing the operation of the filter frame (3);
the edge of the groove (32) is fixedly provided with a concave elastic sheet (33), one side of the convex elastic sheet (31) far away from the filter frame (3) is fixedly provided with a magnetic block (34), and the concave elastic sheet (33) is made of ferromagnetic materials;
the outer surface of the filter frame (3) is provided with two groups of convex elastic pieces (31) and concave elastic pieces (33), and the convex elastic pieces (31) and the concave elastic pieces (33) are distributed in a staggered mode;
an air passage (35) is formed in the filter frame (3);
the filter cloth (37) is made of a high-elasticity rubber film;
the opening and closing mechanism (4) includes: the fixing frame (41) is fixedly arranged on the frame (1), and the fixing frame (41) with a rigid carrier mounting function is fixedly arranged on the frame;
the movable blocks (42) are arranged on the fixed frame (41) in a sliding manner, and the movable blocks (42) are uniformly distributed;
the filter comprises a movable block (42), wherein the two ends of the movable block (42) are movably provided with the movable block (43), one end, close to the movable block (42), of the movable block (43) is provided with a movable groove (44), and the other end of the movable block (43) is rotatably connected with the outer side of the filter frame (3);
an air pipe (45) is arranged on one surface of the rotating block (43) close to the movable block (42), and evenly distributed spray heads (46) are fixedly arranged on the outer wall of the air pipe (45);
mounting blocks (47) are fixedly mounted at two ends of the air pipe (45), an adjusting groove (48) is formed in the outer surface of the rotating block (43), and the rotating block (43) is fixedly connected with the mounting blocks (47) through bolts;
the spray heads (46) on the air pipes (45) are arranged in two groups, one group of spray heads (46) faces the filter frame (3), the other group of spray heads (46) faces the other air pipe (45), and the spray heads (46) opposite to the air pipes (45) are distributed in a staggered mode.
2. The system for preparing high purity fire retardant magnesium hydroxide according to claim 1, wherein: the aperture of the end, close to the air pipe (45), of the spray head (46) is larger than the aperture of the end, far away from the air pipe (45), of the spray head (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210871200.9A CN115253407B (en) | 2022-07-22 | 2022-07-22 | Preparation system of high-purity fire retardant magnesium hydroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210871200.9A CN115253407B (en) | 2022-07-22 | 2022-07-22 | Preparation system of high-purity fire retardant magnesium hydroxide |
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| Publication Number | Publication Date |
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| CN115253407A CN115253407A (en) | 2022-11-01 |
| CN115253407B true CN115253407B (en) | 2024-04-16 |
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| CN202210871200.9A Active CN115253407B (en) | 2022-07-22 | 2022-07-22 | Preparation system of high-purity fire retardant magnesium hydroxide |
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| US3807567A (en) * | 1972-03-06 | 1974-04-30 | Ishigaki Mech Ind | Filter press |
| CN101024129A (en) * | 2006-02-17 | 2007-08-29 | 金基台 | Filter media cleaner for filter press |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115253407A (en) | 2022-11-01 |
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Effective date of registration: 20231218 Address after: No. 1909, 4th Floor, Xiaoyue Sili, Fengtai District, Beijing, 100071 Applicant after: Mu Hailong Applicant after: Mu Ruoxin Address before: 250000 room 503, building 7, yongxingyuan, Aishan street, Gangcheng District, Jinan City, Shandong Province Applicant before: Zhang Jing |
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