CN115253407A - Preparation system of high-purity flame retardant magnesium hydroxide - Google Patents
Preparation system of high-purity flame retardant magnesium hydroxide Download PDFInfo
- Publication number
- CN115253407A CN115253407A CN202210871200.9A CN202210871200A CN115253407A CN 115253407 A CN115253407 A CN 115253407A CN 202210871200 A CN202210871200 A CN 202210871200A CN 115253407 A CN115253407 A CN 115253407A
- Authority
- CN
- China
- Prior art keywords
- filter
- filter frame
- frame
- magnesium hydroxide
- flame retardant
- Prior art date
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 title claims abstract description 53
- 239000000347 magnesium hydroxide Substances 0.000 title claims abstract description 53
- 229910001862 magnesium hydroxide Inorganic materials 0.000 title claims abstract description 53
- 239000003063 flame retardant Substances 0.000 title claims abstract description 25
- 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 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 21
- 230000005291 magnetic effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 6
- 210000003437 trachea Anatomy 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 20
- 238000003825 pressing Methods 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 22
- 230000008569 process Effects 0.000 description 17
- 238000001125 extrusion Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000007788 liquid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011084 recovery Methods 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
- 238000000227 grinding Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 229960002337 magnesium chloride Drugs 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 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
- 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
- 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
- 239000012528 membrane Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000012856 packing Methods 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
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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)
- Filtration Of Liquid (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the field of chemical preparation, and particularly relates to a preparation system of a high-purity flame retardant magnesium hydroxide, which comprises a rack, wherein the rack has a function of rigidly mounting a carrier; the cake unloading vehicle is arranged on the rack in a sliding manner; the cake unloading vehicle is controlled by a control system through network connection; the filter frame is movably arranged on the frame and is uniformly distributed, and filter cloth is fixedly arranged on the outer surface of the filter frame; the outer surface of the filter frame is fixedly provided with a convex elastic sheet; grooves are formed in the outer surface of the filter frame, and the grooves in the same filter frame are not in contact with the convex elastic sheets; 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 a part of magnesium hydroxide slurry is adhered to the filter cloth on the surface of the filter frame after filter pressing is finished due to overlarge viscosity of the magnesium hydroxide slurry.
Description
Technical Field
The invention belongs to the field of chemical preparation, and particularly relates to a preparation system of a 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;
the preparation method of the magnesium hydroxide fire retardant mainly comprises the steps of respectively placing a magnesium chloride solution and a sodium hydroxide solution into different liquid storage 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 stirring device to be 60 ℃, enabling two strands of raw material liquid to enter a liquid inlet pipe through a corrosion-resistant pump at a volume flow of 40L/h, enabling the two strands of raw material liquid to oppositely impact at an initial speed of 8.47m/s at a nozzle of the liquid inlet pipe to form a fan-shaped liquid level, enabling the impacted solution to enter annular packing rotating at a rotating speed of 55.31 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 the filter frames is too high, after the plate-and-frame filter press finishes filter pressing of the magnesium hydroxide slurry, the filter frames on the plate-and-frame filter press are separated by the cake unloading vehicle, and a part of the magnesium hydroxide slurry after filter pressing is adhered to the filter cloth on the surface 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 perform filter pressing can be caused in serious cases; therefore, the magnesium hydroxide adhered to the filter cloth after filter pressing needs to be cleaned by follow-up manual work, and the method is time-consuming and labor-consuming.
In view of this, the invention provides a preparation system of high-purity flame retardant magnesium hydroxide, which solves the 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 following problems: the viscosity of the magnesium hydroxide slurry is too high, so that a part of the magnesium hydroxide slurry is adhered to the filter cloth on the surface of the filter frame after filter pressing is finished;
in order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a preparation system of high-purity flame retardant magnesium hydroxide, which comprises the following components:
a frame having a rigid mount carrier function;
the cake discharging vehicle is arranged on the frame in a sliding manner;
the cake unloading vehicle is controlled by the control system through network connection;
the filter frame is movably arranged on the rack and is uniformly distributed, and filter cloth is fixedly arranged on the outer surface of the filter frame;
the convex elastic sheet is fixedly arranged on the outer surface of the filter frame;
the outer surface of the filter frame is provided with a groove, and the groove on the same filter frame is not in contact 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, a concave elastic sheet is fixedly installed at the edge of the groove, a magnetic block is fixedly installed on one side, away from the filter frame, of the convex elastic sheet, and the concave elastic sheet is made of a ferromagnetic material.
Preferably, the outer surface of the filter frame is provided with two groups of convex elastic pieces and concave elastic pieces, and the convex elastic pieces and the concave elastic pieces are distributed in a staggered manner.
Preferably, an air passage is formed in the filter frame.
Preferably, the filter cloth is made of a high-elasticity rubber membrane.
Preferably, the opening and closing mechanism includes:
the fixing frame with the function of rigidly mounting the carrier is fixedly mounted on the rack;
the movable blocks are arranged on the fixed frame in a sliding way and are uniformly distributed;
the filter frame comprises a rotating block, wherein the two ends of the moving block are movably provided with the rotating block, the rotating block is close to one end of the moving block, a moving groove is formed in the other end of the rotating block, and the other end of the rotating block is rotatably connected with the outer side of the filter frame.
Preferably, an air pipe is installed on one side, close to the movable block, of the rotating block, and uniformly distributed spray heads are fixedly installed on the outer wall of the air pipe.
Preferably, the installation blocks are fixedly installed at the two ends of the air pipe, the adjusting grooves are formed in the outer surface of the rotating block, and the rotating block is fixedly connected with the installation blocks through bolts.
Preferably, the aperture of the end of the spray head close to the air pipe is larger than the aperture of the end of the spray head far away from the air pipe.
Preferably, the nozzles on the air pipes are arranged into two groups, one group of nozzles faces the filter frame, the other group of nozzles faces the other air pipe, and the opposite nozzles on the two air pipes are distributed in a staggered manner.
The invention has the following beneficial effects:
1. according to the preparation system of the high-purity flame retardant magnesium hydroxide, the hydraulic rod drives the extrusion plate to retreat after filter pressing is completed, the filter frame is separated by the cake unloading vehicle, the convex elastic sheet is restored to the original state in the separation process of the filter frame, certain impact is caused to the filter cloth on the outer surface of the filter frame due to the elastic potential energy of the convex elastic sheet, the cake adhered to the filter cloth is bounced off, and the condition that the cake adhered to the filter cloth needs to be cleaned again in follow-up manual work is reduced.
2. According to the preparation system of the high-purity flame retardant magnesium hydroxide, in the process of separating the filter frames by the cake unloading vehicle, the filter frames drive the rotating blocks to rotate and drive the movable block to slide on the fixed frame, the movable block drives the rotating block on the other filter frame to rotate, and after a gap between the two filter frames reaches a certain distance, the nozzle on the rotating block sprays the opposite surfaces of the two filter frames, so that powder cakes adhered to the filter cloth are cleaned, at the moment, the hose is connected with an external air source, and the condition that the powder cakes adhered to the filter cloth need to be cleaned again by follow-up manual work is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a main body structure view 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 cake discharge cart 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 frame; 2. unloading the cake car; 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. filtering cloth; 4. an opening and closing mechanism; 41. a fixed mount; 42. a movable block; 43. rotating the block; 44. a movable groove; 45. an air tube; 46. a spray head; 47. mounting blocks; 48. and adjusting the groove.
Detailed Description
In order to make the objects, technical means and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation system of high-purity flame retardant magnesium hydroxide, which solves the following problems: the viscosity of the magnesium hydroxide slurry is too high, so that a part of the magnesium hydroxide slurry is adhered to the filter cloth on the surface of the filter frame after filter pressing is finished;
in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: by arranging the convex elastic pieces and the concave elastic pieces, certain impact is caused to the filter cloth on the outer surface of the filter frame by the convex elastic pieces and the concave elastic pieces in the deformation and recovery processes, so that the pressed powder adhered to the filter cloth is bounced off, and the condition that the pressed powder adhered to the filter cloth needs to be cleaned again by follow-up labor 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 to the two filter frames, so that the situation that the powder cakes adhered to the filter cloth need to be cleaned again by follow-up labor is reduced;
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Implementing one step:
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 mounted on the frame 1; the filter frames 3 which are uniformly distributed are movably arranged on the frame 1; 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 elastic sheet 31;
the frame 1 is provided with an opening and closing mechanism 4, and the opening and closing mechanism 4 is used for stabilizing the operation of the filter frame 3;
a concave elastic sheet 33 is fixedly arranged at the edge of the groove 32, and a magnetic block 34 is fixedly arranged on one side of the convex elastic sheet 31 far away from the filter frame 3;
an air passage 35 is formed in the filter frame 3;
wherein:
a. an extrusion plate is movably mounted in the rack 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 rack 1, and the external hydraulic rod is connected with a control system through a network for control;
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 surfaces of the filter frames 3 at the two ends of the frame 1, which are far away from the filter frame 3 in the middle of the frame 1, are designed to be flat surfaces, and the convex elastic sheets 31 and the concave elastic sheets 33 on the filter frames 3 are made of the same material, such as steel material; the outer surfaces of the convex elastic sheet 31 and the concave elastic sheet 33 are coated with PTFE materials;
d. the air passage 35 is positioned inside 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 are 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 surfaces of the filter frames 3 are all fixedly provided with 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 among the filter frames 3 through an external pipeline, then an external hydraulic rod is started, the hydraulic rod drives the extrusion plates to move towards the filter frames 3, the extrusion plates push the filter frames 3 to be mutually combined, the magnesium hydroxide slurry among the filter frames 3 is subjected to filter pressing, and after the magnesium hydroxide slurry among the filter frames 3 is subjected to filter pressing, the magnesium hydroxide slurry is in a powder cake shape; the cake unloading vehicle 2 is started to disassemble and separate the filter frames 3, fixed blocks are welded on two sides of each filter frame 3, a rotating block is rotatably mounted in each cake unloading vehicle 2, the lower surface of each rotating block is hinged with an electric push rod, one end, far away from each rotating block, of each electric push rod is fixedly connected with each cake unloading vehicle 2 (the structure of each cake unloading vehicle 2 is shown in figure 3), when the rotating block on each cake unloading vehicle 2 moves below the corresponding fixed block, each electric push rod jacks up to enable one end of each rotating block of each cake unloading vehicle 2 to be in contact with the side surface of the corresponding fixed block, and then each cake unloading vehicle 2 retreats to enable the corresponding filter frame 3 to move towards the end of the corresponding rack 1, so that the filter frames 3 are separated, cakes between the filter frames 3 fall along with the movement of the corresponding cake unloading vehicles 2, and the fallen cakes are ground to obtain magnesium hydroxide powder;
in the process that the filter frames 3 are pushed to be mutually extruded by the extrusion plate, the groove 32 on one filter frame 3 is firstly contacted with the convex elastic sheet 31 on the other filter frame 3, because the radian of the groove 32 is smaller than that of the convex elastic sheet 31, the convex elastic sheet 31 is deformed in the process that the groove 32 and the convex elastic sheet 31 are mutually extruded, meanwhile, the concave elastic sheet 33 in the groove 32 is contacted with the magnetic block 34 on the surface of the convex elastic sheet 31 on the other filter frame 3, the convex elastic sheet 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 elastic sheet 31 is sunken towards the center, and the magnetic block 34 is magnetically connected with the concave elastic sheet 33; after filter pressing is completed, the hydraulic rod drives the extrusion plate to retreat, the filter frame 3 is separated by the cake unloading vehicle 2, the convex elastic piece 31 is restored to the original state in the separation process of the filter frame 3, and 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 piece 31, so that the cake adhered to the filter cloth 37 is bounced off, and the condition that the cake adhered to the filter cloth 37 needs to be cleaned again by follow-up manual work 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, because the magnetic block 34 is attracted to the concave elastic sheet 33, in the process of separating the filter frame 3, the magnetic block 34 drives the concave elastic sheet 33 to deform, namely, the concave elastic sheet 33 protrudes towards the convex elastic sheet 31, the concave elastic sheet 33 recovers along with the mutual separation between the filter frames 3, the concave elastic sheet 33 impacts the filter cloth 37 on the outer surface of the filter frame 3 to a certain extent in the process of protruding and recovering, and then the cake adhered to the filter cloth 37 is bounced off, so that the condition that the cake adhered to the filter cloth 37 needs to be cleaned again by follow-up manual work is reduced;
in the process that the convex elastic sheet 31 and the concave elastic sheet 33 are deformed and restored to the original state, the air passage 35 absorbs and discharges external air, and the convex elastic sheet 31 and the concave elastic sheet 33 cannot be deformed or restored to the original state due to the influence of negative pressure.
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 installed on the rack 1, and the fixing frame 41 is provided with movable blocks 42 which are uniformly distributed in a sliding manner; the equal movable mounting in both ends of movable block 42 has a turning block 43, turning block 43 is close to movable block 42's one end has seted up movable groove 44, the other end of turning block 43 with the outside of straining frame 3 is rotated and is connected.
An air pipe 45 is installed on one surface of the rotating block 43 close to the movable block 42, and spray heads 46 which are uniformly distributed are fixedly installed on the outer wall of the air pipe 45.
The both ends of trachea 45 all fixed mounting have installation piece 47, adjustment tank 48 has been seted up to the surface of turning block 43, turning block 43 with installation piece 47 passes through bolt fixed connection.
Wherein:
a. the top view of the fixed frame 41 is in a 'II' shape, the movable block 42 is slidably mounted on the vertical part of the fixed frame 41, and the vertical part of the fixed frame 41 limits the movable block 42;
b. two rotating blocks 43 are rotatably mounted 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. two groups of spray heads 46 are arranged on the air pipe 45, and one group of spray heads 46 face 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 manner, so that the mutual interference between the spray heads 46 is reduced;
d. the outer surface of the rotating block 43 is rotatably 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 gas pipe 45 is larger than the aperture of the end of the nozzle 46 far from the gas pipe 45, the cross section of the nozzle 46 is trumpet-shaped, and the nozzle 46 compresses gas or water flow.
When the filter frame is in work, the convex elastic sheet 31 on the filter frame 3 is not in contact with the groove 32, so that after the filter frame 3 is separated by the cake unloading vehicle 2, the magnesium hydroxide cake is possibly adhered to a transition area between the convex elastic sheet 31 and the groove 32 to a certain extent, and the convex elastic sheet 31 and the concave elastic sheet 33 cannot be bounced off, so that the filter frame needs to be cleaned again manually;
in the process that the cake unloading vehicle 2 separates the filter frame 3, the filter frame 3 drives the rotating block 43 to rotate, 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, and the dislocation of the filter frame 3 in the process of running on the rack 1 is reduced under the matching of the movable block 42 and the rotating block 43; the movable block 42 drives the rotating block 43 on the other filter frame 3 to rotate, after a gap between the two filter frames 3 reaches a certain distance, the nozzle 46 on the rotating block 43 sprays the opposite surface of the two filter frames 3, so that the powder cake adhered to the filter cloth 37 is cleaned, at the moment, the hose is connected with an external air source, and the condition that the powder cake adhered to the filter cloth 37 needs to be cleaned again by subsequent labor is reduced; because the powder cake is in a block shape, the gas can not be scattered all around in the process of impacting the powder cake;
after the gap between the two filter frames 3 reaches a certain distance, the shape formed by combining the rotating blocks 43 is triangular, and at the moment, two groups of nozzles 46 on the air pipe 45 respectively clean the magnesium hydroxide powder cakes adhered to the two filter frames 3; meanwhile, the nozzles 46 have a certain angle when cleaning the filter frame 3, so that a part of the area on the filter frame 3 cannot be cleaned, two groups of nozzles 46 are arranged on one air pipe 45, and the two groups of nozzles 46 respectively clean different filter frames 3; thereby leading the cleaning of the filter frame 3 by the spray head 46 to be 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 using a bolt, the bolt is not screwed at the moment, then the angle of the spray head 46 is manually adjusted, then the bolt is screwed so that the air pipe 45 and the rotating block 43 are fixedly connected together, 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 a 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 one step:
injecting magnesium hydroxide slurry into gaps among the filter frames 3 through an external pipeline, then starting an external hydraulic rod, driving the extrusion plates to move towards the filter frames 3 by the hydraulic rod, pushing the filter frames 3 to be mutually combined by the extrusion plates, and performing filter pressing on the magnesium hydroxide slurry among the filter frames 3, wherein the magnesium hydroxide slurry among the filter frames 3 is in a powder cake shape after the filter pressing of the magnesium hydroxide slurry is completed; starting the cake unloading vehicle 2 to disassemble and separate the filter frames 3, dropping off the powder cakes between the filter frames 3 along with the movement of the cake unloading vehicle 2, and grinding the dropped powder cakes to obtain magnesium hydroxide powder;
in the process that the squeezing plates push the filter frames 3 to squeeze each other, the grooves 32 on one filter frame 3 are firstly contacted with the magnetic blocks 34 on the surfaces of the convex elastic pieces 31 on the other filter frame 3, and the convex elastic pieces 31 deform under the mutual squeezing action force along with the gradual reduction 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 filter pressing is completed, the hydraulic rod drives the extrusion plate to retreat, the filter frame 3 is separated by the cake unloading vehicle 2, the convex elastic sheet 31 is restored to the original state in the separation process of the filter frame 3, and due to the elastic potential energy of the convex elastic sheet 31, certain impact is caused on the filter cloth 37 on the outer surface of the filter frame 3, and then the cake adhered to the filter cloth 37 is bounced off;
if the cake adheres to the groove 32 on the filter frame 3, in the process of separating the filter frame 3 by the cake unloading vehicle 2, because the magnetic block 34 is attracted to the concave elastic sheet 33, in the process of separating the filter frame 3, the magnetic block 34 drives the concave elastic sheet 33 to deform, namely, the concave elastic sheet 33 protrudes towards the convex elastic sheet 31, and along with the mutual separation between the filter frames 3 and the recovery of the concave elastic sheet 33, the concave elastic sheet 33 impacts the filter cloth 37 on the outer surface of the filter frame 3 to a certain extent in the process of protruding and recovery, so that the cake adhered to the filter cloth 37 falls off.
As another embodiment of the invention, 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, the magnesium hydroxide cake has a certain possibility of being adhered to a transition area between the convex elastic sheet 31 and the groove 32, so that the convex elastic sheet 31 and the concave elastic sheet 33 cannot be bounced off, and further manual cleaning is needed;
in the process that the cake unloading vehicle 2 separates the filter frame 3, 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 rotating 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 nozzle 46 on the rotating block 43 sprays the opposite surface of the two filter frames 3, so that the powder cake adhered to the filter cloth 37 is cleaned; because the powder cake is in a block shape, the gas can not be scattered all around in the process of impacting the powder cake;
after the gap between the two filter frames 3 reaches a certain distance, the shape formed by the combination of the rotating blocks 43 is triangular, and at the moment, two groups of spray heads 46 on the air pipe 45 respectively clean the magnesium hydroxide powder cakes adhered to the two filter frames 3; meanwhile, the nozzles 46 have a certain angle when cleaning the filter frame 3, so that a part of the area on the filter frame 3 cannot be cleaned, two groups of nozzles 46 are arranged on one air pipe 45, and the two groups of nozzles 46 respectively clean different filter frames 3;
the spraying angle of the spray head 46 is adjustable, the mounting block 47 and the rotating block 43 are connected together by bolts firstly, 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 so that the air pipe 45 and the rotating block 43 are 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 a water pump, and water flow is sprayed out from the spray head 46 to clean the filter cloth 37.
The orientations and positional relationships indicated in the description of the present invention are the orientations and positional relationships shown in the drawings based on the present invention, and are only for convenience of describing the present invention and for simplification of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.
Claims (10)
1. A preparation system of high-purity flame retardant magnesium hydroxide comprises:
the rack (1), the said rack (1) has function of installing the carrier rigidly;
the cake discharging vehicle (2) is arranged on the frame (1) in a sliding manner;
the cake unloading vehicle (2) is controlled by the control system through network connection;
the method is characterized in that:
the filter frame (3) is movably arranged on the frame (1) and is uniformly distributed, and filter cloth (37) is fixedly arranged on the outer surface of the filter frame (3);
the convex elastic sheet (31) is fixedly arranged on the outer surface of the filter frame (3);
the filter frame comprises grooves (32), the outer surface of the filter frame (3) is provided with the grooves (32), the grooves (32) on the same filter frame (3) are not in contact with the convex elastic sheets (31), and the radian of the grooves (32) is smaller than that of the convex elastic sheets (31);
the filter frame is characterized by comprising an opening and closing mechanism (4), wherein 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).
2. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 1, is characterized in that: 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.
3. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 2, is characterized in that: the outer surface of the filter frame (3) is provided with two groups of convex elastic sheets (31) and concave elastic sheets (33), and the convex elastic sheets (31) and the concave elastic sheets (33) are distributed in a staggered mode.
4. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 1, is characterized in that: an air passage (35) is formed in the filter frame (3).
5. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 1, is characterized in that: the filter cloth (37) is made of a high-elasticity rubber film.
6. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 1, is characterized in that: the opening and closing mechanism (4) comprises:
the fixing frame (41) with the function of rigidly mounting a carrier is fixedly mounted on the rack (1);
the movable blocks (42) are arranged on the fixed frame (41) in a sliding manner and are uniformly distributed;
the filter screen is characterized by comprising a rotating block (43), wherein the two ends of the moving block (42) are respectively movably provided with the rotating block (43), the rotating block (43) is close to one end of the moving block (42), a moving groove (44) is formed in one end of the moving block (42), and the other end of the rotating block (43) is rotatably connected with the outer side of the filter frame (3).
7. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 6, is characterized in that: an air pipe (45) is installed on one surface, close to the movable block (42), of the rotating block (43), and spray heads (46) which are uniformly distributed are fixedly installed on the outer wall of the air pipe (45).
8. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 6, characterized in that: the equal fixed mounting in both ends of trachea (45) has installation piece (47), adjustment tank (48) have been seted up to the surface of turning block (43), turning block (43) with installation piece (47) pass through bolt fixed connection.
9. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 7, characterized in that: the aperture of one end, close to the air pipe (45), of the spray head (46) is larger than that of one end, far away from the air pipe (45), of the spray head (46).
10. The system for preparing the high-purity flame retardant magnesium hydroxide according to claim 7, characterized in that: shower nozzle (46) on trachea (45) are established to two sets ofly, and one set of shower nozzle (46) orientation filter frame (3), another set shower nozzle (46) orientation another trachea (45), two relative on trachea (45) shower nozzle (46) crisscross distribution.
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| 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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| 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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| CN115253407A true CN115253407A (en) | 2022-11-01 |
| CN115253407B CN115253407B (en) | 2024-04-16 |
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| CN214415685U (en) * | 2020-12-10 | 2021-10-19 | 重庆鑫科混凝土有限公司 | Environment-friendly filter press |
| CN215085125U (en) * | 2020-12-24 | 2021-12-10 | 烟台瑞华食品有限公司 | Plate type filter press |
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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 |
| CN201482269U (en) * | 2009-08-14 | 2010-05-26 | 赵恩 | Horizontal press filter |
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| CN215085125U (en) * | 2020-12-24 | 2021-12-10 | 烟台瑞华食品有限公司 | Plate type filter press |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115253407B (en) | 2024-04-16 |
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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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