CN114308280B

CN114308280B - Preparation equipment of waterborne epoxy resin emulsion

Info

Publication number: CN114308280B
Application number: CN202111610620.3A
Authority: CN
Inventors: 张威; 刘艳; 朱小勇
Original assignee: Huangshan Liangu New Material Technology Co ltd
Current assignee: Huangshan Liangu New Material Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-11-22
Anticipated expiration: 2041-12-27
Also published as: CN114308280A

Abstract

The invention discloses a preparation device of water-based epoxy resin emulsion, which comprises a base, wherein an installation frame is fixed at the top of the base, a roller is movably installed in the top of the installation frame in an embedded manner, a transverse shaft is installed on a bearing in the roller, and a feeding hole is connected to the outer side of the roller; further comprising: the motor is fixed at the top of the mounting frame, the output end of the motor is connected with a gear, the upper side and the lower side of the gear are respectively meshed with a gear ring and a gear sleeve, the gear sleeves are fixedly sleeved at the end part of the roller, a mounting plate is fixed at one side of the gear ring, grinding balls are placed in the roller, and a screening net is arranged in the middle of the roller; the baffle ring is sleeved on the outer side of the middle of the roller, and the side of the material guide seat is communicated with a through hole. This preparation equipment of waterborne epoxy resin emulsion grinds epoxy into even micron order powder, and the convenience is stably dispersed in follow-up emulsion, and the ejection of compact of convenient automatic screening simultaneously prevents blockking up.

Description

Preparation equipment of waterborne epoxy resin emulsion

Technical Field

The invention relates to the technical field of waterborne epoxy resin emulsion, in particular to a preparation device of waterborne epoxy resin emulsion.

Background

The water-based epoxy resin emulsion is a coating with stable performance, is widely applied to building protection and automobile spraying protection, and needs to mix and form ground epoxy resin powder and an emulsifier aqueous solution in the preparation process of the water-based epoxy resin emulsion, but the existing epoxy resin grinding equipment has the following problems in use:

the existing epoxy resin grinding is mainly carried out by adopting equipment such as a ball mill and a colloid mill, but the grinding aiming at the epoxy resin is carried out, the obtained particle size is large, the prepared emulsion is poor in stability, the film forming property is poor, the micron-sized grinding is inconvenient to the epoxy resin, and meanwhile, when the epoxy resin is ground, the whole grinding is required to be finished, then the materials are uniformly taken, the grinding effect cannot be known, and the automatic discharging of finished products is inconvenient.

Aiming at the problems, innovative design is urgently needed on the basis of the original preparation equipment of the waterborne epoxy resin emulsion.

Disclosure of Invention

The invention aims to provide a preparation device of water-based epoxy resin emulsion, which aims to solve the problems that the existing preparation device of water-based epoxy resin emulsion in the background art is inconvenient to grind epoxy resin in micron order and is inconvenient for automatically discharging finished products.

In order to achieve the purpose, the invention provides the following technical scheme: the preparation equipment of the water-based epoxy resin emulsion comprises a base, wherein an installation frame is fixed at the top of the base, a roller is movably installed in the top of the installation frame in an embedded mode, a transverse shaft is installed on a bearing in the roller, and a feeding hole is connected to the outer side of the roller;

further comprising:

the motor is fixed at the top of the mounting frame, the output end of the motor is connected with a gear, the upper side and the lower side of the gear are respectively meshed with a gear ring and a gear sleeve, the gear sleeves are fixedly sleeved at the end part of the roller, a mounting plate is fixed at one side of the gear ring and fixedly sleeved at one end of a cross shaft, and one end of the cross shaft penetrates through the edge end of the roller, the middle part of the transverse shaft is provided with a helical blade, a grinding ball is placed in the roller, grinding grooves are formed in the outer side of the grinding ball, the inner wall of the roller and the outer side of the helical blade, the middle part of the roller is provided with a screening net, the side of the screening net is provided with a first magnetic block, and the first magnetic block is fixed in the roller in an embedded manner;

keep off the ring, keep off the middle part outside that the cylinder was located to the ring cover, and the bottom laminating of cylinder installs the guide seat to there is the second magnetic path through spring coupling in the cavity at guide seat top, and the avris of second magnetic path is fixed with the rack moreover, and rack movable mounting is on the inner wall of guide seat cavity simultaneously, the avris of guide seat link up and has seted up the opening, and embedded movable mounting has the ring gear in the opening to the ring gear is located one side of rack, installs fan blade assembly in the ring gear moreover, the top of base is fixed with the feeding seat, and the one end of feeding seat is connected with the opening.

Preferably, the inside of the roller is in a wave-shaped structural design, the grinding grooves on the inner wall of the roller are distributed obliquely at equal angles, the width of each grinding groove is 300 mu m, the diameter of the roller is gradually increased from outside to inside, the materials in the roller are conveniently in multidirectional contact with grinding balls, and meanwhile, the grinding fineness is improved through the grinding grooves.

Preferably, the screening net is distributed in the drum at equal angles, is positioned at a low point of a wavy structure of the drum, has a pore size of 400 microns and is convenient for real-time screening of materials through the screening net.

Preferably, the first magnetic blocks are symmetrically arranged on two sides of the screening net, the magnetism of the first magnetic blocks is repellent to that of the second magnetic blocks, the second magnetic blocks are externally sleeved with silica gel and are attached to the guide seat to slide elastically, and the first magnetic blocks move to the second magnetic blocks and can push the second magnetic blocks to slide downwards.

Preferably, keep off the ring and install with the middle part laminating of cylinder, and the width that keeps off the ring is greater than the width of screening net to the below that keeps off the ring is for opening column structure design and guide seat to cooperate, and the top of guide seat cooperates with the bottom laminating of cylinder moreover, and the cylinder is when rotating, shelters from the outside through keeping off the ring, makes the material can only drop from the screening net department of bottom.

Preferably, the limit groove is formed in the side of the rack, the tooth blocks are connected to the limit groove through torsion spring rotating shafts, the rack is vertically distributed in a T-shaped structure, and the tooth blocks can move up and down along with the rack and the second magnetic block.

Preferably, the tooth blocks are distributed on the rack at equal intervals, the tooth blocks rotate on the rack in a single direction through the limiting grooves, the tooth blocks are meshed with the gear ring, and the gear ring can be driven to rotate only in a single direction when the tooth blocks move up and down.

Preferably, the rack and the gear ring are symmetrically arranged in the material guide seat, the unidirectional rotation directions of the gear blocks on the two racks are opposite, the racks on the two sides are matched with the gear blocks, and the two gear rings can be driven to rotate along with the up-and-down movement of the second magnetic block.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention is provided with a superfine grinding structure, the rotation of a roller drives materials and large and small grinding balls to rotate and fall down at a high point, part of the large and small grinding balls fall to a transverse shaft position rotating reversely, a helical blade on the transverse shaft is contacted with the large and small grinding balls to carry out bidirectional impact grinding on the materials, micron-sized grinding grooves on the large and small grinding balls are alternated with grinding grooves on the helical blade, the materials are ground again by matching with bidirectional impact force, two groups of grinding grooves are distributed in a staggered way along with the change of the direction of the grinding balls, the materials are finely ground and the large and small grinding balls are thrown down, the large and small grinding balls fall down below the roller, and the advancing routes of the large and small grinding balls are guided by matching with a wavy structure on the inner wall of the roller and a side inclined structure, so that the large and small grinding balls drive the materials to fall and roll, the advancing routes of the large and small grinding balls are increased to fully grind the materials, meanwhile, the grinding grooves on the large and small grinding balls and the inner wall of the roller are different in direction, when materials are subjected to rolling grinding, the grinding grooves and the grinding grooves are ground again through staggered movement, compared with the traditional pure rolling grinding, the superfine grinding structure can realize opposite impact, the advancing routes of the large and small grinding balls are increased, the movable gaps between the large and small grinding balls are reduced through the inner wall of the roller with a wavy structure, the gaps are filled, the problem that the grinding fineness is insufficient due to the fact that large gaps exist between the traditional large and small grinding balls is effectively avoided, the grinding effect is improved, meanwhile, the materials are subjected to refining grinding again through the staggered movement between the grinding grooves and the grinding grooves through the arranged superfine grinding grooves, the grinding effect of epoxy resin is effectively improved, micron-sized powder can be prepared, and the stable forming of the subsequent waterborne epoxy resin emulsion is facilitated;

2. the invention is provided with a self-absorption discharging and blowing structure, the rotation of a roller drives a first magnetic block and a sieving net to rotate, the material powder is sieved by a micron-sized sieving net, simultaneously, when the first magnetic block moves to a second magnetic block, the second magnetic block is pushed to move downwards by repulsive force, the second magnetic block drives a rack to move downwards, a tooth block rotating in a single direction drives a gear ring to rotate by matching with the tooth block with blocked rotation direction on the left side when the rack moves downwards, further, a fan blade component is driven to rotate to generate suction force, the falling powder is guided to a feeding seat to be collected, the tooth block with blocked reverse rotation on the right side does not drive the gear ring on the right side to rotate, the single-direction discharging of the powder is realized, meanwhile, the pushing of the second magnetic block is gradually lost in the moving process of the first magnetic block, the second magnetic block moves upwards under the action of a spring to drive the fan blade component on the right side to rotate, external air is introduced into the material guide seat, a thrust is provided for the screening net through upward movement of the second magnetic block, the left fan blade component cannot rotate at the moment, materials blocked in the screening net can be blown into the roller through air pressure to be ground again, the self-suction discharging and material blowing structure can realize one-way discharging and one-way air pressure application through rotation of the roller, automatic discharging is realized, long-time operation of the roller is effectively avoided, all materials are uniformly ground and then uniformly discharged, the grinding degree of the materials cannot be known in the process, the machine halt observation is needed, and the operation is repeated, so that the grinding time and efficiency are greatly improved, meanwhile, the one-way air pressure structure is arranged, the materials blocked in the screening net can be blown into the roller, the influence of blanking due to material blockage is avoided, and the problem that the materials blocked by large particles cannot be continuously ground is also avoided, the automatic and timely blanking can ensure the uniform grinding of the materials.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a side view of the gear of the present invention;

FIG. 3 is a schematic side sectional view of the roller of the present invention;

FIG. 4 is a schematic diagram of the front structure of the grinding ball of the present invention;

FIG. 5 is an enlarged view of the portion A in FIG. 3 according to the present invention;

FIG. 6 is a schematic top sectional view of a material guiding seat according to the present invention;

FIG. 7 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 8 is a schematic view of a front cross-sectional view of the rack of the present invention;

fig. 9 is a schematic side view of a ring gear of the present invention.

In the figure: 1. a base; 2. a mounting frame; 3. a drum; 4. a horizontal axis; 5. a motor; 6. a gear; 7. a gear sleeve; 8. a toothed ring; 9. mounting a plate; 10. a helical blade; 11. grinding balls; 12. grinding a groove; 13. screening the net; 14. a first magnetic block; 15. a baffle ring; 16. a material guide seat; 17. a spring; 18. a second magnetic block; 19. a rack; 191. a limiting groove; 192. a tooth block; 20. a port; 21. a ring gear; 22. a fan blade assembly; 23. a feeding seat; 24. and (4) feeding a material inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.

Referring to fig. 1-9, the present invention provides a technical solution: a preparation device of water-based epoxy resin emulsion comprises a base 1, a mounting frame 2, a roller 3, a transverse shaft 4, a motor 5, a gear 6, a gear sleeve 7, a gear ring 8, a mounting plate 9, a helical blade 10, a grinding ball 11, a grinding groove 12, a screening net 13, a first magnetic block 14, a retaining ring 15, a material guide seat 16, a spring 17, a second magnetic block 18, a rack 19, a limiting groove 191, a gear block 192, a through opening 20, a gear ring 21, a fan blade assembly 22, a feeding seat 23 and a feeding hole 24;

example 1

Referring to fig. 1-5, the device comprises a base 1, wherein a mounting frame 2 is fixed on the top of the base 1, a roller 3 is movably mounted in the top of the mounting frame 2 in an embedded manner, a transverse shaft 4 is mounted on a bearing in the roller 3, and a feed inlet 24 is connected to the outer side of the roller 3; further comprising: the grinding machine comprises a motor 5, the motor 5 is fixed on the top of a mounting frame 2, the output end of the motor 5 is connected with a gear 6, the upper side and the lower side of the gear 6 are respectively meshed with a gear ring 8 and a gear sleeve 7, the gear sleeve 7 is fixedly sleeved on the end part of a roller 3, one side of the gear ring 8 is fixedly provided with a mounting plate 9, the mounting plate 9 is fixedly sleeved on one end of a transverse shaft 4, one end of the transverse shaft 4 penetrates through the edge end of the roller 3, the middle part of the transverse shaft 4 is provided with a helical blade 10, a grinding ball 11 is placed in the roller 3, and the outer side of the grinding ball 11, the inner wall of the roller 3 and the outer side of the helical blade 10 are all provided with grinding grooves 12; the interior of the roller 3 is designed into a wave-shaped structure, the grinding grooves 12 on the inner wall of the roller 3 are distributed in an equiangular and oblique manner, the width of the grinding grooves 12 is 400 micrometers, the diameter of the roller 3 is gradually increased from outside to inside, the roller 3 and the transverse shaft 4 rotate in the reverse direction, when materials are ground through the large and small grinding balls 11, the grinding balls 11 are in contact with the helical blades 10 and are matched with the grinding grooves 12 for grinding, meanwhile, the grinding balls 11 are thrown under the stress, the grinding effect of the grinding balls 11 is improved, the grinding balls 11 and the materials fall into the roller 3, and the grinding balls 11 move again by matching with the shape and the wave-shaped structure of the roller 3, so that the grinding balls 11 are in contact with the grinding grooves 12 in the roller 3 in a staggered manner, the materials are ground again, and micron-grade powder is prepared by carrying out multi-stage multi-direction grinding on the materials;

example 2

Referring to fig. 1, 3 and 6-9, a screening net 13 is disposed in the middle of a roller 3, a first magnetic block 14 is disposed at a side of the screening net 13, the first magnetic block 14 is fixed in the roller 3 in an embedded manner, a baffle ring 15 is sleeved at the outer side of the middle of the roller 3, a material guide base 16 is attached to the bottom of the roller 3, a second magnetic block 18 is connected to a cavity at the top of the material guide base 16 through a spring 17, a rack 19 is fixed at a side of the second magnetic block 18, the rack 19 is movably mounted on the inner wall of the cavity of the material guide base 16, a through opening 20 is formed at a side of the material guide base 16, a gear ring 21 is movably mounted in the through opening 20 in an embedded manner, the gear ring 21 is located at one side of the rack 19, a fan blade assembly 22 is mounted in the gear ring 21, a material feeding base 23 is fixed at the top of the base 1, and one end of the material feeding base 23 is connected with the through opening 20, the sieving net 13 is distributed in the roller 3 at equal angles, the sieving net 13 is positioned at the low point of the wave-shaped structure of the roller 3, the aperture of the sieving net 13 is 400 μm, the first magnetic blocks 14 are symmetrically arranged at the two sides of the sieving net 13, the magnetism of the first magnetic blocks 14 and the magnetism of the second magnetic blocks 18 are mutually repulsive, silica gel is sleeved outside the second magnetic blocks 18 and is in adhesive elastic sliding in the material guide seat 16, the baffle ring 15 is in adhesive installation with the middle part of the roller 3, the width of the baffle ring 15 is larger than that of the sieving net 13, the lower part of the baffle ring 15 is in an open structural design and is matched with the material guide seat 16, the top of the material guide seat 16 is in adhesive fit with the bottom of the roller 3, the side of the rack 19 is provided with a limiting groove 191, a gear block 192 is connected in the limiting groove 191 through a torsion spring rotating shaft, the rack 19 is vertically distributed in a T-shaped structure, the gear blocks 192 are distributed on the rack 19 at equal intervals, the rack blocks 192 rotate on the rack 19 in a unidirectional mode through the limiting grooves 191, the rack blocks 192 and the gear rings 21 are meshed with each other, the rack 19 and the gear rings 21 are symmetrically arranged in the material guide seat 16, the unidirectional rotation directions of the rack blocks 192 on the two rack bars 19 are opposite, the rotation of the roller 3 drives the first magnetic block 14 and the sieving net 13 to rotate, the first magnetic block 14 reaches the position of the second magnetic block 18 and pushes the second magnetic block 18 to move downwards, the second magnetic block 18 drives the left gear ring 21 and the fan blade component 22 to rotate through the rack bars 19 and the gear blocks 192, powder falling from the sieving net 13 is absorbed into the feeding seat 23 to be stored, meanwhile, when the second magnetic block 18 ascends, the right gear ring 21 and the fan blade component 22 are driven to rotate through the rack bars 19 and the gear blocks 192, air is blown into the sieving net 13, and the blocked material is blown into the roller 3, so that blanking is prevented from being blocked.

The working principle is as follows: when the preparation equipment of the aqueous epoxy resin emulsion is used, firstly, as shown in figures 1-5, materials are poured into a roller 3 through a feeding hole 24, then the feeding hole 24 is sealed, a motor 5 is started, the motor 5 drives a gear sleeve 7 and a gear ring 8 to rotate through a gear 6, the roller 3 is driven to rotate through the gear sleeve 7, a transverse shaft 4 is driven to rotate through the gear ring 8 and a mounting plate 9, the reverse rotation of the transverse shaft 4 and the roller 3 is realized, when the roller 3 rotates, inner large and small grinding balls 11 rotate along with the rotation and fall from high points, in the falling process, part of the large and small grinding balls 11 are in contact with helical blades 10 on the transverse shaft 4 and are matched with grinding grooves 12 on the grinding balls 11 and the helical blades 10, the materials can be ground, meanwhile, the helical blades 10 rotate to throw the grinding balls 11 from different angles, the large and small grinding balls 11 fall to the lower position of the roller 3, through a wavy structure of the inner wall of the roller 3, the falling range of the grinding balls 11 is increased, the grinding balls 11 are rolled, the grinding time and the grinding space are increased, and the grinding grooves 12 on the grinding balls 11 are matched with the inner wall of the roller 3, the grinding grooves 12 on the inner wall of the roller 3, the roller is ground into micron-grade, and the materials are ground into micron-grade materials;

then, as shown in fig. 1, 3 and 6-9, the drum 3 rotates to make the plurality of sieving nets 13 change their positions, the blocking ring 15 blocks the outside of the drum 3 and the sieving nets 13, so that only the bottom sieving net 13 can guide the material into the material guiding seat 16, when the drum 3 rotates, the first magnetic block 14 inside the drum rotates to the position of the second magnetic block 18, the second magnetic block 18 is pushed to move downwards in the material guiding seat 16, the second magnetic block 18 drives the rack 19 to move downwards, at this time, the tooth block 192 inside the rack 19 on the left side contacts with the gear ring 21 and is blocked by the blocking groove 191, when the tooth block 192 on the left side moves downwards, the rotation will not occur, and further the gear ring 21 on the left side can be driven to rotate, and the gear ring 21 drives the fan blade assembly 22 to rotate, the material that drops in the screening net 13 is inhaled in the feeding seat 23 through opening 20, the right side tooth piece 192 of while opposite distribution can not drive right side ring gear 21 and rotate, simultaneously when first magnetic path 14 leaves second magnetic path 18 position, second magnetic path 18 returns the normal position under spring 17's effect, left side flabellum subassembly 22 can not rotate this moment, right side flabellum subassembly 22 rotates, blow external wind to screening net 13, cooperation second magnetic path 18 rises, make the large granule material of jam on the screening net 13 blown out and continuously grind, avoid influencing the derivation of follow-up material simultaneously, guide seat 16 can reserve partial space between the bottom of cylinder 3 at the top of lateral position department, make things convenient for the circulation of derivation and wind-force of material, avoid material and wind-force to carry untimely.

Those not described in detail in this specification are prior art well known to those skilled in the art, and in the description of the present invention, "plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The preparation equipment of the water-based epoxy resin emulsion comprises a base (1), wherein a mounting rack (2) is fixed at the top of the base (1), a roller (3) is movably mounted in an embedded manner in the top of the mounting rack (2), a transverse shaft (4) is mounted on an inner bearing of the roller (3), and a feeding hole (24) is connected to the outer side of the roller (3);

the method is characterized in that: further comprising:

the motor (5) is fixed to the top of the mounting frame (2), the output end of the motor (5) is connected with a gear (6), the upper side and the lower side of the gear (6) are respectively meshed with a toothed ring (8) and a toothed sleeve (7), the toothed sleeve (7) is fixedly sleeved on the end portion of the roller (3), one side of the toothed ring (8) is fixedly provided with a mounting plate (9), the mounting plate (9) is fixedly sleeved on one end of the transverse shaft (4), one end of the transverse shaft (4) penetrates through the side end of the roller (3), the middle of the transverse shaft (4) is provided with a spiral blade (10), grinding balls (11) are placed in the roller (3), grinding grooves (12) are formed in the outer side of the grinding balls (11), the inner wall of the roller (3) and the outer side of the spiral blade (10), a screening net (13) is arranged in the middle of the roller (3), a first magnetic block (14) is arranged on the side of the screening net (13), and the first magnetic block (14) is fixed inside of the embedded roller (3);

the baffle ring (15), the baffle ring (15) is sleeved outside the middle of the roller (3), the bottom of the roller (3) is fitted with the guide seat (16), the cavity at the top of the guide seat (16) is connected with the second magnetic block (18) through the spring (17), the side of the second magnetic block (18) is fixed with the rack (19), the rack (19) is movably mounted on the inner wall of the cavity of the guide seat (16), the side of the guide seat (16) is penetrated and provided with the through hole (20), the through hole (20) is embedded with the gear ring (21), the gear ring (21) is positioned on one side of the rack (19), the gear ring (21) is internally provided with the fan blade component (22), the side of the rack (19) is provided with the limit groove (191), the limit groove (191) is connected with the gear block (192) through the torsion spring rotating shaft, the rack (19) is vertically distributed in a T-shaped structure, the gear blocks (192) are equidistantly distributed on the rack (19), the gear ring (192) is arranged on the rack (19) through the limit groove (191), the two gear ring (192), the two gear block (192) are symmetrically meshed with the rack (19), and the rack (19) and the two guide blocks (21) are symmetrically arranged in opposite directions, the top of base (1) is fixed with feed seat (23), and the one end of feed seat (23) is connected with opening (20).

2. The apparatus for preparing an aqueous epoxy resin emulsion according to claim 1, wherein: the interior of the roller (3) is designed into a wave-shaped structure, the grinding grooves (12) on the inner wall of the roller (3) are distributed obliquely at equal angles, the width of the grinding grooves (12) is 300 mu m, and the diameter of the roller (3) is gradually increased from outside to inside.

3. The apparatus for preparing an aqueous epoxy resin emulsion according to claim 1, wherein: the screening net (13) is distributed in the roller (3) at equal angles, the screening net (13) is positioned at the low point of the wave-shaped structure of the roller (3), and the aperture of the screening net (13) is 400 mu m.

4. The apparatus for preparing an aqueous epoxy resin emulsion according to claim 1, wherein: the first magnetic blocks (14) are symmetrically arranged on two sides of the screening net (13), the magnetism of the first magnetic blocks (14) and the magnetism of the second magnetic blocks (18) are mutually repellent, and silica gel is sleeved outside the second magnetic blocks (18) and slides in the material guide seat (16) in a fit and elastic mode.

5. The apparatus for preparing an aqueous epoxy resin emulsion according to claim 1, wherein: keep off ring (15) and the middle part laminating installation of cylinder (3), and the width that keeps off ring (15) is greater than the width of screening net (13) to keep off the below of ring (15) and match with guide seat (16) for the design of open form structure, the top of guide seat (16) and the bottom laminating cooperation of cylinder (3) moreover.