CN118809859B - A mixing device and preparation method for composite lubricating material - Google Patents
A mixing device and preparation method for composite lubricating material Download PDFInfo
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- CN118809859B CN118809859B CN202411293986.6A CN202411293986A CN118809859B CN 118809859 B CN118809859 B CN 118809859B CN 202411293986 A CN202411293986 A CN 202411293986A CN 118809859 B CN118809859 B CN 118809859B
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- 239000000463 material Substances 0.000 title claims abstract description 64
- 238000002156 mixing Methods 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 85
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 238000007599 discharging Methods 0.000 claims description 24
- 230000009467 reduction Effects 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 11
- 239000004642 Polyimide Substances 0.000 description 8
- 229920001721 polyimide Polymers 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000011344 liquid material Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000005543 nano-size silicon particle Substances 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 239000011343 solid material Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101150114468 TUB1 gene Proteins 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/12—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
- B29B7/16—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
本发明涉及混合装置的技术领域，公开了一种复合润滑材料制备用混合装置及制备方法，其中，一种复合润滑材料制备用混合装置，包括均质桶、设置在均质桶开口处的桶盖、设置于桶盖上的电机支架、设置于电机支架上的驱动电机一、连接在驱动电机一主轴上的搅拌轴，搅拌轴穿过桶盖延伸至均质桶底，搅拌轴上设置有搅拌单元。该复合润滑材料制备用混合装置，通过将上层均质板、中层均质板和下层均质板依次铰接且上层均质板浮于液层表面，当均质桶内液层变化时，浮力板带动上层均质板、中层均质板和下层均质板位置变化，重新在液层内均匀分布，使均质板对不同深度的物料始终保持高效的混合效率。
The present invention relates to the technical field of mixing devices, and discloses a mixing device and a preparation method for composite lubricating material preparation, wherein a mixing device for composite lubricating material preparation comprises a homogenizing barrel, a barrel cover arranged at the opening of the homogenizing barrel, a motor bracket arranged on the barrel cover, a driving motor 1 arranged on the motor bracket, and a stirring shaft connected to the main shaft of the driving motor 1, wherein the stirring shaft passes through the barrel cover and extends to the bottom of the homogenizing barrel, and a stirring unit is arranged on the stirring shaft. The mixing device for composite lubricating material preparation is characterized in that an upper homogenizing plate, a middle homogenizing plate and a lower homogenizing plate are hinged in sequence, and the upper homogenizing plate floats on the surface of a liquid layer. When the liquid layer in the homogenizing barrel changes, the buoyancy plate drives the upper homogenizing plate, the middle homogenizing plate and the lower homogenizing plate to change their positions, and they are evenly distributed in the liquid layer again, so that the homogenizing plate always maintains a high mixing efficiency for materials of different depths.
Description
Technical Field
The invention relates to the technical field of mixing devices, in particular to a mixing device for preparing a composite lubricating material and a preparation method.
Background
A homogenizer is a mechanical device for homogenizing, dispersing, emulsifying and breaking up liquid or semi-liquid materials, the main function of which is to refine large particles or droplets in the material to smaller particle sizes by means of high pressure, high speed shearing or impact, etc., so as to obtain a uniform, stable mixture. The homogenizer is widely applied to the industries of food, pharmacy, chemical industry and the like.
The patent publication No. CN111215200A discloses a grinding homogenizer which comprises an upper tank body, a feeding mechanism, a stirring mechanism and a homogenizing mechanism, wherein the feeding mechanism is arranged at the upper edge part of the upper tank body and comprises a blanking frame which is embedded and installed on the upper tank body, a first motor is arranged at the upper part of the blanking frame, a reaming blade is arranged on the part of the first motor, which is positioned in the blanking frame, a dispersing blade is arranged on the part, which is positioned outside the blanking frame, of the first motor, the stirring mechanism is arranged at the upper center part of the upper tank body, the homogenizing mechanism is connected with the bottom of the upper tank body and comprises a homogenizing box, a rotor which is driven to rotate by a third motor is arranged in the homogenizing box, and a stator which is arranged outside the rotor and can move up and down by an external driving device and has adjustable clearance with the rotor, and the device pulverizes and homogenizes and emulsifies solid feed.
The prior art has the following defects:
In the stirring device, if the position of the homogenizing plate for stirring is kept unchanged from the liquid level, and the liquid level height is changed, the following adverse effects may be brought about;
The stirring efficiency is unstable, when the liquid level is lowered, part of the stirring plate can be exposed to the air, so that the stirring efficiency is lowered, and the liquid can not be effectively stirred;
Non-uniform mixing if the position of the stirring plate is not adjusted along with the height change of the liquid level, the upper and lower layers of the liquid can be mixed unevenly. When the stirring plate is fixed at a certain height, only part of the liquid is possibly stirred, and other areas are not fully mixed;
Dead zone and stagnant zone-a fixed position stirring plate may create dead zone or stagnant zone in the liquid, which may not be effectively stirred, resulting in uneven material distribution, affecting the quality of the final product;
shear force variation-as the liquid level varies, the fixed stirring plate position may cause a variation in shear force, especially when the liquid level is higher or lower than the optimal position of the stirring plate design, too high or too low shear force may be generated, which affects the treatment of sensitive materials;
The energy consumption increases if the position of the stirring plate is not adjusted with the liquid level, which may lead to a decrease in energy utilization efficiency, for example, when the liquid level is low, the idle part of the stirring plate may waste energy, and when the liquid level is high, additional energy may be required to drive a larger liquid volume.
Disclosure of Invention
In view of the problems that the position of a homogenizing plate relative to a rotating shaft is fixed and the homogenizing plate cannot be fully utilized when the liquid level changes in the prior art, a mixing device for preparing a composite lubricating material and a preparation method are provided.
The application provides a mixing device for preparing a composite lubricating material, and aims to ensure that a plurality of homogenizing plates are uniformly distributed in a liquid layer again when the liquid layer in a homogenizing barrel changes, so that the homogenizing plates always maintain high-efficiency mixing efficiency for materials with different depths.
The technical scheme is that the mixing device for preparing the composite lubricating material comprises a homogenizing barrel, a barrel cover arranged at an opening of the homogenizing barrel, a motor bracket arranged on the barrel cover, a driving motor I arranged on the motor bracket, and a stirring shaft connected to a main shaft of the driving motor I, wherein the stirring shaft penetrates through the barrel cover to extend to the bottom of the homogenizing barrel, and is characterized in that a stirring unit is arranged on the stirring shaft;
The stirring unit comprises a mouth-shaped stirring frame arranged on a stirring shaft, sliding grooves are formed in vertical rods on two sides of the stirring frame, springs are arranged at the top ends of the sliding grooves, an upper-layer homogenizing plate, a middle-layer homogenizing plate and a lower-layer homogenizing plate are symmetrically arranged along the stirring shaft, sliding columns are fixedly connected to the edges of the upper-layer homogenizing plate and the lower-layer homogenizing plate, the sliding columns are arranged in the sliding grooves, the lower-layer homogenizing plate is fixed at the bottom of the sliding grooves through the sliding columns, the upper-layer homogenizing plate slides along the sliding grooves through the sliding columns, a connecting rod I is hinged between the middle-layer homogenizing plate, the upper-layer homogenizing plate and the lower-layer homogenizing plate, two groups of through holes are horizontally formed in the middle-layer homogenizing plate, a pair of U-shaped sliding rods respectively slide and penetrate through the through holes of the middle-layer homogenizing plate on two sides of the stirring shaft, the U-shaped sliding rods at symmetrical positions are connected through connecting blocks, a left-right through groove penetrating through the stirring shaft is formed in the stirring shaft, the connecting blocks vertically slide in the through grooves, a buoyancy plate is sleeved on the stirring shaft in a sliding manner, and two connecting rods are hinged between the buoyancy plate and the upper-layer homogenizing plate at symmetrical positions;
after the material liquid is filled into the homogenizing barrel, the buoyancy plate floats on the material liquid, the springs are in a compressed state, and the upper homogenizing plate, the middle homogenizing plate and the lower homogenizing plate are distributed in the liquid layer at equal intervals.
By adopting the scheme, through the upper layer homogeneity board, middle level homogeneity board and lower floor homogeneity board articulated in proper order and upper layer homogeneity board floats on the liquid layer surface, when the liquid layer changes in the homogeneity bucket, buoyancy board drives upper layer homogeneity board, middle level homogeneity board and lower floor homogeneity board position change, evenly distributed in the liquid layer again makes the homogeneity board remain efficient mixing efficiency all the time to the material of different degree of depth.
Further, scraping plates are arranged on the vertical rods and the bottom rods on the two sides of the stirring frame, and the scraping plates are attached to the inner wall of the homogenizing barrel.
By adopting the scheme, the plurality of scrapers are arranged to scrape the materials adhered to the inner wall of the homogenizing barrel, so that the materials are fused in the liquid materials.
Further, a solid feed inlet and a liquid feed inlet are formed in the barrel cover.
By adopting the scheme, the solid materials and the liquid materials are respectively provided with different feeding ports, so that the solid materials are more uniformly dispersed in the liquid during feeding.
Furthermore, a plurality of resistance reducing holes are formed in each of the upper layer of homogenizing plate, the middle layer of homogenizing plate and the lower layer of homogenizing plate.
By adopting the scheme, the pressure of liquid materials to each homogenizing plate in the stirring process is reduced by arranging the drag reduction holes.
Further, the upper layer homogeneous plate, the middle layer homogeneous plate and the lower layer homogeneous plate are respectively provided with an elastic drag reduction piece, a hole is formed in the center of the elastic drag reduction piece, and cracks are distributed from the hole wall to the edge of the elastic drag reduction piece at equal intervals to form a plurality of elastic teeth.
By adopting the scheme, through setting up the flexible elasticity drag reduction piece, the elasticity tooth takes place to deform when receiving great resistance when the homogeneity board rotates, enlarges the size of elasticity drag reduction piece centre bore, and the change centre bore of elasticity drag reduction piece self-adaptation can keep the resistance that receives when the homogeneity board stirs relatively stable.
Further, the bottom of homogeneity bucket is provided with driving motor two, the bottom through connection of homogeneity bucket has the ejection of compact chamber, be provided with ejection of compact tooth on the driving motor main shaft two, the lateral wall in ejection of compact chamber is provided with the discharging pipe, be provided with the filter screen between ejection of compact tooth and the ejection of compact chamber.
By adopting the scheme, through the rotation of the discharging teeth, the mixture subjected to centrifugal force is discharged by the discharging pipe, and meanwhile, the filter screen is arranged to prevent the agglomerated materials from being discharged by the discharging pipe.
Further, the end of discharging pipe is provided with the valve, the intercommunication is provided with the back flow on the discharging pipe, and the other end of back flow is from the lateral wall top intercommunication of homogeneity bucket to in the homogeneity bucket.
By adopting the scheme, the lower mixed material in the homogenizing barrel flows back to the upper layer of the liquid level through the reflux pipe, so that the lower material and the upper material are fully fused, and the stirring effect is improved.
Further, the bottom of the homogenizing barrel is provided with a barrel support, and the bottom of the barrel support is connected with a plurality of supporting legs.
By adopting the scheme, the stability of the whole device is improved by arranging the barrel support and the supporting legs.
In another aspect, the invention provides a method of preparing a composite lubricating material, comprising the steps of,
The method comprises the steps of adopting wet mixing, filling industrial alcohol into a homogenizing barrel, adding nano silicon nitride into the industrial alcohol, uniformly stirring, sequentially adding polyimide, graphite and carbon fiber, fully and uniformly mixing, and carrying out suction filtration and drying, wherein the composition and mass fraction of the composite lubricating material are 55-75% of polyimide, 10-25% of carbon fiber, 5-20% of graphite and 3-8% of nano silicon nitride;
And secondly, pouring the mixed mold material into a mold for hot press molding, wherein the mold pressing temperature is 360-380 ℃, the pressure is 35-40 MPa, the temperature and pressure are kept for 40-60 minutes, and the mold is naturally cooled.
By adopting the scheme, the polyimide self-lubricating composite material prepared by the method has the characteristics of high mechanical strength, small friction coefficient, low wear rate and the like, has good lubricating property and mechanical property, can reduce the friction coefficient of the polyimide material by a method of generating a light and thin uniform transfer film on a contact surface, improves the antifriction and wear-resisting capability of the material, and prolongs the service life of the material.
The invention has the beneficial effects that:
Through with upper strata homogeneity board, middle level homogeneity board and lower floor's homogeneity board articulated in proper order and upper strata homogeneity board floats in the liquid layer surface, when the liquid layer changes in the homogeneity bucket, buoyancy board drives upper strata homogeneity board, middle level homogeneity board and lower floor's homogeneity board position change, evenly distributed in the liquid layer again, makes the homogeneity board remain efficient mixing efficiency to the material of different degree of depth all the time.
Through setting up the elasticity drag reduction piece of deformability, the elasticity tooth takes place deformation when receiving great resistance when the homogeneity board rotates, enlarges the size of elasticity drag reduction piece centre bore, and the change centre bore of elasticity drag reduction piece self-adaptation can keep the resistance that receives when the homogeneity board stirs relatively stable.
Drawings
FIG. 1 is a perspective view of a mixing device for preparing a composite lubricating material according to the present invention;
FIG. 2 is a view of the other aspects of FIG. 1 of the present invention;
FIG. 3 is a top view of a mixing device for preparing a composite lubricating material according to the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a perspective view of a stirring frame and related components of a mixing device for preparing a composite lubricating material according to the present invention;
FIG. 6 is a cross-sectional view of a homogenizing barrel of the mixing apparatus for producing a composite lubricating material of the present invention;
FIG. 7 is a front view of an elastic drag reducing sheet in a mixing device for the preparation of a composite lubricating material according to the present invention;
FIG. 8 is a block diagram of a discharge chamber and associated components of a mixing device for preparing a composite lubricant according to the present invention;
FIG. 9 is a diagram showing the change in position of each of the homogenizing plates when the liquid level changes in the mixing apparatus for producing a composite lubricating material according to the present invention.
In the figure:
1. The device comprises a homogenizing barrel, a barrel cover, a motor bracket, a driving motor I, a stirring shaft 6, a stirring frame I, a sliding groove 8, a spring I, a upper homogenizing plate I, a middle homogenizing plate I, a lower homogenizing plate I, a sliding column II, a connecting rod I, a connecting rod 14, a through hole I, a U-shaped sliding rod 15, a 16, a connecting block I, a 17, a through groove I, a 18, a buoyancy plate I, a 19, a connecting rod II, a 20, a scraper blade 21, a solid feed inlet, a 22, a liquid feed inlet, a 23, a drag reducing hole II, a 24, an elastic drag reducing piece, 25, a crack II, a 26, an elastic tooth, a 27, a driving motor II, a 28, a discharge cavity 29, a discharge tooth, a 30, a discharge pipe 31, a filter screen, a 32, a valve 33, a return pipe, a 34, a barrel holder 35 and a supporting leg.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Embodiment 1, refer to fig. 1-9, in order to provide a mixing device for preparing composite lubricating materials for a first embodiment of the present invention, comprising a homogenizing barrel 1, a barrel cover 2 arranged at an opening of the homogenizing barrel 1, a motor bracket 3 arranged on the barrel cover 2, a driving motor 1 arranged on the motor bracket 3, and a stirring shaft 5 connected to a main shaft of the driving motor 4, wherein the stirring shaft 5 extends to the bottom of the homogenizing barrel 1 through the barrel cover 2, and a stirring unit is arranged on the stirring shaft 5; the stirring unit comprises a mouth-shaped stirring frame 6 arranged on a stirring shaft 5, sliding grooves 7 are respectively formed in vertical rods at two sides of the stirring frame 6, springs 8 are arranged at the top ends of the sliding grooves 7, an upper-layer homogenizing plate 9, a middle-layer homogenizing plate 10 and a lower-layer homogenizing plate 11 are symmetrically arranged along the stirring shaft 5, sliding columns 12 are fixedly connected to the edges of the upper-layer homogenizing plate 9 and the lower-layer homogenizing plate 11, the sliding columns 12 are arranged in the sliding grooves 7, the lower-layer homogenizing plate 11 is fixed at the bottom of the sliding grooves 7 through the sliding columns 12, the upper-layer homogenizing plate 9 slides along the sliding grooves 7 through the sliding columns 12, a connecting rod I13 is hinged between the middle-layer homogenizing plate 10, the upper-layer homogenizing plate 9 and the lower-layer homogenizing plate 11, two groups of through holes 14 are respectively formed in the upper level of the middle-layer homogenizing plate 10, a pair of U-shaped sliding rods 15 respectively slide through the through holes 14 at two sides of the stirring shaft 5, the U-shaped homogenizing plates 15 at symmetrical positions are connected through connecting blocks 16, left and right through grooves 17 and 16 penetrating through the through grooves 17 are respectively formed in the stirring shaft 5, 16 vertically slide in the through grooves 17, the upper-layer homogenizing plate 5 is sleeved with the buoyancy plates 18, buoyancy plates 18 are respectively arranged between the buoyancy plates and the buoyancy plates 1 are respectively arranged at the positions and the two buoyancy plates 18, and the buoyancy plates are respectively arranged in the positions and are respectively in the two buoyancy plates and are hinged to the positions between the buoyancy plates and 18, the springs 8 are in a compressed state, and the upper layer homogenizing plate 9, the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11 are equidistantly distributed in the liquid layer.
Specifically, the stirring shaft 5 is fixedly connected to the middle position of the stirring frame 6, the upper layer homogenizing plate 9, the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11 are square, the stirring area is increased, the edges are inverted and arc, stress is reduced, the lengths of a plurality of first connecting rods 13 connecting the upper layer homogenizing plate 9, the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11 are equal, it is noted that the sizes of the homogenizing plates (hereinafter referred to as the homogenizing plates are collectively referred to as the upper layer homogenizing plate 9, the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11) and the connecting rods are not limited to the figures, the size of the homogenizing plates can be adjusted according to actual conditions, after liquid is poured into the homogenizing barrel 1, the buoyancy plate 18 is subjected to buoyancy ascending, the buoyancy plate 18 drives the upper layer homogenizing plate 9 to ascend through the second connecting rods 19, the upper layer homogenizing plate 9 drives the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11 to ascend at equal intervals through the first connecting rods 13, after liquid is discharged, the liquid level in the homogenizing barrel 1 descends, the buoyancy plate 18 drives the upper layer homogenizing plate 9 to descend through the second connecting rods 19, the upper layer homogenizing plate 9 drives the middle layer homogenizing plate 10 and the lower layer 11 to be uniformly distributed at equal intervals in the same time, and the liquid level is uniformly distributed in the liquid layer 10 is always equal to the positions in the homogenizing barrel.
Through articulated upper strata homogeneity board 9, middle level homogeneity board 10 and lower floor homogeneity board 11 in proper order and upper strata homogeneity board 9 floats in the liquid layer surface, when the liquid layer changes in homogenizing barrel 1, buoyancy board 18 drives upper strata homogeneity board 9, middle level homogeneity board 10 and lower floor homogeneity board 11 position change, evenly distributed in the liquid layer again, makes the homogeneity board remain efficient mixing efficiency to the material of different degree of depth all the time.
Referring to fig. 4, scrapers 20 are provided on both side vertical bars and bottom bars of the stirring frame 6, and the scrapers 20 are attached to the inner wall of the homogenizing barrel 1.
Specifically, a scraper 20 is arranged on a cross bar at the bottom of the stirring frame 6, a scraper 20 is arranged on one vertical bar of the stirring frame 6, two scrapers 20 are arranged on the other vertical bar, and the scrapers 20 on the vertical bars at two sides are distributed in a staggered manner.
By providing a plurality of scrapers 20, the material adhered to the inner wall of the homogenizing barrel 1 is scraped off and fused in the liquid material.
Referring to fig. 1, a solid inlet 21 and a liquid inlet 22 are provided on the tub cover 2.
By adopting the scheme, the solid materials and the liquid materials are respectively provided with different feeding ports, so that the solid materials are more uniformly dispersed in the liquid during feeding.
Referring to fig. 5, the upper, middle and lower homogenizing plates 9, 10 and 11 are each provided with a plurality of drag reducing holes 23.
The drag reduction holes 23 can reduce the resistance of the homogenizing plate when rotating in the liquid, thereby reducing the load of a motor or a driving device and improving the stirring efficiency, and the drag reduction holes 23 can promote the flow of the liquid on two sides of the homogenizing plate, so that the liquid can more easily pass through the homogenizing plate, thereby enhancing the stirring effect and promoting the circulation and mixing of the liquid;
The drag reducing holes 23 can reduce the force born by the homogenizing plate, thereby reducing the risk of deformation of the homogenizing plate and prolonging the service life of the homogenizing plate.
Referring to fig. 6-7, the upper layer homogenizing plate 9, the middle layer homogenizing plate 10 and the lower layer homogenizing plate 11 are respectively provided with an elastic drag reduction piece 24, a hole is formed in the center of the elastic drag reduction piece 24, and slits 25 are equidistantly distributed from the hole wall to the edge of the elastic drag reduction piece 24 to form a plurality of elastic teeth 26.
Specifically, the elastic drag reducing piece 24 is annular, the thickness of the elastic drag reducing piece is gradually thinned from the edge to the center, when the stirring speed of the homogenizing plate is increased or the viscosity of the material is increased, the homogenizing plate is subjected to resistance increase, and then the elastic teeth 26 deform in the direction opposite to the stirring direction, so that more flowing liquid is allowed to pass through the elastic drag reducing piece 24, and the load of the homogenizing plate is relieved.
By arranging the deformable elastic damping piece 24, the elastic teeth 26 deform when the homogenizing plate receives larger resistance during rotation, the size of the center hole of the elastic damping piece 24 is enlarged, the self-adaptive change center hole of the elastic damping piece 24 can keep the resistance received during stirring of the homogenizing plate relatively stable.
Referring to fig. 8, a second driving motor 27 is arranged at the bottom of the homogenizing barrel 1, a discharging cavity 28 is connected to the bottom of the homogenizing barrel 1 in a penetrating manner, discharging teeth 29 are arranged on the main shaft of the second driving motor 27, a discharging pipe 30 is arranged on the side wall of the discharging cavity 28, and a filter screen 31 is arranged between the discharging teeth 29 and the discharging cavity 28.
Specifically, the filter screen 31 is annular, clings to the discharging teeth 29, the discharging teeth 29 can be matched with the filter screen 31 to extrude and scatter solid particles of the agglomerate by rotation, and meanwhile, the discharging teeth 29 drive materials to rotate to generate centrifugal force, and the materials are thrown out of the discharging pipe 30 by the centrifugal force.
Through the rotation of the discharge tooth 29, the mixture subjected to centrifugal force is discharged from the discharge pipe 30, and at the same time, the filter screen 31 is arranged to prevent agglomerated material from being discharged from the discharge pipe 30.
Referring to fig. 2, a valve 32 is provided at an end of the discharge pipe 30, a return pipe 33 is provided on the discharge pipe 30 in communication, and the other end of the return pipe 33 is communicated into the homogenizing barrel 1 from above the sidewall of the homogenizing barrel 1.
Specifically, when the valve 32 is closed, the material in the discharge cavity 28 flows back to the homogenizing barrel 1 through the return pipe 33 to be stirred, and when the valve 32 is opened, the material in the discharge cavity 28 is discharged through the discharge pipe 30.
By arranging the return pipe 33, the lower mixed material in the homogenizing barrel 1 flows back to the upper layer of the liquid surface, so that the lower material and the upper material are fully fused, and the stirring effect is improved.
Referring to fig. 1, a tub holder 34 is provided at the bottom of the homogenizing tub 1, and a plurality of legs 35 are connected to the bottom of the tub holder 34.
By providing the barrel rest 34 and the legs 35, stability of the overall device is increased.
The working principle of the invention is as follows:
When the liquid is poured into the homogenizing barrel 1, the buoyancy plate 18 is lifted by buoyancy, the buoyancy plate 18 drives the upper homogenizing plate 9 to lift through the connecting rods II 19, the upper homogenizing plate 9 drives the middle homogenizing plate 10 and the lower homogenizing plate 11 to lift at equal intervals through the connecting rods I13, when the liquid is discharged, the liquid level in the homogenizing barrel 1 is lowered, the buoyancy plate 18 descends, the buoyancy plate 18 drives the upper homogenizing plate 9 to descend through the connecting rods II 19, the upper homogenizing plate 9 drives the middle homogenizing plate 10 and the lower homogenizing plate 11 to descend at equal intervals through the connecting rods I13, and meanwhile, the middle homogenizing plate 10 at symmetrical positions slides relatively, and the upper homogenizing plate 9, the middle homogenizing plate 10 and the lower homogenizing plate 11 are uniformly distributed in the liquid layer at equal intervals all the time no matter how the liquid level changes, so that the plurality of homogenizing plates stir and mix the liquid at high efficiency all the time.
In the stirring device, no matter how the liquid level changes, the following benefits are obtained by always keeping a plurality of homogenizing plates distributed in the liquid at equal intervals:
The evenly stirring effect is that evenly stirring effect can be generated in the whole liquid area by evenly distributed homogenizing plates, dead zones or excessive stirring in local areas are avoided, and the uniformity of the mixture is ensured;
The mixing efficiency is improved, namely the homogenizing plates in the liquid are distributed at equal intervals, so that the energy waste can be effectively reduced, the stirring efficiency is improved, the flow of the whole liquid is more orderly, and the acceleration of the mixing process is facilitated;
Stable liquid flow, namely the equidistant distribution of the homogenizing plates can maintain the stable flow of the liquid, and the phenomenon of vortex or liquid laminar flow caused by uneven local stirring intensity is avoided, so that the stability of the mixing process is ensured;
wear and maintenance are reduced, namely the lower-layer homogenizing plate is always in larger contact with liquid, the upper-layer homogenizing plate is in empty load when the liquid level descends, the homogenizing plate which is uniformly distributed and adapts to the change of the liquid level reduces unbalanced load of a mechanical part, the wear and maintenance requirements of equipment are reduced, and the service life of the equipment is prolonged;
the stirring device is suitable for different liquid levels, the equidistant distribution of the homogenizing plates can ensure the uniform stirring intensity in the whole liquid volume no matter the liquid level is high or low, and the problem of uneven mixing generated when the liquid level changes is avoided.
Embodiment 2 the present invention provides a method for preparing a composite lubricating material, using a mixing device for preparing a composite lubricating material, comprising the steps of:
The method comprises the steps of adopting wet mixing, filling industrial alcohol into a homogenizing barrel 1, adding nano silicon nitride into the industrial alcohol, uniformly stirring, sequentially adding polyimide, graphite and carbon fiber, fully and uniformly mixing, and carrying out suction filtration and drying, wherein the composition and mass fraction of the composite lubricating material are 60% of polyimide, 20% of carbon fiber, 10% of graphite and 5% of nano silicon nitride;
And secondly, pouring the mixed mold material into a mold for hot press molding, wherein the mold pressing temperature is 365 ℃, the pressure is 40MPa, the heat preservation and the pressure maintaining are carried out for 40 minutes, and the mold is naturally cooled.
The polyimide self-lubricating composite material prepared by the method has the characteristics of high mechanical strength, small friction coefficient, low wear rate and the like, has good lubricating property and mechanical property, can reduce the friction coefficient of the polyimide material by a method of enabling a contact surface to generate a thin and uniform transfer film, improves the antifriction and wear-resistant capability of the material, and prolongs the service life of the material.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (7)
1. The mixing device for preparing the composite lubricating material comprises a homogenizing barrel (1), a barrel cover (2) arranged at the opening of the homogenizing barrel (1), a motor bracket (3) arranged on the barrel cover (2), a driving motor I (4) arranged on the motor bracket (3) and a stirring shaft (5) connected to a main shaft of the driving motor I (4), wherein the stirring shaft (5) penetrates through the barrel cover (2) to extend to the bottom of the homogenizing barrel (1), and is characterized in that a stirring unit is arranged on the stirring shaft (5);
The stirring unit comprises a mouth-shaped stirring frame (6) arranged on a stirring shaft (5), sliding grooves (7) are formed in vertical rods on two sides of the stirring frame (6), springs (8) are arranged at the top ends of the sliding grooves (7), an upper-layer homogenizing plate (9), a middle-layer homogenizing plate (10) and a lower-layer homogenizing plate (11) are symmetrically arranged along the stirring shaft (5), sliding columns (12) are fixedly connected with edges of the upper-layer homogenizing plate (9) and the lower-layer homogenizing plate (11), the sliding columns (12) are arranged in the sliding grooves (7), the lower-layer homogenizing plate (11) is fixed at the bottom of the sliding grooves (7) through the sliding columns (12), the upper-layer homogenizing plate (9) slides along the sliding grooves (7) through the sliding columns (12), a connecting rod I (13) is hinged between the middle-layer homogenizing plate (10) and the upper-layer homogenizing plate (9) and the lower-layer homogenizing plate (11), two groups of through holes (14) are horizontally formed in the upper-layer homogenizing plate (10), a pair of U-shaped homogenizing plates (15) respectively slide in the positions of the two sides of the stirring shaft (5) and are respectively connected with the upper-layer homogenizing plate (11) through the sliding rods (16) through the sliding rods (17), the connecting block (16) vertically slides in the through groove (17), a buoyancy plate (18) is sleeved on the stirring shaft (5) in a sliding manner, and a connecting rod II (19) is hinged between the buoyancy plate (18) and the upper-layer homogenizing plate (9) at a symmetrical position;
elastic drag reduction pieces (24) are arranged on the upper-layer homogenizing plate (9), the middle-layer homogenizing plate (10) and the lower-layer homogenizing plate (11), a hole is formed in the center of each elastic drag reduction piece (24), and cracks (25) are equidistantly distributed from the hole wall to the edge of each elastic drag reduction piece (24) to form a plurality of elastic teeth (26);
After the material liquid is filled into the homogenizing barrel (1), the buoyancy plate (18) floats on the material liquid, the springs (8) are in a compressed state, and the upper homogenizing plate (9), the middle homogenizing plate (10) and the lower homogenizing plate (11) are distributed in the liquid layer at equal intervals.
2. The mixing device for preparing the composite lubricating material according to claim 1, wherein scraping plates (20) are arranged on vertical rods and bottom rods on two sides of the stirring frame (6), and the scraping plates (20) are attached to the inner wall of the homogenizing barrel (1).
3. The mixing device for preparing the composite lubricating material according to claim 1, wherein the barrel cover (2) is provided with a solid feed port (21) and a liquid feed port (22).
4. The mixing device for preparing the composite lubricating material according to claim 1, wherein a plurality of drag reduction holes (23) are formed in each of the upper-layer homogenizing plate (9), the middle-layer homogenizing plate (10) and the lower-layer homogenizing plate (11).
5. The mixing device for preparing the composite lubricating material according to claim 1, wherein a second driving motor (27) is arranged at the bottom of the homogenizing barrel (1), a discharging cavity (28) is connected to the bottom of the homogenizing barrel (1) in a penetrating mode, discharging teeth (29) are arranged on a main shaft of the second driving motor (27), a discharging pipe (30) is arranged on the side wall of the discharging cavity (28), and a filter screen (31) is arranged between the discharging teeth (29) and the discharging cavity (28).
6. The mixing device for preparing the composite lubricating material according to claim 5, wherein a valve (32) is arranged at the end part of the discharging pipe (30), a return pipe (33) is communicated with the discharging pipe (30), and the other end of the return pipe (33) is communicated into the homogenizing barrel (1) from the upper part of the side wall of the homogenizing barrel (1).
7. The mixing device for preparing the composite lubricating material according to claim 1, wherein a barrel support (34) is arranged at the bottom of the homogenizing barrel (1), and a plurality of supporting legs (35) are connected to the bottom of the barrel support (34).
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