CN114029130A - Ring spring type resonance mill - Google Patents
Ring spring type resonance mill Download PDFInfo
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- CN114029130A CN114029130A CN202111091160.8A CN202111091160A CN114029130A CN 114029130 A CN114029130 A CN 114029130A CN 202111091160 A CN202111091160 A CN 202111091160A CN 114029130 A CN114029130 A CN 114029130A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
Abstract
The invention provides an annular spring type resonance grinding machine, which relates to the field of new material preparation technical equipment, and particularly comprises a grinding cylinder, a grinding head and a grinding head, wherein the grinding cylinder is used for placing a material to be ground and a grinding medium; the supporting part comprises a supporting ring which is sleeved on the outer wall of the grinding cylinder at intervals; the first elastic part is provided with a plurality of resonance springs, the resonance springs are uniformly distributed between the support ring and the grinding cylinder, and two ends of each resonance spring are respectively connected to the outer walls of the support ring and the grinding cylinder; the first elastic part forms an annular spring structure on the outer wall of the grinding cylinder; the second elastic part is arranged below the supporting part and is elastically connected with the supporting part; the supporting part is provided with a vibration motor, and the vibration motor starts to excite the supporting part to vibrate on the second elastic part so as to promote the grinding cylinder to work in a resonance or near-resonance state under the action of the first elastic part; the grinding machine works in a resonance/near-resonance area, and the mechanical property of the grinding machine is improved through the annular spring structure, so that the grinding efficiency and the energy utilization rate of the grinding machine are obviously improved.
Description
Technical Field
The invention relates to the field of new material preparation technical equipment, in particular to an annular spring type resonance grinding machine.
Background
The vibrating mill is designed by utilizing a vibration principle, is used for grinding materials into fine particles, and mainly comprises a grinding cylinder, a supporting spring, a vibration isolation spring and vibrating equipment, wherein the vibrating equipment is usually a vibration exciter and a motor or a vibrating motor. The mill cylinder body does rotary motion through high-frequency vibration which is generated by vibration equipment and can reach 1500 times/min, and vibration energy is transmitted into the cylinder body, so that a medium in the cylinder body obtains three motions: the large materials can be rapidly crushed by intense throwing motion; the material is ground by high-speed homodromous autorotation movement; the slow revolution motion plays a role in material homogenization. The grinding medium is strongly impacted and rotated, the materials entering the cylinder body are ground under the impact and grinding action of the grinding medium, gradually move to the discharge hole along with the balance of the charge level, and finally are discharged out of the cylinder body of the grinding machine to form a grinding product.
The vibrating mill has wide application range, can be used for grinding raw materials such as pottery stone, feldspar, clay, talc, silica sand, quartz, kaolin, limestone, magnesia, medium fluorite, alumina, calcined refractory clay, glass, zircon, slag, cement and the like, can also be used for grinding materials such as zinc sinter, sulfide ore, aluminum ore, super-hard alloy, chromium ore, nickel alloy, copper, iron powder, enamel powder and the like, and can be used for deep processing of novel synthetic materials and magnetic materials from superfine grinding of industrial minerals and raw materials in the departments of common metallurgy, building materials, non-metallic ores, coal, chemical industry, light industry and the like, and the processed materials can reach more than one hundred.
At present, the chemical methods for manufacturing new materials, such as nanoscale powder materials, are more and more polluted, but the nano manufacturing machine which adopts physical methods for pollution-free is lacked, and the aim can be achieved by optimizing a vibration mill.
At present, the preparation of new material nano powder mostly stays in the traditional planetary ball mill, and researchers are gradually exploring new mills, for example, patent CN201510472649.8 discloses a double-mass double-excitation resonance mill device. However, the existing vibration mills generally have the problems of small processing amount per machine, non-ideal process matching in large-scale industrial production, raw material pollution caused by impurities in the grinding process and the like. Therefore, the development and popularization of a new generation of energy-saving vibration grinding equipment can fill the equipment vacancy in the superfine powder processing industry, accelerate the technical transformation of old equipment of enterprises, fully exert the processing capacity of new technical equipment, develop the potential of the new technical equipment in the aspect of low-cost and high-efficiency manufacturing of new materials and increase the market competitiveness of products.
Disclosure of Invention
The invention provides an annular spring type resonance mill, which is designed into a double-mass lower excitation structure, and can obtain nano powder by arranging two elastic parts to fully enhance the vibration frequency generated by the resonance mill, and can carry out batch production of the nano powder by designing the size of the resonance mill; solves the technical problems that the planetary ball mill in the prior art has small machining amount per hour, unsatisfactory process matching in large-scale industrial production, raw material pollution caused by impurities in the grinding process and the like when in use.
The invention provides an annular spring type resonance grinding machine, which comprises:
the grinding cylinder is used for placing a material to be ground and a grinding medium;
the supporting part comprises a supporting ring which is sleeved on the outer wall of the grinding cylinder at intervals;
the first elastic part is provided with a plurality of resonance springs, the resonance springs are uniformly distributed between the support ring and the grinding cylinder, and two ends of each resonance spring are respectively connected to the outer walls of the support ring and the grinding cylinder; the first elastic part forms an annular spring structure on the outer wall of the grinding cylinder;
the second elastic part is arranged below the supporting part and is elastically connected with the supporting part;
the supporting part is provided with a vibration motor, and the vibration motor starts to excite the supporting part to vibrate on the second elastic part, so that the grinding cylinder works in a resonance or near-resonance state under the action of the first elastic part.
Further, the grinding cylinder comprises an outer grinding cylinder, an inner grinding cylinder, an end cover and a flange;
the outer grinding cylinder is horizontally arranged, two supporting plates which are arranged at intervals are arranged in the outer grinding cylinder in parallel, the supporting plates are perpendicular to the axial direction of the outer grinding cylinder, and the two supporting blocks are respectively arranged at the positions, close to the end parts, of the two sides of the outer grinding cylinder; the inner grinding cylinder sequentially penetrates through the two supporting plates along the axial direction parallel to the outer grinding cylinder, the axial direction of the inner grinding cylinder is coincident with the axial direction of the outer grinding cylinder, and the inner grinding cylinder is completely positioned on the inner side of the outer grinding cylinder;
the two flanges are respectively sleeved on the outer walls of the two axial ends of the outer grinding cylinder; the end face of one side of the flange is flush with the end face of the outer grinding cylinder, and a plurality of first bolt holes are uniformly arranged on the end face of the flange;
the two end covers are respectively arranged at two axial ends of the outer grinding cylinder and are of hollow round table structures with the middle parts protruding towards one side; the hollow circular truncated cone structure of the end cover is matched and clamped with the inner wall of the outer grinding cylinder, the peripheral circumference of the end cover abuts against the end face of the flange provided with the first bolt holes, and a plurality of second bolt holes which are equal to the first bolt holes in number and correspond to the first bolt holes in position are arranged on the peripheral circumference of the end cover; the first bolt hole and the second bolt hole are fixedly connected;
the axial two ends of the outer grinding cylinder are hermetically connected with the end covers, and the axial two ends of the inner grinding cylinder are hermetically connected with the circular truncated cone planes of the hollow circular truncated cone structures of the end covers at the two sides respectively;
the upper end of the outer grinding cylinder is provided with a feed inlet, and a discharge outlet is formed in an end cover on one side of the outer grinding cylinder.
Furthermore, the supporting part is arranged in an axisymmetric structure and comprises a bottom plate and two supporting columns which are arranged on the bottom plate at intervals and symmetrically, and the two supporting columns are provided with a pair of through holes which have the same size and are corresponding to the positions along the horizontal direction;
the outer grinding cylinder penetrates through the pair of through holes along the horizontal direction, and any one through hole forms a support ring sleeved on the outer wall of the grinding cylinder;
the cross section of the inner wall of the through hole along the horizontal direction is set to be a first regular polygon, the cross section of the outer wall of the flange along the horizontal direction is set to be a second regular polygon, and the side positions of the first regular polygon and the second regular polygon are corresponding and the number of the first regular polygon and the second regular polygon is equal;
the resonance spring is arranged between the inner wall of the through hole and the two side faces corresponding to the position on the flange, and two ends of the resonance spring are respectively connected to the two side faces corresponding to the position.
Furthermore, the second elastic parts are provided with a plurality of air springs which are uniformly arranged at the bottom of the supporting part;
the air spring bottom is provided with the base, the base is used for fixed air spring.
Furthermore, the vibration motor comprises a three-phase asynchronous motor and a polarization block, and is arranged on the upper surface of the bottom plate and positioned between the two support columns; the grinding cylinder, the supporting part and the vibrating motor form a double-mass lower excitation structure.
Further, an air vent structure is arranged on an end cover on one side of the outer grinding cylinder and communicated to the inner grinding cylinder from the outer side of the outer grinding cylinder.
Furthermore, a resonance spring is arranged between the inner wall of the through hole and the side face corresponding to any pair of positions on the flange.
Further, a material to be ground and a grinding medium are filled between the outer grinding cylinder and the inner grinding cylinder, and the filling rate of the material to be ground and the grinding medium between the outer grinding cylinder and the inner grinding cylinder is 50% -90%.
Further, the grinding medium is in a shape of a cube, a sphere or a rod and is one or more of high manganese steel, high chromium steel, stainless steel, alumina, zirconia and silicon carbide.
Further, the outer grinding cylinder and the inner grinding cylinder are made of Q235 structural steel, 304 structural steel or stainless steel;
the length-diameter ratio of the outer grinding cylinder is 3.5-4.0, and the thickness of the outer grinding cylinder is 4-12 mm.
According to the technical scheme, the annular spring type resonance grinding machine disclosed by the invention has the following beneficial effects:
the annular spring type resonance mill disclosed by the invention is designed into a double-mass lower excitation structure, has a compact structure, has small dynamic load on the ground and is easy to control; the method comprises the following steps: the grinding cylinder is used for placing a material to be ground and a grinding medium; the supporting part comprises a supporting ring which is sleeved on the outer wall of the grinding cylinder at intervals; the first elastic part is provided with a plurality of resonance springs, the resonance springs are uniformly distributed between the support ring and the grinding cylinder, and two ends of each resonance spring are respectively connected to the outer walls of the support ring and the grinding cylinder; the first elastic part forms an annular spring structure on the outer wall of the grinding cylinder; the second elastic part is arranged below the supporting part and is elastically connected with the supporting part; the supporting part is provided with a vibration motor, and the vibration motor starts to excite the supporting part to vibrate on the second elastic part so as to promote the grinding cylinder to work in a resonance or near-resonance state under the action of the first elastic part; the invention reasonably designs the structure and parameters by referring to the vibration mill technology in the prior art, so that the annular spring type resonance mill works in a resonance/near resonance area, the grinding efficiency of the mill is fully improved, and the energy utilization rate of the mill is improved.
According to the invention, the first elastic part is designed into an annular spring structure on the outer wall of the grinding cylinder, and the second elastic part is designed into the air spring at the bottom of the supporting part, so that the overall mechanical property of the grinding machine is fully improved, the grinding efficiency is improved by utilizing high vibration intensity, and the phenomenon of lower grinding efficiency caused by the influence of a dead energy region of the existing vibrating grinding machine is improved. The invention has low design, manufacture, assembly and maintenance cost and high energy utilization rate, and the prepared powder has higher purity and has wide application prospect in the preparation of traditional materials, novel materials such as graphene, hexagonal boron nitride and the like.
In addition, the annular spring type resonance grinding machine developed and popularized by the invention is used as a new generation of energy-saving vibration grinding equipment, has high structural stability, can adapt to different product processing quantities by manufacturing annular spring type resonance grinding machines with different capacities, and has strong market competitiveness and high application value.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the subject matter of the present disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present disclosure, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present disclosure.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present application will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a front view in half section of an annular reed type near resonance mill of the present invention;
FIG. 2 is a side view of the annular spring type near resonance grinding machine of the present invention;
FIG. 3 is a top plan view of the annular spring type near resonance grinding machine of the present invention;
FIG. 4 is a diagonal two-dimensional view of the annular spring type near resonance grinding machine of the present invention.
In the figures, the meaning of the reference numerals is as follows:
1-outer grinding cylinder, 2-flange, 3-end cover, 4-support part, 5-resonance spring, 6-air spring, 7-base, 8-third bolt, 9-third nut, 10-third gasket, 11-vibration motor, 12-vent, 13-first bolt, 14-first nut, 15-first gasket, 16-second bolt, 17-second nut, 18-second gasket, 19-sealing ring and 20-inner grinding cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
Based on the preparation of new material nano powder by mostly adopting a traditional planetary ball mill in the prior art, the vibration mill is provided for improving the grinding efficiency and the powder particle size of the ball mill, but the vibration mill generally has the problems of small processing amount per machine, unsatisfactory process matching in large-scale industrial production, raw material pollution by impurities in the grinding process and the like. The invention relates to the existing vibrating mill technology, reasonably designs the structure and parameters, and provides the annular spring type resonant mill working in a resonant/near-resonant region, and the milling efficiency of the mill on the novel material nano powder and the energy utilization rate of the mill are obviously improved.
The ring spring type resonance grinding machine of the present invention will be further described in detail with reference to the following embodiments and drawings.
The invention discloses an annular spring type resonance grinding machine, which comprises: the grinding cylinder is used for placing a material to be ground and a grinding medium; the supporting part 4 comprises a supporting ring which is sleeved on the outer wall of the grinding cylinder at intervals; the first elastic part is provided with a plurality of resonance springs 5 which are uniformly distributed between the support ring and the grinding cylinder, and two ends of each resonance spring 5 are respectively connected with the outer walls of the support ring and the grinding cylinder; the first elastic part forms an annular spring structure on the outer wall of the grinding cylinder; a second elastic part arranged below the support part 4 and elastically connected to the support 4; wherein, the support part 4 is provided with a vibration motor 11, the vibration motor 11 starts the excitation support part 4 to vibrate on the second elastic part, so as to promote the grinding cylinder to work in a resonance or near resonance state under the action of the first elastic part.
As shown in fig. 1 to 4, the grinding cylinder includes an outer grinding cylinder 1, an inner grinding cylinder 20, a flange 2 and an end cover 3; the grinding device comprises an outer grinding cylinder 1, two supporting plates and a grinding wheel, wherein the outer grinding cylinder 1 is horizontally arranged, the two supporting plates are arranged in the outer grinding cylinder 1 at intervals in parallel, the supporting plates are perpendicular to the axial direction of the outer grinding cylinder 1, and the two supporting blocks are respectively arranged at the positions, close to the end parts, of the two sides of the outer grinding cylinder 1; the inner grinding cylinder 20 sequentially penetrates through the two support plates along the axial direction parallel to the outer grinding cylinder 1, the axial direction of the inner grinding cylinder 20 is superposed with the axial direction of the outer grinding cylinder 1, and the inner grinding cylinder 20 is completely positioned at the inner side of the outer grinding cylinder 1; the end cover 3 is convenient to use, and the outer grinding cylinder 1 and the inner grinding cylinder 20 can be synchronously sealed. In addition, as shown in the embodiment of fig. 1, the supporting plate is used for supporting and fixing the inner grinding cylinder 20 in the outer grinding cylinder 1, and some embodiments also realize the fixation of the inner grinding cylinder 20 by arranging a central rotating shaft, the invention is not limited to the supporting plate fixing mode disclosed in the embodiment, and the principle is that the displacement of the inner grinding cylinder 20 is limited; therefore, it is within the scope of the present disclosure to achieve a fixed functional configuration of the inner and outer grinding cylinders 20, 1 in a manner that limits the displacement of the inner grinding cylinder 20.
As shown in the figure, the two flanges 2 are respectively sleeved on the outer walls of the two axial ends of the outer grinding cylinder 1; one side terminal surface parallel and level of flange 2 is in the terminal surface of outer grinding barrel 1 to evenly arranged a plurality of first bolt holes on this terminal surface of flange 2. The end covers 3 comprise two parts which are respectively arranged at two axial ends of the outer grinding cylinder 1 and are of hollow round table structures with the middle parts protruding to one side; the hollow circular truncated cone structure of the end cover 3 is matched and clamped on the inner wall of the outer grinding cylinder 1, the peripheral circumference of the end cover 3 abuts against the end face of the flange 2 provided with the first bolt holes, and a plurality of second bolt holes which are equal in number and correspond to the first bolt holes in the end face are arranged on the peripheral circumference of the end cover 3; the first bolt hole is fixedly connected with the second bolt hole, so that stable connection among the outer cylinder 1, the flange 2 and the end cover 3 is realized. Specifically, the two axial ends of the outer grinding cylinder 1 are hermetically connected with the end covers 3, and the two axial ends of the inner grinding cylinder 20 are respectively hermetically connected with the circular truncated cone planes of the hollow circular truncated cone structures of the end covers 3 at the two sides, so that the technical effect of simultaneously sealing the outer grinding cylinder 1 and the inner grinding cylinder 20 by using one end cover 3 is realized.
With further reference to the embodiment shown in fig. 1, the first bolt hole and the second bolt hole are fixed by a second bolt 16, a second nut 17 and a second gasket 18 which are fixed standard parts, and the end of the inner grinding cylinder 20 and the circular truncated cone plane part of the hollow circular truncated cone structure of the end cover 3 are provided with a sealing ring 19 to realize sealing connection; when the grinding cylinder is applied, a feed inlet is arranged at the upper end of the outer grinding cylinder 1, and a discharge outlet is arranged on the end cover 3 at one side of the outer grinding cylinder 1; the feed inlet is arranged above the grinding machine, so that the ground powder is not easy to leak when the grinding machine resonates, and the discharge outlet is arranged on the side edge and is positioned close to the bottom, so that the ground powder is easy to pour out completely. In addition, the end cover 3 at one side of the outer grinding cylinder 1 is also provided with an air vent structure which is communicated from the outer side of the grinding cylinder to the inner grinding cylinder 20 and used for balancing the pressure deviation inside and outside the grinding cylinder caused by temperature rise during grinding of the grinding cylinder.
As shown in fig. 2 and fig. 3, the supporting portion 4 is an axisymmetric structure, and includes a bottom plate and two supporting columns that are spaced and symmetrically disposed on the bottom plate, and the two supporting columns are provided with a pair of through holes that have the same size and are corresponding to each other in position along the horizontal direction; the outer grinding cylinder 1 penetrates through the pair of through holes along the horizontal direction, and as shown in the figure, any through hole forms a support ring sleeved on the outer wall of the grinding cylinder. In the embodiment, the grinding cylinder is relatively fixed through two support columns, but the invention is not limited to the use of two support columns, and the grinding cylinder can also be relatively fixed through a single support column and a plurality of support columns.
As shown in fig. 4, in order to facilitate the fixing of the resonant spring 5 of the first elastic part between the support ring and the outer wall of the grinding cylinder, the cross section of the inner wall of the through hole along the horizontal direction is set to be a first regular polygon, the cross section of the outer wall of the flange 2 along the horizontal direction is set to be a second regular polygon, and the side positions of the first regular polygon and the second regular polygon are corresponding and equal in number; the resonance spring 5 is arranged between the inner wall of the through hole and the two corresponding side surfaces of the flange 2, and two ends of the resonance spring 5 are respectively connected with the two corresponding side surfaces. In the figure, a resonance spring 5 is arranged between the inner wall of the through hole and the side surface corresponding to any pair of positions on the flange 2; for example, in the embodiment shown in the drawings, the first regular polygon and the second regular polygon are regular dodecagons, and twelve resonant springs 5 are arranged between the inner wall of the through hole and the flange 2. In addition, in order to ensure the whole force balance of the grinding cylinder, the resonance springs 5 arranged between the inner wall of the through hole and the flange 2 are evenly distributed.
With further reference to the embodiments shown in fig. 1 and 4, the second elastic portion is provided as a plurality of air springs 6, and the air springs 6 are uniformly arranged at the bottom of the supporting portion 4; the bottom of the air spring 6 is provided with a base 7, and the base 7 is used for fixing the air spring 5; when the air spring is installed, the upper end of the air spring 6 is fixed to the bottom plate of the support portion 4 by using the fixed standard components, namely, the first bolt 13, the first nut 14 and the first gasket 15.
The vibration motor 11 comprises a three-phase asynchronous motor and a polarization block, and the vibration motor 11 is arranged on the upper surface of the bottom plate and positioned between the two support columns; the grinding cylinder, the supporting part 4 and the vibrating motor 11 together form a double-mass lower excitation structure of the annular spring type near-resonance grinding machine.
When the annular spring type near-resonance mill disclosed by the invention is used, a material to be ground and a grinding medium are filled between the outer grinding cylinder 1 and the inner grinding cylinder 20, and the filling rate of the material to be ground and the grinding medium between the outer grinding cylinder 1 and the inner grinding cylinder 10 is 50-90%; during grinding, the grinding medium is in a shape of a cube, a sphere or a rod and is one or more of high manganese steel, high chromium steel, stainless steel, alumina, zirconia and silicon carbide; the outer grinding cylinder 1 and the inner grinding cylinder 20 are made of Q235 structural steel, 304 structural steel or stainless steel, the length-diameter ratio of the cylinder body of the outer grinding cylinder 1 is 3.5-4.0, and the thickness of the cylinder body of the outer grinding cylinder 1 is 4-12 mm.
Example 1
The embodiment is a small and efficient annular spring type resonance grinding machine, and the designed working volume of a grinding cylinder is 50L.
The materials of the outer grinding cylinder 1 and the inner grinding cylinder 20 are Q235 structural steel, so that the strength is high, the welding performance, the plasticity and the toughness are good, and the mechanical property and the welding performance of the vibration mill can be guaranteed; its yield strength sigmas235MPa tensile strength σb＝275～410MPa。
In order to achieve the 50L designed working volume of the grinding cylinder, the diameter of the outer grinding cylinder 1 is 273mm, the wall thickness is 8mm, the length is 964mm, and the length-diameter ratio is 3.5; the total mass of the cylinder is 57.75 kg. The filling rate of the material to be ground and the grinding medium in the grinding cylinder is 80%, and the grinding medium is zirconia balls with the specification of 4mm in diameter and 6mm in diameter.
The mass of the upper mass body formed by the grinding cylinder is 220kg, and the mass of the lower mass body formed by the supporting part 4 is 178kg through structural balance design. The vibration motor 11 is a Y90S-6 type Y-shaped three-phase asynchronous motor, the rotating speed is 960r/min, and the power is 0.75 kW; the polarization block is a fan-shaped polarization block, the rotation radius of the fan-shaped polarization block is 19mm, the fan-shaped radius is 90mm, the thickness is 13.4mm, and the polarization block is of a steel structure. The air spring 6 of the second elastic part adopts 4 1B4060 type air springs, the load is 3.8kN, and the rigidity is 1610N/cm.
Example 2
The embodiment is a large efficient annular spring type near resonance grinding machine, and the designed working volume of a grinding cylinder is 500L.
304 stainless steel is selected as the material of the outer grinding cylinder 1 and the inner grinding cylinder 2, the strength is high, the welding performance is good, the service life is long, the corrosion resistance is good, in addition, the pollution to grinding materials can be reduced, dust is not easy to generate, the mechanical property and the welding performance of the vibration mill can be ensured, the yield strength sigma s is 205MPa, and the tensile strength sigma b is 520 MPa.
The designed working volume of the grinding cylinder is 500L, the diameter of the outer grinding cylinder 1 is 630mm, the wall thickness is 9mm, the length is 1823mm, and the length-diameter ratio is 3. The inner grinding cylinder 20 has the diameter of 159mm, the wall thickness of 4.5mm, the length of 1823mm and the total mass of 306.96 kg.
The filling rate of the material to be ground and the grinding medium is 80%, and the grinding medium is zirconia balls with the specification of 4mm in diameter and 6mm in diameter.
The mass of the upper plastid formed by the grinding cylinder is about 220 kg; the mass of the lower mass of the support 4 is 1000kg by the design of structural balance. The vibration motor 11 is an MVE4700/1 type vibration motor with the rotation speed of 960r/min and the power of 2.35 kW. The vibration motor 11 is a Y132S-6 type Y-type three-phase asynchronous motor, and adopts a fan-shaped polarization block, the rotation radius of the fan-shaped polarization block is 19mm, the fan-shaped radius is 140mm, the thickness is 34.7mm, and the vibration motor is of a steel structure. The air spring 6 adopts 6 2B6943 type air springs, the load is 6.0kN, and the rigidity is 730N/cm. The annular spring type resonance mill disclosed in the embodiment 1 and the embodiment 2 can be used for preparing graphene powder, expanded graphite powder is selected as a grinding material during preparation, and nano-scale ferroferric oxide is added as an auxiliary grinding aid, so that multilayer graphene can be prepared.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. An annular spring resonance mill, comprising:
the grinding cylinder is used for placing a material to be ground and a grinding medium;
the supporting part comprises a supporting ring which is sleeved on the outer wall of the grinding cylinder at intervals;
the first elastic part is provided with a plurality of resonance springs, the resonance springs are uniformly distributed between the support ring and the grinding cylinder, and two ends of each resonance spring are respectively connected to the outer walls of the support ring and the grinding cylinder; the first elastic part forms an annular spring structure on the outer wall of the grinding cylinder;
the second elastic part is arranged below the supporting part and is elastically connected with the supporting part;
the supporting part is provided with a vibration motor, and the vibration motor starts to excite the supporting part to vibrate on the second elastic part, so that the grinding cylinder works in a resonance or near-resonance state under the action of the first elastic part.
2. An annular reed resonance mill as in claim 1, wherein the grinding cylinder comprises an outer grinding cylinder, an inner grinding cylinder, an end cap and a flange;
the outer grinding cylinder is horizontally arranged, two supporting plates which are arranged at intervals are arranged in the outer grinding cylinder in parallel, the supporting plates are perpendicular to the axial direction of the outer grinding cylinder, and the two supporting blocks are respectively arranged at the positions, close to the end parts, of the two sides of the outer grinding cylinder; the inner grinding cylinder sequentially penetrates through the two supporting plates along the axial direction parallel to the outer grinding cylinder, the axial direction of the inner grinding cylinder is coincident with the axial direction of the outer grinding cylinder, and the inner grinding cylinder is completely positioned on the inner side of the outer grinding cylinder;
the two flanges are respectively sleeved on the outer walls of the two axial ends of the outer grinding cylinder; the end face of one side of the flange is flush with the end face of the outer grinding cylinder, and a plurality of first bolt holes are uniformly arranged on the end face of the flange;
the two end covers are respectively arranged at two axial ends of the outer grinding cylinder and are of hollow round table structures with the middle parts protruding towards one side; the hollow circular truncated cone structure of the end cover is matched and clamped with the inner wall of the outer grinding cylinder, the peripheral circumference of the end cover abuts against the end face of the flange provided with the first bolt holes, and a plurality of second bolt holes which are equal to the first bolt holes in number and correspond to the first bolt holes in position are arranged on the peripheral circumference of the end cover; the first bolt hole and the second bolt hole are fixedly connected;
the axial two ends of the outer grinding cylinder are hermetically connected with the end covers, and the axial two ends of the inner grinding cylinder are hermetically connected with the circular truncated cone planes of the hollow circular truncated cone structures of the end covers at the two sides respectively;
the upper end of the outer grinding cylinder is provided with a feed inlet, and a discharge outlet is formed in an end cover on one side of the outer grinding cylinder.
3. The annular spring type resonance grinding machine is characterized in that the supporting part is arranged in an axisymmetric structure and comprises a bottom plate and two supporting columns which are arranged on the bottom plate at intervals and symmetrically, and the two supporting columns are provided with a pair of through holes which are equal in size and correspond in position along the horizontal direction;
the outer grinding cylinder penetrates through the pair of through holes along the horizontal direction, and any one through hole forms a support ring sleeved on the outer wall of the grinding cylinder;
the cross section of the inner wall of the through hole along the horizontal direction is set to be a first regular polygon, the cross section of the outer wall of the flange along the horizontal direction is set to be a second regular polygon, and the side positions of the first regular polygon and the second regular polygon are corresponding and the number of the first regular polygon and the second regular polygon is equal;
the resonance spring is arranged between the inner wall of the through hole and the two side faces corresponding to the position on the flange, and two ends of the resonance spring are respectively connected to the two side faces corresponding to the position.
4. The annular spring type resonance grinding machine according to claim 1, wherein the second elastic part is provided with a plurality of air springs which are uniformly arranged at the bottom of the supporting part;
the air spring bottom is provided with the base, the base is used for fixed air spring.
5. The annular spring type resonance grinding machine according to claim 3, wherein the vibration motor comprises a three-phase asynchronous motor and a polarizing block, and is arranged on the upper surface of the base plate and between two supporting columns; the grinding cylinder, the supporting part and the vibrating motor form a double-mass lower excitation structure.
6. The annular spring type resonance grinding machine as claimed in claim 2, wherein an end cover at one side of the outer grinding cylinder is provided with a vent structure which is communicated from the outer side of the grinding cylinder to the inner grinding cylinder.
7. An annular spring type resonance grinding machine according to claim 3, wherein a resonance spring is arranged between the inner wall of the through hole and the side face corresponding to any pair of positions on the flange.
8. The annular spring type resonance grinding machine as claimed in claim 2, wherein the material to be ground and the grinding media are filled between the outer grinding cylinder and the inner grinding cylinder, and the filling rate of the material to be ground and the grinding media between the outer grinding cylinder and the inner grinding cylinder is 50-90%.
9. The ring spring resonance mill of claim 1, wherein the grinding media are in the shape of a cube, sphere or rod, and are one or more of high manganese steel, high chromium steel, stainless steel, alumina, zirconia, silicon carbide.
10. The annular spring type resonance grinding machine as claimed in claim 2, wherein the material of the outer grinding cylinder and the inner grinding cylinder is Q235 structural steel, 304 structural steel or stainless steel;
the length-diameter ratio of the outer grinding cylinder is 3.5-4.0, and the thickness of the outer grinding cylinder is 4-12 mm.
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| CN2020112297809 | 2020-11-06 | ||
| CN202011229780 | 2020-11-06 |
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