WO2013049977A1 - 粉碎与整形的装置和方法 - Google Patents
粉碎与整形的装置和方法 Download PDFInfo
- Publication number
- WO2013049977A1 WO2013049977A1 PCT/CN2012/071294 CN2012071294W WO2013049977A1 WO 2013049977 A1 WO2013049977 A1 WO 2013049977A1 CN 2012071294 W CN2012071294 W CN 2012071294W WO 2013049977 A1 WO2013049977 A1 WO 2013049977A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cavity
- shaping
- powder particles
- pulverizing
- piston
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
Definitions
- the invention relates to material shaping processing, in particular to a device and a method for pulverizing and shaping. Background technique
- Material pulverization and grinding is an important part of powder engineering. It is widely used in various fields of the national economy, and material modification processing can optimize material properties or achieve specific functions.
- the shape control of the material particles is the processing of the desired surface of the particle surface to achieve the special function of the monomer or the whole, which is an intermediate link to improve the final performance of some products.
- Relative spheroidization can improve the tap density, packing density and fluidity of the powder.
- the spheroidization of cement powder particles can improve the performance of cement.
- the spheroidization of metal ink particles can increase the shininess, improve the printing quality, and spheroidize copper powder.
- Graphite and tin powder show superiority in their specific application areas.
- the traditional methods of mechanical shaping usually use rolling, rolling, ball milling, and vibration grinding (ie, vibration grinding).
- Rolling is to put the powder into an annular groove, and the driven powder is rolled around the central axis by the driven circular pressure roller.
- the roller is similar to the roller, but the material falls from the height between the two rollers. And withstand double roller pressure.
- Rolling is the pulverization and shaping of the rolls in which the powder agglomerates fall into parallel and have a certain gap.
- the ball mill mixes the powder with a hard and wear-resistant grinding ball in a certain proportion and then puts it into the drum.
- the drum rotates along the shaft, and the grinding ball in the drum is lifted and then falls during the rotation of the barrel, thereby The powder is subjected to impact and forces and friction between the particles.
- the vibrating method is similar to the ball milling method. The difference is that the vibrating barrel reciprocates at a certain frequency in a single direction, so that the grinding ball impacts and grinds the material.
- Tsinghua University which describes a method and equipment for spheroidizing or morphologically controlling powder by means of high-speed hitting and shearing.
- the mixture of grinding media has a portion in contact with air at an effective stage of processing, i.e., there is an "open” or “partially open” condition in which pressure or impact forces are released or partially released during the action of the material.
- relatively “softer” or “harder” materials, such as tough metal particles it is difficult to achieve the desired effect and desired efficiency due to the limited strength and controllability of the processing.
- both the non-circulating ball grinding and the vibrating grinding have the problem of separation of the grinding ball and the processed powder, and as the grinding ball is continuously consumed, the processing strength will change, which brings uncertainty to the processing process, and also has Centrifugal force is used to increase the grinding of the machining force, but this also has the cost of paying and the limitation of the final effect ratio.
- the problem of noise, energy consumption and waste of the movement of the equipment body and the grinding ball are insurmountable. Among these defects, the most important are processing controllability and energy consumption. Summary of the invention
- the object of the present invention is to provide a device and a method for pulverizing and shaping, which have strong controllability of material processing strength, stable processing strength and high efficiency.
- the present invention adopts the following technical solutions:
- a pulverizing and shaping device characterized in that it comprises a cavity which can be changed by an external force between a plurality of forms, the cavity being made during a change of morphology
- the inner powder particles are shaped by the force, and the cavity has a passage for feeding in and/or out of the material during the shaping process.
- a pulverization and shaping method characterized in that it comprises the following steps:
- step b applying an external force to the cavity to repeatedly change between the plurality of forms such that the powder particles inside the cavity are shaped by the force, and the cavity is allowed during the shaping process or It is not allowed to enter and/or exit materials.
- the material is allowed to be discharged during the shaping process, and the shaped powder particles are filtered out of the cavity through the discharge channel, and are maintained by the feed channel feed and/or the shape change of the cavity.
- Sufficient pressure in the chamber; or, allowing for feeding and discharging during shaping, and partial shaping The good powder particles are discharged from the outside of the chamber through the discharge channel for predetermined treatment, and are processed into the cavity through the feed channel for cyclic shaping after the treatment.
- the force may be caused by impact, extrusion, between the processed powder particles or between the processed powder particles and the shaped auxiliary material or between the processed powder particles and the cavity.
- Friction or shearing action covers the effects of various common concepts such as “collision”, “rolling”, “ ⁇ ”, etc.
- the change in the shape of the cavity is partial or integral, the process of change A gradual or abrupt process with or without vibration.
- the deformation of the cavity typically by controlling the combined action of the components constituting the cavity, changes the relative position of the cavity space and the powder particles therein, so that the powder particles in the cavity are mutually Between extrusion and other effects.
- the particles of the processed material can be subjected to omnidirectional impact, extrusion, friction, rolling, boring, shearing, etc. in the cavity, the edges, burrs and the like of the surface of the particles can be removed, thereby pulverizing, shaping or pulverizing the powder particles.
- the purpose of spheroidization is to effectively control the morphology of powder particles.
- the invention can maintain the original properties of the material to be processed, and at the same time better overcome the disadvantages of other powder particle treatment methods such as rolling, ball milling and vibration grinding methods, and improve the controllability of the treatment, for example, Control of the strength of extrusion, impact, friction, shearing, etc., which is reflected in the control of the influencing factors of the processing effect.
- the cavity has a passage for feeding and/or discharging during processing, material can be introduced and/or discharged during the process, that is, during the morphological change of the cavity, thereby achieving more efficient filling of the material particles filled therein.
- the purpose of crushing and shaping For example, if material is allowed to be processed during processing, the new material particles that affect the efficiency of shaping can be quickly eliminated during the processing to improve the processing efficiency. On the other hand, it is also conducive to the formation of efficient continuous flow or cycle operations.
- the processed or partially processed material is sent to the outside of the cavity, and other processing can be carried out, and the cavity can be used as the case may be.
- Part of the processed material after in vitro treatment is returned to the cavity through the channel for processing, forming a cycle operation.
- the use of the discharge channel tends to reduce the pressure in the non-cavity, it is entirely possible to compensate for this by maintaining the force in the cavity by controlling the action of the assembly and/or simultaneously increasing the feed.
- the invention has strong controllability and strong adaptability to the object to be processed (for particle size, hardness, etc.), such as applying vibration changes to the component to enhance the impact and changing the shape of the component, so that the processing can be selectively performed.
- the equipment materials available for the present invention are widely selected and economical, and can achieve automated scale production while achieving a predetermined processing target.
- the invention can be used as a better choice for shaping or spheroidizing the powder particles, and can also effectively perform forced pulverization or deep grinding of the powder.
- the features and technical advantages of the present invention are set forth in the ⁇ RTIgt; Other features and advantages of the invention will be described below. Those skilled in the art will appreciate that the disclosed concepts and embodiments can be readily utilized as a basis for modifying or designing other structures to accomplish the same objectives of the invention.
- FIGS. 2a to 2c are schematic views showing the structure and operation mode of an embodiment of the pulverizing and shaping device of the present invention
- FIGS. 2a to 2c are schematic views showing the structure and operation mode of another embodiment of the pulverizing and shaping device of the present invention
- 3 is a schematic structural view of still another embodiment of the pulverizing and shaping device of the present invention
- 4 is a schematic view showing the structure of another embodiment of the pulverizing and shaping device of the present invention.
- FIG. 1a shows the basic principle of the invention, as shown in Figures la-lc.
- the pulverizing and shaping device employs an ideal elastic cavity
- the powder particles are wrapped in the elastic cavity.
- the elastic cavity will produce lateral horizontal deformation (even expansion), from a spherical shape to an ellipsoidal shape as shown in Figure lb.
- Figure lc when the external force is removed, the elastic cavity returns to its original shape.
- the external force shown to cause deformation of the elastic cavity is pressure, but the external force is not limited to the pressure, and for example, the elastic cavity may be pressed to deform it.
- the powder particles in different parts of the cavity will be squeezed in multiple directions; at the same time, due to the deformation (or volume) of the cavity, the intergranular particles between adjacent powders will occur. Squeeze, friction, and shear are generated by relative movement, although the degree of extrusion and friction differs depending on the difference in the position of the cavity (three points A, B, and C in Figures l a , lb, and lc).
- the treatment effect of the powder particles depends on the elastic encapsulation force of the outer layer and the deformation amplitude, speed, etc.
- the present invention can be implemented in an embodiment different from the above-described elastic cavity if the following conditions are satisfied:
- the component material has reliability and durability with respect to the material to be processed (powder particles or a mixture with other media);
- a typical comminuting and shaping device can include a plurality of independently actuatable components that form a cavity, control the combined action of several components, will change the space of the material being processed in the cavity, and fill the powder particles in the cavity (or The mixture with the auxiliary medium) is subjected to a multi-directional force.
- controlling the action and state of the components in contact with the powder particles can cause the powder particles in the cavity to be squeezed, rolled, rubbed, sheared, smashed, vibrated, etc., thereby removing the edge and burrs of the particles, and achieving the right
- the purpose of pulverizing, shaping or spheroidizing the powder particles, in the process, the material to be treated also acts as a medium for transmitting force.
- the cavity has a passage for feeding and discharging during processing, and the material can be in and out during the process of changing the shape of the cavity, so as to achieve more efficient pulverization and shaping of the material particles filled therein. .
- the volume can be reduced by the action of the feed (in this case, the passage of the feed) and/or the assembly to compensate for this. Therefore, during the processing, the material can enter and exit, and even allow the material in the cavity to be unclosed and overflow, and the pressure is leaked, as long as the volume of the cavity containing the material to be processed is controlledly reduced and has a tendency to shrink, or Changes in the material itself, such as the precipitation of new materials or their own volume expansion, or the above situation occurs at the same time, can maintain the pressure required for processing in the cavity, to achieve the purpose of effective processing and shaping.
- the number of components in contact with the powder particles can be varied and their state controlled, such as by controlling the forces on the components and the direction of movement, speed of movement, or deformation of the components themselves. And/or vibration, the size and shape of the space occupied by the powder particles in the cavity, and the relative position between the powder particles are changed, so that continuous relative movement and interaction between the particles occurs.
- the forces on these components are controllable preset external forces that allow the powder particles to be adjusted to control the strength of the process, including the mode of action, amplitude, frequency of action, magnitude and duration of force, etc. .
- a mutation method may be employed, which may be a method of causing the powder particles to vibrate or a non-vibration method.
- a mutation method in addition to selecting the component structure and mode of operation constituting the cavity, it is also possible to change the discharge damping by controlling the size of the discharge channel, adding a cavity filtering separation member at the discharge port, and the like. Aspects to achieve the intensity control of processing.
- additional agitation means within the chamber are preferred which enhances consistency of processing of the powder particles within the chamber.
- the cavity has a piston structure extending from the exterior to the interior thereof, the piston structure including at least one independent piston.
- the cavity includes a cylinder 100, and first to second piston assemblies 101-103 that are piston-mounted on the cylinder 100, The first piston assembly 101 is positioned to move in a first direction, the piston movement of the second piston assembly 102 is positioned in a second direction, the first direction and the second direction are substantially parallel, and the cavity is further There is a discharge opening and a matching discharge door.
- the discharge door is a third piston assembly 103, and more preferably, the third piston assembly 103 has a tapered front end toward the discharge port so as to be able to select an open or partially open corresponding
- the discharge port is closed or closed.
- the cavity further includes an agitator 104 mounted to the cavity.
- the components have smooth contact surfaces that remain rigid throughout the processing cycle, and the first to second piston assemblies 101-102 and the agitator 104 that act as pistons remain sealed to the cavity.
- the material particles are filled in the cavity, and the cavity maintains a certain pressure greater than atmospheric pressure, preferably no air is present in the cavity.
- the pressures P1, P2 on the two piston assemblies are changed such that the upward force acting on the first piston assembly 101 by the material particles is greater than the first piston assembly 101.
- the first piston assembly 101 is lifted outward.
- a processing cycle is completed.
- the powder particles in the cavity are also subjected to the effects including the pressing force, the shearing force, and the frictional force.
- the material particles may be stirred simultaneously using the agitator 104 during the above treatment.
- the cavity is provided with a variable "elasticity" during which the actual change in the cavity space formed by the components containing the material being processed occurs.
- the powder particles in the chamber are forced to flow, so that the material to be processed is subjected to shaping under controlled pressure. It should be noted that although the ultimate object of processing and processing is powder particle monomer, the processing is actually directly applied to these mutually contacting monomer powder particles or groups or partial populations composed of other media.
- Effective action means that the processed powder particles are subjected to other forces than gravity, resulting in the effect of shaping, rubbing, shearing, rolling, etc. to achieve a shaping effect.
- the discharge port size can be adjusted by controlling the third piston assembly 103 to be inserted into or out of the discharge port, and the processed or partially processed or unneeded materials can be selectively discharged in time.
- the chamber may also have a feed opening that can be used to feed during processing. In particular, it is possible to simultaneously feed from the feed port during discharge during processing, which maintains the pressure in the chamber in cooperation with the first and second piston assemblies 101, 102 to maintain the processing force.
- the feed port and the discharge port can be connected to form a closed loop together with the circulating portion forming the outside of the chamber, and other processes can be added to the circulation portion outside the chamber to enhance the utility of the device.
- the difference from the embodiment shown in Fig. 2 is that only one piston assembly is used for the purpose of treating the material particles. For comminuting and shaping devices, it is also feasible to control the piston assembly to perform piston movement within the chamber.
- the vibration component can be superimposed on the basis of the external force that drives the piston assembly to perform the piston movement, and at the same time, the material particles are uniformly shaped by using the cavity stirring or the extracorporeal circulation stirring.
- the cavity is further provided with a feed port, and the feed port can be equipped with a unidirectional width.
- a piston 105 is disposed inside the cavity, which is similar in shape to FIG. Piston configured at the discharge port. The feed port is available for feeding during processing.
- the vibration action can be superimposed on the basis of the force of impact, extrusion, etc. transmitted by the assembly.
- the comminuting and shaping device may be provided with a cooling device to dissipate the frictional heat without altering the properties of the processed powder.
- the comminuting and shaping device may be provided with a thermal insulation device to operate in a warmed state, which is suitable for powders that need to be processed at a certain temperature.
- the design embodying the principles of the present invention is not limited to the specific embodiments described above, such as increasing the number of components and changing the size, shape, and operation of each component, including vibration, rotation, deformation of the component itself, etc., to increase relative movement between the powder particles in the cavity.
- the piston assembly itself is not elastic, and an assembly provided with an elastic member may be used to make the assembly itself elastic.
- an elastic force of the elastic member it is also possible to apply a pulling force from the outside instead of the pressure, and it is also possible to change the cavity between a plurality of forms.
- a powder particle shaping method comprising the steps of: a. filling a powder particle to be processed into a cavity, the cavity having a material for feeding in and/or out during the shaping process aisle;
- the material is allowed to be discharged during the shaping process, and the shaped powder particles are filtered out of the cavity through the discharge channel, and are fed through the feed channel and/or the shape of the cavity.
- the change is to maintain sufficient pressure in the cavity; or, the feeding and discharging are allowed in the shaping process, and the partially shaped powder particles are discharged out of the cavity through the discharge channel for predetermined treatment, and are sent through the feeding channel after the treatment Into the cavity for cyclic shaping.
- the cavity employed has a piston structure extending from the exterior to the interior thereof, the piston structure comprising at least two independently acting piston assemblies, said step b
- the method includes: applying different pressures to the at least two independent pistons while maintaining the internal pressure of the cavity, such that a part of the piston is pressed into the cavity and the other part is pushed outward; Then, on the contrary, the cycle is continued for several times until the shaping requirements of the powder particles are reached.
- the apparatus and method of the present invention are suitable for shaping and pulverizing a plurality of powders, and can also be used for pulverizing and further shaping the dispersed agglomerates.
- the present invention has a better treatment effect on powder particles having less elasticity and greater rigidity than powder particles having a relatively large elasticity.
Abstract
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Priority Applications (1)
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CN201280049514.5A CN103857470B (zh) | 2011-10-08 | 2012-02-17 | 粉碎与整形的装置和方法 |
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CN201110294947.4 | 2011-10-08 | ||
CN 201110294947 CN103028478A (zh) | 2011-10-08 | 2011-10-08 | 粉体颗粒整形的方法和装置 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05208186A (ja) * | 1992-01-30 | 1993-08-20 | Matsushita Electric Ind Co Ltd | 生ゴミ処理装置 |
JP2003181320A (ja) * | 2001-12-18 | 2003-07-02 | Kawata Mfg Co Ltd | 造粒装置 |
CN1621155A (zh) * | 2003-11-24 | 2005-06-01 | 霍夫曼-拉罗奇有限公司 | 粉碎团块,特别是通过容器中的活塞运动破碎微粒的装置 |
CN2734333Y (zh) * | 2004-05-20 | 2005-10-19 | 杨庆友 | 钉钎式破碎机 |
CN201342363Y (zh) * | 2009-01-12 | 2009-11-11 | 李�杰 | 一种插接式药片粉碎研钵 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN201264098Y (zh) * | 2008-10-06 | 2009-07-01 | 洛阳栾川钼业集团股份有限公司 | 冷等静压机湿袋成型软模装模封口胶盖 |
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2011
- 2011-10-08 CN CN 201110294947 patent/CN103028478A/zh active Pending
-
2012
- 2012-02-17 WO PCT/CN2012/071294 patent/WO2013049977A1/zh active Application Filing
- 2012-02-17 CN CN201280049514.5A patent/CN103857470B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05208186A (ja) * | 1992-01-30 | 1993-08-20 | Matsushita Electric Ind Co Ltd | 生ゴミ処理装置 |
JP2003181320A (ja) * | 2001-12-18 | 2003-07-02 | Kawata Mfg Co Ltd | 造粒装置 |
CN1621155A (zh) * | 2003-11-24 | 2005-06-01 | 霍夫曼-拉罗奇有限公司 | 粉碎团块,特别是通过容器中的活塞运动破碎微粒的装置 |
CN2734333Y (zh) * | 2004-05-20 | 2005-10-19 | 杨庆友 | 钉钎式破碎机 |
CN201342363Y (zh) * | 2009-01-12 | 2009-11-11 | 李�杰 | 一种插接式药片粉碎研钵 |
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Publication number | Publication date |
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CN103857470A (zh) | 2014-06-11 |
CN103028478A (zh) | 2013-04-10 |
CN103857470B (zh) | 2015-07-29 |
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