CN119703097A - Metal powder production equipment - Google Patents
Metal powder production equipment Download PDFInfo
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- CN119703097A CN119703097A CN202510244984.6A CN202510244984A CN119703097A CN 119703097 A CN119703097 A CN 119703097A CN 202510244984 A CN202510244984 A CN 202510244984A CN 119703097 A CN119703097 A CN 119703097A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
本发明涉及一种金属粉体生产设备，涉及金属粉体生产领域，包括内筒和外筒。内筒设置在外筒内，且内筒和外筒之间能够相对转动，内筒与外筒之间形成外研磨腔。内筒内设置两个隔板，将内筒分隔成一个初级研磨腔和两个次级研磨腔，两个次级研磨腔分设于初级研磨腔的两侧。两个隔板上开设第一筛孔，使得初级研磨腔同两个次级研磨腔连通。两个次级研磨腔的侧壁开设有第二筛孔，使得两个次级研磨腔均与外研磨腔连通。第一筛孔的孔径大于第二筛孔的孔径。初级研磨腔、次级研磨腔和外研磨腔内均设置有研磨介质，且初级研磨腔、次级研磨腔和外研磨腔内的介质的直径依次变小。本发明提高了粉体制备的效果和效率，很好的解决了现有技术存在的问题。
The invention relates to a metal powder production device, and relates to the field of metal powder production, comprising an inner cylinder and an outer cylinder. The inner cylinder is arranged in the outer cylinder, and the inner cylinder and the outer cylinder can rotate relative to each other, and an outer grinding chamber is formed between the inner cylinder and the outer cylinder. Two partitions are arranged in the inner cylinder, and the inner cylinder is divided into a primary grinding chamber and two secondary grinding chambers, and the two secondary grinding chambers are arranged on both sides of the primary grinding chamber. A first sieve hole is provided on the two partitions, so that the primary grinding chamber is connected with the two secondary grinding chambers. A second sieve hole is provided on the side wall of the two secondary grinding chambers, so that the two secondary grinding chambers are connected with the outer grinding chamber. The aperture of the first sieve hole is larger than the aperture of the second sieve hole. Grinding media are arranged in the primary grinding chamber, the secondary grinding chamber and the outer grinding chamber, and the diameters of the media in the primary grinding chamber, the secondary grinding chamber and the outer grinding chamber are successively reduced. The invention improves the effect and efficiency of powder preparation, and well solves the problems existing in the prior art.
Description
Technical Field
The invention relates to the field of metal powder production, in particular to metal powder production equipment.
Background
The metal powder is generally an important raw material for powder metallurgy, and the preparation method of the metal powder is various and mainly comprises a chemical method, a physical method and the like, wherein the physical method comprises a high-energy ball milling method, and the high-energy ball milling method uses a ball mill.
The ball mill generally comprises a ball mill cylinder in which a grinding medium is placed, and then the materials placed in the ball mill cylinder are crushed, ground, and the like. The existing ball mill is generally used in two modes, one mode is that when materials with different sizes are required to be ground, grinding media with different sizes are selected, for example, materials with larger particle sizes are required to be ground, grinding media with larger sizes can be selected, and materials with smaller sizes are required to be ground, and grinding media with smaller sizes are selected. However, such a method has a problem that the large-sized grinding media have a good crushing effect, but cannot be finely ground, while the smaller-sized grinding media have a poor crushing effect, although they can be finely ground. Therefore, when the materials with smaller sizes are required to be ground, but the size of the initial materials before grinding is larger, the grinding can be realized only by replacing grinding media with different sizes and even replacing different equipment and crushing, grinding and the like for multiple times and multiple levels, and the production efficiency is greatly reduced. The other use mode is that grinding media with different sizes are directly put into the same ball mill barrel, then the materials put into the ball mill barrel are subjected to the procedures of indiscriminate crushing, fine grinding and the like, namely the crushing function is realized through the grinding media with large size, and the fine grinding function is realized through the grinding media with small size. However, in the method, as grinding media with different sizes all work in the same ball mill barrel, the use proportion of the grinding media with different sizes also can influence the final grinding effect, and too many grinding media with large sizes have good crushing effect, but the refining grinding effect is poor, so that the final yield is influenced. While the grinding media with small size are too much, although the refining grinding effect is good, the crushing effect is poor, and the production efficiency is greatly influenced. Therefore, the use proportion of grinding media with different sizes is strictly limited according to different materials in some cases so as to balance the requirements between crushing and refining grinding as much as possible, but the grinding media with different sizes are inevitably interfered with each other when playing respective functions, so that the respective functions are affected, the grinding media with each size cannot fully play respective functions, the production efficiency is reduced, and the grinding effect is affected.
The patent application with publication number CN114309626A discloses a high-efficiency ball mill for powder metallurgy, which adopts a ball milling mode that materials are unified in a common ball milling cylinder and steel balls with different sizes are used as media for production, and the problems in the prior art are not solved.
Therefore, it is necessary to solve the above problems by a metal powder production apparatus.
Disclosure of Invention
The technical problems to be solved are as follows:
The invention aims to provide metal powder production equipment so as to solve the problems of low production efficiency and unsatisfactory grinding effect in the prior art.
The technical scheme is as follows:
in order to achieve the above purpose, the present invention provides the following technical solutions:
The invention provides metal powder production equipment, which comprises an inner cylinder and an outer cylinder. The inner cylinder is arranged in the outer cylinder, the inner cylinder and the outer cylinder can rotate relatively, and an outer grinding cavity is formed between the inner cylinder and the outer cylinder. The inner cylinder is internally provided with two clapboards, the inner cylinder is divided into a primary grinding cavity and two secondary grinding cavities, and the two secondary grinding cavities are respectively arranged at two sides of the primary grinding cavity. The two partition boards are provided with first sieve holes, so that the primary grinding cavity is communicated with the two secondary grinding cavities. The second sieve mesh has been seted up to the lateral wall in two secondary grinding chambeies for two secondary grinding chambeies all communicate with outer grinding chamber. The aperture of the first sieve aperture is larger than that of the second sieve aperture. Grinding media are arranged in the primary grinding cavity, the secondary grinding cavity and the outer grinding cavity, and the diameters of the grinding media in the primary grinding cavity, the secondary grinding cavity and the outer grinding cavity are sequentially reduced.
Preferably, the radial cross section of the outer cylinder is circular, the radial cross section of the inner cylinder is elliptical, and the inner cylinder is coaxial with the outer cylinder. And a grinding gap is formed between the long shaft surface of the inner cylinder corresponding to the long shaft and the inner wall of the outer cylinder.
Preferably, the long shaft surface is provided with an extension cambered surface, and a grinding gap is formed between the extension cambered surface and the inner wall of the outer cylinder.
Preferably, the device further comprises a base. Two brackets are fixedly arranged on the base. The two ends of the outer cylinder are arranged on the two brackets. The bracket is provided with a driving component for driving the inner cylinder and the outer cylinder to rotate relatively.
Preferably, a hollow tube is rotatably arranged on each of the two brackets, and the hollow tube is coaxially connected with the inner cylinder and is communicated with the primary grinding cavity.
Preferably, the drive assembly includes a gear set and a motor. The gear set is positioned at one end of the outer barrel and comprises a first gear, a second gear and a gear ring. The first gear is sleeved on the hollow pipe and fixedly connected with the hollow pipe. The second gear engages the first gear. The gear ring is sleeved outside the first gear and the second gear and meshed with the second gear, and the gear ring is fixedly connected with the outer cylinder. The motor is used for driving the first gear to rotate.
Preferably, a driven belt pulley is fixedly sleeved on the hollow tube at the other end of the outer cylinder, and the driven belt pulley is connected with the driving belt pulley through a driving belt. The driving belt wheel is connected with the motor.
Preferably, a first non-return spring plate is arranged on the partition board and corresponds to the first sieve holes. The first non-return shell fragment sets up in being located one side in the secondary grinding chamber, and first non-return shell fragment extends to first sieve mesh direction to shelter from first sieve mesh.
Preferably, the outer side wall of the inner cylinder is provided with a second non-return spring plate. The second non-return shell fragment corresponds the second sieve mesh setting, and extends to the second sieve mesh to shelter from the second sieve mesh.
Preferably, the two secondary grinding chambers are symmetrically arranged.
The beneficial effects are that:
The invention provides metal powder production equipment, which divides an inner cylinder into three cavities, namely a primary grinding cavity and two secondary grinding cavities, and simultaneously an outer grinding cavity is formed between the inner cylinder and an outer cylinder, and grinding media in each grinding cavity have the same specification, so that the technical problem of mutual interference of the grinding media with different sizes is well avoided. And the built-in grinding media are subjected to specification distinction aiming at different grinding cavities, namely the diameters of the grinding media in the primary grinding cavity, the secondary grinding cavity and the outer grinding cavity are sequentially reduced, so that the purpose of step-by-step fine grinding is realized. Specifically, the primary grinding medium in the primary grinding cavity is larger than the secondary grinding medium in the secondary grinding cavity, and the secondary grinding medium in the secondary grinding cavity is larger than the outer grinding medium in the outer grinding cavity, so that the preparation process of the metal powder is divided step by step, step by step and towards the gradually refined grinding direction. The primary grinding medium, the secondary grinding medium and the outer grinding medium all independently play respective roles, mutual interference among the grinding media with different sizes cannot occur, the contact efficiency of the grinding media and materials with corresponding sizes is improved, and further the preparation efficiency of metal powder is improved.
In addition, a grinding gap is arranged between the inner cylinder and the outer cylinder, so that the inner cylinder and the outer cylinder can be grinded greatly through relative movement, and the grinding effect and efficiency are improved.
In summary, the invention not only realizes the purpose of step-by-step refined grinding in the same equipment, but also strictly distinguishes grinding media with different sizes, does not interfere with each other, improves the effect and efficiency of powder preparation, and well solves the problems existing in the prior art.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A of FIG. 1;
FIG. 3 is a schematic perspective view of another angle of the present invention;
FIG. 4 is a perspective cross-sectional view showing the mating relationship of the inner barrel and the outer barrel;
FIG. 5 is a schematic view of a three-dimensional structure in half-section of the present invention;
FIG. 6 is an enlarged schematic view of the invention at B of FIG. 5;
FIG. 7 shows the present invention an end schematic view of the outer cylinder;
FIG. 8 is a perspective view of one form of the inner barrel of the present invention;
FIG. 9 is a schematic diagram showing the internal arrangement of the inner and outer drums;
FIG. 10 is a schematic view of the structure of the preferred embodiment of the present invention;
FIG. 11 is a state diagram rotated 90 degrees from FIG. 10;
FIG. 12 is a simplified schematic diagram of FIG. 10;
FIG. 13 is an enlarged view of portion C of FIG. 12;
FIG. 14 is a schematic view of an optimized structure of the first backstop spring;
FIG. 15 is an enlarged view of the portion D of FIG. 12;
FIG. 16 is a schematic view of another embodiment of a first backstop spring and a second backstop spring;
FIG. 17 is a schematic view of the rotary state of FIG. 16;
FIG. 18 is an enlarged view of the portion of FIG. 16E;
FIG. 19 is a cross-sectional view of one embodiment of the first backstop shell fragment of FIG. 16;
FIG. 20 is a perspective view of a swivel sleeve;
FIG. 21 is a schematic view of another form of inner barrel;
FIG. 22 is a schematic view of yet another form of an inner barrel;
FIG. 23 is a schematic view showing the relationship of the major and minor axes of the racetrack shaped inner barrel.
In the figure, 1, a base, 2, a supporting leg, 3, a bracket, 4, a hollow pipe, 5, an inner cylinder, 501, a primary grinding cavity, 502, a secondary grinding cavity, 503, a long shaft surface of the inner cylinder, 504, a grinding gap, 505, an outer arc surface, 506, a horn-shaped opening, 6, a baffle, 7, a second sieve opening, 8, a primary grinding medium, 9, a secondary grinding medium, 10, an outer cylinder, 101, an outer grinding cavity, 11, an outer grinding medium, 12, a first gear, 13, a gear shaft, 14, a second gear, 15, a gear ring, 16, a motor, 17, a belt, 18, a driven pulley, 19, a sealing cover, 20, an air pipe, 21, a sealing door, 22, a first sieve opening, 23, a driving pulley, 24, a first non-return spring plate, 241, an opening of the first non-return spring plate, 242, a first bulge, 243, a first rotating shaft, 244, a rotating shaft sleeve, 2441, an opening of the rotating shaft sleeve, an upper edge of the 2442, 25, a second non-return spring plate, 251, an opening of the second non-return plate, the second rotating shaft, 26 and a filter plate.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein references herein to "upper", "lower", etc. are made to the orientation of fig. 4.
The invention provides metal powder production equipment, which comprises an inner cylinder and an outer cylinder. The inner cylinder is arranged in the outer cylinder, the inner cylinder and the outer cylinder can rotate relatively, and an outer grinding cavity is formed between the inner cylinder and the outer cylinder. The inner cylinder is internally provided with two clapboards, the inner cylinder is divided into a primary grinding cavity and two secondary grinding cavities, and the two secondary grinding cavities are respectively arranged at two sides of the primary grinding cavity. The two partition boards are provided with first sieve holes, so that the primary grinding cavity is communicated with the two secondary grinding cavities. The second sieve mesh has been seted up to the lateral wall in two secondary grinding chambeies for two secondary grinding chambeies all communicate with outer grinding chamber. The aperture of the first sieve aperture is larger than that of the second sieve aperture. Grinding media are arranged in the primary grinding cavity, the secondary grinding cavity and the outer grinding cavity, and the diameters of the media in the primary grinding cavity, the secondary grinding cavity and the outer grinding cavity are sequentially reduced. The invention improves the effect and efficiency of powder preparation and well solves the problems existing in the prior art.
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1:
Referring to fig. 4, 9 to 12, 16, 17, 21, 22, etc., the present invention provides a metal powder production apparatus comprising an inner cylinder 5 and an outer cylinder 10. The inner tube 5 is disposed in the outer tube 10, and the inner tube 5 and the outer tube 10 can rotate relatively, wherein the relative rotation may be that the inner tube 5 and the outer tube 10 rotate simultaneously, but the rotation directions are opposite, or that the outer tube 10 is fixed, and the inner tube 5 rotates relative to the outer tube 10. In the present embodiment, the description will be mainly made with respect to the form of "the inner cylinder 5 and the outer cylinder 10 rotate simultaneously but in opposite directions". An outer grinding chamber 101 is formed between the inner cylinder 5 and the outer cylinder 10.
Further, two partition plates 6 are disposed in the inner cylinder 5, the two partition plates 6 divide the inner cylinder 5 into a primary grinding chamber 501 and two secondary grinding chambers 502, and the two secondary grinding chambers 502 are disposed on two sides of the primary grinding chamber 501. The invention utilizes two cylinder structures such as the inner cylinder 5, the outer cylinder 10 and the like to form three levels of grinding cavities such as a primary grinding cavity 501, a secondary grinding cavity 502, an outer grinding cavity 101 and the like, and can well realize the purpose of graded grinding.
Further, the two partitions 6 may be disposed in parallel, and the two secondary grinding chambers 502 may be disposed symmetrically, which is described specifically herein, referring to fig. 9, if a horizontal plane is perpendicular to the center of the inner cylinder 5 in fig. 9, the two secondary grinding chambers 502 are symmetrical with respect to the horizontal plane, and the two partitions 6 are also disposed parallel to the horizontal plane, so as to make the rotation of the inner cylinder 5 more balanced and stable.
The two partition boards 6 are provided with first sieve holes 22, and the primary grinding cavity 501 and the two secondary grinding cavities 502 are communicated through the first sieve holes 22. The crushed and ground material from the primary grinding chamber 501 passes through the first screen openings 22 and into the two secondary grinding chambers 502. The side walls of the two secondary grinding chambers 502 are provided with second sieve holes 7, namely, the second sieve holes 7 are arranged on the side wall of the inner cylinder 5 corresponding to the secondary grinding chambers 502. The second sieve holes 7 enable the two secondary grinding cavities 502 to be communicated with the outer grinding cavity 101, so that materials crushed and ground in the two secondary grinding cavities 502 can enter the outer grinding cavity 101. The first mesh 22 has a larger pore size than the second mesh 7 so that the primary grinding chamber 501 passes to the secondary grinding chamber 502 and then to the outer grinding chamber 101 to form a progressively finer grinding level.
The primary grinding chamber 501, the secondary grinding chamber 502 and the outer grinding chamber 101 are each provided with a grinding medium, and the diameter of the primary grinding medium 8 in the primary grinding chamber 501 is larger than the diameter of the secondary grinding medium 9 in the secondary grinding chamber 502, and the diameter of the secondary grinding medium 9 in the secondary grinding chamber 502 is larger than the diameter of the outer grinding medium 11 in the outer grinding chamber 101. The grinding medium in the invention can adopt steel balls.
Further, the outer cylinder 10 and the inner cylinder 5 may be one of the first structural forms, referring to fig. 9 and 10, etc., the radial cross section of the outer cylinder 10 may be circular, the radial cross section of the inner cylinder 5 may be elliptical, and the inner cylinder 5 and the outer cylinder 10 may be coaxial, specifically, the inner cylinder 5 and the outer cylinder 10 may be coaxially rotated. A grinding gap 504 is formed between the long axial surface 503 of the inner cylinder 5 and the inner wall of the outer cylinder 10. The long axial surface 503 of the inner tube 5 referred to herein is a surface corresponding to both ends of the long axis of the elliptical inner tube 5. In fig. 9 and 10, the intersection point of the major axis and the minor axis of the inner tube 5 is the center of the inner tube 5, and the axis perpendicular to the center of the inner tube 5 in fig. 9 or 10 is the center axis which is the rotation axis of the inner tube 5 and the outer tube 10.
In the second construction, referring to fig. 21 and 22, the radial cross section of the outer cylinder 10 may be circular, and the radial cross section of the inner cylinder 5 may be racetrack-shaped, i.e., referring to fig. 23, the left and right side surfaces of the inner cylinder 5 are planar, and the upper and lower end surfaces are cambered surfaces. The inner cylinder 5 is coaxial with the outer cylinder 10, and specifically, the inner cylinder 5 and the outer cylinder 10 can coaxially rotate. A grinding gap 504 is formed between the long axial surface 503 of the inner cylinder 5 and the inner wall of the outer cylinder 10. The long axial surface 503 of the inner tube 5 is referred to herein as a surface corresponding to both ends of the long axis CZ of the racetrack-shaped inner tube 5 as shown in fig. 23. Whereas the axis DZ in fig. 23 is the minor axis of the racetrack-shaped inner barrel 5. In fig. 23, the intersection point of the major axis CZ and the minor axis DZ of the inner tube 5 is the center of the inner tube 5, and the axis perpendicular to the center of the inner tube 5 in fig. 23 is the center axis which is the rotation axis of the inner tube 5 and the outer tube 10.
The material can be further refined and ground through the grinding gap 504, the distance between the grinding gaps 504 is smaller than the diameter of the outer grinding medium 11, and the size of the grinding gap 504 can be adjusted according to the particle size requirement of the material to be ground.
Further, referring to fig. 4, 9, 10, 21, 22, etc., the long axial surface 503 of the inner tube 5 may be provided with an outwardly extending cambered surface 505. The outer arcuate surface 505 forms a grinding gap 504 with the inner wall of the outer tub 10. The function of the epitaxial cambered surface 505 is to increase the polishing area of the polishing gap 504 without changing the short axis of the inner cylinder 5, thereby improving the polishing effect. In addition, referring to fig. 15, a bell-mouth shaped opening 506 may be formed between both ends of the outer arc surface 505 and the inner wall of the outer tub 10, and the bell-mouth shaped opening 506 communicates with the grinding gap 504. The widest dimension of the flared opening 506 is smaller than the diameter of the outer grinding media 11 to prevent the outer grinding media 11 from entering, the flared opening 506 being primarily to facilitate the entry of material for further grinding of the material through the grinding gap 504.
Further, referring to fig. 1-3, a base 1 is also included. Two brackets 3 are fixedly arranged on the base 1. The outer cylinder 10 is provided at both ends thereof on the two brackets 3. A driving assembly is arranged on the bracket 3 and is used for driving the inner cylinder 5 and the outer cylinder 10 to rotate relatively. The bottom of the base 1 is provided with support legs 2 for supporting.
Further, a hollow tube 4 is rotatably disposed on each of the two brackets 3, the hollow tube 4 passes through the side wall of the end portion of the outer cylinder 10 and is coaxially connected with the inner cylinder 5, the inner cavity of the hollow tube 4 is communicated with the primary grinding cavity 501, and a bearing can be disposed between the hollow tube 4 and the side wall of the end portion of the outer cylinder 10, so that the hollow tube 4 and the outer cylinder 10 can rotate more smoothly. The hollow tube 4 may be arranged on the support 3 by means of bearings. The hollow tube 4 can drive the inner tube 5 to rotate.
Further, referring to fig. 3, 7 and 8, etc., the drive assembly includes a gear set and motor 16. The gear set is provided at one end of the outer tub 10. The gear set includes a first gear 12, a second gear 14 and a ring gear 15. The first gear 12 is sleeved on the hollow tube 4, and the first gear 12 is fixedly connected with the hollow tube 4. The second gear 14 engages the first gear 12. And the second gear 14 may be provided on the bracket 3 through the gear shaft 13. And the gear ring 15 is sleeved outside the first gear 12 and the second gear 14, the gear ring 15 is meshed with the second gear 14, and the gear ring 15 is fixedly connected with the outer wall of the end part of the outer cylinder 10. Of course, this is not exhaustive and any other equivalent form of gearing may be used.
The motor 16 is used for driving the first gear 12 to rotate, and preferably, referring to fig. 3, 5 and 6, a driven pulley 18 is fixedly sleeved on the hollow tube 4 at the other end of the outer cylinder 10, and the driven pulley 18 can drive the hollow tube 4 to rotate. The driven pulley 18 is connected to the driving pulley 23 via the transmission belt 17. The driving pulley 23 is connected to the output shaft of the motor 16. The process of the motor driving the inner cylinder 5 and the outer cylinder 10 is described as follows, in which the hollow tube 4 fixed to the driven pulley 18 is referred to as a "driving hollow tube" and the hollow tube 4 connected to the first gear 12 is referred to as a "driven hollow tube" for convenience of description. The motor 16 is started to drive the driving pulley 23 to rotate, the driving pulley 23 drives the driven pulley 18 to rotate through the driving belt 17, and the driven pulley 18 drives the driving hollow tube to rotate, so that the inner cylinder 5 rotates. Meanwhile, the driven hollow tube at the other end drives the first gear 12 to rotate, the first gear 12 is meshed with the second gear 14 to rotate, the rotation of the second gear 14 directly drives the gear ring 15 to rotate, the outer cylinder 10 is driven to rotate, and the rotation direction of the outer cylinder 10 is opposite to that of the inner cylinder 5.
Further, referring to fig. 10 to 14, a first non-return spring 24 may be provided on the separator 6, and the first non-return spring 24 may be provided corresponding to the first mesh 22. The first non-return spring plates 24 are disposed in the secondary grinding chamber 502, the first non-return spring plates 24 extend towards the first screen holes 22 so as to just shield the first screen holes 22, if there are a plurality of first non-return spring plates 24, the extending directions of all the first non-return spring plates 24 are identical, and the gaps between two adjacent first non-return spring plates 24 are preferably not influenced by the movement of the material in the primary grinding chamber 501 towards the secondary grinding chamber 502. The gap between two adjacent first backstop elastic pieces 24 refers to the nearest distance between two adjacent first backstop elastic pieces 24 when the opening 241 of the first backstop elastic piece 24 is opened. In addition, if there are a plurality of first non-return spring pieces 24, the front end of the next first non-return spring piece 24 may be located above the rear end of the previous first non-return spring piece 24, that is, "left" in the figure is the front, and "right" is the rear in the figure, the front end of the right first non-return spring piece 24 is located above the rear end of the left first non-return spring piece 24 in the figure 12, and a gap is left between the front end of the right first non-return spring piece 24 and the rear end of the left first non-return spring piece 24, which is preferable to not hinder the material in the primary grinding chamber 501 from moving into the secondary grinding chamber 502. The first non-return spring 24 can prevent the material in the secondary grinding chamber 502 from flowing back to the primary grinding chamber 501 through the first sieve holes 22, so as to improve the working efficiency. The front end of the first non-return spring 24 is located above the rear end of the first non-return spring 24, so that when the opening 241 of the first non-return spring 24 is closed, the front end of the first non-return spring 24 can be overlapped with the rear end of the first non-return spring 24, so that the first non-return springs 24 form a continuous surface, and the effect of preventing the material from flowing back into the primary grinding cavity 501 is better achieved.
Further preferably, referring to fig. 10 to 14, the opening 241 of the first non-return spring 24 is in the same direction as the movement direction of the inner cylinder 5, the counterclockwise arrow N in fig. 10 to 14 is the movement direction of the inner cylinder 5, the clockwise arrow S is the movement direction of the outer cylinder 10, and the example shown in fig. 13 is that the opening 241 of the first non-return spring 24 is in the same direction as the movement direction of the inner cylinder 5. Fig. 10-14 show a structural form of the first non-return spring 24, in which the first non-return spring 24 is an elastic structure, one end of the elastic structure is fixed, and the other end extends obliquely to the first mesh 22 and forms an opening 241 of the first non-return spring 24, and if there are a plurality of first non-return springs 24, the angles of inclination of the plurality of first non-return springs 24 are consistent, i.e. the openings 241 of the first non-return springs 24 in the same secondary grinding chamber 502 are oriented consistently. The opening 241 of the first backstop shell 24 is closed when being under pressure, and when the pressure is released, the opening 241 of the first backstop shell 24 is re-opened under the action of the elasticity of the first backstop shell 24. The principle of operation is that for ease of description, the secondary grinding chamber 502 located above the primary grinding chamber 501 in fig. 10 is hereinafter referred to as the "upper secondary grinding chamber", and the secondary grinding chamber 502 located below the primary grinding chamber 501 is hereinafter referred to as the "lower secondary grinding chamber". When the inner cylinder 5 rotates to the position shown in fig. 10, the first non-return spring 24 in the "upper secondary grinding chamber" is pressed by the secondary grinding medium 9 and the material, so that the opening 241 of the first non-return spring 24 is closed, and further the first sieve holes 22 on the partition 6 corresponding to the "upper secondary grinding chamber" are covered, so as to prevent the material in the "upper secondary grinding chamber" from falling back into the primary grinding chamber 501. At this time, the secondary grinding medium 9 and the materials in the "lower secondary grinding chamber" are located at the bottom of the "lower secondary grinding chamber", so that the first non-return spring piece 24 in the "lower secondary grinding chamber" is in a natural state, i.e. the opening 241 of the first non-return spring piece 24 is opened, a gap is left between the first non-return spring piece 24 and the partition plate 6 corresponding to the "lower secondary grinding chamber", and the gap is communicated with the first sieve mesh 22, so that the materials passing through the primary grinding from the primary grinding chamber 501 will fall into the "lower secondary grinding chamber" through the gap and the opening 241 of the first non-return spring piece 24. Because the first non-return spring 24 has elasticity, when more material falls from the primary grinding chamber 501, the first non-return spring 24 in the "lower secondary grinding chamber" can be pressed downward to increase the gap between the first non-return spring 24 and the partition 6, so as to facilitate more material to fall into the "lower secondary grinding chamber". As the inner cylinder 5 continues to rotate to the state shown in fig. 11, that is, the original "upper secondary grinding chamber" rotates to the left side of the primary grinding chamber 501, and the "lower secondary grinding chamber" rotates to the right side of the primary grinding chamber 501, during this process, the secondary grinding medium 9 in the "upper secondary grinding chamber" gradually flows down along the first non-return spring 24 in the "upper secondary grinding chamber", and since the first non-return spring 24 is pressed against the first mesh 22, the material does not flow back into the primary grinding chamber 501 along the first mesh 22, and the opening 241 of the first non-return spring 24 is in the same direction as the movement direction of the inner cylinder 5, so as the inner cylinder 5 rotates, the opening 241 of the first non-return spring 24 gradually rotates downward, and during this process, even if the opening 241 of the first non-return spring 24 is gradually opened, the material is not poured back into the primary grinding chamber 501 until the "upper secondary grinding chamber" completely rotates to the state shown in fig. 11, that is, the material is completely rotated to the left side of the primary grinding chamber, and the secondary grinding medium 502 is completely pressed back to the first non-return spring 24, that the second non-return the material is completely pressed against the second non-return spring 24, and the first non-return grinding medium 9 is completely pressed to the bottom of the first non-return spring 24. On the other hand, during the rotation of the inner cylinder 5, the original "lower secondary grinding chamber" will rotate to the right side of the primary grinding chamber 501, during this process, the secondary grinding medium 9 in the secondary grinding chamber 502 will always move against the bottom of the secondary grinding chamber 502 until part of the secondary grinding medium 9 and the material come into contact and gradually press against the first non-return spring 24 in the secondary grinding chamber 502, the opening 241 of the pressed first non-return spring 24 will gradually close, so that the first non-return spring 24 is gradually buckled on the first sieve hole 22 of the partition 6, until the inner cylinder 5 rotates to the position shown in fig. 10 again, at this time, the opening 241 of the first non-return spring 24 will gradually be pressed closed. In this way, the cycle is completed.
The first non-return spring 24 may be provided in another form, referring to fig. 16-22, in which one end of the first non-return spring 24 is disposed on the partition 6 through the first rotating shaft 243, and the other end extends toward the first mesh 22 so as to cover the first mesh 22, and the other end of the first non-return spring 24 forms the opening 241 of the first non-return spring 24. The first non-return spring 24 can rotate about the first rotation axis 243. The feature of this construction is that when the inner cylinder 5 is in the position shown in fig. 16, the first non-return spring 24 in the "upper secondary grinding chamber" can cover the first mesh 22 under its own weight even without the pressing of the secondary grinding media 9 or the like. In the lower secondary grinding chamber ", the opening 241 of the first non-return spring 24 is opened under the action of gravity. In order to avoid the excessive opening angle of the opening 241 of the first non-return spring 24, a limiting structure may be provided, so that the opening 241 of the first non-return spring 24 stops opening after opening to a certain extent, and any one of the structures known in the prior art may be adopted, and of course, the structures shown in fig. 19 and 20 may also be adopted. Referring to fig. 19 and 20, the first rotation shaft 243 is disposed in the rotation shaft sleeve 244, and the rotation shaft sleeve 244 is disposed on the partition 6. One side of the rotating shaft sleeve 244 forms a rotating shaft sleeve opening 2441, the rear end of the first non-return spring piece 24 stretches into the rotating shaft sleeve opening 2441 and is sleeved on the first rotating shaft 243, and when the first non-return spring piece 24 rotates around the first rotating shaft 243, the upper edge 2442 of the rotating shaft sleeve opening can limit the first non-return spring piece 24, so that the opening 241 of the first non-return spring piece 24 is prevented from being too large. Further, the end of the first non-return spring 24 extending into the rotating shaft sleeve 244 may be in contact sliding fit with the inner wall of the rotating shaft sleeve 244. In this way, the first backstop spring 24 may be further provided with an elastic structure.
Further, the first screen holes 22 may be provided in a plurality of rows, and each row of the first screen holes 22 may be provided with a first non-return spring 24 for each row of the first screen holes 22, or each first non-return spring 24 may cover a plurality of rows of the first screen holes 22, and the arrangement mode may be selected according to the need. In this embodiment, each first non-return tab 24 covers a plurality of rows of first holes 22.
Further, a plurality of first protrusions 242 may be disposed on the back of the first non-return spring 24 to increase the polishing effect. The back of the first backstop shell 24, i.e., the side in contact with the secondary grinding media 9, i.e., the top of the first backstop shell 24 shown in fig. 14.
Further, referring to fig. 10 to 18, 21, 22, etc., a second non-return spring 25 may be provided on the outer wall of the inner tube 5, and the second non-return spring 25 may be provided corresponding to the second mesh 7. The second non-return spring 25 extends towards the second sieve aperture 7 so as to cover the second sieve aperture 7, when the second non-return spring 25 is multiple, the extending directions of the second non-return spring 25 on the same side of the inner cylinder 5 are identical, that is, referring to fig. 10, the extending directions of the second non-return spring 25 on the left side of the inner cylinder 5 are identical, that is, the directions of the openings 251 of the second non-return spring 25 on the left side of the inner cylinder 5 are identical, and the extending directions of the second non-return spring 25 on the right side of the inner cylinder 5 are identical, that is, the directions of the openings 251 of the second non-return spring 25 on the right side of the inner cylinder 5 are identical. When there are a plurality of second non-return spring pieces 25, the gap between two adjacent second non-return spring pieces 25 is defined as "no interference with the movement of the material discharged from the secondary polishing chamber 502". The gap between two adjacent second non-return spring plates 25 refers to the closest distance between two adjacent second non-return spring plates 25 when the opening 251 of the second non-return spring plate 25 is opened. The second non-return spring 25 can prevent the material in the outer grinding chamber 101 from flowing back into the secondary grinding chamber 502 through the second sieve holes 7.
Further, the opening 251 of the second non-return spring 25 is in the same direction as the movement direction of the inner cylinder 5, and fig. 10, 11 and 13 show examples in which the opening 251 of the second non-return spring 25 is in the same direction as the movement direction of the inner cylinder 5. For convenience of description, the outer grinding chamber 101 located above the inner cylinder 5 in fig. 11 is referred to as an "upper outer grinding chamber", and the outer grinding chamber 101 located below the inner cylinder 5 is referred to as a "lower outer grinding chamber". When the inner cylinder 5 rotates to the position shown in fig. 11, the second non-return spring 25 in the "upper outer grinding chamber" is gradually pressed by the outer grinding medium 11 and the material, so that the opening 251 of the second non-return spring 25 is closed, and the corresponding second sieve opening 7 is further covered, so as to prevent the material in the "upper outer grinding chamber" from falling back into the secondary grinding chamber 502, and the specific state can refer to the state of the second non-return spring 25 on the right side of the "upper outer grinding chamber" in fig. 11. The second non-return spring 25 that is not pressed is still in a natural state, i.e. the opening 251 of the second non-return spring 25 is opened, and reference may be made to the state of the second non-return spring 25 on the left side of the "upper outer grinding chamber" in fig. 11. At this time, the outer grinding medium 11 and the material in the "lower outer grinding chamber" are located at the bottom of the "lower outer grinding chamber", so that the second non-return spring 25 in the "lower outer grinding chamber" is in a natural state, i.e. the opening 251 of the second non-return spring 25 is opened, a gap is left between the second non-return spring 25 and the outer wall of the inner cylinder 5, and the gap is communicated with the second sieve opening 7, and the material passing through the secondary grinding from the secondary grinding chamber 502 will fall into the "lower outer grinding chamber" through the gap and the opening 251 of the second non-return spring 25, specifically referring to the state of the second non-return spring 25 on the left side in the "lower outer grinding chamber" in fig. 11, at this time, the material in the left secondary grinding chamber 502 will fall into the "lower outer grinding chamber". Because the second non-return spring 25 has elasticity, when more materials fall from the secondary grinding chamber 502, the second non-return spring 25 will be pressed downwards to increase the gap between the second non-return spring 25 and the outer wall of the inner cylinder 5, so as to facilitate the materials to fall into the 'lower outer grinding chamber'. As the inner cylinder 5 continues to rotate to the state shown in fig. 10, that is, the original "upper outer grinding chamber" rotates to the left side of the inner cylinder 5, and the "lower outer grinding chamber" rotates to the right side of the inner cylinder 5, in this process, the outer grinding medium 11 in the "upper outer grinding chamber" gradually flows down along the second non-return spring 25, and since the second non-return spring 25 is pressed against the second mesh 7, the material is not poured back into the secondary grinding chamber 502, and in the process of rotating the inner cylinder 5, the opening 251 of the second non-return spring 25 is in the same direction as the movement direction of the inner cylinder 5, so as the inner cylinder 5 rotates, the opening 251 of the second non-return spring 25 gradually rotates downward, in this process, even if the opening 251 of the second non-return spring 25 is gradually opened, the material is not poured back into the secondary grinding chamber 502 until the inner cylinder 5 rotates completely to the state shown in fig. 10. in the state shown in fig. 10, the outer grinding media 11 will fall to the bottoms of the two outer grinding chambers 101 completely, and at this time, the second non-return spring 25 not pressed by the outer grinding media 11 and the material is reset due to elasticity, i.e. the opening 251 of the second non-return spring 25 is opened, so that the second non-return spring 25 returns to a state of keeping a gap with the outer wall of the inner cylinder 5. On the other hand, in the process of rotating the inner cylinder 5, the original "lower outer grinding chamber" will rotate to the right side of the inner cylinder 5, and in this process, the outer grinding medium 11 in the outer grinding chamber 101 will always move against the bottom of the outer grinding chamber 101 until part of the outer grinding medium 11 and the material come into contact and gradually press against the second non-return spring plate 25 in the outer grinding chamber 101, then the opening 251 of the second non-return spring plate 25 will gradually close, so that the second non-return spring plate 25 is gradually buckled on the second mesh 7, until the inner cylinder 5 rotates to the position shown in fig. 11 again, at this time, the opening 251 of the pressed second non-return spring plate 25 will be completely closed. In this way, the cycle is completed.
In addition, referring to fig. 16-18, 21 and 22, the second non-return spring 25 may be configured in such a manner that one end of the second non-return spring 25 is disposed on the outer wall of the inner cylinder 5 through the second rotating shaft 252, and the second non-return spring 25 may rotate around the second rotating shaft 252, and the specific structure and principle of the second non-return spring may be the same as those of the first non-return spring 24 shown in fig. 19 and 20. In this form, the second backstop spring 25 itself may be provided as an elastic member.
Further, a second protrusion may be provided on the outer side of the second non-return spring 25, i.e., the side contacting the outer grinding medium 11, to increase the grinding effect.
Further, a plurality of rows of second holes 7 may be provided, and a plurality of second holes 7 may be provided in each row, so that one second non-return spring sheet 25 may be provided for each row of second holes 7, or one second non-return spring sheet 25 may cover a plurality of rows of second holes 7.
Further, a detachable blocking cover 19 can be arranged at the pipe orifice of the hollow pipe 4 far away from the inner barrel 5, and the blocking cover 19 can be matched with the hollow pipe 4 in a threaded mode.
The outer cylinder 10 is provided with an opening, and a sealing door 21 is arranged at the opening. For inspecting the inside of the outer tube 10 or taking out the ground metal powder particles.
In addition, a filter plate 26 may be fixedly disposed in one of the hollow pipes 4, and the filter holes on the filter plate 26 may be the same as the second mesh holes 7, and may be used for sucking out formed metal powder after finishing grinding. In addition, an air pipe 20 or the like which can be communicated with the inner cylinder 5 can be arranged on the plugging cover 19 for being used when air needs to be introduced into the inner cylinder 5. Of course, the air pipe 20, the filter sheet 26, and the like may be selected and installed as needed.
Here, as further described with reference to fig. 22, the inside of the racetrack-shaped inner cylinder 5 in fig. 22 is divided into three cylindrical cavities, that is, the primary grinding cavity 501 and the two secondary grinding cavities 502 are both cylindrical structures, or the radial cross sections of the primary grinding cavity 501 and the two secondary grinding cavities 502 are both circular, and the centers of the three circles are all on the long axis CZ of the inner cylinder 5. In this manner, the first backstop tab 24 is configured in an arcuate shape as shown in fig. 22 to better accommodate the shape of the inner wall of the secondary grinding chamber 502. The first non-return spring 24 may be connected to the first shaft 243 as described above, that is, the structure shown in fig. 19 and 20, which is not described here. The two secondary grinding chambers 502 are preferably symmetrically disposed, and as described in detail herein, with reference to fig. 22, if a horizontal plane is perpendicular to the center of the inner barrel 5 in fig. 22, the two secondary grinding chambers 502 are symmetrical with respect to the horizontal plane.
Further description of the application the structure, principles, and processes of use of the present application are further illustrated by way of example and the above description of various preferred embodiments has been presented by way of example only to facilitate a thorough description, and the description is not intended to be limiting of the embodiments of the application and is described in the following:
The initial metal material to be ground is introduced from one of the hollow tubes 4, and then the hollow tube 4 is covered with a blocking cap 19.
When the motor 16 is started, the inner cylinder 5 and the outer cylinder 10 rotate relatively. Here, the manner of "the inner cylinder 5 and the outer cylinder 10 are rotated simultaneously and in opposite directions" is adopted, and here, the form in which the inner cylinder 5 is provided with the outer arc surface 505 is adopted. The partition plate 6 is provided with a first non-return spring piece 24, and the outer wall of the inner cylinder 5 is provided with a second non-return spring piece 25.
When the inner cylinder 5 rotates, the primary grinding medium 8 in the primary grinding cavity 501 is driven to primarily crush and grind the initial metal material. When the inner drum 5 is rotated to the position shown in fig. 10, the milled metal particles pass through the first mesh openings 22 in the partition 6 and enter the secondary milling chamber 502 below the primary milling chamber 501. With the continuous rotation of the inner cylinder 5, the inner cylinder 5 drives the secondary grinding media 9 in the two secondary grinding chambers 502 to further crush and grind the metal particles. The ground metal powder enters the outer grinding cavity 101 through the second sieve holes 7 on the inner cylinder 5. At this time, the outer grinding medium 11 further breaks and grinds the metal powder in the outer grinding chamber 101 by the relative rotation of the inner tube 5 and the outer tube 10. In this process, the metal powder entering the polishing gap 504 through the flare-shaped opening 506 is polished more finely by the polishing gap 504. Thereby producing shaped metal powder particles.
In conclusion, the invention can crush and grind the materials step by step in the same equipment so as to form metal powder, and different grinding media can not interfere with each other, thereby improving the effect and efficiency of powder preparation and well solving the problems existing in the prior art.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the present invention, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "embodiment," "further description," and the like, refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (10)
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| CN202510244984.6A CN119703097B (en) | 2025-03-04 | 2025-03-04 | Metal powder production equipment |
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