Multistage screening machine for metal powder for powder metallurgy

Abstract

The utility model discloses a metal powder multi-stage screening machine for powder metallurgy. A screening barrel is sleeved with an installation frame. The feeding mechanism is arranged at the top end of the screening barrel and comprises a feeding barrel, and a flow guide assembly is arranged in the feeding barrel; the feeding barrel is arranged to be a conical barrel, and a flaring type feeding opening is fixedly formed in the top end of the conical barrel. The flow guide assembly comprises a plurality of splitter plates fixedly arranged in the conical barrel; a plurality of shunting barrels are fixedly arranged between every two adjacent shunting plates and are used for shunting raw materials; the screening mechanism is arranged in the screening barrel, located below the feeding mechanism and used for screening the raw materials. According to the metal powder multi-stage screening machine for powder metallurgy, the area of raw materials falling on the first vibration screen is increased, the utilization rate of the first vibration screen is increased, and the situation that the raw materials fall in the middle of the first vibration screen in a concentrated mode, so that the raw materials are accumulated, the screen is blocked, and the screening efficiency is affected is avoided; the structure is simple, the manufacturing cost is low and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of metal powder screening technology, and in particular to a multi-stage metal powder screening machine for powder metallurgy. Background Technology

[0002] In the process of processing and manufacturing some metals, it is necessary to use corresponding metal powder raw materials. When using metal powder to make metal, since there are particles of different sizes in the metal powder, it is necessary to perform appropriate screening treatment before using the metal powder.

[0003] When screening metal powder, a corresponding metal powder screening device is required. However, when screening metal powder by vibration, the metal powder tends to accumulate and become clogged. Common metal powder screening devices typically have a pipe-type feed inlet, which causes the metal powder to concentrate in the middle of the vibrating screen after feeding, resulting in accumulation, which affects screening efficiency and does not fully utilize the effective area of ​​the vibrating screen.

[0004] Therefore, it is necessary to provide a multi-stage metal powder screening machine for powder metallurgy to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a multi-stage screening machine for metal powders in powder metallurgy.

[0006] This utility model provides a multi-stage metal powder screening machine for powder metallurgy, comprising a screening drum, a feeding mechanism, and a screening mechanism; wherein...

[0007] The screening barrel is fitted with a mounting frame fixedly on its outer circumference; the bottom end of the screening barrel is provided with a discharge port.

[0008] The feeding mechanism, located at the top of the screening barrel, includes a feeding barrel. The feeding barrel has an internal flow guiding component to increase the area for downward flow and dispersion of the raw material. The feeding barrel is conical, with a flared inlet fixedly located at its top. The flow guiding component includes multiple flow dividers fixedly located inside the conical barrel, arranged horizontally and parallel to each other. Multiple flow dividers are fixedly located between every two adjacent flow dividers for diverting the raw material.

[0009] The screening mechanism is located inside the screening barrel, below the feeding mechanism, and is used to screen the raw materials.

[0010] Furthermore, n through holes are uniformly arranged on the surface of one of the flow dividers, n / 2 through holes are uniformly arranged on the surface of the flow divider above the flow divider, and 2n through holes are uniformly arranged on the surface of the flow divider below the flow divider.

[0011] Furthermore, the diversion bucket is arranged vertically through the diversion bucket, and a partition plate is fixedly installed inside the diversion bucket to divide the internal space of the diversion bucket into two parts; the top of the diversion bucket is fixedly installed on the bottom surface of one of the diversion plates, located circumferentially outside one of its through holes, and the bottom of the diversion bucket is fixedly installed on the top surface of one of the diversion plates, located circumferentially outside two of its through holes, and the partition plate is located between the two through holes; the two diversion plates are arranged adjacent to each other vertically.

[0012] Furthermore, the screening mechanism includes a first vibrating screen, a second vibrating screen, and a third vibrating screen fixedly disposed inside the screening barrel, the first vibrating screen, the second vibrating screen, and the third vibrating screen being arranged sequentially from top to bottom; the first vibrating screen, the second vibrating screen, and the third vibrating screen are all inclined, and discharge holes are respectively provided on the wall surface of the screening barrel corresponding to the lowest points of the first vibrating screen, the second vibrating screen, and the third vibrating screen; a sealing door is hinged to the outer wall surface of the screening barrel corresponding to the discharge holes.

[0013] Furthermore, the angles between the first, second, and third vibrating screens and the horizontal plane are set to be between 30 and 45°.

[0014] Furthermore, the mesh counts of the first vibrating screen, the second vibrating screen, and the third vibrating screen increase sequentially.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model discloses a multi-stage metal powder screening machine for powder metallurgy. Through the cooperation between the conical barrel and the flow guiding component, the raw materials are uniformly dispersed and guided downward, increasing the area of ​​the raw materials falling on the first vibrating screen, improving the utilization rate of the first vibrating screen, and avoiding the raw materials from concentrating in the middle of the first vibrating screen, which would lead to material accumulation, screen blockage, and affect screening efficiency. Moreover, it has a simple structure, low manufacturing cost, and high practicality.

[0017] It should be understood that the content described in the utility model description section is not intended to limit the key or important features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model.

[0018] Other features of this invention will become readily apparent from the following description. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure of a multi-stage metal powder screening machine for powder metallurgy provided in this embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the feeding mechanism;

[0022] Figure 3 This is a schematic diagram of the cross-section of the diversion tank;

[0023] The following are the labels in the diagram: 1. Screening barrel; 2. Discharge port; 3. Conical barrel; 4. Flared inlet; 5. Diverter plate; 6. Through hole; 7. Diverter barrel; 8. Separator plate; 9. First vibrating screen; 10. Second vibrating screen; 11. Third vibrating screen; 12. Discharge through hole; 13. Sealing door; 14. Mounting frame. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please refer to Figures 1-3 This utility model provides a multi-stage metal powder screening machine for powder metallurgy, including a screening drum 1, a feeding mechanism, and a screening mechanism; wherein,

[0027] The screening barrel 1 is fitted with a mounting bracket 14 fixedly on its outer circumference to suspend and support the screening barrel 1, so as to facilitate the smooth discharge of material from the bottom discharge port 2 of the screening barrel 1 and improve its practical performance; the bottom end of the screening barrel 1 is provided with a discharge port 2.

[0028] The feeding mechanism is located at the top of the screening barrel 1 and includes a feeding barrel. The inside of the feeding barrel is equipped with a flow guiding component to increase the area of ​​the raw material inside the feeding barrel that is guided and dispersed downwards.

[0029] The feeding hopper is a conical hopper 3 with a small opening at the top and a large opening at the bottom. The raw material enters from the small opening at the top and exits from the large opening at the bottom. In general feeding mechanisms, there is no flow guiding component inside, which causes the raw material to enter vertically into the screen after entering from the inside of the feeding hopper. The raw material is not effectively dispersed, resulting in a small utilization area of ​​the screen and easy accumulation of raw material, which in turn easily leads to screen blockage.

[0030] In the technical solution of this application, a flared feed port 4 is fixedly provided at the top of the conical barrel 3, which facilitates the conveying of raw materials into the interior of the feed barrel.

[0031] The flow guiding assembly includes multiple flow dividers 5 fixedly installed inside the conical barrel 3. The flow dividers 5 are arranged horizontally and are arranged in parallel. Multiple flow dividers 7 are fixedly installed between every two adjacent flow dividers 5 for diverting the raw materials.

[0032] In a preferred embodiment, n through holes 6 are uniformly arranged on the surface of a flow divider 5, n / 2 through holes 6 are uniformly arranged on the surface of an upper flow divider 5 adjacent to the flow divider 5, and 2n through holes 6 are uniformly arranged on the surface of a lower flow divider 5 adjacent to the flow divider 5.

[0033] That is, the number of through holes 6 on the surface of the flow divider 5 from top to bottom increases by a factor of two, so that one through hole 6 on the upper flow divider 5 corresponds to two through holes 6 on the adjacent lower flow divider 5, thus achieving the purpose of dispersing the raw materials.

[0034] In a preferred embodiment, the diversion bucket is arranged vertically through the diversion bucket 7, and a partition plate 8 is fixedly provided inside the diversion bucket 7 to divide the internal space of the diversion bucket 7 into two.

[0035] The top of the diversion barrel 7 is fixedly set on the bottom surface of a diversion plate 5, located on the outer circumferential side of a through hole 6 on it. The bottom of the diversion barrel 7 is fixedly set on the top surface of a diversion plate 5, located on the outer circumferential side of two through holes 6 on it. The partition plate 8 is located between the two through holes 6. The two diversion plates 5 are arranged adjacent to each other vertically.

[0036] That is, the top of the diversion barrel 7 is set with a through hole 6 on the upper diversion plate 5. Since the diversion barrel 7 has a partition plate 8 inside, the internal space of the diversion barrel 7 is divided into two. Then, the bottom of the diversion barrel 7 is divided into two holes by the partition plate 8. The two holes correspond to the two through holes on the lower diversion plate 5. This realizes the diversion of raw materials. The raw materials in the one through hole 6 on the upper diversion plate 5 are dispersed downward to the two through holes 6 below, thus realizing the diversion of raw materials.

[0037] The screening mechanism is located inside the screening barrel 1, below the feeding mechanism, and is used to screen the raw materials.

[0038] In a preferred embodiment, the screening mechanism includes a first vibrating screen 9, a second vibrating screen 10, and a third vibrating screen 11 fixedly disposed inside the screening barrel 1. The first vibrating screen 9, the second vibrating screen 10, and the third vibrating screen 11 are arranged sequentially from top to bottom. The first vibrating screen 9, the second vibrating screen 10, and the third vibrating screen 11 are all inclined to increase the contact area of ​​the raw material on the first vibrating screen 9, the second vibrating screen 10, and the third vibrating screen 11, thereby improving the screening effect and efficiency.

[0039] The mesh counts of the first vibrating screen 9, the second vibrating screen 10, and the third vibrating screen 11 increase sequentially, which improves the screening effect and reduces the probability of screen clogging.

[0040] The screening barrel 1 has discharge holes 12 at the lowest points of the first vibrating screen 9, the second vibrating screen 10 and the third vibrating screen 11 respectively. The outer wall of the screening barrel 1 is hinged with a sealing door 13 corresponding to the discharge holes 12.

[0041] In a preferred embodiment, the angles between the first vibrating screen 9, the second vibrating screen 10, and the third vibrating screen 11 and the horizontal plane are set to between 30° and 45°.

[0042] The working principle of this utility model:

[0043] During operation, the raw material is fed into the conical barrel 3 through the flared feed port 4. Then, the material inside the conical barrel 3 is evenly distributed onto the first vibrating screen 9 by the flow guiding component, thereby increasing the utilization area of ​​the first vibrating screen 9, avoiding the accumulation of raw material in the middle of the first vibrating screen 9, which would cause screen blockage and material accumulation, and improving screening efficiency.

[0044] The raw material passing through the first vibrating screen 9 falls down onto the second vibrating screen 10 for further screening. The raw material passing through the second vibrating screen 10 falls down onto the third vibrating screen 11 for further screening. In summary, the raw material after multi-stage screening is discharged through the discharge port 2. The raw material remaining on the first vibrating screen 9, the second vibrating screen 10 and the third vibrating screen 11 is discharged through the corresponding discharge through holes 12.

[0045] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A powder metallurgical metal powder multistage sizer, characterized in that, Including a screening barrel, a feeding mechanism and a screening mechanism, wherein The circumferential outside of the screening barrel is fixedly sleeved with a mounting frame; and the bottom end of the screening barrel is provided with a discharge port; The feeding mechanism is arranged at the top end of the screening barrel and includes a feeding barrel, the inside of the feeding barrel is provided with a flow guide assembly for increasing the downward flow dispersion area of the raw materials inside the feeding barrel; the feeding barrel is arranged as a conical barrel, the top end of the conical barrel is fixedly provided with a flared feeding port; the flow guide assembly includes a plurality of flow distribution plates fixedly arranged inside the conical barrel, the flow distribution plates are arranged along the horizontal direction, and a plurality of the flow distribution plates are arranged in parallel; a plurality of flow distribution barrels are fixedly arranged between every two adjacent flow distribution plates for distributing the raw materials; The screening mechanism is arranged inside the screening barrel below the feeding mechanism for screening the raw materials.

2. Powder metallurgical metal powder multi-stage sizer according to claim 1, characterized in that The surface of one flow distribution plate is uniformly provided with n through holes, the surface of the flow distribution plate adjacent to the upper side of the flow distribution plate is uniformly provided with n / 2 through holes, and the surface of the flow distribution plate adjacent to the lower side of the flow distribution plate is uniformly provided with 2n through holes.

3. Powder metallurgical metal powder multi-stage sizer according to claim 2, characterized in that The flow distribution barrels are arranged in a penetrating manner, the inside of the flow distribution barrels is fixedly provided with a partition plate for dividing the space inside the flow distribution barrels into two parts; the top end of the flow distribution barrel is fixedly arranged on the bottom surface of one flow distribution plate at the circumferential outside of one through hole, the bottom end of the flow distribution barrel is fixedly arranged on the top surface of one flow distribution plate at the circumferential outside of two through holes, and the partition plate is located between the two through holes; two flow distribution plates are arranged in an adjacent manner.

4. Powder metallurgical metal powder multi-stage sizer according to claim 3, characterized in that The screening mechanism includes a first vibrating screen, a second vibrating screen and a third vibrating screen fixedly arranged inside the screening barrel, the first vibrating screen, the second vibrating screen and the third vibrating screen are arranged in sequence from top to bottom; the first vibrating screen, the second vibrating screen and the third vibrating screen are all arranged in an inclined manner, the lowest parts of the wall surface of the screening barrel corresponding to the first vibrating screen, the second vibrating screen and the third vibrating screen are respectively provided with discharge through holes, and a sealing door is hingedly arranged on the outside wall surface of the screening barrel corresponding to the discharge through holes.

5. Powder metallurgical metal powder multi-stage sizer according to claim 4, characterized in that The included angle between the first vibrating screen, the second vibrating screen and the third vibrating screen and the horizontal plane is arranged to be between 30-45°.

6. Powder metallurgical metal powder multi-stage sizer according to claim 5, characterized in that The mesh number of the first vibrating screen, the second vibrating screen and the third vibrating screen is increased in sequence.

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