Grading device for fine powder production

Abstract

The utility model provides a grading device for fine powder production, which comprises a sorting machine shell, a material channel positioned in the sorting machine shell and used for conveying a device, an acceleration area positioned in the material channel and used for accelerating raw materials, and a grading area positioned below the acceleration area and used for realizing material grading, a groove is formed in the inner wall of the sorting machine shell corresponding to the position where the grading area is located, an installation ring is arranged in the groove, fixing frames are arranged at the two ends of the installation ring respectively, a weak magnetic structure is installed at the position of one fixing frame, and a strong magnetic structure is installed at the position of the other fixing frame. The working mode that weak magnetism adsorbs large particles and strong magnetism adsorbs small particles is adopted, fine powder separation is achieved, dust generated in the working process is little, the environmental protection performance is high, the number of separation structures can be increased or decreased according to the actual situation of a user, and the device is good in separation effect and high in working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fine powder grading device technical field especially relates to a grading device for fine powder production. BACKGROUND

[0002] Iron powder is the metal powder in powder metallurgy industry, in terms of granularity, can be divided into coarse powder, medium powder, fine powder, microfine powder and ultrafine powder five grades, wherein, the particle size of fine powder is 10-44 microns, when producing fine powder, need to classify fine powder, improve the purity of fine powder, in the prior art, the classification is realized by wind wheel blowing, but this classification mode will send part of iron powder into the air when classifying, influence the health of workers, and the environmental protection performance is poor. UTILITY MODEL CONTENT

[0003] In order to solve the above technical problems, the utility model provides a grading device for fine powder production.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of grading device for fine powder production, a kind of grading device for fine powder production, including for sorting machine shell, material passageway for conveying device in sorting machine shell and acceleration zone for realizing raw material acceleration in material passageway, further include the classification area for realizing material classification in acceleration zone below, slot is opened on the inner wall of sorting machine shell corresponding to the position where classification area is located, installation ring is arranged in the slot, the both ends of the installation ring are respectively provided with fixed frame, one of fixed frame is installed weak magnetic structure, another fixed frame is installed strong magnetic structure, weak magnetic structure is located above strong magnetic structure, hole is formed raw material passageway on the outer wall of the middle upper part of classification area corresponding to weak magnetic structure and on the outer wall of the middle upper part of classification area corresponding to strong magnetic structure respectively, wherein, the inner wall diameter of raw material passageway corresponding to the position of weak magnetic structure is greater than the inner wall diameter of raw material passageway corresponding to the position of strong magnetic structure, raw material collecting box for collecting raw material is respectively arranged below weak magnetic structure and below strong magnetic structure, bottom discharge port is provided at the last end of material passageway.

[0006] Raw material passageway located at the position corresponding to weak magnetic structure is coarse powder passageway, raw material passageway located at the position corresponding to strong magnetic structure is fine powder passageway, and coarse powder passageway and fine powder passageway are both closely arranged on the surface of classification area.

[0007] The acceleration zone is spirally arranged, and there is a height difference between the starting end of the acceleration zone and the end of the acceleration zone, and the inclined surface of the acceleration zone is relatively steep, and a slope is arranged at the connection position of the acceleration zone and the inlet to accelerate the entry of the material.

[0008] The bottom end of the material channel is a drop area, and the connecting angle between the drop area and the material channel is nearly vertical, and the filter screen is connected to the inside of the sorting machine shell through a connection structure below the drop area.

[0009] A bottom material box is arranged below the filter screen, a coarse powder box is arranged below the weak magnetic structure, and a fine powder box is arranged below the strong magnetic structure, and the bottom material box, the coarse powder box and the fine powder box can be taken out from the sorting machine shell.

[0010] The sorting machine shell is provided with a slot corresponding to the classification area, and the installation ring is arranged in the slot, and the upper fixing frame and the lower fixing frame are arranged on the installation ring, wherein the upper fixing frame is used for installing the weak magnetic structure, and the lower fixing frame is used for installing the strong magnetic structure.

[0011] The sorting machine shell is provided with a slot corresponding to the classification area, and the installation ring is arranged in the slot, and the upper fixing frame and the lower fixing frame are arranged on the installation ring, wherein the upper fixing frame is used for installing the weak magnetic structure, and the lower fixing frame is used for installing the strong magnetic structure.

[0012] The number of the weak magnetic structure is one, and the magnetism of the weak magnetic structure can adsorb relatively coarse particles in the classification area; the number of the strong magnetic structure is one, and the magnetism of the strong magnetic structure can adsorb relatively fine particles in the classification area.

[0013] The number of the weak magnetic structure is one, and the magnetism of the weak magnetic structure can adsorb relatively coarse particles in the classification area; the number of the strong magnetic structure is one, and the magnetism of the strong magnetic structure can adsorb relatively fine particles in the classification area.

[0014] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0015] 1. The utility model sets up the material channel, the material channel is arranged in the sorting machine shell, the material channel contains the acceleration area, the classification area and the drop area, the inlet and the acceleration area are connected, the acceleration area is inclined and has the height difference, when the raw material passes through the acceleration area, the acceleration can be obtained from the acceleration area, so that the raw material obtains the faster moving speed, so as to be able to enter the classification area faster, and obtains the energy that is enough to move in the classification area, along with the slope delay of the classification area, the material speed slows down, can be fully adsorbed and separated in the classification area.

[0016] 2. Weak magnetism is arranged in the device first, and strong magnetism is arranged below the weak magnetism, the characteristics of large particles and large magnetism are utilized, that is, relatively large particles can be adsorbed by smaller magnetism, and smaller particles cannot be adsorbed by weak magnetism, so they can continue to advance in the classification area and continue to approach the strong magnetic structure, and finally be captured by the strong magnetism, realizing fine powder classification.

[0017] 3. The last end of the sorting area is provided with a drop area, which is connected with the sorting area nearly vertically, and the particles flowing out of the sorting area obtain gravitational potential energy through the drop area, and then the potential energy is applied to the filter screen, so that the screen filtering is realized, and three-layer classification of the device is realized.

[0018] 4. The device utilizes the characteristics that large and small particles have different magnetism, adopts the working mode of weak magnetic adsorption of large particles and strong magnetic adsorption of small particles, achieves fine powder sorting, generates less dust in the working process, has high environmental protection performance, and the sorting structure can be increased or reduced according to the actual situation of the user, the device has good sorting effect and high working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is the overall structure schematic diagram of the utility model;

[0020] Fig. 2 is the structure schematic diagram of the bottom discharge port in the utility model;

[0021] Fig. 3 is the appearance structure schematic diagram of the utility model.

[0022] In the drawings:

[0023] 1, inlet; 2, material channel; 3, acceleration area; 4, classification area; 41, coarse powder passage; 42, fine powder passage; 5, bottom discharge port; 6, sorting machine shell; 61, mounting ring; 62, upper fixed frame; 63, lower fixed frame; 7, weak magnetic structure; 8, strong magnetic structure; 9, drop area; 91, connection structure; 92, filter screen; 93, cleaning port; 10, coarse powder box; 11, fine powder box; 12, bottom material box. DETAILED DESCRIPTION

[0024] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below, obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0025] As shown in the accompanying drawings Figs. 1-3As shown, the utility model discloses a grading device for fine powder production, which comprises a material channel 2, the material channel 2 is spirally arranged in a sorting machine shell 6, and the upper end of the material channel 2 protrudes from the sorting machine shell 6, a feeding port 1 is arranged on the material channel 2, and a user can put materials into the material channel 2 through the feeding port 1; the material channel 2 comprises an acceleration zone 3, materials obtain acceleration in the acceleration zone 3, one end of the acceleration zone 3 away from the feeding port 1 is connected with a grading zone 4, the moving speed of materials in the grading zone 4 is slower than that in the acceleration zone 3, a weak magnetic structure 7 and a strong magnetic structure 8 are sequentially arranged from top to bottom on the periphery of the grading zone 4, coarse particles are first separated from the grading zone 4 through the weak magnetic structure 7, fine particles are then separated from the grading zone 4 through the strong magnetic structure 8, and finally the remaining fine powder after grading is discharged through a filter screen 92, thereby realizing three-stage sorting.

[0026] The acceleration zone 3 is formed in the middle upper part of the material channel 2, the acceleration zone 3 is a plurality of continuous small-radian spiral bends with the whole downward, the inner wall of the acceleration zone 3 is smooth, the front end of the acceleration zone 3 is connected with the tail end of the feeding port 1, a slope for buffering is arranged on the connecting part, the last end of the acceleration zone 3 not connected with the feeding port 1 is connected with the grading zone 4, the arc of the grading zone 4 is greater than that of the acceleration zone 3, and a circular hole is arranged on the outer wall of the grading zone 4; the material channel 2 is arranged in the sorting machine shell 6 and is detachably connected with the sorting machine shell 6, the upper end surface of the sorting machine shell 6 and the upper end surface of the acceleration zone 3 are located on the same horizontal plane, and a supporting leg for supporting the sorting machine shell 6 is arranged on the lower end of the sorting machine shell 6.

[0027] The sorting machine shell 6 is connected by two half-circular cavity shells, an arc-shaped slot is arranged on the inner wall of the sorting machine shell 6 corresponding to the grading zone 4, the slot is arranged in a straight-up and straight-down state, the length of the slot is equal to the length of the grading zone 4, an installation ring 61 is arranged in the middle position of the slot and in the sorting machine shell 6, the installation ring 61 divides the slot space into upper and lower parts, an upper fixed frame 62 is arranged above the installation ring 61 and in the upper space, and a lower fixed frame 63 is arranged in the lower space of the slot space corresponding to the upper fixed frame 62.

[0028] In terms of installation of the weak magnetic structure 7 and the strong magnetic structure 8, the device has multiple installation modes, one weak magnetic structure 7 and one strong magnetic structure 8 can be installed, one weak magnetic structure 7 and multiple strong magnetic structures 8 can be installed, multiple weak magnetic structures 7 and one strong magnetic structure 8 can be installed, and multiple weak magnetic structures 7 and multiple strong magnetic structures 8 can be installed.

[0029] When the number of the weak magnetic structure 7 and the strong magnetic structure 8 is one respectively, the weak magnetic structure 7 is arranged in the slotted space and connected with the middle upper part of the upper fixed frame 62, the strong magnetic structure 8 is fixed by the middle upper part of the lower fixed frame 63, there is a gap between the inner wall of the weak magnetic structure 7 and the outer wall of the grading area 4, the coarse powder passage 41 is arranged in the middle upper part of the outer wall of the grading area 4 corresponding to the weak magnetic structure 7 and is closely opened towards the weak magnetic structure 7; the same processing is done on the outer wall of the grading area 4 corresponding to the strong magnetic structure 8 as the weak magnetic structure 7, so that the fine powder passage 42 is formed on the outer wall of the grading area 4 corresponding to the strong magnetic structure 8, the diameter of the coarse powder passage 41 is greater than the diameter of the fine powder passage 42.

[0030] When the installation mode is one weak magnetic structure 7 and multiple strong magnetic structures 8, a plurality of mounting rings 61 are arranged in the slot, and the upper fixed frame 62 and the lower fixed frame 63 are respectively arranged on each mounting ring 61. It is worth noting that the structure of the upper fixed frame 62 and the lower fixed frame 63 is not different, only the name is different. The weak magnetic structure 7 is arranged in the uppermost upper fixed frame 62, and the strong magnetic structure 8 is arranged in all the remaining upper fixed frames 62 and all the lower fixed frames 63. When the installation mode is multiple weak magnetic structures 7 and one strong magnetic structure 8, only the strong magnetic structure 8 is arranged in the lowermost lower fixed frame 63, and the weak magnetic structure 7 is arranged in all the remaining upper fixed frames 62 and lower fixed frames 63. Similarly, when the weak magnetic structure 7 and the strong magnetic structure 8 are installed in half, only the weak magnetic structure 7 is arranged on half of the adjacent upper fixed frames 62 and lower fixed frames 63, and the strong magnetic structure 8 is arranged on the other half of the adjacent upper fixed frames 62 and lower fixed frames 63.

[0031] The coarse powder box 10 is arranged below the weak magnetic structure 7 and at the bottom end of the upper fixed frame 62, and the fine powder box 11 is arranged below the strong magnetic structure 8 and at the bottom end of the lower fixed frame 63. The rotating cover for taking out the coarse powder box 10 is arranged on the outer wall of the sorting machine shell 6 corresponding to the position of the coarse powder box 10. The surface of the sorting machine shell 6 corresponding to the position of the fine powder box 11 is also processed in the same way.

[0032] A drop area 9 is integrally formed at the end of the material passage 2 away from the inlet 1, and a filter screen 92 is connected below the bottom end of the drop area 9 and in the sorting machine housing 6 through a connecting structure 91. The drop area 9 is below the material passage 2 and vertically connected to the bottom end surface of the material passage 2. The drop area 9 has a certain height, so that the material flowing out of the material passage 2 obtains gravitational potential energy when passing through the drop area 9. With the falling of the material, the gravitational potential energy acts on the surface of the filter screen 92 to achieve sieving. The filter screen 92 is taken out or stored through the cleaning port 93 provided on the surface of the sorting machine housing 6. The material passing through the filter screen 92 falls into the bottom material box 12 provided at the bottom end of the sorting machine housing 6.

[0033] The device has an intelligent structure. An intelligent control box is installed on the sorting machine housing 6. A PLC is installed in the intelligent control box. A shielding sensor is installed at the connecting position of the acceleration area 3 and the inlet 1. When the shielding sensor is shielded by the material entering the inlet 1, the weak magnetic structure 7 and the strong magnetic structure 8 connected to the output end of the PLC start to work. The weak magnetic structure 7 and the strong magnetic structure 8 are both electromagnets, but the magnetic property of the weak magnetic structure 7 is smaller than that of the strong magnetic structure 8. The weak magnetic structure 7 and the strong magnetic structure 8 can be CG-80 frame type electromagnets or other existing technology magnetic adjustable electromagnets. At the same time, the number of the weak magnetic structure 7 and the strong magnetic structure 8 can be increased according to the actual situation. It should be noted that the same weak magnetic structure 7 and the same strong magnetic structure 8 cannot be spaced apart. At the same time, the magnetic property of the weak magnetic structure 7 is sufficient to adsorb the relatively coarse particles of the fine powder in the current classification area 4, and the magnetic property of the strong magnetic structure 8 is sufficient to adsorb the relatively fine particles of the fine powder in the current classification area 4.

[0034] At the same time, the inner wall of the material passage 2 is smooth and made of a material that will not be magnetically attracted. In order to ensure the movement of the fine powder in the material passage 2, a vibration motor can be added at the acceleration area 3 of the material passage 2. The vibration motor generates vibration to promote the fine powder to enter the material passage 2 faster.

[0035] In use, the user connects the device to an external power supply, controls the power-on of the device through the control switch, pours the fine powder to be sorted (hereinafter referred to as raw material) into the inlet 1, the inlet 1 sends the raw material into the material channel 2, and the raw material contacts the acceleration zone 3 in the material channel 2. Since the curvature of the acceleration zone 3 is small, the curvature is small, and the front end and the tail end of the acceleration zone 3 have a height difference, therefore, after the raw material enters the acceleration zone 3, the raw material will obtain acceleration and realize high-speed movement. The raw material in high-speed movement enters the classification zone 4 through the acceleration zone 3, one or more weak magnetic structures 7 located on both sides of the classification zone 4 generate weak magnetism, and the relatively coarse particles contained in the moving raw material are adsorbed to the surface of the weak magnetic structure 7 from the coarse powder passage 41 by the weak magnetism; the user can set multiple weak magnetic structures 7 for multiple adsorption; the remaining raw material continues to move in the classification zone 4, and the relatively fine particles in the raw material are attracted by the strong magnetic structure 8, pass through the fine powder passage 42 by contacting the strong magnetic structure 8. Similarly, the user can set multiple strong magnetic structures 8 for multiple adsorption, and the remaining raw material moves in the classification zone 4 until it contacts the drop zone 9 at the tail end. After obtaining gravitational potential in the drop zone 9, the raw material contacts the filter screen 92 and realizes the last classification. The raw material passing through the filter screen 92 falls into the bottom material box 12 through the bottom discharge port 5, and the raw material located on the filter screen 92 can be cleaned through the cleaning port 93. At the same time, the user can take out the coarse powder box 10 from the upper fixed frame 62, and take out the fine powder box 11 from the lower fixed frame 63, so as to realize coarse and fine classification. After the device classifies the material in the material channel 2, the PLC controls the weak magnetic structure 7 and the strong magnetic structure 8 to be powered off. The weak magnetic structure 7 loses magnetism after being powered off, and the relatively coarse particles located at the weak magnetic structure 7 fall into the coarse powder box 10. The relatively fine particles located at the strong magnetic structure 8 fall into the fine powder box 11.

[0036] The technical scheme disclosed in the utility model, or the technical scheme designed by the person skilled in the art under the inspiration of the technical scheme of the utility model, achieves the above technical effects, and falls within the protection scope of the utility model.

Claims

1. A classifying device for fine powder production, comprising a classifier housing (6), a material channel (2) for a conveying device located inside the classifier housing (6) and an acceleration zone (3) for accelerating the raw material located inside the material channel (2), characterized in that, It also includes a classification area (4) below the acceleration area (3) for realizing material classification, a slot is opened on the inner wall of the sorting machine shell (6) corresponding to the position of the classification area (4), a mounting ring (61) is arranged in the slot, two ends of the mounting ring (61) are respectively provided with fixed frames, one of the fixed frames is provided with a weak magnetic structure (7), the other fixed frame is provided with a strong magnetic structure (8), the weak magnetic structure (7) is located above the strong magnetic structure (8), holes are formed on the upper outer wall of the classification area (4) corresponding to the weak magnetic structure (7) and the upper outer wall of the classification area (4) corresponding to the strong magnetic structure (8) to form a raw material passage, the weak magnetic structure (7) can attract relatively coarse particles, and the strong magnetic structure (8) can attract relatively fine particles (23).

2. The classification device for fine powder production according to claim 1, characterized in that: The raw material passage corresponding to the position of the weak magnetic structure (7) is a coarse powder passage (41), the raw material passage corresponding to the position of the strong magnetic structure (8) is a fine powder passage (42), and the coarse powder passage (41) and the fine powder passage (42) are both closely arranged on the surface of the classification area (4).

3. The classification device for fine powder production according to claim 2, characterized in that: The acceleration area (3) is arranged in a spiral shape, there is a height difference between the starting end of the acceleration area (3) and the end of the acceleration area (3), the inclined surface of the acceleration area (3) is relatively steep, and a slope is arranged at the connection position of the acceleration area (3) and the inlet (1) to accelerate the entry of the material.

4. The classification device for fine powder production according to claim 3, characterized in that: The bottom end of the material passage (2) is a drop area (9), the connection angle between the drop area (9) and the material passage (2) is nearly vertical, a filter screen (92) is connected through a connection structure (91) in the inside of the sorting machine shell (6) below the drop area (9).

5. The classification device for fine powder production according to claim 4, characterized in that: A bottom material box (12) is arranged below the filter screen (92); a coarse powder box (10) is arranged below the weak magnetic structure (7); a fine powder box (11) is arranged below the strong magnetic structure (8); the bottom material box (12), the coarse powder box (10) and the fine powder box (11) can all be taken out from the sorting machine shell (6).

6. The classification device for fine powder production according to claim 1, characterized in that: A slot is arranged in the sorting machine shell (6) corresponding to the classification area (4), a mounting ring (61) is arranged in the slot, an upper fixed frame (62) and a lower fixed frame (63) are arranged on the mounting ring (61), the upper fixed frame (62) is used for mounting the weak magnetic structure (7), and the lower fixed frame (63) is used for mounting the strong magnetic structure (8).

7. The classification device for fine powder production according to claim 1, characterized in that: A slot is arranged in the sorting machine shell (6) corresponding to the classification area (4), a plurality of mounting rings (61) are sequentially arranged from top to bottom in the slot, and the center line of the slot is taken as a boundary, all the mounting rings (61) above the center line of the slot are all mounted with the upper fixed frame (62), and all the mounting rings (61) below the center line of the slot are all mounted with the lower fixed frame (63).

8. The classification device for fine powder production according to claim 6, characterized in that: The number of the weak magnetic structure (7) is one, and the magnetism of the weak magnetic structure (7) can adsorb relatively coarse particles in the classification area (4); the number of the strong magnetic structure (8) is one, and the magnetism of the strong magnetic structure (8) can adsorb relatively fine particles in the classification area (4).

9. The classification device for fine powder production according to claim 7, characterized in that: The number of the weak magnetic structure (7) is multiple, which can adsorb the coarse particles in the grading area (4) for multiple times in the process of subdivision; the number of the strong magnetic structure (8) is multiple, which can adsorb the fine particles in the grading area (4) for multiple times.

10. The classification device for fine powder production as claimed in claim 1, wherein: The inner wall diameter of the raw material passage corresponding to the position of the weak magnetic structure (7) is greater than the inner wall diameter of the raw material passage corresponding to the position of the strong magnetic structure (8), and raw material collecting boxes for collecting raw materials are arranged below the weak magnetic structure (7) and below the strong magnetic structure (8), respectively, and a bottom discharge port is arranged at the last end of the material passage (2).

Images