Classified screening device for metal powder

Abstract

The utility model discloses a metal powder grading screening device which comprises a screening main box body, the top of the screening main box body is connected with a feeding port, and the two sides of the screening main box body are respectively connected with a plurality of air inlets and discharging ports which are matched with each other. An air inlet pipeline and an air outlet pipeline which are matched with the air inlet and the discharging opening respectively are connected to the two sides of the screening main box body, fans are connected to the air inlet pipeline and the air outlet pipeline, a gas filtering box is connected to the outer side of the air inlet pipeline, a material guiding pipeline is connected to the outer side of the air outlet pipeline, and the discharging opening is formed in one side of the bottom of the screening main box body. Compared with the prior art, the metal dust screening device has the advantages that fine metal dust can be screened in a winnowing mode through left-right air blowing and exhausting structures and top blanking, and feeding and discharging smoothness and screening efficiency can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder screening equipment, in particular to a metal powder grading and screening device. Background Art

[0002] Metal powder refers to a group of metal particles with a size of less than 1 mm, including single metal powder, alloy powder and certain refractory compound powders with metallic properties. It is the main raw material for powder metallurgy.

[0003] During the production process, metal powders often need to be graded and screened. However, the screening devices in the prior art are all mechanical screening operations. Mechanical screening operations are not very effective for screening relatively fine metal powders, and this type of mechanical screening equipment is not smooth in the feeding and discharging processes. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a metal powder grading and screening device with high efficiency and smooth screening in view of the deficiencies raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a metal powder grading and screening device, comprising a screening main box, a feeding port connected to the top of the screening main box, a plurality of mutually cooperating air inlets and discharge ports connected to both sides of the screening main box, and air inlet ducts and air outlet ducts respectively cooperating with the air inlets and discharge ports connected to both sides of the screening main box;

[0006] The air inlet duct and the air outlet duct are both connected to fans, the outsides of the air inlet ducts are commonly connected to gas filter boxes, the outsides of the air outlet ducts are both connected to material guide ducts, and one side of the bottom of the screening main box is provided with a main discharge port.

[0007] Furthermore, the fan includes a drive motor connected to the outside, the bottom power end of the drive motor is connected to a rotating shaft extending into the fan, and a plurality of fan blades are connected to the rotating shaft to facilitate the exhaust operation.

[0008] Furthermore, a main air inlet is provided at the bottom of the gas filter box, and a filter is connected to the bottom of the gas filter box above the main air inlet to facilitate filtering of the drawn-in gas.

[0009] Furthermore, the filter element includes a top supporting mesh plate, and a filter cloth cover layer is fixedly connected to the bottom of the supporting mesh plate to facilitate filtering of gas and dust.

[0010] Furthermore, a first wind speed detector and a second wind speed detector are respectively connected to the air inlet duct and the air outlet duct, so as to facilitate the wind speed detection operation.

[0011] Furthermore, the air inlet duct and the air outlet duct are respectively connected with a first fixed support frame and a second fixed support frame, which facilitates the fixation of the air inlet duct and the air outlet duct structure.

[0012] The advantages of the metal powder grading and screening device of the present invention compared with the prior art are: the device can screen relatively fine metal dust by air selection through the left and right blowing and exhaust structures and the top dropping, thereby ensuring the smoothness of feeding and discharging and the high efficiency of screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a first structural schematic diagram of a metal powder grading and screening device of the present utility model.

[0014] Figure 2 This is a second structural schematic diagram of a metal powder grading and screening device of the present utility model.

[0015] Figure 3 The utility model is a side sectional structural schematic diagram of a metal powder grading and screening device.

[0016] Figure 4 The utility model is a schematic diagram of the structure of a filter element of a metal powder grading and screening device.

[0017] As shown in the figure: 1. Screening main box; 2. Feeding port; 3. Air inlet duct; 4. Air outlet duct; 5. Fan; 6. Gas filter box; 7. Material guide duct; 8. Main discharge port; 9. Drive motor; 10. Rotating shaft; 11. Fan blades; 12. Filter element; 13. Main air inlet; 14. Air inlet; 15. Discharge port; 16. First wind speed detector; 17. Second wind speed detector; 18. First fixed support frame; 19. Second fixed support frame; 20. Support mesh plate; 21. Filter cloth cover layer. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features limited to "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meaning of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Combined with attachment Figure 1-4 A metal powder grading and screening device includes a screening main box 1, the top of the screening main box 1 is connected to a feeding port 2, when the feeding port 2 is actually set, the position of the falling material needs to be aligned with the middle position to prevent the metal powder from colliding and redirecting at the inner wall position of the screening main box 1, the two sides of the screening main box 1 are respectively connected to a plurality of mutually coordinated air inlets 14 and discharge ports 15, the two sides of the screening main box 1 are respectively connected to an air inlet duct 3 and an air outlet duct 4 that respectively cooperate with the air inlet 14 and the discharge port 15 That is, air is taken in on one side and exhausted on the other side, thereby forming convection. By controlling the wind speed, metal powders of different weights can be graded and screened. The outer side of the outlet duct 4 is connected to a material guide duct 7. In actual use, two or more outlet ducts 4 can be connected to a material guide duct 7 to prevent some metal powder from leaking. Generally, the more material is added to the upper feeding port 2, the more outlet ducts 4 are connected to a material guide duct 7. A main discharge port 8 is provided on one side of the bottom of the screening main box 1.

[0023] The air inlet duct 3 and the air outlet duct 4 are both connected with a fan 5, and the fan 5 includes a drive motor 9 connected to the outside. The bottom power end of the drive motor 9 is connected with a rotating shaft 10 extending into the fan 5. The rotating shaft 10 needs to be sealed and rotated. A plurality of fan blades 11 are connected to the rotating shaft 10. The air inlet duct 3 and the air outlet duct 4 are respectively connected with a first wind speed detector 16 and a second wind speed detector 17. The drive motor 9 is a servo motor, which is convenient for controlling the speed. It can sense the convection wind speed operation in conjunction with the first wind speed detector 16 and the second wind speed detector 17. The air inlet duct 3 and the air outlet duct 4 are respectively connected with a first fixed support frame 18 and a second fixed support frame 19.

[0024] The outside of the air inlet duct 3 is commonly connected to a gas filter box 6, and a main air inlet 13 is provided at the bottom of the gas filter box 6. The bottom of the gas filter box 6 is located above the main air inlet 13 and is connected to a filter element 12. The filter element 12 includes a top support mesh plate 20, and a filter cloth cover layer 21 is fixedly connected to the bottom of the support mesh plate 20, that is, the exhaust air of the air inlet duct 3 needs to be filtered to prevent excessive dust and garbage from being drawn in and affecting the screening quality of the metal powder.

[0025] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A metal powder grading and screening device, comprising a screening main box (1), characterized in that: The top of the screening main box (1) is connected to a feeding port (2), and both sides of the screening main box (1) are respectively connected to a plurality of mutually cooperating air inlets (14) and discharge ports (15), and both sides of the screening main box (1) are respectively connected to air inlet ducts (3) and air outlet ducts (4) that respectively cooperate with the air inlets (14) and the discharge ports (15); The air inlet duct (3) and the air outlet duct (4) are both connected to a fan (5), the outside of the air inlet duct (3) is commonly connected to a gas filter box (6), the outside of the air outlet duct (4) is connected to a material guide duct (7), and a main discharge port (8) is provided on one side of the bottom of the screening main box (1).

2. The metal powder grading and screening device according to claim 1, characterized in that: The fan (5) includes a drive motor (9) connected to the outside, a bottom power end of the drive motor (9) is connected to a rotating shaft (10) extending into the fan (5), and a plurality of fan blades (11) are connected to the rotating shaft (10).

3. The metal powder grading and screening device according to claim 1, characterized in that: The bottom of the gas filter box (6) is provided with a main air inlet (13), and the bottom of the gas filter box (6) is located above the main air inlet (13) and is connected to a filter element (12).

4. The metal powder grading and screening device according to claim 3, characterized in that: The filter element (12) comprises a top supporting mesh plate (20), and a filter cloth cover layer (21) is fixedly connected to the bottom of the supporting mesh plate (20).

5. The metal powder grading and screening device according to claim 1, characterized in that: A first wind speed detector (16) and a second wind speed detector (17) are respectively connected to the air inlet duct (3) and the air outlet duct (4).

6. The metal powder grading and screening device according to claim 1, characterized in that: The air inlet duct (3) and the air outlet duct (4) are respectively connected with a first fixed support frame (18) and a second fixed support frame (19).

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