Powder screening machine

Abstract

The utility model discloses a powder screening machine, which relates to the technical field of screening, and comprises a box body, the left side wall and the right side wall of the box body are respectively provided with a first avoiding hole and a second avoiding hole; the material box is arranged in the box body and abuts against the inner bottom wall of the box body; the first screening assembly comprises a first frame body, a first screen and a first material guide plate, the first screen is arranged in the first frame body, and the first material guide plate is arranged on the first frame body; the second screening assembly comprises a second frame body, a second screen and a second material guide plate, the second screen is arranged in the second frame body, and the second material guide plate is arranged on the second frame body; and the vibration device is used for driving the box body to vibrate. The first screen and the second screen in the powder screening machine can be quickly disassembled and assembled, so that the maintenance efficiency of maintenance personnel on the powder screening machine can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screening, particularly to a powder screening machine. BACKGROUND

[0002] The powder screening machine is a kind of equipment commonly used in the field of magnetic core manufacturing, which is mainly used to accurately classify powder such as magnetic powder according to particle size, to ensure that the powder used to make magnetic cores is uniform in particle size and free of impurities, so that the magnetic cores produced can have more excellent performance.In the prior art, the screen mesh in the powder screening machine is prone to clogging after a period of use, so maintenance personnel need to regularly disassemble and maintain the screen mesh in the powder screening machine.After the maintenance personnel remove the clogging on the screen mesh, they will reassemble the screen mesh into the powder screening machine.The disassembly and assembly process of the screen mesh is relatively cumbersome, which requires maintenance personnel to spend a lot of time disassembling and assembling the screen mesh, thereby reducing the efficiency of maintenance personnel in maintaining the powder screening machine. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art.Therefore, the utility model provides a powder screening machine, which is beneficial to improve the efficiency of maintenance personnel in maintaining the powder screening machine.

[0004] The powder screening machine according to the embodiment of the utility model, including box, material box, first screening subassembly, second screening subassembly and vibrating device. The first and second avoiding holes are respectively arranged on the left and right side walls of the box; the material box is arranged in the box and abuts against the inner bottom wall of the box, and the material box can move in the box in the up-down direction, so that the material box can be pulled out of the box; the first screening subassembly comprises a first frame body, a first screen and a first material guide plate, the first screen is arranged obliquely, the first screen is arranged in the first frame body, the first material guide plate is arranged on the first frame body, the powder on the first screen can slide onto the first material guide plate, the first material guide plate is arranged in the first avoiding hole, the first frame body is arranged in the box and abuts against the upper end of the material box, so that the powder passing through the first screen can fall into the material box, and the first frame body can move in the box in the up-down direction, so that the first frame body can be pulled out of the box; the second screening subassembly comprises a second frame body, a second screen and a second material guide plate, the second screen is arranged obliquely, the aperture of the second screen is larger than that of the first screen, the second screen is arranged in the second frame body, the second material guide plate is arranged on the second frame body, the powder on the second screen can slide onto the second material guide plate, the second material guide plate is arranged in the second avoiding hole, the second frame body is arranged in the box and abuts against the upper end of the first frame body, so that the powder passing through the second screen can fall on the first screen, and the second frame body can move in the box in the up-down direction, so that the second frame body can be pulled out of the box; the vibrating device is used for driving the box to vibrate.

[0005] At least has the following beneficial effects:

[0006] When maintenance is required on the powder screening machine, the maintenance personnel can first stop the vibration device, and then lift and pull out the second frame, first frame, and material box from the housing in sequence to quickly disassemble the second and first screens. After the maintenance personnel have cleaned the blockages on the second and first screens, they should first place the material box into the housing, positioning it against the inner bottom wall of the housing. After the material box is placed, the maintenance personnel can then place the first frame into the housing, placing it against the top of the material box, and ensuring that the first guide plate on the first frame passes through the first clearance hole on the side wall of the housing. After the first frame is placed, the maintenance personnel can then place the second frame into the housing, placing it against the top of the first frame, and ensuring that the second guide plate on the second frame passes through the second clearance hole on the side wall of the housing, thus completing the quick installation of the second and first screens. When maintenance personnel need to perform maintenance on the powder screening machine, they can lift and pull out the second frame, the first frame, and the material box sequentially from the housing to quickly disassemble the second screen and the first screen. After maintenance on the second and first screens, the maintenance personnel can put the material box, the first frame, and the second frame back into the housing sequentially to quickly install the second screen and the first screen. The quick disassembly and assembly of the first and second screens in this powder screening machine improves the efficiency of maintenance personnel in performing maintenance on the powder screening machine.

[0007] The powder screening machine according to an embodiment of the present utility model further includes a cover plate and a fastening assembly. One end of the cover plate is hinged to the upper end of the box body, and the other end of the cover plate can be connected to the upper end of the box body through the fastening assembly, so that the cover plate can cover the upper end of the box body.

[0008] According to the powder screening machine of this utility model embodiment, the cover plate is provided with a pressing block. The cover plate abuts against the upper end of the second frame through the pressing block, so that the second frame is pressed against the first frame, the first frame is pressed against the material box, and the material box is pressed against the inner bottom wall of the box.

[0009] According to the powder screening machine of this utility model embodiment, the cover plate is provided with an observation window.

[0010] According to the powder screening machine of this utility model embodiment, the cover plate is provided with a sealing ring, and the cover plate abuts against the upper end of the box body through the sealing ring. The sealing ring is used to seal the gap between the cover plate and the box body.

[0011] According to the powder screening machine of this utility model embodiment, the upper end of the second frame is provided with a second handle.

[0012] According to the powder screening machine of this utility model embodiment, the upper end of the first frame is provided with a first handle, and the lower end of the second frame is provided with a second clearance groove, wherein the first handle can be inserted into the second clearance groove.

[0013] According to the powder screening machine of this utility model embodiment, the upper end of the material box is provided with a third handle, the lower end of the first frame is provided with a first clearance groove, and the third handle can be inserted into the first clearance groove.

[0014] According to the powder screening machine of this utility model embodiment, the second screen is inclined to the lower right, and the first screen is inclined to the lower left.

[0015] The powder screening machine according to an embodiment of the present invention further includes a first collecting box and a second collecting box. The first collecting box is disposed below the first guide plate and is used to collect powder that slides off the first guide plate. The second collecting box is disposed below the second guide plate and is used to collect powder that slides off the second guide plate. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of the powder screening machine according to an embodiment of the present invention;

[0018] Figure 2 This is a structural schematic diagram of the powder screening machine according to another embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the second screening component, the first screening component, and the material box stacked from top to bottom in the powder screening machine of this utility model embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of the second screening component, the first screening component, and the material box in the powder screening machine of this utility model embodiment;

[0021] Icon labels:

[0022] First screening component 100; first frame 110; first clearance groove 111; first screen 120; first guide plate 130; first handle 140;

[0023] Second screening component 200; second frame 210; second clearance groove 211; second screen 220; second guide plate 230; second handle 240;

[0024] Material box 300; Third handle 310;

[0025] Box body 400; First clearance hole 410; Second clearance hole 420; Cover plate 430; Observation window 431; Fastening assembly 440;

[0026] Vibration device 500. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figures 1 to 4 This utility model discloses a powder screening machine, including a housing 400, a material box 300, a first screening component 100, a second screening component 200, and a vibration device 500.

[0031] The left and right side walls of the housing 400 are respectively provided with a first clearance hole 410 and a second clearance hole 420. The material box 300 is disposed inside the housing 400 and abuts against the inner bottom wall of the housing 400. The material box 300 can move in the vertical direction inside the housing 400 so that the material box 300 can be pulled out from the housing 400. The first screening assembly 100 includes a first frame 110, a first screen 120, and a first guide plate 130. The first screen 120 is inclined and located inside the first frame 110. The first guide plate 130 is located on the first frame 110. Powder on the first screen 120 can slide onto the first guide plate 130. The first guide plate 130 passes through the first clearance hole 410. The first frame 110 is located inside the box 400 and abuts against the upper end of the material box 300 so that powder passing through the first screen 120 can fall into the material box 300. The first frame 110 can move vertically within the box 400 so that the first frame 110 can be pulled out from the box 400. The second screening assembly 200 includes a second frame 210, a second screen 220, and a second guide plate 230. The second screen 220 is inclined and has a larger aperture than the first screen 120. The second screen 220 is located inside the second frame 210, and the second guide plate 230 is located on the second frame 210. Powder on the second screen 220 can slide onto the second guide plate 230, which passes through a second clearance hole 420. The second frame 210 is located inside the housing 400 and abuts against the upper end of the first frame 110, so that powder passing through the second screen 220 can fall onto the first screen 120. The second frame 210 can move vertically within the housing 400, allowing it to be pulled out of the housing 400. A vibration device 500 is used to drive the housing 400 to vibrate.

[0032] It should be explained that in existing technologies, screens are often fixed to powder screening machines using bolts. When disassembling and reassembling the screen, maintenance personnel must unscrew or tighten multiple bolts one by one, resulting in a significant time commitment and reduced efficiency in maintaining the powder screening machine. Furthermore, the confined internal space of the powder screening machine makes it difficult for maintenance personnel to use tools and perform manual movements, increasing the difficulty and time required for screen disassembly and reassembly, and further reducing the efficiency of maintenance.

[0033] In this embodiment of the invention, the vibration device 500 includes a base and a vibrator. The base is connected to the ground, and the vibrator is mounted on the base. The output end of the vibrator is connected to the housing 400, enabling the vibrator to drive the housing 400 to vibrate. Inside the housing 400, from bottom to top, are arranged a material box 300, a first screening assembly 100, and a second screening assembly 200. The material box 300 abuts against the inner bottom wall of the housing 400. The first frame 110 of the first screening assembly 100 abuts against the upper end of the material box 300, and the second frame 210 of the second screening assembly 200 abuts against the upper end of the first frame 110. That is, the material box 300, the first frame 110, and the second frame 210 are stacked inside the housing 400 from bottom to top. After the vibrator drives the housing 400 to vibrate, the material box 300, the first screening assembly 100, and the second screening assembly 200 inside the housing 400 can vibrate synchronously.

[0034] When powder needs to be sieved, the vibrator is activated. The operator then pours the powder into the second frame 210, causing it to fall onto the second screen 220. Under the vibration of the second screen 220, powder particles smaller than the mesh size pass through and fall onto the first screen 120. Powder particles larger than the mesh size remain on the second screen 220 and, under the vibration, slide onto the second guide plate 230. After falling onto the first screen 120, under the vibration of the first screen 120, powder particles smaller than the mesh size pass through and fall into the material box 300. Powder particles larger than the aperture of the first screen 120 will remain on the first screen 120. Under the vibration of the first screen 120, the powder particles remaining on the first screen 120 will slide onto the first guide plate 130. Since the aperture of the second screen 220 is larger than that of the first screen 120, the powder is graded and screened. In this embodiment of the invention, the powder screening machine also includes a first collection box and a second collection box. The first collection box is located below the first guide plate 130 and is used to collect the powder particles that slide off the first guide plate 130. The second collection box is located below the second guide plate 230 and is used to collect the powder particles that slide off the second guide plate 230. In this embodiment of the invention, before starting the vibration device 500, the operator must first place the first collection box and the second collection box below the first guide plate 130 and the second guide plate 230, respectively. Both the first collection box and the second collection box are placed on the ground so that they can collect the powder particles. Once the first and second collection boxes are full of powder, the operator will replace them with empty ones; this will not be elaborated further here. The powder collected in the first collection box is mainly used for making magnetic cores.

[0035] Understandably, when maintenance is required on the powder screening machine, the maintenance personnel can first stop the vibrating device 500, and then sequentially lift and pull out the second frame 210, the first frame 110, and the material box 300 from the housing 400 to quickly disassemble the second screen 220 and the first screen 120. After the maintenance personnel have cleaned the blockages on the second screen 220 and the first screen 120, they should first place the material box 300 into the housing 400, so that the material box 300 is placed on the inner bottom wall of the housing 400. After the material box 300 is placed, the maintenance personnel can then place the first frame 110 into the housing 400, so that the first frame 110 rests against the upper end of the material box 300, and the first guide plate 130 on the first frame 110 passes through the first clearance hole 410 on the side wall of the housing 400. After the first frame 110 is placed, maintenance personnel can put the second frame 210 into the housing 400, so that the second frame 210 rests against the upper end of the first frame 110, and the second guide plate 230 on the second frame 210 passes through the second clearance hole 420 on the side wall of the housing 400 to complete the quick installation of the second screen 220 and the first screen 120. When maintenance personnel need to maintain the powder screening machine, they can lift and pull out the second frame 210, the second frame 210 and the material box 300 from the housing 400 in sequence to complete the quick disassembly of the second screen 220 and the first screen 120. After the maintenance of the second screen 220 and the first screen 120 is completed, the maintenance personnel can put the material box 300, the first frame 110 and the second frame 210 into the housing 400 in sequence to complete the quick installation of the second screen 220 and the first screen 120. The first screen 120 and the second screen 220 in this powder screening machine can be quickly disassembled and assembled, which helps to improve the efficiency of maintenance personnel in maintaining the powder screening machine.

[0036] refer to Figure 4 The second screen 220 is tilted to the lower right, and the first screen 120 is tilted to the lower left. It is understood that the tilting of both the second screen 220 and the first screen 120 allows the powder on the second screen 220 to slide smoothly onto the second guide plate 230, and the powder on the first screen 120 to slide smoothly onto the first guide plate 130. Furthermore, the different tilting directions of the second screen 220 and the first screen 120 increase the movement path of the powder, ensuring that the powder is fully screened by both screens.

[0037] refer to Figure 1 and Figure 2The powder screening machine also includes a cover plate 430 and a fastening assembly 440. One end of the cover plate 430 is hinged to the upper end of the housing 400, and the other end of the cover plate 430 can be connected to the upper end of the housing 400 through the fastening assembly 440, so that the cover plate 430 can cover the upper end of the housing 400. Understandably, when it is necessary to pour powder into the second frame 210, the operator can operate the fastening assembly 440 to disengage the other end of the cover plate 430 from the upper end of the housing 400. Then, the operator can flip the cover plate 430 and open the upper end of the housing 400, at which point the powder can be poured into the second frame 210. After pouring, the operator can flip the cover plate 430 to cover the upper end of the housing 400, and then connect the other end of the cover plate 430 to the upper end of the housing 400 through the fastening assembly 440. At this point, the vibration device 500 can be started to begin screening. The cover plate 430 serves to shield the dust inside the housing 400, preventing dust from spreading into the work area. In this embodiment of the invention, the fastening component 440 is a common flat-mouth hook-and-loop fastener. The fastener is installed on the other end of the cover plate 430, and the buckle body is installed on the upper end of the housing 400. The fastener can engage with the buckle body, so that the other end of the cover plate 430 is fastened to the housing 400. Further details are omitted here. As an embodiment of the invention, the cover plate 430 is provided with a sealing ring. The cover plate 430 abuts against the upper end of the housing 400 through the sealing ring, and the sealing ring is used to seal the gap between the cover plate 430 and the housing 400. It can be understood that after the cover plate 430 is closed on the upper end of the housing 400, the cover plate 430 abuts against the upper end of the housing 400 through the sealing ring. The sealing ring seals the gap between the cover plate 430 and the housing 400, preventing dust inside the housing 400 from passing through the gap between the cover plate 430 and the housing 400 and spreading into the work space.

[0038] In this embodiment of the invention, a pressing block is provided on the cover plate 430. The cover plate 430 abuts against the upper end of the second frame 210 through the pressing block, so that the second frame 210 is pressed against the first frame 110, the first frame 110 is pressed against the material box 300, and the material box 300 is pressed against the inner bottom wall of the box 400. It can be understood that after the operator closes the cover plate 430 on the upper end of the box 400, that is, after the other end of the cover plate 430 is fastened to the upper end of the box 400, the pressing block on the cover plate 430 can abut against the second frame 210 inside the box 400. The clamping blocks on the cover plate 430 can apply a downward pushing force to the second frame 210, so that the second frame 210 can press against the first frame 110, the first frame 110 presses against the material box 300, and the material box 300 presses against the inner bottom wall of the box 400. This allows the second frame 210, the first frame 110, and the material box 300 to be stably placed inside the box 400, so as to avoid the second frame 210, the first frame 110, and the material box 300 colliding with the inner wall of the box 400 during the vibration of the box 400. As an embodiment of this utility model, there are two clamping blocks, which are respectively located at the left and right ends of the cover plate 430, and the two clamping blocks abut against the left and right sides of the upper end of the second frame 210.

[0039] refer to Figure 1 and Figure 2 The cover plate 430 is provided with an observation window 431. Understandably, the operator can see the remaining powder on the second screen 220 through the observation window 431 so that after the powder is screened, the operator can pour the next batch of powder into the second frame 210 in a timely manner.

[0040] refer to Figure 3 and Figure 4The upper end of the second frame 210 is provided with a second handle 240. The upper end of the first frame 110 is provided with a first handle 140, and the lower end of the second frame 210 is provided with a second clearance groove 211, into which the first handle 140 can be inserted. The upper end of the material box 300 is provided with a third handle 310, and the lower end of the first frame 110 is provided with a first clearance groove 111, into which the third handle 310 can be inserted. Understandably, the first handle 140, the second handle 240, and the third handle 310 provide convenience for maintenance personnel to move the first frame 110, the second frame 210, and the material box 300. Maintenance personnel can lift or put the first frame 110 out of the box 400 through the first handle 140 on the first frame 110, and the second handle 240 on the second frame 210, and the third handle 310 on the material box 300.

[0041] On the other hand, the first frame 110 is provided with a first clearance groove 111 for the insertion of the third handle 310, and the second frame 210 is provided with a second clearance groove 211 for the insertion of the first handle 140, so that the first frame 110 can be firmly abutted against the material box 300, and the second frame 210 can be firmly abutted against the first frame 110, ensuring that the material box 300, the first frame 110, and the second frame 210 can be tightly stacked together. In this embodiment of the present invention, the first frame 110 is provided with a first handle 140 at both the front and rear ends, the second frame 210 is provided with a second handle 240 at both the front and rear ends, and the material box 300 is provided with a third handle 310 at both the front and rear ends.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A powder screening machine, characterized in that, include: The housing has a first clearance hole and a second clearance hole respectively opened on its left and right side walls; A material box is disposed inside the box and abuts against the inner bottom wall of the box. The material box is movable in the vertical direction inside the box so that it can be pulled out from the box. The first screening assembly includes a first frame, a first screen, and a first guide plate. The first screen is inclined and located within the first frame. The first guide plate is located on the first frame, allowing powder on the first screen to slide onto the first guide plate. The first guide plate passes through a first clearance hole. The first frame is located within the box and abuts against the upper end of the material box, allowing powder passing through the first screen to fall into the material box. The first frame can move vertically within the box, allowing it to be pulled out of the box. The second screening assembly includes a second frame, a second screen, and a second guide plate. The second screen is inclined and has a larger aperture than the first screen. The second screen is located within the second frame, and the second guide plate is located on the second frame. Powder on the second screen can slide onto the second guide plate, which passes through a second clearance hole. The second frame is located within the box and abuts against the upper end of the first frame, so that powder passing through the second screen can fall onto the first screen. The second frame can move vertically within the box, allowing it to be pulled out of the box. A vibration device is used to drive the housing to vibrate.

2. The powder screening machine according to claim 1, characterized in that: It also includes a cover plate and a fastening assembly. One end of the cover plate is hinged to the upper end of the box body, and the other end of the cover plate can be connected to the upper end of the box body through the fastening assembly, so that the cover plate can cover the upper end of the box body.

3. The powder screening machine according to claim 2, characterized in that: The cover plate is provided with a pressing block, and the cover plate abuts against the upper end of the second frame through the pressing block, so that the second frame is pressed against the first frame, the first frame is pressed against the material box, and the material box is pressed against the inner bottom wall of the box.

4. The powder screening machine according to claim 2, characterized in that: The cover plate is equipped with an observation window.

5. The powder screening machine according to claim 2, characterized in that: The cover plate is provided with a sealing ring, and the cover plate abuts against the upper end of the box body through the sealing ring. The sealing ring is used to seal the gap between the cover plate and the box body.

6. The powder screening machine according to claim 1, characterized in that: The upper end of the second frame is provided with a second handle.

7. The powder screening machine according to claim 6, characterized in that: The upper end of the first frame is provided with a first handle, and the lower end of the second frame is provided with a second clearance groove, wherein the first handle can be inserted into the second clearance groove.

8. The powder screening machine according to claim 7, characterized in that: The upper end of the material box is provided with a third handle, and the lower end of the first frame is provided with a first clearance groove, wherein the third handle can be inserted into the first clearance groove.

9. The powder screening machine according to claim 1, characterized in that: The second screen is tilted to the lower right, and the first screen is tilted to the lower left.

10. The powder screening machine according to claim 1, characterized in that: It also includes a first collection box and a second collection box. The first collection box is located below the first guide plate and is used to collect powder that slides off the first guide plate. The second collection box is located below the second guide plate and is used to collect powder that slides off the second guide plate.

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