Screen frame assembly on metal powder screening machine

Abstract

The utility model relates to a screen frame assembly on a metal powder screening machine, which comprises a plurality of groups of stacked screen frames, a conical necking opening is formed on the lower side edge of each screen frame, a conical flaring opening is formed on the upper side edge of each screen frame, a plurality of vertical ribs which are annularly distributed are formed on the outer wall of each screen frame, and the ribs are arranged on the outer wall of each screen frame. The necking opening of the screen frame on the upper layer is inserted into the flaring opening of the screen frame on the lower layer and abuts against the inner wall of the flaring opening. Connecting lug seats are fixedly connected to the outer walls of the left side and the right side of the upper portion of the screen frame respectively, the upper portions of the connecting lug seats extend out of the flaring to form inserting openings, and bolts are in threaded connection with the interiors of internal thread connecting pipes on one sides of the connecting lug seats. Connecting supporting lugs are formed on the side walls of the lower portions of the ribs, and connecting holes are formed in the connecting supporting lugs. The connecting supporting lugs are inserted into the inserting openings of the connecting lug bases respectively, and the tail ends of the bolts penetrate through the connecting lug bases to be inserted into the connecting openings of the connecting lug bases. The screen frames in the screen frame assembly are matched based on the conical surfaces, and are connected through the inserting buckles and positioned through the bolts, so that mounting and dismounting of the screen frames are greatly facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of powder screening machine, more particularly to a kind of screen frame assembly on metal powder screening machine. BACKGROUND

[0002] Metal powder screening machine is a kind of equipment specially used for screening metal powder, it plays an important role in multiple industries, especially in powder metallurgy, chemical industry, pharmacy, food, building material and other fields. Its working principle usually involves high-frequency vibration generated by vibration exciter, so that powdery material produces fine vibration movement on screen surface, thereby realizing screening and grading;Such as in 3D printing technology, alloy powder after vacuum drying treatment needs to be preliminarily screened, and unqualified powder is removed to ensure the quality of subsequent processing;And the current screening machine is provided with multiple screen frames arranged in layers, screen mesh is arranged on the inner side of screen frame, and the screen frames are fixedly connected together through binding ring, the binding ring is a large clamp structure, and it is troublesome to install and connect the screen frames;Sometimes, alloy powder needs to be screened to different degrees, so different screen meshes need to be replaced, and the screen frames need to be disassembled and installed when replacing screen mesh, which is troublesome, so a structure for conveniently installing and dismounting screen frame needs to be designed. SUMMARY

[0003] The utility model discloses a kind of screen frame assemblies on metal powder screening machine, the screen frame between the screen frame assembly is convenient to install and dismount, and the strength of screen frame is high simultaneously.

[0004] A kind of screen frame assembly on metal powder screening machine, screen frame assembly includes several groups of screen frames arranged in layers, the lower side of screen frame is shaped with conical necking, the upper side is shaped with conical flaring, the outer wall of screen frame is shaped with several vertical and annularly distributed ribs, the upper end of rib and the outer wall of flaring are shaped together, and the lower end and the outer wall of necking are in the same conical surface;

[0005] The necking of the screen frame of upper layer is inserted in the flaring of the screen frame of lower layer and abuts on the inner wall of flaring;Left and right outer walls of the upper part of screen frame are respectively fixedly connected with link lug, the upper part of link lug is extended from flaring and is shaped with spigot, longitudinal internal thread connector is shaped on the link lug on both sides of spigot, and bolt is screwed in the internal thread connector on one side of link lug;Connecting hole is shaped on the side wall of the lower part of rib, and link lug is shaped on the connecting hole;The link lug on the left and right sides of screen frame is respectively inserted in the spigot of link lug, and the end of bolt is inserted in the connecting hole of link lug through link lug.

[0006] Preferably, the center axis of all screen frames on the screen frame assembly is on the same straight line, the number of ribs is even and uniformly distributed in annular shape around the center axis of screen frame.

[0007] Preferably, the outer wall of the front side of the screen frame is fixedly connected with a discharge port communicated with the inner cavity of the screen frame.

[0008] Preferably, the conical angle of the necking portion and the conical angle of the flaring portion of the screen frame are the same.

[0009] Preferably, the top of the screen frame assembly is provided with a dust cover, the dust cover comprises a horizontal circular main cover plate, the inner ring of the main cover plate is formed with a conical inner dust cover plate, and the outer ring of the main cover plate is formed with a conical outer blocking ring, the outer blocking ring abuts against the inner wall of the flaring portion of the screen frame; arc-shaped handles are fixedly connected to the two sides of the main cover plate, the upper end of the handle is inserted into the socket of the connecting lug, and the bolt on the connecting lug is inserted into the handle.

[0010] Preferably, a conical rubber sealing gasket is inserted and fixed on the outer wall of the necking portion, and the necking portion is clamped and fixed between the flaring portion and the necking portion.

[0011] Preferably, a screen is inserted and fixed in the screen frame, and the discharge port in the screen frame is located on the upper side of the screen.

[0012] The screen frame assembly has the advantages that:

[0013] The screen frames in the screen frame assembly are matched based on conical surfaces, combined with the insertion buckle connection and bolt positioning, so that the installation and dismounting of the screen frames are greatly facilitated; meanwhile, the insertion buckle connection structure can improve the strength of the screen frames and facilitate the taking of the screen frames. DRAWINGS:

[0014] Fig. 1 It is a three-dimensional structural schematic view of the utility model;

[0015] Fig. 2 It is a front view structural schematic view of the utility model;

[0016] Fig. 3 It is a side view partial sectional view schematic view of the utility model.

[0017] In the drawing: 1, screen frame; 11, necking portion; 12, flaring portion; 13, rib; 14, connecting lug; 15, connecting hole; 2, connecting lug seat; 21, socket; 22, internally threaded connecting pipe; 3, bolt; 4, discharge port; 5, dust cover; 51, handle. DETAILED DESCRIPTION:

[0018] Embodiment: see Figs. 1 to 3As shown, a kind of screen frame assembly on metal powder screening machine, screen frame assembly includes several groups of laminated screen frame 1, the lower side of screen frame 1 is shaped with conical necking 11, the upper side is shaped with conical flaring 12, the outer wall of screen frame 1 is shaped with several vertical and annular distribution of rib 13, the upper end of rib 13 and the outer wall of flaring 12 are shaped together, the lower end and the outer wall of necking 11 are in the same conical surface;

[0019] The necking 11 of the upper screen frame 1 is inserted in the flaring 12 of the lower screen frame 1 and abuts against the inner wall of the flaring 12;The left and right outer walls of the upper screen frame 1 are respectively fixed with a connecting lug 2, the upper part of the connecting lug 2 extends out of the flaring 12 and is formed with a socket 21, the connecting lug 2 on both sides of the socket 21 is formed with a longitudinal internal thread connector 22, the internal thread connector 22 on one side of the connecting lug 2 is screwed with a bolt 3;The side wall of the lower rib 13 is formed with a connecting lug 14, and the connecting lug 14 is formed with a connecting hole 15;The connecting lug 14 on the left and right sides of the screen frame 1 is respectively inserted in the socket 21 of the connecting lug 2, and the end of the bolt 3 is inserted in the connecting hole 15 of the connecting lug 2.

[0020] The central axes of all screen frames 1 on the screen frame assembly are on the same straight line, the number of ribs 13 is even and uniformly distributed around the central axis of the screen frame 1, and then the ribs 13 are arranged in pairs on the screen frame 1, so that the connecting lug 14 can be arranged in the connecting lug 2 on both sides of the screen frame 1 after part of the screen frame 1 rotates;The connecting strength of the screen frame assembly is improved.

[0021] The outer wall of the front side of the screen frame 1 is fixed with a discharge port 4 connected to the inner cavity of the screen frame 1, and a screen is inserted and fixed in the screen frame 1, the discharge port 4 in the screen frame 1 is located on the upper side of the screen, the mesh number of the upper screen is greater than that of the lower screen, and the copper powder blocked by the screen can be output from the discharge port 4, realizing screening.

[0022] The conical angle of the necking 11 of the screen frame 1 and the conical angle of the flaring 12 are the same, and the necking 11 and the flaring 12 with the same angle are used to automatically center when multiple screen frames 1 are stacked.

[0023] The top of the screen frame assembly is provided with a dust cover 5, and the dust cover 5 includes a horizontal circular main cover plate, a conical inner dust plate is formed in the inner circle of the main cover plate, and a conical outer retaining ring is formed in the outer circle of the main cover plate, and the outer retaining ring abuts against the inner wall of the flaring 12 of the screen frame 1;Arc-shaped handles 51 are fixed on both sides of the main cover plate, the upper end of the handle 51 is inserted in the socket 21 of the connecting lug 2, and the bolt 3 on the connecting lug 2 is inserted in the handle 51, so that the dust cover 5 can be taken and placed through the handle 51, and the handle 51 can also be connected and fixed on the screen frame 1.

[0024] The outer wall of the necking 11 is sleeved and fixed with a conical rubber sealing gasket, the necking 11 is clamped and fixed between the flaring 12 and the necking 11, the sealing property can be improved, and the copper powder can be prevented from running out from between the screen frames 1.

[0025] Working principle: the structure is a screen frame assembly on a metal powder screening machine, the main technical point is embodied in a connecting structure between screen frames 1, the screen frame 1 is provided with various rib strips 13, the rib strip 13 can improve the strength of the screen frame 1, meanwhile, the lower part of the rib strip 13 is provided with a linking lug 14, and the upper part of the screen frame 11 is provided with two groups of linking lug seats 2, the linking lug 14 of the rib strip 13 can be inserted and buckled in the linking lug seat 2 and is installed and fixedly connected based on a bolt 3; convenient installation;

[0026] When disassembling, the bolt 3 is loosened, the screen frame 1 can be taken down by holding the linking lug seat 2 (the outer shape structure of the linking lug seat 2 is similar to a handle for holding, and the screen frame 1 is conveniently lifted by the linking lug seat 2).

[0027] The embodiments are used to illustratively explain the utility model, and are not used to limit the utility model. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the utility model, therefore, the protection scope of the utility model should be as listed in the claims of the utility model.

Claims

1. A screen assembly on a metal powder screening machine, the screen assembly comprising a plurality of sets of screen decks (1) arranged in a stack, characterised in that: The lower side of the screen frame (1) is formed with a conical neck (11), and the upper side is formed with a conical flared portion (12). A plurality of vertical and annularly distributed ribs (13) are formed on the outer wall of the screen frame (1). The upper end of the rib (13) and the outer wall of the flared portion (12) are formed together, and the lower end and the outer wall of the neck (11) are in the same conical surface. The neck (11) of the upper screen frame (1) is inserted into the flared portion (12) of the lower screen frame (1) and abuts against the inner wall of the flared portion (12). Left and right outer walls of the upper part of the screen frame (1) are respectively fixed with a connecting lug (2). The upper part of the connecting lug (2) extends out of the flared portion (12) and is formed with a socket (21). The connecting lug (2) on both sides of the socket (21) is formed with a longitudinal internal thread connector (22). The internal thread connector (22) on one side of the connecting lug (2) is screwed with a bolt (3). The side wall of the lower part of the rib (13) is formed with a connecting lug (14). The connecting lug (14) is formed with a connecting hole (15). The connecting lug (14) on the left and right sides of the screen frame (1) is respectively inserted into the socket (21) of the connecting lug (2). The end of the bolt (3) is inserted into the connecting hole (15) of the connecting lug (2).

2. A screen assembly for a metal powder screening machine as defined in claim 1, wherein: The central axes of all screen frames (1) of the screen frame assembly are on the same straight line. The number of ribs (13) is even and uniformly distributed around the central axis of the screen frame (1).

3. A screen assembly for a metal powder screening machine as defined in claim 1, wherein: The front outer wall of the screen frame (1) is fixed with a discharge port (4) which is connected with the inner cavity of the screen frame (1).

4. A screen assembly for a metal powder screening machine as defined in claim 1, wherein: The conical angle of the neck (11) and the conical angle of the flared portion (12) of the screen frame (1) are the same.

5. A screen assembly for a metal powder screening machine as defined in claim 1, wherein: The top of the screen frame assembly is provided with a dust cover (5). The dust cover (5) includes a horizontal circular main cover plate. The inner ring of the main cover plate is formed with a conical inner dust plate, and the outer ring is formed with a conical outer blocking ring. The outer blocking ring abuts against the inner wall of the flared portion (12) of the screen frame (1). The left and right sides of the main cover plate are fixed with arc-shaped handles (51). The upper end of the handle (51) is inserted into the socket (21) of the connecting lug (2). The bolt (3) on the connecting lug (2) is inserted into the handle (51).

6. A screen assembly for a metal powder screening machine as defined in claim 1, wherein: A conical rubber sealing gasket is inserted and fixed on the outer wall of the neck (11). The neck (11) is clamped and fixed between the flared portion (12) and the neck (11).

7. A screen assembly for a metal powder screening machine as defined in claim 3 wherein: The screen frame (1) is inserted and fixed with a screen. The discharge port (4) in the same screen frame (1) is located on the upper side of the screen.

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