CN212370352U

CN212370352U - Silicon nitride powder grinding machine

Info

Publication number: CN212370352U
Application number: CN202020909632.0U
Authority: CN
Inventors: 贾钰浦; 王南园; 王泽坤
Original assignee: Henan Ruixin Tongchuang High Tech Material Technology Co ltd
Current assignee: Henan Ruixin Tongchuang High Tech Material Technology Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-01-19
Anticipated expiration: 2030-05-26

Abstract

A silicon nitride powder grinder; the grinding device is arranged at the upper end of the right side of the box body, the grinding device comprises a grinding box, a left grinding wall arranged at the left end of the grinding box, a right grinding wall arranged at the right end of the grinding box and a first rotating shaft arranged between the left grinding wall and the right grinding wall are arranged in the grinding box, a first feeding port is further formed in the upper end of the grinding box, a rotating disc is arranged on the first rotating shaft, a plurality of rotor cutters are arranged on the outer side of the rotating disc, arc-shaped screening nets are further arranged at the lower ends of the left grinding wall and the right grinding wall, and an anti-splashing device is further arranged in the feeding port; through with the shearing type and garrulous and mill the back and form suitable powder particle diameter, be fit for the brittle material characteristics of silicon nitride granule, crushing efficiency is high, crushing effect is good, and the pressure that the thin broken single structure of device bore is little, long service life, the device of preventing splashing not only reduced the loss of silicon nitride granule but also protected staff's personal safety.

Description

Silicon nitride powder grinding machine

Technical Field

The utility model relates to a silicon nitride processing technology field, in particular to silicon nitride powder grinds machine.

Background

Silicon nitride is an important structural ceramic material, is a superhard substance, has lubricity and abrasion resistance, is an atomic crystal, resists oxidation at high temperature, can resist cold and hot impact, is heated to more than 1000 ℃ in the air, is rapidly cooled and then rapidly heated, and cannot be cracked; silicon nitride is often milled during processing to accommodate subsequent processing.

The ball-milling device of original silicon nitride goods is simple when to the ball-milling of silicon nitride goods and is put the silicon nitride goods and carry out the ball-milling operation in the ball-milling bowl, consume time to too big silicon nitride goods ball-milling, ball-milling inefficiency, bring inconvenience for workman's ball-milling operation, influence the work progress, ordinary sand mill process velocity is efficient fast, but the cost is higher, because generally need dozens of kilograms in few ink marks to grind the medium ball, sand mill's discharge gate ceramic part fragile, the loss of grinding the medium ball is also big, so with high costs.

A silicon nitride powder grinder is required to solve this problem.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide a silicon nitride powder grinding machine, which effectively solves the above problems.

The technical scheme who solves is, the utility model discloses a box, be equipped with comminution device, screening plant and combination milling equipment on the box, comminution device installs in the right side upper end of box, comminution device includes the chopping box, be equipped with the left wall of grinding installed at the chopping box left end in the chopping box, install the right wall of grinding installed at the chopping box right-hand member and install the first axis of rotation between left wall of grinding and right wall, the upper end of chopping box still is equipped with first feed inlet, be equipped with the rolling disc on the first axis of rotation, a plurality of rotor cutters are installed to the outside of rolling disc, be equipped with wear-resisting welt on left wall of grinding and the right wall of grinding, the lower extreme of left wall of grinding and right wall of grinding still is equipped with arc screening net, still be equipped with anti-splash device in the feed;

the screening device comprises a first screen and a second screen which are obliquely arranged in a box body, wherein the first screen and the second screen are respectively provided with a first mesh surface, a second mesh surface, a third mesh surface and a fourth mesh surface, the diameters of the first mesh surface, the second mesh surface, the third mesh surface and the fourth mesh surface are sequentially increased, the lower ends of the second mesh surface, the third mesh surface and the fourth mesh surface of the first screen are rotatably provided with a first material supporting plate through a first rotating shaft, the first rotating shaft is provided with a self-locking control device, and the lower ends of the first mesh surface, the second mesh surface, the third mesh surface and the fourth mesh surface of the second screen are provided with second material supporting plates;

the lower side of the combined grinding device is also provided with a storage cavity.

The utility model has the advantages that: the utility model discloses think about novelty, the structure is ingenious, through with shear type and garrulous and mill the back and form suitable powder particle diameter, be fit for the brittle material characteristics of silicon nitride granule, crushing efficiency is high, crushing effect is good, and the pressure that the thin broken single structure of device bore is little, long service life, the device of preventing splashing not only reduced the loss of silicon nitride granule and still protected staff's personal safety.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a plan view of the splash guard of the present invention.

Fig. 3 is a sectional view taken along a line a-a in fig. 2 according to the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Example (b):

as shown in figures 1 to 3, the utility model comprises a box body 1, a shredding device, a screening device and a combined grinding device are arranged on the box body 1, the shredding device is arranged at the upper end of the right side of the box body 1 and comprises a shredding box 2, a left grinding wall 3 arranged at the left end of the shredding box 2, a right grinding wall 4 arranged at the right end of the shredding box 2 and a first rotating shaft arranged between the left grinding wall 3 and the right grinding wall 4 are arranged in the shredding box 2, a first feed inlet 5 is also arranged at the upper end of the shredding box 2, the right end surface of the left grinding wall 3 and the left end surface of the right grinding wall 4 are inclined planes, silicon nitride particles falling on the left grinding wall 3 and the right grinding wall 4 can accurately fall on the first rotating shaft, a rotating disc 6 is arranged on the first rotating shaft, a plurality of rotor cutters 7 are arranged at the outer side of the rotating disc 6, the rotor cutters 7 are rotatably arranged on the rotating disc 6, when the first rotating shaft rotates, the rotor cutter 7 is thrown out by centrifugal force to strike and crush silicon nitride particles falling on the rotating disc 6, wear-resistant lining plates are arranged on the left grinding wall 3 and the right grinding wall 4, the rotor cutter 7 is conveniently matched to crush the silicon nitride particles, the wear-resistant lining plates are detachably arranged on the right grinding wall 4 and are convenient to replace, an arc-shaped screening net 8 is further arranged at the lower ends of the left grinding wall 3 and the right grinding wall 4, the falling of overlarge silicon nitride particles is avoided, and an anti-splashing device is further arranged in the feeding port and is used for allowing flying stones generated when the cutting device crushes raw materials to fly out through the feeding port;

the screening device comprises a first screen 9 and a second screen 10 which are obliquely arranged in a box body 1, wherein the first screen 9 and the second screen 10 are respectively provided with a first mesh surface 11, a second mesh surface 12, a third mesh surface 13 and a fourth mesh surface 14, the diameters of the first mesh surface 11, the second mesh surface 12, the third mesh surface 13 and the fourth mesh surface 14 are sequentially increased, the first screen 9 is provided with a first material supporting plate 15 at the lower ends of the second mesh surface 12, the third mesh surface 13 and the fourth mesh surface 14 through a first rotating shaft in a rotating mode, a self-locking control device is arranged on the first rotating shaft, the second screen 10 is provided with a second material supporting plate 16 at the lower ends of the first mesh surface 11, the second mesh surface 12, the third mesh surface 13 and the fourth mesh surface 14, when the first material supporting plate 15 is in an inclined state, nitrogen silicon particles falling through the second mesh surface 12, the third mesh surface 13 and the fourth mesh surface 14 of the first screen 9 are conveyed to the first mesh surface 11 on the second screen 10 through the first material supporting plate 15, The second mesh surface 12 and the third mesh surface 13 enable the silicon nitride particles to be screened again with larger aperture, which can effectively improve the screening effect, when the first material supporting plates 15 are kept in a vertical state, silicon nitride particles falling through the first mesh surfaces 11, the second mesh surfaces 12, the third mesh surfaces 13 and the fourth mesh surfaces 14 on the first screen 9 directly fall into the first mesh surfaces 11, the second mesh surfaces 12, the third mesh surfaces 13 and the fourth mesh surfaces 14 of the second screen 10, so that the screening efficiency can be faster, the second material supporting plates 16 are connected with a plurality of feed inlets of the combined milling device, and the silicon nitride particles passing through the second material supporting plates 16, the first mesh surfaces 11, the second mesh surfaces 12, the third mesh surfaces 13 and the fourth mesh surfaces 14 respectively enter different milling devices in the combined milling device through the plurality of feed inlets of the combined milling device;

the lower side of the combined grinding device is also provided with a storage cavity 17.

The combined powder grinding device comprises a first cavity vertically arranged on the lower sides of a first mesh surface 11 and a second mesh surface 12 of a second screen 10 and a second cavity vertically arranged on the lower sides of a third mesh surface 13 and a fourth mesh surface 14 of the second screen 10, a first cavity 18, a second cavity 19, a third cavity 20 and a fourth cavity 21 which are respectively arranged on the lower sides of the first mesh surface 11, the second mesh surface 12, the third mesh surface 13 and the fourth mesh surface 14 are respectively arranged in the first cavity and the second cavity, a second material supporting plate 16 respectively forms a second feeding hole with the side walls of the first cavity 18, the second cavity 19, the third cavity 20 and the fourth cavity 21, a first powder grinding device, a second powder grinding device, a third powder grinding device and a fourth powder grinding device are respectively arranged in the first cavity 18, the second cavity 19, the third cavity 20 and the fourth cavity 21, so that silicon nitride particles respectively enter the first powder grinding device through the second feeding hole, In the second milling equipment, third device and fourth milling equipment, first milling equipment includes horizontal installation the mill dish 22 in first cavity 18, the downside of mill dish 22 is equipped with rotation motor 23, second axis of rotation 24 on rotation motor 23 extends to the upside of mill dish 22, be equipped with a plurality of support columns 25 on the second axis of rotation 24, preferably two support columns 25, the tip of support column 25 is installed and is ground emery wheel 26, still be equipped with the dead slot on the mill dish 22, be equipped with metal filter 27 in the dead slot, grind emery wheel 26 and grind silicon nitride particle through rotating motor 23 drive metal filter 27 on mill dish 22, silicon nitride powder that is ground powder passes through metal filter 27 and gets into in the storage cavity 17, the structure of second milling equipment, third milling equipment and fourth milling equipment is the same with first milling equipment, second milling equipment, The mesh diameter of metal filters 27 in third milling equipment and the fourth milling equipment increases in proper order for the particle diameter of the silicon nitride powder that forms is different through first milling equipment, second milling equipment, third device and the grinding of fourth milling equipment, forms the product of different grades, uses in multiple route.

The anti-splashing device comprises a mounting frame horizontally mounted in the first feed port 5, the mounting frame comprises a vertical fixing rod 29, a plurality of connecting rods 30 in a straight prism shape are arranged around the fixing rod 29, namely the side surfaces of the connecting rods 30 are vertical, the end parts of the connecting rods 30 are fixed on the side wall of the first feed port 5, a sector plate 31 is rotatably mounted between every two connecting rods 30, an auxiliary plate 32 is arranged at the lower end of the fixing rod 29, a plurality of springs 33 are arranged on the auxiliary plate 32, the upper ends of the springs 33 are connected with the sector plate 31, when silicon nitride particles fall on the sector plate 31, the sector plate 31 overcomes the elastic force of the springs 33 to overturn downwards under the action of gravity, the silicon nitride particles fall through a gap between the two connecting rods 30, when the silicon nitride particles fall, the silicon nitride particles block the gap, so that the silicon nitride particles driven by the turntable can not leave the first feed port, when the silicon nitride particles fall down completely, the fan-shaped plate 31 blocks the gaps completely under the action of the spring 33, and the silicon nitride particles are prevented from flying out.

The self-locking control device comprises a working box arranged on the front side of a box body 1, a first gear is installed at one end of a first rotating shaft extending into the working box, a first support 34 is arranged at the left end of the box body 1 or the left end of the working box, a second rotating shaft is arranged on the first support 34, a second gear is arranged on the second rotating shaft, a first toothed chain is installed on the first gear and the second gear, a worm wheel is further arranged on the second rotating shaft, a second support 35 is further arranged at the left end of the box body 1 or the left end of the working box, a worm meshed with the worm wheel is installed on the second support 35, the first rotating shaft is controlled to rotate by rotating the worm, and a handle is installed at the end of the worm.

The upper side of box 1 on be equipped with observation window 36, observation window 36 is the door that can open and shut for observe the rotation condition of first flitch 15 and select the effect of screening with the control.

The utility model discloses when using, in sending into the comminution device with the silicon nitride granule through first feed inlet 5, accomplish the shearing for the silicon nitride granule forms the tiny particle, be convenient for later mill, the silicon nitride granule after the shearing loops through the second feed inlet through screening plant and falls in first milling equipment, second milling equipment, third milling equipment and fourth milling equipment, mill the silicon nitride granule, pulverize the silicon nitride powder after the powder and fall in storage cavity 17 through metal filters 27, collect.

The foregoing detailed description/examples are specific embodiments of the present invention, and are intended to be illustrative of the principles of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include those which make any obvious replacement or modification of the embodiments described herein, and all of which are within the scope of the present invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A silicon nitride powder grinding machine comprises a box body (1), and is characterized in that a chopping device, a screening device and a combined grinding device are arranged on the box body (1), the chopping device is arranged at the upper end of the right side of the box body (1) and comprises a chopping box (2), a left grinding wall (3) arranged at the left end of the chopping box (2) is arranged in the chopping box (2), a right grinding wall (4) arranged at the right end of the chopping box (2) and a first rotating shaft arranged between the left grinding wall (3) and the right grinding wall (4), a first feeding hole (5) is further arranged at the upper end of the chopping box (2), a rotating disc (6) is arranged on the first rotating shaft, a plurality of rotor cutters (7) are arranged on the outer side of the rotating disc (6), wear-resistant lining plates are arranged on the left grinding wall (3) and the right grinding wall (4), an arc-shaped screening net (8) is further arranged at the lower ends of the left grinding wall (3) and the right grinding, an anti-splashing device is also arranged in the feed inlet;

the screening device comprises a first screen (9) and a second screen (10) which are obliquely arranged in a box body (1), wherein the first screen (9) and the second screen (10) are respectively provided with a first mesh surface (11), a second mesh surface (12), a third mesh surface (13) and a fourth mesh surface (14) which are sequentially increased in diameter, the first screen (9) is rotatably provided with a first material supporting plate (15) at the lower ends of the second mesh surface (12), the third mesh surface (13) and the fourth mesh surface (14) through a first rotating shaft, a self-locking control device is arranged on the first rotating shaft, and the second screen (10) is provided with a second material supporting plate (16) at the lower ends of the first mesh surface (11), the second mesh surface (12), the third mesh surface (13) and the fourth mesh surface (14);

the lower side of the combined grinding device is also provided with a storage cavity (17).

2. The silicon nitride powder grinding machine according to claim 1, characterized in that the combined powder grinding device comprises a first cavity vertically arranged at the lower side of the first mesh surface (11) and the second mesh surface (12) of the second screen (10) and a second cavity vertically arranged at the lower side of the third mesh surface (13) and the fourth mesh surface (14) of the second screen (10), a first cavity (18), a second cavity (19), a third cavity (20) and a fourth cavity (21) respectively arranged at the lower side of the first mesh surface (11), the second mesh surface (12), the third mesh surface (13) and the fourth mesh surface (14) are respectively arranged in the first cavity and the second cavity, a first powder grinding device, a second powder grinding device, a third powder grinding device and a fourth powder grinding device are respectively arranged in the first cavity (18), the second cavity (19), the third cavity (20) and the fourth cavity (21), first milling equipment includes mill dish (22) of horizontal installation in first cavity (18), the downside of mill dish (22) is equipped with rotation motor (23), second axis of rotation (24) on rotation motor (23) extend the upside of mill dish (22), be equipped with a plurality of support columns (25) on second axis of rotation (24), mill dish (26) are installed to the tip of support column (25), still be equipped with the dead slot on mill dish (22), be equipped with metal filters (27) in the dead slot, second milling equipment, third milling equipment and fourth milling equipment's structure is the same with first milling equipment's structure, first milling equipment, second milling equipment, the mesh diameter of metal filters (27) in third milling equipment and the fourth milling equipment increases in proper order.

3. The silicon nitride powder grinding machine according to claim 1, characterized in that the anti-spattering device comprises a mounting frame horizontally mounted in the first feed port (5), the mounting frame comprises a vertical fixing rod (29), a plurality of connecting rods (30) in a straight prism shape are arranged around the fixing rod (29), the end parts of the connecting rods (30) are fixed on the side wall of the first feed port (5), a sector plate (31) is rotatably mounted between every two connecting rods (30), an auxiliary plate (32) is arranged at the lower end of the fixing rod (29), a plurality of springs (33) are arranged on the auxiliary plate (32), and the upper ends of the springs (33) are connected with the sector plate (31).

4. The silicon nitride powder grinding machine of claim 1, wherein the self-locking control device comprises a working box arranged at the front side of the box body (1), a first gear is installed at one end of each first rotating shaft extending into the working box, a first support (34) is arranged at the left end of the box body (1) or the left end of the working box, a second rotating shaft is arranged on the first support (34), a second gear is arranged on the second rotating shaft, a first toothed chain is installed on the first gear and the second gear, a worm wheel is further arranged on the second rotating shaft, a second support (35) is further arranged at the left end of the box body (1) or the left end of the working box, a worm meshed with the worm wheel is installed on the second support (35), and a handle is installed at the end of the worm.

5. The silicon nitride powder grinder according to claim 1, wherein an observation window (36) is provided on the upper side surface of the box body (1).