CN211436311U - Nano-material grinding device - Google Patents

Abstract

The utility model discloses a nano-material grinding device, which comprises a supporting frame, wherein a primary grinding cylinder device and a secondary grinding cylinder device with the same structure are arranged on the supporting frame from top to bottom, the primary grinding cylinder device comprises a first grinding shell, a grinding roller mechanism is arranged in the first grinding shell, the grinding roller mechanism is connected with a power mechanism, a first filter screen is arranged at the bottom of the first grinding shell, and a first vibrating screening device is arranged at the lower end of the primary grinding cylinder device; the discharge port at the lower end of the first vibrating screening device is connected with the feed port of the secondary grinding cylinder device, and the lower end of the secondary grinding cylinder device is connected with a second vibrating screening device which has the same structure as the first vibrating screening device; the utility model discloses the device has realized that the material particle diameter reduces gradually in the grinding process, separates in proper order, has avoided the excessive grinding of material, has realized the grinding in-process simultaneously to the abundant grinding of material, evenly grind and screening separation.

Description

A nanomaterial grinding device

technical field

The utility model relates to the technical field of nanometer material processing, in particular to a nanometer material grinding device.

Background technique

Nanomaterials are often referred to as ultrafine powders or ultrafine particles, and their structures are unique, that is, different from individual atoms and bulk materials. This special structure makes it have the characteristics of quantum size effect, volume effect, surface effect, etc., and has a series of new chemical and physical properties, especially in light, electricity, catalysis, etc. It has very important application value.

Among them, the preparation of nanomaterials affects its performance and quality to a large extent, so the preparation process of nanomaterials is particularly important, and the preparation of some nanomaterials requires the raw materials to be fully ground before reaching the required particle size. For the subsequent reaction preparation, the relevant grinding equipment on the market generally puts the nanomaterials into the drum, and the three rollers in the drum conduct grinding, and then discharge the whole after grinding. On the one hand, due to the different grinding degrees, It is easy to cause the problem of excessive grinding; on the other hand, the particle size of the material discharged as a whole after grinding is single, and it is impossible to grind, screen and separate materials with multiple particle size ranges during the grinding process; and the existing nano-grinding force is single , the strength is small, and there is uneven pulverization, which leads to low overall pulverization efficiency. Materials with different particle sizes need to be processed by corresponding grinding equipment, which increases the processing cost, wastes time, and greatly affects the overall production efficiency.

Utility model content

In view of the above-mentioned defects or deficiencies, the purpose of the present invention is to provide a nano-material grinding device, which solves the problems of insufficient grinding, uneven or excessive grinding in the existing grinding device; The materials in the diameter range are ground, screened and separated.

In order to achieve the above purpose, the technical scheme of the present utility model is: a nano-material grinding device, comprising a support frame, and the support frame is installed with a first-level grinding cylinder device and a second-level grinding cylinder device with the same structure from top to bottom. The first-stage grinding cylinder device includes a first grinding shell, a grinding roller mechanism is installed in the first grinding shell, a power mechanism is connected to the grinding roller mechanism, and a first filter is installed at the bottom of the first grinding shell. The lower end of the primary grinding drum device is provided with a first vibrating screening device; the lower end discharge port of the first vibrating screening device is connected to the feeding port of the secondary grinding drum device, and the The lower end of the secondary grinding drum device is connected with a second vibrating screening device with the same structure as the first vibrating screening device; the two sides of the primary grinding drum device and the secondary grinding drum device are respectively mounted on the support frame through fixed shafts The grinding roller mechanism includes three grinding rollers parallel to the axis of the first grinding shell, and the outer walls of the three grinding rollers are tangent to each other; the grinding rollers are rotatably installed on the first grinding roller through the central axis. In the grinding shell, the power mechanism includes three mutually independent motors installed on the outside of the first grinding shell, and the three motors are respectively connected with the three grinding rollers; The screening shell at the lower end of the stage grinding drum device, a vibration mechanism and a screening container are installed in the screening shell, and the vibration mechanism includes a vibration frame matched with the screening container, and an electric motor is installed on the vibration frame. A vibrator; one side of the screening shell is provided with an opening for installing or extracting the screening container; the inner side of the vibrating frame is provided with a clamping slot, and the clamping slot is engaged with the upper edge of the screening container, so The bottom end of the screening container is in contact with the bottom of the vibrating frame; the bottom of the vibrating frame is fixed on the inner wall of the screening housing through the piston sliding rod mechanism, and the vibrating frame is also installed with a first spring for supporting the vibrating frame, One end of the first spring is connected with the vibrating frame, and the other end is connected with the inner wall of the screening shell;

After the material is preliminarily ground by the primary grinding cylinder device, some materials whose particle size is smaller than the aperture of the first filter screen in the primary grinding cylinder device will enter the first vibrating screening device at any time for vibrating screening, and a part of the particle size will be separated out. The materials with a large range are produced and transported, and the remaining part of the materials with a small particle size range enters the secondary grinding drum device for re-grinding, and then vibrates again through the second vibrating screening device to separate and obtain smaller particles. material in the particle size range.

The aperture of the first filter screen at the bottom of the first grinding shell and the aperture of the second filter screen in the secondary grinding cylinder device gradually decrease from top to bottom.

The screening container has a rectangular cavity structure with an upper opening, and the aperture of the third screen at the bottom of the screening container is smaller than the aperture of the first screen of the primary grinding device and larger than the aperture of the second screen of the secondary grinding device. .

The piston sliding rod mechanism includes a piston sleeve connected with the bottom of the vibrating frame, a slidable piston is installed in the piston sleeve, a sliding rod is installed at the lower end of the piston, and the other end of the sliding rod is connected to the screening On the edge of the housing port, the sliding rod is sleeved with a second spring.

Compared with the prior art, the beneficial effects of the present utility model are:

The utility model provides a nanomaterial grinding device. Due to the structural design of the primary grinding drum device, the secondary grinding drum device, and the first vibrating screening device, after the material is preliminarily ground through the primary grinding drum device, the size is smaller than that of the first filtering device. The materials with mesh apertures enter the first vibrating screening device at any time for vibrating screening, and separate a part of the materials with a larger particle size range for production and transport, and the remaining part of the materials with a smaller particle size range enter the secondary grinding. In this grinding and screening process, the over-grinding of the materials is avoided, the materials with different particle sizes are separated, and the materials whose particle size ranges are not up to the standard are fully ground; due to the first The vibrating screening device, through the screening container and the electric vibrator, sieves and separates the materials of different particle sizes. The sieved materials are more uniform and refined, and at the same time, the excessive grinding of the materials is avoided, and it is beneficial to those that do not meet the standard. The material is fully ground again, and then vibrated and sieved again through the second vibrating screening device, and separated to obtain a material with a smaller particle size range, which realizes that the particle size of the material gradually decreases during the grinding process, and is separated in sequence, avoiding the need for materials. At the same time, the material can be fully ground, uniformly ground, and screened and separated during the grinding process.

Description of drawings

Fig. 1 is the structural representation of the device of the present utility model;

2 is a schematic diagram of the assembly structure of the primary grinding drum device and the first vibrating screening device of the device of the present invention;

3 is a schematic diagram of the assembly structure of the screening container and the vibrating frame in the first vibrating screening device of the device of the present invention;

4 is a schematic structural diagram of the piston sliding rod mechanism in the first vibrating screening device of the device of the present invention.

In the figure, 1—first-level grinding drum device; 2—secondary grinding drum device; 3—grinding roller mechanism; 4—first vibrating screening device; 5—second vibrating screening device; 6—supporting frame; 7— Piston sliding rod mechanism; 11—first grinding shell; 12—first filter screen; 31—grinding roller; 32—central shaft; 33—motor; 41—screening housing; 42—screening container; 43—vibration 44—electric vibrator; 45—first spring; 46—opening; 47—drawing rope; 48—third strainer; 71—piston sleeve; 72—piston; 73—slide rod; 74—second spring .

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Fig. 1 - Fig. 2, a kind of nanometer material grinding device, comprises support frame 6, and the first-level grinding cylinder device 1 and the secondary grinding cylinder device 2 with the same structure are installed on the support frame 6 from top to bottom; The first-stage grinding cylinder device 1 includes a first grinding shell 11 , a grinding roller mechanism 3 is installed in the first grinding shell 11 , the grinding roller mechanism 3 is connected with a power mechanism, and the first grinding shell 11 is installed. A first filter screen 12 is installed at the bottom of the 11, and a first vibrating screening device 4 is arranged at the lower end of the first-stage grinding cylinder device 1. on the shaft, and is located outside the first grinding shell 11; the discharge port at the lower end of the first vibrating screening device 4 is connected to the feeding port of the secondary grinding cylinder device 2, and the secondary grinding cylinder The lower end of the device 2 is connected with a second vibrating screening device 5 having the same structure as the first vibrating screening device 4 . In the present utility model, after the material is initially ground by the primary grinding cylinder device 1, some materials with a particle size smaller than the aperture of the first filter screen 12 in the primary grinding cylinder device 1 enter the first vibrating screening device 4 at any time. Vibration screening is carried out to separate out a part of the materials with a larger particle size range and carry out production operations. The remaining part of the materials with a smaller particle size range enters the secondary grinding drum device 2 for regrinding, and then passes through the second vibration screening device. 5. Carry out vibrating screening and separation again to obtain materials with a smaller particle size range; in this grinding and screening process, the present utility model avoids excessive grinding of materials, separates materials with different particle sizes, and simultaneously separates the particles. In addition, the device of the utility model operates stably, can continuously feed materials into the first-stage grinding cylinder device 1, handles a large amount of materials, and has the advantages of uniform grinding particle size.

Specifically, both sides of the primary grinding cylinder device 1 and the secondary grinding cylinder device 2 are respectively mounted on the support frame 6 through fixed shafts; the grinding roller mechanism 3 includes three axes parallel to the first grinding shell 11 . and the outer walls of the three grinding rollers 31 are tangent to each other; the grinding rollers 31 are rotatably installed in the first grinding shell 11 through the central axis, and the power mechanism includes a There are three mutually independent motors 33 on the outside of the grinding shell 11 , and the three motors 33 are respectively connected with the three grinding rollers 31 in a driving manner. In the utility model, the material enters into the grinding shell from the feeding port, the motor 33 drives the central shaft to rotate, and the grinding roller 31 is driven to roll, and the material is ground and pulverized under the relative movement and extrusion of the three grinding rollers 31. Under the rolling of the grinding roller 31, it plays a role of stirring and mixing.

In the present invention, the pore size of the filter screen at the bottom of the primary grinding device 1 and the secondary grinding device 2 gradually decreases from top to bottom. Specifically, the first filter screen at the bottom of the first grinding shell 11 The aperture of the mesh 12 and the aperture of the second filter screen in the secondary grinding cylinder device 2 gradually decrease from top to bottom. It should be noted that the structures of the first and primary grinding cylinder device 1 and the secondary grinding cylinder device 2 are the same, and the difference lies in the different apertures of the filter screen. After the particle size is ground by the primary grinding device 1, the material with relatively small particle size is filtered from the first filter screen 12, sieved and separated, and then subjected to vibration screening and separation again; Production should be carried out, and the remaining part of the material with a smaller particle size range enters the secondary grinding cylinder device 2 for regrinding, and then vibrates again through the second vibrating screening device 5 for separation and separation to obtain materials with a smaller particle size range. ; Realize that the particle size of the material gradually decreases during the grinding process and separates in sequence; avoids excessive grinding of the material, and at the same time realizes the full grinding, uniform grinding and sieving separation of the material during the grinding process.

Specifically, as shown in FIG. 2 , the vibrating screening device 4 includes a screening housing 41 that is fixedly installed at the lower end of the secondary grinding drum device 2 , and the screening housing 41 is provided with a vibration mechanism and a screening The container 42 sieves and separates the material again, so that the material is screened more evenly and finely. The third filter screen 48 at the bottom of the screening container 42 can be replaced with a filter screen with a different range of apertures according to production requirements, so that the scope of applicability is wider. The vibrating mechanism includes a vibrating frame 43 matched with the screening container 42, and an electric vibrator 44 is installed on the vibrating frame 43; The side is provided with an opening 46 for removing or facilitating the installation of the screening container 42 ; preferably, a drawstring 47 is installed on the side of the screening container 42 close to the opening 46 . The sieving container 42 has a rectangular cavity structure with an upper opening. The pore size of the filter screen at the bottom of the sieving container 42 is smaller than the filter material hole of the primary grinding device 1 and larger than the filter material hole of the secondary grinding device 2 . It should be noted that the separated materials are vibrated and screened, and a part of the materials with a larger particle size range are separated and collected in the screening container 42, and then the screening container 42 is extracted from the opening 43 on one side of the screening shell 41 to obtain The materials with a larger particle size range are separated for production and transportation.

Preferably, as shown in FIG. 3 , the inner side of the vibrating frame 43 is provided with a clamping slot, and the clamping slot is engaged with the everted upper edge of the screening container 42 , and the bottom end of the screening container 42 is connected to the vibration The bottom of the frame 43 is in contact with each other, which is convenient for the installation and extraction of the screening container 42; the bottom of the vibrating frame 43 is fixed to the port of the screening housing 41 through the piston sliding rod mechanism 7, and the vibrating frame 43 is also installed on the vibrating frame 43 for supporting The first spring 45 of the vibrating frame 43, one end of the first spring 45 is connected to the vibrating frame 43, and the other end is connected to the inner wall of the screening housing 41, so that the vibrating frame 43 is prevented from touching the screen during the vibrating screening process. The inner wall of the housing 41 also makes the vibration frame 43 more stable.

In the present invention, as shown in FIG. 4 , the number of the piston sliding rod mechanisms 7 is 4, and they are respectively located on the inner wall of the screening housing 41 in the circumferential direction. The piston sliding rod mechanism 7 includes a vibration frame 43 A piston sleeve 71 connected to the bottom, a slidable piston 72 is installed in the piston sleeve 71, a sliding rod 73 is installed at the lower end of the piston 72, and the other end of the sliding rod 73 is connected to the screening housing 41 On the edge of the port, the sliding rod 83 is sleeved with a second spring 17; in the present invention, the piston sliding rod mechanism 7 mainly supports and fixes the vibrating frame 43, so that the vibrating frame 43 is more stable during the vibrating screening process. Smooth and reliable.

For those skilled in the art, it is obvious that the above-mentioned specific examples are only the preferred solutions of the present invention. Therefore, the improvements and changes that those skilled in the art may make to some parts of the present invention still reflect the The principle of the present utility model, the realization of the purpose of the present utility model is still within the scope of protection of the present utility model.

Claims (4)

1. The nano material grinding device is characterized by comprising a support frame (6), wherein a primary grinding cylinder device (1) and a secondary grinding cylinder device (2) which are identical in structure are installed on the support frame (6) from top to bottom, the primary grinding cylinder device (1) comprises a first grinding shell (11), a grinding roller mechanism (3) is installed in the first grinding shell (11), the grinding roller mechanism (3) is connected with a power mechanism, a first filter screen (12) is installed at the bottom of the first grinding shell (11), and a first vibration screening device (4) is arranged at the lower end of the primary grinding cylinder device (1); a discharge port at the lower end of the first vibrating screening device (4) is connected with a feed port of the secondary grinding cylinder device (2), and the lower end of the secondary grinding cylinder device (2) is connected with a second vibrating screening device (5) which has the same structure as the first vibrating screening device (4); two sides of the primary grinding cylinder device (1) and two sides of the secondary grinding cylinder device (2) are respectively arranged on the support frame (6) through fixed shafts; the grinding roller mechanism (3) comprises three grinding rollers (31) parallel to the axis of the first grinding shell (11), and the outer walls of the three grinding rollers (31) are tangent in pairs; the grinding rollers (31) are rotatably arranged in the first grinding shell (11) through a central shaft (32), the power mechanism comprises three mutually independent motors (33) arranged on the outer side of the first grinding shell (11), and the three motors (33) are respectively in transmission connection with the three grinding rollers (31); the vibrating screening device (4) comprises a screening shell (41) fixedly mounted at the lower end of the secondary grinding cylinder device (2), a vibrating mechanism and a screening container (42) are mounted in the screening shell (41), the vibrating mechanism comprises a vibrating frame (43) matched with the screening container (42), and an electric vibrator (44) is mounted on the vibrating frame (43); an opening (46) for installing or extracting a screening container (42) is formed in one side of the screening shell (41); a clamping groove is formed in the inner side of the vibration frame (43), the clamping groove is clamped with the upper edge of the screening container (42), and the bottom end of the screening container (42) is in contact with the bottom of the vibration frame (43); the bottom of the vibration frame (43) is fixed on the inner wall of the screening shell (41) through a piston slide rod mechanism (7), a first spring (45) used for supporting the vibration frame (43) is further installed on the vibration frame (43), one end of the first spring (45) is connected with the vibration frame (43), and the other end of the first spring is connected with the inner wall of the screening shell (41);

after the material is through one-level grinding cylinder device (1) primary grinding, the partial particle size is less than the material in first filter screen (12) aperture in one-level grinding cylinder device (1), enter into vibration screening in first vibration screening device (4) at any time, the great material of a part particle size scope is separated out, produce and should transport, the less material of a part particle size scope remains and enters into second grade grinding cylinder device (2) and grinds once more, then carry out vibration screening once more through second vibration screening device (5), the separation, obtain the material of more granule size scope.

2. The nanomaterial milling apparatus according to claim 1, wherein the first sieve (12) at the bottom of the first milling housing (11) and the second sieve in the secondary milling drum means (2) have a pore size that gradually decreases from top to bottom.

3. The nanomaterial grinder assembly according to claim 1, characterized in that the sieving container (42) has a rectangular recessed cavity structure with an upper opening, and the aperture of the third sieve (48) at the bottom end of the sieving container (42) is smaller than the aperture of the first sieve (12) of the primary grinder assembly (1) and larger than the aperture of the second sieve of the secondary grinder assembly (2).

4. The nano-material grinding device according to claim 1, wherein the piston slide rod mechanism (7) comprises a piston sleeve (71) connected with the bottom of the vibration frame (43), a slidable piston (72) is installed in the piston sleeve (71) in a matching manner, a slide rod (73) is installed at the lower end of the piston (72), the other end of the slide rod (73) is connected to the edge of the port of the screening housing (41), and a second spring (74) is sleeved on the slide rod (73).

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