A porous carbon-carbon molecular sieve ultra-micro grinding device and grinding machine
By designing a porous carbon-carbon molecular sieve ultramicro-grade tooth grinding device, the ultramicro-grade crushing of carbon raw materials is achieved using rotary grinding discs and grinding teeth, solving the problem that existing ball mills are difficult to achieve ultramicro-grade particle size, high energy consumption and high noise, and achieving high efficiency, low energy consumption and low noise crushing effect.
Patent Information
- Application Number
- CN202420567612.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Existing ball mills are difficult to achieve ultramicro or nanoscale particle size when crushing carbon raw materials, and have high energy consumption and high noise, which affects the crushing efficiency and environment.
A porous carbon carbon molecular sieve ultramicro-grade tooth grinding device is designed, and the rotating mill disc and grinding teeth fixed on the inner wall of the abrasive box are used to crush through impact and rebound of the grinding head, avoiding friction media such as balls in the ball mill and reducing energy consumption and noise.
It realizes efficient ultra-micro-level crushing of carbon raw materials, with a particle size of up to 0.01um~3um, reducing energy consumption and noise, and improving crushing efficiency and environmental comfort.
Smart Images
Figure CN222724472U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of ultra-micro or nano-scale pulverization technology, in particular to an ultra-micro-scale tooth grinding device and a tooth grinding machine for porous carbon-carbon molecular sieves. Background Art
[0002] Porous carbon molecular sieve is a new type of adsorbent and an excellent non-polar carbon material. Among them, nitrogen-making carbon molecular sieve is used to separate air-enriched nitrogen. It adopts room temperature and low pressure nitrogen production process, which has the advantages of less investment cost, faster nitrogen production speed and lower nitrogen cost than the traditional deep cold and high pressure nitrogen production process.
[0003] When preparing porous carbon molecular sieves, it is necessary to crush the carbon raw materials with relatively large particle sizes into micron-level, ultramicro-level or even nano-level powders. The finer the particle size of the powder, the better the quality of the prepared porous carbon molecular sieve.
[0004] The existing technology uses ball mills to grind carbon raw materials, but there are problems such as failure to crush normally, uneven particle sizes of the powder after crushing, and failure to reach the preset crushing particle size. According to research, the optimal crushing particle size for grinding carbon raw materials with a ball mill is about 2um, that is, the optimal powder particle size can achieve micron level, but cannot achieve ultramicro or nano level.
[0005] Moreover, when using a ball mill to grind micron-sized powders, it is usually necessary to increase the power of the ball mill, which not only increases the electricity cost, but also the noise level generated during the crushing process is as high as 120 decibels, resulting in a noisy crushing environment and adverse effects on the operator's health. Utility Model Content
[0006] The present invention provides a porous carbon-carbon molecular sieve ultra-micro gear grinding device and a gear grinding machine, which can solve the problems of large crushing particle size, failure to reach ultra-micro level, high energy consumption and high noise in the grinding process of the ball mill provided by the prior art.
[0007] In the first aspect, the present invention provides a porous carbon-carbon molecular sieve ultra-fine grinding device, comprising an abrasive box, an abrasive gear ring, a grinding disc assembly, and a box door; a feed inlet and an air inlet are provided on the box wall of the abrasive box; the abrasive gear ring is coaxially and tightly connected to the inner wall of the abrasive box; the grinding disc assembly comprises a motor, a bearing seat, a connecting shaft, a grinding disc and a grinding head, wherein the motor and the bearing seat are arranged outside the abrasive box, the power shaft of the motor is dynamically connected to the connecting shaft, one end of the connecting shaft is supported by the bearing seat, and the other end passes through the box wall of the abrasive box and is connected to the grinding disc, the central axis of the bearing seat, the connecting shaft and the grinding disc is colinear with the central axis of the abrasive box; there are multiple grinding heads, which are distributed at intervals along the circumference of the grinding disc on the edge of the grinding disc; the box door can be opened and closed at the open end of the abrasive box, and a discharge port is provided on the box door.
[0008] As a possible implementation, the abrasive box is a cylindrical structure with an open end; the feed inlet and the air inlet are provided at the bottom of the cylindrical structure, and the box door is openably provided at the open end of the cylindrical structure.
[0009] As a possible implementation method, the diameter D of the cylindrical structure is determined according to the powder output, 1400 mm ≤ D ≤ 2000 mm.
[0010] As a possible implementation, when the grinding disc is driven by a motor to rotate at a preset speed, the linear speed of the grinding head is 10000 to 14000 mm / min.
[0011] As a possible implementation manner, there is a distance L1 between the top of the grinding head and the tooth top of the grinding tooth, and 1cm≤L1≤1.5cm.
[0012] As a possible implementation, the grinding heads are evenly distributed on the outer edge of the grinding disc; the grinding disc has a first surface and a second surface opposite to each other, and adjacent grinding heads are respectively connected to the first surface and the second surface, that is, adjacent grinding heads are staggeredly distributed.
[0013] As a possible implementation, the abrasive gear ring is an integral structure or a segmented structure.
[0014] As a possible implementation manner, the abrasive gear ring includes N arc segments, and the N arc segments are connected end to end to form the abrasive gear ring.
[0015] As a possible implementation, the abrasive gear ring is a high-manganese alloy steel abrasive gear ring; the grinding head is a YG8 or high-hardness alloy grinding head.
[0016] In a second aspect, the utility model further provides a grinding mill, wherein the grinding mill is an ultra-fine grinding device using the porous carbon-carbon molecular sieve described in the first aspect.
[0017] Compared with the prior art, the beneficial effects produced by the present invention include: after the granular raw material enters the abrasive box, the grinding head hits the material particles, hits the gear ring, and is crushed and rebounded. After rebounding to the grinding head that rotates to the impact position at the next moment, it continues to be hit by the grinding head. After repeated cycles, the particles are crushed into powder. When the particle size of the powder reaches the screening standard, it will be sucked into the storage box by negative pressure wind. Compared with the ball mill, there is no need to set friction or impact media such as balls in the abrasive box. The granular raw material can be ground by using a rotating grinding disc and grinding teeth fixed on the inner wall of the abrasive box, which has the advantages of low energy consumption and low noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0019] Figure 1 The assembly front view of the grinding teeth, grinding disc and grinding head provided in the embodiment of the utility model;
[0020] Figure 2 A side view of the assembly of the grinding teeth, grinding disc and grinding head provided in the embodiment of the utility model;
[0021] Figure 3 for Figure 2 A local enlarged schematic diagram of point A is shown.
[0022] Figure numerals: 21 - abrasive gear ring, 22 - grinding disc, 23 - grinding head. DETAILED DESCRIPTION
[0023] In order to facilitate the clear description of the technical solution of the embodiment of the present invention, in the embodiment of the present invention, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and do not limit their order. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit them to be different.
[0024] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific way.
[0025] In the present invention, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The following at least one item (items) or similar expressions thereof refer to any combination of these items, including any combination of single items (items) or plural items (items). For example, at least one item (items) of a, b or c can mean: a, b, c, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b and c, where a, b, c can be single or multiple.
[0026] See also Figures 1 to 3 In the first aspect, the present invention provides a porous carbon-carbon molecular sieve ultra-fine grinding device, comprising an abrasive box, an abrasive gear ring 21, a grinding disc 22, and a box door; a feed port and an air inlet are provided on the box wall of the abrasive box; the abrasive gear ring 21 is coaxially and tightly connected to the inner wall of the abrasive box; the grinding disc 22 assembly comprises a motor, a bearing seat, a connecting shaft, a grinding disc 22 and a grinding head 23, wherein the motor and the bearing seat are arranged outside the abrasive box, the power shaft of the motor is dynamically connected to the connecting shaft, one end of the connecting shaft is supported by the bearing seat, and the other end passes through the box wall of the abrasive box and is connected to the grinding disc 22, the central axis of the bearing seat, the connecting shaft and the grinding disc 22 is colinear with the central axis of the abrasive box; there are multiple grinding heads 23, which are distributed at intervals along the circumference of the grinding disc 22 at the edge of the grinding disc 22; the box door can be opened and closed at the open end of the abrasive box, and a discharge port is provided on the box door.
[0027] The mill provided by the embodiment of the utility model can be used for impact milling of polymer phenolic foam, phenolic resin or carbon material, and can output ultra-micro or nano powder under preset processing parameters, and the above powder can be used for the preparation of porous carbon-carbon molecular sieve. It has been verified by experiments that the mill provided by the utility model can obtain powder of 0.01um to 3um.
[0028] As a possible implementation, the abrasive box is a cylindrical structure with an open end; the feed inlet and the air inlet are provided at the bottom of the cylindrical structure, and the box door is openably provided at the open end of the cylindrical structure.
[0029] As a possible implementation method, the diameter D of the cylindrical structure is determined according to the powder output, 1400 mm ≤ D ≤ 2000 mm.
[0030] As a possible implementation, when the grinding disc is driven by the motor to rotate at a preset speed, the linear speed of the grinding head is 10000-14000 mm / min. It needs to be further explained that the working efficiency of the grinding mill and the preset particle size of the powder are proportional to the preset speed, that is, the greater the preset speed, the higher the working efficiency and the smaller the preset particle size that can be obtained.
[0031] As a possible implementation, when the grinding disc 22 is driven by the motor to rotate at a preset speed, the linear speed of the grinding head 23 is 10000-14000 mm / min. For example, the linear speed of the grinding head 23 is 10000 mm / min, 11000 mm / min, 12000 mm / min, 13000 mm / min or 14000 mm / min.
[0032] As a possible implementation, there is a spacing L1 between the top of the grinding head 23 and the tooth top of the grinding tooth, 1cm≤L1≤1.5cm. For example, L1=1cm, L1=1.1cm, L1=1.2cm, L1=1.3cm, L1=1.4cm or L1=1.5cm.
[0033] As a possible implementation, the grinding heads 23 are evenly distributed on the outer edge of the grinding disc 22; the grinding disc 22 has a first surface and a second surface opposite to each other, and adjacent grinding heads 23 are respectively connected to the first surface and the second surface, that is, adjacent grinding heads 23 are staggered.
[0034] As a possible implementation, the abrasive gear ring 21 is an integral structure or a segmented structure.
[0035] As a possible implementation manner, the abrasive gear ring 21 includes N arc segments, and the N arc segments are connected end to end to form the abrasive gear ring 21.
[0036] As a specific implementation, the abrasive box 20 may be a cylindrical structure with an opening at one end, and the diameter of the opening is equal to the diameter of the cylinder. A circle of grinding teeth 21 is coaxially arranged on the inner wall of the abrasive box 20. For ease of installation, the grinding gear ring 21 may adopt a segmented structure, and the multiple segments of the grinding gear ring 21 are fastened to the inner wall of the abrasive box 20 by any existing fixing method. Such a setting is not only easy to disassemble, but also has the effect of low maintenance cost, that is, when a certain segment of the abrasive gear ring 21 is damaged, it can be repaired or replaced separately.
[0037] As a possible implementation, the abrasive gear ring 21 is a high-manganese alloy steel abrasive gear ring; the grinding head 23 is a YG8 or high-hardness alloy grinding head.
[0038] In practical applications, the abrasive gear ring 21 will be continuously impacted, so it is necessary to select a material with certain strength, wear resistance and toughness to manufacture the grinding teeth 21, such as high-manganese alloy steel.
[0039] The diameter of the abrasive box needs to match the production capacity, that is, when the production capacity needs to be increased, the diameter of the abrasive box can be increased. At this time, the diameter of the grinding disc 22 needs to be increased accordingly, and the number of grinding heads 23 distributed on the grinding disc 22 needs to be increased. As an example, the diameter of the grinding disc 22 is 1400 mm.
[0040] An appropriate working space needs to be set between the grinding disc 22 and the abrasive gear ring 21, that is, it should not be too large or too small. When the working space is too large, the impact path of the granular raw material or the powder formed by repeated impact is too long, and it takes longer time to obtain powder with a preset particle size, or it is difficult to obtain powder with a preset particle size.
[0041] In the working space, the grinding heads 23 are carried by the grinding disc 22, and the specific number of the grinding heads 23 can be reasonably determined according to the diameter of the grinding disc 22. That is, the number of the grinding heads 23 can increase as the diameter of the grinding disc 22 increases, and correspondingly, decrease as the diameter of the grinding disc 22 decreases.
[0042] As a possible implementation, the grinding heads 23 are evenly distributed on the outer edge of the grinding disc 22. The grinding disc 22 has a first surface and a second surface opposite to each other, and adjacent grinding heads 23 are respectively connected to the first surface and the second surface, that is, adjacent grinding heads 23 are staggered. In this way, the staggered distribution of the grinding heads 23 can ensure the uniformity of powder grinding.
[0043] In a second aspect, the utility model further provides a grinding mill, wherein the grinding mill is an ultra-fine grinding device using the porous carbon-carbon molecular sieve described in the first aspect.
[0044] Compared with the prior art, the beneficial effects produced by the present invention include: after the granular raw material enters the abrasive box, the grinding head hits the material particles, hits the gear ring, and is crushed and rebounded. After rebounding to the grinding head that rotates to the impact position at the next moment, it continues to be hit by the grinding head. After repeated cycles, the particles are crushed into powder. When the particle size of the powder reaches the screening standard, it will be sucked into the storage box by negative pressure wind. Compared with the ball mill, there is no need to set friction or impact media such as balls in the abrasive box. The granular raw material can be ground by using a rotating grinding disc and grinding teeth fixed on the inner wall of the abrasive box, which has the advantages of low energy consumption and low noise.
Claims
1. A porous carbon-carbon molecular sieve ultra-micro grinding device, characterized in that: Including abrasive box, abrasive gear ring, grinding disc assembly, box door; A feed inlet and an air inlet are provided on the wall of the abrasive box; the abrasive gear ring is coaxially and tightly connected to the inner wall of the abrasive box; the grinding disc assembly comprises a motor, a bearing seat, a connecting shaft, a grinding disc and a grinding head, wherein the motor and the bearing seat are arranged outside the abrasive box, the power shaft of the motor is dynamically connected to the connecting shaft, one end of the connecting shaft is supported by the bearing seat, and the other end passes through the wall of the abrasive box and is connected to the grinding disc, and the central axes of the bearing seat, the connecting shaft and the grinding disc are colinear with the central axis of the abrasive box; there are multiple grinding heads, which are distributed at intervals along the circumference of the grinding disc on the edge of the grinding disc; the box door can be opened and closed at the open end of the abrasive box, and the box door has a discharge port.
2. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: The abrasive box is a cylindrical structure with one end open; the feed inlet and the air inlet are provided at the bottom of the cylindrical structure, and the box door is openably arranged at the open end of the cylindrical structure.
3. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 2, characterized in that: The diameter D of the cylindrical structure is determined according to the powder output, 1400 mm ≤ D ≤ 2000 mm.
4. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: When the grinding disc is driven by the motor to rotate at a preset speed, the linear speed of the grinding head is 10000-14000 mm / min.
5. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: There is a distance L1 between the top of the grinding head and the tooth tops of the grinding teeth included in the abrasive gear ring, and 1cm≤L1≤1.5cm.
6. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: The grinding heads are evenly distributed on the outer edge of the grinding disc; the grinding disc has a first surface and a second surface opposite to each other, and adjacent grinding heads are respectively connected to the first surface and the second surface, that is, adjacent grinding heads are staggeredly distributed.
7. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: The abrasive gear ring is an integral structure or a segmented structure.
8. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: The abrasive gear ring includes N arc segments, and the N arc segments are connected end to end to form the abrasive gear ring.
9. The porous carbon-carbon molecular sieve ultra-micro grinding device according to claim 1, characterized in that: The abrasive gear ring is a high-manganese alloy steel abrasive gear ring; the grinding head is a YG8 or high-hardness alloy grinding head.
10. A grinding machine, characterized in that: The grinding mill is an ultra-fine grinding device using the porous carbon-carbon molecular sieve described in any one of claims 1 to 9.