Crushing device
By adopting a cone-shaped drum and staggered shearing pieces in the crushing device, the problem of uneven powder particle size is solved, the granular material is evenly cut, the generation of large particles is avoided, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202421658394.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing crushing device is difficult to ensure the uniformity of powder particle size in the fertilizer high tower melt granulation production, resulting in excessive coarse particles, clogging the nozzle holes and affecting product quality.
It adopts a two-drum design, the outer wall of the drum is conical in structure along the axial direction, the first raised shearing pieces are staggered, and the driving device rotates the drum to ensure that the raised shearing pieces at different levels have different linear speeds, thereby achieving uniform cutting of granular materials.
It effectively avoids the constant speed extrusion of granular materials, improves the uniformity of powder particle size, reduces the generation of large granular materials, prevents blockage, and improves production efficiency.
Smart Images
Figure CN223475159U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crusher technology, and in particular to a crushing device. Background Technology
[0002] In the high-tower melt granulation process for fertilizer production, it is necessary to control the fineness of the raw materials. Particles with a diameter <0.246mm (passing through a 60-mesh standard sieve) must account for more than 85% (ideally more than 90%), and coarse particles with a diameter ≥1mm must be less than 1% (ideally less than 0.5%). Coarse raw materials prevent homogenization of the slurry and quickly clog the nozzle orifices, leading to broken product particles and powder contamination.
[0003] The standard operation involves crushing the raw materials using a high-efficiency compound fine crusher, then screening out the coarse particles; the coarse particles are then crushed again using a chain crusher to ensure the fineness of the raw materials.
[0004] Common crushing devices often have a cylindrical internal structure, which can easily lead to uneven particle size and an excessive number of large particles. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a crushing device that crushes particles of different sizes, thereby reducing the phenomenon of large particles.
[0006] The objective of this utility model is achieved through the following technical solution:
[0007] A crushing device, comprising:
[0008] At least two rollers, the outer walls of which are tapered along the axial direction of the rollers, the two rollers having the same axial direction, the large end of one roller and the small end of the other roller being spaced apart in the horizontal direction; the outer walls of the rollers have first protruding shear members that protrude radially, and multiple first protruding shear members are provided, the multiple first protruding shear members being spaced apart along the axial direction of the rollers; the multiple first protruding shear members are respectively connected to one of two adjacent rollers, and the multiple first protruding shear members connected to different rollers are staggered along the axial direction of the rollers;
[0009] A drive unit is connected to the roller and is capable of driving the roller to rotate about its own axis.
[0010] Furthermore, the plurality of first protruding shear members are respectively connected to one of two adjacent rollers, and the projections of the plurality of first protruding shear members connected to different rollers on the axial direction of the rollers have overlapping portions.
[0011] Furthermore, the first protruding shearing member includes multiple shearing rods, which are distributed circumferentially around the roller.
[0012] Furthermore, the end of the shearing rod away from the outer wall of the drum is V-shaped or W-shaped.
[0013] Furthermore, the drive device is provided in at least two, and the drive device includes a motor and a rotating shaft connected to the motor drive, with each rotating shaft being connected to one of the rollers drive.
[0014] Furthermore, the crushing device also includes a housing, and the roller is disposed within the housing.
[0015] Furthermore, the housing is provided with multiple pairs of bearings, and the rotating shaft passes through at least one pair of the bearings.
[0016] Furthermore, the housing is also connected to a second protruding shear member, and multiple second protruding shear members are provided. The multiple second protruding shear members are arranged at intervals along the axial direction of the roller, and the multiple second protruding shear members and multiple first protruding shear members of one of the rollers are distributed alternately along the axial direction of the roller; and the projections of the first protruding shear members and the second protruding shear members on the axial direction of the roller have an overlapping portion.
[0017] Furthermore, at least two second protruding shear members are provided, and the two second protruding shear members respectively cooperate with one of the first protruding shear members.
[0018] Furthermore, the roller has a hollow structure.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] Based on the conical structure of the outer wall of the roller along the roller axis, the two rollers have the same axis, and the large end of one roller and the small end of the other roller are set at intervals in the horizontal direction, so that the cutting line speed of the first protruding shearing element of each of the two rollers at the same horizontal height is different. Therefore, it can avoid the uniform compression of granular materials and prevent the granular materials from being compressed at the same speed and not being uniformly cut in humid weather or humid conditions. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of a crushing device according to the present invention.
[0022] In the figure: 1. Roller; 11. Outer wall; 12. Large end; 13. Small end; 2. First protruding shearing component; 21. Shearing rod; 3. Drive device; 31. Motor; 32. Shaft; 4. Housing; 5. Bearing pair; 6. Second protruding shearing component. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0024] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] See Figure 1 The crushing device of this embodiment includes at least two rollers 1 and a drive device 3.
[0027] The outer wall 11 of the roller 1 has a conical structure along the axial direction of the roller 1. The two rollers 1 have the same axial direction (for example, their axes are parallel to each other). The large end 12 of one roller 1 and the small end 13 of the other roller 1 are arranged at intervals in the horizontal direction. The outer wall 11 of the roller 1 has a first protruding shear member 2 formed by protruding in its own radial direction. There are multiple first protruding shear members 2, and the multiple first protruding shear members 2 are arranged at intervals along the axial direction of the roller 1. The multiple first protruding shear members 2 are respectively connected to one of two adjacent rollers 1, and the multiple first protruding shear members 2 connected to different rollers 1 are distributed alternately along the axial direction of the roller 1.
[0028] The drive unit 3 is connected to the roller 1 and can drive the roller 1 to rotate around its own axis.
[0029] During operation, the two rollers 1 are placed inverted relative to each other, with the small end 13 of one roller corresponding to the large end 12 of the other. Thus, when the angular velocities of the two rollers 1 are the same, the linear velocity of the first protruding shear member 2 connected to the large end 12 is greater than the linear velocity of the first protruding shear member 2 connected to the small end 13. This results in a difference in the cutting linear velocities between the two first protruding shear members 2 that engage in cutting within the two rollers 1. Consequently, when the granular material passes through the gap between the outer walls 11 of the two rollers 1 from top to bottom under its own gravity, it is cut by the two first protruding shear members 2 (which are connected to different rollers 1) with a velocity difference, rather than by the uniform compression of a traditional cylinder. This ensures that the granular material is cut uniformly, preventing the formation of excessively large granules.
[0030] Obviously, the outer wall 11 of the roller 1 has a conical structure (either a pyramid or a cone) along the axial direction of the roller 1. The two rollers 1 have the same axial direction. The large end 12 of one roller 1 and the small end 13 of the other roller 1 are set at intervals in the horizontal direction, so that the cutting line speed of the first protruding shearing member 2 at the same horizontal height of the two rollers 1 is different. Therefore, it can avoid the uniform compression of the granular material and prevent the granular material from being uniformly compressed and cut in humid weather or humid conditions.
[0031] In this embodiment, specifically, multiple first protruding shearing elements 2 are respectively connected to one of two adjacent rollers 1, and the projections of the multiple first protruding shearing elements 2 connected to different rollers 1 on the axial direction of roller 1 overlap. The advantage of this arrangement is that when the granular material is pulled by its own gravity and passes through the gap between the outer walls 11 of the two rollers 1 from top to bottom, it cannot fall vertically, but needs to slide down along the outer walls 11 of roller 1. On the way, it is cut by the first protruding shearing element 2 of one roller 1 and thrown to the outer wall 11 of the other roller 1 on the opposite side, so that the downward movement trajectory of the granular material is wavy, thereby further improving the uniform cutting effect of the granular material.
[0032] In this embodiment, preferably, the first protruding shear member 2 includes multiple shearing rods 21, which are distributed circumferentially around the roller 1 at intervals. This arrangement not only reduces the manufacturing cost of the first protruding shear member 2 but also makes it lighter. It is understood that, as an alternative arrangement, the first protruding shear member 2 can be a circular disc, but this is not conducive to the downward movement of materials, resulting in a decrease in working efficiency.
[0033] In this embodiment, in order to improve the sharpness of the shearing bar 21, preferably, the end of the shearing bar 21 away from the outer side wall 11 of the roller 1 is V-shaped or W-shaped.
[0034] In this embodiment, preferably, at least two drive devices 3 are provided. Each drive device 3 includes a motor 31 and a rotating shaft 32 driven by the motor 31. Each rotating shaft 32 is driven by one of the rollers 1. With this configuration, the speed difference of the required cutting line speed can be controlled by adjusting the speed difference between the two motors 31. It is understood that, as an alternative configuration, the same drive device 3 can simultaneously drive the two rotating shafts 32 to rotate synchronously.
[0035] In this embodiment, to avoid material spillage, preferably, a crushing device further includes a housing 4, with the roller 1 disposed inside the housing 4.
[0036] In this embodiment, in order to make the rotating shaft 32 operate more smoothly, preferably, the housing 4 is provided with multiple pairs of bearings 5, and the rotating shaft 32 passes through at least one pair of bearings 5.
[0037] In this embodiment, preferably, the housing 4 is further connected to a second protruding shear member 6. Multiple second protruding shear members 6 are provided, spaced apart along the axial direction of the roller 1. These multiple second protruding shear members 6 are staggered with multiple first protruding shear members 2 of one of the rollers 1 along the axial direction of the roller 1; and the projections of the first protruding shear members 2 and the second protruding shear members 6 onto the axial direction of the roller 1 overlap. This arrangement increases the cutting channel, thereby further improving the cutting efficiency.
[0038] In this embodiment, in order to further improve the cutting efficiency, preferably, at least two second protruding shearing members 6 are provided, and the two second protruding shearing members 6 respectively cooperate with one of the first protruding shearing members 2.
[0039] In this embodiment, in order to reduce the load on roller 1, roller 1 is preferably a hollow structure.
[0040] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.
Claims
1. A crushing device, characterized in that, include: At least two rollers (1), the outer sidewall (11) of the rollers (1) is conical in shape along the axial direction of the rollers (1), the two rollers (1) are axially the same, the large end (12) of one roller (1) and the small end (13) of the other roller (1) are spaced apart in the horizontal direction; the outer sidewall (11) of the rollers (1) has a first protruding shear member (2) formed by protruding in its own radial direction, a plurality of the first protruding shear members (2) are provided, the plurality of the first protruding shear members (2) are spaced apart along the axial direction of the rollers (1); the plurality of the first protruding shear members (2) are respectively connected to one of two adjacent rollers (1), and the plurality of the first protruding shear members (2) connected to different rollers (1) are staggered along the axial direction of the rollers (1); The drive device (3) is connected to the roller (1) and can drive the roller (1) to rotate about its own axis.
2. The crushing device as described in claim 1, characterized in that, Multiple first protruding shearing elements (2) are respectively connected to one of two adjacent rollers (1), and the projections of multiple first protruding shearing elements (2) connected to different rollers (1) on the axial direction of the rollers (1) have overlapping portions.
3. The crushing device as described in claim 1, characterized in that, The first protruding shearing member (2) includes multiple shearing rods (21) which are distributed circumferentially around the roller (1).
4. The crushing device as described in claim 3, characterized in that, The end of the shearing rod (21) away from the outer side wall (11) of the roller (1) is V-shaped or W-shaped.
5. The crushing device as described in claim 1, characterized in that, The drive device (3) is provided in at least two. The drive device (3) includes a motor (31) and a rotating shaft (32) driven by the motor (31). Each rotating shaft (32) is driven by one of the rollers (1).
6. The crushing device as described in claim 5, characterized in that, The crushing device further includes a housing (4), and the roller (1) is disposed inside the housing (4).
7. A crushing device as described in claim 6, characterized in that, The housing (4) is provided with multiple pairs of bearings (5), and the rotating shaft (32) passes through at least one pair of the bearings (5).
8. A crushing device as described in claim 6, characterized in that, The housing (4) is also connected to a second protruding shear member (6). There are multiple second protruding shear members (6). The multiple second protruding shear members (6) are arranged at intervals along the axial direction of the roller (1). The multiple second protruding shear members (6) and a plurality of first protruding shear members (2) of one of the rollers (1) are distributed alternately along the axial direction of the roller (1). The projections of the first protruding shear members (2) and the second protruding shear members (6) on the axial direction of the roller (1) have overlapping portions.
9. A crushing device as described in claim 8, characterized in that, The second protruding shear member (6) is provided in at least two, and the two second protruding shear members (6) respectively cooperate with one of the first protruding shear members (2).
10. A crushing device as described in claim 1, characterized in that, The roller (1) has a hollow structure.