Raymond mill center shaft grinding roller device

Abstract

The utility model discloses a center axis grinding roller device of a Raymond mill, including a base, a bearing frame assembly is arranged on the base, a center axis is pivotally connected in the bearing frame assembly, a plum blossom frame is arranged on the upper end of the center axis, and a grinding roller device is arranged on the plum blossom frame located outside the center axis; a scraper assembly is arranged above the base, the plum blossom frame and the scraper assembly are fixedly connected through a support member, the support member is spaced apart from the center axis, and the support member rotates synchronously with the center axis through the plum blossom frame; a grinding ring corresponding to the scraper assembly is arranged on the base; a pad for lifting the center axis upward is arranged between the base and the bearing frame assembly; a cover cylinder for covering the grinding roller device is arranged on the base. By raising the center axis, the scraper can shovel more materials, increase the contact area between the grinding roller and the grinding ring on the grinding roller device, improve the output, and also improve the fineness and water dispersion of the material.

Description

Technical Field

[0001] The utility model belongs to the field of Raymond mill equipment and relates to a central axis grinding roller device of a Raymond mill. Background Art

[0002] Raymond mill is a kind of grinding equipment, which is mainly used for grinding materials in the fields of ore, chemical industry, building materials, etc.

[0003] Working principle of Raymond mill: After the material to be crushed enters the main machine, the grinding roller device suspended on the main machine revolves around the vertical central axis and rotates itself at the same time. Due to the centrifugal force during rotation, the grinding roller swings outward and presses against the grinding ring, and the scraper scoops up the material and sends it to the middle of the grinding roller and the grinding ring. The purpose of crushing the material is achieved due to the rolling and rolling of the grinding roller. The airflow of the blower blows the fine powder to the classifier above the main machine for screening, and the coarse particles fall back to the main machine for re-grinding.

[0004] At present, when the grinding roller and grinding ring of the Raymond mill are pinned at the end, the scraper scoops up less material, resulting in a small output when a certain fineness needs to be achieved during the production process.

[0005] Schematic table of material performance results before existing technology transformation:

[0006] Serial number Fineness (mesh) Water dispersibility 1 0.045 82 2 0.042 80.1 3 0.046 81 4 0.037 81.2 5 0.049 81.4 6 0.041 80.6 7 0.045 80.9 8 0.044 80.7 9 0.048 81.2 10 0.039 81.7 average value 0.0436 81.08 Utility Model Content

[0007] In order to solve the problems in the background technology, the purpose of the utility model is to provide a Raymond mill center axis grinding roller device to improve the output.

[0008] The purpose of the utility model is achieved through the following technical solutions:

[0009] A center shaft grinding roller device of a Raymond mill comprises a base, a bearing frame assembly is arranged on the base, a center shaft is pivotally connected to the bearing frame assembly, a plum blossom frame is arranged on the upper end of the center shaft, and a grinding roller device is arranged on the plum blossom frame located on the outer side of the center shaft; a scraper assembly is arranged above the base, the plum blossom frame and the scraper assembly are fixedly connected by a support member, the support member is spaced apart from the center shaft, and the support member rotates synchronously with the center shaft through the plum blossom frame; a grinding ring corresponding to the scraper assembly is arranged on the base; a pad for lifting the center shaft upward is arranged between the base and the bearing frame assembly; a cover cylinder for covering the grinding roller device is arranged on the base.

[0010] As a further improvement of an embodiment of the utility model, the pad lifts the central axis upward by 2 cm.

[0011] As a further improvement of an embodiment of the utility model, a shaft sleeve is provided on the base, the central shaft is provided in the shaft sleeve, and the upper end of the central shaft is exposed outside the shaft sleeve and connected to the plum blossom frame.

[0012] As a further improvement of an embodiment of the utility model, a gap is left between the upper end of the shaft sleeve and the support member, and a bearing A is arranged in the gap.

[0013] As a further improvement of an embodiment of the utility model, a return air box is arranged on the outside of the base, an air duct connected to the return air box is arranged inside the base, and an air duct guard plate is arranged inside the air duct.

[0014] As a further improvement of an embodiment of the utility model, the blade assembly includes a blade frame fixedly connected to the support member, a blade frame lower seat is arranged at the front end of the blade frame, and a blade is arranged on the blade frame lower seat.

[0015] As a further improvement of an embodiment of the utility model, a lining plate is provided at the connection between the base and the bearing frame assembly, and the lining plate is provided on the upper end surface of the base and the bearing frame assembly.

[0016] As a further improvement of one embodiment of the utility model, the bearing frame assembly includes a bearing frame, a bearing cavity is arranged in the bearing frame, a bearing B is arranged in the bearing cavity, and the center axis is arranged in the bearing B; the bearing frame has an outwardly extending expansion arm, and the expansion arm is overlapped on the base.

[0017] As a further improvement of an embodiment of the utility model, the base is provided with a first step for placing the expansion arm and a second step for placing the lining plate, the first step is provided with the padding plate, and the expansion arm is placed on the padding plate; the expansion arm and the base are locked by bolts.

[0018] As a further improvement of an embodiment of the utility model, a first groove is provided at the upper end of the extension arm, the bottom surface of the first groove is a horizontal plane, the bottom surface of the second step is a horizontal plane and is flush with the bottom surface of the first groove, and the lining plate is provided on the first groove and the second step and is tightly fitted with the edges of the first groove and the second step.

[0019] The above technical solution has the following beneficial effects: by raising the central axis, the scraper can scoop up more materials, thereby increasing the contact area between the grinding roller and the grinding ring on the grinding roller device, improving the output, and also improving the fineness, water dispersion and other properties of the produced materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 This is a structural schematic diagram provided by the utility model.

[0023] In the figure: 1-base; 2-bearing frame; 3-cover cylinder; 4-center axis; 5-plum blossom frame; 6-grinding roller device; 7-shaft sleeve; 8-grinding ring; 9-lining plate; 10-pad; 11-shovel frame; 12-shovel frame lower seat; 13-shovel; 14-air duct guard plate; 15-bearing B; 16-return air box; 17-bearing A; 18-support member. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention. Example

[0027] See also Figure 1As shown, a Raymond mill center axis grinding roller device includes a base 1, a bearing frame assembly is arranged on the base 1, a center axis 4 is pivotally connected to the bearing frame assembly, a plum blossom frame 5 is arranged on the upper end of the center axis 4, a grinding roller device 6 is arranged on the plum blossom frame 5 located outside the center axis 4, and a grinding roller is arranged on the grinding roller device. A scraper assembly is arranged above the base 1, and the plum blossom frame 5 and the scraper assembly are fixedly connected by a support member 18. The support member 18 is spaced apart from the center axis 4, and the two are not in direct contact during movement. A grinding ring 8 corresponding to the scraper assembly is arranged on the base 1. The above-mentioned grinding roller device 6 is a prior art, which has a grinding roller thereon and can be directly purchased from the market.

[0028] The support member 18 rotates synchronously with the central shaft 4 through the quincunx frame 5. When the central shaft 4 is driven by the driving motor, the grinding roller device and the scraper assembly rotate synchronously, thereby achieving the purpose of crushing the material.

[0029] Preferably, the base 1 is provided with a shaft sleeve 7, the central shaft 4 is arranged in the shaft sleeve 7, the upper end of the central shaft 4 is exposed outside the shaft sleeve 7 and connected to the plum blossom frame 5. The shaft sleeve 7 limits the position of the central shaft 4, thereby preventing the central shaft 4 from shaking during the rotation process and improving the stability of the operation of the central shaft 4.

[0030] In this embodiment, the bearing frame assembly includes a bearing frame 2, a bearing cavity is provided in the bearing frame 2, a bearing B15 is provided in the bearing cavity, two bearings B15 are provided, and the bearings B15 are spaced apart from each other, and the central shaft 4 is provided in the bearing B15. At the same time, a gap is left between the upper end of the shaft sleeve 7 and the support member 18, and a bearing A17 is provided in the gap. The upper and lower ends of the central shaft 4 pass through the bearing A17 and the bearing B15 respectively, so that the central shaft 4 can smoothly drive the support member 18 to rotate, thereby driving the grinding roller to rotate.

[0031] In this embodiment, the bearing frame 2 is fixed to the base 1 by bolts. Specifically, the bearing frame has an outwardly extending expansion arm, and a first step for placing the expansion arm is provided on the base 1. After the expansion arm is placed on the first step, the two are fixed by bolts.

[0032] In this embodiment, the blade assembly includes a blade frame 11 fixedly connected to a support member 18, a blade frame lower seat 12 is provided at the front end of the blade frame, and a blade 13 is provided on the blade frame lower seat. The support member 18 enables the blade 13 to rotate synchronously with the central shaft 4.

[0033] In this embodiment, a cover cylinder 3 is provided on the base 1 to cover the grinding roller device 6. The cover cylinder 3 should have a sufficient height to limit the processing area of ​​the material and prevent the material from scattering to the outside and polluting the environment.

[0034] In order to increase the material shoveled by the blade, a pad 10 is provided between the extension arm and the first step in this embodiment to raise the position of the central axis 4, so that the blade can shovel more materials during the rotation process, increase the contact area between the grinding roller and the grinding ring 8 on the grinding roller device, and improve the output. In this embodiment, the central axis is raised by 2 cm through the use of the pad 10, and the output can be maximized at this height position.

[0035] Preferably, in order to prevent the product powder particles from getting stuck in the gap between the arm and the base 1, a second step is provided on the base and a first groove is provided on the arm. The bottom surface of the first groove is a horizontal surface, and the bottom surface of the second step is a horizontal surface and is flush with the bottom surface of the first groove. The lining plate 9 is provided on the first groove and the second step and is tightly fitted with the edges of the first groove and the second step. The lining plate 9 covers the bolts that lock the arm and the base 1 to avoid the influence of the material on the bolts and to minimize the sinking of the material powder particles to the outside.

[0036] In this embodiment, a return air box 16 is arranged outside the base, an air duct connected to the return air box 16 is arranged inside the base, and an air duct guard plate 14 is arranged inside the air duct. As in the prior art, the airflow of the blower blows the ground fine powder to the classifier above the grinding roller device for screening, and the coarse particles still fall back into the grinding roller device for re-grinding.

[0037] When in use, the motor drives the central shaft 4 to rotate at a high speed, driving the scraper 13 and the grinding roller to rotate at a high speed. At this time, the scraper 13 will lift the material at the bottom upwards, and the high-speed rotating grinding roller and the grinding ring 8 cooperate to grind the material particles to make them smaller and lighter. The blower provides an upward airflow, which is guided to the grinding area along the air duct guard plate 14, so that the particles broken by the grinding roller and the grinding ring 8 are blown upward as a whole, among which the fine powder is screened and captured by the classifier, and the heavy particles sink and re-enter the grinding area, and are ground by the grinding roller and the grinding ring 8 again, and finally a qualified fine powder product is obtained.

[0038] The results of material performance analysis after transformation are shown in Table 2:

[0039] Serial number Fineness (mesh) Water dispersibility 1 0.009 86.5 2 0.014 85.1 3 0.011 85.5 4 0.005 86 5 0.007 85.3 6 0.009 86.2 7 0.009 85.5 8 0.012 85.1 9 0.011 84.5 10 0.016 86.2 average value 0.0103 85.59

[0040] Table 2: Material performance analysis after transformation

[0041] The difference in material performance before and after the transformation is shown in Table 3:

[0042] Fineness (mesh) Water dispersibility Mean before transformation 0.0436 81.08 Mean after transformation 0.0103 85.59 Difference -0.0333 4.51

[0043] Table 3: Differences in material properties before and after transformation

[0044] After the transformation, the output increased from 3.6t / h to 4.3t / h; the performance of the material was significantly improved: the fineness was reduced by 0.0333, and the water dispersibility was increased by 4.51.

[0045] The utility model raises the central axis so that the scraper can scoop up more materials, thereby increasing the contact area between the grinding roller and the grinding ring on the grinding roller device, improving the output, and also improving the fineness, water dispersion and other properties of the outputted materials.

[0046] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A Raymond mill central axis grinding roller device, characterized in that: It comprises a base, on which a bearing frame assembly is arranged, a central axis is pivotally connected to the bearing frame assembly, a plum blossom frame is arranged on the upper end of the central axis, and a grinding roller device is arranged on the plum blossom frame located on the outer side of the central axis; a scraper assembly is arranged above the base, the plum blossom frame and the scraper assembly are fixedly connected via a support member, the support member is spaced apart from the central axis, and the support member rotates synchronously with the central axis via the plum blossom frame; a grinding ring corresponding to the scraper assembly is arranged on the base; a pad for lifting the central axis upward is arranged between the base and the bearing frame assembly; a cover cylinder for covering the grinding roller device is arranged on the base.

2. The central axis grinding roller device of the Raymond mill according to claim 1 is characterized in that: The backing plate lifts the central axis upward by 2 cm.

3. The central axis grinding roller device of the Raymond mill according to claim 1 or 2, characterized in that: The base is provided with a shaft sleeve, the central shaft is arranged in the shaft sleeve, and the upper end of the central shaft is exposed outside the shaft sleeve and connected to the plum blossom frame.

4. The central axis grinding roller device of the Raymond mill according to claim 3 is characterized in that: A gap is left between the upper end of the shaft sleeve and the support member, and a bearing A is arranged in the gap.

5. The central axis grinding roller device of the Raymond mill according to claim 1 is characterized in that: A return air box is arranged on the outside of the base, an air duct connected with the return air box is arranged inside the base, and an air duct guard plate is arranged inside the air duct.

6. The central axis grinding roller device of the Raymond mill according to claim 1 is characterized in that: The blade assembly comprises a blade frame fixedly connected to a support member, a blade frame lower seat is arranged at the front end of the blade frame, and a blade is arranged on the blade frame lower seat.

7. The central axis grinding roller device of Raymond mill according to claim 1, characterized in that: A lining plate is provided at the joint of the base and the bearing frame assembly, and the lining plate is provided on the upper end surface of the base and the bearing frame assembly.

8. The central axis grinding roller device of Raymond mill according to claim 1, characterized in that: The bearing frame assembly includes a bearing frame, a bearing cavity is arranged in the bearing frame, a bearing B is arranged in the bearing cavity, and the central axis is arranged in the bearing B; the bearing frame has an outwardly extending expansion arm, and the expansion arm is overlapped on the base.

9. The central axis grinding roller device of the Raymond mill according to claim 8, characterized in that: The base is provided with a first step for placing the extension arm and a second step for placing the lining plate, the first step is provided with the pad, and the extension arm is placed on the pad; the extension arm is locked with the base by bolts.

10. The central axis grinding roller device of the Raymond mill according to claim 9, characterized in that: A first groove is arranged at the upper end of the extension arm, the bottom surface of the first groove is a horizontal plane, the bottom surface of the second step is a horizontal plane and is flush with the bottom surface of the first groove, and the lining plate is arranged on the first groove and the second step and is tightly fitted with the edges of the first groove and the second step.

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