WO2021189218A1 - 一种具有球头柱钉磨辊的立磨以及磨辊、磨盘 - Google Patents

一种具有球头柱钉磨辊的立磨以及磨辊、磨盘 Download PDF

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Publication number
WO2021189218A1
WO2021189218A1 PCT/CN2020/080753 CN2020080753W WO2021189218A1 WO 2021189218 A1 WO2021189218 A1 WO 2021189218A1 CN 2020080753 W CN2020080753 W CN 2020080753W WO 2021189218 A1 WO2021189218 A1 WO 2021189218A1
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Prior art keywords
ball head
grinding
grinding roller
grinding disc
stud
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PCT/CN2020/080753
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English (en)
French (fr)
Inventor
郝理想
李晓平
贲道春
韩楷
丁同华
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江苏鹏飞集团股份有限公司
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Priority to PCT/CN2020/080753 priority Critical patent/WO2021189218A1/zh
Publication of WO2021189218A1 publication Critical patent/WO2021189218A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs

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  • the invention relates to the technical field of a vertical mill, a vertical mill grinding roller and a vertical grinding disc equipment, and in particular to a vertical mill with a ball head stud grinding roller, a grinding roller, and a grinding disc.
  • the speed of the grinding disc of the cement vertical mill is much lower than that of the raw material vertical mill.
  • the force of the grinding roller and the grinding disc liner increases greatly.
  • the traditional type of grinding roller and grinding disc is either integrally cast or surface welded with wear-resistant materials.
  • the cement vertical mill vibrates too much during operation, and the material layer is not easy to form.
  • the grinding roller and the grinding disc liner are severely worn in a short period of time. More serious grinding roller cracks also occur from time to time, which seriously affects production.
  • the normal operation of the system and the decline in production efficiency have greatly increased the maintenance volume and cost of customers.
  • invented a cement vertical mill with ball head stud grinding roller grinding disc bushing invented a cement vertical mill with ball head stud grinding roller grinding disc bushing.
  • the present invention provides a method for arranging a number of wear-resistant hard alloy steel ball studs, grinding rollers and grinding disk bushings evenly on the surfaces of grinding rollers and grinding disk bushings. Wear-resistant guard plates are provided at both ends.
  • the gap between the wear-resistant hard alloy steel ball head studs that are evenly arranged in a staggered position can not only effectively discharge the gas in the material, but also make it easier for the cement vertical mill to form a stable material layer and reduce vibration.
  • the technical scheme adopted by the present invention is: a vertical mill with a ball-head stud grinding roller, including a grinding disc and a grinding roller, and the grinding roller includes a grinding roller body;
  • a number of evenly arranged ball-head studs are inserted along the outer surface of the grinding roller body, and each ball-head stud is inserted into the corresponding insertion hole of the grinding roller body.
  • the part of the top of the grinding disc facing the outer side of the grinding disc is also fixed on the outer side wall of the grinding disc by a pressing plate, and the dynamic wind ring rotates together with the grinding disc, in which:
  • the dynamic wind ring has a connecting bush and dynamic blades
  • the dynamic blade is fixed on the outside of the connecting bush and is used to drive the air flow in the space outside the dynamic blade when it rotates with the grinding disc.
  • the top connecting ring of the dynamic air ring is detachably fixed on the top of the grinding disc by using a plurality of fixing screws to pass through a pressing plate, which facilitates the removal of the dynamic air ring.
  • the grinding disc is provided with a grinding disc bushing at a position facing the top of the grinding roller, and the inner wall of the grinding disc bushing is also provided with a plurality of ball-head studs evenly arranged and inserted into the inner wall of the grinding disc.
  • top and bottom parts of the grinding disc liner are respectively fixed with a top grinding disc liner guard plate and a bottom grinding disc liner guard plate.
  • top grinding disc liner guard plate is detachably fixed to the top of the top connecting ring of the dynamic air ring by fastening screws
  • bottom grinding disc liner guard plate is also detachably fixed to the grinding disc liner by several fastening screws.
  • this structure can not only play a better protective effect on the grinding disc bushing, but also can reasonably combine the grinding disc bushing with the dynamic wind ring.
  • top and bottom positions of the grinding roller body are respectively provided with a grinding roller guard plate, and the grinding roller guard plate is fixed on the grinding roller body through a bolt connection.
  • each of the ball studs includes an exposed ball head, an inserting part and an inserted ball head, wherein the exposed ball head is exposed in the air, and the radius of the exposed ball head is larger than the radius of the inserted ball head.
  • the ball head stud is made of wear-resistant hard alloy steel.
  • each ball stud inserted into the ball head is 10-20 mm, and the radius of the exposed ball head is 15-25 mm.
  • a ball head stud grinding roller includes a grinding roller body.
  • a number of uniformly arranged ball head studs are inserted along the outer surface of the grinding roller body, and each ball head stud is inserted into the grinding roller.
  • the body corresponds to its insertion hole, each of the ball studs includes an exposed ball head, an inserting part and an inserted ball head, wherein the exposed ball head is exposed in the air, and the radius of the exposed ball head is larger than that of the inserted ball head. The radius of the head of the ball.
  • a ball-head stud millstone The top position of the millstone facing the grinding roller is provided with a millstone bushing.
  • the inner wall of the millstone bushing is also provided with a number of ball-head studs evenly arranged and inserted into the inner wall of the millstone.
  • Each of the ball-head studs includes The exposed ball head, the insertion part and the inserted ball head, wherein the exposed ball head is exposed in the air, and the radius of the exposed ball head is larger than the radius of the inserted ball head.
  • the present invention has the following beneficial effects: 1. It provides a vertical mill in which a number of uniformly arranged ball head studs are inserted along the outer surface of the roller body of the grinding roller of a vertical mill. , Has the following benefits,
  • the grinding roller of the vertical mill realizes the enhancement of the surface punching strength of the grinding roller.
  • the grinding roller of the vertical mill forms an effective gap for the discharge of material and gas between the uniformly arranged ball-head studs.
  • the gap refers to the gap between the ball heads of each ball head stud.
  • the ball head shape design of the ball head stud increases the contact area between the material and the material, so that the material can be more fully ground, squeezed and sheared, so that the cement contains more 3-30 ⁇ m fine particles, cement particle level
  • the overall distribution range of the compound is wider, so that the cement has a more reasonable particle gradation and improves the activity of the cement.
  • the ball head stud has a ball head, which has high impact resistance and wear resistance in all directions. It also improves the service life of the grinding roller and the grinding disc liner and the operation rate of the equipment.
  • the ball head stud is directly inserted into the installation hole arranged on the roller body of the grinding roller, which is simple to install and replace, and reduces the manufacturing and maintenance costs of the grinding roller and the grinding disc liner.
  • the ball head stud grinding disc and the ball head stud grinding roller can be used alone or in combination, and the effect of the combined use is better, and its beneficial effects are as described above.
  • Fig. 1 is a structural diagram of an embodiment of a vertical mill with a ball head pin grinding roller
  • Figure 2 is an outline structure diagram of an embodiment of the grinding roller
  • Figure 3 is a cross-sectional view of the grinding roller of Figure 2;
  • Fig. 4 is a view from the direction A of Fig. 3;
  • Figure 5 is a partial schematic diagram of the arrangement of the ball head studs on the surface of the grinding roller
  • Figure 6 is a structural diagram of an embodiment of the grinding disc
  • Fig. 7 is a structural diagram of direction C in Fig. 6;
  • Figure 8 is a partial structure diagram of the grinding disc bushing 7
  • Fig. 9 is a view from the direction B of Fig. 8;
  • Figure 10 is a cross-sectional view of an embodiment of a ball stud
  • Figure 11 is a cross-sectional view of the dynamic air ring
  • Figure 12 is a top view of the dynamic wind ring
  • Figure 13 is a front view of the blades of the dynamic wind ring
  • 1-transmission device 2-pressurizing device, 3-overhaul cylinder, 4-grinding disc, 5-grinding roller, 51-grinding roller body, 511-plug hole; 6-ball head stud, 61-bare Ball head, 62-insertion part, 63-insert ball head, 7-grinding disc bushing, 8-top grinding disc bushing guard plate, 9-compression plate, 10-dynamic air ring, 101-connecting bushing, 102 -Dynamic blade, 103-top connecting ring; 11-fastening screw, 12-bottom grinding disc bushing guard plate, 13-grinding roller guard plate, 14-bolt connecting piece.
  • a vertical mill with a ball head stud grinding roller includes a grinding disc 4 and a grinding roller 5.
  • the grinding roller 5 includes a grinding roller body 51; wherein:
  • the grinding roller body 51 has a number of evenly arranged ball-head studs 6 inserted along its outer surface, and each ball-head stud 6 is inserted into the grinding roller body. 51 Corresponding to its insertion hole 511, a number of ball-head studs are evenly arranged on the surface of the grinding roller and the grinding disc liner.
  • the gap between the uniformly-displaced ball-head studs can not only be effectively discharged
  • the gas in the material makes it easier for the cement vertical mill to form a stable material layer, reduces vibration, and can make the material form a solid material pad and the protection of the grinding roller and the substrate of the grinding disc liner, which improves the performance of the grinding roll and disc liner.
  • Service life and equipment operation rate; ball head studs are easy to install and replace, which reduces the manufacturing and maintenance costs of grinding rollers and grinding disc liners.
  • the vertical mill with a ball-head stud grinding roller is mainly applied to the vertical mill with a transmission device 1, a pressurizing device 2 and an overhaul oil cylinder 3 as shown in Figure 1.
  • the pressurizing device 2 described here is directed to the mill through a working oil cylinder.
  • the roller and the grinding disc apply pressure, and the grinding pressure of the grinding roller adopts hydraulic pressure, and the pressure, the action of the roller lifting and the adjustment of the pressure are remotely controlled, which realizes unmanned operation on site.
  • the overhaul cylinder 3 can make the grinding rollers turn out of the machine for overhaul, the replacement of the ball head studs and the large overhaul space for the mill make the overhaul operation very convenient. Even the vertical mill without the transmission device 1, the pressurizing device 2 and the overhaul cylinder 3 as shown in Fig. 1, as long as it is equipment used for grinding.
  • the top of the grinding disc 4 facing the outer part of the grinding disc is also fixed on the outer side wall of the grinding disc 4 by a pressing plate 9.
  • the dynamic wind ring 10 rotates together with the grinding disc 4, wherein: as shown in FIG. 11, the dynamic wind ring 10 has a connecting bush 101 and a dynamic blade 102; the structural diagram of the dynamic blade 102 can also be observed from the combination of FIGS. 6 and 7.
  • the connecting bushing 101 is sleeved on the outside of the grinding disc and has a top connecting ring 103; the top connecting ring 103 of the dynamic air ring 10 is detachably fixed on the top of the grinding disc 4 through a pressing plate 9 using a plurality of fixing screws 11, which is convenient Dynamic wind ring removal.
  • the dynamic blade 102 is fixed on the outside of the connecting bush 101 for driving the air flow in the space outside the dynamic blade when it rotates with the grinding disc, that is, when the dynamic wind ring rotates with the grinding disc ,
  • the dynamic blades connected to the outside of the grinding disc agitate the air flow outside the grinding disc, so that the three-dimensional flow field inside the vertical mill is more stable, and the internal resistance of the mill is reduced, thereby improving the separation efficiency of the separator and achieving a good powder separation effect.
  • the grinding disc 4 is provided with a grinding disc bushing 7 facing the top of the grinding roller 5.
  • the inner wall of the grinding disc bushing 7 is also provided with a number of uniformly arranged and inserted into the inner wall of the ball head studs 6, uniformly fixed on the
  • the ball head studs on the grinding disc bushing and the ball head studs fixed on the outer wall of the grinding roller can more effectively discharge the gas generated in the material, making it easier for the cement vertical mill to form a stable material layer and reduce vibration , It can also make the material generate a solid material pad and the protection of the grinding roller and the grinding disc liner substrate, which improves the service life of the grinding roller and the grinding disc liner and the operation rate of the equipment; the wear-resistant hard alloy steel ball head stud installation and The replacement is simple, and the manufacturing and maintenance costs of the grinding roller and the grinding disc liner are reduced.
  • top and bottom parts of the grinding disc bushing 7 are also fixed with a top grinding disc bushing guard plate 8 and a bottom grinding disc bushing guard plate 12 respectively. It provides better protection, improves the anti-vibration effect and the degree of wear resistance of the grinding disc bushing, which has greater benefits for the improvement of its service life.
  • the arrangement of the ball head studs 6 on the inner wall of the grinding disc bushing 7 is preferably in the area where the grinding disc bushing 7 approaches the grinding roller from its horizontal position, namely
  • the density of the top ball head studs 6 in the grinding area A is slightly denser, and the density of the ball head studs 6 in the area extending from its horizontal position to the center of the grinding disc is slightly lower, that is, the density of the ball head studs 6 in the non-grinding area B
  • the density of the ball head studs 6 is slightly thinner, and the top area C of the grinding disc bushing 7 is protected by the top grinding disc bushing guard plate 8 to prevent the matrix of the grinding disc bushing 7 from being worn out. This kind of protection can make the whole vertical mill with the ball head stud grinding roller have a higher service life under the condition of reasonable structure setting and low cost.
  • the top grinding disc liner guard plate 8 is detachably fixed to the top of the top connecting ring 103 of the dynamic air ring 10 by a fastening screw 11. It can be seen from Fig. 8 that the bottom grinding disc liner guard plate 12 is also detachably fixed to the bottom of the grinding disc bushing 7 by a number of fastening screws 11. This structure can not only protect the top and bottom of the grinding disc bushing, but also can connect the grinding disc bushing to the bottom of the grinding disc bushing. The dynamic wind ring is combined reasonably.
  • the top and bottom positions of the grinding roller body 51 are also provided with a grinding roller guard plate 13 respectively, which realizes the adjustment of the top and bottom of the grinding roller body 51
  • the grinding roller guard plate 13 is fixed on the grinding roller body 51 by a bolt connection member 14, and the grinding roller guard plate 13 can be disassembled and installed in time to realize daily maintenance and protection.
  • each of the ball studs 6 includes a bare ball head 61, an insertion portion 62 and an inserted ball head 63, wherein the bare ball head 61 is exposed to the air And the radius of the exposed ball head 61 is greater than the radius of the inserted ball head 63 to ensure that the inserted ball head 63 can be inserted into its corresponding grinding roller body or grinding disc bushing, while inserting the ball head 63 will not cause damage.
  • the body of the grinding roller or the grinding disc bushing is damaged and damaged.
  • the exposed ball head on the grinding roller body and the exposed ball head of the grinding disc bushing can make changes to the material entering between the grinding roller and the grinding disc bushing.
  • the ball head stud 6 is made of wear-resistant hard alloy steel, such as tungsten steel alloy, etc.
  • the specific alloy steel grades are YG15C, YG20, YG15, ZD45. 1. ZD45.3, ZD30, the hardness of these alloy steels is between 85.0-88.3HRA, the strength is between 2500-2950N/mm 2 and the density is between 13.4-14.56g/m 3.
  • the advantages of using these materials are It has good impact resistance and wear resistance, and can maintain a long use time during the material impact and pressure resistance process of the vertical mill.
  • each ball head stud 6 inserted into the ball head 63 is 10-20mm, and the radius of the exposed ball head 61 is 15-25mm.
  • the ball head in this size range The studs 6 can meet the grinding requirements of most materials for vertical mills, and the ball head studs in these size ranges can also be manufactured using general molds.
  • the ball head stud grinding roller includes a grinding roller body 51, and a number of uniformly arranged ball head studs 6 are inserted along the outer surface of the grinding roller body 51.
  • the ball head stud 6 is inserted into the corresponding insertion hole 511 of the grinding roller body 51.
  • each ball head stud 6 includes an exposed ball head 61, an insertion portion 62 and an insertion The ball head 63, in which the bare ball head 61 is exposed in the air, and the radius of the bare ball head 61 is larger than the radius of the inserted ball head 63.
  • the overall arrangement can be relatively uniform.
  • the density of the arrangement can be designed according to the particle size of the material to be ground by the vertical mill and the hardness of the material, and the arrangement is Refer to Figure 5 for the effect on the roller body of the grinding roller.
  • the design principle can follow the following principles:
  • the density of the ball head studs 6 can be arranged smaller, and the arrangement is sparser.
  • the density of the ball head studs 6 should be larger and the arrangement should be thicker.
  • the density of the ball head stud 6 is smaller and the layout is sparse.
  • each of the ball studs 6 includes a bare ball head 61, an insertion portion 62 and an inserted ball head 63, wherein the bare ball head 61 is exposed to the air, and the radius of the ball head 61 is exposed Larger than the radius of the ball head 63 inserted.
  • each liner unit is installed with a number of uniform ball-head studs 6, and then each liner unit is separately fixed and installed
  • the grinding disc of this structure realizes the enhancement of the surface punching strength of the grinding roller when in use.
  • the grinding roller of the vertical mill forms an effective drainage between the uniformly arranged ball head studs when it is working.
  • the gap of material gas the so-called gap here refers to the gap between the ball heads of each ball head stud.
  • the ball head shape design of the ball head stud increases the contact area between the material and the material, and the material can be more fully ground, squeezed and sheared, so that the cement contains more 3-30 ⁇ m fine particles, and the cement particle gradation is generally distributed The range is wider, so that the cement has a more reasonable particle gradation, and the activity of the cement is improved.
  • the dynamic air ring is fixed on the grinding disc with several fastening screws and rotates with the grinding disc.
  • the rotating dynamic air ring can well adjust the flow direction of the internal air volume of the mill, so that The three-dimensional flow field inside the mill is more stable, and the internal resistance of the mill is reduced, so that the separation efficiency of the separator can be improved, and a good powder separation effect can be achieved.
  • the dynamic air ring is fixed on the grinding disc with screws. After the dynamic air ring is worn out, it is convenient and quick to replace, which saves maintenance costs and time. Installation and replacement method of wear-resistant hard alloy steel ball head studs.

Abstract

一种具有球头柱钉磨辊的立磨以及磨辊、磨盘，立磨包括磨盘（4）和磨辊（5），磨辊（5）的磨辊辊体（51）沿其外表面上插接有若干均匀排列的球头柱钉（6），每一个球头柱钉（6）插接在磨辊辊体（51）对应于其的插接孔（511）内，磨盘（4）朝向磨辊（5）的顶部位置设有磨盘衬套（7），磨盘衬套（7）内壁也设有若干均匀布置并且插入其内壁的球头柱钉（6），球头柱钉（6）具有裸露球头部（61）、插入部（62）和插入球头部（63）。该结构的立磨以及磨辊、磨盘使水泥立磨更容易形成稳定的料层，减小振动，同时还提高了磨辊、磨盘衬套的使用寿命和设备的运转率，球头柱钉安装和更换简单、更换周期短。

Description

一种具有球头柱钉磨辊的立磨以及磨辊、磨盘 技术领域
本发明涉及立磨、立磨磨辊以及立磨磨盘设备技术领域，特别是涉及一种具有球头柱钉磨辊的立磨以及磨辊、磨盘。
背景技术
水泥立磨的磨盘转速较生料立磨降低了很多，磨辊、磨盘衬板受力增加很大，传统的磨辊磨盘型式不管是整体铸造，还是表面堆焊耐磨材料，在使用过程中都出现了水泥立磨在运行中振动过大，料层不容易形成，磨辊、磨盘衬板在短时间内磨损严重，更严重的磨辊开裂的情况也时有发生，这严重影响了生产的正常运行，生产效率下降，使客户的维修量和成本大大增加。鉴于以上情况，发明了一种球头柱钉磨辊磨盘衬套水泥立磨。
发明内容
为了克服上述现有技术的不足，本发明提供了一种用于在磨辊和磨盘衬套的表面错位均匀的布置若干个耐磨硬质合金钢球头柱钉，磨辊和磨盘衬套的两端均设有耐磨护板。错位均匀布置的耐磨硬质合金钢球头柱钉之间的间隙，不仅可以有效的排泄出物料中的气体，使水泥立磨更容易形成稳定的料层，减小振动。而且可以使物料生成坚实的料垫和磨辊、磨盘衬套基体的保护，提高了磨辊、磨盘衬板的使用寿命和设备的运转率；耐磨硬质合金钢球头柱钉安装和更换简单，降低了磨辊、磨盘衬套的制造和维修成本的一种具有球头柱钉磨辊的立磨。
本发明所采用的技术方案是：一种具有球头柱钉磨辊的立磨，包括磨盘和磨辊，磨辊包括磨辊辊体；
所述磨辊辊体，沿其外表面上插接有若干均匀排列的球头柱钉，每一个球头柱钉，插接在磨辊辊体对应于其的插接孔内。
进一步地，磨盘顶部朝向磨盘外侧部分还通过一块压紧板将动态风环固定在磨盘的外侧壁上，动态风环与磨盘一同转动，其中：
所述动态风环，具有连接衬套以及动态叶片；
连接衬套，套在磨盘外侧，具有顶部连接环；
动态叶片，固定在连接衬套的外侧，用于其随磨盘旋转时驱动动态叶片外侧空间的空气流动。
进一步地，动态风环的顶部连接环使用若干个固紧螺钉穿过一块压紧板可拆卸地固定在磨盘顶部，方便动态风环拆卸。
进一步地，磨盘朝向磨辊的顶部位置设有磨盘衬套,磨盘衬套内壁也设有若干均匀布置并且插入其内壁的球头柱钉。
进一步地，磨盘衬套顶部和底部分还分别固定有顶部磨盘衬套护板和底部磨盘衬套护板。
进一步地，顶部磨盘衬套护板通过紧固螺钉可拆卸地固定在动态风环的顶部连接环的顶部，底部磨盘衬套护板也通过若干个紧固螺钉可拆卸地固定在磨盘衬套的底部，该结构不但可以对磨盘衬套起到较好的防护作用，还能够将磨盘衬套与动态风环合理地结合起来。
进一步地，所述磨辊辊体的顶部以及底部位置还分别设有一块磨辊护板，所述磨辊护板通过螺栓连接件固定在磨辊辊体上。
进一步地，每一个所述球头柱钉包括裸露球头部、插入部和插入球头部，其中裸露球头裸露在空气中，并且裸露球头部的半径大于插入球头部的半径。
进一步地，所述球头柱钉由耐磨硬质合金钢制成。
进一步地，每一个所述球头柱钉的插入球头部的半径范围为10-20mm,裸露球头部的半径范围为15-25mm。
一种球头柱钉磨辊，包括磨辊辊体，所述磨辊辊体沿其外表面上插接有若干均匀布置的球头柱钉，每一个球头柱钉插接在磨辊辊体对应于其的插接孔内，每一个所述球头柱钉包括裸露球头部、插入部和插入球头部，其中裸露球头裸露在空气中，并且裸露球头部的半径大于插入球头部的半径。
一种球头柱钉磨盘，磨盘朝向磨辊的顶部位置设有磨盘衬套,磨盘衬套内壁也设有若干均匀布置并且插入其内壁的球头柱钉，每一个所述球头柱钉包括裸露球头部、插入部和插入球头部，其中裸露球头裸露在空气中，并且裸露球头部的半径大于插入球头部的半径。
与现有技术相比，本发明的有益效果是：1.提供了一种立磨的磨辊的磨辊辊体上沿其外表面上插接有若干均匀排列的球头柱钉的立磨，有如下好处，
其一，实现了对磨辊的表面冲压强度的增强，同时该立磨的磨辊在工作时，其在各个均匀排列的球头柱钉之间形成了有效的排泄物料气体的间隙，这里所谓的间隙指的是各个球头柱钉的球头之间的间隙，这些间隙为随同物料进入立磨磨盘的气体在物料研磨时提供了排除空间，使水泥立磨更容易形成稳定的料层，减小振动。
其二，球头柱钉的球头形状设计增加了物料与其接触面积，物料可以得到更加充分的研磨、挤压与剪切，从而使得水泥中含有更多3～30μm的微细颗粒，水泥颗粒级配总体分布范围更宽，进而使水泥具有更加合理的颗粒级配，提高了水泥的活性。
2.球头柱钉的具有球头部，各个方向的耐冲击以及耐磨性能高，同时还提高了磨辊、磨盘衬板的使用寿命和设备的运转率。
3.球头柱钉通过布置在磨辊辊体上的安装孔直接插入其内，安装和更换简单，降低了磨辊、磨盘衬板的制造和维修成本。
4.球头柱钉磨盘以及球头柱钉磨辊可以单独使用，也可以配合使用，配合使用的效果更佳，其有益效果如上所述。
附图说明
图1为一种具有球头柱钉磨辊的立磨的一个实施例的结构图；
图2为磨辊的一个实施例的外形结构图；
图3为图2的磨辊的剖视图；
图4为图3的A向的向视图；
图5为球头柱钉在磨辊表面的排列布置局部示意图；
图6为磨盘的一个实施例的结构图；
图7为图6的C向的结构图；
图8为磨盘衬套7的局部结构图；
图9为图8的B向的向视图；
图10为球头柱钉的一个实施例的剖视图；
图11为动态风环的剖视图；
图12为动态风环的俯视图；
图13为动态风环的叶片的主视图；
其中：1-传动装置，2-加压装置，3-检修油缸，4-磨盘，5-磨辊，51-磨辊辊体，511-插接孔；6-球头柱钉，61-裸露球头部，62-插入部，63-插入球头部，7-磨盘衬套，8-顶部磨盘衬套护板，9-压紧板，10-动态风环，101-连接衬套，102-动态叶片，103-顶部连接环；11-紧固螺钉，12-底部磨盘衬套护板，13-磨辊护板，14-螺栓连接件。
具体实施方式
为了加深对本发明的理解，下面结合附图和实施例对本发明进一步说明，该实施例仅用于解释本发明，并不对本发明的保护范围构成限定。
在本发明的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的组合或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。另外，本实用新型实施例的描述过程中，所有图中的“上”、“下”、“前”、“后”、“左”、“右”等器件位置关系，均以图1为标准。
如图1所示，一种具有球头柱钉磨辊的立磨，包括磨盘4和磨辊5，磨辊5包括磨辊辊体51；其中：
如图2和图3所示，所述磨辊辊体51，沿其外表面上插接有若干均匀排列的球头柱钉6，每一个球头柱钉6，插接在磨辊辊体51对应于其的插接孔511内，在磨辊和磨盘衬板的表面错位均匀的布置若干个球头柱钉，错位均匀布置的球头柱钉之间的间隙，不仅可以有效的排泄出物料中的气体，使水泥立磨更容易形成稳定的料层，减小振动，而且可以使物料生成坚实的料垫和磨辊、磨盘衬板基体的保护，提高了磨辊、磨盘衬板的使用寿命和设备的运转率；球头柱钉安装和更换简单，降低了磨辊、磨盘衬板的制造和维修成本。
具有球头柱钉磨辊的立磨主要应用于如图1所示的具有传动装置1、加压装置2和检修油缸3的立磨上，这里所述的加压装置2通过工作油缸向磨辊和磨盘施加压力，磨辊研磨压力采用液压，远程控制加压、抬辊动作及调整压力，实现了现场无人操作。检修油缸3可以使磨辊翻出机外检修，更换球头柱钉及磨机检修空间大，检修作业十分方便。就算是没有如图1所示的传动装置1、加压装置2和检修油缸3的立磨，只要是用于研磨的设备均可。
在上述实施例中，如图6所示，磨盘4顶部朝向磨盘外侧部分还通过一块压紧板9将动态风环10固定在磨盘4的外侧壁上，动态风环10与磨盘4一同转动，其中：如图11所示，所述动态风环10，具有连接衬套101以及动态叶片102；动态叶片102的结构图从图6和图7的结合中也可以观察得出来。
其中，连接衬套101套在磨盘外侧，具有顶部连接环103；动态风环10的顶部连接环103使用若干个固紧螺钉11穿过一块压紧板9可拆卸地固定在磨盘4顶部，方便动态风环拆卸。
如图12和图13所示，动态叶片102固定在连接衬套101的外侧，用于其随磨盘旋转时驱动动态叶片外侧空间的空气流动，也就是说当该动态风环随着磨盘转动时，连接在磨盘外侧的动态叶片搅动磨盘外侧的气流，使立磨内部的三维流场更加的稳定，减小磨机内部阻力，从而可以提高分离器的选粉效率，达到良好的选粉效果。
如图6和图8所示，磨盘4朝向磨辊5的顶部位置设有磨盘衬套7,磨盘衬套7内壁也设有若干均匀布置并且插入其内壁的球头柱钉6，均匀固定在磨盘衬套上的球头柱钉与磨辊辊体外壁上固定的球头柱钉，可以更有效地排泄出物料中产生的气体，使水泥立磨更容易形成稳定的料层，减小振动，还可以使物料生成坚实的料垫和磨辊、磨盘衬板基体的保护，提高了磨辊、磨盘衬板的使用寿命和设备的运转率；耐磨硬质合金钢球头柱钉安装和更换简单，降低了磨辊、磨盘衬板的制造和维修成本。磨盘衬套7顶部和底部分还分别固定有顶部磨盘衬套护板8和底部磨盘衬套护板12，顶部磨盘衬套护板和底部磨盘衬套护板对磨盘衬套的顶部以及底部进行了较好的保护，提高磨盘衬套的抗振效果，以及耐磨程度，对其使用寿命的提高具有较大的好处。
从图8中还可以看出来，磨盘衬套7内壁的球头柱钉6的排列方式，较佳的实施方式是，在磨盘衬套7自其水平位置向磨辊靠近的方向区域内，即粉磨区域A内顶部球头柱钉6布置的密度稍密，而在自其水平位置向磨盘中心位置延伸区域内的球头柱钉6布置的密度稍小,即非粉磨区域B内的球头柱钉6布置的密度稍稀，在磨盘衬套7的顶部区域C由顶部磨盘衬套护板8防护，防止磨盘衬套7的基体磨损。这种保护能够使得整个具有球头柱钉磨辊的立磨在结构设置合理、成本较低的情况下具有较高的使用寿命。
如图6所示，顶部磨盘衬套护板8通过紧固螺钉11可拆卸地固定在动态风环10的顶部连接环103的顶部，从图8中该可以看出，底部磨盘衬套护板12也通过若干个紧固螺钉11可拆卸地固定在磨盘衬套7的底部，该结构不但可以对磨盘衬套的顶部以及底部都能起到较好的防护作用，还能够将磨盘衬套与动态风环合理地结合起来。
从图2、图3和图4中均可以看出，所述磨辊辊体51的顶部以及底部位置还分别设有一块磨辊护板13，实现对磨辊辊体51的顶部以及底部的防护，所述磨辊护板13通过螺栓连接件14固定在磨辊辊体51上，可以及时拆卸以及安装磨辊护板13，实现日常的维护以及防护。
在球头柱钉6的制造过程中，可以将其设计为每一个所述球头柱钉6包括裸露球头部61、插入部62和插入球头部63，其中裸露球头61裸露在空气中，并且裸露球头部61的半径大于插入球头部63的半径，以确保插入球头部63能够插入其对应的磨辊辊体或磨盘衬套，同时插入球头部63也不会对磨辊辊体或磨盘衬套的本体产生伤害以及破坏，磨辊辊体上的裸露球头部与磨盘衬套的裸露球头部能够对进入磨辊与磨盘衬套之间的物料进行更为充分的挤压，耐磨以及抗震性能，整体式提高了磨辊、磨盘衬板的使用寿命和设备的运转率；耐磨硬质合金钢球头柱钉安装和更换简单，降低了磨辊、磨盘衬板的制造和维修成本。这种球头柱钉的结构从图1、图3、图6和图8中可以看出来。
在制作球头柱钉6时，所述球头柱钉6由耐磨硬质合金钢制成，诸如钨钢合金等制成，具体选择时的合金钢牌号有YG15C、YG20、YG15、ZD45.1、ZD45.3、ZD30，这些合金钢的硬度在85.0-88.3HRA之间，强度在2500-2950N/mm 2之间，密度在13.4-14.56g/m 3之间，使用这些材质的好处是具有较好的耐冲击性能以及耐磨性能，在立磨的物料冲击以及耐压过程中，能够保持较长的使用时限。
如图10所示，每一个所述球头柱钉6的插入球头部63的半径范围为10-20mm，裸露球头部61的半径范围为15-25mm，这种尺寸范围内的球头柱钉6能够满足立磨的大多数物料的研磨要求，并且这些尺寸范围内的球头柱钉制造也是可以使用通用的模具。
从图2和图3中看出，球头柱钉磨辊包括磨辊辊体51，所述磨辊辊体51沿其外表面上插接有若干均匀布置的球头柱钉6，每一个球头柱钉6插接在磨辊辊 体51对应于其的插接孔511内，结合图10看出，每一个所述球头柱钉6包括裸露球头部61、插入部62和插入球头部63，其中裸露球头61裸露在空气中，并且裸露球头部61的半径大于插入球头部63的半径。具体的，该球头柱钉6在磨辊辊体51上布置时，整体比较均匀即可，至于布置的密度，可以根据立磨研磨的物料颗粒度大小以及物料的硬度设计，其布置处在磨辊辊体上的效果参见图5所示。设计的原则遵循如下原则即可：
一、对研磨的初始颗粒度大并且要求细度不是很细，可以将球头柱钉6的密度布置小一些，布置的稀一些。
二、对于研磨的初始颗粒度大并且要求细度细的，球头柱钉6的密度布置大一些，布置的稠一些。
三、对于研磨的初始颗粒度小并且要求细度细的还是不细的，球头柱钉6的密度布置小一些，布置的稀一些。
如图3和图4可以看出，对于球头柱钉磨盘，其磨盘4朝向磨辊5的顶部位置设有磨盘衬套7,磨盘衬套7内壁也设有若干均匀布置并且插入其内壁的球头柱钉6，每一个所述球头柱钉6包括裸露球头部61、插入部62和插入球头部63，其中裸露球头61裸露在空气中，并且裸露球头部61的半径大于插入球头部63的半径。磨盘衬套7在具体实施过程中，可以将其设置成若干块单独的衬板单元，每一块衬板单元内壁安装若干均匀的球头柱钉6，然后将每一块衬板单元单独固定安装在磨盘顶部位置，只要保证所有的衬板单元组合之后合成完整的磨盘衬套，然后将磨盘顶部研磨区域完全覆盖即可。这种结构的磨盘，在使用时，实现了对磨辊的表面冲压强度的增强，同时该立磨的磨辊在工作时，其在各个均匀排列的球头柱钉之间形成了有效的排泄物料气体的间隙，这里所谓的间隙指的是各个球头柱钉的球头之间的间隙，这些间隙为随同物料进入立磨磨盘的气体在物料研磨时提供了排除空间，使水泥立磨更容易形成稳定的料层，减小振动。
球头柱钉的球头形状设计增加了物料与其接触面积，物料可以得到更加充分的研磨、挤压与剪切，从而使得水泥中含有更多3～30μm的微细颗粒，水泥颗粒级配总体分布范围更宽，进而使水泥具有更加合理的颗粒级配，提高了水泥的活性。
动态风环用若干个紧固螺钉固定在磨盘上，随磨盘一起旋转，与焊接在下壳体内部的静态风环相比，旋转的动态风环可以很好的调节磨机内部风量的流向，使磨机内部的三维流场更加的稳定，减小磨机内部阻力，从而可以提高分离器的选粉效率，达到良好的选粉效果。另外动态风环是用螺钉固定在磨盘上，待动态风环磨损后，更换也很方便快捷，很好的节省的维修成本和时间。耐磨硬质合金钢球头柱钉安装和更换方法。
不管是设计在具有球头柱钉磨辊的立磨的球头柱钉，还是只设计在球头柱钉磨辊的球头柱钉磨辊，或者是只设计在球头柱钉磨盘的球头柱钉磨盘，球头柱钉在安装时的步骤主要是：
一、用香蕉水或丙酮等清洁剂将球头柱钉及球头柱钉需要安装的孔内的灰尘及油污清洗干净，随后将球头柱钉的裸露球头涂满柱钉胶。
二、将球头柱钉塞入磨辊和/或磨盘衬板内，用铜棒将球头柱钉锤紧或施加力将球头柱钉压实,直至球头柱钉上涂的胶溢出到磨辊、磨盘衬套的表面上为止。
三、当球头柱钉损坏时，清除球头柱钉周围的物料，将其加热到适当的温度，使柱钉胶失效，用大力钳拔出损坏的柱钉，重复上述柱钉安装过程即可。
本发明的实施例公布的是较佳的实施例，但并不局限于此，本领域的普通技术人员，极易根据上述实施例，领会本发明的精神，并做出不同的引申和变化，但只要不脱离本发明的精神，都在本发明的保护范围内。

Claims (12)

  1. 一种具有球头柱钉磨辊的立磨，包括磨盘(4)和磨辊(5)，磨辊(5)包括磨辊辊体(51)，其特征在于：
    所述磨辊辊体(51)，沿其外表面上插接有若干均匀排列的球头柱钉(6)，每一个球头柱钉(6)，插接在磨辊辊体(51)对应于其的插接孔(511)内。
  2. 根据权利要求1所述的一种具有球头柱钉磨辊的立磨，其特征在于：磨盘(4)顶部朝向磨盘外侧部分还通过一块压紧板(9)将动态风环(10)固定在磨盘(4)的外侧壁上，动态风环(10)与磨盘(4)一同转动，其中：
    所述动态风环(10)，具有连接衬套(101)以及动态叶片(102)；
    连接衬套(101)，套在磨盘外侧，具有顶部连接环(103)；
    动态叶片(102)，固定在连接衬套(101)的外侧。
  3. 根据权利要求2所述的一种具有球头柱钉磨辊的立磨，其特征在于：动态风环(10)的顶部连接环(103)使用若干个固紧螺钉(11)穿过一块压紧板(9)可拆卸地固定在磨盘(4)顶部。
  4. 根据权利要求1-3任意一项所述的一种具有球头柱钉磨辊的立磨，其特征在于：磨盘(4)朝向磨辊(5)的顶部位置设有磨盘衬套(7),磨盘衬套(7)内壁也设有若干均匀布置并且插入其内壁的球头柱钉(6)。
  5. 根据权利要求4所述的一种具有球头柱钉磨辊的立磨，其特征在于：磨盘衬套(7)顶部和底部分还分别固定有顶部磨盘衬套护板(8)和底部磨盘衬套护板(12)。
  6. 根据权利要求5所述的一种具有球头柱钉磨辊的立磨，其特征在于：顶部磨盘衬套护板(8)通过紧固螺钉(11)可拆卸地固定在动态风环(10)的顶部连接环(103)的顶部，底部磨盘衬套护板(12)也通过若干个紧固螺钉(11)可拆卸地固定在磨盘衬套(7)的底部。
  7. 根据权利要求1所述的一种具有球头柱钉磨辊的立磨，其特征在于：所述磨辊辊体(51)的顶部以及底部位置还分别设有一块磨辊护板(13)，所述磨辊护板(13)通过螺栓连接件(14)固定在磨辊辊体(51)上。
  8. 根据权利要求1所述的一种具有球头柱钉磨辊的立磨，其特征在于：每一个所述球头柱钉(6)包括裸露球头部(61)、插入部(62)和插入球头部(63)， 其中裸露球头(61)裸露在空气中，并且裸露球头部(61)的半径大于插入球头部(63)的半径。
  9. 根据权利要求1或8所述的一种具有球头柱钉磨辊的立磨，其特征在于：所述球头柱钉(6)由耐磨硬质合金钢制成。
  10. 根据权利要求8所述的一种具有球头柱钉磨辊的立磨，其特征在于：每一个所述球头柱钉(6)的插入球头部(63)的半径范围为10-20mm,裸露球头部(61)的半径范围为15-25mm。
  11. 球头柱钉磨辊，包括磨辊辊体(51)，其特征在于：所述磨辊辊体(51)沿其外表面上插接有若干均匀布置的球头柱钉(6)，每一个球头柱钉(6)插接在磨辊辊体(51)对应于其的插接孔(511)内，每一个所述球头柱钉(6)包括裸露球头部(61)、插入部(62)和插入球头部(63)，其中裸露球头(61)裸露在空气中，并且裸露球头部(61)的半径大于插入球头部(63)的半径。
  12. 球头柱钉磨盘，其特征在于：磨盘(4)朝向磨辊(5)的顶部位置设有磨盘衬套(7),磨盘衬套(7)内壁也设有若干均匀布置并且插入其内壁的球头柱钉(6)，每一个所述球头柱钉(6)包括裸露球头部(61)、插入部(62)和插入球头部(63)，其中裸露球头(61)裸露在空气中，并且裸露球头部(61)的半径大于插入球头部(63)的半径。
PCT/CN2020/080753 2020-03-23 2020-03-23 一种具有球头柱钉磨辊的立磨以及磨辊、磨盘 WO2021189218A1 (zh)

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