WO2017016078A1 - 一种耐腐蚀的主轴结构 - Google Patents

一种耐腐蚀的主轴结构 Download PDF

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Publication number
WO2017016078A1
WO2017016078A1 PCT/CN2015/092648 CN2015092648W WO2017016078A1 WO 2017016078 A1 WO2017016078 A1 WO 2017016078A1 CN 2015092648 W CN2015092648 W CN 2015092648W WO 2017016078 A1 WO2017016078 A1 WO 2017016078A1
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Prior art keywords
corrosion
spindle
section
resistant
main shaft
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PCT/CN2015/092648
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English (en)
French (fr)
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葛锋
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南通大通宝富风机有限公司
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Publication of WO2017016078A1 publication Critical patent/WO2017016078A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts

Definitions

  • the present invention relates to a centrifugal fan, and in particular to a corrosion resistant spindle structure.
  • the centrifugal fan is widely used in the ventilation of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air intake of boilers and industrial furnaces. Cooling and ventilation in air conditioning equipment and household appliances, drying and sorting of grains, all reflect the importance of centrifugal fans. It also focuses on the application of special-purpose fans, such as anti-corrosion fans, which are special in materials such as stainless steel fans, fiberglass fans, plastic fans, titanium fans and metal-lined fans.
  • the main shaft and the shaft plate are the key components of the centrifugal fan.
  • the anti-corrosion performance of the main shaft and the shaft plate directly affects the working performance of the entire fan system.
  • the spindle and the shaft are susceptible to corrosion. This will result in a short service life of the centrifugal fan shaft and the shaft in a specific working environment, and the anti-corrosion performance will not meet the requirements.
  • the special material of the main shaft is not only costly but also difficult to process, so a new spindle is needed. Structure instead.
  • the object of the present invention is to overcome the above problems existing in the prior art and to provide a corrosion-resistant spindle structure, which is convenient to manufacture and low in cost.
  • a corrosion-resistant main shaft structure includes a main shaft and an impeller, the main shaft includes an end portion, a cylindrical shaft portion and a tapered shaft portion, and the cylindrical shaft portion is provided with a sleeve outside, and the tapered shaft portion is peripherally provided a stainless steel sheet having a cross-sectional diameter smaller than a cross-sectional diameter of the cylindrical shaft section, the cylindrical shaft section having a cross-sectional diameter smaller than a cross-sectional diameter of the tapered shaft section, the impeller being vertically passed through a bolt Fixed in the middle of the tapered shaft segment of the main shaft.
  • the sleeve is of a two-stage step type.
  • the sleeve is welded to the cylindrical shaft section of the spindle by means of a full weld.
  • the stainless steel sheet is provided with a plug welding hole.
  • connection of the impeller to the spindle is filled with a liquid sealant.
  • the joint of the bushing with the stainless steel sheet is welded by a stainless steel welding rod.
  • the spindle is made of 35CrMo or 45 forgings.
  • the sleeve is a corrosion resistant material.
  • the invention has novel design and simple structure.
  • the prior art main shaft adopts stainless steel material and has high cost, and the invention selects 45 forging or 35CrMo forging, and only needs to protect stainless steel or corrosion-resistant material outside the main shaft in the medium gas, but It can achieve the same anti-corrosion effect, reduce production cost, and is easy to process.
  • Figure 1 is a schematic view of the overall structure
  • Figure 2 is an enlarged view of part I
  • Figure 3 is an enlarged view of a portion II.
  • the figures indicate: 1, spindle, 2, bushing, 3, stainless steel sheet, 4, impeller, 5, end, 6, cylindrical shaft section, 7, tapered shaft section.
  • a corrosion resistant spindle structure includes a main shaft 1 and an impeller 4, the main shaft 1 including an end portion 5, a cylindrical shaft portion 6 and a tapered shaft portion 7, the cylindrical shaft portion 6 outer casing a sleeve 2 is provided, which is provided with a stainless steel sheet 3, the end portion 5 having a cross-sectional diameter smaller than the cross-sectional diameter of the cylindrical shaft section 6, the cylindrical shaft section 6 The cross-sectional diameter is smaller than the cross-sectional diameter of the tapered shaft section 7.
  • the sleeve 2 is of a two-stage step type, and the sleeve 2 is welded to the outside of the cylindrical shaft section 6 of the spindle 1 by means of full welding, the cylindrical shaft section 6 It is completely sealed to ensure that it is not corroded by gas.
  • the bushing is made of corrosion-resistant stainless steel.
  • the tapered shaft section 7 of the main shaft 1 is provided with the stainless steel thin plate 3, and the stainless steel thin plate 3 is provided with a plug welding hole for welding, and the impeller 4 is vertically fixed by a bolt.
  • the welded portion with the main shaft 1 is welded by a stainless steel welding rod, and the liquid sealing glue is filled in the chamfered end of the bolt hole and the nut joint surface and the inner space.
  • the joint of the sleeve 2 and the stainless steel sheet 3 is welded by a stainless steel welding rod to ensure close joint between the respective protective sleeves, preventing gas from entering, causing corrosion of the spindle 1.
  • the material of the main shaft 1 is 35CrMo or 45 forging, and the sleeve 2 is a corrosion resistant material.
  • the end portion 5 of the main shaft 1 and a portion of the cylindrical shaft portion 6 are in the air, and the cylindrical shaft portion 6 and the tapered shaft portion 7 are in a corrosive gas, so the cylindrical shaft portion 6 and The tapered shaft section 7 is provided with a sleeve 2 and a stainless steel sheet 3 to prevent the main shaft 1 from being corroded by corrosive gas, and the sleeve 2 and the stainless steel sheet 3 are connected The joints are welded with stainless steel electrodes to prevent gas from entering.

Abstract

一种耐腐蚀的主轴结构，包括主轴（1）和叶轮（4），所述主轴（1）包括端部（5）、圆柱形轴段（6）和锥形轴段（7），所述圆柱形轴段（6）外套设有轴套（2），所述锥形轴段（7）外套设有不锈钢薄板（3），所述端部（1）的横截面直径小于所述圆柱形轴段（6）的横截面直径，所述圆柱形轴段（6）的横截面直径小于所述锥形轴段（7）的横截面直径，所述叶轮（4）通过螺栓垂直固定于主轴（1）的锥形轴段的中间。该结构在主轴外使用不锈钢或耐腐蚀材料保护，能达到防腐蚀效果，降低了生产成本，而且加工方便。

Description

一种耐腐蚀的主轴结构 技术领域
本发明涉及离心风机，具体涉及的是一种耐腐蚀的主轴结构。
背景技术
离心风机的主要结构部件是叶轮，机壳，主轴及轴盘，离心风机广泛用于工厂、矿井、隧道、冷却塔、车辆、船舶和建筑物的通风，锅炉和工业炉窑的通风和引风，空气调节设备和家用电器设备中的冷却和通风，谷物的烘干和选送，这些都体现了离心风机的重要性。还重点应用特殊用途的通风机，如防腐风机等，这类风机在材质上较为特殊，如不锈钢风机、玻璃钢风机、塑料风机、钛材风机以及金属衬胶风机。
主轴及轴盘作为离心风机的关键部件，主轴及轴盘防腐性能的好坏直接影响到整个风机系统的工作性能。在特定工作环境下，比如在酸、碱、水蒸气等介质环境中，主轴及轴盘容易被腐蚀。这就会导致在特定工作环境下，离心风机主轴和轴盘的使用寿命不长，防腐性能达不到要求，而将主轴采用特殊材质不仅成本高，而且加工困难，因此需要一种新的主轴结构代替。
发明内容
本发明的目的在于克服现有技术存在的以上问题，提供一种耐腐蚀的主轴结构，制作方便，成本低廉。
为实现上述技术目的，达到上述技术效果，本发明通过以下技术方案实现：
一种耐腐蚀的主轴结构，包括主轴和叶轮，所述主轴包括端部、圆柱形轴段和锥形轴段，所述圆柱形轴段外设有轴套，所述锥形轴段外围设有不锈钢薄板，所述端部的横截面直径小于所述圆柱形轴段的横截面直径，所述圆柱形轴段的横截面直径小于锥形轴段的横截面直径，所述叶轮通过螺栓垂直固定于所述主轴的锥形轴段的中间。
作为优化的，所述轴套为二级阶梯型。
作为优化的，所述轴套通过满焊的方式焊接在所述主轴的圆柱形轴段。
作为优化的，所述不锈钢薄板上设有塞焊孔。
作为优化的，所述叶轮与所述主轴的连接处通过液态密封胶填充。
作为优化的，所述轴套与所述不锈钢薄板的连接处通过不锈钢焊条焊接。
作为优化的，所述主轴的材质为35CrMo或45号锻件。
作为优化的，所述轴套为耐腐蚀材料。
本发明的有益效果是:
本发明设计新颖，结构简单，现有技术的主轴采用不锈钢材质，成本高，而本发明选用45号锻件或35CrMo锻件，只需在介质气体中，在主轴外使用不锈钢或耐腐蚀材料保护，但是能达到同样的防腐蚀效果，降低了生产成本，而且加工方便。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1整体结构示意图；
图2为Ⅰ部分的放大图；
图3为Ⅱ部分的放大图。
图中标号说明：1、主轴，2、轴套，3、不锈钢薄板，4、叶轮，5、端部，6、圆柱形轴段，7、锥形轴段。
具体实施方式
下面将参考附图并结合实施例，来详细说明本发明。
参照图1所示，一种耐腐蚀的主轴结构，包括主轴1和叶轮4，所述主轴1包括端部5、圆柱形轴段6和锥形轴段7，所述圆柱形轴段6外套设有轴套2，所述锥形轴段7外套设有不锈钢薄板3，所述端部5的横截面直径小于所述圆柱形轴段6的横截面直径，所述圆柱形轴段6的横截面直径小于所述锥形轴段7的横截面直径。
参照图2所示，所述轴套2为二级阶梯型，并且所述轴套2通过满焊的方式焊接在所述主轴1的圆柱形轴段6外，将所述圆柱形轴段6完全密封，保证不受气体的腐蚀，一般所述轴套选用耐腐蚀的不锈钢材质。
参照图3所示，所述主轴1的锥形轴段7外套设有所述不锈钢薄板3，所述不锈钢薄板3上设有塞焊孔，便于焊接，所述叶轮4通过螺栓垂直固定于所述主轴1的锥形轴段7的中间，与所述主轴1的焊接处通过不锈钢焊条焊接，所述螺栓孔两端倒角内和螺母结合面以及内部空隙内填充液态密封胶。
所述轴套2与所述不锈钢薄板3的连接处通过不锈钢焊条焊接，保证各个保护套之间的紧密接合，防止气体进入，造成所述主轴1的腐蚀。
所述主轴1的材质为35CrMo或45号锻件，所述轴套2为耐腐蚀材料。
所述主轴1的端部5和部分所述圆柱形轴段6处于空气内，部分所述圆柱形轴段6和所述锥形轴段7处于腐蚀性气体内，所以圆柱形轴段6和所述锥形轴段7外套设有轴套2和不锈钢薄板3，防止所述主轴1被腐蚀性气体腐蚀，而且所述轴套2和所述不锈钢薄板3的连 接处用不锈钢焊条焊接，防止气体进入。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

  1. 一种耐腐蚀的主轴结构，其特征在于：包括主轴(1)和叶轮(4)，所述主轴(1)包括端部(5)、圆柱形轴段(6)和锥形轴段(7)，所述圆柱形轴段(6)外套设有轴套(2)，所述锥形轴段(7)外套设有不锈钢薄板(3)，所述端部(1)的横截面直径小于所述圆柱形轴段(6)的横截面直径，所述圆柱形轴段(6)的横截面直径小于所述锥形轴段(7)的横截面直径，所述叶轮(4)通过螺栓垂直固定于所述主轴(1)的锥形轴段的中间。
  2. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述轴套(2)为二级阶梯型。
  3. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述轴套(2)通过满焊的方式焊接在所述主轴(1)的圆柱形轴段。
  4. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述不锈钢薄板(3)上设有塞焊孔。
  5. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述叶轮(4)与所述主轴(1)的连接处通过液态密封胶填充。
  6. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述轴套(2)与所述不锈钢薄板(3)的连接处通过不锈钢焊条焊接。
  7. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述主轴(1)的材质为35CrMo或45号锻件。
  8. 根据权利要求1所述的耐腐蚀的主轴结构，其特征在于：所述轴套(2)为耐腐蚀材料。
PCT/CN2015/092648 2015-07-30 2015-10-23 一种耐腐蚀的主轴结构 WO2017016078A1 (zh)

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CN104963884A (zh) * 2015-07-30 2015-10-07 南通大通宝富风机有限公司 一种耐腐蚀的主轴结构

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