WO2000026541A1 - Pompe centrifuge formee par assemblage par soudure et par emboutissage et son procede de fabrication - Google Patents

Pompe centrifuge formee par assemblage par soudure et par emboutissage et son procede de fabrication Download PDF

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Publication number
WO2000026541A1
WO2000026541A1 PCT/CN1998/000261 CN9800261W WO0026541A1 WO 2000026541 A1 WO2000026541 A1 WO 2000026541A1 CN 9800261 W CN9800261 W CN 9800261W WO 0026541 A1 WO0026541 A1 WO 0026541A1
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WO
WIPO (PCT)
Prior art keywords
pump casing
pump
impeller
centrifugal pump
casing
Prior art date
Application number
PCT/CN1998/000261
Other languages
English (en)
French (fr)
Inventor
Fang Liang
Original Assignee
Yangjiang New Yuehua Stainless Steel Pump Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangjiang New Yuehua Stainless Steel Pump Co. Ltd. filed Critical Yangjiang New Yuehua Stainless Steel Pump Co. Ltd.
Priority to US09/582,689 priority Critical patent/US6409474B1/en
Priority to AU97339/98A priority patent/AU737740C/en
Priority to PT98951160T priority patent/PT1059455E/pt
Priority to CN98803227A priority patent/CN1131379C/zh
Priority to PCT/CN1998/000261 priority patent/WO2000026541A1/zh
Priority to DK98951160T priority patent/DK1059455T3/da
Priority to CA002316909A priority patent/CA2316909C/en
Priority to ES98951160T priority patent/ES2218859T3/es
Priority to EP98951160A priority patent/EP1059455B1/en
Priority to DE69823704T priority patent/DE69823704T2/de
Priority to AT98951160T priority patent/ATE266150T1/de
Publication of WO2000026541A1 publication Critical patent/WO2000026541A1/zh

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Classifications

    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal

Definitions

  • the present invention relates to a pump and a method for manufacturing the pump, and in particular, to a centrifugal pump formed by stamping and floating forming with a metal plate and a manufacturing method thereof.
  • BACKGROUND-An industrial pump is a general-purpose mechanical product with a large demand and a wide range of applications. It is widely used in various fields.
  • the general method of pump manufacturing is the casting method.
  • the casting method is a kind of high power consumption, many consumables, and high labor intensity.
  • Some existing stamping pumps have only impeller parts that are simply stamped with metal plates and projection welded, while the pump casing is still cast. The shortcomings of the original casting process cannot be completely overcome, the process is still difficult, and the technical performance is poor.
  • the designer of the present invention relies on many years of practical experience in various fields of research, development, production and processing of various stamping products, based on repeated research and demonstration, to make a new design composition, and finally the invention of this invention.
  • the object of the present invention is to provide a pump that is entirely manufactured by stamping and welding processes, which has the characteristics of high strength and high operating efficiency, and the pump casing has sufficient strength and rigidity to withstand the force of the pipeline. And withstand internal pressure centrifugal pump.
  • Another object of the present invention is to provide a process method in which all parts of the pump are formed by stamping and welding.
  • the object of the present invention can be achieved as follows: the pump casing, the impeller, the labyrinth ring bracket of the present invention,
  • the labyrinth ring, the back cover and the base are formed by stamping, which is characterized in that the manufacturing process of the pump casing is made of a wear-resistant metal material, the inside of which is gradually increased radially outward, and the cross section is approximately semi-circular.
  • Full-spiral openable and retractable die which uses flexible or elastic material that can be squeezed and flowed as the internal convex die.
  • the metal plate is punched into a flanged cylindrical part and set between the dies. The dies are closed and closed for flexibility.
  • the convex mold made of elastic material is expanded, and the original cylindrical member is expanded in the radial direction into a volute housing which is gradually enlarged and has a semi-circular shape near 360 °.
  • the flexible or elastic material of the internal convex mold is polyurethane rubber.
  • the punching pump of the present invention is composed of an inlet flange, an outlet flange, a back cover, a pump casing, and an impeller, and is characterized in that the pump casing has a pump casing and an impeller punched into a progressively outward radial direction along the direction of liquid flow.
  • the enlarged section is approximately semi-circular in shape, close to a 360 ° full-spiral vortex chamber, and has a generally oval-shaped outlet end hole.
  • the outlet curved neck communicates with the outlet end hole of the pump casing.
  • the object of the present invention can be further achieved by the following technical measures.
  • the axial outer surface of the pump casing connected to the inlet flange is a curved surface with a gradually changing curvature; the axial curvature change combined with the radial expansion height, the larger the radial expansion, the smaller the axial curvature, and such a curvature change makes the pump
  • the plate thickness of each part of the pump shell is more uniform, and it bears the pipeline pressure most evenly.
  • the pump shell shows the best strength and stiffness.
  • the elbow neck at the end hole of the pump casing is a variable-diameter elliptical weld on the pump casing, which is more in line with the requirements of the cross section of the fluid flow, reduces the resistance and noise, and improves the efficiency.
  • At least two evenly distributed ribs connect the pump casing and the inlet flange, so that the pipeline force is evenly distributed on the surface of the pump casing to strengthen the strength of the inlet flange.
  • the cross section of the ribs is U-shaped, with good rigidity. Save material.
  • the pump casing is provided with a labyrinth ring bracket.
  • the rib plate supporting the inlet flange and the labyrinth ring bracket are supported inside and outside the same place of the pump casing, so that the rib plate and the labyrinth ring bracket support each other and enhance the strength of the pump casing.
  • the impeller is composed of a front impeller plate, a rear impeller plate, and a helical blade sandwiched therebetween, which can effectively improve the strength of the impeller blade.
  • the labyrinth ring inside the labyrinth ring bracket is sealed between the impeller inlet and the pump casing inlet,
  • the sealing surface gap of the static seal is less than 0.5 mm, and the sealing effect is good.
  • the present invention has the following technical features:
  • centrifugal pump parts are formed by stamping, and the process is single.
  • the 0.5-5 mm metal plate material is used to make all the parts of the centrifugal pump.
  • the weight is equivalent to 1/4 of the similar casting pump.
  • the efficiency is 5-7% higher than similar pumps, the cost is equivalent to 2/3 of similar pumps, energy saving and material saving, high production efficiency, avoid environmental pollution, reduce labor intensity;
  • metal sheet can be used-stainless steel sheet, corrosion resistance, long life , Can transport high viscosity slurry, can be in -40. (_180. € for use in acids, strong bases and other corrosive media.
  • the design of the production process is ingenious.
  • the structural form of the impeller solves the problems that the specific speed Ns is less than 30, the exit width, and the 1-2 mm centrifugal pump cannot be solved by the casting process.
  • the thickness of the stamped pump casing is uniform, and the shape is uneven.
  • the asymmetric snail-shaped housing is more in line with the fluid flow requirements.
  • the dynamic and static seals between the impeller inlet and the pump housing inlet are sealed with a dense palace ring, and the sealing surface gap is less than 0.5 mm.
  • Elliptical diameter welded to the pump casing without scarring.
  • the strength and rigidity of the casing of the centrifugal pump are in the best state, which can withstand the greatest degree of pipeline force and internal pressure. It is widely suitable for small-flow high-pressure liquid pressure delivery places.
  • FIG. 1 is a schematic structural diagram of a centrifugal pump according to the present invention.
  • Figure 2 is a schematic diagram of the impeller structure of the centrifugal pump of the present invention.
  • Fig. 3 is a sectional view of an impeller of a centrifugal pump according to the present invention.
  • FIG. 4 is a schematic diagram of a mold structure of a pump casing manufacturing process of the centrifugal pump according to the present invention.
  • Fig. 5 is a drawing of a pump casing according to the present invention.
  • FIG. 6 is a connection diagram of an outlet curved neck of the present invention.
  • the pump casing 1, the impeller 2, the labyrinth ring bracket 10, the labyrinth ring 4, the back cover 5 and the base 11 of the present invention are formed by stamping.
  • the manufacturing process of the pump casing of the present invention is made of a wear-resistant metal material. It is gradually increasing radially outward, and the cross section is approximately semi-circular near 360 ° Full-spiral openable and retractable die 17, using flexible or elastic material that can be squeezed and flowed as the inner punch 18, and the flexible or elastic material of the inner punch 18 may be polyurethane rubber, and the thickness is 0.5. A 5 mm sheet metal material is punched into a flanged cylindrical part, which is placed between the molds.
  • the mold is closed and the convex mold made of flexible or elastic material is expanded.
  • the cylindrical part is expanded into a radial direction.
  • the volute is gradually enlarged and has a semi-circular cross section, which is close to a 360 ° full spiral type.
  • the radial section 52 of the pump casing 1 is gradually gradual from the beginning I to VI II in the radial direction.
  • the axial surface 51 at the suction end is a curved surface with gradually changing curvature, and the axial curvature Combining the change with the radial expansion height, the larger the radial expansion, the smaller the axial curvature, so that the change of the cross section of the impeller 1 is more uniform, and the thickness of the metal plate at the suction end is also more uniform, with better rigidity and higher strength.
  • the centrifugal pump of the present invention is composed of a pump casing 1, an impeller 2, a labyrinth ring bracket 10, a labyrinth ring 4, a back cover 5, a pump shaft 21, a base 11, an inlet flange 8, and an outlet flange 23, and the center of the pump body
  • a pump shaft 21 is arranged coaxially with the motor 1 3, and the pump casing 1 is provided with a flange connected to the motor.
  • the pump casing 1 has a pump casing 1 and an impeller 2 punched into a radial direction along the flow direction.
  • the cross section is roughly semi-circular, close to a 360 ° full spiral vortex chamber, and has an approximately elliptical end hole 22 (see Figure 5).
  • the outlet curved neck 3 and the pump casing The outlet end hole 22 communicates; the impeller is composed of a front impeller plate 15, a rear impeller plate 14, and a spiral blade 16 sandwiched therebetween, and convex contact welding is connected to form a narrow runner impeller (see Figs.
  • the inlet and the pump housing are sealed by a labyrinth ring 4 inside a labyrinth ring bracket 10, and a pump shaft 21 passing through the center of the back cover 5 is supported by a bearing 12, and a combination mechanical seal 6 and a water retaining ring 7 are provided.
  • the front end is inserted into the center of the pump casing and is fixedly connected to the impeller; the pump casing is fixed to the casing end cover of the coaxial motor with bolts , Stamping labyrinth ring support 10, the outlet bent neck 3, the base 11 with a convex surface in contact welded to the pump housing; end hole outlet bent neck 3 of variable diameter elliptic connected to the pump housing 22, labyrinth ring stent 1
  • the rib 9 is connected to the outer end of the connection between the pump casing 1 and the labyrinth ring bracket 10 and rib 9 to support the inner and outer sides of the pump casing at the same place to form mutual support; at least two ribs are evenly distributed. 9 is connected to the inlet flange 8.
  • the present invention provides a process that is feasible, the effect is obvious, the structure is reasonable, and the performance is Centrifugal pump with excellent stamping and welding.
  • the present invention is a novel, progressive, and equivalent change that does not deviate from the principles of the present invention.
  • the functional effects produced by the present invention do not exceed the spirit covered by the description and the drawings, they should all fall within the scope of the present invention.
  • the present invention provides a stamping and welding centrifugal pump instead of a casting pump, and solves the problem that it is difficult to cast a small flow narrow impeller.
  • a process method and a structure provided by the present invention make the centrifugal pump of the present invention have high strength and stiffness
  • the thickness of the pump casing is more uniform, and the force on the pipeline can be evenly distributed on the surface of the pump casing.
  • the pump casing and the impeller are punched into an asymmetric, uneven vortex chamber that gradually increases in cross section along the direction of the liquid flow, making it more It conforms to the design of fluid mechanics, and can withstand higher internal pressure and improve efficiency. It is especially suitable for the transportation of clear water and viscous fluid with large flow and high head.
  • the advantages of the invention are 3/4 lighter than the casting pump, and the efficiency is 5-7. %, A large amount of material saving and energy saving, reducing the cost by 4/3, and reducing environmental pollution.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

冲压焊接成型离心泵及其制造方法 技术领域
本发明涉及一种泵和泵的制造方法， 特别涉及一种用金属板冲压浮接 成型的离心泵及其制造方法。
背景技术 - 工业泵是一种需求量大面广的通用机械产品， 广泛应用于各个领域， 泵的制造通常方法是铸造法， 铸造法是一种耗电高， 耗材多， 劳动强度 大， 对环境有污染的工艺； 对于小流量、 高扬程泵的某些部件， 如出口 宽度窄、 流量小的叶轮， 则因工艺所限而无法铸造。 因此， 开始研制利 用金属板通过冲压成型和焊接连接的方法来制造叶轮， 成为冲压离心泵， 现有的一些冲压泵只有其叶轮部件采用金属板简单沖压， 凸焊成型， 而 泵壳仍然采用铸造成型， 原有铸造工艺的缺点仍无法根本克服， 仍具有 工艺困难， 技术性能差。
有鉴于此， 如何能使离心泵的的全部部件均能采用冲压焊接成型， 减少环境污染， 减轻工作强度， 增加泵体的强度和技术性能， 大幅度提 高泵的运行效率， 正是本发明研创动机所在。
本发明设计人凭借多年从事各类冲压产品研制生产加工等领域的实 际经验， 在反复研究论证的基础上， 做一全新设计构成， 终得本发明的 产生。
针对现有技术的不足， 本发明的目的是提供一种全部采用沖压和焊接 工艺制造的泵， 其具有强度高， 运行效率高的特点， 泵壳有足够的强度 和刚度来承受管路作用力和承受内部的压力离心泵。
本发明的另一目的是提供一种泵的全部部件均采用冲压焊接成型的工 艺方法。
本发明的公开
本发明的目的可以按下述实现： 本发明的泵壳、 叶轮、 迷宫环支架、 迷宫环、 后盖和底座通过沖压成型， 其特征在于泵壳的制造工艺为： 采 用耐磨金属材料制成其内部为径向向外逐渐增大的、 断面呈大致半园形 的接近 360。 全螺旋型的可开合凹模， 采用可挤压流动的柔性或弹性材 料做内部凸模， 将金属板冲压成一个带凸缘的筒形件设置在模具之间， 合闭模具， 使柔性或弹性材料制成的凸模受膨胀， 将原来的筒形件沿径 向方向胀成为一个逐渐增大、 断面呈大致半园形的接近 360° 全螺旋型 的蜗壳体。 上述内部凸模的柔性或弹性材料为聚氨脂橡胶。
本发明的冲压泵， 由入口法兰、 出口法兰、 后盖、 泵壳、 叶轮构成， 其特征在于泵壳有一个泵壳与叶轮之间冲压成一个沿液流方向、 径向向 外逐渐增大的， 断面呈大致半园形的， 接近 360° 全螺旋型涡室， 并且 有一个大致为椭园形的出口端孔， 出口弯颈与泵壳的出口端孔连通。
本发明的目的还可以通过以下技术措施来进一步实现。
泵壳在与入口法兰相连接的轴向外表面为一曲率逐渐变化的曲面； 轴 向曲率变化结合径向扩展高度， 径向扩展越大， 轴向曲率越小， 这样的 曲率变化使得泵壳在冲压时泵壳各部分的板材厚度更均勾， 承受管道压 力最平均， 同时泵壳对外呈现强度和刚度处于最佳状态。
泵壳的端孔处出口弯颈为变直径椭圓型焊接在泵壳上， 更符合流体流 动截面要求， 降低阻力和噪音， 提高效率。
至少两个以上均匀分布的筋板连接泵壳和入口法兰， 使管路作用力均 匀分布在泵壳表面上， 加强入口法兰的强度； 筋板的横断面为 U 型， 刚 度好， 可节省材料。
泵壳内设有迷宫环支架， 连接支撑入口法兰的筋板与迷宫环支架支撑 于泵壳的同一处的内外侧， 使筋板和迷宫环支架互相支撑并增强泵壳的 强度。
叶轮是由前叶轮板、 后叶轮板及其之间夹持螺线型叶片构成， 能有效 提高叶轮片的强度。
叶轮入口、 泵壳入口之间采用位于迷宫环支架内迷宫环密封， 使得动 静密封的密封面间隙少于 0. 5毫米， 密封效果好。
综上所述， 本发明具有下列技术特点：
1、 所有离心泵部件均采用冲压悍接形成， 工艺单一， 将 0. 5-5 毫米 的金属板材料制造成离心泵的全部部件， 较之铸造泵， 重量相当于同类 铸造泵的 1/4， 效率比同类泵高 5-7%， 造价相当于同类泵的 2/ 3， 节能 节材， 生产效率高， 避免环境污染， 减轻劳动强度； 金属板材可选用―不 锈钢板材， 耐腐蚀、 寿命长， 可输送高粘性浆体， 可在-40。( _180。€ 的 酸、 强碱及其他腐蚀性介质中使用。
2、 生产工艺设计巧妙， 叶轮的结构形式解决了比转速 Ns 低于 30， 出口宽度， 1-2 毫米的离心泵采用铸造工艺无法解决的难题； 冲压成型的 泵壳厚度均匀， 形状为不均匀、 不对称的蜗牛状的壳体， 更符合流体的 流畅需要， 叶轮入口、 泵壳入口之间的动静密封， 采用密宫环密封， 密 封面间隙少于 0. 5 毫米； 出口弯颈为变直径椭圆型焊接在泵壳上， 无疤 痕。
3、 离心泵壳体强度和刚度都实现最佳状态， 可以承受最大程度的管 路作用力和内部压力 , 广泛适用于小流量高扬程的液体加压输送场所。
对附图的简要说明。
图 1为本发明离心泵的构造示意图。
图 2为本发明离心泵的叶轮构造示意图。
图 3为本发明离心泵的叶轮剖面图。
图 4为本发明离心泵的泵壳制造工艺模具构造示意图。
图 5为本发明泵壳成型图。
图 6为本发明出口弯颈连接图。
实施本发明的聂佳技术方案。
本发明的泵壳 1、 叶轮 2、 迷宫环支架 10、 迷宫环 4、 后盖 5和底座 11 通过冲压成型， 参见图 4 , 本发明泵壳的制造工艺为采用耐磨金属材 料制成其内部为径向向外逐渐增大的、 断面呈大致半园形的接近 360° 全螺旋型的可开合凹模 17 , 采用可挤压流动的柔性或弹性材料做内部凸 模 18 ,内部凸模 18的柔性或弹性材料可选用聚氨脂橡胶,将厚度为 0. 5-5 毫米的金属板材料冲压成一个带凸缘的筒形件设置在模具之间， 合闭模 具， 使柔性或弹性材料制成的凸模受膨胀， 将筒形件沿径向方向胀成为 一个逐渐增大、 断面呈大致半园形的接近 360° 全螺旋型的蜗壳体。 参 见图 5 , 使泵壳 1径向断面 52在径向方向从一开始 I至 VI I I呈一渐.开 螺旋线型， 在吸入端轴向面 51为一曲率逐渐变化的曲面， 轴向曲率变化 结合径向扩展高度， 径向扩展越大， 轴向曲率越小， 从而使叶轮 1 过流 断面变化更均匀， 而且使吸入端金属板厚度变化也更均匀， 刚度更好， 强度更高。
参见图 1 , 本发明离心泵由泵壳 1、 叶轮 2、 迷宫环支架 10、 迷宫环 4、 后盖 5、 泵轴 21、 底座 11、 入口法兰 8、 出口法兰 23组成， 泵体中 心设置与电机 1 3同轴通长的泵轴 21， 泵壳 1上设有与电机联接的法兰； 泵壳 1有一个泵壳 1与叶轮 2之间沖压成一个沿液流方向、 径向向外逐 渐增大的， 断面呈大致半园形的， 接近 360° 全螺旋型涡室， 并且有一 个大致为椭园形的端孔 22 (参见图 5 ), 出口弯颈 3与泵壳的出口端孔 22 连通；叶轮是由前叶轮板 15、后叶轮板 14及其中间夹持的螺线型叶片 16 构成， 凸面接触焊连接成窄流道叶轮（参见图 2和图 3 ); 叶轮入口、 泵 壳入口之间采用位于迷宫环支架 10内迷宫环 4村环密封， 后盖 5中心通 过的泵轴 21 由轴承 12支撑， 并设有组合机械密封 6和挡水圈 7 , 泵轴 前端插入泵壳中心， 与叶轮固定连接； 泵壳用螺栓固定在同轴电机的机 壳端盖上， 冲压成型的迷宫环支架 1 0、 出口弯颈 3、 底座 1 1用凸面接触 焊接在泵壳上； 出口弯颈 3为变直径椭圆型连接于泵壳 1端孔 22上， 迷 宫环支架 1 0与泵壳 1连接处的外端连接有筋板 9， 使迷宫环支架 1 0与 筋板 9 支撑连接于泵壳同一处的内外侧而形成互相支撑； 至少均匀分布 二个以上的筋板 9与入口法兰 8连接。
综上所述， 本发明提供了一种工艺可行， 效果明显， 结构合理， 性能 优良的冲压焊接成型的离心泵。 显然本发明为一种新颖、 进步并具有实 在不偏离本发明的原理所作的等效改变， 其所产生的功能作用仍未超出 说明书及附图所涵盖的精神时， 均应在本发明的范围内， 特此说明。
工业应用性
本发明提供一种取代铸造泵的沖压焊接离心泵， 解决小流量窄叶轮难 于铸造的难题， 本发明提供的一种工艺方法和构造结构， 使本发明的离 心泵具有较高的强度和刚度， 泵壳厚度更加均匀， 能将管路上的作用力 均匀分布在泵壳表面 , 泵壳与叶轮之间沖压成一个沿液流方向断面逐渐 增大的、 不对称、 不均匀的涡室， 使得更符合流体力学设计， 而能承受 更高的内部压力和提高效率， 特別适合于大流量高扬程的清水及粘性流 体的输送； 本发明的优点较铸造泵重量轻 3/4 , 效率高 5-7%, 大量节材 和节能， 造价降 4氏 1/ 3， 减少环境污染。

Claims

权.利 要 求
1、 一种冲压焊接成型离心泵， 由入口法兰 （8)、 出口法兰（23)、 后 盖 （ 5 )、 泵壳 （ 1 )、 叶轮（ 2 )构成， 其特征在于泵壳 （ 1 )有一个泵壳
( 1 ) 与叶轮 (2)之间冲压成一个沿液流方向、 径向向外逐渐增大的， 断面呈大致半园形的， 接近 360° 全螺旋型涡室， 并且有一个大致为-椭 园形的出口端孔（22), 出口弯颈 （3) 与泵壳 （1 ) 的出口端孔（22 )连 通。
2、根据权利要求 1所述的冲压焊接成型离心泵， 其特征在于泵壳（ 1 ) 在与入口法兰 （8)相连接的轴向外表面为一曲率逐渐变化的曲面。
3、 根据权利要求 1或 2所述的冲压焊接成型离心泵， 其特征在于泵 壳 （1 )轴向外表面曲率变化结合径向扩展高度， 径向扩展越大， 轴向曲 率越小。
4、根据权利要求 1所述的冲压焊接成型离心泵， 其特征在于泵壳（ 1 ) 的出口弯颈 （3)为变直径椭圆型焊接在泵壳 （1 ) 的出口端孔（22)上。
5、根据权利要求 1所述的冲压焊接成型离心泵， 其特征在于泵壳（ 1 ) 内设有迷宫环支架（10)， 连接支撑入口法兰 （8 ) 的筋板（9)与迷宫环 支架（10) 支撑于泵壳的同一处的内外侧。
6、 根据权利要求 1或 5所述的冲压焊接成型离心泵， 其特征在于至 少两个以上均匀分布的筋板（9)连接泵壳 （1 ) 和入口法兰（8)。
7、根据权利要求 3所述的冲压焊接成型离心泵， 其特征在于叶轮（ 2 ) 是由前叶轮板 ( 15 )、 后叶轮板 ( 14 )及其之间夹持螺线型叶片 （ 16 )构 成。
8、根据权利要求 3所述的冲压焊接成型离心泵， 其特征在于叶轮 ( 2 ) 入口、 泵壳 （1 )入口之间设有密封用位于迷宫环支架（10) 内的迷宫环
(4)。
9、 一种冲压焊接成型离心泵的制造方法， 泵壳 （1)、 叶轮（2)、 迷 宫环支架（10)、 迷宫环 （4)、 后盖 （5 ) 和底座 （11 )通过冲压成型， 其特征在于泵壳 （1 ) 的制造工艺为： 采用耐磨金属材料制成其内部为径 向向外逐渐增大的、 断面呈大致半园形的接近 360° 全螺旋型的可开合 凹模（17 ), 采用可挤压流动的柔性或弹性材料做内部凸模（18 ), 将金 属板冲压成一个带凸缘的筒形件设置在模具之间， 合闭模具， 使柔性或 弹性材料制成的凸模（18 ) 受膨胀， 将筒形件沿径向方向胀成为一个逐 渐增大、 断面呈大致半园形的接近 360° 全螺旋型的蜗壳体（1)。
10、 根据权利要求 1所述的冲压焊接成型离心泵的制造方法， 其特征 在于内部凸模（19 )的柔性和弹性材料为聚氨脂橡胶。
PCT/CN1998/000261 1998-10-30 1998-10-30 Pompe centrifuge formee par assemblage par soudure et par emboutissage et son procede de fabrication WO2000026541A1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US09/582,689 US6409474B1 (en) 1998-10-30 1998-10-30 Centrifugal pump formed by pressing and welding and its manufacturing process
AU97339/98A AU737740C (en) 1998-10-30 1998-10-30 A centrifugal pump formed by pressing and welding and its manufacturing process
PT98951160T PT1059455E (pt) 1998-10-30 1998-10-30 Bomba centrifuga formada por prensagem e soldadura e seus processos de fabrico
CN98803227A CN1131379C (zh) 1998-10-30 1998-10-30 冲压焊接成型离心泵及其制造方法
PCT/CN1998/000261 WO2000026541A1 (fr) 1998-10-30 1998-10-30 Pompe centrifuge formee par assemblage par soudure et par emboutissage et son procede de fabrication
DK98951160T DK1059455T3 (da) 1998-10-30 1998-10-30 Centrifugalpumpe fremstillet ved svejsning og presning samt fremgangsmåde til fremstilling af denne
CA002316909A CA2316909C (en) 1998-10-30 1998-10-30 A centrifugal pump formed by pressing and welding and its manufacturing process
ES98951160T ES2218859T3 (es) 1998-10-30 1998-10-30 Una bomba centrifuga formada por prensado y soldadura y su procedimiento de fabricacion.
EP98951160A EP1059455B1 (en) 1998-10-30 1998-10-30 A centrifugal pump formed by pressing and welding and its manufacturing process
DE69823704T DE69823704T2 (de) 1998-10-30 1998-10-30 Durch schweissen und pressen hergestellte zentrifugalpumpe und deren herstellungsweise
AT98951160T ATE266150T1 (de) 1998-10-30 1998-10-30 Durch schweissen und pressen hergestellte zentrifugalpumpe und deren herstellungsweise

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Application Number Priority Date Filing Date Title
PCT/CN1998/000261 WO2000026541A1 (fr) 1998-10-30 1998-10-30 Pompe centrifuge formee par assemblage par soudure et par emboutissage et son procede de fabrication

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WO2000026541A1 true WO2000026541A1 (fr) 2000-05-11

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US (1) US6409474B1 (zh)
EP (1) EP1059455B1 (zh)
CN (1) CN1131379C (zh)
AT (1) ATE266150T1 (zh)
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CA (1) CA2316909C (zh)
DE (1) DE69823704T2 (zh)
DK (1) DK1059455T3 (zh)
ES (1) ES2218859T3 (zh)
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WO (1) WO2000026541A1 (zh)

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CN100404874C (zh) * 2006-01-21 2008-07-23 阳江市新力工业有限公司 一种冲压焊接食品泵
ES2349239B1 (es) * 2008-02-08 2011-10-19 Jose Lorengo Bugallo Una bomba centrifuga normalizada formada con piezas de fabricacion estandar (curvas o codos y bridas), soldadura y mecanizado y su procedimiento de fabricacion.
CN104128748A (zh) * 2014-07-08 2014-11-05 霍山县龙鑫金属制品有限公司 一种泵体压铸件焊接方法
CN108928013B (zh) * 2018-07-12 2023-12-01 台州市中冠模业有限公司 一种变截面螺旋壳体模具

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DE69823704T2 (de) 2005-05-25
EP1059455A4 (en) 2001-05-30
CA2316909C (en) 2004-02-10
DE69823704D1 (de) 2004-06-09
AU737740B2 (en) 2001-08-30
AU737740C (en) 2002-07-25
EP1059455B1 (en) 2004-05-06
CA2316909A1 (en) 2000-05-11
ES2218859T3 (es) 2004-11-16
DK1059455T3 (da) 2004-09-06
EP1059455A1 (en) 2000-12-13
PT1059455E (pt) 2004-09-30
ATE266150T1 (de) 2004-05-15

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