WO2020237788A1 - 便于拆卸的闭式叶轮 - Google Patents

便于拆卸的闭式叶轮 Download PDF

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Publication number
WO2020237788A1
WO2020237788A1 PCT/CN2019/095729 CN2019095729W WO2020237788A1 WO 2020237788 A1 WO2020237788 A1 WO 2020237788A1 CN 2019095729 W CN2019095729 W CN 2019095729W WO 2020237788 A1 WO2020237788 A1 WO 2020237788A1
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WIPO (PCT)
Prior art keywords
impeller
blade
blades
cover plate
lower cover
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PCT/CN2019/095729
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English (en)
French (fr)
Inventor
张腾龙
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苏州赫尔拜斯泵业有限公司
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Publication of WO2020237788A1 publication Critical patent/WO2020237788A1/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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • 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
    • F04D29/22—Rotors specially for centrifugal pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the utility model belongs to the technical field of water pumps, and particularly relates to a closed impeller that is easy to disassemble.
  • a water pump is a machine that conveys or pressurizes fluid. It transfers mechanical energy or other external energy to the liquid to increase the energy of the liquid.
  • the impeller as the core component of the water pump, forms negative pressure in the pump chamber through the high-speed rotation of the impeller. Under the action of atmospheric pressure, water is pressed into the pump chamber and thrown out under the action of the centrifugal force of the impeller.
  • the existing water pump impeller is made of metal or plastic, but when the water pump is working, the impeller will rub against the fluid when it rotates at high speed. If this happens, the blade of the impeller will be damaged. If the blade is damaged, the working efficiency of the impeller will be seriously affected.
  • the existing impeller is an integrated impeller, and the maintenance and replacement of the blade is very inconvenient, and the maintenance cost is relatively high.
  • the main technical problem that the utility model solves is to provide a closed impeller that is easy to disassemble, which facilitates disassembly and replacement of blades, reduces maintenance costs, facilitates liquid suction, and improves the working efficiency of the impeller.
  • a technical solution adopted by the present utility model is: a closed impeller that is easy to disassemble, including an upper cover plate, a lower cover plate, a shaft sleeve and blades, the upper cover plate and the lower cover plate The blades and the shaft sleeve are arranged between them.
  • the shaft sleeve is located in the center of the impeller. A number of the blades are evenly distributed along the circumferential direction of the impeller, and the blades are detachably connected to the A lower cover, the upper cover is detachably connected to a plurality of the blades;
  • a liquid inlet is provided in the center of the upper cover plate, a liquid flow channel is formed between adjacent blades, and a liquid outlet is provided on the outer periphery of the impeller and located between adjacent blades.
  • the liquid inlet Communicate with the liquid flow channel, and the liquid flow channel communicates with the liquid outlet;
  • the upper surface of the lower cover plate is recessed downward to form a plurality of installation grooves, the opposite side walls of the installation groove are provided with limit bars, the blades are provided with convex bars, and both sides of the convex bars are provided with guide bars ,
  • the side wall of the mounting groove is provided with a relief portion that matches the guide bar, and the guide bar is clamped between the limit bar and the bottom surface of the mounting groove so that the blade is installed in the Describe the lower cover;
  • the blade includes two oppositely arranged flow guide surfaces, and the guide surface gradually slopes from the outer circumference of the impeller toward the center of the impeller toward the direction in which the impeller rotates.
  • the blade is provided with a screw hole
  • the upper cover plate is provided with a through hole
  • a bolt passes through the through hole and is connected with the screw hole to fix the upper cover plate to the blade.
  • the guide surface is provided with at least one guide groove, and the guide groove gradually slopes upward from the outer circumference of the impeller toward the center of the impeller.
  • the lower cover plate is provided with at least two balance holes, the number of the balance holes is an even number, and the balance holes penetrate the upper and lower surfaces of the lower cover plate, and the plurality of balance holes are
  • the shaft sleeve is arranged symmetrically.
  • the number of the blades is 5-7.
  • the impeller is a cast iron impeller.
  • the blade, the convex strip and the guide strip are integrally formed pieces.
  • the lower cover plate and the shaft sleeve are integrally formed.
  • the upper surface of the lower cover of the utility model is recessed downward to form an installation groove.
  • the opposite side walls of the installation groove are provided with limit bars, the blades are provided with protruding strips, and both sides of the protruding strips are provided with guide strips.
  • the blade of the utility model is provided with screw holes, the upper cover plate is provided with a through hole, and the bolt passes through the through hole and is connected with the screw hole to fix the upper cover plate on the blade, and at the same time, the blade is positioned to improve its working stability;
  • the two oppositely arranged flow guide surfaces of the blade of the utility model gradually incline from the outer circumference of the impeller to the center of the impeller to the direction in which the impeller rotates, so that the liquid flows more smoothly from the liquid inlet to the liquid outlet.
  • the diversion surface is provided with at least one diversion groove to divert the liquid, and the exit angle of the blade is 20-30°. The reasonable setting of the exit angle improves the working efficiency of the impeller;
  • the lower cover of the utility model is provided with at least two balance holes, the number of balance holes is an even number, and the balance holes penetrate the upper and lower surfaces of the lower cover, thereby reducing the pressure difference between the upper and lower sides of the impeller and making the impeller run smoothly.
  • Figure 1 is a schematic diagram of the structure of the utility model
  • Figure 2 is a cross-sectional view of the lower cover of the utility model
  • FIG. 3 is a schematic diagram of the structure of the blade of the present invention.
  • Embodiment a closed impeller that is easy to disassemble, as shown in Figures 1 to 3, the utility model includes an upper cover 1, a lower cover 2, a shaft sleeve 3 and a blade 4, the upper cover 1 and the The blade 4 and the shaft sleeve 3 are arranged between the lower cover plate 2.
  • the shaft sleeve 3 is located in the center of the impeller, and a plurality of the blades 4 are evenly distributed along the circumferential direction of the impeller, and
  • the blade 4 is detachably connected to the lower cover plate 2, and the upper cover plate 1 is detachably connected to a plurality of the blades 4;
  • the center of the upper cover plate 1 is provided with a liquid inlet 11, a liquid flow channel is formed between adjacent blades 4, and a liquid outlet 5 is provided on the outer circumference of the impeller and located between adjacent blades 4,
  • the liquid inlet 11 communicates with the liquid flow channel, and the liquid flow channel communicates with the liquid outlet 5;
  • the upper surface of the lower cover plate 2 is recessed downward to form a plurality of installation grooves 21, two opposite side walls of the installation groove 21 are provided with limit bars 22, the blade 4 is provided with convex bars 41, and the convex bars 41 Guide strips 42 are provided on both sides of the mounting groove 21, and the side walls of the mounting groove 21 are provided with a relief portion 23 that matches the guide strip 42.
  • the guide strip 42 is locked into the limit strip 22 and the mounting Between the bottom surfaces of the grooves so that the blade 4 is installed on the lower cover 2;
  • the blade 4 includes two oppositely arranged flow guide surfaces, and the flow guide surfaces gradually incline from the outer circumference of the impeller toward the center of the impeller toward the direction in which the impeller rotates.
  • the blade 4 is provided with a screw hole 44
  • the upper cover plate 1 is provided with a through hole
  • a bolt 6 passes through the through hole and is connected to the screw hole 44 so that the upper cover plate 1 is fixed to the blade 4 .
  • the guide surface is provided with at least one guide groove 43, and the guide groove 43 gradually slopes upward from the outer circumference of the impeller toward the center of the impeller.
  • the lower cover plate 2 is provided with at least two balance holes 24, the number of the balance holes 24 is an even number, and the balance holes 24 penetrate the upper and lower surfaces of the lower cover plate 2, and a number of the balance holes 24 is symmetrically arranged with the shaft sleeve 3 as the center.
  • the number of the blades 4 is 5-7.
  • the impeller is a cast iron impeller.
  • the blade 4, the convex strip 41 and the guide strip 42 are integrally formed.
  • the lower cover plate 2 and the shaft sleeve 3 are integrally formed parts.
  • the working principle of the utility model is as follows.
  • the blades, the upper cover plate and the lower cover plate of the utility model rotate under the drive of the shaft sleeve, and the liquid enters from the liquid inlet. Under the guidance of the blades, the liquid flows more smoothly. Improve the working efficiency of the impeller, and finally the liquid flows out from the liquid outlet;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种便于拆卸的闭式叶轮，包括上盖板（1）、下盖板（2）、轴套（3）和叶片（4），上盖板（1）和下盖板（2）之间设有叶片（4）和轴套（3），轴套（3）位于叶轮的中心，若干片叶片（4）沿着叶轮的周向均匀分布，且叶片（4）可拆卸连接于下盖板（2），上盖板（1）可拆卸连接于若干片叶片（4）；上盖板（1）的中心设有进液口（11），相邻叶片（4）之间形成液体流道，叶轮的外周且位于相邻叶片（4）之间设有出液口（5），进液口（11）和液体流道相通，液体流道与出液口（5）相通。

Description

便于拆卸的闭式叶轮 技术领域
本实用新型属于水泵技术领域，特别是涉及一种便于拆卸的闭式叶轮。
背景技术
水泵是输送流体或使流体增压的机械，它将机械能或其他外部能量输送给液体，使液体能量增加。叶轮作为水泵的核心部件，通过叶轮的高速转动而在泵室内形成负压，在大气压的作用下，水被压入泵室，并在叶轮的离心力的作用下而把水甩出。
现有的水泵叶轮由金属或塑料制成，但是在水泵工作时，叶轮在高速旋转时会和流体产生摩擦，长此以往，导致叶轮的叶片损坏，如果叶片损坏，则严重影响叶轮的工作效率，严重时需要将叶轮进行更换，现有的叶轮为一体式叶轮，叶片的维修更换很不方便，而且维修成本较高。
实用新型内容
本实用新型主要解决的技术问题是提供一种便于拆卸的闭式叶轮，便于对叶片进行拆卸更换，较少维修成本，利于液体的吸入，提高了叶轮的工作效率。
为解决上述技术问题，本实用新型采用的一个技术方案是：一种便于拆卸的闭式叶轮，包括上盖板、下盖板、轴套和叶片，所述上盖板和所述下盖板之间设有所述叶片和所述轴套，所述轴套位于所述叶轮的中心，若干片所述叶片沿着所述叶轮的周向均匀分布，且所述叶片可拆卸连接于所述下盖板，所述上盖板可拆卸连接于若干片所述叶片；
所述上盖板的中心设有进液口，相邻所述叶片之间形成液体流道，所述叶轮的外周且位于相邻所述叶片之间设有出液口，所述进液口和所述液体流道相通，所述液体流道与所述出液口相通；
所述下盖板的上表面向下凹陷形成若干条安装槽，所述安装槽的相对两侧壁设有限位条，所述叶片设有凸条，所述凸条的两侧设有导向条，所述安 装槽的侧壁设有与所述导向条相匹配的让位部，所述导向条卡入所述限位条和所述安装槽的底面之间以使所述叶片安装于所述下盖板；
所述叶片包括相对设置的两个导流面，所述导流面由所述叶轮的外周向叶轮的中心逐渐向所述叶轮转动的方向倾斜。
进一步地说，所述叶片设有螺孔，所述上盖板设有通孔，螺栓穿过所述通孔与所述螺孔连接以使所述上盖板固定于所述叶片。
进一步地说，所述导流面设有至少一条导流槽，所述导流槽由叶轮的外周向叶轮的中心逐渐向上倾斜。
进一步地说，所述下盖板设有至少两个平衡孔，所述平衡孔的数量为偶数，且所述平衡孔贯穿所述下盖板的上、下表面，若干个所述平衡孔以所述轴套为中心对称设置。
进一步地说，每片所述叶片的导流面且位于所述出液口处位置的切线与叶片在该处的径向射线的夹角为叶片出射角，所述叶片出射角为20-30°。
进一步地说，所述叶片的数量为5-7片。
进一步地说，所述叶轮为铸铁叶轮。
进一步地说，所述叶片、所述凸条和所述导向条为一体成型件。
进一步地说，所述下盖板和所述轴套为一体成型件。
本实用新型的有益效果至少具有以下几点：
本实用新型的下盖板的上表面向下凹陷形成安装槽，安装槽的相对两侧壁设有限位条，叶片设有凸条，凸条的两侧设有导向条，导向条卡入限位条和安装槽的底面之间以使叶片安装于下盖板，当叶片损坏时，便于对其进行更换，较少维修成本；
本实用新型的叶片设有螺孔，上盖板设有通孔，螺栓穿过通孔与螺孔连接以使上盖板固定于叶片，同时对叶片进行定位，提高其工作时的稳定性；
本实用新型的叶片的相对设置的两个导流面，导流面由叶轮的外周向叶轮的中心逐渐向叶轮转动的方向倾斜，使液体从进液口流向出液口时更为流畅，更佳的是，导流面设有至少一条导流槽，对液体进行导流，且叶片出射角为20-30°，合理的出射角的设置，提高了叶轮的工作效率；
本实用新型的下盖板设有至少两个平衡孔，平衡孔的数量为偶数，且平衡孔贯穿下盖板的上、下表面，从而减少叶轮上下两侧的压差，使叶轮运行平稳。
附图说明
图1是本实用新型的结构示意图；
图2是本实用新型的下盖板的剖视图；
图3是本实用新型的叶片的结构示意图；
附图中各部分标记如下：
上盖板1、进液口11、下盖板2、安装槽21、限位条22、让位部23、平衡孔24、轴套3、叶片4、凸条41、导向条42、导流槽43、螺孔44、出液口5和螺栓6。
具体实施方式
下面结合附图对本实用新型的较佳实施例进行详细阐述，以使本实用新型的优点和特征能更易于被本领域技术人员理解，从而对本实用新型的保护范围做出更为清楚明确的界定。
实施例：一种便于拆卸的闭式叶轮，如图1-图3所示，本实用新型包括上盖板1、下盖板2、轴套3和叶片4，所述上盖板1和所述下盖板2之间设有所述叶片4和所述轴套3，所述轴套3位于所述叶轮的中心，若干片所述叶片4沿着所述叶轮的周向均匀分布，且所述叶片4可拆卸连接于所述下盖板2，所述上盖板1可拆卸连接于若干片所述叶片4；
所述上盖板1的中心设有进液口11，相邻所述叶片4之间形成液体流道，所述叶轮的外周且位于相邻所述叶片4之间设有出液口5，所述进液口11和所述液体流道相通，所述液体流道与所述出液口5相通；
所述下盖板2的上表面向下凹陷形成若干条安装槽21，所述安装槽21的相对两侧壁设有限位条22，所述叶片4设有凸条41，所述凸条41的两侧设有导向条42，所述安装槽21的侧壁设有与所述导向条42相匹配的让位部23，所述导向条42卡入所述限位条22和所述安装槽的底面之间以使所述叶片4 安装于所述下盖板2；
所述叶片4包括相对设置的两个导流面，所述导流面由所述叶轮的外周向叶轮的中心逐渐向所述叶轮转动的方向倾斜。
所述叶片4设有螺孔44，所述上盖板1设有通孔，螺栓6穿过所述通孔与所述螺孔44连接以使所述上盖板1固定于所述叶片4。
所述导流面设有至少一条导流槽43，所述导流槽43由叶轮的外周向叶轮的中心逐渐向上倾斜。
所述下盖板2设有至少两个平衡孔24，所述平衡孔24的数量为偶数，且所述平衡孔24贯穿所述下盖板2的上、下表面，若干个所述平衡孔24以所述轴套3为中心对称设置。
每片所述叶片4的导流面且位于所述出液口5处位置的切线与叶片4在该处的径向射线的夹角为叶片出射角，所述叶片出射角为20-30°。
所述叶片4的数量为5-7片。
所述叶轮为铸铁叶轮。
所述叶片4、所述凸条41和所述导向条42为一体成型件。
所述下盖板2和所述轴套3为一体成型件。
本实用新型的工作原理如下，本实用新型的叶片、上盖板和下盖板在轴套的带动下转动，液体从进液口进入，在叶片的导流下，使液体流动更为流畅，提高叶轮的工作效率，最后液体从出液口流出；
当需要更换叶片时，将螺栓拧下，拆下损坏的叶片，将新的叶片的导向条从让位部插入，再使叶片卡入限位条和安装槽的底面之间，从而对叶片进行更换，保证叶轮的工作效率，较少叶轮的维修成本。
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (9)

  1. 一种便于拆卸的闭式叶轮，其特征在于：包括上盖板(1)、下盖板(2)、轴套(3)和叶片(4)，所述上盖板和所述下盖板之间设有所述叶片和所述轴套，所述轴套位于所述叶轮的中心，若干片所述叶片沿着所述叶轮的周向均匀分布，且所述叶片可拆卸连接于所述下盖板，所述上盖板可拆卸连接于若干片所述叶片；
    所述上盖板的中心设有进液口(11)，相邻所述叶片之间形成液体流道，所述叶轮的外周且位于相邻所述叶片之间设有出液口(5)，所述进液口和所述液体流道相通，所述液体流道与所述出液口相通；
    所述下盖板的上表面向下凹陷形成若干条安装槽(21)，所述安装槽的相对两侧壁设有限位条(22)，所述叶片设有凸条(41)，所述凸条的两侧设有导向条(42)，所述安装槽的侧壁设有与所述导向条相匹配的让位部(23)，所述导向条卡入所述限位条和所述安装槽的底面之间以使所述叶片安装于所述下盖板；
    所述叶片包括相对设置的两个导流面，所述导流面由所述叶轮的外周向叶轮的中心逐渐向所述叶轮转动的方向倾斜。
  2. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述叶片设有螺孔(44)，所述上盖板设有通孔，螺栓(6)穿过所述通孔与所述螺孔连接以使所述上盖板固定于所述叶片。
  3. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述导流面设有至少一条导流槽(43)，所述导流槽由叶轮的外周向叶轮的中心逐渐向上倾斜。
  4. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述下盖板设有至少两个平衡孔(24)，所述平衡孔的数量为偶数，且所述平衡孔贯穿所述下盖板的上、下表面，若干个所述平衡孔以所述轴套为中心对称设置。
  5. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：每片所述叶片的导流面且位于所述出液口处位置的切线与叶片在该处的径向射线的夹角为叶片出射角，所述叶片出射角为20-30°。
  6. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述叶片 的数量为5-7片。
  7. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述闭式叶轮为铸铁叶轮。
  8. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述叶片、所述凸条和所述导向条为一体成型件。
  9. 根据权利要求1所述的便于拆卸的闭式叶轮，其特征在于：所述下盖板和所述轴套为一体成型件。
PCT/CN2019/095729 2019-05-24 2019-07-12 便于拆卸的闭式叶轮 WO2020237788A1 (zh)

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CN112727801A (zh) * 2020-12-25 2021-04-30 福安市建达流体科技有限公司 一种高强度便于更换的水泵叶轮
CN113482727A (zh) * 2021-07-27 2021-10-08 溧阳市东风柴油机配件厂有限公司 一种可调节可拆卸式叶轮总成结构
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