WO2020244024A1 - 组合式离心叶轮 - Google Patents

组合式离心叶轮 Download PDF

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Publication number
WO2020244024A1
WO2020244024A1 PCT/CN2019/095587 CN2019095587W WO2020244024A1 WO 2020244024 A1 WO2020244024 A1 WO 2020244024A1 CN 2019095587 W CN2019095587 W CN 2019095587W WO 2020244024 A1 WO2020244024 A1 WO 2020244024A1
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WIPO (PCT)
Prior art keywords
impeller
blades
cover plate
blade
sleeve
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PCT/CN2019/095587
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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 WO2020244024A1 publication Critical patent/WO2020244024A1/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
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • 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
    • F04D29/247—Vanes elastic or self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking

Definitions

  • the utility model belongs to the technical field of water pumps, in particular to an impeller of a water pump.
  • Impeller pumps use the working impeller to drive the liquid to rotate at a high speed and transfer mechanical energy to the liquid to achieve the purpose of conveying the liquid.
  • Impeller pumps include vortex and centrifugal types. Among them, centrifugal pumps use the impeller to rotate to make water produce centrifugal movement.
  • the pump casing and suction pipe must be filled with water, and then the motor is started, so that the pump shaft drives the impeller and water to make high-speed rotation.
  • the water generates centrifugal movement and is thrown to the outer edge of the impeller.
  • the flow channel of the casing flows into the pressurized water pipeline of the water pump, and the head of the centrifugal pump is also related to the exit angle of the impeller blades.
  • the exit angle of the impeller in the prior art is fixed, and if the impeller needs to be replaced, the entire impeller must be replaced. Very high.
  • the main technical problem solved by the utility model is to provide a combined centrifugal impeller.
  • the blades of the impeller can be detachably installed on the impeller shaft sleeve through the plug-in part. When replacing, the blades can be replaced separately according to the demand, which reduces the cost.
  • the impeller cover has several Limiting grooves, the protruding ends of the blades can be placed in different limiting grooves according to requirements, so that the exit angle of the impeller blades can be changed, and the lift of the centrifugal pump can be adjusted.
  • a combined centrifugal impeller includes an impeller shaft sleeve, a plurality of blades and at least one cover plate.
  • the impeller shaft sleeve is sleeved on the pump shaft.
  • the blades are installed on the outer periphery of the impeller shaft sleeve.
  • the outer circumference of the impeller sleeve is uniformly distributed, and the cover plate is fixedly connected to one end of the impeller sleeve and covers the blades;
  • One end of the blade is provided with a plug-in part, the cross-section of the plug-in part is triangular, the side wall of the impeller shaft sleeve has a slot for the plug-in part to be inserted, and the cover plate faces the blade
  • One side has several strip-shaped limiting slots, the other end of the blade is placed in the limiting slot, and the other end of the blade is inserted into a different limiting slot to change the ejection of the blade Angle of angle.
  • the number of the limiting grooves is 2 or 3 times the number of the blades.
  • each cover plate there are 12 blades, and 24 limiting slots on each cover plate.
  • cover plate is fixedly installed on the impeller sleeve by screws.
  • the blades are aluminum blades or stainless steel blades.
  • the cross section of the plug-in part is an isosceles triangle, and the angle of the apex angle of the isosceles triangle is 15°-30°.
  • the cover plate is provided with a boss on the side facing the blade, the boss is located on the edge of the cover plate and is arranged along the entire circle of the cover plate, and the limit groove is provided on the boss. station.
  • boss and the cover are an integral structure or a separate installation structure.
  • the blades are detachably installed on the impeller shaft sleeve through the plug-in part, and the blades can be replaced separately according to the requirements during replacement, which reduces the cost.
  • the cover plate of the impeller has several limit grooves, and the extension ends of the blades can be changed according to requirements. Placed in different limit slots, so that the exit angle of the impeller blades can be changed, so that the head of the centrifugal pump can be adjusted;
  • the blade of the utility model has an isosceles triangle in the cross section of the inserting part, and the angle of the apex of the isosceles triangle is 15°-30°.
  • the triangular structure enables the blade to be locked with the impeller sleeve under the action of centrifugal force.
  • the combination becomes tighter and tighter, improving the precision of the impeller combination and improving the service life of the impeller.
  • Figure 1 is a schematic diagram of the overall structure of the impeller of the present invention.
  • Figure 2 is an exploded schematic diagram of the impeller of the present invention
  • Figure 3 is a view of part A of Figure 2;
  • Figure 4 is a view of part B of Figure 2;
  • Figure 5 is a schematic diagram of the blade installation of the utility model
  • Figure 6 is a schematic diagram of the blade installation of the utility model (installation by adjusting the exit angle);
  • Embodiment A combined centrifugal impeller, as shown in Figures 1 to 6: comprising an impeller sleeve 1, a plurality of blades 2 and at least one cover 3, the impeller sleeve is sleeved on the pump shaft, and the blades are mounted on The outer circumference of the impeller sleeve, and all the blades are evenly distributed along the outer circumference of the impeller sleeve, and the cover plate is fixedly connected to one end of the impeller sleeve and covers the blades;
  • One end of the blade is provided with a plug-in portion 21, the cross-section of the plug-in portion is triangular, the side wall of the impeller sleeve has a slot 11 for the plug-in portion to be inserted, and the cover plate faces the One side of the blade has a number of strip-shaped limiting grooves 31, and the other end of the blade is placed in the limiting groove;
  • the number of the limiting slots is 2 or 3 times the number of the blades.
  • the cover plate is fixedly installed on the impeller shaft sleeve by screws.
  • the blades are aluminum blades or stainless steel blades.
  • the cross section of the plug-in part is an isosceles triangle, and the angle of the apex angle of the isosceles triangle is 15°-30°.
  • the side of the cover plate facing the blade is provided with a boss 32, the boss is located at the edge of the cover plate and is arranged along the entire circle of the cover plate, and the limiting groove is provided in the boss.
  • the boss and the cover are an integral structure or a separate installation structure.
  • the boss and the cover are an integral structure.
  • the blades of the impeller can be detachably installed on the impeller shaft sleeve through the plug-in part. When replacing, the blades can be replaced separately according to the needs to reduce costs.
  • the cover plate of the impeller has several limit grooves, and the extension ends of the blades can be placed in different limits according to requirements. Position grooves, which can change the exit angle of the impeller blades, so as to adjust the head of the centrifugal pump;
  • the cross section of the inserting part of the blade is an isosceles triangle, and the angle of the apex of the isosceles triangle is 15°-30°.
  • the triangular structure enables the blade to engage with the impeller sleeve more and more under the action of centrifugal force. Tightening, improve the precision of the combination of the impeller, and increase the service life of the impeller.

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

Abstract

一种组合式离心叶轮，包括叶轮轴套（1）、若干叶片（2）和至少一个盖板（3），叶轮轴套（1）套接于泵轴，叶片（2）安装于叶轮轴套（1）的外周，且所有叶片（2）沿叶轮轴套（1）的外周均布，盖板（3）固定连接于叶轮轴套（1）的一端并覆盖叶片（2）；叶片（2）的一端设有插接部（21），插接部（21）的截面为三角形，叶轮轴套（1）的侧壁具有供插接部（21）***的插槽（11），盖板（3）朝向叶片（2）的一侧具有若干条形的限位槽（31），叶片（2）的另一端置于限位槽（31）内。

Description

组合式离心叶轮 技术领域
本实用新型属于水泵技术领域，特别是涉及一种水泵的叶轮。
背景技术
叶轮式泵是通过工作叶轮带动液体高速转动，把机械能传递给液体，从而达到输送液体的目的，叶轮式泵包括旋涡式和离心式等，其中，离心泵是利用叶轮旋转而使水发生离心运动来工作的，离心泵在启动前，必须使泵壳和吸水管内充满水，然后启动电机，使泵轴带动叶轮和水做高速旋转运动，水发生离心运动，被甩向叶轮外缘，经泵壳的流道流入水泵的压水管路，而离心泵的扬程也跟叶轮的叶片出射角度有关，现有技术中的叶轮的出射角度都是固定的，而且若是需要更换叶轮必须得整个更换，成本很高。
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组合式离心叶轮，叶轮的叶片通过插接部可拆卸安装于叶轮轴套，更换时可根据需求单独更换叶片，降低成本，叶轮的盖板具有若干限位槽，叶片的伸出端可根据需求置于不同的限位槽，从而能够改变叶轮叶片的出射角度，从而能够调节离心泵的扬程。
为解决上述技术问题，本实用新型的采用的一个技术方案如下：
一种组合式离心叶轮，包括叶轮轴套、若干叶片和至少一个盖板，所述叶轮轴套套接于泵轴，所述叶片安装于所述叶轮轴套的外周，且所有所述叶片沿所述叶轮轴套的外周均布，所述盖板固定连接于所述叶轮轴套的一端并覆盖所述叶片；
所述叶片的一端设有插接部，所述插接部的截面为三角形，所述叶轮轴套的侧壁具有供所述插接部***的插槽，所述盖板朝向所述叶片的一侧具有若干条形的限位槽，所述叶片的另一端置于所述限位槽内，通过将所述叶片的另一端***不同的所述限位槽，从而改变所述叶片的出射角的角度。
进一步地说，所述限位槽的数量为所述叶片数量的2倍或3倍。
进一步地说，所述盖板设有2个，2个所述盖板分别固定连接于所述叶轮轴套的两端。
进一步地说，所述叶片设有12个，每个所述盖板上的所述限位槽设有24个。
进一步地说，所述盖板通过螺钉固定安装于所述叶轮轴套。
进一步地说，所述叶片为铝制叶片或不锈钢叶片。
进一步地说，所述插接部的截面为等腰三角形，所述等腰三角形的顶角的角度为15°-30°。
进一步地说，所述盖板朝向所述叶片的一侧设有凸台，所述凸台位于所述盖板的边缘且沿盖板的整圈设置，所述限位槽设于所述凸台。
进一步地说，所述凸台与所述盖板为一体结构或分体安装结构。
本实用新型的有益效果：
本实用新型的叶轮，其叶片通过插接部可拆卸安装于叶轮轴套，更换时可根据需求单独更换叶片，降低成本，叶轮的盖板具有若干限位槽，叶片的伸出端可根据需求置于不同的限位槽，从而能够改变叶轮叶片的出射角度，从而能够调节离心泵的扬程；
本实用新型的叶片，其插接部的截面为等腰三角形，所述等腰三角形的顶角的角度为15°-30°，三角形的结构使叶片在离心力的作用下与叶轮轴套能够卡合的越来越紧，提高叶轮的组合精密度，提高叶轮的使用寿命。
上述说明仅是本实用新型技术方案的概述，为了能够更清楚了解本实用新型的技术手段，并可依照说明书的内容予以实施，以下以本实用新型的较佳实施例并配合附图详细说明如后。
附图说明
图1是本实用新型的叶轮的整体结构示意图；
图2是本实用新型的叶轮的分解示意图；
图3是图2的A部视图；
图4是图2的B部视图；
图5是本实用新型的叶片安装示意图；
图6是本实用新型的叶片安装示意图(调整出射角安装)；
附图中各部分标记如下：
叶轮轴套1、插槽11、叶片2、插接部21、盖板3、限位槽31和凸台32。
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：一种组合式离心叶轮，如图1到图6所示：包括叶轮轴套1、若干叶片2和至少一个盖板3，所述叶轮轴套套接于泵轴，所述叶片安装于所述叶轮轴套的外周，且所有所述叶片沿所述叶轮轴套的外周均布，所述盖板固定连接于所述叶轮轴套的一端并覆盖所述叶片；
所述叶片的一端设有插接部21，所述插接部的截面为三角形，所述叶轮轴套的侧壁具有供所述插接部***的插槽11，所述盖板朝向所述叶片的一侧具有若干条形的限位槽31，所述叶片的另一端置于所述限位槽内；
如图5和图6所示：通过将所述叶片的另一端***不同的所述限位槽，从而改变所述叶片的出射角的角度。
所述限位槽的数量为所述叶片数量的2倍或3倍。
本实施例中，所述盖板设有2个，2个所述盖板分别固定连接于所述叶轮轴套的两端。
本实施例作为最优方案，在具体实施时，所述叶片设有12个，每个所述盖板上的所述限位槽设有24个。
所述盖板通过螺钉固定安装于所述叶轮轴套。
所述叶片为铝制叶片或不锈钢叶片。
所述插接部的截面为等腰三角形，所述等腰三角形的顶角的角度为15°-30°。
所述盖板朝向所述叶片的一侧设有凸台32，所述凸台位于所述盖板的边缘且沿盖板的整圈设置，所述限位槽设于所述凸台内。
所述凸台与所述盖板为一体结构或分体安装结构。
本实施例中，所述凸台与所述盖板为一体结构。
本实用新型的工作过程和工作原理如下：
叶轮的叶片通过插接部可拆卸安装于叶轮轴套，更换时可根据需求单独更换叶片，降低成本，叶轮的盖板具有若干限位槽，叶片的伸出端可根据需求置于不同的限位槽，从而能够改变叶轮叶片的出射角度，从而能够调节离心泵的扬程；
叶片的插接部的截面为等腰三角形，所述等腰三角形的顶角的角度为15°-30°，三角形的结构使叶片在离心力的作用下与叶轮轴套能够卡合的越来越紧，提高叶轮的组合精密度，提高叶轮的使用寿命。
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. 一种组合式离心叶轮，其特征在于：包括叶轮轴套(1)、若干叶片(2)和至少一个盖板(3)，所述叶轮轴套套接于泵轴，所述叶片安装于所述叶轮轴套的外周，且所有所述叶片沿所述叶轮轴套的外周均布，所述盖板固定连接于所述叶轮轴套的一端并覆盖所述叶片；
    所述叶片的一端设有插接部(21)，所述插接部的截面为三角形，所述叶轮轴套的侧壁具有供所述插接部***的插槽(11)，所述盖板朝向所述叶片的一侧具有若干条形的限位槽(31)，所述叶片的另一端置于所述限位槽内，通过将所述叶片的另一端***不同的所述限位槽，从而改变所述叶片的出射角的角度。
  2. 根据权利要求1所述的组合式离心叶轮，其特征在于：所述限位槽的数量为所述叶片数量的2倍或3倍。
  3. 根据权利要求1所述的组合式离心叶轮，其特征在于：所述盖板设有2个，2个所述盖板分别固定连接于所述叶轮轴套的两端。
  4. 根据权利要求2所述的组合式离心叶轮，其特征在于：所述叶片设有12个，每个所述盖板上的所述限位槽设有24个。
  5. 根据权利要求1或3所述的组合式离心叶轮，其特征在于：所述盖板通过螺钉固定安装于所述叶轮轴套。
  6. 根据权利要求1所述的组合式离心叶轮，其特征在于：所述叶片为铝制叶片或不锈钢叶片。
  7. 根据权利要求1所述的组合式离心叶轮，其特征在于：所述插接部的截面为等腰三角形，所述等腰三角形的顶角的角度为15°-30°。
  8. 根据权利要求1所述的组合式离心叶轮，其特征在于：所述盖板朝向所述叶片的一侧设有凸台，所述凸台位于所述盖板的边缘且沿盖板的整圈设置，所述限位槽设于所述凸台。
  9. 根据权利要求8所述的组合式离心叶轮，其特征在于：所述凸台与所述盖板为一体结构或分体安装结构。
PCT/CN2019/095587 2019-06-06 2019-07-11 组合式离心叶轮 WO2020244024A1 (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
CN117283277A (zh) * 2023-11-24 2023-12-26 常州市洛锐电器有限公司 一种水泵叶轮压装装置及其压装方法

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CN113090577B (zh) * 2021-04-06 2023-02-17 江苏大学 一种可调节叶片出口角的离心泵叶轮
CN115234512A (zh) * 2022-07-19 2022-10-25 嘉兴嘉鼓风机有限公司 一种鼓风机的叶轮结构及其加工工艺
CN117989136B (zh) * 2024-04-07 2024-05-28 成都理工大学 一种圆盘齿型复合离心泵

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