WO2016008407A1 - 一种磁力泵 - Google Patents

一种磁力泵 Download PDF

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Publication number
WO2016008407A1
WO2016008407A1 PCT/CN2015/084035 CN2015084035W WO2016008407A1 WO 2016008407 A1 WO2016008407 A1 WO 2016008407A1 CN 2015084035 W CN2015084035 W CN 2015084035W WO 2016008407 A1 WO2016008407 A1 WO 2016008407A1
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WO
WIPO (PCT)
Prior art keywords
pump body
permanent magnet
pump
chamber
rotor
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Application number
PCT/CN2015/084035
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English (en)
French (fr)
Inventor
陈维加
Original Assignee
苏州泰格动力机器有限公司
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Application filed by 苏州泰格动力机器有限公司 filed Critical 苏州泰格动力机器有限公司
Publication of WO2016008407A1 publication Critical patent/WO2016008407A1/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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer

Definitions

  • the invention relates to a magnetic pump.
  • the structure of the ordinary water pump is to isolate the water pump inside and outside with a sliding water seal.
  • the sliding water seal can play a role in isolation in most cases, the sliding friction plate of the sliding water seal is easy to seep, and the pump is not completely isolated inside or outside. In the state, part of the liquid will seep through the sliding friction plate joint surface.
  • the existing magnetic pump is aimed at the above problems. A specially designed pump that is completely isolated inside and outside the pump.
  • the structure of the existing magnetic pump is such that the pump shaft is driven by a conventional motor 13 by means of an intermediate magnetic drive mechanism 14 A pump that rotates to cause the impeller 3 on the pump shaft 15 of the pump body A to rotate.
  • the magnetic drive mechanism 14 The main components are the outer magnetic rotor (also called the active permanent magnet rotor, which consists of the active rotor 16 and the active rotor magnet 17) and the inner magnetic rotor (also called the driven permanent magnet rotor, which is driven by the driven rotor 18 and the driven rotor).
  • an isolation sleeve 21 is formed between the inner magnetic rotor and the outer magnetic rotor to form a sealed cavity, and the pump shaft 15 and the inner magnetic rotor are enclosed in the sealed cavity to completely isolate the pump body and the outside, and the motor 13 is driven by the motor flange 20 It is fixed to the rear housing of the magnetic drive mechanism 14.
  • the central shaft 6 drives the outer magnetic rotor to rotate, and the outer magnetic rotor cooperates with the inner magnetic rotor to drive the inner magnetic rotor to rotate, and then the inner magnetic rotor drives the pump shaft 15 to rotate, so that the pump body A
  • the impeller 3 on the inner pump shaft 15 rotates.
  • the biggest problem with the existing magnetic pump is that it adds a volume and weight that is almost the same volume and weight as a motor, and has a complicated structure, high cost, and troublesome maintenance and maintenance for the complete isolation of the pump body and the outside, and the motor 13 Need to use magnetic drive mechanism 14 This intermediate is used to transmit power, and it is difficult to ensure that the magnetic drive mechanism will not be damaged or cause problems during long-term operation. Therefore, the reliability and service life of conventional magnetic pumps are difficult to guarantee, which often increases maintenance costs and affects production and normal work.
  • An object of the present invention is to provide a magnetic pump which is much smaller in size than a conventional magnetic pump, has a more compact structure, is less expensive to manufacture, and has an excellent cooling effect on a motor portion.
  • the technical solution of the present invention is: a magnetic pump comprising a pump body, wherein the pump body is separated by a front chamber, a middle chamber and a rear chamber, wherein the front chamber is provided with an impeller, and the rear chamber is provided with an impeller.
  • a permanent magnet rotor ; and the middle chamber is a closed water blocking chamber, and an electromagnetic stator is provided in the permanent magnet rotor, and the permanent magnet rotor and the impeller are connected by a central axis penetrating the middle chamber .
  • the pump body front case, the pump body middle case and the pump body rear case are sequentially fixed, and the pump body middle case is respectively formed between the pump body front case and the pump body rear case.
  • the pump body is integrally formed with an electromagnetic stator seat extending into the rear chamber, the electromagnetic stator is fixed on the stator seat;
  • the isolation cover is further fixed by the locking sleeve It is connected to the stator seat and forms a middle chamber which closes the electromagnetic stator together with the middle casing and the stator seat of the pump body.
  • a shaft hole is disposed, the center shaft is assembled in the shaft hole by a bearing, and the permanent magnet rotor is fixed on the central shaft and located at the periphery of the electromagnetic stator The permanent magnet rotor and the electromagnetic stator are separated by the isolation cover.
  • the electromagnetic stator includes a stator core, the stator core is evenly spaced with a plurality of payout slots, and the payout slot has a stator coil built therein; and the permanent magnet rotor includes The rotor flywheel fixed to the central shaft is engaged by a key groove, and the rotor magnet is evenly spaced and fixed on the rotor flywheel.
  • the pump body In the pump body, the pump body is provided with inlet and outlet ports communicating with the front chamber.
  • the motor is configured to rotate between the permanent magnet rotor and the electromagnetic stator as a power source to drive the central axis to rotate, thereby driving the impeller in the front chamber to rotate, so that the magnetic pump operates.
  • the invention directly uses the driven permanent magnet rotor in the magnetic drive mechanism of the magnetic pump as the rotor of the motor, and replaces the active permanent magnet rotor in the magnetic transmission mechanism with the electromagnetic stator, so it completely subverts the existing magnetic pump.
  • the design idea completely changes the complex internal and external magnetic drive structure of the existing magnetic pump, greatly shortening and reducing the axial length and volume of the conventional magnetic pump, making the overall structure of the magnetic pump more compact, smaller in size and lighter in weight. At the same time, it effectively saves materials and saves production and maintenance costs.
  • the front and rear chambers are all liquid chambers
  • the stator body is designed on the shell of the pump body, thereby ensuring that the stator seat and its electromagnetic stator can be dissipated by water cooling, so that the electromagnetic stator portion is not only very Good heat dissipation, while eliminating the need for conventional fan components and motor cooling enclosures, which is more conducive to material savings and production costs. And it can eliminate the fan noise, and truly achieve the balance of volume, cost, heat dissipation and noise reduction.
  • FIG. 1 is a schematic structural view of a conventional conventional magnetic pump
  • FIG 2 is a schematic structural view of a specific embodiment of the present invention (arc outer rotor configuration of the motor).
  • 1 the front shell of the pump body; 2, the middle shell of the pump body; 3, the impeller; 4, the electromagnetic stator; 4a, the stator core; 4b 5, permanent magnet rotor; 5a, rotor flywheel; 5b, rotor magnet steel; 6, central shaft; 7, pump body shell; 8, stator seat; 9, bearing; 10, isolation sleeve; , locking sleeve; 12, sealing ring; A, pump body;
  • the magnetic pump provided in this embodiment has a pump body A, and the pump body A It consists of a pump body front case 1 , a pump body middle case 2 and a pump body rear case 7 which are sequentially fixed.
  • the pump body middle case 2 forms a front chamber and a rear chamber between the pump body front case 1 and the pump body rear case 7 respectively; the pump body middle case 2
  • the upper unit is designed with a stator base 8 extending into the rear chamber, and the electromagnetic stator 4 is fixed to the stator base 8.
  • the spacer 8 is also fixed on the stator base 8 , and the isolation cover 10 in the embodiment is provided by a locking sleeve 11 is fixed to the end of the stator seat 8, and the front edge of the spacer 10 is clamped between the joint surface of the pump body middle case 2 and the pump body rear case 7, so that the isolation cover 10 and the pump body middle case 2, the stator seat 8 together enclose a closed compartment in the middle of the water.
  • a water inlet (not shown) communicating with the front chamber is opened at the front end of the front casing 1 of the pump body, and the front shell of the pump body 1 The top is open with a water outlet that is connected to the front chamber (not shown).
  • An impeller 3 is disposed in the front chamber, and a permanent magnet rotor is disposed in the rear chamber.
  • the middle chamber is a closed water-tight chamber, which is provided with an electromagnetic stator 4 cooperating with the permanent magnet rotor 5, and the permanent magnet rotor 5 and the impeller 3 pass through a central axis penetrating the middle chamber 6 Connected.
  • the stator base 8 is provided with a shaft hole.
  • the central shaft 6 is assembled in the shaft hole by two bearings 9, and the permanent magnet rotor 5 is fixed on the central shaft 6 and located at the center.
  • Electromagnetic stator 4 In the periphery, the permanent magnet rotor 5 and the electromagnetic stator 4 are separated by the spacer 10.
  • the electromagnetic stator 4 in the present embodiment includes a stator core 4a fixed to the periphery of the stator base 8.
  • the stator core 4a is evenly spaced with a plurality of payout slots, and the payout slot has a stator coil 4b; and the permanent magnet rotor 5 includes a rotor flywheel 5a fixed to the central shaft 6 by a keyway fit.
  • the rotor magnet 5b opposite to the multipole stator 4 is uniformly spaced on the inner wall of the rotor flywheel 5a.
  • a sealing ring 12 is provided between the joint faces and the joint faces of the spacer 10 and the end of the stator seat 8 to further improve the waterproof performance.

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

Abstract

一种磁力泵，包括泵体（A），所述泵体（A）内侧隔有前、中、后三个腔室，所述前腔室内设有叶轮（3），后腔室内设有永磁转子（5）；而所述中腔室为密闭的隔水腔室，其内设有与永磁转子（5）配合的电磁定子（4），所述永磁转子（5）与叶轮（3）之间通过贯穿中腔室的中心轴（6）相连接。上述磁力泵将现有磁力泵的磁力传动机构中的主动永磁转子直接作为电机的转子，将原传动机构中的从动永磁转子用电磁定子所取代，故其彻底颠覆了现有磁力泵的设计思路，完全改变了现有磁力泵复杂的内外磁力传动架构，极大的缩短和缩减了常规磁力泵的轴向长度和体积，使得磁力泵整体结构更加紧凑，体积更小，重量更轻，同时有效的节省了材料、节约了生产和维护成本。

Description

一种磁力泵
技术领域
本发明涉及一种磁力泵。
背景技术
普通水泵的结构是用滑动式水封将水泵体内外进行隔离，虽然滑动式水封在大多情况下可起到隔离作用，但滑动式水封的滑动摩擦片较易渗水，水泵内外不是完全隔离的状态，部分液体会通过滑动摩擦片结合面渗出，在水泵用作抽取有毒或腐蚀性液体时，微量的泄漏会对水泵本身及周围环境造成极大影响，现有磁力泵就是针对上述问题专门设计制造的泵体内外完全隔离的水泵。
现有磁力泵的结构是一种由常规电机 13 借助一个中间的磁力传动机构 14 来带动泵轴 15 转动，进而使泵体 A 内泵轴 15 上的叶轮 3 转动工作的一种泵。结合图 1 所示，所述的磁力传动机构 14 的主要部件是外磁转子（也叫主动永磁转子，由主动转子 16 和主动转子磁钢 17 构成）和内磁转子（也叫从动永磁转子，由从动转子 18 和从动转子磁钢 19 构成），内磁转子与外磁转子间设有隔离套 21 形成密封腔，将泵轴 15 和内磁转子封闭在密封腔内从而将泵体内外完全隔离，电机 13 藉由电机法兰 20 与磁力传动机构 14 后部壳体固定。中心轴 6 带动外磁转子旋转，外磁转子与内磁转子配合通过磁力带动内磁转子转动，再由内磁转子带动泵轴 15 转动，使泵体 A 内泵轴 15 上的叶轮 3 转动工作。
显然，现有的磁力泵存在的最大问题是为了泵体内外完全隔离而增加了一个几乎和一个电机同样体积和重量，结构复杂，成本很高，且维护和保养麻烦的传动机构，且因电机 13 需借助磁力传动机构 14 这一中间体来传递动力，很难保证磁力传动机构在长期运转过程中不会发生损坏或产生问题。故常规磁力泵的工作可靠性和使用寿命都难以得到保证，往往会增加维修成本，影响生产和正常工作。
发明内容
本发明目的是：提供一种相比常规磁力泵体积大为缩减，结构更为紧凑，制造成本更低，同时对于电机部分具有优良冷却效果的磁力泵。
本发明的技术方案是：一种磁力泵，包括泵体，其特征在于所述泵体内侧隔有前、中、后三个腔室，所述前腔室内设有叶轮，后腔室内设有永磁转子；而所述中腔室为密闭的隔水腔室，其内设有与永磁转子配合的电磁定子，所述永磁转子与叶轮之间通过贯穿中腔室的中心轴相连接。
进一步的，本发明中所述泵体包括依次固定的泵体前壳、泵体中壳和泵体后壳，所述泵体中壳分别与泵体前壳和泵体后壳之间构成前腔室和后腔室；所述泵体中壳上一体设计有向后腔室内延伸的电磁定子座，电磁定子固定在定子座上；还包括隔离罩，所述隔离罩藉由锁紧套固定至定子座上，并与泵体中壳、定子座之间一起构成封闭电磁定子的中腔室。
更进一步的，本发明中所述定子座内设有轴孔，所述中心轴藉由轴承装配于所述轴孔内，而永磁转子固定于所述中心轴上并位于所述电磁定子外围，所述永磁转子和电磁定子之间通过所述隔离罩隔开。
进一步的，本发明中同常规技术一样，所述电磁定子包括定子铁芯，所述定子铁芯上均匀间隔分布有若干放线槽，放线槽内置有定子线圈；而所述永磁转子包括藉由键槽配合固定于中心轴上的转子飞轮，所述转子飞轮上均匀间隔固定有转子磁钢。
本发明中所述泵体上设有同前腔室相连通的进、出水口。
本发明在实际工作时，所述永磁转子和电磁定子之间构成电机作为动力源驱动中心轴旋转，进而带动前腔室内的叶轮转动使得磁力泵运作。
本发明的优点是：
1. 本发明将现有磁力泵磁力传动机构中的从动永磁转子直接作为电机的转子，而将磁力传动机构中的主动永磁转子用电磁定子所取代，故其彻底颠覆了现有磁力泵的设计思路，完全改变了现有磁力泵复杂的内外磁力传动架构，极大的缩短和缩减了常规磁力泵的轴向长度和体积，使得磁力泵整体结构更加紧凑，体积更小，重量更轻，同时有效的节省了材料、节约了生产和维护成本。
2. 本发明中前、后腔室均为液体腔室，泵体中壳上又一体设计定子座，从而确保能够通过水冷来对定子座及其电磁定子实施散热，这样做对于电磁定子部分不仅具有很好的散热效果，同时省去了常规的风扇部件和电机散热外壳，更利于节省材料、节约生产成本。并且能够消除风扇噪音，真正做到体积、成本、散热、降噪四者的兼顾。
附图说明
下面结合附图及实施例对本发明作进一步描述：
图 1 为现有常规磁力泵的结构示意图；
图 2 为本发明一种具体实施例的结构示意图（电机内定子外转子构型）。
其中： 1 、泵体前壳； 2 、泵体中壳； 3 、叶轮； 4 、电磁定子； 4a 、定子铁芯； 4b 、定子线圈； 5 、永磁转子； 5a 、转子飞轮； 5b 、转子磁钢； 6 、中心轴； 7 、泵体后壳； 8 、定子座； 9 、轴承； 10 、隔离套； 11 、锁紧套； 12 、密封圈； A 、泵体；
具体实施方式
实施例：结合图 2 所示，本实施例提供的这种磁力泵，其具有泵体 A ，所述泵体 A 由依次固定的泵体前壳 1 、泵体中壳 2 和泵体后壳 7 构成。所述泵体中壳 2 分别与泵体前壳 1 和泵体后壳 7 之间构成前腔室和后腔室；所述泵体中壳 2 上一体设计有向后腔室内延伸的定子座 8 ，电磁定子 4 固定在定子座 8 上。所述定子座 8 上还固定隔离罩 10 ，本实施例中所述隔离罩 10 藉由锁紧套 11 固定至定子座 8 的末端，而隔离罩 10 的前端周缘则被夹紧在泵体中壳 2 和泵体后壳 7 的结合面间，从而使得隔离罩 10 与泵体中壳 2 、定子座 8 之间一起围成封闭隔水的中腔室。本实施例中在泵体前壳 1 前端开有与前腔室连通的进水口（图中未标出），而泵体前壳 1 顶部开有与前腔室连通的出水口（图中未标出）。
所述前腔室内设置叶轮 3 ，后腔室内设置永磁转子 5 ；而所述中腔室为密闭的隔水腔室，其内设有与永磁转子 5 配合的电磁定子 4 ，所述永磁转子 5 与叶轮 3 之间通过贯穿中腔室的中心轴 6 相连接。本实施例中所述定子座 8 内设有轴孔，所述中心轴 6 藉由两个轴承 9 装配于所述轴孔内，而永磁转子 5 固定于所述中心轴 6 上并位于所述电磁定子 4 外围，所述永磁转子 5 和电磁定子 4 之间通过所述隔离罩 10 隔开。
具体如图 2 所示，本实施例中所述电磁定子 4 包括固定至定子座 8 外围的定子铁芯 4a ，所述定子铁芯 4a 上均匀间隔分布有若干放线槽，放线槽内置有定子线圈 4b ；而所述永磁转子 5 包括藉由键槽配合固定于中心轴 6 上的转子飞轮 5a ，所述转子飞轮 5a 的内壁上均匀间隔固定有与多极定子 4 相对的转子磁钢 5b 。
本实施例中在泵体前壳 1 和泵体中壳 2 的结合面间，隔离罩 10 和泵体后壳 7 的结合面间，以及隔离罩 10 和定子座 8 末端的结合面间均设有密封圈 12 ，以进一步提高防水性能。
当然上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明主要技术方案的精神实质所做的修饰，都应涵盖在本发明的保护范围之内。

Claims (5)

  1. 一种磁力泵，包括泵体（ A ），其特征在于所述泵体（ A ）内侧隔有前、中、后三个腔室，所述前腔室内设有叶轮（ 3 ），后腔室内设有永磁转子（ 5 ）；而所述中腔室为密闭的隔水腔室，其内设有与永磁转子（ 5 ）配合的电磁定子（ 4 ），所述永磁转子（ 5 ）与叶轮（ 3 ）之间通过贯穿中腔室的中心轴（ 6 ）相连接。
  2. 根据权利要求 1 所述的一种磁力泵，其特征在于所述泵体（ A ）包括依次固定的泵体前壳（ 1 ）、泵体中壳（ 2 ）和泵体后壳（ 7 ），所述泵体中壳（ 2 ）分别与泵体前壳（ 1 ）和泵体后壳（ 7 ）之间构成前腔室和后腔室；所述泵体中壳（ 2 ）上一体设计有向后腔室内延伸的电磁定子座（ 8 ），电磁定子（ 4 ）固定在电磁定子座（ 8 ）上；还包括隔离罩（ 10 ），所述隔离罩（ 10 ）藉由锁紧套（ 11 ）固定至电磁定子座（ 8 ）上，并与泵体中壳（ 2 ）、电磁定子座（ 8 ）之间一起构成封闭电磁定子（ 4 ）的中腔室。
  3. 根据权利要求 2 所述的一种磁力泵，其特征在于所述电磁定子座（ 8 ）内设有轴孔，所述中心轴（ 6 ）藉由轴承（ 9 ）装配于所述轴孔内，而永磁转子（ 5 ）固定于所述中心轴（ 6 ）上并位于所述电磁定子（ 4 ）外围，所述永磁转子（ 5 ）和电磁定子（ 4 ）之间通过所述隔离罩（ 10 ）隔开。
  4. 根据权利要求 1 或 2 或 3 所述的磁力泵，其特征在于所述永磁定子（ 4 ）包括定子铁芯（ 4a ），所述电磁定子铁芯（ 4a ）上均匀间隔分布有若干放线槽，放线槽内置有定子线圈（ 4b ）；而所述永磁转子（ 5 ）包括藉由键槽配合固定于中心轴（ 6 ）上的转子飞轮（ 5a ），所述转子飞轮（ 5a ）上均匀间隔固定有转子磁钢（ 5b ）。
  5. 根据权利要求1所述的磁力泵，其特征在于所述泵体（A）上设有同前腔室相连通的进、出水口。
PCT/CN2015/084035 2014-07-16 2015-07-15 一种磁力泵 WO2016008407A1 (zh)

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